CN109246215B - Method and terminal for acquiring fault data of relay in power system - Google Patents
Method and terminal for acquiring fault data of relay in power system Download PDFInfo
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- CN109246215B CN109246215B CN201811052916.6A CN201811052916A CN109246215B CN 109246215 B CN109246215 B CN 109246215B CN 201811052916 A CN201811052916 A CN 201811052916A CN 109246215 B CN109246215 B CN 109246215B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
- H04L67/125—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks involving control of end-device applications over a network
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Abstract
The invention relates to a method and a terminal for acquiring fault data of a relay in a power system, wherein the method comprises the following steps: a terminal for acquiring fault data of a relay in a power system receives an acquisition instruction input by a user, wherein the acquisition instruction comprises an identifier of at least one target relay; the terminal sends a transmission instruction to the target relay according to the identifier, the transmission instruction is used for triggering the target relay to send fault data stored by the target relay through a target PDI, and the target relay and the terminal are located in different substations in the power system; and the terminal receives the fault data.
Description
Technical Field
The invention relates to the field of power systems, in particular to a method and a terminal for acquiring fault data of a relay in a power system.
Background
Electric power is the foundation of national economy and is an important industry of the pillars, and therefore, electric power systems must be safe and reliable. The power system generally comprises a generator, a transformer, a bus, a power line and electric equipment. The electrical components and systems are normally in normal operation, but may also be in a fault or abnormal operation.
As the scale of the power system becomes larger and larger, the structure becomes more and more complex, and the occurrence of a fault is inevitable. When a fault occurs in the power system, relays in each substation in the power system store fault data. If a section of power line breaks down, a worker needs to acquire fault data stored in relays in substations at two ends of the power line, and can analyze the fault through the fault data so as to facilitate subsequent maintenance. In the prior art, a worker needs to connect a physical device to each substation to acquire fault data in each relay. Because each transformer substation is wide in distribution range, the distance between two transformer substations is 3-100km generally, great inconvenience is brought to workers, and a large amount of manpower and material resources are wasted.
Disclosure of Invention
In view of the above, the present invention provides a method and a terminal for transmitting fault data of a relay in a relay protection device.
One aspect of the present invention provides a method for obtaining fault data of a relay in an electrical power system, comprising:
a terminal for acquiring fault data of a relay in a power system receives an acquisition instruction input by a user, wherein the acquisition instruction comprises an identifier of at least one target relay;
the terminal sends a transmission instruction to the target relay according to the identifier, the transmission instruction is used for triggering the target relay to send fault data stored by the target relay through a target PDI, and the target relay and the terminal are located in different substations in the power system;
and the terminal receives the fault data.
According to the embodiment, a user can send a transmission instruction to the target relay through one terminal so as to trigger the target relay to send fault data to the terminal through the existing target PDI, and therefore the user can obtain the fault data without moving to a transformer substation where the target relay is located, a large amount of time is saved, and excessive cost cannot be increased.
According to the method as described above, optionally, the sending, by the terminal, the transmission instruction to the target relay according to the identifier includes:
the terminal sends the transmission instruction to the target relay through a source PDI of a source relay so that the target relay sends the fault data to the source PDI, and the terminal is used for being connected with the source relay;
the receiving, by the terminal, the fault data includes:
the terminal receives the failure data through the source PDI.
According to the invention, the source PDI of the source relay realizes the transmission of the target PDI fault data of the target relay, and the terminal can acquire the required fault data through the source relay, so that the fault data in the relay with a longer distance can be acquired, the existing hardware is utilized, and the cost is prevented from being increased as much as possible.
According to the method as described above, optionally, before the terminal receives the acquisition instruction input by the user, the method further includes:
the terminal receives a trigger instruction;
and the terminal displays an interface according to the trigger instruction, wherein the interface comprises a window for inputting the identification of the target relay.
The identification of the target relay is input through the interface, so that great convenience is brought to a user.
