CN112039015B - Alarm information sending device and method, protection device and transformer substation - Google Patents
Alarm information sending device and method, protection device and transformer substation Download PDFInfo
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- CN112039015B CN112039015B CN202010886266.6A CN202010886266A CN112039015B CN 112039015 B CN112039015 B CN 112039015B CN 202010886266 A CN202010886266 A CN 202010886266A CN 112039015 B CN112039015 B CN 112039015B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H1/00—Details of emergency protective circuit arrangements
- H02H1/0061—Details of emergency protective circuit arrangements concerning transmission of signals
- H02H1/0069—Details of emergency protective circuit arrangements concerning transmission of signals by means of light or heat rays
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
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- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The application relates to an alarm information sending device and method, a protection device and a transformer substation. The alarm information sending device is applied to at least two protection devices of a transformer substation and comprises a detection module and a start-in module. The detection module is arranged on the first protection device and used for detecting the first protection device and sending out first alarm information when the first protection device fails. The opening module is arranged on the second protection device and is connected with the detection module. The opening module is used for acquiring second alarm information according to the first alarm information. The second protection device is used for receiving the second alarm information and sending the second alarm information to the monitoring master station. By using the alarm information sending device provided by the application, the monitoring master station can distinguish which protection device fails according to the received second alarm information.
Description
Technical Field
The present application relates to the technical field of power systems, and in particular, to an alarm information sending device and method, and a protection device and transformer substation.
Background
With the development of scientific technology, the control of the transformer substation is more and more intelligent. Devices such as a power transmission line, a circuit breaker, a transformer and the like in a switching room are protected by protection devices installed in various switching rooms in a transformer substation. When the transmission line or the breaker breaks down, warning information can be sent to a monitoring master station of the transformer substation through the protection device, so that maintenance personnel can maintain the transmission line or the breaker in time to ensure normal operation of the transformer substation. However, the protection device also has a fault in the operation process, and at this time, the information of the fault of the protection device needs to be sent to the monitoring master station in time.
In the prior art, a measurement and control device is generally arranged between the protection device and the monitoring main station, and the information of the failure of the protection device can be sent to the monitoring main station through the measurement and control device. However, when the protection device fails, the measurement and control device obtains a failure message and sends the failure message to the monitoring master, but the monitoring master cannot distinguish which protection device in the switch room fails according to the failure message.
Disclosure of Invention
In view of the foregoing, it is desirable to provide an alarm information transmitting apparatus and method, and a protection apparatus and a transformer substation.
In one aspect, an embodiment of the present application provides an alarm information sending device, applied to at least two protection devices of a substation, including:
the detection module is arranged on the first protection device and used for detecting the first protection device and sending out first alarm information when the first protection device has faults; and
the second protection device is used for receiving the second alarm information and sending the second alarm information to the monitoring master station.
In one embodiment, the switch-in module includes a photoelectric coupler, and is configured to obtain the second alarm information according to the first alarm information.
In one embodiment, the optocoupler includes:
the illuminator is connected with the detection module and is used for emitting light according to the first alarm information to obtain alarm light;
and the light receiver is used for generating photocurrent according to the alarm light rays to obtain the second alarm information.
In one embodiment, the detection module includes a relay auxiliary contact for sending the first alarm information when the first protection device fails.
In another aspect, an embodiment of the present application provides a protection device applied to a substation, including: the alarm information transmitting apparatus according to the above embodiment.
In still another aspect, an embodiment of the present application further provides a substation, including:
the alarm information transmitting apparatus as described in the above embodiment;
the detection module is arranged on the first protection device;
the second protection device is arranged on the opening module and is used for receiving the second alarm information;
and the monitoring master station is in communication connection with the second protection device.
In one embodiment, the monitoring master station is connected to the second protection device through an optical fiber ethernet.
An embodiment of the present application further provides a method for sending alarm information by using the alarm information sending device described in the foregoing embodiment, including:
when the first protection device has a fault, the detection module sends out the first alarm information;
the start-up module acquires the second alarm information according to the first alarm information;
and the second protection device receives the second alarm information and sends the second alarm information to the monitoring master station.
In one embodiment, the detection module includes a relay auxiliary contact, and when the first protection device fails, the detection module generates the first alarm information, including:
if the first protection device has a fault, the auxiliary relay contact is closed, and the information passing through the auxiliary relay contact is the first alarm information.
In one embodiment, the opening module includes a photoelectric coupler, and the opening module obtains the second alarm information according to the first alarm information, including:
the photoelectric coupler obtains alarming light according to the first alarming information;
and the photoelectric coupler obtains the second alarm information according to the alarm light.
