A digital ring main unit edge computing on-site protection control system

Abstract

The application discloses a kind of digital ring network cabinet edge computing on-site protection control systems, comprising: digital sensing module, basic protection logic execution module, enhanced setting edge control module, enhanced setting simulation verification module and protection action checking module, based on the digital quantity sample value collected Load effective protection setting and execute basic protection logic, based on real-time power grid condition edge analysis Generate enhanced setting, and obtain enhanced setting sequence, set basic setting area and enhanced setting area Load effective protection setting and enhanced setting, finally by protection action checking module Basic protection action result and enhanced setting control logic are combined, protection outlet action is checked and confirmed, basic protection logic execution module is carried by independent hard real-time circuit, enhanced setting edge control module does not affect protection action, effectively improve the autonomy and reliability of distribution network ring network cabinet fault disposal.

Description

Technical Field

[0001] This invention relates to the field of power system distribution automation technology, and more specifically to a digital ring main unit edge computing local protection control system. Background Technology

[0002] With the digitalization of power distribution networks and the large-scale integration of distributed power sources, the demand for intelligent protection and control systems for ring main units (RNBs), as key nodes in power distribution networks, is increasing. Existing technologies have disclosed intelligent monitoring and self-healing control schemes for RNBs based on edge computing. For example, patent document CN122268008B discloses an intelligent monitoring and self-healing control method and system for RNBs based on edge computing, which performs self-healing control after time-delay compensation and alignment of multi-source data at the edge. Patent document CN120566709A discloses an event-driven intelligent RNB and its control method, which uses the voltage zero-crossing point as a timescale for spatiotemporal synchronization and generates protection and topology reconfiguration commands at the edge. Furthermore, the industry standard "Technical Specification for 12kV Digital Primary and Secondary Integrated Ring Main Units" specifies the architecture of local digitization of digital sensing units, digital main control units, and the FT3 protocol.

[0003] However, the aforementioned existing technologies all have the following shortcomings: First, the protection function and the edge intelligence function are coupled in the same computing environment. When the edge intelligence module fails, restarts, or is attacked, the basic protection function may also fail, failing to meet the high reliability requirements of local protection. Second, the generation and delivery of adaptive settings lack a security verification mechanism, and unqualified settings may be directly put into operation, posing a risk of false tripping or failure to trip. Third, performance degradation of the protection device (such as aging of the output circuit and drift of the sampling channel) is difficult to detect online and can usually only be detected through offline testing during power outage maintenance. Therefore, how to achieve safe adaptive updating of settings and online verification of protection performance while ensuring the independent reliability of the protection function is a technical problem that urgently needs to be solved in this field. Summary of the Invention

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides a digital ring main unit edge computing local protection control system to solve the problems existing in the background art.

[0005] This invention provides the following technical solution: a digital ring main unit edge computing local protection control system, comprising: a digital sensing module, a basic protection logic execution module, an enhanced setting edge control module, an enhanced setting simulation verification module, and a protection action verification module; The digital sensing module is deployed on the primary side of the ring main unit to collect the electrical quantities of the protected object locally and convert them into digital sample values ​​for output. The basic protection logic execution module loads valid protection settings based on the digital sampled values ​​output by the digital sensing module and executes the basic protection logic. The enhanced setpoint edge control module generates enhanced setpoints based on real-time power grid operating condition edge analysis and obtains an enhanced setpoint sequence. The enhanced setting simulation verification module performs shadow simulation verification based on the enhanced setting sequence. After the verification is passed, the enhanced setting is transmitted to the basic protection logic execution module. The protection action verification module compares the measured basic protection logic's judgment action delay and action boundary with the factory benchmark. When the deviation exceeds the set threshold, an alarm is triggered and the enhanced setting is blocked, returning to the effective protection setting.

