CN107453966B - Remote data transmission adapting device for intelligent power distribution service and control method - Google Patents
Remote data transmission adapting device for intelligent power distribution service and control method Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/2854—Wide area networks, e.g. public data networks
- H04L12/2856—Access arrangements, e.g. Internet access
- H04L12/2869—Operational details of access network equipments
- H04L12/2878—Access multiplexer, e.g. DSLAM
- H04L12/2887—Access multiplexer, e.g. DSLAM characterised by the offered subscriber services
- H04L12/2889—Multiservice, e.g. MSAN
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- H02J13/0075—
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/10—Flow control; Congestion control
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02B90/20—Smart grids as enabling technology in buildings sector
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S40/124—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wired telecommunication networks or data transmission busses
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S40/126—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wireless data transmission
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Abstract
The invention relates to a remote data transmission adapting device and a control method for intelligent power distribution service, which solve the technical problem that multi-interface and multi-service adaptation cannot be realized between the current intelligent power distribution service terminal and a data transmission device; the remote wireless communication module is connected with the CPU, and the CPU is connected with the power supply module; the serial-parallel interface module works independently or partially and comprises a real-time interface module and a service interface module; CPU time-sharing polling real-time interface module, controlling service interface module according to service priority; the CPU comprises a flow classifier, the flow classifier distinguishes the data types of the electric power service input by the serial-parallel interface, and the technical scheme of configuring the logic interface better solves the problem and is used for the remote data transmission of the intelligent power distribution service.
Description
Technical Field
The invention relates to the field of intelligent power distribution, in particular to a remote data transmission adapting device and a control method for intelligent power distribution business.
Background
Various service terminals exist in an electric power system, and with the development of an intelligent power distribution system, more and more electric power service terminals are not limited to local operation and need to transmit acquired data to corresponding service master stations through a communication network system. Meanwhile, with the gradual development of the electric power communication network, the electric power communication network is in a heterogeneous state, and various communication modes exist in the communication system, such as a wireless network or a wired network of a renting operator, a physical channel of the renting operator, a special wireless network and a special wired network.
The prior technical scheme has the technical problem that multi-interface and multi-service adaptation at a user side cannot be realized. Therefore, the method provides various adaptive interfaces for both the power service terminal and the communication network, so that the service terminal can be conveniently accessed into the communication system, and the various communication network interfaces are utilized for service data transmission, thereby improving the real-time performance and reliability of service transmission and reducing the construction and operation and maintenance costs of the communication system.
Disclosure of Invention
The technical problem to be solved by the invention is the technical problem that the service terminal is complex to access a communication system in the prior art. The remote data transmission adapting device for the intelligent power distribution service has the characteristics of realization of multi-interface and multi-service adaptation at a user side, simple access of a service terminal, high stability, high real-time property, intelligent power supply and low packet loss rate.
In order to solve the technical problems, the technical scheme is as follows:
a remote data transmission adapting device for intelligent power distribution service is positioned between a user side and a network side, and comprises a CPU, an internal storage unit, a serial-parallel connection module connected with the user side, a communication module connected with the network side and a power module for supplying power to the remote data transmission adapting device; the remote data transmission adapting device also comprises an internal bus, wherein the internal bus is used for connecting the serial-parallel connection module and the CPU, the remote wireless communication module and the CPU, and the CPU and the power supply module; the serial-parallel connection module works independently or partially, the serial-parallel connection module comprises a real-time interface module and a service interface module, and one real-time interface module corresponds to at least one service interface module; the CPU is used for polling the real-time interface module in a time-sharing manner and controlling the corresponding service interface module according to the preset service priority, and comprises a flow classifier, wherein the flow classifier is used for distinguishing the type of the electric power service data input by the serial-parallel interface and configuring a logic interface matched with the type of the electric power service data; the communication module is at least one of a wired communication module and a wireless communication module.
In the foregoing solution, for optimization, further, the serial-parallel connection module includes an ethernet module, and when the ethernet module is in a WAN/LAN working mode, the wired communication module is multiplexed with the ethernet module.
Furthermore, the remote data transmission adapting device further comprises a bypass circuit connected between the user side and the network side and a watchdog circuit electrically connected with the bypass circuit, and the watchdog circuit is connected with the CPU through an internal bus.
