Construction method of novel power system standard system

Abstract

The invention discloses a construction method of a novel electric power system standard system, and relates to the technical field of novel electric power systems.According to the construction method of the novel electric power system standard system, a top layer framework of the novel electric power system standard system is constructed, and the top layer framework of the novel electric power system standard system is evaluated based on multi-dimensional dynamic utility; whether the top framework of the novel power system standard system is qualified or not is judged, on the basis of the framework of the novel power system standard system, a linkage mechanism of science and technology standards and industries is built, self-adaptive adjustment is conducted on the linkage mechanism according to international standards, a dynamic updating channel is built to conduct pilot verification on technical achievements, and the technical achievements are verified. Meanwhile, a standard deviation threshold value is set, and the technical standard is updated. According to the invention, the problems of static lag, technology and standard disjunction and single utility evaluation dimension of a traditional power system standard system are solved.

Description

Technical Field

[0001] This application relates to the field of new power system technology, specifically to a method for constructing a new power system standard system. Background Technology

[0002] Currently, promoting the interactive development of standardization and technological innovation has become a major issue of key concern and urgent need for resolution in national development and industrial upgrading. The technical standard system for new power systems is still in its early stages, and there is a lack of scientific evaluation methods for its effectiveness. To ensure a balanced approach between the standard system and the technical system, and to meet the requirements of promoting technological innovation, scientific theories and methods are needed. This application proposes a set of effectiveness evaluation systems based on a hierarchical and categorized approach to constructing a technical standard system for new power systems. It establishes quantitative evaluation indicators and designs evaluation methods to actively promote the construction of the technical standard system for new power systems.

[0003] Existing technologies, such as the invention application patent with announcement number CN116362610A, disclose a novel power system standard system construction method based on the physics-principle-human principle system methodology. This method follows the standard system construction steps of "understanding the intent → investigating the current situation → clarifying the objectives → forming a framework → compiling the system → coordinating relationships → soliciting opinions → maintaining and updating." By comprehensively considering the physics, principle, and human principle in the construction of the new power system, it obtains an objective and reasonable standard system. This avoids repetitive thinking in the traditional standard system construction process and solves the problem of traditional methods struggling to handle large-scale evaluation objects. It possesses the advantages of being replicable and scalable, laying a solid foundation for the advancement of national standardization work.

[0004] Existing technologies, such as the invention patent application with publication number CN119359103A, disclose a novel method and system for evaluating the effectiveness of constructing a technical standard system for power systems. This method includes the following steps: obtaining the requirements of the new power system for technical standards as evaluation indicators to obtain a set of evaluation factors; determining a set of evaluation comments based on the evaluation criteria for each evaluation indicator; determining the weights of each evaluation indicator using the analytic hierarchy process (AHP); conducting an actual evaluation of the new power system and determining the fuzzy relationship matrix between the set of evaluation factors and the set of evaluation comments based on the actual evaluation results; calculating the weight vector and the fuzzy comprehensive evaluation matrix using fuzzy multiplication operations to obtain the fuzzy evaluation matrix; assigning evaluation levels and calculating the final score of the new power system using a weighted average method; and evaluating the effectiveness of constructing the technical standard system for the new power system based on the score. Compared with existing technologies, this invention integrates multiple methods for evaluation, making the evaluation results more comprehensive and objective.

[0005] The above-mentioned solutions have the following technical problems: 1. The method for constructing a new power system standard system provided in this application constructs a top-level framework for the new power system standard system and evaluates this framework based on multi-dimensional dynamic utility to determine its qualification. Based on this framework, a linkage mechanism between science and technology, technical standards, and industry is established. This mechanism is adaptively adjusted according to international standards, and a dynamic update channel is established for pilot verification of technological achievements. Simultaneously, a standard deviation threshold is set to update the technical standards. This application solves the problems of static lag, disconnect between science and technology and standards, and single-dimensional utility evaluation in traditional power system standard systems.

[0006] 2. The current technology lacks an effective dynamic evaluation mechanism, which makes it impossible to optimize the standard system in a timely manner based on technological development and actual application, resulting in low actual usability of the new power system.

