CN113902071B - A transformer power supply line safety inspection device and control method thereof - Google Patents
A transformer power supply line safety inspection device and control method thereof Download PDFInfo
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- CN113902071B CN113902071B CN202111154863.0A CN202111154863A CN113902071B CN 113902071 B CN113902071 B CN 113902071B CN 202111154863 A CN202111154863 A CN 202111154863A CN 113902071 B CN113902071 B CN 113902071B
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- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K17/00—Methods or arrangements for effecting co-operative working between equipments covered by two or more of main groups G06K1/00 - G06K15/00, e.g. automatic card files incorporating conveying and reading operations
- G06K17/0022—Methods or arrangements for effecting co-operative working between equipments covered by two or more of main groups G06K1/00 - G06K15/00, e.g. automatic card files incorporating conveying and reading operations arrangements or provisions for transferring data to distant stations, e.g. from a sensing device
- G06K17/0029—Methods or arrangements for effecting co-operative working between equipments covered by two or more of main groups G06K1/00 - G06K15/00, e.g. automatic card files incorporating conveying and reading operations arrangements or provisions for transferring data to distant stations, e.g. from a sensing device the arrangement being specially adapted for wireless interrogation of grouped or bundled articles tagged with wireless record carriers
-
- G—PHYSICS
- G07—CHECKING-DEVICES
- G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
- G07C9/00—Individual registration on entry or exit
- G07C9/00174—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/20—Interlocking, locking, or latching mechanisms
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B3/00—Apparatus specially adapted for the manufacture, assembly, or maintenance of boards or switchgear
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G1/00—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Computer Networks & Wireless Communication (AREA)
- General Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Power Engineering (AREA)
- Management, Administration, Business Operations System, And Electronic Commerce (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
常规的电气开关（断路器）只能对本体的地刀进行机械闭锁，在地刀处于合闸状态时候，开关不能送入工作位置合闸，但对于独立于开关之外的地线等其它安全措施，无法实现闭锁。基于物联网信息技术，本发明提出的一种变压供电线路安全检修装置及其控制方法，在地线管理柜中增设带电子标签识别装置，并且在低压侧地线及低压母线地线中分别植入电子芯片，所述电子芯片能够被所述电子标签识别装置识别。并且，通过设置中央管理系统使其分别与所述地线管理柜及电气开关之间构成信息联通，由中央管理系统控制地线管理柜的开锁及闭锁。在检修过程中，当地线未归位时，使电气开关实现闭锁，防止合闸，从而有效提高设备运行安全及人生安全。
Conventional electrical switches (circuit breakers) can only mechanically lock the ground knife of the main body. When the ground knife is in the closed state, the switch cannot be sent to the working position to close, but other safety measures such as the ground wire that are independent of the switch cannot be locked. Based on the information technology of the Internet of Things, the present invention proposes a transformer power supply line safety maintenance device and a control method thereof, which adds an electronic tag identification device in the ground wire management cabinet, and implants electronic chips in the low-voltage side ground wire and the low-voltage bus ground wire respectively, and the electronic chip can be identified by the electronic tag identification device. In addition, by setting up a central management system, it is respectively connected with the ground wire management cabinet and the electrical switch to form information communication, and the central management system controls the unlocking and locking of the ground wire management cabinet. During the maintenance process, when the ground wire is not returned to its position, the electrical switch is locked to prevent closing, thereby effectively improving the safety of equipment operation and life safety.
Description
Technical Field
The invention relates to a safety protection technology of a voltage-transformation power supply line, in particular to a safety maintenance device of the voltage-transformation power supply line and a control method thereof.
Background
The five-prevention device of the traditional electrical switching equipment is mainly realized by virtue of a five-prevention locking mechanism of an electrical switch, but safety measures outside a switch body, such as a manual grounding device or a ground wire, cannot be effectively locked, and can only be managed and controlled by virtue of an operation ticket and other manual modes, so that the switch is closed with the ground wire due to the fact that the safety measures such as the ground wire are not removed after the maintenance of the power industry frequently occurs, and serious consequences are caused.
Disclosure of Invention
The invention aims to overcome the defects of the prior five-prevention measure technology of an electric switch, in particular to the safety problem outside a switch body, and provides a more reliable online management method, wherein a manual grounding device, a ground wire and the like are associated with the electric switch, so that the effectiveness and the reliability of the five-prevention locking of the electric switch are effectively improved.