[0006] Preferably, the specific contents of the digital sensing module are as follows: The ring main unit has built-in current transformers and voltage transformers. The digital sensing module collects the electrical quantities of the protected object through the built-in current transformers and voltage transformers. The electrical quantities include the output current value and output voltage value of the protected object. The output current value includes three-phase current and zero-sequence current, and the output voltage value includes three-phase voltage and zero-sequence voltage. The digital sensing module has a preset sampling rate of 64 points per cycle. After sampling is completed, the sampling results are converted into digital sample values ​​and packaged in FT3 format.

[0007] Preferably, the specific contents of the basic protection logic execution module are as follows: The digital sample value transmitted by the digital sensing module is received and loaded into an effective protection setting. The setting storage area in the basic protection logic execution module is divided into two areas, which include a basic setting area and an enhanced setting area. The specific details of loading valid protection settings based on digital sample values ​​and executing basic protection logic are as follows: The sampling rate is N=64 points per cycle, continuously fed in FT3 frames by the digital sensing module; The basic protection logic execution module performs frame quality verification: it verifies the continuity of the sampling counter. If the sampling counter is missing more than 3 frames, the link is broken. The link break handling rule is: the electrical quantities of the protected object collected by the built-in current transformer and voltage transformer are invalid, and the sampling and verification are performed again. If the sampling counter is missing 3 frames or less, the verification passes, the valid protection setting is loaded, and the basic protection logic is executed. The effective protection settings and basic protection logic are factory-fixed. The basic protection logic execution module is carried out by a hard real-time circuit independent of the enhanced setting edge control module. The digital sampled value is directly input to the basic protection logic execution module, which directly drives the protection output. Even when the enhanced setting edge control module fails, the basic protection logic is still executed according to the effective protection setting.

[0008] Preferably, the specific content of the enhanced fixed-value edge control module is as follows: The enhanced setpoint edge control module locally accesses the FT3 format digital sampled value output by the digital sensing module, and performs real-time power grid condition edge analysis at the edge of the ring main unit. The edge analysis output dynamically adjusts the candidate enhanced setpoint.

[0009] Preferably, the specific details of the dynamic adjustment of candidate enhancement values ​​in the edge analysis output are as follows: The data received from the enhanced setpoint edge control module is limited to data that can be collected during power grid operation, including: digital current and voltage sampling values ​​output by the digital sensing module, switch status values ​​of this cabinet and adjacent ring network cabinets, locally stored historical waveforms and load curves, and locally fixed primary system ledger parameters; The real-time power grid condition edge analysis performed at the edge of the ring main unit includes: data quality check, load fluctuation identification, and online short-circuit impedance estimation. Enhanced setting generation: Multiple candidate setting packages are generated based on the online short-circuit impedance estimation, and the candidate enhanced setting is output for dynamic adjustment.

[0010] Preferably, the specific contents of the enhanced fixed-value simulation verification module are as follows: The shadow simulation verification adopts an offline mirror replication of the complete protection criteria and dual-zone setting storage architecture of the basic protection logic execution module. It imports historical fault recording segments and superimposes the current real-time sampled data stream to simulate the protection action behavior after the candidate enhanced setting is put into use. When all verification items of the shadow simulation meet the preset safety margin conditions, the verification is deemed to have passed, and a digitally signed issued setting packet is generated and transmitted to the enhanced setting area of ​​the basic protection logic execution module through a one-way data gate. If any item of the shadow simulation verification does not meet the safety margin conditions, the current candidate enhanced setting is discarded, the original setting configuration is maintained, and an abnormal operating condition marker log is generated and stored locally.