According to the method as described above, optionally, before the terminal receives the acquisition instruction input by the user, the method further includes: and the terminal receives the position information of each relay of the power line where the fault is located so that a user can select the source relay according to the position information. In this way, the user is greatly facilitated.
Another aspect of the present invention provides a terminal for acquiring fault data of a relay in an electric power system, including:
the acquisition module is used for receiving an acquisition instruction input by a user, wherein the acquisition instruction comprises an identifier of at least one target relay;
a sending module, configured to send a transmission instruction to the target relay according to the identifier, where the transmission instruction is used to trigger the target relay to send fault data stored by the target relay through a target PDI, and the target relay and the terminal are located in different substations in the power system;
a first receiving module for receiving said fault data.
According to the embodiment, a user can send a transmission instruction to the target relay through one terminal so as to trigger the target relay to send fault data to the terminal through the existing target PDI, and therefore the user can obtain the fault data without moving to a transformer substation where the target relay is located, a large amount of time is saved, and excessive cost cannot be increased.
According to the terminal as described above, optionally, the sending module is specifically configured to: transmitting the transmission instruction to the target relay through a source PDI of a source relay so that the target relay transmits the fault data to the source PDI, wherein the transmitting module is used for being connected with the source substation;
the first receiving module is specifically configured to: the fault data is received by a PDI of the source relay.
According to the invention, the transmission of the target PDI fault data of the target relay is realized through the source PDI, and then the terminal can acquire the required fault data through the source relay, so that not only can the fault data in the relay with a longer distance be acquired, but also the cost is prevented from being increased as much as possible by utilizing the existing hardware.
The terminal as described above optionally further includes:
a second receiving module, for receiving the triggering instruction;
and the display module is used for displaying an interface according to the trigger instruction, and the interface comprises a window for inputting the identification of the target relay.
The identification of the target relay is input through the interface, so that great convenience is brought to a user.
The terminal as described above optionally further includes: and the third receiving module is used for receiving the position information of each relay of the power line where the fault exists so that a user can select the source relay according to the position information. In this way, the user is greatly facilitated.
Yet another aspect of the present invention provides a terminal for acquiring fault data of a relay in an electric power system, comprising:
the input device is used for inputting an acquisition instruction by a user, wherein the acquisition instruction comprises an identifier of at least one target relay;
at least one communication interface for connecting with a source relay to receive or transmit data;
at least one memory connected to the communication interface for storing the received fault data;
at least one processor configured to perform a method for obtaining fault data of a relay in an electrical power system as described in any one of the above.
Yet another aspect of the present invention provides a terminal for acquiring fault data of a relay in an electric power system, comprising:
at least one memory for storing instructions;
at least one processor configured to execute a method for acquiring fault data of a relay in a power system according to any one of the above in accordance with instructions stored in the memory.
Yet another aspect of the invention provides a readable storage medium having stored therein machine readable instructions which, when executed by a machine, perform a method for acquiring fault data for a power system relay according to any of the above.
Drawings
The foregoing and other features and advantages of the invention will become more apparent to those skilled in the art to which the invention relates upon consideration of the following detailed description of a preferred embodiment of the invention with reference to the accompanying drawings, in which:
fig. 1 is a flowchart illustrating a method for acquiring fault data of a relay in a power system according to an embodiment of the present invention.
Fig. 2 is a flowchart illustrating a method for acquiring fault data of a relay in a power system according to another embodiment of the present invention.
Fig. 3 is a flowchart illustrating a method for acquiring fault data of a relay in a power system according to another embodiment of the present invention.
Fig. 4 is a schematic structural diagram of a terminal for acquiring fault data of a relay in a power system according to an embodiment of the present invention.
Fig. 5 is a schematic structural diagram of a terminal for acquiring fault data of a relay in a power system according to another embodiment of the present invention.
Fig. 6 is a schematic structural diagram of a terminal for acquiring fault data of a relay in a power system according to still another embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail by referring to the following examples.
Example one
The present embodiments provide a method for acquiring fault data of a relay in a power system. The main executing body of the method is a terminal for acquiring fault data of the relay in the power system, and the terminal can be various terminals for users to operate, such as a palm computer, a personal computer and the like, and is not described herein again.