[0007] 3. Current carbon emission reduction technologies for the power industry, such as carbon capture and storage, carbon dioxide monitoring, and green hydrogen co-firing, lack evaluation standards. The standard system for key equipment such as high-voltage flexible DC transmission equipment and megawatt-level energy storage systems is incomplete, which in turn affects the transformation of technological achievements and market promotion. Summary of the Invention

[0008] The purpose of this application is to provide a new method for constructing a power system standard system, which solves the problems existing in the background technology.

[0009] To solve the above-mentioned technical problems, this application adopts the following technical solution: This application provides a method for constructing a new power system standard system, including: Step 1, constructing a top-level framework of the new power system standard system, and evaluating the top-level framework of the new power system standard system based on multi-dimensional dynamic utility to determine whether the top-level framework of the new power system standard system is qualified.

[0010] Step 2: Based on the framework of the new power system standard system, establish a linkage mechanism between science and technology, technical standards and industry, and adaptively adjust the linkage mechanism according to international standards.

[0011] Step 3: Establish a dynamic update channel to conduct pilot verification of technological achievements, set standard deviation thresholds, and update technical standards.

[0012] The beneficial effects of this application are as follows: 1. This application focuses on the interactive development of scientific research and technical standards from the perspective of new quality productivity, and based on the practical exploration experience of scientific research and technical standards in the power industry, it proposes a brand-new interactive development model of scientific research and technical standards, providing enterprises with scientific and practical methods and paths for promoting the interactive development of scientific research and technical standards.

[0013] 2. This application integrates four dimensions: technology adaptability, economic benefits, carbon footprint, and international compatibility. It adopts the analytic hierarchy process and fuzzy comprehensive evaluation method to achieve quantitative assessment, thus ensuring the rationality and practicality of the standard system. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a flowchart illustrating the implementation steps of the method described in this application. Detailed Implementation

[0016] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0017] Reference Figure 1 As shown, this application provides a method for constructing a new power system standard system, including the following steps: Step 1: Construct the top-level framework of the new power system standard system, and evaluate the top-level framework of the new power system standard system based on multi-dimensional dynamic utility to determine whether the top-level framework of the new power system standard system is qualified.

[0018] In a specific example, the top-level framework for constructing a new power system standard system is constructed as follows: S1. Formulate grid connection technology standards for new energy power generation and clarify the voltage range, frequency response speed and low voltage penetration capability of relevant new energy power generation equipment. The specific parameters are: voltage range is ± rated voltage, frequency response speed is ≤0.5 seconds, and low voltage penetration time is ≥150 milliseconds.

[0019] It should be noted that new energy power generation includes wind power, photovoltaic power, and hydrogen energy, among other new energy power generation methods.

[0020] S2. The insulation level of UHV lines is specified as follows: the lightning impulse withstand voltage at the 1000KV voltage level is ≥2400KV, the current withstand value of the flexible DC converter valve is ≥5000A, and the fault tolerance rate of the smart distribution network is ≥99.9%.

[0021] S3. Formulate demand response standards for new energy power in the industry and clarify the triggering conditions and response time for new energy power load regulation.

[0022] It should be noted that the industrial segment includes industrial users, commercial users, and residential users. The triggering conditions and response time for the regulation of renewable energy power load are set according to the power consumption of the industrial segment. For example, the triggering condition for the regulation of renewable energy power load for industrial users is set to the grid load rate, and the response time is ≤15 minutes. No specific restrictions are imposed here.

[0023] S4. Establish safe operation standards for energy storage equipment, specifying that the charge-discharge cycle life of energy storage batteries is ≥10,000 times and the temperature control range is -20℃ to 50℃.

[0024] S5. Develop standards for carbon footprint accounting, green electricity certification, and carbon emission reduction accounting, and clarify the boundaries of carbon footprint accounting and methods for verifying the additionality of green electricity.

[0025] S6. Define the communication protocol, data interface and security encryption standards for the power Internet of Things, stipulate that the data transmission delay is ≤100 milliseconds, and adopt the SM4 national cryptographic algorithm as the encryption algorithm.

[0026] In a specific example, the defined communication protocol, data interface, and security encryption standards for the power Internet of Things also include the construction of a digital standard twin platform, which comprises a data acquisition layer, a twin modeling layer, a standard verification layer, and an early warning push layer.