[0011] Preferably, the specific content of the protection action verification module is as follows: The protection action verification module has a pre-stored factory baseline dataset, which includes the factory-calibrated baseline judgment action delay range and baseline action boundary threshold. It receives the measured judgment action delay and measured action boundary output by the virtual fault injection module and compares the measured parameters with the factory baseline dataset item by item. The time delay deviation and the action boundary deviation are calculated separately. The time delay deviation is the absolute value of the offset of the measured action delay relative to the reference action delay, and the action boundary deviation is the absolute value of the offset of the measured action boundary amplitude relative to the reference action boundary amplitude. The first preset threshold is the time delay allowable deviation threshold, and the second preset threshold is the boundary allowable deviation threshold. If the delay deviation exceeds the first set threshold, or the action boundary deviation exceeds the second set threshold, the overall deviation is determined to exceed the set threshold if either condition is met. At this time, the protection action verification module executes a triple processing logic: First, it outputs hardware alarm signals and local event alarm logs; second, it sends a blocking command to the enhanced setting edge control module to prevent the issuance of new enhanced settings; third, it sends a setting rollback command to the basic protection logic execution module to switch the effective protection settings from the enhanced setting area back to the factory-fixed effective protection settings in the basic setting area. If the delay deviation and the action boundary deviation do not exceed the corresponding set threshold, the protection performance is determined to be normal, the existing set value operation status is not interfered with, and the comparison result is recorded in the local performance ledger. The factory benchmark dataset of the protection action verification module is stored in the hardware write-protected storage area and cannot be modified remotely. Only the local authorized debugging interface is allowed to update the benchmark dataset.

[0012] The technical effects and advantages of this invention are as follows: This invention employs a dual-plane decoupled architecture consisting of a basic protection logic execution module and an enhanced setting edge control module. The protection function is carried out by an independent hard real-time circuit, with direct sampling and direct output, without relying on the edge intelligent module. This overcomes the defect of protection failure caused by intelligent side faults and improves the reliability and availability of protection. By directly generating enhanced setting sequences based on online short-circuit impedance estimation, the setting basis becomes a physical quantity that can be self-verified online, eliminating reliance on the master station and adapting to changes in power grid operation. Online measurement determines action delay and action boundaries and compares them with factory benchmarks, executing alarms, blocking enhanced settings, and reverting to basic settings, achieving early detection of protection performance degradation and providing a safety net. At the same time, the factory benchmark dataset and each set threshold are fixed in the hardware write protection area and cannot be remotely modified, effectively preventing misadjustment and malicious tampering, significantly improving the safety and reliability of the digital ring main unit's local protection control system. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of a digital ring main unit edge computing local protection control system. Detailed Implementation

[0014] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. In addition, the forms of the various structures described in the following embodiments are merely illustrative. The digital ring main unit edge computing local protection control system involved in the present invention is not limited to the structures described in the following embodiments. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0015] like Figure 1 As shown, the present invention provides a digital ring main unit edge computing local protection control system, including: a digital sensing module, a basic protection logic execution module, an enhanced setting edge control module, an enhanced setting simulation verification module, and a protection action verification module; The digital sensing module is deployed on the primary side of the ring main unit to collect the electrical quantities of the protected object locally and convert them into digital sample values ​​for output. The basic protection logic execution module loads valid protection settings based on the digital sample values ​​output by the digital sensing module and executes basic protection logic, and outputs the verified digital sample values ​​to the enhanced setting edge control module. The enhanced setpoint edge control module generates enhanced setpoints based on real-time power grid operating condition edge analysis and obtains an enhanced setpoint sequence. The enhanced setting simulation verification module performs shadow simulation verification based on the enhanced setting sequence. After the verification is passed, the optimal enhanced setting is transmitted to the basic protection logic execution module. The protection action verification module compares the measured basic protection logic's judgment action delay and action boundary with the factory benchmark. When the deviation exceeds the set threshold, an alarm is triggered and the enhanced setting is blocked, returning to the effective protection setting.

[0016] In this embodiment, it should be specifically explained that the digital sensing module contains the following details: The ring main unit has built-in current transformers and voltage transformers. The digital sensing module collects the electrical quantities of the protected object through the built-in current transformers and voltage transformers. The electrical quantities include the output current value and output voltage value of the protected object. The output current value includes three-phase current and zero-sequence current, and the output voltage value includes three-phase voltage and zero-sequence voltage. The digital sensing module has a preset sampling rate of 64 points per cycle. After sampling is completed, the sampling results are converted into digital sample values ​​and packaged in FT3 format.

