Relay protection setting value on-site checking method and system

Abstract

The invention discloses a relay protection fixed value on-site checking method and system, a fixed value setting calculation application module reads an equipment unique code, a fixed value model, a fixed value actual value and a fixed value Hash value of a relay protection device through a station end II area gateway machine, a monitoring main station and a fixed value advanced application module in sequence, and after fixed value calculation is completed, the fixed value setting calculation application module sends the fixed value to the relay protection device through the station end II area gateway machine, the monitoring main station and the fixed value advanced application module; issuing the new constant value hash value and the equipment unique code to a constant value information query application module; the handheld on-site checking device scans the two-dimensional code to obtain the unique device code and the first constant value hash value of the relay protection device, obtains the second constant value hash value through the constant value information query application module, compares the first constant value hash value with the second constant value hash value, and if the first constant value hash value and the second constant value hash value are consistent, the checking is passed, otherwise, the checking is not passed. According to the technical scheme, the operation complexity of on-site operation and maintenance personnel can be reduced, manual intervention links are reduced, the reliability of the system is improved, the on-site checking time is shortened, and reliable and efficient on-site checking of the fixed value of the relay protection device is achieved.

Description

Technical Field

[0001] The present invention belongs to the technical field of relay protection setting verification in the field of power systems, and in particular relates to a method and system for on-site verification of relay protection setting. Background Art

[0002] The setting value is the basis for the correct operation of the relay protection device. The correctness and adaptability of the setting value play a very important role in the correct operation of the relay protection and the safe operation of the power grid. With the widespread promotion of unmanned substations and the improvement of the level of automated operation, the demand for remote verification of the setting value of relay protection devices by the dispatching master station through the power dispatching data network is increasing.

[0003] Currently, there are two ways to implement the setting verification of relay protection devices, one is the traditional on-site verification, and the other is the online verification based on communication.

[0004] Among them, the traditional manual on-site verification is that the operation and maintenance personnel check the fixed value on the LCD or print the fixed value in the substation to manually compare it with the fixed value content issued by the dispatcher, and report the fixed value verification results to the dispatcher after confirming that they are correct. Although this traditional working method is mature and reliable, it has a large workload, low efficiency, and involves a large number of manual verification operations, which requires a high sense of responsibility from the operators and is stressful.

[0005] In the case of equipment shutdown and maintenance, temporary work on site is essential, and on-site verification of equipment recovery is inevitable. Therefore, based on the existing hash value-based relay protection setting reading and writing and online verification technology, it is still of practical significance to improve the efficiency of traditional on-site verification work. Summary of the invention

[0006] The purpose of the present invention is to provide a method and system for on-site calibration of relay protection settings, reduce the operation complexity of on-site operation and maintenance personnel, reduce manual intervention links, improve system reliability, shorten on-site calibration time, and realize reliable and efficient on-site calibration of relay protection device settings.

[0007] In order to achieve the above object, the solution of the present invention is:

[0008] A method for checking relay protection setting values ​​on site comprises the following steps:

[0009] Obtaining a device unique code, a set value model, and a current first set value actual value of the relay protection device, and performing a set value calculation to obtain a second set value actual value and a second set value hash value;

[0010] Obtain the current first fixed value hash value, and if the first fixed value hash value is different from the second fixed value hash value, modify the first fixed value actual value of the relay protection device to the second fixed value actual value;

[0011] During verification, the unique device code of the relay protection device, the current third fixed value hash value and the second fixed value hash value are obtained; the third fixed value hash value and the second fixed value hash value are compared, if the results are consistent, the verification passes, otherwise the verification fails.

[0012] Obtaining a device unique code, a set value model, and a first set value actual value of the relay protection device, performing a set value calculation to obtain a second set value actual value and a second set value hash value, including:

[0013] Obtaining a device unique code of the relay protection device, a current first set value hash value, and a current set value file, wherein the current set value file contains a set value model and current first set value actual value information;

[0014] The second fixed value actual value is calculated based on the device unique code, the current first fixed value hash value and the current fixed value file, and the current fixed value file is used as the fixed value model information. On this basis, the second fixed value actual value is filled into the actual value field to form a modified fixed value file, and the second fixed value actual value is calculated in sequence according to the model order to obtain the second fixed value hash value.

