CN108092249A - Network domain protection method and device - Google Patents
Network domain protection method and device Download PDFInfo
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- CN108092249A CN108092249A CN201711447153.0A CN201711447153A CN108092249A CN 108092249 A CN108092249 A CN 108092249A CN 201711447153 A CN201711447153 A CN 201711447153A CN 108092249 A CN108092249 A CN 108092249A
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- 238000000034 method Methods 0.000 title claims abstract description 24
- 230000009471 action Effects 0.000 claims abstract description 83
- 238000009826 distribution Methods 0.000 claims abstract description 38
- 238000001514 detection method Methods 0.000 claims abstract description 16
- 239000013307 optical fiber Substances 0.000 claims description 8
- 230000000875 corresponding effect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 13
- 238000004590 computer program Methods 0.000 description 7
- 230000006870 function Effects 0.000 description 6
- 238000005259 measurement Methods 0.000 description 6
- 238000005520 cutting process Methods 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
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- 241000272814 Anser sp. Species 0.000 description 1
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- 238000005516 engineering process Methods 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
- H02H7/28—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured for meshed systems
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
- H02H7/261—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured involving signal transmission between at least two stations
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- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The invention provides a network domain protection method and a device, wherein the method comprises the following steps: collecting a detection signal of the power distribution network; wherein the detection signal comprises: current/voltage signals of each node, circuit breaker position signals, isolating switch position signals and element protection action signals; determining the tide data of each node according to the collected current/voltage signals; and executing corresponding actions according to the power flow data, the circuit breaker position signal, the disconnecting switch position signal and the protection action signal of the element. The invention can identify the network structure, judge the fault element, quickly cut off the fault network element, and quickly cut off the adjacent network element after the main protection of the end element refuses, the protection action is quick and accurate, and the range of avoiding accidents is enlarged.
Description
Technical Field
The invention relates to the power technology, in particular to a network domain protection method and a network domain protection device.
Background
The power grid (110kV, 220kV) of a regional or large and medium-sized enterprise is generally provided with 1 or more central substations, 1-2 power supply lines of each central substation are connected with a public power grid, and the central substations are used as cores to supply power to terminal substations of the regional (or enterprise) in a radial or ring network mode. Self-contained generator sets (or residual energy generator sets) in the power grid are connected to the power grid at a central substation, the power distribution networks are relatively independent, and the distribution range is generally small (within 10 km).
As shown in fig. 1, which is a diagram of a typical power distribution network structure, in the power distribution network shown in fig. 1, the constituent elements of the system are mainly classified into two types, namely: network elements, end elements. The network element refers to a distribution element of a central substation or an element (such as an incoming line of a ring network station and a bus connection loop) which can be connected with a power supply at both ends of a ring network station; the end element is an element having one end connected to a power supply and the other end connected to a step-down transformer device.
In the traditional protection configuration, the protection devices of all elements are independent from each other and are not uniformly coordinated with each other in real time. The protection of the protection devices of the network elements and the terminal elements need to be matched, the matching relation is complex, and the action time is long; especially when the main protection of the terminal element is refused or the breaker fails, the accident range is easy to expand due to the overlong action time of the backup protection; directly threatens the stable operation of local networks and generator sets.
Disclosure of Invention
The method and the device can quickly and accurately identify the fault network element of the power grid, quickly cut off the adjacent network element and quickly and accurately provide protection actions. The embodiment of the invention provides a network domain protection method, which comprises the following steps:
collecting a detection signal of the power distribution network; wherein the detection signal comprises: current/voltage signals of each node, circuit breaker position signals, isolating switch position signals and element protection action signals;
determining the tide data of each node according to the collected current/voltage signals;
and executing protection action according to the power flow data, the collected circuit breaker position signal, the isolating switch position signal and the element protection action signal.
In an embodiment of the present invention, the executing a protection action according to the power flow data, the collected circuit breaker position signal, the disconnecting switch position signal, and the protection action signal of the element includes:
determining a real-time network structure of the power distribution network according to the power flow data, the collected circuit breaker position signals and the isolating switch position signals;
and controlling a circuit breaker in the power grid to execute protection actions according to the determined real-time network structure of the power distribution network and the protection action information of the elements.