The invention also provides a control method for the intelligent power distribution service, wherein the control method is used for the remote data transmission adapting device, and the control method comprises the following steps:
(1) initializing a remote data transmission adapting device;
(2) the CPU controls the serial-parallel interface to work, the power service terminal at the user side sends data through the serial-parallel interface module, and counts flow in real time, wherein the data comprises data identification;
(3) the CPU classifies data flow through identifying data identification, one type of data flow is a power service borne on a data link layer, and the corresponding logic interface configuration is defined as an exchange mode; the second kind of data flow is the electric power business carried in IP network, the correspondent logical interface is configured as the route mode, the third kind of data flow is the electric power business carried in application layer, the correspondent logical interface is configured as the exchange mode or route mode;
(4) and (4) the CPU starts a corresponding cache unit according to the mode configured by the logic interface in the step (3), and the cache unit controls the network side communication module to transmit data.
The working principle of the invention is as follows: the invention provides a serial-parallel interface module (such as 232/485/Eth) adapted to an electric power service terminal, the interface module can independently work in parallel or partially work, a CPU can poll the real-time interface module in a time-sharing way, the priority of the service is distinguished for different types of service interface modules, and a back pressure control signal is provided for the flow input by a user side interface; the CPU is configured to be in a switching mode aiming at the logic interface of the power service (such as IEC60870-5-101) carried at a data link layer, configured to be in a routing mode aiming at the logic interface of the power service (such as IEC60870-5-104) carried at an IP network, and selectively configured to be in the routing mode or the switching mode aiming at the logic interface configuration of the power service (such as IEC61850) carried at an application layer. By the scheme, multi-interface and multi-service adaptation of the user side can be realized. The power terminal is an existing non-intelligent terminal and can be adapted.
In the above scheme, for optimization, the control method further includes that the CPU provides a back-pressure signal to the serial-parallel interface module according to the flow, and the serial-parallel interface module controls the gate according to the back-pressure signal to control the input data flow.
Further, the initialization of the remote data transmission adapting device comprises online configuration and online self-inspection;
the online configuration comprises a remote end configuration, a local port configuration and a wire jumping ring configuration; the jumper ring configuration is a first priority, the local configuration and the remote configuration are configured by the jumper ring, the jumper ring configuration is short, and the remote configuration priority is higher than the local configuration;
the online self-checking comprises the steps of generating self-checking information according to the health states of ports on an online self-checking network side and a user side, and providing the self-checking information for online configuration.
Further, when the online self-checking information is a fault, the CPU overrides the remote configuration or local configuration instruction to forcibly provide a configuration script in the fault state, and when the CPU fails, the watchdog circuit triggers the bypass circuit to complete direct connection between the remote port on the network side and the digital logic circuit of the service port on the user side.
Further, when the network side comprises 2 remote communication modules, the step (4) further comprises the step of controlling and configuring a corresponding network side mode by the CPU to transmit data; the network side mode comprises a cold backup mode, a hot backup mode, a port binding mode and an independent working mode; and when the network side mode is cold backup and hot backup, the backup port is dynamically controlled by the CPU.
Furthermore, the control method also comprises the steps of collecting the running states of the power service terminal and the communication module, and controlling the power supply module to carry out self-adaptive power supply by the CPU according to the running states of the power service terminal and the communication module, wherein the running states comprise an in-place state and a working state.
In the invention, the communication device is provided with an independent external primary power supply or takes power from a secondary power supply interface of user side service terminal equipment to provide an emergency power supply capacitor module; interface state configuration or self-adaptive sensing determines the in-place and working state of the communication modules at the user side and the network side, and provides power supply or does not provide a secondary power supply for each external interface independently.
The working mode of the equipment adopts the jump ring configuration of a far end, a local interface and a PCB (printed Circuit Board), the far end configuration is through a far end communication module interface at a shared network side, the local configuration is through a shared user side communication interface module or an independent local configuration interface (such as a JTAG port), the configuration priority is determined by the jump ring of the PCB, the priority sequence between the far end configuration and the local configuration is determined by the jump ring of the PCB, and the default is that the far end configuration is higher than the local configuration; the CPU provides the online self-checking function of the health state of the network side and the user side port, and provides self-checking information to the remote configuration function module and the local configuration function module, and when the remote configuration instruction and the local configuration instruction do not accord with the self-checking information, the CPU provides a configuration script in a fault state by exceeding the remote configuration instruction or the local configuration instruction; the CPU monitors the data transmission bandwidth and physical channel parameters of the network side port in real time and provides the data transmission bandwidth and the physical channel parameters to the remote channel switching control module and the local channel switching control module, the remote channel switching control module and the local channel switching control module have the same priority, the first arrival instruction is prior in the locked time period, and under the condition of CPU failure, the digital logic circuit direct connection function for setting the network side remote port and the user side service port is provided, and the function is triggered by the watchdog circuit.
