CN113507167A - Remote operation instruction abnormity identification locking method, storage medium and power control system - Google Patents
Remote operation instruction abnormity identification locking method, storage medium and power control system Download PDFInfo
- Publication number
- CN113507167A CN113507167A CN202110774721.8A CN202110774721A CN113507167A CN 113507167 A CN113507167 A CN 113507167A CN 202110774721 A CN202110774721 A CN 202110774721A CN 113507167 A CN113507167 A CN 113507167A
- Authority
- CN
- China
- Prior art keywords
- frequency
- instruction
- control
- operation instruction
- source
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 29
- 238000012795 verification Methods 0.000 claims abstract description 16
- 230000000903 blocking effect Effects 0.000 claims description 10
- 230000005856 abnormality Effects 0.000 claims description 9
- 238000004590 computer program Methods 0.000 claims description 7
- 238000004364 calculation method Methods 0.000 claims description 5
- 230000002159 abnormal effect Effects 0.000 abstract description 5
- 230000011664 signaling Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000009545 invasion Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00032—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for
- H02J13/00036—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for the elements or equipment being or involving switches, relays or circuit breakers
- H02J13/0004—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for the elements or equipment being or involving switches, relays or circuit breakers involved in a protection system
-
- 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
- H02H7/262—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 involving transmissions of switching or blocking orders
-
- 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
- Y04S10/20—Systems supporting electrical power generation, transmission or distribution using protection elements, arrangements or systems
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The invention discloses a remote operation instruction abnormity identification locking method, a storage medium and a power control system, wherein the method comprises the following steps: establishing a trusted white list of an operation source, setting a timeliness threshold of an operation instruction, and calculating an operation frequency threshold; the server receives the operation instruction, acquires operation source information, control object information, time identification and operation frequency of the target device of the operation instruction, and checks the operation source, effectiveness, timeliness and single device frequency of the operation instruction; acquiring the control frequency of a target station of the operation instruction, and checking the station frequency; and releasing all the verified operation instructions, and locking the operation instructions which do not pass any verification. According to the locking method, the remote operation instruction is verified at the server end before control, the operation frequency of the plant station can be verified, the phenomenon that the power system is invaded by the replay of the untrusted abnormal instruction and the external recorded control instruction is comprehensively prevented, and the reliability and the safety of the power system are further improved.
Description
Technical Field
The invention relates to the technical field of power system operation control, in particular to a remote operation instruction abnormity identification locking method, a storage medium and a power control system.
Background
The dependence of the modern society on a power system is stronger and stronger, the safe and stable operation of a power grid is related to nationality, the safety of remote operation of equipment relates to the stable operation of the power grid, any remote control misoperation can possibly cause serious consequences and threatens the safe and stable operation of the power grid; and from the initiation of operation control to the correct response of the substation equipment, the whole process comprises a plurality of links, and potential safety hazards exist.
The existing remote operation verification mainly focuses on verification in the operation process, and the verification is only performed on the aspects of validity, abnormal repeated control and the like of an instruction, so that the existing remote operation verification is still not safe and reliable enough.
Disclosure of Invention
The purpose of the invention is as follows: the invention aims to provide a remote operation instruction abnormity identification locking method, which is used for verifying a remote operation instruction before control, verifying the operation frequency of a plant station and further improving the reliability and the safety.
Another objective of the present invention is to provide a storage medium storing instructions or a computer program for the above-mentioned fault detection lockout method, and a power control system capable of implementing the above-mentioned lockout method.
The technical scheme is as follows: the invention relates to a remote operation instruction abnormity identification locking method for an electric power system, which specifically comprises the following steps:
establishing a trusted white list of an operation source, setting a timeliness threshold of an operation instruction, and calculating an operation frequency threshold;
the server receives the operation instruction, acquires operation source information, control object information, time identification and operation frequency of the target device of the operation instruction, and checks the operation source, effectiveness, timeliness and single device frequency of the operation instruction;
acquiring the control frequency of a target station of the operation instruction, and checking the station frequency;
and releasing all the verified operation instructions, and locking the operation instructions which do not pass any verification.