[0015] Modifying the first set value actual value of the relay protection device to the second set value actual value includes:

[0016] Sending a fixed value modification file to trigger a fixed value modification operation; the fixed value modification file includes an actual value of the second fixed value;

[0017] The modified setting file is obtained, and the relay protection device modifies the current first setting actual value to the second setting actual value.

[0018] A relay protection setting local verification system, comprising:

[0019] A fixed value setting calculation application module is used to obtain the device unique code, the fixed value model and the current first fixed value actual value of the relay protection device, and perform fixed value calculation to obtain the second fixed value actual value and the second fixed value hash value; it is also used to publish the device unique code, the second fixed value actual value and the second fixed value hash value to the fixed value advanced application module, and publish the device unique code and the second fixed value hash value to the fixed value information query application module;

[0020] A fixed value advanced application module, used for obtaining the device unique code, fixed value model, current first fixed value actual value and current first fixed value hash value of the relay protection device through the monitoring master station, and if the first fixed value hash value is different from the second fixed value hash value, modifying the first fixed value actual value of the relay protection device to the second fixed value actual value through the control master station;

[0021] The handheld on-site calibration device is used to scan the QR code of the relay protection device during calibration, obtain the device unique code and the current third fixed value hash value of the relay protection device, and send the device unique code to the fixed value information query application module to obtain the second fixed value hash value; it is also used to compare the third fixed value hash value with the second fixed value hash value. If the results are consistent, the calibration passes, otherwise the calibration fails.

[0022] The above-mentioned fixed value setting calculation application module is used to obtain the device unique code, fixed value model and first fixed value actual value of the relay protection device, perform fixed value calculation to obtain the second fixed value actual value and the second fixed value hash value, including:

[0023] The fixed value setting calculation application module obtains the device unique code of the relay protection device, the current first fixed value hash value and the current fixed value file, wherein the current fixed value file contains the fixed value model and the current first fixed value actual value information;

[0024] The fixed value setting calculation application module sets and calculates the second fixed value actual value, and uses the current fixed value file as the fixed value model information. On this basis, the second fixed value actual value is filled into the actual value field to form a modified fixed value file, and the second fixed value actual value is calculated in sequence according to the model order to obtain the second fixed value hash value.

[0025] The above-mentioned fixed value advanced application module is used to obtain the device unique code, fixed value model, current first fixed value actual value and current first fixed value hash value of the relay protection device through the monitoring master station, including:

[0026] The monitoring master station obtains the device unique code, the current first fixed value hash value and the current fixed value file of the relay protection device through the station-side II zone gateway, wherein the current fixed value file contains the fixed value model and the current first fixed value actual value information;

[0027] The monitoring master station transmits the acquired information to the fixed value advanced application module.

[0028] The above-mentioned monitoring master station obtains the device unique code and the current set value hash value of the relay protection device through the read model service of the communication protocol; the monitoring master station obtains the current set value file of the relay protection device through the file service of the communication protocol.

[0029] The above-mentioned fixed value advanced application module modifies the first fixed value actual value of the relay protection device to the second fixed value actual value by controlling the main station, including:

[0030] The fixed value advanced application module sends a modified fixed value file to the control master station to trigger a modified fixed value operation; the modified fixed value file includes the actual value of the second fixed value;

[0031] The control master station transmits the modified setting file to the relay protection device, and the relay protection device modifies the current first setting actual value to the second setting actual value.

[0032] The above-mentioned relay protection device is located in safety zone I, the set value setting calculation application module is located in safety zone III, the set value information query application module is located in the Internet area, the monitoring master station is located in safety zone II, the control master station is located in safety zone I, the set value advanced application module is located in safety zone III, and the handheld on-site calibration equipment is located in the external network.

[0033] The above-mentioned monitoring master station establishes a communication connection with the station-side zone II gateway located in the safety zone II, and obtains the device unique code, the current first fixed value hash value and the current fixed value file of the relay protection device through the station-side zone II gateway. The current fixed value file contains the fixed value model and the current first fixed value actual value information.

[0034] The above-mentioned control master station establishes a communication connection with the station-side zone I gateway located in the safety zone I, and communicates with the relay protection device through the station-side zone I gateway.