[0027] It should be noted that the data acquisition layer is deployed in substations and new energy power plants in the pilot area, using edge computing gateways to collect equipment operation data, environmental data, and transaction data, with a data sampling frequency of no less than once per second; the twin modeling layer is a 1:1 digital twin of the physical power system built on the Unity3D engine, including equipment models (such as wind turbines and photovoltaic inverters, energy storage batteries, etc.), network models (such as transmission lines and distribution network topology, etc.), and scenario models (such as extreme weather and load fluctuation scenarios, etc.); the standard verification layer has built-in standard clauses, comparing the collected real-time data with the thresholds in the standard clauses. For example, the actual temperature of the energy storage battery is compared with the standard-specified range of -20℃ to 50℃. If the actual temperature exceeds the range for 5 consecutive minutes, it is judged as a standard execution deviation; the early warning push layer generates different levels of early warning information according to the deviation level (such as general deviation: deviation rate 5%-10%; severe deviation: deviation rate >10%). General deviations are pushed to alliance members via platform messages, while severe deviations are pushed to core experts of the alliance via SMS and email. In addition, it supports historical data retrospective analysis, allowing users to query standard implementation deviation records within any time period, providing data support for standard revision; through the digital standard twin platform, it enables real-time monitoring and dynamic verification of standard implementation, shortening the standard deviation discovery time from traditional monthly manual investigation to minute-level automatic identification, thus improving the efficiency of standard implementation supervision.

[0028] In a specific example, the top-level framework of the new power system standard system is evaluated based on multi-dimensional dynamic utility. The specific steps are as follows: A1. First, the evaluation index system is determined, which includes primary indicators and secondary indicators. The primary indicators include technology adaptability, economic benefits, carbon footprint and international compatibility. The secondary indicators include secondary indicators of technology adaptability, economic benefits, carbon footprint and international compatibility.

[0029] It should be noted that the secondary indicators of technical compatibility include the penetration rate of new energy sources, voltage qualification rate, and equipment compatibility; the secondary indicators of economic benefits include the reduction rate of grid losses and the cost-effectiveness of standard implementation; the secondary indicators of carbon footprint include the accuracy rate of green electricity certification and the deviation rate of carbon emission reduction calculation; and the secondary indicators of international compatibility include the conversion rate of international standards and the standard adaptation rate of overseas projects.

[0030] It should be noted that the target values ​​are as follows: new energy penetration rate ≥ 50%, voltage qualification rate ≥ 99.98%, equipment compatibility ≥ 95%, grid loss reduction rate ≥ 15%, standard implementation cost-benefit ratio ≥ 1.2, green electricity certification accuracy rate ≥ 98%, carbon emission reduction calculation deviation rate ≤ 2%; international standard conversion rate ≥ 10% / year, and overseas project standard adaptation rate ≥ 80%.

[0031] A2. The weights of each indicator are determined by the analytic hierarchy process, and then the fuzzy comprehensive evaluation method is used to conduct quantitative evaluation and construct a set of comments. Finally, the comprehensive score of the top-level framework of the new power system standard system is obtained by weighted average calculation.

[0032] It should be noted that the weights of each indicator were determined using the analytic hierarchy process (AHP), and then a fuzzy comprehensive evaluation method was used for quantitative assessment to construct a set of evaluation criteria. Specifically, 15-20 power experts covering fields such as standard setting, power grid operation, and scientific research were invited to conduct pairwise comparisons and scoring, thereby constructing a judgment matrix. The weights for technology adaptability (0.35), economic benefits (0.25), carbon footprint (0.25), and international compatibility (0.15) were calculated. Then, the fuzzy comprehensive evaluation method was used for quantitative assessment to construct a set of evaluation criteria {Excellent (90-100 points), Good (80-89 points), Satisfactory (70-79 points), Unsatisfactory (<70 points)}. Real-time data from the pilot project was collected through a digital standard twin platform, and the membership degree of each indicator to the evaluation criteria was determined by combining the expert scores. For example, the membership degree of new energy penetration rate to "Excellent" was 0.7, and the membership degree to "Good" was 0.3, etc. The above is only an illustrative example and not the only instance.

