CN110247323A - A kind of one secondary device state of intelligent substation corresponds to judgment method - Google Patents
A kind of one secondary device state of intelligent substation corresponds to judgment method Download PDFInfo
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- CN110247323A CN110247323A CN201910328881.2A CN201910328881A CN110247323A CN 110247323 A CN110247323 A CN 110247323A CN 201910328881 A CN201910328881 A CN 201910328881A CN 110247323 A CN110247323 A CN 110247323A
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- 238000000034 method Methods 0.000 title claims abstract description 24
- 238000012423 maintenance Methods 0.000 claims abstract description 17
- 230000011664 signaling Effects 0.000 claims abstract description 11
- 230000008447 perception Effects 0.000 claims abstract description 7
- 238000005204 segregation Methods 0.000 claims description 10
- 230000006870 function Effects 0.000 claims description 9
- 230000001681 protective effect Effects 0.000 claims description 6
- 230000009466 transformation Effects 0.000 claims description 4
- 238000007689 inspection Methods 0.000 description 4
- 230000005856 abnormality Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000009993 protective function Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B3/00—Apparatus specially adapted for the manufacture, assembly, or maintenance of boards or switchgear
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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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- H02J13/0017—
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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
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Power Engineering (AREA)
- Supply And Distribution Of Alternating Current (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The invention discloses a kind of one secondary device states of intelligent substation to correspond to judgment method, includes the following steps: step S1, for the main electrical scheme topology of substation, divides several interval types, the method for operation of substation can be completely described after all types of combinations；Step S2 perceives the state of a secondary device according to substation's remote signalling, telemetering amount and network message information；Step S3 establishes the corresponding relationship of each interval type primary equipment and secondary device state；Step S4 compares the corresponding relationship that step S3 is established according to a secondary device state of perception.The present invention can quickly prepare to judge whether one secondary device state of intelligent substation accurately corresponds to, when one secondary device state of appearance is unsatisfactory for state corresponding relationship, O&M service personnel can be informed immediately, operation caused by reducing due to equipment state is incorrect and maintenance risk, compensate for the limitation of manual patrol.
Description
Technical field
The invention belongs to electric system power transformation O&M service technique fields, and in particular to one secondary device shape of intelligent substation
State corresponds to judgment method.
Background technique
In recent years, accident caused by a lot of not correctly investments due to running equipment defencive function has occurred in the country, such as
Ningxia power 330kV clear water river in 2013 becomes no-voltage of entire station, the Yongdeng Gansu Power Grid 330kV in 2014 becomes no-voltage of entire station, 2018
The Peng Lai Zhoushan Of Zhejiang Province 220kV becomes the accidents such as no-voltage of entire station, is to cause the same level to be protected because protection pressing plate does not correctly put into or exits
Protective function locking, failure must rely on upper level protection excision, to expand accident impact range.
Any force device must not be run in the state of unprotect, but can only be maked an inspection tour at present by power transformation operation maintenance personnel,
To ensure relay protection and automatic safety device (referred to as " protect and pacify from device ") correct investment.When electric power apparatus examination, fortune
The function of capable protection and peace from the device switching repair apparatus should exit, to guarantee the safety of service personnel.Manual patrol is deposited
In significant limitation, it is related with the professional qualities of tour personnel and working condition to make an inspection tour quality, and is difficult at the first time
It was found that this hidden danger.Therefore, horizontal in order to promote electric power netting safe running, one secondary device condition monitoring system of power grid need to be developed,
According to the state and secondary device state of main equipment of power grid, judges current protection and pacify from whether the state of device meets one
The requirement of secondary device state notes abnormalities and alerts immediately.
Summary of the invention
The technical problem to be solved by the invention is to provide a kind of corresponding judgements of one secondary device state of intelligent substation
Method can quickly prepare to judge whether one secondary device state of intelligent substation accurately corresponds to, and find transformer equipment operation as early as possible
Or security risk when maintenance.