The embodiment of the application provides an alarm information sending device and method, a protection device and a transformer substation. The alarm information sending device comprises a detection module and an entry module. The detection module is arranged on the first protection device and is used for sending out first alarm information when the first protection device fails. The opening module is arranged on the second protection device and is connected with the detection module. The alarm information sending device provided by the embodiment sends the first alarm information through the detection module, and the start-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. Therefore, the manager can acquire the second alarm information sent by the second protection device through the monitoring master station, and can clearly judge that the first protection device fails according to the preset setting. By using the alarm information sending device provided by the embodiment, a manager can distinguish which protection device has a fault at the monitoring master station.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments or the conventional techniques of the present application, the drawings required for the descriptions of the embodiments or the conventional techniques will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to the drawings without inventive effort for different persons skilled in the art.
FIG. 1 is a schematic diagram of an alarm information sending device according to an embodiment of the present application;
FIG. 2 is a schematic diagram of an alarm information sending device according to an embodiment of the present application;
fig. 3 is a schematic structural diagram of a substation according to an embodiment of the present application;
FIG. 4 is a flowchart illustrating steps of a method for sending alarm information according to an embodiment of the present application;
fig. 5 is a flowchart illustrating steps of a method for sending alarm information according to an embodiment of the present application.
Reference numerals illustrate:
10. an alarm information transmitting device; 20. a monitoring master station; 21. a first protection device; 22. a second protection device; 30. a transformer station; 100. a detection module; 200. opening a module; 210. a photocoupler; 211. a light emitter; 212. a light receiver.
Detailed Description
In order that the above objects, features and advantages of the application will be readily understood, a more particular description of the application will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. The present application may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the application, whereby the application is not limited to the specific embodiments disclosed below.
The following describes the technical scheme of the present application and how the technical scheme of the present application solves the technical problems in detail with specific embodiments. The following embodiments may be combined with each other, and the same or similar concepts or processes may not be described in detail in some embodiments. Embodiments of the present application will be described below with reference to the accompanying drawings.
The numbering of the components itself, e.g. "first", "second", etc., is used herein merely to distinguish between the described objects and does not have any sequential or technical meaning. The term "coupled" as used herein includes both direct and indirect coupling (coupling), unless otherwise indicated. In the description of the present application, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the device or element in question must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application.
In the present application, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
The alarm information sending device provided by the embodiment of the application is applied to at least two protection devices in a transformer substation. The protection device is used for sending alarm information to the monitoring master station of the transformer substation when line short circuit, breaker failure and faults of the transformer and the capacitor occur in the transformer substation, so that a worker can repair the faults in the transformer substation in time. The protection means may be a computer device, a micro-processing chip or other device. In the operation process of the transformer substation, the protection device may have hardware faults or software faults, and the information of the faults of the protection device needs to be sent to the monitoring master station in time so that a worker can repair the protection device in time. The hardware faults comprise faults of a network port, a panel or a communication interface of the protection device; software faults include program running errors in the protection device. When the first protection device fails, the alarm information sending device provided by the application can send the alarm information to the monitoring master station through the second protection device, so that a worker can repair the first protection device in time.
Referring to fig. 1, an alarm information sending device 10 according to an embodiment of the present application includes a detection module 100 and an entry module 200.
The detection module 100 is disposed on the first protection device 21, and is configured to detect the first protection device 21 and send out a first alarm message when the first protection device 21 fails. The switch-in module 200 is disposed on the second protection device 22, and the switch-in module 200 is connected with the detection module 100 and is configured to obtain second alarm information according to the first alarm information, and the second protection device 22 is configured to receive 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 one of the switch rooms 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 send the first alarm information after receiving the signal sent by the first protection device 21 when detecting that the first protection device itself has a fault, or may detect whether the first protection device 21 has a fault by using the detection module 100, and if the first protection device has a fault, send the first alarm information. The first alarm information may be control information, voltage information or current information. The present embodiment does not limit the kind and structure of the detection module 100, as long as the first alarm information can be sent out when the first protection device 21 fails. The type of the first alarm information may be set according to the type of the detection module 100, which is not limited in this embodiment, so long as the function thereof can be implemented.
The switch-in module 200 is a device for connecting the first protection device 21 and the second protection device 22. The switch-in module 200 may obtain the second alarm information according to the first alarm information. The switch-in module 200 is connected with the second protection device 22, and then the second protection device 22 can receive the second alarm information and send the second alarm information to the monitoring master station 20 of the transformer substation, and a manager of the monitoring master station 20 can timely inform a maintainer to repair the first protection device 21. The second alarm information may be the same or different from the first alarm information. 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, so that the manager can determine that the first protection device 21 is faulty after receiving the second alarm information.
