CN112039015A - Alarm information sending device and method, protection device and transformer substation - Google Patents

Abstract

The present application relates to an alarm information sending device and method, as well as a protection device and a substation. The alarm information sending device is applied to at least two protection devices of a substation, and the device includes a detection module and a switch-in module. The detection module is arranged on the first protection device and is used for detecting the first protection device and sending out the first alarm information when the first protection device has a fault. The opening module is arranged on the second protection device and is connected with the detection module. The input module is used for acquiring the second alarm information according to the first alarm information. The second protection device is configured to receive the second alarm information, and send the second alarm information to the monitoring master station. Using the alarm information sending device provided by the present application, the monitoring master station can distinguish which protection device is faulty according to the received second alarm information.

Description

Alarm information sending device and method, protection device and substation

technical field

The present application relates to the technical field of power systems, and in particular, to a device and method for sending alarm information, a protection device and a substation.

Background technique

With the development of science and technology, the control of substations is becoming more and more intelligent. Through the protection devices installed in various switch rooms in the substation, the devices such as transmission lines, circuit breakers and transformers in the switch room are protected. When the transmission line or circuit breaker fails, the protection device can send warning information to the monitoring master station of the substation, so that maintenance personnel can repair the transmission line or circuit breaker in time to ensure the normal operation of the substation. However, the protection device will also fail during operation, and at this time, it is necessary to send the information of the failure of the protection device to the monitoring master station in time.

In the traditional technology, a measurement and control device is usually set between the protection device and the monitoring master station, and the information of the failure of the protection device can be sent to the monitoring master station through the measurement and control device. However, when the protection device fails, the measurement and control device will obtain a failure information and send this information to the monitoring master station, but the monitoring master station cannot distinguish which protection device in the switch room is faulty according to the fault information.

SUMMARY OF THE INVENTION

Based on this, it is necessary to provide a device and method for sending alarm information, a protection device and a substation to address the above technical problems.

On the one hand, an embodiment of the present application provides a device for sending alarm information, which is applied to at least two protection devices in a substation, including:

a detection module, disposed on the first protection device, for detecting the first protection device, and sending out a first alarm message when the first protection device is faulty; and

The switch-in module is arranged on the second protection device and is connected to the detection module, the switch-in module is used for obtaining second alarm information according to the first alarm information, and the second protection device is used for receiving the second alarm information, and send the second alarm information to the monitoring master station.

In one of the embodiments, the switch-in module includes an optocoupler for acquiring second alarm information according to the first alarm information.

In one embodiment, the optocoupler includes:

an illuminator, connected to the detection module, and configured to emit light according to the first alarm information to obtain an alarm light;

The light receiver is used for generating a photocurrent according to the warning light to obtain the second warning information.

In one embodiment, the detection module includes a relay auxiliary contact for sending out the first alarm information when the first protection device has a fault.

On the other hand, an embodiment of the present application provides a protection device, which is applied to a substation, and includes: the alarm information sending device according to the foregoing embodiment.

In another aspect, an embodiment of the present application also provides a substation, including:

The alarm information sending device according to the above embodiment;

a first protection device, the detection module is arranged on the first protection device;

a second protection device, the opening module is arranged on the second protection device, and is used for receiving the second alarm information;

A monitoring master station is connected in communication with the second protection device.

In one of the embodiments, the monitoring master station and the second protection device are connected through optical fiber Ethernet.

An embodiment of the present application further provides a method for sending alarm information by applying the alarm information sending apparatus described in the above embodiment, including:

When the first protection device is faulty, the detection module sends out the first alarm information;

obtaining the second alarm information according to the first alarm information by the open module;

The second protection device receives the second alarm information and sends it to the monitoring master station.

In one embodiment, the detection module includes a relay auxiliary contact, and when the first protection device is faulty, the detection module generates the first alarm information, including:

If there is a fault in the first protection device, the auxiliary contact of the relay is closed, and the information passing through the auxiliary contact of the relay is the first alarm information.