[0035] After adopting the above scheme, compared with the existing operation method, the present invention completes the entry of the unique code and the fixed hash value of the equipment by scanning the QR code. The automated method avoids the errors introduced by manual entry and improves the entry efficiency; only the fixed hash value needs to be checked to complete the verification, which greatly improves the verification efficiency; only the device information needs to be entered, and the system automatically obtains data from the network for comparison, avoiding manual verification with paper materials. The method and system described in the present invention reduce the operation complexity of on-site operation and maintenance personnel, reduce the manual intervention links, improve the reliability of on-site verification, shorten the on-site verification time, and achieve reliable and efficient on-site verification of the fixed value of the relay protection device. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is the overall principle diagram of the present invention;

[0037] Figure 2 This is a basic flow chart of relay protection setting reading and writing;

[0038] Figure 3 This is an example diagram of the basic process of releasing relay protection settings;

[0039] Figure 4 This is an example diagram of the basic process for on-site verification of relay protection settings. DETAILED DESCRIPTION

[0040] The technical solutions and beneficial effects of the present invention will be described in detail below with reference to the accompanying drawings.

[0041] The present invention provides a relay protection set value on-site verification system, including a handheld on-site verification device, a relay protection device, a station-side zone I gateway, a station-side zone II gateway, a control master station, a monitoring master station, a set value advanced application, a set value setting calculation application, and a set value information query application. The handheld on-site verification device supports a QR code scanning function, and obtains a device unique code and a set value hash value by scanning the QR code. The handheld on-site verification device supports a wireless communication function, and sends the device unique code to the set value information query application to obtain a set value hash value. The handheld on-site verification device compares the set value hash value, and the verification passes if the results are consistent, and fails if the results are inconsistent.

[0042] Among them, the relay protection device supports online reading of the device unique code, fixed value model, fixed value actual value and fixed value hash value, and supports the display of the device unique code and fixed value hash value in the form of QR code.

[0043] The fixed value setting calculation application reads the unique code of the relay protection device, the fixed value model and the fixed value actual value through the fixed value advanced application, the monitoring master station and the station-side II zone gateway in turn. After completing the fixed value calculation, the fixed value setting calculation application publishes the new fixed value actual value, fixed value hash value and device unique code to the fixed value advanced application, and publishes the fixed value hash value and device unique code to the fixed value information query application.

[0044] The advanced application of fixed value receives the unique device code, actual value and hash value of fixed value issued by the fixed value setting calculation application. The advanced application of fixed value modifies the fixed value by controlling the master station and the gateway of zone I of the station end in turn, and reads the hash value of fixed value by monitoring the master station and the gateway of zone II of the station end in turn for confirmation.

[0045] The fixed value information query application receives the device unique code and the fixed value hash value issued by the fixed value setting calculation application. The fixed value information query application responds to the query request of the handheld local calibration device, uses the device unique code as the query keyword, and returns the fixed value hash value as the query result to the handheld local calibration device.

[0046] The present invention also provides a method for on-site verification of relay protection settings based on the above-mentioned system, which can realize online reading and modification, publication, on-site verification, etc. of relay protection settings.

[0047] The online reading and modification process of relay protection setting includes the following steps:

[0048] The relay protection device sends the equipment unique code, setting value model, setting value actual value and setting value hash value to the gateway machine of zone II at the station end;

[0049] The gateway machine in zone II of the station sends the unique code of the equipment, the fixed value model, the actual value of the fixed value and the hash value of the fixed value to the monitoring master station;

[0050] The monitoring master station sends the device unique code, set value model, set value actual value and set value hash value to the set value advanced application through forward isolation;

[0051] The advanced setting application obtains the setting model, actual setting value and hash value information of the relay protection device, and maintains the setting data using the unique code of the device as the ID;

[0052] The advanced application of fixed value is isolated in reverse direction, and the command to modify the fixed value is sent to the station end by controlling the master station;

[0053] The gateway machine in zone I of the station end forwards the command to modify the setting value to the relay protection device;

[0054] The relay protection device completes the setting value modification operation and sends the setting value hash value to the gateway machine of zone II at the station end;

[0055] The gateway machine in zone II of the station sends the fixed value hash value to the monitoring master station;

[0056] The monitoring master station sends the fixed value hash value to the fixed value advanced application through forward isolation;

[0057] The fixed value advanced application obtains the fixed value hash value to modify the fixed value for confirmation.