In order to solve the above technical problems, the present invention adopts the following technical scheme: a kind of one secondary device shape of intelligent substation
State corresponds to judgment method, includes the following steps:
Step S1 divides several interval types, can completely describe after all types of combinations for the main electrical scheme topology of substation
The method of operation of substation；
Step S2 perceives the state of a secondary device according to substation's remote signalling, telemetering amount and network message information；
Step S3 establishes the corresponding relationship of each interval type primary equipment and secondary device state；
Step S4 compares the corresponding relationship that step S3 is established, when actual perceived according to a secondary device state of perception
State corresponding relationship and the corresponding relationship of foundation there are it is inconsistent when, then remind O&M service personnel to carry out into one by alerting
Step checks.
Optionally, the interval type that 110kV internal cavity quality divides includes main transformer interval, 110kV inlet wire and bridge switch group
It closes that interval, the monospace 10kV, two main transformer low-pressure sides switch and 10kV mother stock switch combination interval, is respectively spaced corresponding secondary set
Back-up is not:
1) main transformer interval covers the operating status of main transformer and three sides switch, and corresponding secondary device state is main transformer protection
State；
2) 110kV inlet wire and bridge switch interblock gap state correspond to 110kV prepared auto restart state；
3) state corresponding secondary device state in the monospace 10kV is this interval protective device state；
4) two main transformer low-pressure side switches and 10kV mother stock switch combination space state correspond to 10kV prepared auto restart state.
Optionally, the state aware amount of a secondary device includes:
1) primary equipment switch, disconnecting link remote signalling position；
2) primary equipment voltage, telemetering of current amount；
3) it protects and pacifies from device state itself, if having alarm or locking, if throw maintenance；
4) it protects and pacifies from apparatus function pressing plate and output clamping state；
5) combining unit and intelligent end device itself state, if having alarm or locking, if throw maintenance；
6) it protects and pacifies and alert or interrupt with the presence or absence of network link between device, combining unit and intelligent terminal；
7) intelligent terminal exports hard pressing plate state.
Optionally, 220kV double bus scheme divide interval type include main transformer interval, mother interval, line segregation,
The monospace 35kV, two main transformer low-pressure side switches and 35kV mother stock switch combination interval, are respectively spaced corresponding secondary device difference
It is:
1) main transformer interval covers the operating status of main transformer and three sides switch, and corresponding secondary device state is main transformer protection
State and corresponding side bus differential protection state；
2) mother interval is divided into 220kV mother and 110kV mother interval, and mother's difference of corresponding respective relevant voltage grade is protected
Shield；
3) line segregation is divided into 220kV route and 110kV line segregation, corresponding respective route protection and relevant voltage etc.
The bus differential protection of grade；
4) state corresponding secondary device state in the monospace 35kV is this interval protective device state；
5) two main transformer low-pressure side switches and 35kV mother stock switch combination space state correspond to 35kV prepared auto restart state.
Optionally, the state aware amount of a secondary device includes:
1) primary equipment switch, disconnecting link remote signalling position；
2) primary equipment voltage, telemetering of current amount；
3) it protects and pacifies from device state itself, if having alarm or locking, if throw maintenance；
4) it protects and pacifies from apparatus function pressing plate and output clamping state；
5) combining unit and intelligent end device itself state, if having alarm or locking, if throw maintenance；
6) it protects and pacifies and alert or interrupt with the presence or absence of network link between device, combining unit and intelligent terminal；
7) intelligent terminal exports hard pressing plate state.
Optionally, when step S3 basic principle is that primary equipment is in operation or hot stand-by duty, corresponding secondary device
It should be at tripped condition；When primary equipment is in cold standby or inspecting state, corresponding secondary device should be signal condition, should
The soft pressing plate of other run switch of secondary device shunt tripping should exit.
The present invention can quickly prepare to judge whether one secondary device state of intelligent substation accurately corresponds to, and occur one or two times
When equipment state is unsatisfactory for state corresponding relationship, O&M service personnel can be informed immediately, and reduction is made because equipment state is incorrect
At operation and maintenance risk, compensate for the limitation of manual patrol.
The specific technical solution of the present invention and its advantages will in the following detailed description in conjunction with attached drawing into
Row detailed description.
Detailed description of the invention
Present invention will be further described below with reference to the accompanying drawings and specific embodiments:
Fig. 1 is the 110kV bus arrangement figure of internal cavity quality；
Fig. 2 is the system architecture diagram that one secondary device state of substation corresponds to judgment method realization.