With the continuous progress of the internet of things and the continuous development of informatization and intellectualization of an electrical switch, various well-known circuit breaker manufacturers have successively pushed out circuit breakers with informatization interfaces, such as a schneider MTZ series, an ABB IVD4 series and the like, but still can only realize five-prevention locking of a ground knife of a circuit breaker body and cannot realize locking of external safety measures. Aiming at the defect, the invention integrates the traditional external safety facilities such as the ground wire and the like into a part of the circuit breaker by utilizing the informationized interface of the circuit breaker to carry out coding unified management, thereby effectively locking the ground wire under the condition that the ground wire is not dismantled and reset, preventing the circuit breaker from closing, avoiding electric accidents and further ensuring personal safety.
The technical scheme adopted by the invention for solving the technical problems is that the safety maintenance device of the voltage-transformation power supply line comprises a voltage-transformation power supply line, high-voltage power is connected to a transformer from a high-voltage side through a high-voltage line, low-voltage power is output from a low-voltage side through a low-voltage bus after the voltage is reduced, a high-voltage side electrical switch is arranged on the high-voltage side, and a low-voltage side electrical switch is arranged on the low-voltage side, and the safety maintenance device is characterized by further comprising:
A ground wire management cabinet with an electronic tag identification device, the ground wire management cabinet having a locking mechanism that causes the ground wire management cabinet to have an unlocking mode and a locking mode;
The electronic tag identification device comprises a low-voltage side ground wire and a low-voltage bus ground wire of the electronic tag, wherein electronic chips are respectively implanted in the low-voltage side ground wire and the low-voltage bus ground wire, and the electronic chips can be identified by the electronic tag identification device;
a central management system;
high-side electrical switches (i.e., high-side circuit breakers), low-side electrical switches (i.e., low-side circuit breakers), and one high-side electrical switch corresponds to one of the low-side ground lines and one low-side electrical switch corresponds to one of the low-voltage bus ground lines.
The ground wire management cabinet is in information communication with the low-voltage side ground wire and the low-voltage bus ground wire;
The central management system and the electronic tag identification device form information communication;
The central management system is in information communication with the high-voltage side electrical switch and the low-voltage side electrical switch respectively.
Further, the electronic chip is a radio frequency identification chip. .
Further, the electronic tag identification device is a card reader capable of identifying the radio frequency identification chip.
Further, the central management system is a management system of the high-voltage side electrical switch and the low-voltage side electrical switch.
Further, the central management system is a power plant monitoring system.
Further, the locking mechanism is a magnetic locking device.
A control method of a safety maintenance device of a voltage transformation power supply line comprises the following steps:
when the voltage transformation power supply line normally operates, the high-voltage side electric switch and the low-voltage side electric switch are in a closing state, the low-voltage bus outputs voltage, and the low-voltage side ground wire and the low-voltage bus ground wire are respectively arranged in the corresponding positions of the ground wire management cabinet according to numbers;
When the voltage-transformation power supply circuit needs to be overhauled, the high-voltage side electric switch and the low-voltage side electric switch are firstly disconnected to be in a brake-separating state, then the low-voltage side ground wire is connected with the low-voltage side of the transformer in a hanging mode to be grounded, and the low-voltage bus ground wire is connected with the low-voltage bus in a hanging mode to be grounded;
It is characterized in that the method comprises the steps of,
When the ground wire management cabinet is in an unlocking mode, the low-voltage side ground wire and the low-voltage bus ground wire can be taken out from the ground wire management cabinet, and when the ground wire management cabinet is in a locking mode, the low-voltage side ground wire and the low-voltage bus ground wire are locked in the ground wire management cabinet and cannot be taken out;
The central management system can obtain the position information of the low-voltage side ground wire and the low-voltage bus ground wire through the electronic tag identification device and the electronic chip, and control the unlocking mode and the locking mode of the ground wire management cabinet;
Under the condition that the ground wire is not reset (namely, the ground wire is not placed in a corresponding position in the ground wire management cabinet), locking a corresponding electric switch to prevent the electric switch from being closed;
When the high-voltage side electric switch and the low-voltage side electric switch are in a switching-off state, the corresponding ground wire in the ground wire management cabinet is unlocked so that the ground wire can be taken out.
Further, under the control of the central management system, when the high-voltage side electric switch and the low-voltage side electric switch are in a switching-off state, the corresponding ground wire in the ground wire management cabinet is unlocked so that the ground wire can be taken out.
Further, under the control of the central management system, when the low-voltage side ground wire and the low-voltage bus ground wire are not reset, the corresponding high-voltage side electric switch and low-voltage side electric switch are locked, so that closing is prevented.