[0017] In this embodiment, it should be specifically explained that the specific content of the basic protection logic execution module is as follows: The digital sample value transmitted by the digital sensing module is received and a valid protection setting is loaded. The setting storage area in the basic protection logic execution module is divided into two areas, including a basic setting area and an enhanced setting area. The basic setting area is factory-fixed and hardware write-protected (one-time programmable / latched Flash area), which cannot be remotely modified and contains conservative setting values. The enhanced setting area is a writable area, which can only be written to the signed setting packet through a one-way data gate. The specific details of loading valid protection settings based on digital sample values ​​and executing basic protection logic are as follows: The sampling rate is N=64 points per cycle, continuously fed in FT3 frames by the digital sensing module; The basic protection logic execution module performs frame quality verification: it verifies the continuity of the sampling counter. If the sampling counter is missing more than 3 frames, the link is broken. The link break handling rule is: the electrical quantities of the protected object collected by the built-in current transformer and voltage transformer are invalid, and the sampling and verification are performed again. If the sampling counter is missing 3 frames or less, the verification passes, the valid protection setting is loaded, and the basic protection logic is executed. The effective protection settings and basic protection logic are factory-fixed. The basic protection logic execution module is carried out by a hard real-time circuit independent of the enhanced setting edge control module. The digital sampled value is directly input to the basic protection logic execution module, which directly drives the protection output. Even when the enhanced setting edge control module fails, the basic protection logic is still executed according to the effective protection setting.

[0018] In this embodiment, it should be specifically explained that the details of the enhanced fixed-value edge control module are as follows: The enhanced setpoint edge control module locally accesses the FT3 format digital sampled value output by the digital sensing module, and performs real-time power grid condition edge analysis at the edge of the ring main unit. The edge analysis output dynamically adjusts the candidate enhanced setpoint.

[0019] In this embodiment, it should be specifically explained that the details of the dynamic adjustment of candidate enhancement values ​​in the edge analysis output are as follows: The data received from the enhanced setpoint edge control module is limited to data that can be collected during power grid operation, including: digital current and voltage sampling values ​​output by the digital sensing module, switch status values ​​of this cabinet and adjacent ring network cabinets, locally stored historical waveforms and load curves, and locally fixed primary system ledger parameters; The real-time power grid condition edge analysis performed at the edge of the ring main unit includes: data quality check, load fluctuation identification, and online short-circuit impedance estimation. Among them, the data quality check is to check whether the FT3 message is broken. If there is no broken link, it is normal; if there is a broken link, a warning message is output to the user terminal. Load fluctuation identification uses a sliding window to continuously monitor the change in current amplitude. In this embodiment, the current slowly rises from 305A to 312A from 13:58 to 14:00 (small slope, no sudden change, no harmonic anomaly). The classification result is qualified data, which is the voltage / current change collected during the normal fluctuation period. Online short-circuit impedance estimation: Short-circuit impedance is estimated online based on voltage / current changes collected during normal load fluctuations. During normal load fluctuations, the voltage change... and change in current Between satisfy ,in This represents the estimated short-circuit impedance value. Short-circuit impedance is estimated for each qualified disturbance pair. The specific process is as follows: For example, between 12:00 and 14:00, load fluctuation identification captured 4 qualified disturbance pairs (e.g., at 12:23, a factory started a motor: current change). The voltage change is +1.8A. -0.21kV (in kV, a multiple of the non-phase voltage)); Voltage and current are sinusoidal quantities, and in engineering they must be represented by complex numbers (amplitude + phase). The estimated short-circuit impedance obtained by dividing the two phasors is a complex number, and the specific calculation is as follows: make , ,calculate: ,in, This represents the projection of the phasor onto the real axis. This represents the projection of a phasor onto the imaginary axis, where j represents the imaginary unit. In mathematics, it's written as i, but in electrical engineering, to avoid confusion with the current i, it's replaced by j, satisfying... ; Calculate the short-circuit impedance estimate for each disturbance pair: ; An enhanced setpoint analysis is performed on the estimated short-circuit impedance of each disturbance pair, and the calculation formula is as follows: ,in, This represents the enhancement constant of the output. This represents the measured phase voltage of the busbar; Multiple candidate value packets are generated based on the enhanced value of the output for each perturbation pair, and the enhanced value sequence is output.