Specific embodiment
Embodiment one
A kind of one secondary device state of 110kV substation corresponds to judgment method, chooses the 110kV power transformation of internal cavity quality
It stands, as shown in Figure 1, corresponding to judgment method to establish a secondary device state, includes the following steps:
Step 1: being directed to 110kV internal cavity quality substation, be divided into main transformer interval, 110kV inlet wire and bridge switch combination
Interval, the monospace 10kV, two main transformer low-pressure side switches and 10kV mother stock switch combination interval, are respectively spaced corresponding secondary device
It is respectively:
1) main transformer interval covers the operating status of main transformer and three sides switch, and corresponding secondary device state is main transformer protection
State；
2) 110kV inlet wire and bridge switch interblock gap state correspond to 110kV prepared auto restart state；
3) state corresponding secondary device state in the monospace 10kV is this interval protective device state；
4) two main transformer low-pressure side switches and 10kV mother stock switch combination space state correspond to 10kV prepared auto restart state
Step 2: according to substation's remote signalling, telemetering amount and network message information, perceiving the state of a secondary device, perception
Measuring to include:
1) primary equipment switch, disconnecting link remote signalling position；
2) primary equipment voltage, telemetering of current amount；
3) it protects and pacifies from device state itself, if having alarm or locking, if throw maintenance；
4) it protects and pacifies from apparatus function pressing plate and output clamping state；
5) combining unit and intelligent end device itself state, if having alarm or locking, if throw maintenance；
6) it protects and pacifies and alert or interrupt with the presence or absence of network link between device, combining unit and intelligent terminal；
7) intelligent terminal exports hard pressing plate state.
Step 3: establishing the corresponding relationship of each interval type primary equipment and secondary device state, basic principle is
When primary equipment is in operation or hot stand-by duty, corresponding secondary device should be at tripped condition；Primary equipment is in cold standby
Or when inspecting state, corresponding secondary device should be signal condition, the soft pressing plate of other run switch of the secondary device shunt tripping
It should exit.Specific corresponding relationship is as shown in the table:
1) main transformer interval (by taking #1 main transformer as an example)
2) 110kV inlet wire and bridge switch interblock gap
3) monospace 10kV
| It is spaced the method for operation | The electrical secondary system method of operation | Remarks |
| #10kV switch is in operation or hot stand-by duty | Tripping | |
| #10kV switch is in maintenance or cold standby state | Signal |
4) two main transformer low-pressure side switches and 10kV mother stock switch combination interval
Step 4: according to a secondary device state of perception, the corresponding relationship that step 3 is established is compared, when the shape of actual perceived
State corresponding relationship and the corresponding relationship of foundation there are it is inconsistent when, then reminded by backstage alarm O&M service personnel carry out into
One step inspection, whole system input/output relation are as shown in Figure 2.
Embodiment two
A kind of one secondary device state of 220kV substation corresponds to judgment method, chooses by the modular design wiring of state's net
(tri- voltage class of total 220kV, 110kV and 35kV, 220kV and 110kV are used using double female wiring, 35kV for 220kV substation
Single mother partition wiring, totally two main transformers, are that 3 circles become), mono- secondary device state of Lai Jianli corresponds to judgment method, including as follows
Step:
Step 1: being directed to 220kV substation, be divided into main transformer interval, mother interval, line segregation, the monospace 35kV, two
Platform main transformer low-pressure side switch and 35kV mother stock switch combination interval, being respectively spaced corresponding secondary device is respectively:
6) main transformer interval covers the operating status of main transformer and three sides switch, and corresponding secondary device state is main transformer protection
State and corresponding side bus differential protection state；
7) mother interval is divided into 220kV mother and 110kV mother interval, and mother's difference of corresponding respective relevant voltage grade is protected
Shield；
8) line segregation is divided into 220kV route and 110kV line segregation, corresponding respective route protection and relevant voltage etc.
The bus differential protection of grade；
9) state corresponding secondary device state in the monospace 35kV is this interval protective device state；
10) two main transformer low-pressure side switches and 35kV mother stock switch combination space state correspond to 35kV prepared auto restart state
Step 2: according to substation's remote signalling, telemetering amount and network message information, perceiving the state of a secondary device, perception
Measuring to include:
1) primary equipment switch, disconnecting link remote signalling position；
2) primary equipment voltage, telemetering of current amount；
3) it protects and pacifies from device state itself, if having alarm or locking, if throw maintenance；
4) it protects and pacifies from apparatus function pressing plate and output clamping state；
5) combining unit and intelligent end device itself state, if having alarm or locking, if throw maintenance；
6) it protects and pacifies and alert or interrupt with the presence or absence of network link between device, combining unit and intelligent terminal；
7) intelligent terminal exports hard pressing plate state.