The invention has the advantages that the traditional circuit breaker can only mechanically lock the ground knife of the body, when the ground knife is in a closing state, the switch cannot be fed into a working position to be closed, but other safety measures such as ground wires independent of the switch cannot be locked. Based on the information technology of the Internet of things, the method provided by the invention implants the safety measures such as the traditional ground wires and the like into the Internet of things identification chip to be mutually related with the electric switch, and numbers the ground wires to become a part of a breaker which is required to be related, so that mutual locking is realized. When the maintenance safety measures are not removed and the ground wire is not reset, the electric switch is locked, and closing is prevented, so that the operation safety and life safety of the equipment are effectively improved.
Drawings
Fig. 1 and fig. 2 are schematic diagrams of an embodiment of a safety maintenance device for a voltage transformation power supply line according to the present invention. Wherein, FIG. 1 is a schematic diagram of a circuit during maintenance, and FIG. 2 is a schematic diagram of information communication.
In the drawing the view of the figure,
1.1 High side, 1.1A high side electrical switch,
1.2 Low side, 1.2A low side electrical switch,
A 2-step transformer, the transformer is arranged on the upper surface of the transformer,
3.1 The low-voltage side ground wire,
3.2 The low-voltage bus ground wire,
4A low-voltage bus bar is arranged,
5 Ground wire management cabinets, 5.1, a lockable first storage cabinet barrel, 5.2, a lockable second storage cabinet barrel, 5.11 and 5.21 cabinet barrel numbers,
6 A central management system.
Detailed Description
Fig. 1 and fig. 2 are schematic diagrams of an embodiment of a safety maintenance device for a voltage transformation power supply line according to the present invention. Wherein, FIG. 1 is a schematic diagram of a circuit during maintenance, and FIG. 2 is a schematic diagram of information communication. In the example, a safety maintenance device for a voltage transformation power supply line is shown in the figure, and comprises a voltage transformation power supply line, wherein high voltage is connected into a transformer 2 from a high voltage side 1.1 through a high voltage line, and low voltage is output from a low voltage side 1.2 through a low voltage bus 4 after the voltage is reduced, a high voltage side electrical switch 1.1A is arranged on the high voltage side 1.1, and a low voltage side electrical switch 1.2A is arranged on the low voltage side 1.2.
In this example, a ground wire management cabinet 5 with an electronic tag recognition device is further provided, and the ground wire management cabinet 5 has a locking mechanism, and the locking mechanism enables the ground wire management cabinet to have an unlocking mode and a locking mode. In fig. 2, the ground wire management cabinet 5 comprises a plurality of lockable storage cabinets, such as a lockable first storage cabinet 5.1 and a lockable second storage cabinet 5.2.
Meanwhile, a low-voltage side ground wire 3.1 and a low-voltage bus wire 3.2 with electronic tags are also arranged, and electronic chips are respectively implanted in the low-voltage side ground wire 3.1 and the low-voltage bus wire 3.2. The electronic chip can be identified by the electronic tag identification device.
Also comprises a central management system 6;
Also included is a high side electrical switch 1.1A (i.e., a high side circuit breaker), a low side electrical switch 1.2A (i.e., a low side circuit breaker), and one high side electrical switch 1.1A corresponds to one of the low side ground lines 3.1 and one low side electrical switch 3.2 corresponds to one of the low side bus line ground lines 3.2.
In this example, based on the information technology of the internet of things, the corresponding storage barrel cabinets in the ground wire management cabinet 5 respectively form information communication with the low-voltage side ground wire 3.1 and the low-voltage bus ground wire 3.2;
in this example, the central management system 6 is in information communication with the electronic tag identification device, and the central management system 6 is in information communication with the high-voltage side electrical switch 1.1A and the low-voltage side electrical switch 1.2A, respectively.
The present invention suggests that in this example, the electronic chip is a radio frequency identification chip. .
The invention prompts that, in this example, the electronic tag recognition device is a card reader capable of recognizing the radio frequency recognition chip.
In this example, the central management system is a management system of the high-voltage side electrical switch and the low-voltage side electrical switch. The present invention suggests that in other embodiments, the central management system is a power plant monitoring system.
The invention suggests that in this example, the locking mechanism is a magnetic locking device.