[0033] In a specific example, the process for determining whether the top-level framework of the new power system standard system is qualified is as follows: The comprehensive score of the top-level framework of the new power system standard system is compared with the set segment intervals. If the top-level framework of the new power system standard system belongs to the set excellent segment interval, it is recorded as excellent; if it belongs to the set good segment interval, it is recorded as good; if it belongs to the set qualified segment interval, it is recorded as qualified; if it belongs to the set unqualified segment interval, it is recorded as unqualified.

[0034] It should be noted that the segment intervals are set by the relevant staff themselves, and no specific restrictions are imposed here.

[0035] It should also be noted that when the top-level framework scores excellent, no revision is required; when the top-level framework scores good or satisfactory, the standard clauses corresponding to several indicators should be optimized in a targeted manner; when the top-level framework scores unsatisfactory, the top-level framework design should be reviewed.

[0036] This application realizes the dynamic quantification of the effectiveness of the standard system, avoids the deviation in the direction of standard optimization caused by one-sided evaluation, and improves the global adaptability of the standard system.

[0037] In a specific example, the evaluation steps for multi-dimensional dynamic utility also include AI-driven evaluation optimization, the specific process of which is as follows: based on deep learning algorithms, historical evaluation data is trained to establish a correlation model of evaluation indicators, standard clauses, and industry effects; when new evaluation data is collected, the model can automatically predict the effects of different standard revision schemes, providing data support for expert decision-making; at the same time, redundant items in the evaluation indicators are identified through the correlation model.

[0038] It should be noted that redundant items in the evaluation indicators, such as two indicators with a correlation of ≥0.9, for example, if the correlation between the new energy penetration rate and the green electricity trading volume is found to be 0.92 through relevant model analysis, it is recommended to merge the green electricity trading volume into a sub-indicator of the new energy penetration rate to simplify the evaluation system.

[0039] It should be noted that the deep learning algorithm mentioned is an existing model technology, so it will not be described in detail here.

[0040] Step 2: Based on the framework of the new power system standard system, establish a linkage mechanism between science and technology, technical standards and industry, and adaptively adjust the linkage mechanism according to international standards.

[0041] In a specific example, the establishment of a linkage mechanism between science and technology, technical standards, and industry based on the framework of the new power system standard system is carried out as follows: The linkage mechanism is a full-chain standard covering power generation, transmission, trading, and accounting, specifically including: Power generation standards: clarifying the technical requirements for power generation equipment and specifying additionality verification methods; Transmission standards: formulating design standards and power quality standards for dedicated green electricity transmission channels, and clarifying the physical isolation technical requirements between green electricity and conventional electricity; Trading standards: specifying the participating entities, trading processes, and contract terms for green electricity trading; Accounting standards: formulating methods for calculating carbon emission reductions from green electricity and clarifying the accounting boundaries.

[0042] For example, for the generation end standard: the wind energy utilization coefficient of wind turbines is set to be ≥0.45, and the conversion efficiency of photovoltaic modules is set to be ≥23%, etc. At the same time, the baseline scenario method is used to compare the regional carbon emission levels before and after the project is put into operation to prove the incremental attribute of green electricity; for the transmission end standard, the line loss rate is set to ≤3%, and the harmonic content is set to ≤5%, etc.; for the accounting end standard, the emission difference subtraction method is used, that is, (conventional thermal power carbon emission coefficient - green electricity carbon emission coefficient) * green electricity, to calculate the carbon emission of green electricity, and the accounting boundary is clearly defined as the generation end to the user end, excluding the transmission link, etc.

[0043] In a specific example, the adaptive adjustment of the linkage mechanism according to international standards is carried out as follows: B1, establish an international standard tracking database, covering power standards issued by international organizations. The database is updated once a month, automatically capturing and storing information on the addition, revision and repeal of international standards.

[0044] B2. Conduct international benchmarking analysis. Every six months, organize international standardization experts within the alliance to compare differences in key standard clauses and generate an "International Benchmarking Analysis Report".

[0045] B3. Develop an adaptive adjustment plan. If the differences do not affect international compatibility, the standard shall remain unchanged; if the differences affect equipment exports or power trading, the standard shall be revised and the corresponding clauses adjusted to adapt to international rules.

[0046] It should be noted that the international organizations mentioned include IEC, ISO, and CIGRE, among others.