[0020] In this embodiment, it should be specifically explained that the specific content of the enhanced fixed-value simulation verification module is as follows: The shadow simulation verification adopts an offline mirror replication of the complete protection criteria and dual-zone setting value storage architecture of the basic protection logic execution module. It imports historical fault recording segments and superimposes the current real-time sampled data stream to simulate the protection action behavior after the candidate enhanced setting value is put into use. When all the shadow simulation verification items meet the preset safety margin conditions, the verification is determined to be passed, and a digitally signed issuance setting value packet is generated and transmitted to the enhanced setting value area of ​​the basic protection logic execution module through a one-way data gate. If there is more than one enhanced setting value, it is randomly determined according to the transmission sequence. If any item in the shadow simulation verification does not meet the safety margin conditions, the current candidate enhanced setting value is discarded, the original setting value configuration is maintained, and an abnormal operating condition marker log is generated and stored locally. In this embodiment, the verification of the candidate enhancement setting sequence is achieved using a shadow simulation verification method known in the art: the candidate enhancement setting is loaded into a simulation model consistent with the actual protection logic, and simulation verification is performed using locally stored historical waveform data. The verification is then determined based on the simulation results; only candidate enhancement settings that pass the verification can proceed to the subsequent activation process. The specific modeling and simulation methods for shadow simulation verification will not be elaborated here. The enhanced setting edge control module does not have the authority to directly rewrite the basic setting area. It can only perform setting write operations on the enhanced setting area. When it receives the interlocking command issued by the protection action verification module, it immediately stops generating and issuing enhanced settings.

[0021] In this embodiment, it should be specifically explained that the specific content of the protection action verification module is as follows: The protection action verification module has a pre-stored factory reference dataset, which includes the factory-fixed time delay allowable deviation threshold and boundary allowable deviation threshold. It receives the measured judgment action time delay and measured action boundary output by the enhanced setting simulation verification module and compares the measured parameters with the factory reference dataset item by item. Calculate the time delay deviation and the action boundary deviation respectively. The time delay deviation is the absolute value of the offset of the measured action delay relative to the reference action delay, and the action boundary deviation is the absolute value of the offset of the measured action boundary amplitude relative to the reference action boundary amplitude. The first set threshold is determined by combining a percentage of the factory-fixed allowable delay deviation threshold with the absolute delay lower limit. In this embodiment, the out-of-tolerance criterion is... ,in This indicates the measured delay in the action. The percentage of the baseline judgment action delay is adjustable within the range of 10% to 30%, and the absolute lower limit is adjustable within the range of 0.5 to 2ms. The second set threshold is adjusted according to 5% to 10% of the factory-fixed boundary allowable deviation threshold baseline boundary value, and in this embodiment, it is taken as 8%. If the delay deviation exceeds the first set threshold, or the action boundary deviation exceeds the second set threshold, the overall deviation is determined to exceed the set threshold if either condition is met. At this time, the protection action verification module executes a triple processing logic: First, it outputs hardware alarm signals and local event alarm logs; second, it sends a blocking command to the enhanced setting edge control module to prevent the issuance of new enhanced settings; third, it sends a setting rollback command to the basic protection logic execution module to switch the effective protection settings from the enhanced setting area back to the factory-fixed effective protection settings in the basic setting area. If the delay deviation and the action boundary deviation do not exceed the corresponding set threshold, the protection performance is determined to be normal, the existing set value operation status is not interfered with, and the comparison result is recorded in the local performance ledger. The factory benchmark dataset of the protection action verification module is stored in the hardware write-protected storage area and cannot be modified remotely. Only the local authorized debugging interface is allowed to update the benchmark dataset.