In the embodiment of the present invention, the controlling, according to the determined real-time network structure of the power distribution network and the protection action information of the element, a circuit breaker in the power distribution network to execute a protection action includes:
determining adjacent elements of each element in the power grid according to the determined real-time network structure of the power distribution network;
and controlling the circuit breakers of the protection action element and the adjacent element to execute the protection action according to the protection action information of each element.
In the embodiment of the invention, the method comprises the following steps:
and acquiring the detection signal of the power distribution network by using an intelligent electronic device IED and executing a protection action.
Meanwhile, the invention also provides a network domain protection device, which comprises: the intelligent electronic equipment IED and the central main protection device are arranged at each node in the power grid; wherein,
the intelligent electronic device IED is used for acquiring detection signals of the power distribution network; wherein the detection signal comprises: current/voltage signals of each node, circuit breaker position signals, isolating switch position signals and element protection action signals;
the central main protection device is used for determining the power flow data of each node according to the collected current/voltage signals, generating a control command according to the power flow data, the collected circuit breaker position signals, the collected disconnecting switch position signals and the protection action signals of the elements, and controlling the intelligent electronic device IED to execute protection actions.
In the embodiment of the present invention, the central main protection device includes:
the network structure determining module is used for determining the real-time network structure of the power distribution network according to the power flow data, the collected circuit breaker position signals and the isolating switch position signals;
and the instruction generating module is used for controlling the circuit breakers of the protection action element and the adjacent element thereof to execute the protection action according to the protection action information of each element.
In the embodiment of the present invention, the network structure determining module includes:
the adjacent element determining unit is used for determining adjacent elements of all elements in the power grid according to the determined real-time network structure of the power distribution network;
and the instruction generating module generates a control instruction according to the determined adjacent elements of the elements and the protection action information of the elements.
In the embodiment of the invention, the intelligent electronic equipment IED is connected to the central main protection device through an optical fiber.
The invention sets a set of network domain protection method and device based on the system structure to complete the network structure identification, fault element judgment, rapid fault network element cutting, and rapid adjacent network element cutting after the main protection of the end element refuses, the protection action is rapid and accurate, and the accident range is prevented from expanding.
In order to make the aforementioned and other objects, features and advantages of the invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a diagram of a typical prior art power distribution network architecture;
fig. 2 is a flowchart of a network domain protection method provided in the present invention;
fig. 3 is a block diagram of a network domain protection device provided in the present invention;
fig. 4 is a schematic diagram of a network domain protection device according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
An embodiment of the present invention provides a network domain protection method, as shown in fig. 2, including:
step S101, collecting detection signals of a power distribution network; wherein the detection signal comprises: current/voltage signals of each node, circuit breaker position signals, isolating switch position signals and element protection action signals;
step S102, determining the tide data of each node according to the collected current/voltage signals;
and step S103, executing protection action according to the power flow data, the collected circuit breaker position signal, the isolating switch position signal and the element protection action signal.
In the embodiment of the present invention, in step S103, executing a protection action according to the power flow data, the collected circuit breaker position signal, the disconnecting switch position signal, and the protection action signal of the element includes:
determining a real-time network structure of the power distribution network according to the power flow data, the collected circuit breaker position signals and the isolating switch position signals;
and controlling a circuit breaker in the power grid to execute protection actions according to the determined real-time network structure of the power distribution network and the protection action information of the elements.
In the embodiment of the present invention, the controlling, according to the determined real-time network structure of the power distribution network and the protection action information of the element, a circuit breaker in the power distribution network to execute a protection action includes:
determining adjacent elements of each element in the power grid according to the determined real-time network structure of the power distribution network;
and controlling the circuit breakers of the protection action element and the adjacent element to execute the protection action according to the protection action information of each element.
The method realizes different protection actions aiming at the network element and the terminal element in the power grid, and quickly removes the fault element for the network element; for both the network element and the end element, the adjacent element breaker with the delay controlled protective action element performs the failure protection action.
Meanwhile, the present invention also provides a network domain protection device, as shown in fig. 3, including: intelligent electronic equipment IED301 and a central main protection device 302 which are arranged at each node in a power grid; wherein,
the intelligent electronic device IED301 is used for collecting detection signals of the power distribution network; wherein the detection signal comprises: current/voltage signals of each node, circuit breaker position signals, isolating switch position signals and element protection action signals;
and the central main protection device 302 is configured to determine power flow data of each node according to the collected current/voltage signals, generate a control instruction according to the power flow data, the collected circuit breaker position signals, the collected disconnector position signals, and protection action signals of the elements, and control the intelligent electronic device IED to perform a protection action.
In the embodiment of the present invention, the central main protection device includes:
the network structure determining module is used for determining the real-time network structure of the power distribution network according to the power flow data, the collected circuit breaker position signals and the isolating switch position signals;
and the instruction generating module is used for generating a control instruction according to the determined real-time network structure of the power distribution network and the protection action information of the elements.
In the embodiment of the present invention, the network structure determining module includes:
the adjacent element determining unit is used for determining adjacent elements of all elements in the power grid according to the determined real-time network structure of the power distribution network;
and the instruction generating module generates a control instruction according to the determined adjacent elements of the elements and the protection action information of the elements.
In the embodiment of the present invention, the intelligent electronic device IED301 is connected to the central main protection device 302 through an optical fiber.
The following will explain the technical scheme of the present invention in detail by combining specific embodiments:
in the embodiment of the invention, a network domain protection device based on a system structure is arranged in a power distribution network to finish the network structure identification, the fault element judgment, the rapid failure network element cutting-off and the rapid removal of the adjacent network elements after the main protection of the end element is refused, so that the protection action is rapid and accurate, and the range of accidents is prevented from being enlarged.
The domain protection device based on the system architecture of this embodiment is composed of an intelligent measurement/execution element (IED) and a central master protection device (MSP), in this embodiment, the domain protection device is composed of an IED and an MSP based on an IEC61850 protocol, and a typical domain protection device system based on the system architecture is composed, and fig. 4 is a schematic diagram of the protection device disclosed in this embodiment.
In the embodiment of the invention, the functions of each component element are as follows:
1) intelligent measurement/execution element IED:
collecting current/voltage quantity of a loop, a position signal of a circuit breaker, a position signal of an isolating switch and action signals of protection of the loop and adjacent terminal elements;
and executing the tripping outlet instruction of the loop.
2) A central main protection device MSP:
receiving collected data of an intelligent measurement/execution element (IED);
judging the network structure of the system operation, and determining the power supply adjacent elements of each element.
And judging the fault state of the system, and determining the fault point and the fault type of the network element and the end element.
For the network element, the fault element is quickly cut off, and judgment before backup (failure) protection action is carried out.
The terminal elements (such as BT1, BT2, CT1, CT2, DG1, etc.) are judged to be in a protection failure state according to the protection action signals.
Under the condition that the element protection device and the circuit breaker are out of order, outputting an instruction to trip off the adjacent circuit breaker of the fault element;
3) optical fiber network:
and intelligent measurement/execution elements (IEDs) in the central substation and network elements between the central substation and the ring network stations are connected with a main processor (MSP) arranged in the central substation by adopting optical fibers to complete communication between the central main station and the ring network stations, and a communication protocol adopts an IEC61850 SV or GOOSE format. The optical fiber network is distributed in the range of less than 10km, the existing mature equipment can meet the requirements, and the optical fiber network has high reliability and low manufacturing cost.
In the embodiment of the invention, a central master protection device (MSP) and an optical fiber network adopt double-set redundancy configuration.
In this embodiment, the functions performed by the domain protection device include: the method comprises the steps of judging the network structure of system operation, determining the fault point and the fault type, rapidly cutting off the fault of the network element, and performing backup (failure) protection on the network element and the end element.