Step 3: establishing the corresponding relationship of each interval type primary equipment and secondary device state, basic principle is
When primary equipment is in operation or hot stand-by duty, corresponding secondary device should be at tripped condition；Primary equipment is in cold standby
Or when inspecting state, corresponding secondary device should be signal condition, the soft pressing plate of other run switch of the secondary device shunt tripping
It should exit.Specific corresponding relationship is as shown in the table:
1) main transformer interval
2) mother interval
3) line segregation
4) monospace 35kV
5) two main transformer low-pressure side switches and 35kV mother stock switch combination interval
Step 4: according to a secondary device state of perception, the corresponding relationship that step 3 is established is compared, when the shape of actual perceived
State corresponding relationship and the corresponding relationship of foundation there are it is inconsistent when, then reminded by backstage alarm O&M service personnel carry out into
One step inspection, whole system input/output relation are as shown in Figure 2.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, is familiar with
The those skilled in the art should be understood that the present invention includes but is not limited to content described in specific embodiment above.It is any
Modification without departing from function and structure principle of the invention is intended to be included in the range of claims.
Claims (6)
1. a kind of one secondary device state of intelligent substation corresponds to judgment method, it is characterised in that include the following steps:
Step S1 divides several interval types, power transformation can be completely described after all types of combinations for the main electrical scheme topology of substation
The method of operation stood；
Step S2 perceives the state of a secondary device according to substation's remote signalling, telemetering amount and network message information；
Step S3 establishes the corresponding relationship of each interval type primary equipment and secondary device state；
Step S4 compares the corresponding relationship that step S3 is established, when the state of actual perceived according to a secondary device state of perception
Corresponding relationship and the corresponding relationship of foundation there are it is inconsistent when, then remind O&M service personnel further to be examined by alerting
It looks into.
2. one secondary device state of a kind of intelligent substation according to claim 1 corresponds to judgment method, it is characterised in that:
The interval type that 110kV internal cavity quality divides includes main transformer interval, 110kV inlet wire and bridge switch interblock gap, the separate room 10kV
Every, two main transformer low-pressure sides switch and 10kV mother stock switch combination interval, being respectively spaced corresponding secondary device is respectively:
1) main transformer interval covers the operating status of main transformer and three sides switch, and corresponding secondary device state is main transformer protection shape
State；
2) 110kV inlet wire and bridge switch interblock gap state correspond to 110kV prepared auto restart state；
3) state corresponding secondary device state in the monospace 10kV is this interval protective device state；
4) two main transformer low-pressure side switches and 10kV mother stock switch combination space state correspond to 10kV prepared auto restart state.
3. one secondary device state of a kind of intelligent substation according to claim 2 corresponds to judgment method, it is characterised in that:
The state aware amount of one secondary device includes:
1) primary equipment switch, disconnecting link remote signalling position；
2) primary equipment voltage, telemetering of current amount；
3) it protects and pacifies from device state itself, if having alarm or locking, if throw maintenance；
4) it protects and pacifies from apparatus function pressing plate and output clamping state；
5) combining unit and intelligent end device itself state, if having alarm or locking, if throw maintenance；
6) it protects and pacifies and alert or interrupt with the presence or absence of network link between device, combining unit and intelligent terminal；
7) intelligent terminal exports hard pressing plate state.
4. one secondary device state of a kind of intelligent substation according to claim 1 corresponds to judgment method, it is characterised in that:
The interval type that 220kV double bus scheme divides includes main transformer interval, mother interval, line segregation, the monospace 35kV, two masters
Low pressure side switch and 35kV mother stock switch combination interval, being respectively spaced corresponding secondary device is respectively:
1) main transformer interval covers the operating status of main transformer and three sides switch, and corresponding secondary device state is main transformer guard mode
And corresponding side bus differential protection state；
2) mother interval is divided into 220kV mother and 110kV mother interval, the bus differential protection of corresponding respective relevant voltage grade；
3) line segregation is divided into 220kV route and 110kV line segregation, corresponding respective route protection and relevant voltage grade
Bus differential protection；
4) state corresponding secondary device state in the monospace 35kV is this interval protective device state；
5) two main transformer low-pressure side switches and 35kV mother stock switch combination space state correspond to 35kV prepared auto restart state.
5. one secondary device state of a kind of intelligent substation according to claim 4 corresponds to judgment method, it is characterised in that:
The state aware amount of one secondary device includes:
1) primary equipment switch, disconnecting link remote signalling position；
2) primary equipment voltage, telemetering of current amount；
3) it protects and pacifies from device state itself, if having alarm or locking, if throw maintenance；
4) it protects and pacifies from apparatus function pressing plate and output clamping state；
5) combining unit and intelligent end device itself state, if having alarm or locking, if throw maintenance；
6) it protects and pacifies and alert or interrupt with the presence or absence of network link between device, combining unit and intelligent terminal；
7) intelligent terminal exports hard pressing plate state.
6. a kind of corresponding judgement side of one secondary device state of intelligent substation as claimed in any of claims 1 to 5
Method, it is characterised in that: when step S3 basic principle is that primary equipment is in operation or hot stand-by duty, corresponding secondary device is answered
In tripped condition；When primary equipment is in cold standby or inspecting state, corresponding secondary device should be signal condition, this two
The soft pressing plate of other run switch of secondary device shunt tripping should exit.
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| CN111130218A (en) * | 2019-12-25 | 2020-05-08 | 深圳供电局有限公司 | Transformer substation security bus difference unification device |
| CN111948436A (en) * | 2020-07-14 | 2020-11-17 | 许继集团有限公司 | Secondary voltage sharing device and station terminal |
| CN112255481A (en) * | 2020-10-16 | 2021-01-22 | 珠海优特电力科技股份有限公司 | Target equipment anti-error detection method and device, storage medium and electronic device |
| CN112290434A (en) * | 2020-10-16 | 2021-01-29 | 珠海优特电力科技股份有限公司 | Automatic inspection method and device for secondary equipment state, storage medium and electronic device |
| CN112578762A (en) * | 2019-09-29 | 2021-03-30 | 国网重庆市电力公司 | Transformer substation primary and secondary equipment state monitoring method and system based on equipment state calculation |
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| CN113254545A (en) * | 2021-05-21 | 2021-08-13 | 国网河北省电力有限公司邯郸供电分公司 | Method for checking state of pressing plate of secondary equipment of intelligent substation |
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| CN112578762A (en) * | 2019-09-29 | 2021-03-30 | 国网重庆市电力公司 | Transformer substation primary and secondary equipment state monitoring method and system based on equipment state calculation |
| CN111130218A (en) * | 2019-12-25 | 2020-05-08 | 深圳供电局有限公司 | Transformer substation security bus difference unification device |
| CN111130218B (en) * | 2019-12-25 | 2022-05-10 | 深圳供电局有限公司 | Transformer substation security bus difference unification device |
| CN111948436A (en) * | 2020-07-14 | 2020-11-17 | 许继集团有限公司 | Secondary voltage sharing device and station terminal |
| CN112255481A (en) * | 2020-10-16 | 2021-01-22 | 珠海优特电力科技股份有限公司 | Target equipment anti-error detection method and device, storage medium and electronic device |
| CN112290434A (en) * | 2020-10-16 | 2021-01-29 | 珠海优特电力科技股份有限公司 | Automatic inspection method and device for secondary equipment state, storage medium and electronic device |
| CN112798883A (en) * | 2020-12-11 | 2021-05-14 | 国网浙江省电力有限公司杭州供电公司 | State monitoring method and device for primary and secondary equipment of 110kV transformer substation |
| CN113254545A (en) * | 2021-05-21 | 2021-08-13 | 国网河北省电力有限公司邯郸供电分公司 | Method for checking state of pressing plate of secondary equipment of intelligent substation |
| CN113254545B (en) * | 2021-05-21 | 2023-02-03 | 国网河北省电力有限公司邯郸供电分公司 | Method for checking state of pressing plate of secondary equipment of intelligent substation |
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