[0058] The relay protection setting value release process includes the following steps:

[0059] The fixed value setting calculation application obtains the device unique code, fixed value model, fixed value actual value and fixed value hash value from the fixed value advanced application;

[0060] Fixed value setting calculation application performs fixed value calculation;

[0061] The fixed value setting calculation application publishes the device unique code, the actual value of the fixed value and the hash value of the fixed value to the fixed value advanced application, which serves as the data source for subsequent modification of the fixed value by the fixed value advanced application;

[0062] The fixed value setting calculation application publishes the device unique code and fixed value hash value to the fixed value information query application through forward isolation, which serves as the data source for subsequent on-site verification by the fixed value information query application.

[0063] The on-site verification process of relay protection setting includes the following steps:

[0064] The handheld on-site calibration equipment obtains the unique code and fixed hash value of the equipment by describing the QR code of the equipment;

[0065] The handheld on-site calibration device uses wireless communication to send a query request to the fixed value information query application through the firewall, and uses the device unique code as the keyword to query the fixed value hash value;

[0066] The fixed value information query application responds to the query request and returns the fixed value hash value to the handheld on-site verification device through the firewall;

[0067] The handheld on-site calibration device compares the fixed value hash value obtained by scanning the code with the fixed value hash value obtained from the fixed value information query application. If the results are consistent, the calibration passes; if the results are inconsistent, the calibration fails.

[0068] like Figure 1 As shown, it is a preferred embodiment of the present invention, wherein the relay protection device, the station-side zone I gateway and the control master station are located in the safety zone I, the station-side zone II gateway and the monitoring master station are located in the safety zone II, the set value advanced application and the set value setting calculation application are located in the safety zone III, the set value information query application is located in the Internet zone, and the handheld on-site calibration equipment is located in the external network.

[0069] Reverse isolation is set between the set value advanced application and the control master station, forward isolation is set between the set value advanced application and the monitoring master station, forward isolation is set between the set value setting calculation application and the set value information query application, and a firewall is set between the set value information query application and the handheld on-site calibration device.

[0070] The above-mentioned functional modules are deployed according to safety zones and safety measures are set, forming a complete on-site verification system for relay protection settings.

[0071] Combination Figure 2 The following figure illustrates the basic process of reading and writing relay protection settings.

[0072] The monitoring master station front-end located in the dispatching master station safety zone II uses the IEC61850 protocol to communicate with the station-side zone II gateway located in the substation safety zone II, and the station-side zone II gateway uses the IEC61850 protocol to communicate with the relay protection device. The relay protection setting value reading operation adopts the file method.

[0073] The monitoring master station obtains the device unique code and set value hash value of the relay protection device through the IEC61850 read model service. The monitoring master station obtains the current set value file of the relay protection device through the IEC61850 file service. The current set value file contains the set value model and the set value actual value information.

[0074] After the monitoring master station obtains the current setting file, device unique code and setting hash value, it transmits the relevant information to the setting advanced application through the forward isolation device. The setting advanced application has three uses after obtaining the relevant information: one is to obtain the device unique code and setting model information when first connected to the relay protection device; one is to read the actual value of the connected device setting; and one is to read the setting hash value of the connected device for modifying the setting reverse calibration or online calibration.

[0075] The control master station front-end located in the dispatching master station safety zone I communicates with the station-side zone I gateway located in the substation safety zone I using the IEC61850 protocol, and the station-side zone I gateway communicates with the relay protection device using the IEC61850 protocol. The relay protection setting modification operation adopts the file method.

[0076] The control master station transmits the modified setting file to the relay protection device through the IEC61850 file service, and triggers the modified setting through the IEC61850 remote control service.

[0077] The control master station is the execution end of the set value modification operation, which is triggered by the set value advanced application located in the safety zone III of the dispatch master station. The set value advanced application provides the modified set value file, and transmits the modified set value file to the control master station using the service that meets the reverse isolation safety requirements. After receiving the modified set value file, the control master station executes the subsequent modified set value operation.

[0078] Combination Figure 3 The following is an illustration of the basic process for publishing relay protection settings.

[0079] The fixed value setting calculation application is located in the safety zone III of the dispatching master station, and has no direct connection with the equipment in the safety zone I and safety zone II. It obtains the equipment unique code and the current fixed value file from the fixed value advanced application. The fixed value setting calculation application uses the current fixed value file as the fixed value model information, and on this basis, fills the setting calculation result into the actual value field to form a modified fixed value file, and calculates the actual value in the model order to obtain the fixed value hash value.