[0047] Step 3: Establish a dynamic update channel to conduct pilot verification of technological achievements, set standard deviation thresholds, and update technical standards.

[0048] In a specific example, the process of establishing a dynamic update channel to pilot and verify the technological achievement is as follows: select at least a number of different types of pilot projects to conduct pilot projects in various pilot areas, and deploy edge computing nodes in each pilot area to collect the operation data of power equipment in each preset period.

[0049] It should be noted that the pilot projects include urban smart grids, near-zero carbon industrial parks, and microgrids in remote areas; power equipment operation data includes fluctuations in new energy power generation output and energy storage charging and discharging efficiency.

[0050] In a specific example, the process of setting a standard deviation threshold and updating the technical standard is as follows: the operating data of the power equipment collected in each preset period is compared with the corresponding rated data to obtain the operating data deviation of the power equipment in each preset period. The operating deviation of the power equipment in each preset period is compared with the corresponding data deviation threshold. When a certain power equipment data exceeds the corresponding deviation threshold, it is revised accordingly, and the revised standard is re-tested on a pilot basis.

[0051] It should be noted that the operating data of power equipment includes, but is not limited to, fluctuations in the output of new energy power generation and the charging and discharging efficiency of energy storage.

[0052] It should also be noted that the rated data are the data values ​​set in the new power standard system, while the deviation threshold is set by the relevant staff themselves, and no specific restrictions are imposed here.

[0053] This application provides a method for constructing a novel power system standard system. It establishes a top-level framework for this system and evaluates it based on multi-dimensional dynamic utility to determine its suitability. Building upon this framework, a linkage mechanism between science and technology, technical standards, and industry is established. This mechanism is adaptively adjusted according to international standards, and a dynamic update channel is established for pilot verification of technological achievements. Simultaneously, a standard deviation threshold is set to update technical standards. This application addresses the problems of static lag, disconnect between science and technology and standards, and a single dimension of utility evaluation in traditional power system standard systems.

[0054] The above content is merely an example and illustration of the concept of this application. Those skilled in the art can make various modifications or additions to the specific embodiments described or use similar methods to replace them, as long as they do not deviate from the inventive concept or exceed the scope defined in this application, they should all fall within the protection scope of this application.

Claims

1. A method for constructing a new power system standard system, characterized in that, include: Step 1: Construct the top-level framework of the new power system standard system, and evaluate the top-level framework of the new power system standard system based on multi-dimensional dynamic utility to determine whether the top-level framework of the new power system standard system is qualified. Step 2: Based on the framework of the new power system standard system, establish a linkage mechanism between science and technology, technical standards and industry, and adaptively adjust the linkage mechanism according to international standards; Step 3: Establish a dynamic update channel to conduct pilot verification of technological achievements, set standard deviation thresholds, and update technical standards.

2. The method for constructing a novel power system standard system according to claim 1, characterized in that, The specific process for constructing the top-level framework of the new power system standard system is as follows: S1. Formulate grid connection technical standards for new energy power generation, and clarify the voltage range, frequency response speed and low voltage penetration capability of relevant new energy power generation equipment. The specific parameters are: voltage range ± rated voltage, frequency response speed ≤ 0.5 seconds, and low voltage penetration time ≥ 150 milliseconds. S2. The insulation level of UHV lines is specified as follows: the lightning impulse withstand voltage at the 1000KV voltage level is ≥2400KV, the current withstand value of the flexible DC converter valve is ≥5000A, and the fault tolerance rate of the smart distribution network is ≥99.9%. S3. Formulate demand response standards for new energy power in the industry and clarify the triggering conditions and response time for new energy power load regulation; S4. Establish safe operation standards for energy storage equipment, specifying that the charge-discharge cycle life of energy storage batteries is ≥10,000 times and the temperature control range is -20℃ to 50℃. S5. Develop standards for carbon footprint accounting, green electricity certification, and carbon emission reduction accounting, and clarify the boundaries of carbon footprint accounting and methods for verifying the additionality of green electricity. S6. Define the communication protocol, data interface and security encryption standards for the power Internet of Things, stipulate that the data transmission delay is ≤100 milliseconds, and adopt the SM4 national cryptographic algorithm as the encryption algorithm.