Fig. 1 is a schematic flow chart of a method for acquiring fault data of a relay in a power system according to the present invention. The method for acquiring the fault data of the relay in the power system comprises the following steps:
The user can input the acquisition instruction through the interface of the terminal to trigger the subsequent flow. The identification of the target relay is input through the interface, so that great convenience is brought to a user. The identifier of the target relay may be manually input by a user, for example, after the identifier of the target relay is input in the interface, the sending button is clicked, so that an obtaining instruction may be generated, and the terminal further sends the obtaining instruction.
For example, the terminal first receives a trigger instruction input by a user, and then displays an interface according to the trigger instruction, where the interface includes a window for inputting an identifier of a target relay, and the user may input the identifier of the target relay where fault data desired to be acquired is located in the window. The user can determine the target relay according to the information of each relay acquired in advance, and also can determine the target relay according to the alarm information received when the fault occurs, and the method is not limited specifically.
Of course, the acquisition command may also include the identifiers of the plurality of target relays.
And 102, the terminal sends a transmission instruction to the target relay according to the identifier, the transmission instruction is used for triggering the target relay to send fault data stored by the target relay through one target PDI, and the target relay and the terminal are located in different substations in the power system.
PDI (Protection Date Interface) is an existing communication Interface in a relay. In the prior art, a relay transmits real-time detection data through the PDI. Real-time detection data can be transmitted among different relays through respective PDIs. In this embodiment, after the target relay acquires the fault data, the fault data is stored. In this embodiment, after receiving the transmission instruction, the target relay transmits the stored fault data through its own target PDI, so that the existing hardware structure of the relay is not changed, and the cost is not increased too much.
In this embodiment, that the target relay and the terminal are located in different substations means that the target relay and the terminal are located at different positions, for example, the target relay is located in one target substation, the terminal is located in one source substation, a power line between the target substation and the source substation has a fault, and the target substation and the source substation may be adjacent substations.
And step 103, the terminal receives the fault data.
The terminal may receive the failure data through a source relay, or may receive the failure data through connecting to an existing communication channel of the target PDI, where the connection may be a wired connection or a wireless connection, and details thereof are not repeated.
According to the embodiment, a user can send a transmission instruction to the target relay through one terminal so as to trigger the target relay to send fault data to the terminal through the existing target PDI, and therefore the user can obtain the fault data without moving to a transformer substation where the target relay is located, a large amount of time is saved, and excessive cost cannot be increased.
Example two
This embodiment further supplements the method for transmitting fault data of a relay in a relay protection device in the first embodiment.
Fig. 2 is a schematic flow chart of a method for transmitting fault data of a relay in a relay protection device according to this embodiment. The method comprises the following steps:
This step is identical to step 101 and will not be described herein.
The source relay and the terminal can be in physical wired connection or wireless connection, and can be set according to actual requirements. Of course, the source relay and the terminal may be directly connected or indirectly connected. The source relay is located in a source substation. The terminal may send the transmission instruction to the target PDI on the target relay through the source PDI on the source relay. There is inherently a communication channel between the source PDI and the target PDI that allows direct communication.
It is noted that the "source" and "target" in the present invention are for distinguishing between different substations or relays.
In step 203, the terminal receives failure data through the source PDI.
When the source relay acquires the fault data stored in the target relay through the source PDI, the fault data can be sent to a terminal connected with the source relay. After receiving the fault data, the terminal can store the fault data in a preset path so as to be convenient for a user to view the fault data. Of course, the progress of the transmission can also be displayed on the screen of the terminal during the transmission process, so that the user can know the transmission condition.
Optionally, before step 201, the method further includes: and the terminal receives the position information of each relay of the power line where the fault is located so that a user can select a source relay according to the position information. For example, when a relay recognizes that a power line protected by the relay is out of order, its position information may be transmitted to a terminal so that a user can know where the power line is out of order. The user can determine the source relay and the target relay through the corresponding relation between the mark and the position information of each relay, which is obtained in advance, and great convenience is brought to the user.