1) Judging the network structure of system operation:
in this embodiment, the central master protection device (MSP) determines the real-time network structure according to the position signals of the circuit breaker and the disconnector collected by the intelligent measurement/execution device (IED), and with the assistance of the system load flow and the direction thereof calculated by the collected current/voltage quantities.
According to the real-time network structure, the power supply side adjacent elements of each element are determined (as shown in fig. 4, the adjacent elements of the element B5 are B2 and B3, and the adjacent elements of the element A7 are A1, A2, A3 and A4/A5), and when the backup (failure) protection action of the element is performed, the circuit breakers are quickly and accurately tripped. The rapidity and the accuracy of the backup (failure) protection action are guaranteed, and the power failure range of the action is minimum.
2) Determination of fault point and fault type:
the method comprises the steps that a central main protection device (MSP) calculates the power flow direction and magnitude of each collection point by using current/voltage quantity collected by an intelligent measurement/execution element (IED), and the position and the fault type of a fault point are judged by combining collected protection action information of a terminal element through the power flow data difference value of an upstream collection point and a downstream collection point.
3) Fault removal of network elements:
and the central main protection device (MSP) determines adjacent network elements of the fault point according to the determined fault point position, rapidly cuts off the fault and starts the backup (failure) protection of the elements.
4) Backup (failure) protection of network elements and end elements:
and judging the protection refusal of the network element and the end element according to the judgment results of the fault point and the fault type, the action signal of the network element and the collected protection action information of the end element, and delaying the action of the adjacent element of the fault element according to the real-time system network structure to remove the fault element within the minimum expanded range.
The network domain protection device based on the system structure has the advantages that:
the device adopts a double-set redundancy mode, utilizes mature hardware product integration, and ensures the reliability of the device.
The multi-node information collected by the network domain protection device is integrated, so that fault points and fault types are easy to judge; the backup (failure) protection action range is accurately pre-judged in real time, so that the influence range of an accident is minimum; the sensitivity is high.
The protection actions of all nodes of the network element are coordinated uniformly, mutual locking is realized in the device, and the network element is updated in real time along with the change of the operation mode of the system, so that the selectivity of multi-node protection coordination is solved.
The action time is short, the action of the main protection of the whole network is guaranteed within 0.1s, the backup protection (or failure protection) acts within 0.1-0.3 s, the matching time between the protection of different elements is saved, and the quick action of the action is guaranteed.
Faults are accurately and quickly removed, the loss of the faults is controlled to be minimum, and stable operation of a system and a generator set is facilitated.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
The principle and the implementation mode of the invention are explained by applying specific embodiments in the invention, and the description of the embodiments is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (8)
1. A network domain protection method, the method comprising:
collecting a detection signal of the power distribution network; wherein the detection signal comprises: current/voltage signals of each node, circuit breaker position signals, isolating switch position signals and element protection action signals;
determining the tide data of each node according to the collected current/voltage signals;
and executing protection action according to the power flow data, the collected circuit breaker position signal, the isolating switch position signal and the element protection action signal.
2. The method for network domain protection according to claim 1, wherein said performing a protection action based on the power flow data, the breaker position signal, the disconnector position signal, and the protection action signal of the component comprises:
determining a real-time network structure of the power distribution network according to the power flow data, the collected circuit breaker position signals and the isolating switch position signals;
and controlling a circuit breaker in the power grid to execute protection actions according to the determined real-time network structure of the power distribution network and the protection action information of the elements.
3. The method for protecting a network domain according to claim 2, wherein the controlling a breaker in the power grid to perform a protection action according to the determined real-time network structure and the protection action information of the elements of the power distribution network comprises:
determining adjacent elements of each element in the power grid according to the determined real-time network structure of the power distribution network;
and controlling the circuit breakers of the protection action element and the adjacent element to execute the protection action according to the protection action information of each element.
4. A method for network domain protection according to claim 1 or 3, wherein said method comprises:
and acquiring the detection signal of the power distribution network by using an intelligent electronic device IED and executing a protection action.
5. A network domain protection device, comprising: the intelligent electronic equipment IED and the central main protection device are arranged at each node in the power grid; wherein,
the intelligent electronic device IED is used for acquiring detection signals of the power distribution network; wherein the detection signal comprises: current/voltage signals of each node, circuit breaker position signals, isolating switch position signals and element protection action signals;
the central main protection device is used for determining the power flow data of each node according to the collected current/voltage signals, generating a control command according to the power flow data, the collected circuit breaker position signals, the collected disconnecting switch position signals and the protection action signals of the elements, and controlling the intelligent electronic device IED to execute protection actions.
6. The network domain protection device of claim 5, wherein said central master protection device comprises:
the network structure determining module is used for determining the real-time network structure of the power distribution network according to the power flow data, the collected circuit breaker position signals and the isolating switch position signals;
and the instruction generating module is used for generating a control instruction according to the determined real-time network structure of the power distribution network and the protection action information of the elements.
7. The network domain protection device of claim 6, wherein said network structure determining module comprises:
the adjacent element determining unit is used for determining adjacent elements of all elements in the power grid according to the determined real-time network structure of the power distribution network;
and the instruction generating module controls the circuit breakers of the protection action element and the adjacent element to execute the protection action according to the protection action information of each element.
8. The network domain protection device of claim 5, wherein the intelligent electronic equipment IED is connected to the central primary protection device by an optical fiber.
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| CN201711447153.0A CN108092249A (en) | 2017-12-27 | 2017-12-27 | Network domain protection method and device |
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| CN201711447153.0A CN108092249A (en) | 2017-12-27 | 2017-12-27 | Network domain protection method and device |
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| CN108092249A true CN108092249A (en) | 2018-05-29 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113013846A (en) * | 2019-12-20 | 2021-06-22 | 国网上海市电力公司 | Intelligent substation relay protection equipment network deployment structure |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2806280A1 (en) * | 2013-05-21 | 2014-11-26 | ABB Research Ltd. | Detecting electrical islands using wide-area measurements |
| CN105226832A (en) * | 2015-11-06 | 2016-01-06 | 国网山东莒县供电公司 | A kind of relay protecting method |
| CN106385016A (en) * | 2016-11-09 | 2017-02-08 | 南京工程学院 | Power distribution network protection system based on limited wide area protection principle and power distribution network protection method thereof |
| US20170117975A1 (en) * | 2012-06-04 | 2017-04-27 | At&T Intellectual Property I, L.P. | Detection and mitigation of ingress interference within communication links |
| CN107394897A (en) * | 2017-08-21 | 2017-11-24 | 国网山东省电力公司济南供电公司 | A kind of power distribution network intelligence self-healing method and system based on topological diagram |
-
2017
- 2017-12-27 CN CN201711447153.0A patent/CN108092249A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20170117975A1 (en) * | 2012-06-04 | 2017-04-27 | At&T Intellectual Property I, L.P. | Detection and mitigation of ingress interference within communication links |
| EP2806280A1 (en) * | 2013-05-21 | 2014-11-26 | ABB Research Ltd. | Detecting electrical islands using wide-area measurements |
| CN105226832A (en) * | 2015-11-06 | 2016-01-06 | 国网山东莒县供电公司 | A kind of relay protecting method |
| CN106385016A (en) * | 2016-11-09 | 2017-02-08 | 南京工程学院 | Power distribution network protection system based on limited wide area protection principle and power distribution network protection method thereof |
| CN107394897A (en) * | 2017-08-21 | 2017-11-24 | 国网山东省电力公司济南供电公司 | A kind of power distribution network intelligence self-healing method and system based on topological diagram |
Non-Patent Citations (1)
| Title |
|---|
| 吴颖欣: ""智能配电网集中式保护"", 《2013年中国电机工程学会年会论文集》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113013846A (en) * | 2019-12-20 | 2021-06-22 | 国网上海市电力公司 | Intelligent substation relay protection equipment network deployment structure |
| CN113013846B (en) * | 2019-12-20 | 2024-02-02 | 国网上海市电力公司 | Intelligent substation relay protection equipment networking structure |
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Application publication date: 20180529 |