CN106410964B - Based on substation relay protection device definite value remote operation method - Google Patents
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- CN106410964B CN106410964B CN201610895825.3A CN201610895825A CN106410964B CN 106410964 B CN106410964 B CN 106410964B CN 201610895825 A CN201610895825 A CN 201610895825A CN 106410964 B CN106410964 B CN 106410964B
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- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000003825 pressing Methods 0.000 claims abstract description 15
- 238000013475 authorization Methods 0.000 claims description 28
- 238000012795 verification Methods 0.000 claims description 21
- 238000012986 modification Methods 0.000 claims description 8
- 230000004048 modification Effects 0.000 claims description 8
- 238000007711 solidification Methods 0.000 claims description 8
- 230000008023 solidification Effects 0.000 claims description 8
- 238000012790 confirmation Methods 0.000 claims description 7
- 230000001681 protective effect Effects 0.000 claims description 6
- 230000008859 change Effects 0.000 claims description 3
- 230000009471 action Effects 0.000 claims description 2
- 239000004575 stone Substances 0.000 claims description 2
- 235000013399 edible fruits Nutrition 0.000 claims 1
- 238000001514 detection method Methods 0.000 abstract 1
- 238000004891 communication Methods 0.000 description 5
- 239000002131 composite material Substances 0.000 description 4
- 238000012544 monitoring process Methods 0.000 description 4
- 238000010606 normalization Methods 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012552 review Methods 0.000 description 1
- 230000026676 system process Effects 0.000 description 1
Classifications
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- H02J13/0006—
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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
- H02H7/22—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 for distribution gear, e.g. bus-bar systems; for switching devices
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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
-
- 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
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/16—Electric power substations
-
- 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
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/20—Systems supporting electrical power generation, transmission or distribution using protection elements, arrangements or systems
-
- 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
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S40/128—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment involving the use of Internet protocol
Landscapes
- Emergency Protection Circuit Devices (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The present invention discloses one kind based on substation relay protection device definite value remote operation method, including establishes security certificate system step；Long-range definite value operates amendment step；Long-range definite value area switch step；Execution step is moved back in long-range soft pressing plate throwing；Distant place slot signal step；Wherein, establish security certificate system step specifically include formulate safe Key Infrastructure, operation order encryption and issue, operation order starting executes.Method of the present invention based on substation relay protection device definite value remote operation has the characteristics that operation validity detection and online setting management.
Description
Technical field
The present invention relates to substation relay protection device definite value remote operation fields, and in particular to arrives a kind of substation's relay
Protect equipment definite value remote operation method.
Background technique
Relay protection is the first barrier of power grid security reliability service, and the relay protection constant value management of existing power grid is general
Using off-line mode, while being protection information security, mostly uses the mode for sending someone to scene to carry out definite value switching.This mode is deposited
In following problems: on the one hand, relay protection constant value is configured according to the method for operation of electric system, with the knot of modern power network
Structure is increasingly complicated, and the change of the method for operation needs frequent definite value switching, and this mode modifies definite value and is difficult to meet efficient requirement；
On the other hand, with the development of smart grid, the condition of remote operation is gradually mature, and protective relaying device has branch substantially
It holds distant place modification definite value, switching definite value area, throw the communication interface for moving back the remote operations such as soft pressing plate, slot signal.Therefore online into
The long-range setting management of row is extremely urgent.
Relay protection remote operation the main contents include: (1) definite value be arranged；(2) definite value Operational Zone is changed；(3) distant place is thrown
Move back soft pressing plate；(4) distant place slot signal；(5) the regular automatic Verification of definite value.
Currently, the protective relaying device of each producer has supported these remote operation functions substantially, however due to device
Definite value content involve relatively wide, interactive information needed for remote operation is complicated.And existing protective relaying device itself does not have
Information security detects and defense function, and the communication network information of communication network and substation and dispatching terminal inside substation is pacified
It will affect the reliability of relay protection remote operation entirely, the communication network architecture of substation provides more to enter to information attack
It invades node, attack path, more information stealth links and interprets easiness, it is more stowed positions or stepping-stone, broader
Shoot innerland, deeper into Achilles' heel position, seriously threatened to the safe and stable operation bring of electric system, or even draw
Send out catastrophic failure.