3. The method for constructing a novel power system standard system according to claim 2, characterized in that, The document defines the communication protocols, data interfaces, and security encryption standards for the power Internet of Things, and also includes the construction of a digital standard twin platform, which comprises a data acquisition layer, a twin modeling layer, a standard verification layer, and an early warning push layer.

4. The method for constructing a novel power system standard system according to claim 3, characterized in that, The evaluation of the top-level framework of the new power system standard system based on multi-dimensional dynamic utility is carried out, and the specific steps are as follows: A1. First, determine the evaluation indicator system, which includes primary indicators and secondary indicators. The primary indicators include technology adaptability, economic benefits, carbon footprint, and international compatibility. The secondary indicators include secondary indicators for technology adaptability, economic benefits, carbon footprint, and international compatibility. A2. The weights of each indicator are determined by the analytic hierarchy process, and then the fuzzy comprehensive evaluation method is used to conduct quantitative evaluation and construct a set of comments. Finally, the comprehensive score of the top-level framework of the new power system standard system is obtained by weighted average calculation.

5. The method for constructing a novel power system standard system according to claim 4, characterized in that, The specific judgment process for determining whether the top-level framework of the new power system standard system is qualified is as follows: The comprehensive score of the top-level framework of the new power system standard system is compared with the set segment intervals. If the top-level framework of the new power system standard system belongs to the set excellent segment interval, it is recorded as excellent; if it belongs to the set good segment interval, it is recorded as good; if it belongs to the set qualified segment interval, it is recorded as qualified; if it belongs to the set unqualified segment interval, it is recorded as unqualified.

6. The method for constructing a novel power system standard system according to claim 5, characterized in that, The evaluation steps for the multi-dimensional dynamic utility also include AI-driven evaluation optimization, the specific process of which is as follows: Based on deep learning algorithms, historical evaluation data is trained to establish a correlation model between evaluation indicators, standard clauses, and industry effects. When new evaluation data is collected, the model can automatically predict the effects of different standard revision schemes, providing data support for expert decision-making. At the same time, redundant items in the evaluation indicators are identified through the correlation model.

7. The method for constructing a novel power system standard system according to claim 6, characterized in that, Based on the framework of the new power system standard system, a linkage mechanism between science and technology, technical standards, and industry is established. The specific process is as follows: The linkage mechanism is a full-chain standard for power generation, transmission, trading, and accounting, specifically including: power generation standards: clarifying the technical requirements for power generation equipment and specifying additionality verification methods; transmission standards: formulating design standards and power quality standards for dedicated green electricity transmission channels, and clarifying the technical requirements for physical isolation between green electricity and conventional electricity; trading standards: specifying the participating entities, trading processes, and contract terms for green electricity trading; and accounting standards: formulating methods for calculating carbon emission reductions from green electricity and clarifying the accounting boundaries.

8. The method for constructing a novel power system standard system according to claim 7, characterized in that, The process of adaptively adjusting the linkage mechanism according to international standards is as follows: B1. Establish an international standards tracking database covering power standards published by international organizations. The database is updated monthly and automatically captures and stores information on new, revised, and abolished international standards. B2. Conduct international benchmarking analysis. Every six months, organize international standardization experts within the alliance to compare differences in key standard clauses and generate an "International Benchmarking Analysis Report". B3. Develop an adaptive adjustment plan. If the differences do not affect international compatibility, the standard shall remain unchanged; if the differences affect equipment exports or power trading, the standard shall be revised and the corresponding clauses adjusted to adapt to international rules.

9. The method for constructing a novel power system standard system according to claim 8, characterized in that, The process of establishing a dynamic update channel to conduct pilot verification of technological achievements is as follows: Select at least several different types of pilot projects to conduct pilot tests in various pilot areas, and deploy edge computing nodes in each pilot area to collect power equipment operation data in each preset period.

10. The method for constructing a novel power system standard system according to claim 9, characterized in that, The process of setting a standard deviation threshold and updating the technical standards is as follows: The operating data of the power equipment collected in each preset period is compared with the corresponding rated data to obtain the operating data deviation of the power equipment in each preset period. The operating deviation of the power equipment in each preset period is compared with the corresponding data deviation threshold. When the data of a certain power equipment exceeds the corresponding deviation threshold, it is revised accordingly, and the revised standard is re-tested on a pilot basis.

Images