[0022] In this embodiment, it should be specifically noted that the main difference between this embodiment and the prior art is that this embodiment uses a dual-plane decoupled architecture with a basic protection logic execution module and an enhanced setting edge control module. The protection function is carried by an independent hard real-time circuit, with direct sampling and direct output, without relying on the edge intelligent module. This overcomes the defect of protection failure caused by intelligent side faults and improves the reliability and availability of protection. By directly generating enhanced setting sequences based on online short-circuit impedance estimation, the setting basis becomes a physical quantity that can be self-verified online, eliminating reliance on the master station and adapting to changes in power grid operation. Online measurement determines action delay and action boundaries and compares them with factory benchmarks, executing alarms, blocking enhanced settings, and reverting to basic settings, achieving early detection of protection performance degradation and providing a safety net. At the same time, the factory benchmark dataset and each set threshold are fixed in the hardware write protection area and cannot be remotely modified, effectively preventing misadjustment and malicious tampering, significantly improving the safety and reliability of the digital ring main unit's local protection control system.

[0023] In conclusion, the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

[0024] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application.

Claims

1. A digital ring main unit edge computing local protection control system, characterized in that: include: The system includes a digital sensing module, a basic protection logic execution module, an enhanced setting edge control module, an enhanced setting simulation verification module, and a protection action verification module. The digital sensing module is deployed on the primary side of the ring main unit to collect the electrical quantities of the protected object locally and convert them into digital sample values ​​for output. The basic protection logic execution module loads valid protection settings based on the digital sampled values ​​output by the digital sensing module and executes the basic protection logic. The enhanced setpoint edge control module generates enhanced setpoints based on real-time power grid operating condition edge analysis and obtains an enhanced setpoint sequence. The enhanced setting simulation verification module performs shadow simulation verification based on the enhanced setting sequence. After the verification is passed, the enhanced setting is transmitted to the basic protection logic execution module. The protection action verification module compares the measured basic protection logic's judgment action delay and action boundary with the factory benchmark. When the deviation exceeds the set threshold, an alarm is triggered and the enhanced setting is blocked, returning to the effective protection setting.

2. The digital ring main unit edge computing local protection control system according to claim 1, characterized in that: The specific details of the digital sensing module are as follows: The ring main unit has built-in current transformers and voltage transformers. The digital sensing module collects the electrical quantities of the protected object through the built-in current transformers and voltage transformers. The electrical quantities include the output current value and output voltage value of the protected object. The output current value includes three-phase current and zero-sequence current, and the output voltage value includes three-phase voltage and zero-sequence voltage. The digital sensing module has a preset sampling rate of 64 points per cycle. After sampling is completed, the sampling results are converted into digital sample values ​​and packaged in FT3 format.

3. The digital ring main unit edge computing local protection control system according to claim 1, characterized in that: The specific contents of the basic protection logic execution module are as follows: The digital sample value transmitted by the digital sensing module is received and loaded into an effective protection setting. The setting storage area in the basic protection logic execution module is divided into two areas, which include a basic setting area and an enhanced setting area. The specific details of loading valid protection settings based on digital sample values ​​and executing basic protection logic are as follows: The sampling rate is N=64 points per cycle, continuously fed in FT3 frames by the digital sensing module; The basic protection logic execution module performs frame quality verification: it verifies the continuity of the sampling counter. If the sampling counter is missing more than 3 frames, the link is broken. The link break handling rule is: the electrical quantities of the protected object collected by the built-in current transformer and voltage transformer are invalid, and the sampling and verification are performed again. If the sampling counter is missing 3 frames or less, the verification passes, the valid protection setting is loaded, and the basic protection logic is executed. The effective protection settings and basic protection logic are factory-fixed. The basic protection logic execution module is carried out by a hard real-time circuit independent of the enhanced setting edge control module. The digital sampled value is directly input to the basic protection logic execution module, which directly drives the protection output. Even when the enhanced setting edge control module fails, the basic protection logic is still executed according to the effective protection setting.