According to the invention, the source PDI of the source relay realizes the transmission of the target PDI fault data of the target relay, and the terminal can acquire the required fault data through the source relay, so that the fault data in the relay with a longer distance can be acquired, the existing hardware is utilized, and the cost is prevented from being increased as much as possible.
EXAMPLE III
The present embodiment specifically exemplifies the method for acquiring fault data of the relay in the power system in the foregoing embodiment.
As shown in fig. 3, three substations A, B and C in the same power system. There is one relay in each substation, and each relay has a PDI.
When the power line between A and B is in failure, A and B will send out alarm. For example, an alarm message is sent to the preset device 301, and the user can know that the line between a and B is faulty according to the alarm message. Optionally, the alarm information includes position information of a and position information of B, that is, position information of an a relay and a B relay. The user selects a relay closer to himself as a source relay, for example, the relay 303 in B, based on the position information.
After the user arrives at B, the terminal 302 is physically connected to the relay 303. Next, the user may send a trigger instruction to cause the terminal 302 to display an interface, input the identification information of the relay 304 in the a through the interface displayed by the terminal 302, and send an acquisition instruction. The relay 303 transmits the acquisition instruction to the PDI of the a relay 304 through its own PDI according to the acquisition instruction. After receiving the acquisition instruction, the relay 304 transmits the fault data stored therein to the relay 303 through its PDI. After receiving the fault data, the relay 303 may send the fault data to the terminal 302 in the conventional manner. The user can acquire the failure data in a through the terminal 302.
Of course, the terminal 302 also needs to obtain the fault data of the relay 303, and the specific implementation manner is as the prior art.
If the power line between B and C is also failed, the alarm information includes A, B and C position information. If the user selects B as the source substation, that is, selects the relay 303 as the source relay, the generated acquisition instruction may include the identifier of the relay 304 and the identifier of the relay C at the same time, so that the fault information stored in the respective relays in a and C may be acquired at the same time.
Example four
The embodiment provides a terminal for acquiring fault data of a relay in a power system, and is used for executing the method of the first embodiment.
Fig. 4 is a schematic structural diagram of a terminal for acquiring fault data of a relay in an electric power system according to the present embodiment. The terminal 400 comprises an acquisition module 401, a sending module 402 and a first receiving module 403.
The obtaining module 401 is configured to receive an obtaining instruction input by a user, where the obtaining instruction includes an identifier of at least one target relay; the sending module 402 is configured to send a transmission instruction to the target relay according to the identifier, where the transmission instruction is used to trigger the target relay to send fault data stored by the target relay through one target PDI, and the target relay and the terminal are located in different substations in the power system; the first receiving module 403 is used for receiving fault data.
Optionally, the sending module 402 is specifically configured to: transmitting a transmission instruction to a target relay through a source PDI of a source relay so that the target relay transmits fault data to the source PDI, wherein the transmitting module 402 is configured to connect with the source relay; the first receiving module 403 is specifically configured to: failure data is received by the source PDI.
The fault data acquired by the first receiving module 403 may be stored in a memory.
The operation method of each module is the same as the method described above, and is not described herein again.
According to the embodiment, a user can send a transmission instruction to the target relay through one terminal so as to trigger the target relay to send fault data to the terminal through the existing target PDI, and therefore the user can obtain the fault data without moving to a target transformer substation where the target relay is located, a large amount of time is saved, and excessive cost is not increased.
EXAMPLE five
This embodiment provides a supplementary explanation of the terminal according to the fourth embodiment.
Fig. 5 is a schematic structural diagram of a terminal for acquiring fault data of a relay in an electric power system according to the present embodiment. The terminal 500 includes a second receiving module 501 and a display module 502 in addition to the acquiring module 401, the sending module 402 and the first receiving module 403 shown in fig. 4.
The second receiving module 501 is configured to receive a trigger instruction; the display module 502 is connected to the second receiving module 501, and is configured to display an interface according to the trigger instruction, where the interface includes a window for inputting an identifier of the target relay.
