CN114977481A - Relay protection device control method and system based on block chain technology - Google Patents
Relay protection device control method and system based on block chain technology Download PDFInfo
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- CN114977481A CN114977481A CN202110201765.1A CN202110201765A CN114977481A CN 114977481 A CN114977481 A CN 114977481A CN 202110201765 A CN202110201765 A CN 202110201765A CN 114977481 A CN114977481 A CN 114977481A
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- 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
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/60—Protecting data
- G06F21/62—Protecting access to data via a platform, e.g. using keys or access control rules
- G06F21/6218—Protecting access to data via a platform, e.g. using keys or access control rules to a system of files or objects, e.g. local or distributed file system or database
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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
- 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
- Y04S40/20—Information technology specific aspects, e.g. CAD, simulation, modelling, system security
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Abstract
The invention belongs to the field of relay protection device management and control, and provides a block chain technology-based relay protection device management and control method and system. The relay protection device control method based on the block chain technology comprises the steps of encrypting a fixed value template file to establish a one-to-one correspondence relationship between the fixed value template file and a protection device; the encrypted constant value template file is stored locally, uploaded to a regulation cloud platform through a secondary equipment online monitoring master station, and stored in a block chain server after being checked for consistency; and encrypting the complete constant value file generated after the setting calculation and submitting the complete constant value file to a block chain server for storage, and simultaneously issuing the encrypted constant value file to a transformer substation where a protection device is located so as to automatically perform constant value setting operation on the constant value file by deploying a centralized control master station in the transformer substation.
Description
Technical Field
The invention belongs to the field of relay protection device management and control, and particularly relates to a block chain technology-based relay protection device management and control method and system.
Background
The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.
The fixed value of the relay protection device is very important, and is related to whether the protection device can work normally. Once the protection fixed value is wrong, the protection device may malfunction or refuse to operate, so as to further affect the safe and stable operation of the power grid, and serious accidents such as power grid instability, large-area power failure of users and the like may be caused in severe cases.
Because the protection constant value is very important, the requirements on the field control and setting of the protection constant value are very strict. In order to avoid the error of the fixed value of the protection device, at present, workers are required to input the fixed value one by adopting a manual operation device on the spot according to a protection fixed value list provided by a management and control department, and a remote fixed value loading mode is not allowed. And when the fixed value is input on site, one person is needed to operate and monitor, so that the possibility of errors caused by manual operation is reduced. The inventors have found that such protection-fixed-value management and operation modes have the following problems:
(1) the working process is complicated and the working efficiency is low. To make protection value inputs or changes, personnel must first arrive at the substation site and, prior to operation, must issue a work order as per regulatory requirements. When the fixed value input operation is carried out, one person operates and the other person monitors, the operator needs to say the operation work content and the fixed value, the monitor needs to repeat, the whole working process is complicated, and the efficiency is low. Statistical data shows that the input and modification work of the fixed value of the protection device accounts for 40-60% of the total workload of the relevant team;
(2) the manual input of the constant value cannot completely avoid the possibility of errors. Although the operator + guardian mode is adopted, the possibility of error in the setting of the protection device cannot be completely avoided. The situation that the fixed value in the protection device is inconsistent with the fixed value on the fixed value list provided by the control department is found for many times on the actual site;
(3) the situation that the fixed value of the protection device is wrong cannot be automatically found. The setting of the fixed value of the protection device is completed in a manual operation mode, and if a certain fixed value setting is wrong, the wrong fixed value is difficult to find unless individual checking is carried out or special conditions such as the failure and misoperation of the protection device occur, so that great risk and hidden trouble are brought to the correct operation of the protection device.
Disclosure of Invention
In order to solve at least one technical problem in the background art, the invention provides a method and a system for controlling a relay protection device based on a block chain technology, wherein a setting value is calculated for each protection device, a corresponding fixed value file is generated, the fixed value file is issued to the corresponding protection device by means of a communication system, and the fixed value setting work is automatically completed.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention provides a relay protection device management and control method based on a block chain technology.