In one embodiment, the switch-in module includes a photocoupler, and the switch-in module acquires the second alarm information according to the first alarm information, including:

The photoelectric coupler obtains an alarm light according to the first alarm information;

The photocoupler obtains the second alarm information according to the alarm light.

Embodiments of the present application provide a device and method for sending alarm information, a protection device, and a substation. The alarm information sending device includes a detection module and an entry module. The detection module is arranged on the first protection device, and is used for sending out the first alarm information when the first protection device has a fault. The opening module is arranged on the second protection device and is connected with the detection module. The alarm information sending apparatus provided in this embodiment sends the first alarm information through the detection module, and the switch-in module can obtain the second alarm information according to the first alarm information, and send the second alarm information to the monitoring master station. In this way, the administrator can obtain the second alarm information sent by the second protection device by monitoring the master station, and then according to the preset settings, can clearly determine that the first protection device is faulty. Using the alarm information sending device provided in this embodiment, the administrator can distinguish which protection device is faulty at the monitoring master station.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application or in the traditional technology, the following briefly introduces the accompanying drawings that are used in the description of the embodiments or the traditional technology. Obviously, the drawings in the following description are only the For some embodiments of the application, for those skilled in the art, other drawings can also be obtained according to these drawings without any creative effort.

FIG. 1 is a schematic structural diagram of an apparatus for sending alarm information provided by an embodiment of the present application;

FIG. 2 is a schematic structural diagram of an apparatus for sending alarm information provided by an embodiment of the present application;

3 is a schematic structural diagram of a substation provided by an embodiment of the present application;

4 is a schematic flowchart of steps of a method for sending alarm information provided by an embodiment of the present application;

FIG. 5 is a schematic flowchart of steps of a method for sending alarm information according to an embodiment of the present application.

Description of reference numbers:

10. Alarm information sending device; 20. Monitoring master station; 21. First protection device; 22. Second protection device; 30. Substation; 100. Detection module; 211, light emitter; 212, light receiver.

Detailed ways

In order to make the above objects, features and advantages of the present application more clearly understood, the specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present application. Therefore, the present application is not limited by the specific embodiments disclosed below.

The technical solution of the present application and how the technical solution of the present application solves the technical problem will be described in detail below with specific embodiments. The following specific embodiments may be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. The embodiments of the present application will be described below with reference to the accompanying drawings.

The serial numbers themselves, such as "first", "second", etc., for the components herein are only used to distinguish the described objects, and do not have any order or technical meaning. The "connection" and "connection" mentioned in this application, unless otherwise specified, include both direct and indirect connections (connections). In the description of this application, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", The orientation or positional relationship indicated by "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description , rather than indicating or implying that the referred device or element must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as a limitation on the present application.

In this application, unless otherwise expressly stated and defined, a first feature "on" or "under" a second feature may be in direct contact with the first and second features, or indirectly through an intermediary between the first and second features touch. Also, the first feature being "above", "over" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is level higher than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly or obliquely below the second feature, or simply means that the first feature has a lower level than the second feature.

The alarm information sending device provided in the embodiment of the present application is applied to at least two protection devices in a substation. The protection device is used to send alarm information to the monitoring master station of the substation in the event of line short circuit, breaker failure, transformer and capacitor failure in the substation, so that the staff can repair the fault in the substation in time. The protective device may be a computer device, a microprocessor chip or other device. During the operation of the substation, the protection device may have hardware failure or software failure. It is necessary to send the information of the failure of the protection device to the monitoring master station in time, so that the staff can repair the protection device in time. Wherein, the hardware failure includes the failure of the network port, panel or communication interface of the protection device; the software failure includes the program running error in the protection device. When the first protection device fails, the alarm information sending device provided by the present application can send the alarm information to the monitoring master station through the second protection device, so that the staff can repair the first protection device in time.

Referring to FIG. 1 , an embodiment of the present application provides an alarm information sending apparatus 10 including a detection module 100 and an entry module 200 .

The detection module 100 is disposed on the first protection device 21 for detecting the first protection device 21 and sending out a first alarm message when the first protection device 21 is faulty. The switch-in module 200 is arranged on the second protection device 22, the switch-in module 200 is connected with the detection module 100, and is used for obtaining the second alarm information according to the first alarm information, and the second protection device 22 is used for receiving the second alarm information , and send the second alarm information to the monitoring master station 20 .

The first protection device 21 may be a protection device in any switch room in the substation, and the second protection device 22 may be a protection device in a switch room close to the first protection device 21 in the same substation. The detection module 100 may issue a first alarm message after receiving a signal sent by the first protection device 21 when it detects that it has a fault, or it may use the detection module 100 to detect whether the first protection device 21 is faulty. If there is a fault, the first alarm message is sent. The first alarm information may be control information, or may be voltage information or current information. This embodiment does not impose any restrictions on the type and structure of the detection module 100, as long as the first alarm information can be issued when the first protection device 21 fails. The type of the first alarm information can be set according to the type of the detection module 100 , which is not limited in this embodiment, as long as its function can be realized.

The drive-in module 200 is a device for realizing the connection between the first protection device 21 and the second protection device 22 . The entry module 200 may acquire the second alarm information according to the first alarm information. If the switch-in module 200 is connected to the second protection device 22, the second protection device 22 can receive the second alarm information and send it to the monitoring master station 20 of the substation, and the management personnel of the monitoring master station 20 will promptly notify the maintenance A person maintains the first protection device 21 . The types of the second alarm information and the first alarm information may be the same or different. When the detection module 100 and the switch-in module 200 are set, the monitoring master station 20 can determine that the second alarm information sent by the second protection device 22 indicates that the first protection device 21 is faulty. After two alarm messages, it can be determined that the first protection device 21 is faulty.

In a specific embodiment, it is assumed that there are 3 protection devices in a substation, namely protection device A1, protection device A2 and protection device A3. The distance between the protection device A1 and the protection device A2 is similar, the distance between the protection device A2 and the protection device A3 is similar, and the distance between the protection device A3 and the protection device A1 is similar. Each protection device is provided with a detection module and an entry module. The opening module in the protection device A2 is connected with the detection module in the protection device A1, the opening module in the protection device A3 is connected with the detection module in the protection device A2, and the opening module in the protection device A1 is connected with the protection device. The detection module in device A3 is connected. After receiving the alarm information sent by the protection device A1, the monitoring master station 20 can determine that the protection device A3 is faulty; after receiving the alarm information sent by the protection device A2, the monitoring master station 20 can determine that the protection device A1 is faulty; After receiving the alarm information sent by the protection device A3, the monitoring master station 20 can determine that the protection device A2 is faulty. In addition, the protection device A1 is similar to the protection device A2, and the use of cables can be saved when the detection module in the protection device A1 and the input module in the protection device A2 are connected by cables. Similarly, when the detection module in the protection device A2 and the input module in the protection device A3 are connected by cables, the use of cables can also be saved.

The working principle of the alarm information sending device 10 is as follows:

During the operation of the substation, the detection module 100 in the first protection device 21 sends out first alarm information when the first protection device 21 fails. The switch-in module 200 in the second protection device 22 is connected to the detection module 100, and can obtain the first alarm information, and obtain the second alarm information according to the first alarm information. The second protection device 22 may send the second alarm information to the monitoring master station 20 . According to the second alarm information received by the monitoring master station 20 , the management personnel promptly notify the maintenance personnel to perform maintenance on the first protection device 21 .

The alarm information sending apparatus 10 provided in this embodiment includes a detection module 100 and an entry module 200 . The detection module 100 is disposed in the first protection device 21 and is used to issue a first alarm message when the first protection device 21 is faulty. The drive-in module 200 is disposed on the second protection device 22 and is connected to the detection module 100 . The alarm information sending apparatus 10 provided in this embodiment sends the first alarm information through the detection module 100 , and the switch-in module 200 can obtain the second alarm information according to the first alarm information, and send the second alarm information to the monitoring master station 20 . In this way, the administrator can obtain the second alarm information sent by the second protection device 22 by monitoring the master station 20, and then according to the preset settings, can clearly determine that the first protection device 21 is faulty. Using the alarm information sending device 10 provided in this embodiment, the administrator can distinguish which protection device is faulty at the monitoring master station 20, so as to promptly notify the maintenance personnel to repair the faulty protection device, so as to ensure the normal operation of the protection device , which can ensure the safe operation of the substation.

In one embodiment, the switch-in module 200 includes a photocoupler 210 for acquiring the second alarm information according to the first alarm information. The optocoupler 210 is also called an opto-isolator, or optocoupler for short. The optocoupler 210 is a device that transmits electrical signals using light as a medium. The optocoupler 210 has a good isolation effect on the input first alarm information and the output second alarm information. The transmission of one alarm information to the second alarm information is unidirectional. The optocoupler 210 has good electrical insulation and anti-interference capabilities, and can improve the accuracy of the acquired second alarm information.

Referring to FIG. 2 , in one embodiment, the optocoupler 210 includes a light emitter 211 and a light receiver 212 . The light emitting device 211 is connected to the detection module 100, and is used for emitting light according to the first alarm information to obtain the alarm light. The light receiver 212 is used for generating a photocurrent according to the warning light to obtain the second warning information. In a specific embodiment, the light emitter 211 is a light emitting diode, and the light receiver 212 is a photodetector. After the illuminator 211 receives the first alarm information sent by the detection module 100, the first alarm information will drive the illuminator 211 to emit light of a certain wavelength, which is recorded as alarm light. After receiving the warning light, the light receiver 212 will generate a photocurrent, and after further amplification, the second warning information can be obtained. In this embodiment, the coupling capacitance between the light emitter 211 and the light receiver 212 is small, and the common mode rejection ratio of the photocoupler 210 is very high, which can make the obtained second alarm information more accurate.

In one embodiment, the detection module 100 includes a relay auxiliary contact for sending out a first alarm message when the first protection device 21 has a fault. Auxiliary contacts of relays refer to switching devices that can cut off the circuit. When the first protection device 21 operates normally, the auxiliary contact of the relay is in a normally open state. When the first protection device 21 fails, the auxiliary contact of the relay will be closed, the auxiliary contact of the relay will be turned on, current will flow, or there will be a voltage at both ends of the auxiliary contact of the relay. If the illuminator 211 in the optocoupler 210 is connected in series with the relay auxiliary contact, the first alarm information is current information, and the illuminator 211 will obtain the alarm light according to the current information; if the illuminator 211 in the photocoupler 210 is connected to the relay auxiliary If the contacts are connected in parallel, the first alarm information is voltage information, and the light emitter 211 will obtain an alarm light according to the voltage information. In this embodiment, the detection module 100 has a simple structure and low cost.

An embodiment of the present application provides a protection device, which is arranged in a switch cabinet of a substation. The protection device includes the alarm information sending device 10 provided in the above embodiment. That is, the detection module 100 and the opening module 200 are provided in the protection device. The protection device also includes devices such as a communication device or a power module. Since the protection device includes the alarm information sending device 10 , the protection device has all the structures and beneficial effects of the alarm information sending device 10 , which will not be repeated here.

Referring to FIG. 3 , an embodiment of the present application provides a substation 30 including an alarm information sending device 10 , a first protection device 21 , a second protection device 22 , and a monitoring master station 20 as provided in the above-mentioned embodiments. The detection module 100 is disposed on the first protection device 21 . The switch-in module 200 is disposed in the second protection device 22 for receiving the second alarm information. The monitoring master station 20 is connected in communication with the second protection device 22 . Through the second protection device 22 , when the first protection device 21 fails, the second alarm information can be sent to the monitoring master station 20 , so that the management personnel promptly notify the maintenance personnel to repair the first protection device 21 . For the specific description of the first protection device 21 , the second protection device 22 , the detection module 100 and the opening module 200 , please refer to the description of the first protection device 21 , the second protection device 22 , the detection module in the alarm information sending device 10 . The description of the group 100 and the entry module 200 will not be repeated here. Since the substation 30 includes the alarm information sending device 10 , the substation 30 has all the structures and beneficial effects of the alarm information sending device 10 , which will not be repeated here.

In one embodiment, the monitoring master station 20 and the second protection device 22 are connected through optical fiber Ethernet. Optical Ethernet refers to the use of Ethernet LAN datagrams running on optical fibers to access the SP network or access in the SP network, and the underlying connection can run at any standard Ethernet speed. The optical fiber Ethernet technology is simple, and the transmission distance is long, and at the same time, it can easily handle the needs of data and circuit switching applications, so that the communication between the monitoring master station 20 and the second protection device 22 is more rapid and accurate.

Referring to FIG. 4 , an embodiment of the present application provides a method for sending alarm information by applying the alarm information sending apparatus provided by the above-mentioned embodiment, including:

S100, when the first protection device is faulty, the detection module sends out first alarm information.

For the specific description of the first protection device, the detection module, and the first alarm information in this embodiment, reference may be made to the description in the embodiment of the above-mentioned alarm information sending device, and details are not repeated here. When the first protection device fails, it may be that the first protection device sends a signal to the detection module when it detects that it has a failure, and the detection module sends out the first alarm information according to the signal; it may also be that the detection module detects The first protection device is faulty, and then the first alarm information is sent. This embodiment does not impose any limitation on this, as long as its function can be realized.

S200, the entry module acquires second alarm information according to the first alarm information.

In this embodiment, for the specific description of the opening module and the second alarm information, reference may be made to the description in the embodiment of the above-mentioned alarm information sending apparatus, and details are not repeated here. After receiving the first alarm information sent by the detection module in the first protection device, the switch-in module in the second protection device converts the first alarm information to obtain the second alarm information. The first alarm information and the second alarm information may be the same or different. The first alarm information may be set according to the type of the detection module, and the second alarm information may be set according to the type of the input module. No restrictions apply.

S300, the second protection device receives the second alarm information and sends it to the monitoring master station.

The opening module is arranged on the second protection device and connected with the second protection device, and the second protection device can receive the second alarm information. The second protection device is connected in communication with the monitoring master station, and the second alarm information can be sent to the monitoring master station through the second protection device, so that the management personnel can notify the maintenance personnel of the second alarm information received by the monitoring master station. A protective device for maintenance.

In the method for sending alarm information provided by this embodiment, when the first protection device is faulty, the detection module will send out the first alarm information; the input module in the second protection device can obtain the second alarm information according to the first alarm information ; The second alarm information can be sent to the monitoring master station through the second protection device. According to the second alarm information received by the monitoring master station, the management personnel can promptly notify the maintenance personnel to repair the first protection device, so as to ensure the normal operation of the first protection device, thereby ensuring the safe operation of the substation. In addition, if the alarm information sending method is implemented by using the alarm information sending device, then the party has all the beneficial effects of the alarm information sending device, which will not be repeated here.

Referring to FIG. 5 , in one embodiment, the detection module includes a relay auxiliary contact. In step S100, when the first protection device is faulty, the detection module generates first alarm information, including:

S110, if the first protection device has a fault, the auxiliary contact of the relay is closed, and the information passing through the auxiliary contact of the relay is the first alarm information.

In this embodiment, for the specific description of the auxiliary contact of the relay, reference may be made to the description in the embodiment of the above-mentioned apparatus for sending alarm information, which will not be repeated here. In a specific embodiment, when the first protection device has a fault, a control signal is sent to control the auxiliary contact of the relay to be closed, so that the auxiliary contact of the relay is turned on. The information passing through the auxiliary contact of the relay may be voltage information or current information, and the first alarm information may be voltage information or current information. If the switch-in module is connected in parallel with the relay auxiliary contact, the first alarm information received by the switch-in module is voltage information; if the switch-in module is connected in series with the relay auxiliary contact, the first alarm information received by the switch-in module for current information. In this embodiment, the relay auxiliary contact is used to realize the sending of the first alarm information, which is very simple and convenient.