Optionally, the terminal of this embodiment further includes a third receiving module 503, where the third receiving module 503 receives the position information of each relay of the power line where the fault exists, so that the user selects the source relay according to the position information. The received position information of each relay may be stored in a memory.
The operation method of each module is the same as the method described above, and is not described herein again.
According to the invention, the source PDI of the source relay realizes the transmission of the target PDI fault data of the target relay, and the terminal can acquire the required fault data through the source relay, so that the fault data in the relay with a longer distance can be acquired, the existing hardware is utilized, and the cost is prevented from being increased as much as possible.
EXAMPLE six
The present embodiment provides a terminal for acquiring fault data of a relay in an electric power system, which is used for executing the method for acquiring fault data of a relay in an electric power system of the foregoing embodiment.
Fig. 6 is a schematic structural diagram of a terminal for acquiring fault data of a relay in an electric power system according to the present embodiment. The terminal 600 comprises an input means 601, at least one communication interface 602, at least one memory 603 and at least one display 604.
Wherein, a user inputs an acquisition instruction through the input device 601, and the acquisition instruction comprises an identifier of at least one target relay; the communication interface 602 is used for connecting with a source relay to receive or transmit data; the memory 603 is connected to the communication interface 602, and is configured to store the received fault data; the display screen 604 is used to perform the method for acquiring fault data of relays in the power system according to any of the foregoing embodiments.
The input device 601 of this embodiment may be a display screen, a keyboard, or a combination of the two, which may be specifically selected according to actual needs. Alternatively, there may be two communication interfaces 601, one of which may be used to connect with a source substation to receive or transmit data. The received data is, for example, failure data or position information of each relay, and the transmitted data is, for example, an acquisition instruction. The memory 602 may store position information of each substation in the power system in advance. The processor 603 may perform the method for acquiring fault data of relays in the power system in any of the embodiments described above.
According to the embodiment, a user can send a transmission instruction to a target relay serving as a target through one terminal so as to trigger the target relay to send fault data to the terminal through the existing target PDI, and therefore the user can obtain the fault data without moving to a transformer substation where the target relay is located, a large amount of time is saved, and excessive cost is not increased.
The invention also provides a terminal for acquiring fault data of the relay in the power system, which comprises at least one memory and at least one processor. Wherein the memory is to store instructions. The processor is configured to execute the method for acquiring fault data of the relay in the power system described in any of the foregoing embodiments according to instructions stored in the memory.
Embodiments of the present invention also provide a readable storage medium. The readable storage medium has stored therein machine readable instructions which, when executed by a machine, the machine performs the method for acquiring fault data of a relay in a power system as described in any of the preceding embodiments.
The readable medium has stored thereon machine readable instructions which, when executed by a processor, cause the processor to perform any of the methods previously described. In particular, a system or apparatus may be provided which is provided with a readable storage medium on which software program code implementing the functionality of any of the embodiments described above is stored and which causes a computer or processor of the system or apparatus to read and execute machine-readable instructions stored in the readable storage medium.
In this case, the program code itself read from the readable medium can realize the functions of any of the above-described embodiments, and thus the machine-readable code and the readable storage medium storing the machine-readable code form part of the present invention.
Examples of the readable storage medium include floppy disks, hard disks, magneto-optical disks, optical disks (e.g., CD-ROMs, CD-R, CD-RWs, DVD-ROMs, DVD-RAMs, DVD-RWs, DVD + RWs), magnetic tapes, nonvolatile memory cards, and ROMs. Alternatively, the program code may be downloaded from a server computer or from the cloud via a communications network.
It will be understood by those skilled in the art that various changes and modifications may be made in the above-disclosed embodiments without departing from the spirit of the invention. Accordingly, the scope of the invention should be determined from the following claims.
It should be noted that not all steps and units in the above flows and system structure diagrams are necessary, and some steps or units may be omitted according to actual needs. The execution order of the steps is not fixed and can be adjusted as required. The apparatus structures described in the above embodiments may be physical structures or logical structures, that is, some units may be implemented by the same physical entity, or some units may be implemented by a plurality of physical entities, or some units may be implemented by some components in a plurality of independent devices.