In one or more embodiments, a method for managing and controlling a relay protection device based on a block chain technology includes:
encrypting the fixed value template file to establish a one-to-one correspondence relationship between the fixed value template file and the protection device;
the encrypted constant value template file is stored locally, uploaded to a regulation cloud platform through a secondary equipment online monitoring master station, and stored in a block chain server after being checked for consistency;
and encrypting the complete constant value file generated after the setting calculation and submitting the complete constant value file to a block chain server for storage, and simultaneously issuing the encrypted constant value file to a transformer substation where a protection device is located so as to automatically perform constant value setting operation on the constant value file by deploying a centralized control master station in the transformer substation.
The second aspect of the invention provides a relay protection device management and control system based on the block chain technology.
In one or more embodiments, a relay protection device management and control system based on a block chain technology includes:
the template file encryption module is used for encrypting the fixed value template file so as to establish a one-to-one correspondence relationship between the fixed value template file and the protection device;
the template file storage module is used for storing the encrypted fixed value template file to the local, uploading the fixed value template file to a regulation and control cloud platform through the secondary equipment online monitoring master station, and storing the fixed value template file to the block chain server after the consistency of the file is checked;
and the constant value file control module is used for encrypting the complete constant value file generated after the setting calculation and submitting the complete constant value file to the block chain server for storage, and meanwhile, issuing the encrypted constant value file to the transformer substation where the protection device is located so as to automatically perform constant value setting operation on the constant value file in the transformer substation deployment centralized control master station.
A third aspect of the invention provides a computer-readable storage medium.
A computer-readable storage medium, on which a computer program is stored, which when executed by a processor, implements the steps in the relay protection device management and control method based on the block chain technology as described above.
A fourth aspect of the invention provides a computer apparatus.
A computer device includes a memory, a processor, and a computer program stored in the memory and executable on the processor, where the processor executes the program to implement the steps in the relay protection device management and control method based on the block chain technology.
Compared with the prior art, the invention has the beneficial effects that:
(1) by means of the strong encryption anti-counterfeiting function of the block chain, the strict one-to-one corresponding relation between the fixed value file and the protection device is established, the possibility of errors in the corresponding relation between the fixed value file and the protection device is fundamentally avoided, and the control reliability and the control efficiency of the fixed value file are improved.
(2) The encryption anti-counterfeiting function is utilized to independently detect the correctness of the constant value file at the side of the protection device, so that the condition that the constant value file is damaged or made mistakes is conveniently found in time, and the safety and the reliability of the protection of the constant value setting are further improved.
(3) By means of the functions of 'trace remaining in the whole process', 'traceable', 'transparent open', 'collective maintenance' and the like of the block chain, when the protection device finds that the fixed value file is wrong, the correct fixed value file can be obtained again, the protection device is ensured to use the correct fixed value file, and the safety and the reliability of automatic setting of the protection device are fundamentally improved.
Advantages of additional aspects of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention and together with the description serve to explain the invention and not to limit the invention.
Fig. 1 is a flowchart of a method for managing and controlling a relay protection device based on a block chain technology according to an embodiment of the present invention.
Detailed Description
The invention is further described with reference to the following figures and examples.
It is to be understood that the following detailed description is exemplary and is intended to provide further explanation of the invention as claimed. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the invention. As used herein, the singular forms "a", "an", and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
Example one
In order to solve the problems mentioned in the background art, an effective way is to automatically adjust the protection device. Namely, after the control department calculates the setting value for each protection device, the control department generates a corresponding fixed value file, and the fixed value file is issued to the corresponding protection device by means of the communication system, so as to automatically complete the fixed value setting work. Therefore, the working process of the constant value setting of the protection device can be greatly simplified, the working efficiency is improved, manpower and material resources are saved, the possibility of errors caused by manual constant value setting can be fundamentally avoided, and the safety of the operation and action of the protection device is improved. And (6) reliability.
Of course, there is a certain risk in using the automatic tuning method. For example, the number of protection devices is huge, the brands and the models are different, and each device corresponds to different fixed value files, so that the number of the fixed value files is also huge, and huge management and control workload and management and control difficulty are brought to management and control departments. If the corresponding relation between the fixed value file and the protection device is wrong, the protection device is set to be the wrong fixed value, and the consequence is very serious. In addition, the fixed value file may have errors or damages in the remote transmission process, which may also cause a fixed value setting error or an automatic setting failure of the protection device, and bring a large risk potential to the correct action of the protection device.
In order to improve the safety and reliability of the automatic setting of the fixed value of the protection device, the protection fixed value file must be efficiently and reliably controlled, and the correct corresponding relation between the fixed value file and the protection device is ensured; in addition, technical measures are also needed to be taken, the possible damage or error condition of the constant value file in the transmission process is found in time, the damaged constant value file can be automatically replaced, and the safety and the reliability of the automatic constant value setting of the protection device are improved.
Referring to fig. 1, the method for managing and controlling a relay protection device based on a block chain technology in this embodiment includes:
s101: and encrypting the fixed value template file to establish the one-to-one corresponding relation between the fixed value template file and the protection device.
The number of protection devices in a power grid is huge, and the protection devices relate to different manufacturers and brands, and even if the protection devices of the same manufacturer and brand are different in fixed value list content due to different device models or software versions. As a management and control department, in the face of a huge number of protection devices and fixed value files, how to perform efficient and reliable management and control is a key problem to be solved. The invention proposes the following solutions:
and each protection device generates a fixed value template file according to the respective fixed value content.
The constant value template file comprises the following contents: (1) device information; (2) file information; (3) and (5) setting value list information.
The device information includes, but is not limited to, a name of the protection device, a device model and a software version number, a manufacturer, a commissioning time of the device, and the like;
the file information includes but is not limited to the name of the protected primary equipment, a fixed value list number, a documentation date, transformer transformation ratio parameter setting and the like;
the fixed value list information includes, but is not limited to, a fixed value area code, fixed value details including a fixed value name, a data type, a fixed value unit, a fixed value range, a modification step length and the like.
In some embodiments, the MD5 algorithm is used to perform the above calculation to obtain a set of 128-bit hash values, which are stored in the constant value template file.
It should be noted here that other existing encryption algorithms can be used to encrypt the content in the constant-value template file, and those skilled in the art can select the encryption algorithm according to the actual situation, which will not be described here again.
The contents of the constant value template files corresponding to different protection devices are not the same and have uniqueness, and the MD5 algorithm is adopted for hash value calculation, so that the algorithm can ensure that the hash value corresponding to each constant value template file is also unique. The method and the device provide guarantee for efficient and reliable control of the fixed value file and accuracy of the corresponding relation between the fixed value file and the protection device.
S102: and storing the encrypted constant value template file to a local site, uploading the file to a regulation cloud platform through a secondary equipment online monitoring master station, and storing the file to a block chain server after checking the consistency of the file.
After the protection device generates the fixed value template file, the fixed value template file is locally stored, the fixed value template file is uploaded to a regulation cloud platform through a secondary device online monitoring master station and a communication system, meanwhile, the fixed value template file is stored in a block chain server after consistency verification, and the block chain server serves as a third party to store the accurate fixed value template file for file verification and source tracing.
The fixed value template file uses E file or XML file format, and the protection device outputs the fixed value template file in soft message mode.
Format of the fixed value template file: (XML File Format)
The online monitoring master station of the secondary equipment controls the protection devices in a plurality of substations in a certain area, and provides file transmission and information interaction services for the protection devices. And uploading the fixed value template file provided by the protection device to the regulation and control cloud platform through the secondary equipment online monitoring master station. The regulation and control cloud platform is a basic service facility for power grid dispatching, is responsible for collecting, storing and controlling data related to dispatching tasks, provides a uniform data service model and data service for the outside, and supports a third party to develop various application functions on the platform.
After the fixed value template file is transmitted to the regulation cloud platform, consistency check is firstly carried out, the function is based on the specific content of the fixed value template file, the hash value of the file is calculated according to a preset MD5 algorithm and is compared with the hash value in the fixed value template file uploaded by the protection device, the consistency of the hash value and the hash value indicates that the fixed value template file is correct, otherwise, the fixed value template file is considered to be wrong, and the corresponding protection device can be required to upload the fixed value template file again. Because the content of the constant value template file and the hash value obtained by calculation have uniqueness, a strict corresponding relation between the constant value template file and the protection device can be established, and the reliability and the efficiency of constant value protection and control are improved.