[0080] The fixed value setting calculation application sends the calculated fixed value hash value and the modified fixed value file to the given value advanced application for subsequent initiation of fixed value modification operations.

[0081] The fixed value setting calculation application sends the calculated fixed value hash value to the fixed value information query application in the Internet region through forward isolation. The fixed value information query application uses the device unique code as the search keyword to store the fixed value hash value for subsequent handheld on-site calibration equipment query.

[0082] Combination Figure 4 The following is an explanation of the basic process for on-site verification of relay protection settings.

[0083] According to the description of the set value reading, writing and publishing process, the process can ensure that the set value model inside the relay protection device is consistent with the set value model stored in other links in the system. Therefore, the relay protection set value calculates the set value hash value of the set value actual value in sequence according to the model order, which should be consistent with the set value hash value calculated by the set value setting calculation application.

[0084] The relay protection device provides a menu function to display the fixed value hash value on the LCD in the form of a QR code. At the same time, the device unique code is displayed in the form of a QR code through a name tag or LCD menu.

[0085] The handheld on-site calibration device needs to have QR code scanning and wireless communication functions. It can be a dedicated device or a mobile phone with dedicated application software installed. First, the handheld on-site calibration device scans the device's unique code, and the software prompts to scan the fixed value hash value. Then, the handheld on-site calibration device initiates a query request to the fixed value information query application through the firewall via wireless communication, and uses the device's unique code as the keyword to query the fixed value hash value. Then, the fixed value information query application responds to the query request and returns the fixed value hash value to the handheld on-site calibration device through the firewall. Finally, the handheld on-site calibration device compares the fixed value hash value obtained by scanning the code with the fixed value hash value obtained from the fixed value information query application. If the results are consistent, it indicates that the calibration has passed. If the results are inconsistent, it indicates that the calibration has failed.

[0086] In summary, the present invention provides a method and system for on-site calibration of relay protection settings, which reduces the operation complexity of on-site operation and maintenance personnel, reduces the manual intervention links, improves the reliability of on-site calibration, shortens the on-site calibration time, and achieves a reliable and efficient on-site calibration effect of relay protection device settings.

[0087] It will be appreciated by those skilled in the art that embodiments of the present invention may be provided as methods, systems, or computer program products. Therefore, the present invention may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the present invention may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program codes. The schemes in the embodiments of the present invention may be implemented in various computer languages, for example, object-oriented programming language Java and literal scripting language JavaScript, etc.

[0088] The present invention is described with reference to flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present invention. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0089] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0090] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 A step that specifies a function in one or more boxes.

[0091] Although the preferred embodiments of the present invention have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention.

[0092] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

[0093] The above embodiments are only for illustrating the technical idea of ​​the present invention, and cannot be used to limit the protection scope of the present invention. Any changes made on the basis of the technical solution in accordance with the technical idea proposed by the present invention shall fall within the protection scope of the present invention.

Claims

1. A method for checking relay protection setting on-site, characterized in that The steps include: Obtaining a device unique code, a set value model, and a current first set value actual value of the relay protection device, and performing a set value calculation to obtain a second set value actual value and a second set value hash value; Obtain the current first fixed value hash value, and if the first fixed value hash value is different from the second fixed value hash value, modify the first fixed value actual value of the relay protection device to the second fixed value actual value; During verification, the unique device code of the relay protection device, the current third fixed value hash value and the second fixed value hash value are obtained; the third fixed value hash value and the second fixed value hash value are compared, if the results are consistent, the verification passes, otherwise the verification fails.

2. The method for checking relay protection setting values ​​on-site according to claim 1, characterized in that: Obtaining a device unique code, a set value model, and a first set value actual value of the relay protection device, performing a set value calculation to obtain a second set value actual value and a second set value hash value, including: Obtaining a device unique code of the relay protection device, a current first set value hash value, and a current set value file, wherein the current set value file contains a set value model and current first set value actual value information; The second fixed value actual value is calculated based on the device unique code, the current first fixed value hash value and the current fixed value file, and the current fixed value file is used as the fixed value model information. On this basis, the second fixed value actual value is filled into the actual value field to form a modified fixed value file, and the second fixed value actual value is calculated in sequence according to the model order to obtain the second fixed value hash value.