The invention has the beneficial effects that:
the method has the advantages that the method realizes multi-interface and multi-service adaptation of a user side, and data transmission gives consideration to instantaneity and priority sequences required by power services;
the effect II is that the stability of data transmission is improved through the double-port arrangement of the network side;
the third effect is that the isolation of data transmission can be improved by adopting the port binding mode;
the CPU provides a back pressure control signal to control the serial-parallel interface module, so as to control the flow and reduce the packet loss rate;
and fifthly, the multifunctional adaptive communication is completed through initialization of various configurations and self-checking.
Drawings
The invention is further illustrated with reference to the following figures and examples.
Fig. 1 is a schematic diagram of a remote data transmission adapting device for intelligent power distribution service.
Fig. 2 is a schematic diagram of the power service terminal connected with the serial interface for remote data transmission through the remote wireless module.
Fig. 3 is a schematic diagram of the power service terminal connected with the serial interface for remote data transmission through an ethernet WAN interface.
Fig. 4 is a schematic diagram of the power service terminal connected with the ethernet LAN interface for remote data transmission via the remote wireless module.
Fig. 5 is a schematic diagram of the power service terminal connected with the ethernet LAN interface for remote data transmission through the ethernet WAN interface.
Fig. 6 is a schematic diagram of the connection between the real-time interface and the service interface.
Fig. 7, a schematic view of a watchdog circuit.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example 1
The embodiment provides a remote data transmission adapting device for an intelligent power distribution service, which can be used in various service scenarios of an electric power system, such as: the system comprises a power utilization information acquisition system, a negative control system, a metering system, a power distribution automatic system, a feeder automatic system and the like. The method can also be applied to various remote communication systems, such as wireless data communication systems provided by operators, such as 2G, 3G, 4G and the like, and wired communication systems provided by ADSL, Ethernet, EPON and the like, wireless private networks built by power companies and wired private networks built by power companies. The wired WAN port may be compatible with existing carrier wired communication systems.
The remote data transmission adapting device of the embodiment is positioned between a user side and a network side, and comprises a CPU, an internal storage unit, a serial-parallel connection module connected with the user side, a communication module connected with the network side, and a power supply module used for supplying power to the remote data transmission adapting device; the remote data transmission adapting device also comprises an internal bus, wherein the internal bus is used for connecting the serial-parallel connection module and the CPU, the remote wireless communication module and the CPU, and the CPU and the power supply module;
the serial-parallel connection module works independently or partially, the serial-parallel connection module comprises a real-time interface module and a service interface module, and one real-time interface module corresponds to at least one service interface module; the CPU is used for polling the real-time interface module in a time-sharing manner and controlling the corresponding service interface module according to the preset service priority; the CPU comprises a flow classifier, wherein the flow classifier is used for distinguishing the type of the power service data input by the serial-parallel interface and configuring a logic interface matched with the type of the power service data; the communication module is a wired communication module, and the wired communication module is multiplexed with WAN/LAN in an Ethernet module in the serial-parallel interface module, as shown in FIG. 1.
Specifically, the remote data transmission adapting device provides a logical interface adapted to a service protocol of the power service terminal, and the CPU is configured to, for a power service carried at a data link layer, for example: the logical interface of IEC60870-5-101 is configured in switched mode, for power traffic carried over IP networks, for example: the logical interface of IEC60870-5-104 is configured in routing mode for power traffic carried at the application layer, for example: the logical interface configuration of IEC61850 is selectively configured as either routing mode or switching mode.
Specifically, the serial-parallel interface module comprises 2 ethernet modules and a serial interface module, the working modules are respectively WAN/LAN and LAN, and the ethernet module with the WAN/LAN working mode is used for multiplexing the interface with the wired communication module. The Ethernet LAN is connected with the Ethernet tandem module and then can be connected with a plurality of power service terminals to realize multi-interface connection. The serial interface module is 2, including RS232 and RS485 serial interface module, and RS485 serial interface module passes through the RS485 bus and can connect a plurality of power service terminals, and an RS485 bus can connect no more than 32 power service terminals.
The CPU classifies the serial-parallel interface modules into a real-time interface module and a service interface module, as shown in fig. 6, where one real-time interface module corresponds to multiple service interface modules, and the real-time interface module is used as a front end, and is time-division polled by the CPU, and then service priorities are distinguished in the service interface modules of the current real-time interface module, thereby completing multi-interface and multi-service adaptation at the user side.
Preferably, the remote data transmission adapting device further comprises a bypass circuit connected between the user side and the network side and a watchdog circuit electrically connected with the bypass circuit, and the watchdog circuit is connected with the CPU through an internal bus. The setting of bypass circuit and watchdog circuit for providing can switch to bypass circuit through switch automatic switch-over when CPU trouble, direct connection user side and network side improve remote data transmission adapter's stability.
The present embodiment further provides a control method for an intelligent power distribution service, where the control method is used for the foregoing remote data transmission adapting device, and includes:
(1) initializing a remote data transmission adapting device;
(2) the CPU controls the serial-parallel interface to work, the power service terminal at the user side sends data through the serial-parallel interface module, and counts flow in real time, wherein the data comprises data identification;
(3) the CPU classifies data flow through identifying data identification, one type of data flow is a power service borne on a data link layer, and the corresponding logic interface configuration is defined as an exchange mode; the second kind of data flow is the electric power business carried in IP network, the correspondent logical interface is configured as the route mode, the third kind of data flow is the electric power business carried in application layer, the correspondent logical interface is configured as the exchange mode or route mode;
(4) and (4) the CPU starts a corresponding cache unit according to the mode configured by the logic interface in the step (3), and the cache unit controls the network side communication module to transmit data.
The initialization of the step (1) comprises online configuration, online self-checking and minimum autonomous configuration. The working mode of the equipment adopts the configuration of the far end, the local interface and the jumper ring of the PCB, the far end configuration is through the interface of the far end communication module at the shared network side, the local configuration is through the interface module of the communication interface at the shared user side or the independent local configuration interface, such as JTAG port, the configuration priority is determined by the jumper ring of the PCB, the priority order between the far end configuration and the local configuration is determined by the jumper ring of the PCB, and the default is that the far end configuration is higher than the local configuration.
Specifically, the CPU provides an online self-check function of the health status of the network-side and user-side ports, and provides self-check information to the remote and local configuration function modules, and when the remote and local configuration instructions do not meet the self-check information, the CPU overrides the remote configuration or local configuration instruction to forcibly provide a configuration script in a fault state. CPU monitors the data transmission bandwidth and physical channel parameter of network side port in real time, and provides them to remote and local channel switching control module, which have the same priority, and the first-come instruction is prior in the locking time period. When the CPU is in fault, the watchdog circuit triggers the bypass circuit to complete the direct connection of the remote port of the network side and the digital logic circuit of the service port of the user side. The watchdog circuit is as in figure 7.
74LS123 is a retriggerable monostable trigger, which is divided into a rising edge trigger (B) and a falling edge trigger (A), and the permission time T of retriggering can be changed by changing an external resistor R and a capacitor CwWherein T isw0.28CR (1+ 0.7/R). The working timing and pin function of 74LS123, when the clearing end (CLR) and the B end are both high level, if the A end inputs negative jump, the Q end of 74LS123 changes to low level; when the clear terminal is high and the a terminal is low, the Q terminal of 74LS123 goes low if the B terminal input is positive. After a delay, the Q terminal returns to the steady state again, and the process terminal outputs a negative pulse. When the A terminal is high, the Q terminal outputs high no matter what the states of the clear terminal and the B terminal are. The internal bus inputs a CPU fault signal, AN1 is a manual reset button, and P1.6 is a power-on and manual reset indication. When the circuit is powered on or the manual reset button is pressed, U3B:5 and U1B:10 go low, AT which time U3B:6 outputs a high to provide a reset signal to AT89S 52. After the manual reset button is released, the U3B:5 and U1B:10 are gradually raised to high level by charging C4 through R4, the output of U3B:6 is low level, and the CPU stops resetting. Only at power-up and manual reset, U1B:10 generates a positive transition, triggering 74LS123 to output a low signal at time T2 at U1B: 12.
Example 2
In this embodiment, the CPU provides a counter-throttling signal to the serial-parallel interface module according to the flow rate, and the serial-parallel interface module controls the gate according to the counter-throttling signal to control the input data flow rate.
By controlling the flow input of the serial-parallel connection module, when the flow reaches a preset value, the CPU controls to close the serial-parallel connection module to complete the control of the input data flow, the possibility of data packet loss in a remote data transmission adapting device is reduced, and the integrity of data transmission can be improved.
Example 3
In this embodiment, on the basis of embodiment 1, the network side adopts a dual-port configuration, which includes 1 wired communication module, 1 remote communication module, 2 wired communication modules, and 2 wireless communication modules. The wired communication module is multiplexed with an ethernet WAN in the serial interface module, and the remote communication module may be configured as a VPN ethernet or an IP network. The 2 remote wireless communication modules are connected with the CPU through a MiniPCI-E interface or a USB interface or a UART interface of an internal bus. The state indication control of the remote wireless module is connected with the CPU through the GPIO, and the CPU controls the on-off reset of the remote communication module and the on-off of the power supply to be conducted with the GPIO interface.
The dual ports of the remote communication module can work in a cold backup mode, a hot backup mode, a port binding mode and an independent working mode, and the CPU controls the configuration of various modes and the dynamic switching of the backup port. By adopting the port binding mode, the isolation of service transmission can be improved. Through cold and hot backup, the stability of data transmission can be improved. In this embodiment, the configuration of the communication modules is greater than 2, and the aforementioned centralized operation mode can also be implemented, for example, one wired communication module and 2 wireless communication modules, as shown in fig. 1.
Preferably, in this embodiment, an external buffer may be disposed on the internal bus, and the external buffer and the internal buffer are used together, so as to implement buffer sharing and queue FIFO management. In detail, an internal cache and an external cache are configured, the internal cache is matched with an internal bus cache data interface to buffer real-time data, and the external cache stores system configuration information and historical data; the main and standby network-side interfaces adopt the same buffer interval and different buffer pointer queues in cold backup and hot backup modes, the buffer interval is not less than the length of the maximum buffer pointer queue, and the length of the maximum buffer pointer queue is not less than the product of double-port switching time and service sending rate.
As shown in fig. 2, RS232 or RS485 is connected to the power service terminal, and the two wireless communication modules are used as data uplink channels.
As shown in fig. 3, RS232 or RS485 is connected to the power service terminal, and an ethernet interface operates in a WAN mode as a data uplink channel.
As shown in fig. 4, the ethernet interface operating in the LAN is connected to the power service terminal, and the two wireless communication modules are used as data uplink channels.
As shown in fig. 5, the ethernet interface operating in the LAN is connected to the power service terminal, and one ethernet interface operates in the WAN mode as a data upstream channel.
In fig. 2 and 4, when two wireless communication modules are used as data uplink channels, each wireless communication module may work in a wireless data network provided by an operator, or may work in a 230M LTE or 1800MLTE wireless dedicated communication network built by a power company, and each wireless communication module is configured with one or 2 id cards, at this time, the wireless communication module and the CPU may automatically select a communication system and a communication network to switch, so as to improve reliability and stability.
Example 4
The present embodiment provides a plurality of power supply modes on the basis of embodiment 1 or 2 or 3. The method comprises the steps of collecting the running states of the power service terminal and the communication module, and controlling the power supply module to carry out self-adaptive power supply by the CPU according to the running states of the power service terminal and the communication module, wherein the running states comprise an on-site state and a working state.
Specifically, the communication device is provided with an independent external primary power supply or takes power from a secondary power supply interface of user side service terminal equipment to provide an emergency power supply capacitor module; interface state configuration or self-adaptive sensing determines the in-place and working state of the communication modules at the user side and the network side, and provides power supply or does not provide a secondary power supply for each external interface independently.
Example 5
In this embodiment, on the basis of embodiment 1, the security module may be provided to increase the security reliability of the entire data communication. Specifically, the security module is disposed between the power service terminal of the user side and the serial-parallel module. The remote data transmission adapting device can be used as a transfer device after the encryption of the transmission security module in the data transmission structure. Preferably, the data port is input in the serial-parallel module, the address of the data is replaced by the remote data transmission adapting device, and then the data is transmitted, so that the safety and reliability are improved. And the power terminal service can be kept secret.
Although the illustrative embodiments of the present invention have been described above to enable those skilled in the art to understand the present invention, the present invention is not limited to the scope of the embodiments, and it is apparent to those skilled in the art that all the inventive concepts using the present invention are protected as long as they can be changed within the spirit and scope of the present invention as defined and defined by the appended claims.
Claims (9)
1. A remote data transmission adapter device for intelligent power distribution service is located between a user side and a network side, and is characterized in that: the remote data transmission adapting device comprises a CPU, an internal storage unit, a serial-parallel connection module connected with a user side, a communication module connected with a network side, and a power supply module for supplying power to the remote data transmission adapting device;
the remote data transmission adapting device also comprises an internal bus, wherein the internal bus is used for connecting the serial-parallel connection module and the CPU, the remote wireless communication module and the CPU, and the CPU and the power supply module;
the serial-parallel connection module works independently or partially, the serial-parallel connection module comprises a real-time interface module and a service interface module, and one real-time interface module corresponds to at least one service interface module;
the CPU is used for polling the real-time interface module in a time-sharing manner and controlling the corresponding service interface module according to the preset service priority; the CPU comprises a flow classifier, wherein the flow classifier is used for distinguishing the type of the power service data input by the serial-parallel interface and configuring a logic interface matched with the type of the power service data; the communication module is at least one of a wired communication module and a wireless communication module.
2. The remote data transmission adapting device for intelligent power distribution service according to claim 1, wherein: the serial-parallel connection module comprises an Ethernet module, and when the working mode of the Ethernet module is WAN/LAN, the wired communication module and the Ethernet module are multiplexed.
3. The remote data transmission adapting device for intelligent power distribution service according to claim 1, wherein: the remote data transmission adapter device further comprises a bypass circuit connected between the user side and the network side and a watchdog circuit electrically connected with the bypass circuit, and the watchdog circuit is connected with the CPU through an internal bus.
4. A control method for intelligent power distribution service is characterized in that: the control method is used for the remote data transmission adaptation device of any one of claims 1 to 3, and comprises the following steps:
(1) initializing a remote data transmission adapting device;
(2) the CPU controls the serial-parallel interface to work, the power service terminal at the user side sends data through the serial-parallel interface module, and counts flow in real time, wherein the data comprises data identification;
(3) the CPU classifies data flow through identifying data identification, one type of data flow is a power service borne on a data link layer, and the corresponding logic interface configuration is defined as an exchange mode; the second kind of data flow is the electric power business carried in IP network, the correspondent logical interface is configured as the route mode, the third kind of data flow is the electric power business carried in application layer, the correspondent logical interface is configured as the exchange mode or route mode;
(4) and (4) the CPU starts a corresponding cache unit according to the mode configured by the logic interface in the step (3), and the cache unit controls the network side communication module to transmit data.
5. The control method for the intelligent power distribution service according to claim 4, wherein: the control method also comprises the step that the CPU provides a back-pressing signal to the serial-parallel interface module according to the flow, and the serial-parallel interface module controls the gate according to the back-pressing signal so as to control the input data flow.
6. A control method for intelligent power distribution services according to claim 4 or 5, characterized in that: the initialization of the remote data transmission adapting device comprises online configuration and online self-checking;
the online configuration comprises a remote end configuration, a local port configuration and a wire jumping ring configuration; the jumper ring configuration is a first priority, the local configuration and the remote configuration are configured by the jumper ring, the jumper ring configuration is short, and the remote configuration priority is higher than the local configuration;
the online self-checking comprises the steps of generating self-checking information according to the health states of ports on an online self-checking network side and a user side, and providing the self-checking information for online configuration.
7. The control method for intelligent power distribution service according to claim 6, characterized in that: when the self-checking information is a fault, the CPU overrides a remote configuration or local configuration instruction to forcibly provide a configuration script in a fault state, and when the CPU is in fault, the watchdog circuit triggers the bypass circuit to complete the logical direct connection between the network side and the user side.
8. The control method for intelligent power distribution service according to claim 7, wherein: when the network side comprises 2 remote communication modules, the step (4) further comprises the step of controlling and configuring a corresponding network side mode by the CPU to send data; the network side mode comprises a cold backup mode, a hot backup mode, a port binding mode and an independent working mode; and when the network side mode is cold backup and hot backup, the backup port is dynamically controlled by the CPU.
9. The control method for the intelligent power distribution service according to claim 4, wherein: the control method further comprises the steps of collecting the running states of the power service terminal and the communication module, and controlling the power supply module to carry out self-adaptive power supply by the CPU according to the running states of the power service terminal and the communication module, wherein the running states comprise an in-place state and a working state.
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| CN102572959A (en) * | 2012-01-11 | 2012-07-11 | 云南电网公司通信分公司 | Distribution network access layer communication system construction method based on long term evolution (LTE) technique |
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