The control department calculates a fixed value for each protection device through setting calculation application on a control cloud platform, fills the fixed value calculation result into a fixed value template file provided by the corresponding protection device to generate a complete fixed value file, calculates the hash value again according to the content of the fixed value file, and stores the hash value as a part of the content of the file in the fixed value file.
S103: and encrypting the complete constant value file generated after the setting calculation and submitting the complete constant value file to a block chain server for storage, and simultaneously issuing the encrypted constant value file to a transformer substation where a protection device is located so as to automatically perform constant value setting operation on the constant value file by deploying a centralized control master station in the transformer substation.
On one hand, the generated constant value file is submitted to the block chain server through the scheduling control system, and the file is stored as a third party after the consistency check so as to be ready for file check and source tracing. And on the other hand, the fixed value file is transmitted to the transformer substation where the protection device is located through the fixed value file transmission service of the regulation and control cloud platform, a centralized control station master station is deployed in the transformer substation, and information and files of all protection devices in the control station are controlled. In order to ensure the correctness of the fixed value file again and improve the reliability of automatic setting, a manual checking and confirming function can be set at the master station of the centralized station, the content and the hash value of the issued fixed value file are further checked and checked manually, and the fixed value file is issued to the protection device after being confirmed to be correct.
After receiving the fixed value file, the protection device automatically opens the fixed value file, recalculates the hash value of the fixed value file according to the established MD5 algorithm, compares the hash value with the hash value in the fixed value file, and indicates that the file content is correct if the hash value is consistent with the hash value in the fixed value file. The display of the protection device can also display the calculated hash value on site, so that the operator can conveniently check the hash value. After the protection device finishes automatic setting, the fixed value list can be printed out through a local printer, so that operators can check and verify the fixed value list on site conveniently, and the fixed value is ensured to be accurate.
If the fixed value file is wrong, the protection device can monitor the substation and the main station on line through the secondary equipment and send a fixed value file transmission request to the block chain server. And the block chain server responds to the request of the protection device, re-issues the constant value file to the centralized control master station where the protection device is located through the file transmission service of the scheduling cloud, and performs check and verification on the constant value file again until the constant value file is correct.
Grid companies have strict and clear partition management and control regulations on grid operating data. The data in the area I is the data with the highest security level, is mainly used for operation and inspection work of a service substation, and is not allowed to be accessed externally under the general condition. The safety level of the data in the area II is weaker than that of the data in the area I, the data in the area II is mainly used for service power grid dispatching work, and external access is not supported under the general condition. And regulating and controlling a region III deployed by the cloud platform, wherein the requirement on the safety of data is lower than that of a region II, and the data in the region III is allowed to be accessed externally under the condition of ensuring the safety.
The remote tuning function according to this embodiment may involve data interaction between different zones, and therefore a physical firewall needs to be configured for the zone I, and a forward and reverse isolation device needs to be configured between the zone II and the zone III to prevent potential safety hazards that may be caused by data communication.
Example two
The embodiment provides a relay protection device management and control system based on block chain technology, and it includes:
the template file encryption module is used for encrypting the fixed value template file so as to establish a one-to-one correspondence relationship between the fixed value template file and the protection device;
the template file storage module is used for storing the encrypted fixed value template file to the local, uploading the fixed value template file to a regulation cloud platform through the secondary equipment online monitoring master station, and storing the fixed value template file to the block chain server after the consistency of the file is checked;
and the constant value file control module is used for encrypting the complete constant value file generated after the constant calculation and submitting the complete constant value file to the block chain server for storage, and meanwhile, issuing the encrypted constant value file to the transformer substation where the protection device is located so as to automatically perform constant value setting operation on the constant value file in the transformer substation deployment centralized control master station.
Each module in the system for managing and controlling a relay protection device based on a block chain technology in this embodiment corresponds to a step in the method for managing and controlling a relay protection device based on a block chain technology in the first embodiment one by one, and the specific implementation process is the same, which will not be described herein again.
EXAMPLE III
The embodiment provides a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the steps in the relay protection device management and control method based on the blockchain technology as described in the first embodiment.