Further, the step of obtaining the control frequency of the target plant of the operation instruction further includes, after the plant frequency check is performed: and acquiring the control operation frequency of a downlink outlet of the whole control system, and checking the system frequency.
Further, the server receives the operation instruction, obtains operation source information, control object information, time identifier and operation frequency of the target device of the operation instruction, and the operation source information in the operation source, timeliness and single device frequency verification of the operation instruction comprises a user source, an operation node source, an application source and an operation application program source.
Further, the step server receives the operation instruction, acquires operation source information, control object information, a time identifier and an operation frequency of the target device of the operation instruction, and the control object information in the operation source, timeliness and single device frequency verification of the operation instruction includes device information, a control object value, application information and various attributes of the operation.
Further, the device information includes a device remote signaling value, a remote signaling quality code, a control point number, and a channel state.
Further, the step of obtaining the control frequency of the target plant of the operation instruction further includes, before performing the plant frequency check: and checking whether the operation control command is given a braking command or not.
Further, the step of establishing a trusted white list of operation sources, setting a timeliness threshold of an operation instruction, setting an operation frequency band calculation time range and calculating an operation frequency threshold in the operation frequency threshold, wherein the operation frequency threshold includes an equipment operation frequency threshold, a plant station equipment operation frequency threshold and an operating system operation frequency threshold, and the equipment operation frequency threshold, the plant station equipment operation frequency threshold and the operating system operation frequency threshold are respectively obtained by multiplying the maximum operation times of equipment, a plant station and an operating system in unit time at the current date by respective corresponding alarm weighting coefficients and locking weighting coefficients.
Further, the step establishes a trusted white list of the operation source, sets a timeliness threshold of the operation instruction, sets an operation frequency band calculation time range, and calculates an update cycle of the operation frequency threshold in the operation frequency threshold to be once a day.
The computer-readable storage medium of the present invention stores a computer program configured to implement the remote operation instruction abnormality recognition blocking method according to any one of claims 1 to 8 when executed.
The power control system according to the present invention, a controller thereof comprising the storage medium according to claim 9.
Has the advantages that: compared with the prior art, the invention has the following advantages: and the verification is carried out before the control of the operation instruction, so that the safety and the reliability of the system are further improved. Meanwhile, the operation frequency of the single device is verified, and meanwhile, the operation frequency of the plant station and the whole operating system is verified, so that abnormal control caused by the fact that the operation frequency of the plant station and the operating system is abnormally high in unit time is prevented.
Drawings
Fig. 1 is a flowchart of a remote operation command exception identification blocking method according to an embodiment of the present invention.
Detailed Description
The technical scheme of the invention is further explained by combining the attached drawings.
According to the embodiment of the invention, the remote operation instruction abnormity identification locking method comprises the following steps:
establishing a credible white list of an operation source, setting a timeliness threshold of an operation instruction, setting an operation frequency band calculation time range and calculating an operation frequency threshold;
the server receives the operation instruction, acquires operation source information, control object information, time identification and operation frequency of the target device of the operation instruction, and checks the operation source, effectiveness, timeliness and single device frequency of the operation instruction;
acquiring the control frequency of a target station of the operation instruction, and checking the station frequency;
and releasing all the verified operation instructions, and locking the operation instructions which do not pass any verification.
In some embodiments, the operation source information specifically includes a user source, an operation node source, an application source, and an operation application source. Correspondingly, the trusted white list of the operation source also has a corresponding user source white list, an operation node source white list, an application source white list and an operation application program source white list. When the operation source is checked, the operation instruction of any operation source information which is not in the corresponding white list is blocked, the operation instruction is prevented from being sent to the corresponding equipment through the downlink outlet, and the power system abnormity caused by illegal instruction operation of the equipment is avoided.
In some embodiments, the control object information includes device information, a control target value, application information, and attributes of the operation, where the device information further includes a device remote signaling value, a remote signaling quality code, a control point number, a channel state, and the like. And during validity verification, comparing the control object information with the information of the corresponding equipment in the database, and when the information is consistent, passing verification, and when the information is inconsistent, locking the operation instruction.