In a specific embodiment, it is assumed that there are 3 protection devices in a substation, protection device A1, protection device A2 and protection device A3, respectively. The distance between the protector A1 and the protector A2 is similar, the distance between the protector A2 and the protector A3 is similar, and the distance between the protector A3 and the protector A1 is similar. And each protection device is provided with a detection module and an opening 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 detection module in the protection device A3. After receiving the alarm information sent by the protection device A1, the monitoring master station 20 can determine that the protection device A3 has a fault; after receiving the alarm information sent by the protection device A2, the monitoring master station 20 can determine that the protection device A1 has a fault; after receiving the alarm information sent by the protection device A3, the monitoring master station 20 can determine that the protection device A2 has failed. And the protection device A1 is similar to the protection device A2, and when the detection module in the protection device A1 is connected with the opening module in the protection device A2 by using a cable, the use of the cable can be saved. Similarly, when the detection module in the protection device A2 and the opening module in the protection device A3 are connected by using a cable, the use of the cable can be saved.
The alarm information transmitting apparatus 10 operates as follows:
during operation of the substation, the detection module 100 in the first protection device 21 sends out the first alarm information when the first protection device 21 fails. The switch-in module 200 in the second protection device 22 is connected with 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 a second alarm message to the monitoring master station 20. The manager timely informs the maintenance personnel to maintain the first protection device 21 according to the second alarm information received by the monitoring master station 20.
The alarm information sending device 10 provided in this embodiment includes a detection module 100 and an entry module 200. The detection module 100 is disposed on the first protection device 21, and is configured to send out a first alarm message when the first protection device 21 fails. The switch-in module 200 is disposed on the second protection device 22 and connected to the detection module 100. The alarm information sending device 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. Thus, the manager can acquire the second alarm information sent by the second protection device 22 through the monitoring master station 20, and then can clearly judge that the first protection device 21 fails according to the preset setting. By using the alarm information sending device 10 provided in this embodiment, a manager can distinguish which protection device has a fault at the monitoring master station 20, so that the manager can be notified of the fault to repair the protection device in time, thereby ensuring the normal operation of the protection device and ensuring the safe operation of the transformer substation.
In one embodiment, the switch-in module 200 includes a photo coupler 210 for acquiring the second alarm information according to the first alarm information. The optocoupler 210 is also called an optoisolator, abbreviated as optocoupler. The photocoupler 210 is a device for transmitting an electric signal by using light as a medium, the photocoupler 210 has a good isolation effect on the input first alarm information and the output second alarm information, and the photocoupler 210 has unidirectionality on the transmission from the first alarm information to the second alarm information. The photoelectric coupler 210 has good electric insulation and anti-interference capability, 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 emitter 211 is connected to the detection module 100, and is configured to emit light according to the first alarm information, so as to obtain alarm light. The light receiver 212 is configured to generate a photocurrent according to the alarm light, so as to obtain second alarm information. In one embodiment, the light emitters 211 are light emitting diodes and the light detectors 212 are light detectors. After the light emitter 211 receives the first alarm information sent by the detection module 100, the first alarm information drives the light emitter 211 to emit light with a certain wavelength, which is denoted as alarm light. After receiving the alarm light, the light receiver 212 generates a photocurrent, and further amplifies the photocurrent to obtain second alarm information. 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 photoelectric coupler 210 is high, so that the obtained second alarm information is more accurate.
In one embodiment, the detection module 100 includes a relay auxiliary contact for sending a first alarm message when the first protection device 21 fails. The relay auxiliary contact means a switching device capable of cutting off a circuit. The auxiliary relay contact is in a normally open state when the first protection device 21 is operating normally. When the first protection device 21 fails, the auxiliary relay contact is closed, and the auxiliary relay contact is turned on, and a current flows or a voltage is applied across the auxiliary relay contact. If the light emitter 211 in the photoelectric coupler 210 is connected in series with the auxiliary contact of the relay, the first alarm information is current information, and the light emitter 211 obtains alarm light according to the current information; if the light emitter 211 in the photocoupler 210 is connected in parallel with the auxiliary contact of the relay, the first alarm information is voltage information, and the light emitter 211 obtains alarm light according to the voltage information. In the present embodiment, the detection module 100 has a simple structure and low cost.
One embodiment of the application provides a protection device arranged in a switch cabinet of a transformer substation. The protection device includes the alarm information transmitting device 10 provided in the above embodiment. That is, the protection device is provided with a detection module 100 and an entry module 200. The protection device also comprises a communication device or a power module and other devices. Since the protection device includes the alarm information transmitting device 10, the protection device has all the structures and advantageous effects of the alarm information transmitting device 10, which are not described herein.