In the above embodiments, the hardware unit may be implemented mechanically or electrically. For example, a hardware unit or processor may comprise permanently dedicated circuitry or logic (such as a dedicated processor, FPGA or ASIC) to perform the corresponding operations. The hardware units or processors may also include programmable logic or circuitry (e.g., a general purpose processor or other programmable processor) that may be temporarily configured by software to perform the corresponding operations. The specific implementation (mechanical, or dedicated permanent, or temporarily set) may be determined based on cost and time considerations.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (9)
1. A method for obtaining fault data for a relay in an electrical power system, comprising:
a terminal for acquiring fault data of a relay in a power system receives an acquisition instruction input by a user, wherein the acquisition instruction comprises an identifier of at least one target relay;
the terminal sends a transmission instruction to the target relay according to the identifier, the transmission instruction is used for triggering the target relay to send fault data stored by the target relay through a target PDI, and the target relay and the terminal are located in different substations in the power system;
the terminal receives the fault data;
the terminal sends a transmission instruction to the target relay according to the identifier comprises the following steps: the terminal sends the transmission instruction to the target relay through a source PDI of a source relay so that the target relay sends the fault data to the source PDI, and the terminal is used for being connected with the source relay;
the receiving, by the terminal, the fault data includes:
the terminal receives the failure data through the source PDI.
2. The method according to claim 1, before the terminal receives the acquisition instruction input by the user, further comprising:
the terminal receives a trigger instruction;
and the terminal displays an interface according to the trigger instruction, wherein the interface comprises a window for inputting the identification of the target relay.
3. The method according to claim 1, before the terminal receives the acquisition instruction input by the user, further comprising:
and the terminal receives the position information of each relay of the power line where the fault is located so that a user can select the source relay according to the position information.
4. A terminal for obtaining fault data of a relay in a power system, comprising:
the acquisition module is used for receiving an acquisition instruction input by a user, wherein the acquisition instruction comprises an identifier of at least one target relay;
a sending module, configured to send a transmission instruction to the target relay according to the identifier, where the transmission instruction is used to trigger the target relay to send fault data stored by the target relay through a target PDI, and the target relay and the terminal are located in different substations in the power system;
a first receiving module for receiving said fault data;
the sending module is specifically configured to: sending the transmission instruction to the target relay through a source PDI of a source relay so that the target relay sends the fault data to the source PDI, wherein the sending module is used for being connected with the source relay;
the first receiving module is specifically configured to: receiving the failure data by the source PDI.
5. The terminal of claim 4, further comprising:
a second receiving module, for receiving the triggering instruction;
and the display module is used for displaying an interface according to the trigger instruction, and the interface comprises a window for inputting the identification of the target relay.
6. The terminal of claim 4, further comprising:
and the third receiving module is used for receiving the position information of each relay of the power line where the fault exists so that a user can select the source relay according to the position information.
7. A terminal for obtaining fault data of a relay in a power system, comprising:
the input device is used for inputting an acquisition instruction by a user, wherein the acquisition instruction comprises an identifier of at least one target relay;
at least one communication interface for connecting with a source relay to receive or transmit data;
at least one memory connected to the communication interface for storing the received fault data;
at least one processor configured to perform the method for obtaining fault data of a relay in an electrical power system of any of claims 1-3.
8. A terminal for obtaining fault data of a relay in a power system, comprising:
at least one memory for storing instructions;
at least one processor for executing the method for obtaining fault data of a relay in an electrical power system according to any one of claims 1-3 in accordance with instructions stored by the memory.
9. Readable storage medium having stored therein machine readable instructions which, when executed by a machine, perform the method for obtaining fault data of a power system relay according to any of claims 1-3.
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| CN201811052916.6A CN109246215B (en) | 2018-09-10 | 2018-09-10 | Method and terminal for acquiring fault data of relay in power system |
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