Example four
The embodiment provides a computer device, which includes a memory, a processor, and a computer program stored in the memory and executable on the processor, where the processor executes the program to implement the steps in the relay protection device management and control method based on the block chain technology according to the first embodiment.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of a hardware embodiment, a software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above may be implemented by a computer program, which may be stored in a computer readable storage medium and executed by a computer to implement the processes of the embodiments of the methods described above. The storage medium may be a magnetic disk, an optical disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), or the like.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A relay protection device control method based on a block chain technology is characterized by comprising the following steps:
encrypting the fixed value template file to establish a one-to-one correspondence relationship between the fixed value template file and the protection device;
the encrypted constant value template file is stored locally, uploaded to a regulation cloud platform through a secondary equipment online monitoring master station, and stored in a block chain server after being checked for consistency;
and encrypting the complete constant value file generated after the setting calculation and submitting the complete constant value file to a block chain server for storage, and simultaneously issuing the encrypted constant value file to a transformer substation where a protection device is located so as to automatically perform constant value setting operation on the constant value file by deploying a centralized control master station in the transformer substation.
2. The method for managing and controlling a relay protection device based on a block chain technology as claimed in claim 1, wherein corresponding constant value template files are correspondingly generated according to respective constant value contents of the protection devices.
3. The method for managing and controlling a relay protection device based on a block chain technology as claimed in claim 1, wherein the fixed value template file includes device information, file information, and fixed value list information.
4. The relay protection device control method based on the block chain technology, as claimed in claim 1, wherein the MD5 algorithm is used to calculate the neying in the fixed value template file to obtain a set of hash values, and the hash values are stored in the fixed value template file.
5. The relay protection device control method based on the block chain technology as claimed in claim 4, wherein in the consistency check process, the hash value of the fixed value template file is calculated according to a predetermined MD5 algorithm, and is compared with the hash value in the fixed value template file uploaded by the protection device, and the consistency of the hash value and the hash value indicates that the fixed value template file is correct, otherwise, the fixed value template file is considered to be wrong.
6. The method for managing and controlling a relay protection device based on a block chain technology as claimed in claim 1, wherein the fixed value template file uses an E file or XML file format, and the protection device outputs the fixed value template file in a soft message manner.
7. The relay protection device control method based on the blockchain technology as claimed in claim 1, wherein if the fixed value file is wrong, the protection device sends a fixed value file transmission request to the blockchain server through the secondary device online monitoring master station, the blockchain server responds to the request of the protection device, re-sends the fixed value file to the centralized control master station where the protection device is located, and performs check and verification on the fixed value file again until the fixed value file is correct.
8. The utility model provides a relay protection device management and control system based on block chain technique which characterized in that includes:
the template file encryption module is used for encrypting the fixed value template file so as to establish a one-to-one correspondence relationship between the fixed value template file and the protection device;
the template file storage module is used for storing the encrypted fixed value template file to the local, uploading the fixed value template file to a regulation cloud platform through the secondary equipment online monitoring master station, and storing the fixed value template file to the block chain server after the consistency of the file is checked;
and the constant value file control module is used for encrypting the complete constant value file generated after the constant calculation and submitting the complete constant value file to the block chain server for storage, and meanwhile, issuing the encrypted constant value file to the transformer substation where the protection device is located so as to automatically perform constant value setting operation on the constant value file in the transformer substation deployment centralized control master station.
9. A computer-readable storage medium, on which a computer program is stored, wherein the program, when executed by a processor, implements the steps in the method for managing a relay protection device based on a block chain technology according to any one of claims 1 to 7.
10. A computer device comprising a memory, a processor and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the steps of the method for managing and controlling a relay protection device based on a block chain technology according to any one of claims 1 to 7.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116760851A (en) * | 2023-08-18 | 2023-09-15 | 绛县祥信盈风力发电有限公司 | Cloud storage method for relay protection fixed value list |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116760851A (en) * | 2023-08-18 | 2023-09-15 | 绛县祥信盈风力发电有限公司 | Cloud storage method for relay protection fixed value list |
| CN116760851B (en) * | 2023-08-18 | 2023-10-17 | 绛县祥信盈风力发电有限公司 | Cloud storage method for relay protection fixed value list |
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