Referring to fig. 3, an embodiment of the present application provides a substation 30 including the alarm information sending device 10, the first protection device 21, the second protection device 22, and the monitoring master station 20 provided in the above embodiment. The detection module 100 is disposed on the first protection device 21. The switch-in module 200 is disposed on the second protection device 22 and is configured to receive the second alarm information. The monitoring master 20 is in communication with a second protection device 22. The second alarm information can be sent to the monitoring master station 20 through the second protection device 22 when the first protection device 21 fails, so that a manager timely informs a maintainer 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 entry module 200, reference may be made to the description of the first protection device 21, the second protection device 22, the detection module 100, and the entry module 200 in the alarm information sending device 10, which are not described herein. Since the substation 30 includes the alarm information transmitting apparatus 10, the substation 30 has all the structures and advantageous effects of the alarm information transmitting apparatus 10, which are not described herein.
In one embodiment, the monitoring master station 20 is connected to the second protection device 22 via a fiber optic ethernet. Fiber optic ethernet refers to accessing or accessing in an SP network using ethernet LAN datagrams over fiber, and the underlying connection may run at any standard ethernet speed. The optical fiber ethernet technology is simple and has a long transmission distance, and at the same time, the data and the requirements of circuit switched applications can be easily handled, so that the communication between the monitoring master station 20 and the second protection device 22 is quicker and more accurate.
Referring to fig. 4, an embodiment of the present application provides a method for transmitting alarm information by using the alarm information transmitting apparatus provided in the above embodiment, including:
s100, when the first protection device fails, the detection module sends out first alarm information.
In this embodiment, the specific descriptions of the first protection device, the detection module, and the first alarm information may refer to the descriptions in the embodiments of the alarm information sending device, which are not described herein again. When the first protection device fails, the first protection device sends a signal to the detection module when detecting that the first protection device fails, and the detection module sends first alarm information according to the signal; or the detection module detects that the first protection device has a fault and then sends first alarm information. The present embodiment is not limited in any way as long as it can realize its function.
S200, the start-in module obtains second alarm information according to the first alarm information.
In this embodiment, the specific descriptions of the switch-in module and the second alarm information may refer to the descriptions in the embodiments of the alarm information sending device, which are not described herein. After receiving the first alarm information sent by the detection module in the first protection device, the opening module in the second protection device converts the first alarm information to obtain 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 switch-in module, which is not limited in this embodiment.
And S300, the second protection device receives the second alarm information and sends the second alarm information 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 second alarm information. The second protection device is in communication connection with the monitoring master station, and can send second alarm information to the monitoring master station through the second protection device, so that a manager can inform a maintainer to maintain the first protection device according to the second alarm information received by the monitoring master station.
In the alarm information sending method provided by the embodiment, when the first protection device fails, the detection module sends out the first alarm information; the opening module in the second protection device can acquire 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. The manager can timely inform maintenance personnel of maintaining the first protection device according to the second alarm information received by the monitoring main station so as to ensure the normal operation of the first protection device, thereby ensuring the safe operation of the transformer substation. In addition, the method for sending the alarm information is implemented by applying the alarm information sending device, so that the party has all the beneficial effects of the alarm information sending device, and the details are not repeated here.
Referring to fig. 5, in one embodiment, the detection module includes a relay auxiliary contact, and when the first protection device fails, step S100 includes the detection module generating first alarm information, including:
s110, if the first protection device fails, the auxiliary relay contact is closed, and the information passing through the auxiliary relay contact is first alarm information.
In this embodiment, the specific description of the auxiliary contact of the relay may refer to the description in the embodiment of the alarm information sending device, which is not described herein. In a specific embodiment, when the first protection device fails, a control signal is sent to control the auxiliary relay contact to close so that the auxiliary relay contact is conducted. The information passing through the auxiliary contact of the relay can be voltage information or current information, and the first alarm information can be voltage information or current information. If the opening module is connected with the auxiliary contact of the relay in parallel, the first alarm information received by the opening module is voltage information; if the switching-in module is connected with the auxiliary contact of the relay in series, the first alarm information received by the switching-in module is current information. In the embodiment, the relay auxiliary contact is used for sending the first alarm information, so that the method is simple and convenient.
With continued reference to fig. 5, in one embodiment, the switch-in module includes a photoelectric coupler, and step S200 of the switch-in module obtains second alarm information according to the first alarm information includes:
s210, the photoelectric coupler obtains alarming light according to the first alarming information;
s220, the photoelectric coupler obtains second alarm information according to the alarm light.
In this embodiment, the specific description of the optical coupler may refer to the description in the embodiment of the alarm information sending device, which is not described herein. The photoelectric coupler can be used for converting the electric signals into optical signals and then into the electric signals, so that the photoelectric coupler can be used for converting the first alarm information into the optical signals at first, namely, the alarm light can be obtained according to the first alarm information; and converting the optical signal into second alarm information, namely, obtaining the second alarm information according to the alarm light. In this embodiment, the photoelectric coupler is used to implement the conversion between the first alarm information and the second alarm information, so that all the beneficial effects of the photoelectric coupler are provided, and the description thereof is omitted.
The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The foregoing examples illustrate only a few embodiments of the application and are described in detail herein without thereby limiting the scope of the application. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application. Accordingly, the scope of protection of the present application is to be determined by the appended claims.
Claims (10)
1. An alarm information sending device applied to at least two protection devices of a transformer substation, comprising:
the detection module is arranged on the first protection device and comprises a relay auxiliary contact for detecting the first protection device, closing the relay auxiliary contact when the first protection device fails, and sending out first alarm information; the first alarm information is information passing through the auxiliary contact of the relay; and
the opening module is arranged on the second protection device and is connected with the detection module, the opening module comprises a photoelectric coupler, the photoelectric coupler is used for obtaining alarm light according to the first alarm information and obtaining second alarm information according to the alarm light, and the second protection device is used for receiving the second alarm information and sending the second alarm information to the monitoring master station.
2. The alert message transmitting apparatus as claimed in claim 1, wherein the photo coupler is configured to obtain the second alert message according to the first alert message.
3. The alert information transmitting apparatus according to claim 2, wherein the photo coupler comprises:
the illuminator is connected with the detection module and is used for emitting light according to the first alarm information to obtain alarm light;
and the light receiver is used for generating photocurrent according to the alarm light rays to obtain the second alarm information.
4. The warning message transmitting apparatus of claim 3 wherein the first warning message is a current message if the light emitter is connected in series with the relay auxiliary contact;
and the illuminator is used for emitting light according to the current information to obtain the alarm light.
5. A protection device for a substation, comprising: the alert information transmitting apparatus according to any one of claims 1 to 4.
6. A substation, comprising:
the alarm information transmitting apparatus according to any one of claims 1 to 4;
the detection module is arranged on the first protection device;
the second protection device is arranged on the opening module and is used for receiving the second alarm information;
and the monitoring master station is in communication connection with the second protection device.
7. The substation of claim 6, wherein the monitoring master station is connected to the second protection device via an optical fiber ethernet.
8. A method of transmitting alarm information using the alarm information transmitting apparatus according to any one of claims 1 to 4, comprising:
when the first protection device has a fault, the detection module sends out the first alarm information;
the start-up module acquires the second alarm information according to the first alarm information;
and the second protection device receives the second alarm information and sends the second alarm information to the monitoring master station.
9. The method of claim 8, wherein the detection module includes a relay auxiliary contact, and wherein the detection module issues the first alarm message when the first protection device fails, comprising:
if the first protection device has a fault, the auxiliary relay contact is closed, and the information passing through the auxiliary relay contact is the first alarm information.
10. The method of claim 9, wherein the switch-in module comprises a photo coupler, the switch-in module obtaining the second alarm information according to the first alarm information, comprising:
the photoelectric coupler obtains alarming light according to the first alarming information;
and the photoelectric coupler obtains the second alarm information according to the alarm light.
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| CN202010886266.6A CN112039015B (en) | 2020-08-28 | 2020-08-28 | Alarm information sending device and method, protection device and transformer substation |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010886266.6A CN112039015B (en) | 2020-08-28 | 2020-08-28 | Alarm information sending device and method, protection device and transformer substation |
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| CN112039015B true CN112039015B (en) | 2023-09-08 |
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| CN106253250A (en) * | 2016-08-23 | 2016-12-21 | 江苏方天电力技术有限公司 | A kind of distributed rapid protection system of intelligent distribution network and guard method |
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| US20030156367A1 (en) * | 2002-02-01 | 2003-08-21 | Macbeth Bruce F. | Arc fault circuit interrupter with upstream impedance detector |
| EP2159893A1 (en) * | 2008-08-29 | 2010-03-03 | ABB Research LTD | Substation automation with redundant protection |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201498975U (en) * | 2009-10-10 | 2010-06-02 | 李晶 | Ultralimit protecting device with self-checking system |
| CN106253250A (en) * | 2016-08-23 | 2016-12-21 | 江苏方天电力技术有限公司 | A kind of distributed rapid protection system of intelligent distribution network and guard method |
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