In view of this, the present inventor studies this, it is remote specially to develop a kind of substation relay protection device definite value
Thus journey operating method, this case generate.
Summary of the invention
The object of the present invention is to provide a kind of methods based on substation relay protection device definite value remote operation, realize electricity
The safe and stable operation of Force system.
To achieve the goals above, solution of the invention is:
Based on substation relay protection device definite value remote operation method, include the following steps:
Establish security certificate system step；
Long-range definite value operates amendment step；
Long-range definite value area switch step；
Execution step is moved back in long-range soft pressing plate throwing；
Distant place slot signal step；
Wherein, establish security certificate system step specifically include formulate safe Key Infrastructure, operation order encryption and issue,
Operation order starting executes.
Compared with prior art, the method tool of the present invention based on substation relay protection device definite value remote operation
It has the following advantages:
(1) operation validity detects: authorized legitimate user just can be carried out remote operation, and otherwise the operation will be refused
Absolutely；
(2) online setting management: all definite value operations, including operation order issue and all carry out on-line normalization and management, fixed
Value management is more efficient.
Below in conjunction with drawings and the specific embodiments, the invention will be described in further detail.
Detailed description of the invention
Fig. 1 establishes security certificate system process figure for the present embodiment；
Fig. 2 is that the long-range definite value of the present embodiment operates modification process figure；
Fig. 3 is the long-range definite value area switching flow figure of the present embodiment；
Fig. 4 is that execution flow chart is moved back in the long-range soft pressing plate throwing of the present embodiment；
Fig. 5 is the distant place slot signal flow chart of the present embodiment.
Specific embodiment
Based on substation relay protection device definite value remote operation method, include the following steps:
One, security certificate system step is established, as shown in Figure 1, specifically including:
1, it formulates safe Key Infrastructure: formulating the Key Infrastructure of high degree of safety, Key Infrastructure packet from top to bottom in regulation center
User name containing Telnet, the close operation code of safety, IP address, operating right grade and Information Encryption Algorithm.The encryption
System is arranged by regulation center and is updated according to certain period, after be assigned to active station or device in substation.
2, the encryption of operation order and issue: regulation center encrypts the operation order assigned, under reach monitoring station, operation
It stands, relay protection information safety control；Wherein monitoring station must be appointed as a work station of substation's station level, operation
Station may be selected to be a work station of substation's station level, or the work station at regulation center, relay protection information security control
Device is the device of communication network monitoring in substation, and the IP address of these devices is fixed, and by regulation center in security system
In be encrypted.Regulation center by operation order review code encryption after, under reach monitoring station, active station, relay protection information
Safety control；After these stations and device receive, operation order is decrypted according to specified decryption method, and according to specified
Reinspection algorithm specified compound operation is carried out to the order of operation order, calculate composite result, and return to regulation center.If institute
There is composite result identical with the regulation composite result of center calculation, then shows to assign operation order success, otherwise, then send back to not identical
Composite result, clearly find which network is intercepted and is distorted.
3, operation order starting executes: after determining that operation order is assigned successfully, being controlled safely by active station starting relay protection information
Device processed executes operation order content.When relay protection information safety control receives operation order, operation starting is first checked for
Station, if the active station for belonging to operation order formulation checks whether the station has and signs and issues the life while according to authorization command system
The permission of order, if order system passes through, start-up operation ticket carries out corresponding operation to relay protection.
Two, long-range definite value operates amendment step, as shown in Fig. 2, specifically including:
1. relay protection information safety control first successfully grasps downloading by the authorization command system of its storage
Authorization identity is carried out as ticket, the certification such as order legitimacy if authentification failure, there is going beyond one's commission or surpassing the act of authorization, belongs to
Fraud then needs to send alarm to main website, and otherwise certification passes through.