Please continue to refer to FIG. 5. In one embodiment, the switch module includes a photocoupler, and step S200, the switch module obtains the second alarm information according to the first alarm information, including:

S210, the photocoupler obtains an alarm light according to the first alarm information;

S220, the photocoupler obtains second alarm information according to the alarm light.

In this embodiment, for the specific description of the optocoupler, reference may be made to the description in the above-mentioned embodiment of the apparatus for sending alarm information, which will not be repeated here. The photocoupler can realize the conversion from electrical signal to optical signal and then to electrical signal, then the first alarm information can be converted into an optical signal by using the photoelectric coupler, that is, the alarm light can be obtained according to the first alarm information; The optical signal is converted into the second alarm information, that is, the second alarm information can be obtained according to the alarm light. In this embodiment, a photocoupler is used to realize the conversion between the first alarm information and the second alarm information, so it has all the beneficial effects of the photocoupler, which will not be repeated here.

The technical features of the above embodiments can be combined arbitrarily. In order to make the description simple, all possible combinations of the technical features in the above embodiments are not described. However, as long as there is no contradiction in the combination of these technical features It is considered to be the range described in this specification.

The above-mentioned embodiments only represent several embodiments of the present application, and the descriptions thereof are relatively specific and detailed, but should not be construed as a limitation on the scope of the patent of the present application. It should be noted that, for those skilled in the art, without departing from the concept of the present application, several modifications and improvements can be made, which all belong to the protection scope of the present application. Therefore, the scope of protection of the patent of the present application shall be subject to the appended claims.

Claims (10)

1. An alarm information sending device, applied to at least two protection devices of a substation, characterized in that, comprising: a detection module, disposed on the first protection device, for detecting the first protection device, and sending out a first alarm message when the first protection device is faulty; and The switch-in module is arranged on the second protection device and is connected to the detection module, the switch-in module is used for obtaining second alarm information according to the first alarm information, and the second protection device is used for receiving the second alarm information, and send the second alarm information to the monitoring master station. 2 . The alarm information sending device according to claim 1 , wherein the switch-in module comprises a photoelectric coupler, which is used for acquiring the second alarm information according to the first alarm information. 3 . 3. The alarm information sending device according to claim 2, wherein the optocoupler comprises: an illuminator, connected to the detection module, and configured to emit light according to the first alarm information to obtain an alarm light; The light receiver is used for generating a photocurrent according to the warning light to obtain the second warning information. 4 . The alarm information sending device according to claim 1 , wherein the detection module comprises a relay auxiliary contact for sending the first alarm information when the first protection device has a fault. 5 . 5 . A protection device applied to a substation, characterized in that it comprises: the alarm information sending device according to any one of claims 1 to 4 . 6. A substation, characterized in that, comprising: The alarm information sending device according to any one of claims 1 to 4; a first protection device, the detection module is arranged on the first protection device; a second protection device, the opening module is arranged on the second protection device, and is used for receiving the second alarm information; A monitoring master station is connected in communication with the second protection device. 7 . The substation according to claim 6 , wherein the monitoring master station and the second protection device are connected through optical fiber Ethernet. 8 . 8. A method for sending alarm information using the alarm information sending device according to any one of claims 1 to 4, characterized in that, comprising: When the first protection device is faulty, the detection module sends out the first alarm information; obtaining the second alarm information according to the first alarm information by the open module; The second protection device receives the second alarm information and sends it to the monitoring master station. 9 . The method according to claim 8 , wherein the detection module comprises a relay auxiliary contact, and the detection module generates the first alarm information when the first protection device has a fault. 10 . ,include: If there is a fault in the first protection device, the auxiliary contact of the relay is closed, and the information passing through the auxiliary contact of the relay is the first alarm information. 10 . The method according to claim 9 , wherein the switch-in module comprises a photocoupler, and the switch-in module obtains the second alarm information according to the first alarm information, comprising: 10 . The photoelectric coupler obtains an alarm light according to the first alarm information; The photocoupler obtains the second alarm information according to the alarm light.

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