In fig. 1 and fig. 2, the invention further provides a control method of the safety maintenance device of the voltage transformation power supply line, which comprises the following steps:
when the voltage transformation power supply circuit normally operates, the high-voltage side electric switch 1.1A and the low-voltage side electric switch 1.2A are in a closing state, the low-voltage bus 4 outputs voltage, and the low-voltage side ground wire 3.1 and the low-voltage bus ground wire 3.2 are respectively arranged in corresponding cabinet barrels of the ground wire management cabinet according to numbers. As shown in fig. 2, the low-voltage side ground wire 3.1 is stored in a lockable first storage tank 5.1, and the low-voltage bus wire 3.2 is stored in a lockable second storage tank 5.2.
Before the transformer 2 and the low-voltage bus 4 need to be overhauled, the high-voltage side electric switch 1.1A and the low-voltage side electric switch 1.2A are firstly disconnected to be in a brake-separating state, then the low-voltage side ground wire 3.1 is connected with the low-voltage side 1.2 of the transformer in a hanging mode to be grounded, and the low-voltage bus ground wire 3.2 is connected with the low-voltage bus 4 in a hanging mode to be grounded.
In this example, unlike the prior art,
When the transformer 2 and the low-voltage bus 4 need to be overhauled at the same time, the high-voltage side electrical switch 1.1A and the low-voltage side electrical switch 1.2A are firstly disconnected to be in a switching-off state, under the control of the central management system 6, the first storage cabinet barrel 5.1 and the second storage cabinet barrel 5.2 of the ground wire management cabinet are automatically in an unlocking mode, and the first storage cabinet barrel 5.1 and the second storage cabinet barrel 5.2 in the ground wire management cabinet 5 are unlocked to enable the ground wires in the ground wire management cabinet to be taken out. And then the low-voltage side ground wire 3.1 is connected with the low-voltage side 1.2 of the transformer in a hanging way to be grounded, and meanwhile, the low-voltage bus wire 3.2 is connected with the low-voltage bus 4 in a hanging way to be grounded. In addition, in the maintenance process, the low-voltage side ground wire 3.1 and the low-voltage bus ground wire 3.2 are not reset, and the system automatically locks the corresponding high-voltage side electric switch 1.1A and the corresponding low-voltage side electric switch 1.2A, so that manual closing is prevented, and safety accidents caused by misoperation are avoided.
After the maintenance of the transformer 2 and the low-voltage bus 4 is completed, the grounding of the low-voltage side 1.2 and the low-voltage bus 4 of the transformer is firstly disconnected, then the low-voltage side ground wire 3.1 and the low-voltage bus ground wire 3.2 are respectively reset (i.e. the low-voltage side ground wire 3.1 and the low-voltage bus ground wire 3.2 are respectively put into the first storage cabinet 5.1 and the second storage cabinet 5.2), and then under the automatic control of the system, the corresponding high-voltage side electric switch 1.1A and low-voltage electric switch 1.2A are unlocked, and the high-voltage side electric switch 1.1A and the low-voltage electric switch 1.2A can be switched on for supplying power.
Similarly, when the transformer 2 or the low-voltage bus bar 4 needs to be separately serviced, the same safety operation as described above is performed.
In this example, since the ground wire management cabinet 5 is provided with the electronic tag recognition device capable of recognizing the position, the electronic tag recognition device is a card reader of the radio frequency recognition chip, and the low-voltage side ground wire 3.1 and the low-voltage bus wire 3.2 are respectively provided with the electronic chip. Therefore, the electronic tag identification device can know whether the low-voltage side ground wire 3.1 and the low-voltage bus wire 3.2 are in a reset state or not, and transmit information to the central management system 6, and the central management system 6 controls unlocking or locking of the corresponding cabinet barrel of the ground wire management cabinet 5.
According to the technical scheme provided by the invention, based on the Internet of things information technology, as the electronic tag identification device capable of identifying the position is added in the ground wire management cabinet 5, the electronic chips are respectively implanted in the low-voltage side ground wire 3.1 and the low-voltage bus ground wire 3.2, and the central management system 6 is respectively communicated with the ground wire management cabinet 5, the high-voltage side electrical switch 1.1A and the low-voltage side electrical switch 1.2A to form information, so that the whole system forms an integral safety maintenance protection device. The low-voltage side ground wire 3.1 and the low-voltage bus wire 3.2 are respectively linked with the high-voltage side electric switch 1.1A and the low-voltage side electric switch 1.2A in terms of safety protection. The safety of the power supply line maintenance process is effectively ensured.
Claims (9)
1. The utility model provides a vary voltage power supply line safety maintenance device, includes vary voltage power supply line, high voltage side access transformer is followed to high voltage line through high voltage line, and the low voltage is exported through the low voltage busbar from the low voltage side after the step down the high voltage side is provided with high voltage side electrical switch the low voltage side sets up low voltage side electrical switch, characterized by still includes:
The ground wire management cabinet with the electronic tag identification device further comprises a first storage cabinet barrel and a second storage cabinet barrel, wherein the ground wire management cabinet is provided with a locking mechanism, and the locking mechanism enables the ground wire management cabinet to have an unlocking mode and a locking mode;
The electronic tag identification device comprises a low-voltage side ground wire and a low-voltage bus ground wire of the electronic tag, wherein electronic chips are respectively implanted in the low-voltage side ground wire and the low-voltage bus ground wire, and the electronic chips can be identified by the electronic tag identification device;
a central management system;
a high-side electrical switch, a low-side electrical switch, and one high-side electrical switch corresponding to one of the low-side ground lines and one low-side electrical switch corresponding to one of the low-voltage bus ground lines;
the ground wire management cabinet is in information communication with the low-voltage side ground wire and the low-voltage bus ground wire;
The central management system and the electronic tag identification device form information communication;
The central management system is respectively communicated with the high-voltage side electrical switch and the low-voltage side electrical switch in an information manner;
The electronic tag identification device can know whether the low-voltage side ground wire and the low-voltage bus ground wire are in a reset state or not, and transmits information to the central management system, and the central management system controls unlocking or locking of the corresponding cabinet barrel of the ground wire management cabinet.
2. The transformer feeder line safety maintenance device of claim 1, wherein the electronic chip is a radio frequency identification chip.
3. The transformer power supply circuit safety maintenance device according to claim 2, wherein the electronic tag identification device is a card reader capable of identifying the radio frequency identification chip.
4. The safety overhaul device for a voltage transformation power supply line according to claim 1, wherein the central management system is a management system of the high-voltage side electric switch and the low-voltage side electric switch.
5. The safety overhaul device for a variable voltage power supply line according to claim 1, wherein the central management system is a power plant monitoring system.
6. The safety overhaul device for a variable voltage power supply line according to claim 1, wherein the locking mechanism is a magnetic locking device.
7. A control method of a safety maintenance device for a voltage transformation power supply line, comprising the safety maintenance device for a voltage transformation power supply line according to any one of claims 1 to 6, further comprising the steps of:
when the voltage transformation power supply line normally operates, the high-voltage side electric switch and the low-voltage side electric switch are in a closing state, the low-voltage bus outputs voltage, and the low-voltage side ground wire and the low-voltage bus ground wire are respectively arranged in the corresponding positions of the ground wire management cabinet according to numbers;
When the voltage-transformation power supply circuit needs to be overhauled, the high-voltage side electric switch and the low-voltage side electric switch are firstly disconnected to be in a brake-separating state, then the low-voltage side ground wire is connected with the low-voltage side of the transformer in a hanging mode to be grounded, and the low-voltage bus ground wire is connected with the low-voltage bus in a hanging mode to be grounded;
It is characterized in that the method comprises the steps of,
When the ground wire management cabinet is in an unlocking mode, the low-voltage side ground wire and the low-voltage bus ground wire can be taken out from the ground wire management cabinet, and when the ground wire management cabinet is in a locking mode, the low-voltage side ground wire and the low-voltage bus ground wire are locked in the ground wire management cabinet and cannot be taken out;
The central management system can obtain the position information of the low-voltage side ground wire and the low-voltage bus ground wire through the electronic tag identification device and the electronic chip, and control the unlocking mode and the locking mode of the ground wire management cabinet;
Under the condition that the ground wire is not reset, locking the corresponding electric switch to prevent the electric switch from being closed;
When the high-voltage side electric switch and the low-voltage side electric switch are in a switching-off state, the corresponding ground wire in the ground wire management cabinet is unlocked so that the ground wire can be taken out.
8. The method according to claim 7, wherein under the control of the central management system, when the high-voltage side electrical switch and the low-voltage side electrical switch are in the off state, the corresponding ground wire in the ground wire management cabinet is unlocked to be taken out.
9. The method according to claim 7, wherein under the control of the central management system, when the low-voltage side ground wire and the low-voltage bus wire are not returned, the corresponding high-voltage side electric switch and low-voltage side electric switch are locked to prevent closing.
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| CN202111154863.0A CN113902071B (en) | 2021-09-29 | 2021-09-29 | A transformer power supply line safety inspection device and control method thereof |
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| CN202111154863.0A CN113902071B (en) | 2021-09-29 | 2021-09-29 | A transformer power supply line safety inspection device and control method thereof |
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