2. relay protection information safety control calls relay protection currently to run the fixed value information in definite value area, behaviour is checked
Make the definite value of ticket, if verification is wrong, the definite value of operation order or relay protection be possible to behaviour distort or protective device upload
It is wrong, then upload warning information.
3. the currently running definite value of relay protection to the caching of the fixed value modification issued to relay protection, is called in substation again
It is verified, definite value group is if appropriate for current operation.Solidification order is just generated if verification is correct, is by operation fixed value modification
Definite value is run, finally by definite value handover event writing events log, switching is sent to main website and completes confirmation message, otherwise, if
Definite value is not suitable for current operating conditions, and substation alarm simultaneously sends definite value handover failure reason code to main website, illustrates that main website exists and usurp
Change operation area code or destroys the threat of substation's normal operating condition.
Three, long-range definite value area switch step, as shown in figure 3, specifically including:
1. relay protection information safety control first successfully grasps downloading by the authorization command system of its storage
Authorization identity is carried out as ticket, the certification such as order legitimacy if authentification failure, there is going beyond one's commission or surpassing the act of authorization, belongs to
Fraud then needs to send alarm to main website, and otherwise certification is by uploading current Operational Zone definite value area code.
2. relay protection information safety control calls protection all definite value areas information, the definite value area of operation order is checked
Number, if verification is wrong, the definite value area of operation order or relay protection be possible to behaviour distort or protective device upload it is wrong, then
Upload warning information.
3. substation, which carries out definite value area code to the definite value area code issued, which carries out verification, whether there is, whether definite value area definite value group is fitted
Close current operation.Solidification order is just generated if verification is correct, and operation area code is revised as target area code, finally cuts definite value
Event writing events log is changed, switching is sent to main website and completes confirmation message, otherwise, if definite value area code is not present or definite value
District's groups value is not suitable for current operating conditions.Substation alarm simultaneously sends definite value handover failure reason code to main website, illustrates that main website exists
It distorts operation area code or destroys the threat of substation's normal operating condition.
Four, execution step is moved back in long-range soft pressing plate throwing, as shown in figure 4, specifically including:
1, substation telemechanical apparatus carries out authentication by authorization identity card table in inquiry database, if authentification failure,
So there may be going beyond one's commission or surpassing the behavior authorized, substation alerts and notifies main website, otherwise authenticates by entering telemechanical for main website
Device control point ID checks the stage.
2, due in telemechanical apparatus there are telemechanical remote controlled point table and local remote controlled point table, can be inside telemechanical apparatus
It checks the telemechanical remote controlled point table saved to the control point ID issued and our station and whether local remote controlled point table matches correctly.If distant
Control point ID is not present, then may be main website issue control point ID write it is wrong or in the presence of distorted in luminous cable, substation at this time
It alerts and error reason code is sent into main website.If checked successfully, enters and call verification stage again.
3, whether the control point ID and soft pressing plate control device ID for calling verification to refer to that telemechanical issues again are identical, if sent
Value is mismatched with soft pressing plate controller ID number, then substation alerts, and there are messages to distort threat inside substation at this time.If verification
Correctly, then it executes soft pressing plate throwing and moves back order, transmitted by the detailed writing events log of this action event and to main website.
Five, distant place slot signal step, as shown in figure 5, specifically including:
1, relay protection information safety control first successfully grasps downloading by the authorization command system of its storage
Authorization identity, the certification such as order legitimacy are carried out as ticket.If authentification failure, exists and go beyond one's commission or surpass the act of authorization, belong to
Fraud then needs to send alarm to main website, and otherwise certification passes through up-delivering signal relay signal state value.
2, main website records fault signal type, assigns signal return order, substation relay protection information safety control
Whether verifying effective information unit is distorted, if distorting substation alarm, assigns signal after Resolving probiems with broadcast mode
Relay involution solidification order.
3, signal relay executes signal return order, by involution event writing events log, sends involution life to main website
It enables executing and completes confirmation message.
Method based on substation relay protection device definite value remote operation described in the present embodiment has the advantages that
(1) operation validity detects: authorized legitimate user just can be carried out remote operation, and otherwise the operation will be refused
Absolutely；
(2) online setting management: all definite value operations, including operation order issue and all carry out on-line normalization and management, fixed
Value management is more efficient.