And time validity checking, namely when the time identifier of the operation instruction is within the time validity threshold value, locking the expired operation instruction with the time identifier exceeding the time validity threshold value through checking. The single-device frequency check and the plant station frequency check are to compare whether the operation frequency of the target device and the operation frequency of the target plant station exceed respective operation frequency thresholds or not in the current time period, and to lock the operation instruction exceeding the frequency threshold, so that abnormal high-frequency operation on the device or the plant station in unit time is avoided, and the phenomenon that the power system is invaded by replaying an external invasion recording control instruction and the power system is prevented from being damaged.
According to the remote operation instruction abnormity identification locking method in the technical scheme, the operation instruction issued by the client is checked and locked at the server, and even if the operation instruction can break through an instruction interaction mechanism of the client to send a control instruction to the server, the control instruction can be locked and intercepted by the server. Meanwhile, on the basis of a conventional operation source, effectiveness, timeliness and operation frequency verification of a single device, the operation frequency of the target plant station is verified, the situation that an external intrusion recording control instruction performs instruction replay on a plurality of devices of the same plant station to invade the power system to cause system faults is prevented, and the stability and reliability of the power system are further improved.
Referring to fig. 1, in some embodiments, the remote operation command abnormality recognition blocking method further includes: and acquiring the control operation frequency of a downlink outlet of the whole control system, and checking the system frequency. Before the operation instruction is transferred, whether the number of the operation instructions discharged from the downlink outlet of the server of the control system in unit time is abnormal or not is verified, more operation instructions can be timely prevented from being transferred in a short time, and the reliability of the system is further improved.
Referring to fig. 1, in some embodiments, the remote operation command abnormality recognition blocking method further includes: and checking whether the operation control command is given a braking command or not. When the braking instruction is given, all the operation instructions are locked. It is to be appreciated that in some embodiments, some emergency operation instructions may not be counted in the operation frequency count of the equipment, plant and control system, and are not passed through directly by frequency check. Such as load batch cutting operation during extra-high voltage direct current blocking fault handling or operation of a large amount of equipment in extreme severe weather.
In some embodiments, the operation frequency threshold of the device, the plant station, and the control system is obtained by multiplying the maximum operation coefficient of the device, the plant station, and the control system in unit time at the current date by the corresponding alarm weighting coefficient and the blocking weighting coefficient. The unit can be preferably 5min, and the alarm weighting coefficient and the blocking weighting coefficient respectively default to 0.8 and 1.1 and can be set and modified by personnel according to actual operation experience. The maximum operation coefficient of the equipment, the plant station and the control system in unit time can be determined by the remote operation historical alarm record statistical value in the latest period of time, and can also be set manually according to actual operation experience. The operating frequency thresholds for the equipment, plant and control systems are preferably updated once a day.
According to the computer-readable storage medium of the embodiment of the invention, a computer program is stored, and the computer program is a coding program of the remote operation instruction abnormity identification locking method. According to the power control system of the embodiment of the invention, the controller comprises the storage medium, the controller can call a computer program in the storage medium, and the control server implements the remote operation command abnormity identification locking method.
Claims (10)
1. A remote operation instruction abnormity identification locking method is characterized by comprising the following steps:
establishing a trusted white list of an operation source, setting a timeliness threshold of an operation instruction, and calculating an operation frequency threshold;
the server receives the operation instruction, acquires operation source information, control object information, time identification and operation frequency of the target device of the operation instruction, and checks the operation source, effectiveness, timeliness and single device frequency of the operation instruction;
acquiring the control frequency of a target station of the operation instruction, and checking the station frequency;
and releasing all the verified operation instructions, and locking the operation instructions which do not pass any verification.
2. The method according to claim 1, wherein the step of obtaining the control frequency of the target plant station of the operation command further comprises, after the plant station frequency is verified: and acquiring the control operation frequency of a downlink outlet of the whole control system, and checking the system frequency.