4. The digital ring main unit edge computing local protection control system according to claim 1, characterized in that: The specific details of the enhanced fixed-value edge control module are as follows: The enhanced setpoint edge control module locally accesses the FT3 format digital sampled value output by the digital sensing module, and performs real-time power grid condition edge analysis at the edge of the ring main unit. The edge analysis output dynamically adjusts the candidate enhanced setpoint.

5. The digital ring main unit edge computing local protection control system according to claim 4, characterized in that: The specific details of dynamically adjusting candidate enhancement values ​​in the edge analysis output are as follows: The data received from the enhanced setpoint edge control module is limited to data that can be collected during power grid operation, including: digital current and voltage sampling values ​​output by the digital sensing module, switch status values ​​of this cabinet and adjacent ring network cabinets, locally stored historical waveforms and load curves, and locally fixed primary system ledger parameters; The real-time power grid condition edge analysis performed at the edge of the ring main unit includes: data quality check, load fluctuation identification, and online short-circuit impedance estimation. Enhanced setting generation: Multiple candidate setting packages are generated based on the online short-circuit impedance estimation, and the candidate enhanced setting is output for dynamic adjustment.

6. The digital ring main unit edge computing local protection control system according to claim 1, characterized in that: The specific contents of the enhanced fixed-value simulation verification module are as follows: The shadow simulation verification adopts an offline mirror replication of the complete protection criteria and dual-zone setting storage architecture of the basic protection logic execution module. It imports historical fault recording segments and superimposes the current real-time sampled data stream to simulate the protection action behavior after the candidate enhanced setting is put into use. When all verification items of the shadow simulation meet the preset safety margin conditions, the verification is deemed to have passed, and a digitally signed issued setting packet is generated and transmitted to the enhanced setting area of ​​the basic protection logic execution module through a one-way data gate. If any item of the shadow simulation verification does not meet the safety margin conditions, the current candidate enhanced setting is discarded, the original setting configuration is maintained, and an abnormal operating condition marker log is generated and stored locally.

7. The digital ring main unit edge computing local protection control system according to claim 1, characterized in that: The specific contents of the protection action verification module are as follows: The protection action verification module has a pre-stored factory baseline dataset, which includes the factory-calibrated baseline judgment action delay range and baseline action boundary threshold. It receives the measured judgment action delay and measured action boundary output by the virtual fault injection module and compares the measured parameters with the factory baseline dataset item by item. Calculate the time delay deviation and the action boundary deviation respectively. The time delay deviation is the absolute value of the offset of the measured action delay relative to the reference action delay, and the action boundary deviation is the absolute value of the offset of the measured action boundary amplitude relative to the reference action boundary amplitude. The first preset threshold is the time delay allowable deviation threshold, and the second preset threshold is the boundary allowable deviation threshold; When the delay deviation exceeds the first set threshold, or the action boundary deviation exceeds the second set threshold, the overall deviation is determined to exceed the set threshold if either condition is met. At this time, the protection action verification module executes a triple processing logic: First, it outputs hardware alarm signals and local event alarm logs; Second, it sends a blocking command to the enhanced setting edge control module to prevent the issuance of new enhanced settings. Third, a setting rollback instruction is sent to the basic protection logic execution module to switch the effective protection setting from the enhanced setting area back to the factory-fixed effective protection setting in the basic setting area; If the delay deviation and the action boundary deviation do not exceed the corresponding set threshold, the protection performance is determined to be normal, the existing set value operation status is not interfered with, and the comparison result is recorded in the local performance ledger. The factory benchmark dataset of the protection action verification module is stored in the hardware write-protected storage area and cannot be modified remotely. Only the local authorized debugging interface is allowed to update the benchmark dataset.

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