Above-described embodiment and schema and non-limiting product form and style of the invention, any technical field it is common
The appropriate changes or modifications that technical staff does it all should be regarded as not departing from patent category of the invention.
Claims (5)
1. being based on substation relay protection device definite value remote operation method, it is characterised in that include the following steps:
It establishes security certificate system step: starting including formulating the encryption of safe Key Infrastructure, operation order and issuing with operation order
It executes；
Long-range definite value operates amendment step: being ordered first by the authorization of its storage including 1) relay protection information safety control
System is enabled to carry out authorization identity, the certification of order legitimacy to successful operation order is downloaded；2) relay protection information security control fills
The fixed value information for calling relay protection currently to run definite value area is set, the definite value of operation order is checked；3) definite value issued is repaired in substation
Change the caching to relay protection, call the currently running definite value of relay protection to be verified again: verification correctly then generates solidification
Operation fixed value modification is the operation definite value issued by order；
Long-range definite value area switch step: pass through the authorization command of its storage first including 1) relay protection information safety control
To downloading, successful operation order carries out authorization identity to system, order legitimacy authenticates；2) relay protection information safety control
Protection all definite value areas information is called, the definite value area code of operation order is checked；3) substation, which carries out verification to the definite value area code issued, is
No presence, definite value area definite value group just generate solidification order if appropriate for current operation if verification is correct, operation area code are repaired
It is changed to target area code；
Execution step is moved back in long-range soft pressing plate throwing: being carried out including 1) substation telemechanical apparatus by authorization identity card table in inquiry database
Authentication；2) the telemechanical remote controlled point table and be locally remotely controlled that the control point ID issued and our station save are checked inside telemechanical apparatus
Whether point table matches correctly；3) again calling verification refer to control point ID that telemechanical issues and soft pressing plate control device ID whether phase
Together；
Distant place slot signal step: pass through the authorization command body of its storage first including 1) relay protection information safety control
To downloading, successful operation order carries out authorization identity, order legitimacy authenticates for system；2) main website records fault signal type, assigns letter
Whether number involution order, substation relay protection information safety control verifying effective information unit are distorted；3) signal after
Electric appliance executes signal return order, by involution event writing events log, sends involution order to main website and executes completion confirmation report
Text.
2. being based on substation relay protection device definite value remote operation method as described in claim 1, it is characterised in that long-range
Definite value operation amendment step specifically includes:
1) relay protection information safety control is first by the authorization command system of its storage to the successful operation order of downloading
Authorization identity is carried out, the certification of order legitimacy, there is going beyond one's commission or surpassing the act of authorization, belongs to fraud row if authentification failure
To send and alerting to main website, otherwise certification passes through；
2) relay protection information safety control calls relay protection currently to run the fixed value information in definite value area, checks operation order
Definite value upload warning information if verification is wrong；
3) substation calls the currently running definite value of relay protection to carry out the caching of the fixed value modification issued to relay protection again
Verification: verification correctly then generates solidification order, is the operation definite value issued by operation fixed value modification, finally by definite value handover event
Writing events log sends switching to main website and completes confirmation message, and otherwise, substation alarm simultaneously sends definite value handover failure to main website
Reason code.
3. being based on substation relay protection device definite value remote operation method as described in claim 1, it is characterised in that long-range
Definite value area switch step specifically includes:
1) relay protection information safety control is first by the authorization command system of its storage to the successful operation order of downloading
Authorization identity, the certification of order legitimacy are carried out, if authentification failure, there is going beyond one's commission or surpassing the act of authorization, belongs to fraud row
To send and alerting to main website, otherwise certification is by uploading current Operational Zone definite value area code；
2) relay protection information safety control calls protection all definite value areas information, checks the definite value area code of operation order, such as
Fruit stone is to wrong, then the definite value area of operation order or relay protection is possible to be distorted or protective device uploads wrong, above conveys
Alert information；
3) substation, which carries out verification to the definite value area code issued, whether there is, and definite value area definite value group is run if appropriate for current, if
Verification is correct then just to generate solidification order, operation area code is revised as target area code, finally by definite value handover event writing events
Log sends switching to main website and completes confirmation message, otherwise, if definite value area code is not present or definite value district's groups value is not suitable for working as
Preceding operating status, substation alarm simultaneously send definite value handover failure reason code to main website.
4. being based on substation relay protection device definite value remote operation method as described in claim 1, it is characterised in that described
Long-range soft pressing plate throwing is moved back execution step and is specifically included:
1) substation telemechanical apparatus carries out authentication, if authentification failure, substation by authorization identity card table in inquiry database
Alert and notify main website, certification checks the stage by then entering telemechanical apparatus control point ID；
2) the telemechanical remote controlled point table and local remote controlled point table that the control point ID issued and our station save are checked inside telemechanical apparatus
Whether match correctly, if remote controlled point ID is not present, error reason code is simultaneously sent main website by substation alarm, if checked successfully,
Then enter and calls verification stage again；
3) calling verification refers to whether control point ID that telemechanical issues and soft pressing plate control device ID identical again, if sending value with
Soft pressing plate controller ID number mismatches, then substation alerts, and there are messages to distort threat inside substation at this time, if verification is just
Really, then it executes soft pressing plate throwing and moves back order, transmitted by the detailed writing events log of this action event and to main website.
5. being based on substation relay protection device definite value remote operation method as described in claim 1, it is characterised in that described
Distant place slot signal step specifically includes:
1) relay protection information safety control is first by the authorization command system of its storage to the successful operation order of downloading
Authorization identity, the certification of order legitimacy are carried out, if authentification failure, in the presence of going beyond one's commission or surpassing the act of authorization, belongs to fraud row
To send and alerting to main website, otherwise certification passes through up-delivering signal relay signal state value；
2) main website records fault signal type, assigns signal return order, the verifying of substation relay protection information safety control
Whether effective information unit is distorted, if distorting substation alarm, assigns signal relay after Resolving probiems with broadcast mode
Device involution solidification order；
3) signal relay executes signal return order, by involution event writing events log, sends involution order to main website and holds
Row completes confirmation message.
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107658984B (en) * | 2017-10-10 | 2020-09-25 | 广东电网有限责任公司电力调度控制中心 | Remote decoupling and setting method for main backup protection fixed value |
| CN109193587B (en) * | 2018-10-12 | 2020-02-04 | 南京南瑞继保电气有限公司 | Transformer substation local distributed protection system and remote operation method |
| CN109842208B (en) * | 2018-12-26 | 2023-01-20 | 广东电网有限责任公司 | Anti-error method and device for remote issuing of fixed value list of safety automatic device |
| CN109494880B (en) * | 2018-12-27 | 2021-10-22 | 国网浙江省电力有限公司电力科学研究院 | In-situ bus protection station control layer information management implementation method |
| CN109993405A (en) * | 2019-02-28 | 2019-07-09 | 国网浙江省电力有限公司绍兴供电公司 | A kind of relay protection remote operation closed loop control operation order model and assign method |
| CN110350660B (en) * | 2019-07-12 | 2021-02-05 | 国电南瑞科技股份有限公司 | Online monitoring method and system for relay protection function pressing plate |
| CN111668820A (en) * | 2020-06-24 | 2020-09-15 | 中国南方电网有限责任公司 | Relay protection constant value remote configuration method |
| CN112104078A (en) * | 2020-09-09 | 2020-12-18 | 国网河南省电力公司技能培训中心 | Remote control authorization terminal with redundancy function for power system |
| CN113470210A (en) * | 2021-06-30 | 2021-10-01 | 广东电网有限责任公司 | Fixed value rapid inspection method and system of safety automatic device and storage medium |
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| JPH10322888A (en) * | 1997-05-15 | 1998-12-04 | Hitachi Ltd | Method and system for locating ground fault on power line |
| CN105186690A (en) * | 2015-09-02 | 2015-12-23 | 南京南瑞继保电气有限公司 | Remote operation method for constant value of relay protection device |
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