3. The locking method for remote operation command abnormality recognition according to claim 1, wherein the step server receives the operation command, obtains operation source information, control object information, time stamp and operation frequency of the target device of the operation command, and the operation source information in the operation source, timeliness and single device frequency verification of the operation command includes a user source, an operation node source, an application source and an operation application program source.
4. The remote operation instruction abnormality identification blocking method according to claim 1, wherein the step server receives the operation instruction, obtains operation source information, control object information, a time identifier and an operation frequency of the target device of the operation instruction, and the control object information in the operation source, timeliness and single device frequency verification of the operation instruction includes device information, a control target value, application information and various attributes of the operation.
5. The remote operation command abnormality recognition locking method according to claim 4, wherein the device information includes a device telecommand value, a telecommand quality code, a control point number, a channel status, and the like.
6. The method according to claim 1, wherein the step of obtaining the control frequency of the target plant of the operation command further comprises, before performing the plant frequency check: and checking whether the operation control command is given a braking command or not.
7. The remote operation instruction abnormality identification locking method according to claim 1, wherein the step of establishing a trusted white list of operation sources, setting a timeliness threshold of an operation instruction, setting an operation frequency band calculation time range and calculating an operation frequency threshold, wherein the operation frequency threshold in the operation frequency threshold includes a device operation frequency threshold, a plant station device operation frequency threshold and an operation system operation frequency threshold, and the device operation frequency threshold, the plant station device operation frequency threshold and the operation system operation frequency threshold are respectively obtained by multiplying the maximum operation times of the device, the plant station and the operation system in a unit time at the current date by respective corresponding alarm weighting coefficients and locking weighting coefficients.
8. The remote operation command abnormality recognition blocking method according to claim 1, wherein the steps of establishing a trusted white list of operation sources, setting a timeliness threshold of the operation command, setting an operation frequency band calculation time range and calculating an update cycle of an operation frequency threshold in the operation frequency threshold to once a day.
9. A computer-readable storage medium storing a computer program, wherein the computer program is configured to implement the remote operation instruction abnormality recognition blocking method according to any one of claims 1 to 8 when executed.
10. A power control system characterized in that a controller thereof comprises the storage medium according to claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110774721.8A CN113507167A (en) | 2021-07-08 | 2021-07-08 | Remote operation instruction abnormity identification locking method, storage medium and power control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110774721.8A CN113507167A (en) | 2021-07-08 | 2021-07-08 | Remote operation instruction abnormity identification locking method, storage medium and power control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113507167A true CN113507167A (en) | 2021-10-15 |
Family
ID=78012260
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110774721.8A Pending CN113507167A (en) | 2021-07-08 | 2021-07-08 | Remote operation instruction abnormity identification locking method, storage medium and power control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113507167A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114243896A (en) * | 2021-10-25 | 2022-03-25 | 国网江苏省电力有限公司苏州供电分公司 | Method and system for checking whole-process operation of remote control master station considering multidimensional information |
| CN115528811A (en) * | 2022-09-30 | 2022-12-27 | 南京南瑞继保电气有限公司 | Remote control operation mutual exclusion locking method for monitoring system of pumped storage power station |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4531182A (en) * | 1969-11-24 | 1985-07-23 | Hyatt Gilbert P | Machine control system operating from remote commands |
| WO2012155494A1 (en) * | 2011-05-16 | 2012-11-22 | 河北省电力研究院 | Verifying method of optimal control parameter in whole network for automatic voltage control system |