3. The method for checking relay protection setting values ​​on-site according to claim 1, characterized in that: Modifying the first set value actual value of the relay protection device to the second set value actual value includes: Sending a fixed value modification file to trigger a fixed value modification operation; the fixed value modification file includes an actual value of the second fixed value; The modified setting file is obtained, and the relay protection device modifies the current first setting actual value to the second setting actual value.

4. A relay protection setting value on-site verification system, characterized in that: include: A fixed value setting calculation application module is used to obtain the equipment unique code, the fixed value model and the current first fixed value actual value of the relay protection device, and perform fixed value calculation to obtain the second fixed value actual value and the second fixed value hash value; It is also used to publish the device unique code, the second fixed value actual value and the second fixed value hash value to the fixed value advanced application module, and publish the device unique code and the second fixed value hash value to the fixed value information query application module; A fixed value advanced application module, used for obtaining the device unique code, fixed value model, current first fixed value actual value and current first fixed value hash value of the relay protection device through the monitoring master station, and if the first fixed value hash value is different from the second fixed value hash value, modifying the first fixed value actual value of the relay protection device to the second fixed value actual value through the control master station; A handheld on-site calibration device is used to scan the QR code of the relay protection device during calibration, obtain the device unique code of the relay protection device and the current third fixed value hash value, and send the device unique code to the fixed value information query application module to obtain the second fixed value hash value; It is also used to compare the third fixed-value hash value with the second fixed-value hash value. If the results are consistent, the verification passes, otherwise the verification fails.

5. The relay protection setting value local verification system according to claim 4, characterized in that: The fixed value setting calculation application module is used to obtain the device unique code, the fixed value model and the first fixed value actual value of the relay protection device, perform fixed value calculation to obtain the second fixed value actual value and the second fixed value hash value, including: The fixed value setting calculation application module obtains the device unique code of the relay protection device, the current first fixed value hash value and the current fixed value file, wherein the current fixed value file contains the fixed value model and the current first fixed value actual value information; The fixed value setting calculation application module sets and calculates the second fixed value actual value, and uses the current fixed value file as the fixed value model information. On this basis, the second fixed value actual value is filled into the actual value field to form a modified fixed value file, and the second fixed value actual value is calculated in sequence according to the model order to obtain the second fixed value hash value.

6. The relay protection setting local verification system according to claim 4, characterized in that: The fixed value advanced application module is used to obtain the device unique code, fixed value model, current first fixed value actual value and current first fixed value hash value of the relay protection device through the monitoring master station, including: The monitoring master station obtains the device unique code, the current first fixed value hash value and the current fixed value file of the relay protection device through the station-side II zone gateway, wherein the current fixed value file contains the fixed value model and the current first fixed value actual value information; The monitoring master station transmits the acquired information to the fixed value advanced application module.

7. The relay protection setting local calibration system according to claim 6, characterized in that: The monitoring master station obtains the equipment unique code and the current fixed value hash value of the relay protection device through the read model service of the communication protocol; The monitoring master station obtains the current setting file of the relay protection device through the file service of the communication protocol.

8. The relay protection setting local calibration system according to claim 4, characterized in that: The set value advanced application module modifies the first set value actual value of the relay protection device to the second set value actual value by controlling the main station, including: The fixed value advanced application module sends a modified fixed value file to the control master station to trigger a modified fixed value operation; the modified fixed value file includes the actual value of the second fixed value; The control master station transmits the modified setting file to the relay protection device, and the relay protection device modifies the current first setting actual value to the second setting actual value.

9. The relay protection setting local calibration system according to claim 4, characterized in that: The relay protection device is located in safety zone I, the set value setting calculation application module is located in safety zone III, the set value information query application module is located in the Internet area, the monitoring master station is located in safety zone II, the control master station is located in safety zone I, the set value advanced application module is located in safety zone III, and the handheld on-site calibration equipment is located in the external network.

10. The relay protection setting local calibration system according to claim 4, characterized in that: The monitoring master station establishes a communication connection with the station-side zone II gateway located in the safety zone II, and obtains the device unique code, the current first fixed value hash value and the current fixed value file of the relay protection device through the station-side zone II gateway. The current fixed value file contains the fixed value model and the current first fixed value actual value information.

11. The relay protection setting local calibration system according to claim 4, characterized in that: The control master station establishes a communication connection with the station-end zone I gateway located in safety zone I, and communicates with the relay protection device through the station-end zone I gateway.

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