| CN106777755A (en) * | 2016-12-30 | 2017-05-31 | 国网浙江省电力公司温州供电公司 | The calibration equipment and system of a kind of wall latching logic |
| CN109861393A (en) * | 2019-02-25 | 2019-06-07 | 国家电网有限公司 | The control method and terminal device of anti-misoperation locking |
| CN110816553A (en) * | 2019-11-19 | 2020-02-21 | 日立楼宇技术（广州）有限公司 | Platform shielding door control method and system |
| CN112184478A (en) * | 2020-08-31 | 2021-01-05 | 国网江苏省电力有限公司苏州供电分公司 | Method and system for controlling boundary operation equipment in heterogeneous system in distribution network fault recovery |
-
2021
- 2021-07-08 CN CN202110774721.8A patent/CN113507167A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4531182A (en) * | 1969-11-24 | 1985-07-23 | Hyatt Gilbert P | Machine control system operating from remote commands |
| WO2012155494A1 (en) * | 2011-05-16 | 2012-11-22 | 河北省电力研究院 | Verifying method of optimal control parameter in whole network for automatic voltage control system |
| CN106777755A (en) * | 2016-12-30 | 2017-05-31 | 国网浙江省电力公司温州供电公司 | The calibration equipment and system of a kind of wall latching logic |
| CN109861393A (en) * | 2019-02-25 | 2019-06-07 | 国家电网有限公司 | The control method and terminal device of anti-misoperation locking |
| CN110816553A (en) * | 2019-11-19 | 2020-02-21 | 日立楼宇技术（广州）有限公司 | Platform shielding door control method and system |
| CN112184478A (en) * | 2020-08-31 | 2021-01-05 | 国网江苏省电力有限公司苏州供电分公司 | Method and system for controlling boundary operation equipment in heterogeneous system in distribution network fault recovery |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114243896A (en) * | 2021-10-25 | 2022-03-25 | 国网江苏省电力有限公司苏州供电分公司 | Method and system for checking whole-process operation of remote control master station considering multidimensional information |
| CN114243896B (en) * | 2021-10-25 | 2024-03-29 | 国网江苏省电力有限公司苏州供电分公司 | Remote control master station whole process operation checking method and system considering multidimensional information |
| CN115528811A (en) * | 2022-09-30 | 2022-12-27 | 南京南瑞继保电气有限公司 | Remote control operation mutual exclusion locking method for monitoring system of pumped storage power station |
| CN115528811B (en) * | 2022-09-30 | 2023-09-08 | 南京南瑞继保电气有限公司 | Remote control operation mutual exclusion locking method for pumped storage power station monitoring system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113507167A (en) | Remote operation instruction abnormity identification locking method, storage medium and power control system | |
| CN109684179B (en) | Early warning method, device, equipment and storage medium for system fault | |
| CN111106671B (en) | Five-prevention management control method and system for substation coded lock | |
| CN105406601A (en) | Intelligent power distribution cabinet monitoring system and monitoring method | |
| CN111428984A (en) | Risk early warning and analysis method of intelligent safety electricity utilization management system | |
| CN111949718A (en) | Data anomaly analysis method based on cloud computing | |
| CN110738748A (en) | patrol method based on forbidden system | |
| EP3747098A1 (en) | Fault detection apparatus of a local substation and device for reporting a fault to a central control apparatus | |
| CN117665557A (en) | Intelligent monitoring method and system for circuit breaker | |
| KR102128333B1 (en) | Remote electrical safety system and method with electrical spark monitoring | |
| CN105023198A (en) | Network rule constraint-based power plant data anomaly identification method | |
| Filippini et al. | Reliability assessment of the LHC machine protection system | |
| CN114979268B (en) | Data transmission method, device, server and system for industrial gas enterprise | |
| CN111401760A (en) | Safety and stability control device exception handling decision method and device | |
| CN111314382A (en) | Network safety protection method suitable for high-frequency emergency control system | |
| CN107038392A (en) | A kind of method of client integrity detection | |
| CN113411353B (en) | Network security protection method and system | |
| KR101888409B1 (en) | Feeder remote terminal unit | |
| CN106559247B (en) | Alarm management method in network management system and network management system | |
| CN109599848B (en) | Defect processing method and defect processing system for power grid secondary equipment | |
| CN114243896B (en) | Remote control master station whole process operation checking method and system considering multidimensional information | |
| CN111146863A (en) | Power safety detection method for transformer substation | |
| CN112302864B (en) | Transformer signal processing device, method and system | |
| CN116865203B (en) | Electronic load overcurrent protection method, electronic load and computer readable storage medium | |
| CN110568315A (en) | Bus fault probability calculation method based on running state abnormal information |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |