An online analysis method and system for the AGC / AVC regulation performance of a new energy power station

Abstract

The present invention relates to the technical field of new energy power station performance analysis, and particularly relates to an online analysis method and system for AGC / AVC regulation performance of a new energy power station, including: obtaining historical data of the new energy power station, and calculating and obtaining the index standards of evaluation indexes by using a preset index algorithm; collecting operation data of the AGC system and the AVC system in the new energy power station in real time; analyzing the regulation performance of the AGC system and the AVC system; and displaying according to the analysis results. The standards of the corresponding indexes calculated by the present invention can more scientifically reflect the actual operation status of the new energy power station, and provide a solid foundation for subsequent performance analysis. According to the evaluation index standards obtained from the previous calculation and the operation data of the AGC system and the AVC system collected in real time, the regulation performance of the two is comprehensively analyzed to evaluate whether the system meets the predetermined requirements, which is convenient for operation and maintenance personnel to quickly understand the system performance status and make corresponding decisions.

Description

Technical Field

[0001] The present invention relates to the technical field of new energy power station performance analysis, and particularly relates to an online analysis method and system for AGC / AVC regulation performance of new energy power stations. Background Art

[0002] With the increasing global attention to the utilization of renewable energy, as an important part of clean energy, the performance optimization and stable operation of new energy power stations have become the focus of the industry. New energy power stations, especially photovoltaic power stations and wind farms, have significant environmental and economic benefits. However, due to the large influence of natural environment on their power generation power, they have the characteristics of intermittency and volatility, which bring great challenges to the dispatching and operation of the power grid.

[0003] To address these challenges and ensure the efficient and stable grid connection operation of new energy power stations, the Automatic Generation Control (AGC) and Automatic Voltage Control (AVC) systems have emerged. The AGC system is mainly responsible for adjusting the output power of the generator in real time according to the load demand of the power grid and the actual situation of the new energy power station to maintain the frequency stability of the power grid. The AVC system focuses on monitoring and regulating the power grid voltage to ensure that the voltage fluctuates within a reasonable range, thereby improving the power quality and power supply reliability.

[0004] However, in actual operation, the AGC / AVC regulation performance of new energy power stations is often affected by various factors, such as equipment performance, control strategies, environmental conditions, etc. These factors may lead to unsatisfactory adjustment effects of the AGC / AVC system, thereby affecting the overall operation efficiency of new energy power stations and the safety and stability of the power grid.

[0005] Therefore, it is particularly important to conduct online analysis on the AGC / AVC regulation performance of new energy power stations. Summary of the Invention

[0006] (I) Object of the Invention

[0007] The object of the present invention is to provide a method that can more accurately display the AGC / AVC regulation performance of new energy power stations.

[0008] (II) Technical Solution

[0009] To solve the above problems, the present invention provides an online analysis method for AGC / AVC regulation performance of new energy power stations, including:

[0010] Obtain the historical data of the new energy power station, and use a preset index algorithm to calculate and obtain the index standard of the evaluation index;

[0011] Collect the operation data of the AGC system and the AVC system in the new energy power station in real time;

[0012] Analyze the regulation performance of the AGC system and the AVC system according to the index standards of the evaluation indexes and the operation data of the AGC system and the AVC system collected in real time;

[0013] Display according to the analysis results.

[0014] On the other hand of the present invention, preferably,

[0015] The evaluation indexes of the AGC system include: regulation accuracy, response time, and power generation completion;

[0016] The evaluation indexes of the AVC system include: voltage deviation, voltage fluctuation, regulation speed, and AVC system stability.

[0017] On the other hand of the present invention, preferably,

[0018] The historical data of the new energy power station includes the target power and the actual output power of several AGC system regulations;

[0019] The preset index algorithm includes a regulation accuracy index algorithm;

[0020] The regulation accuracy index algorithm calculates the regulation accuracy index standard by using the following formula:

[0021]

[0022] wherein, P acc represents the regulation accuracy index standard; P set,i represents the target power of the i-th regulation, P out,i represents the actual output power of the i-th time, and n represents the number of AGC system regulations.

[0023] On the other hand of the present invention, preferably,

[0024] The historical data of the new energy power station includes the average response time of several AGC system regulations, the time when each regulation instruction is issued, and the time when each actual regulation starts;

[0025] The preset index algorithm includes a response time index algorithm;

[0026] The response time index algorithm calculates the response time index standard by using the following formula:

[0027]

[0028] wherein, T resp represents the response time index standard, Tcmd,i represents the time when the i-th adjustment command is issued, T start,i represents the time when the i-th adjustment actually starts to be adjusted, ΔT represents the average response time of n adjustments, and n represents the number of adjustments of the AGC system.

[0029] On the other hand, preferably,

[0030] The historical data of the new energy power station includes the target voltages of several AVC system adjustments and the actual output voltages of several AVC system adjustments;

[0031] The preset index algorithm includes a voltage deviation index algorithm;

[0032] The voltage deviation index algorithm calculates the voltage deviation index standard using the following formula:

[0033]

[0034] where V dev represents the voltage deviation index standard, m represents the number of AVC system adjustments, V set,j represents the target voltage of the j-th adjustment, V out,j represents the actual output voltage of the i-th time.

[0035] On the other hand, preferably,

[0036] The historical data of the new energy power station includes the target voltages of several AVC system adjustments and the average value of the actual output voltages of several AVC system adjustments;

[0037] The preset index algorithm includes a voltage fluctuation index algorithm;

[0038] The voltage fluctuation index algorithm calculates the voltage fluctuation index standard using the following formula:

[0039]

[0040] where V fluct represents the voltage fluctuation index standard, m represents the number of AVC system adjustments, V out,j represents the actual output voltage of the j-th time, represents the average value of the actual output voltages during m adjustments.

[0041] On the other hand, preferably,

[0042] The historical data of the new energy power station includes the actual output voltages of several AVC system adjustments and the duration of each adjustment;

[0043] The preset index algorithm includes an adjustment speed index algorithm;

[0044] The adjustment speed index algorithm calculates the adjustment speed index standard using the following formula:

[0045]

[0046] Wherein, V fluct represents the adjustment speed index standard, m represents the number of AVC system adjustments, V out,j represents the actual output voltage at the jth time, V out,j-1 represents the actual output voltage at the (j - 1)th time, Δt j represents the duration of the jth adjustment.

[0047] On the other hand, preferably,

[0048] The historical data of the new energy power station includes the actual output voltages of several AVC system adjustments and the target voltages of several AVC system adjustments;

[0049] The preset index algorithm includes an AVC system stability index algorithm;

[0050] The AVC system stability index algorithm calculates the AVC system stability index standard using the following formula:

[0051]

[0052] Wherein, S avc represents the AVC system stability index standard, V prev,j is the voltage before the jth adjustment, V out,j represents the actual output voltage at the jth time, V set,j represents the target voltage of the jth adjustment.

[0053] On the other hand, preferably, analyzing the regulation performance of the AGC system and the AVC system according to the index standards of the evaluation indexes and the operation data of the AGC system and the AVC system collected in real time includes:

[0054] Using the difference between the operation data of the AGC system and the AVC system collected in real time minus the index standards of the evaluation indexes, and dividing by the index standards of the corresponding evaluation indexes to obtain the scores of each evaluation index.

[0055] On the other hand, preferably, an online analysis system for the regulation performance of the AGC / AVC in a new energy power station includes:

[0056] Calculation standard module: Obtain the historical data of the new energy power station, and calculate and obtain the index standards of the evaluation indexes by using the preset index algorithm;

[0057] Collection module: Collect the operation data of the AGC system and AVC system in the new energy power station in real time;

[0058] Analysis module: Analyze the regulation performance of the AGC system and AVC system according to the index standards of the evaluation indexes and the operation data of the AGC system and AVC system collected in real time;

[0059] Display module: Display according to the analysis results.

[0060] (3) Beneficial effects

[0061] The above technical solutions of the present invention have the following beneficial technical effects:

[0062] The present invention calculates the standards of the corresponding indexes through the historical data of the new energy power station combined with the preset index algorithms, which can more scientifically reflect the actual operation conditions of the new energy power station and provide a solid foundation for subsequent performance analysis. According to the evaluation index standards obtained from the previous calculation and the operation data of the AGC system and AVC system collected in real time, the regulation performance of the two is comprehensively analyzed. By comparing the actual operation data with the standard values, it is evaluated whether the system meets the predetermined requirements, and possible problems or optimization spaces are identified. The display content can include the scores, rankings, trend charts, etc. of various evaluation indexes, which is convenient for operation and maintenance personnel to quickly understand the system performance status and make corresponding decisions. Description of the drawings

[0063] Figure 1 is the overall process schematic diagram of an embodiment of the present invention. Specific implementation manners

[0064] To make the purpose, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below in conjunction with specific implementation manners and with reference to the accompanying drawings. It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the present invention. In addition, in the following description, the descriptions of well-known structures and technologies are omitted to avoid unnecessarily confusing the concepts of the present invention.

[0065] Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0066] In addition, the technical features involved in different implementation manners of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0067] The present invention will be described in more detail below with reference to the accompanying drawings. In the various drawings, like elements are denoted by like reference numerals. For the sake of clarity, the various parts in the drawings are not drawn to scale.

[0068] Embodiment 1

[0069] An online analysis method for the AGC / AVC regulation performance of a new energy power station Figure 1 shows the overall flowchart of an embodiment of the present invention, as Figure 1 shown, including:

[0070] Obtain the historical data of the new energy power station, and use a preset index algorithm to calculate and obtain the index standard of the evaluation index; extract the operation data within a long time range from the database of the new energy power station, and this data can include power generation, voltage fluctuation, frequency deviation, power output, ambient temperature, wind speed or solar radiation intensity (for photovoltaic power stations), etc. In this embodiment, the preset index algorithm includes the algorithm for each corresponding index. The indexes in this embodiment include: The evaluation indexes of the AGC system include: adjustment accuracy, response time, and power generation completion; the adjustment accuracy refers to the deviation degree between the actual output power of the AGC system and the target output power. It reflects the execution accuracy and control ability of the AGC system for the power generation plan. The relative error percentage can be obtained by calculating the difference between the actual output power and the target power and dividing it by the target power. In this embodiment, the historical data of the new energy power station includes the target power and the actual output power of several AGC system adjustments; the preset index algorithm includes the adjustment accuracy index algorithm; the adjustment accuracy index algorithm calculates the adjustment accuracy index standard using the following formula:

[0071]

[0072] where P acc represents the adjustment accuracy index standard; P set,i represents the target power of the i-th adjustment, P out,i represents the actual output power of the i-th time, and n represents the number of AGC system adjustments. The use of the logarithmic function helps to reduce the influence of extreme error values on the overall evaluation, making the evaluation result more balanced and accurate, making the evaluation result more balanced; high adjustment accuracy helps to reduce the frequency fluctuation of the power grid and improve the power supply quality.

[0073] The response time of the AGC system refers to the time required for the actual output power to start changing from the moment the AGC system receives the adjustment instruction, which reflects the response speed and sensitivity of the system. The time difference between the two can be calculated by recording the time when the adjustment instruction is issued and the time point when the system output power starts to change.

[0074] In this embodiment, the historical data of the new energy power station includes the average response time of several AGC system regulations, the time when each regulation command is issued, and the time when each actual regulation starts;

[0075] The preset index algorithm includes a response time index algorithm;

[0076] The response time index algorithm calculates the response time index standard using the following formula:

[0077]

[0078] where T resp represents the response time index standard, T cmd,i represents the time when the i-th regulation command is issued, T start,i represents the time when the i-th regulation actually starts, ΔT represents the average response time of n regulations, and n represents the number of AGC system regulations. Through cubic operation and exponential decay, the response performance of all regulations can be comprehensively considered, providing a comprehensive response time index, facilitating the evaluation of the overall performance of the AGC system, and making the results more stable and reliable. During analysis, a shorter response time helps to quickly respond to grid load changes and maintain the stability of the power grid.

[0079] The evaluation indicators of the AVC system include: voltage deviation, voltage fluctuation, regulation speed, and AVC system stability. Voltage deviation refers to the deviation between the actual voltage of the AVC system and the rated voltage, reflecting the stability and regulation ability of the system voltage. The voltage deviation can be calculated by detecting the actual voltage value and comparing it with the rated voltage. In this embodiment, the historical data of the new energy power station includes the target voltage of several AVC system regulations and the actual output voltage of several AVC system regulations; the preset index algorithm includes a voltage deviation index algorithm; the voltage deviation index algorithm calculates the voltage deviation index standard using the following formula:

[0080]

[0081] where V dev represents the voltage deviation index standard, m represents the number of AVC system regulations, V set,j represents the target voltage of the j-th regulation, and V out,j represents the actual output voltage of the i-th regulation. By calculating the voltage deviation ratio of each regulation and squaring it, the accuracy of voltage regulation can be quantified. The use of the cosine function may be used to simulate the importance of voltage regulation under different time periodic change conditions. By identifying the regulation periods with large voltage deviations, targeted system optimization can be carried out to reduce future deviations. Small voltage deviations help to protect power equipment from damage and improve the power supply quality.

[0082] Voltage fluctuation refers to the degree to which the system voltage fluctuates above and below the average value within a certain period of time. It reflects the stability and anti-interference ability of the system voltage. Voltage fluctuation can be evaluated by calculating the standard deviation of voltage changes, the difference between the maximum and minimum values, or the voltage change rate within a specific time period. In this embodiment, the historical data of the new energy power station includes the average value of the target voltages of several AVC system regulations and the actual output voltages of several AVC system regulations; the preset index algorithm includes the voltage fluctuation index algorithm; the voltage fluctuation index algorithm calculates the voltage fluctuation index standard using the following formula:

[0083]

[0084] Where V fluct represents the voltage fluctuation index standard, m represents the number of AVC system regulations, V out,j represents the actual output voltage of the jth time, represents the average value of the actual output voltages during m regulations.

[0085] The regulation speed refers to the time required for the AVC system to complete voltage regulation from detecting voltage deviation. It reflects the response speed and regulation ability of the system. It can be calculated by recording the voltage deviation detection time and the voltage recovery stable time, and calculating the time difference between the two. A faster regulation speed helps to quickly restore voltage stability and reduce the impact of power grid fluctuations on electrical equipment.

[0086] In this embodiment, the historical data of the new energy power station includes the actual output voltages of several AVC system regulations and the duration of each regulation;

[0087] The preset index algorithm includes the regulation speed index algorithm;

[0088] The regulation speed index algorithm calculates the regulation speed index standard using the following formula:

[0089]

[0090] Where V fluct represents the regulation speed index standard, m represents the number of AVC system regulations, V out,j represents the actual output voltage of the jth time, V out,j-1 represents the actual output voltage of the (j - 1)th time, Δt j represents the duration of the jth regulation. By calculating the absolute value of the voltage change between two consecutive regulations and dividing it by the time interval, the regulation speed of the voltage can be quantified. The use of the logarithmic function here is to reduce the influence of extreme values and make the evaluation results more balanced.

[0091] The stability of the AVC system refers to the ability of the system to maintain voltage stability and continue to operate normally when subjected to external disturbances or load changes. In this embodiment, the historical data of the new energy power station includes the actual output voltages of several AVC system regulations and the target voltages of several AVC system regulations;

[0092] The preset index algorithm includes the AVC system stability index algorithm;

[0093] The AVC system stability index algorithm calculates the AVC system stability index standard using the following formula:

[0094]

[0095] where S avc represents the AVC system stability index standard, V prev,j is the voltage before the jth regulation, V out,j represents the actual output voltage of the jth regulation, V set,j represents the target voltage of the jth regulation. By calculating the deviation between the voltage after each regulation and the voltage before the regulation and comparing it with the target voltage, the stability of the AVC system can be quantified. The closer the value of S avc is to 1, the better the stability of the AVC system. This index can be used to evaluate the overall performance of the AVC system.

[0096] Real-time collect the operation data of the AGC system and the AVC system in the new energy power station;

[0097] The data collected here can collect the corresponding data according to each index;

[0098] For example, for the regulation accuracy of the AGC system, collect the target power and the actual output power of the real-time AGC system regulation; the regulation accuracy of the real-time AGC system is obtained by calculating the difference between the target power and the actual output power of the real-time AGC system regulation divided by the target power of the real-time AGC system regulation.

[0099] For the response time, collect the time when the real-time regulation instruction is issued and the time when the actual regulation starts; the real-time response time is obtained by calculating the difference between the time when the actual regulation starts in real time and the time when the real-time regulation instruction is issued.

[0100] It is also possible to set a power generation index, and the power generation index standard can be set by the power generation within a time period. The time period can be set according to seasonal characteristics. In this embodiment, the corresponding power generation index standard in the real-time state can be obtained through the following calculation formula:

[0101]

[0102] where E genIndicates the standard of power generation index, t 0 Indicates the initial time, T represents the total time, P rated Indicates the rated power of the equipment of the new energy power station, η(t) represents the efficiency of the equipment of the new energy power station at time t; δ(t) represents the equipment performance degradation factor at time t; f env(t) Indicates the environmental factor at time t. By considering the time variable t, the power generation efficiency can be dynamically evaluated in different time periods, which is suitable for the situation where the power generation conditions change with time. Introducing the environmental factor enables the evaluation result to reflect the influence of the actual environmental conditions on the power generation efficiency, increasing the practicality and accuracy of the model. The introduction of the performance degradation factor helps to monitor the performance changes of the equipment; the real-time power generation is obtained through statistics.

[0103] The data collected for the voltage deviation of the AVC system includes the target voltage adjusted by the real-time AVC system and the actual output voltage adjusted by the real-time AVC system; the voltage deviation of the real-time AVC system is calculated by using the difference between the target voltage adjusted by the real-time AVC system and the actual output voltage adjusted by the real-time AVC system divided by the target voltage adjusted by the real-time AVC system.

[0104] The data collected for the voltage fluctuation of the AVC system includes the actual output voltage adjusted by the real-time AVC system and the actual output voltage adjusted by the AVC system in the previous time. The difference between the two is the real-time voltage fluctuation.

[0105] The data collected for the regulation speed includes the actual output voltage adjusted by the real-time AVC system and the actual output voltage adjusted by the AVC system in the previous time, and the real-time regulation duration. The real-time regulation speed is obtained by dividing the difference between the actual output voltage adjusted by the real-time AVC system and the actual output voltage adjusted by the AVC system in the previous time by the real-time regulation duration.

[0106] The data collected for the stability of the AVC system includes the actual output voltage adjusted by the real-time AVC system and the target voltage adjusted by the real-time AVC system, and the difference between the two is calculated.

[0107] According to the index standards of the evaluation indexes and the operation data of the AGC system and the AVC system collected in real time, the regulation performance of the AGC system and the AVC system is analyzed; including: using the difference between the operation data of the AGC system and the AVC system collected in real time minus the index standards of the evaluation indexes, and dividing by the index standards of the corresponding evaluation indexes to obtain the scores of each evaluation index.

[0108] Display according to the analysis results.

[0109] The present invention calculates the standards of corresponding indicators through the historical data of new energy power stations in combination with preset indicator algorithms, which can more scientifically reflect the actual operation status of new energy power stations and provide a solid foundation for subsequent performance analysis. According to the evaluation indicator standards obtained from the previous calculations and the operation data of the AGC system and AVC system collected in real time, the regulation performance of both is comprehensively analyzed. By comparing the actual operation data with the standard values, it is evaluated whether the system meets the predetermined requirements, and possible problems or optimization spaces are identified. The displayed content can include the scores, rankings, trend charts, etc. of various evaluation indicators, which is convenient for operation and maintenance personnel to quickly understand the system performance status and make corresponding decisions.

[0110] Embodiment 2

[0111] An on-line analysis system for the regulation performance of AGC / AVC in new energy power stations, comprising:

[0112] Calculation standard module: Obtain the historical data of the new energy power station and calculate the indicator standards of the evaluation indicators by using the preset indicator algorithms;

[0113] Collection module: Collect the operation data of the AGC system and AVC system in the new energy power station in real time;

[0114] Analysis module: Analyze the regulation performance of the AGC system and AVC system according to the indicator standards of the evaluation indicators and the operation data of the AGC system and AVC system collected in real time;

[0115] Display module: Display according to the analysis results.

[0116] It should be understood that the above specific embodiments of the present invention are only used for exemplary illustration or explanation of the principle of the present invention, and do not constitute a limitation to the present invention. Therefore, any modifications, equivalent replacements, improvements, etc. made without departing from the spirit and scope of the present invention shall be included within the protection scope of the present invention. In addition, the appended claims of the present invention are intended to cover all changes and modifications that fall within the scope and boundaries of the appended claims, or equivalent forms of such scope and boundaries.

[0117] The present invention has been described above with reference to the embodiments of the present invention. However, these embodiments are only for the purpose of illustration and not for the purpose of limiting the scope of the present invention. The scope of the present invention is defined by the appended claims and their equivalents. Without departing from the scope of the present invention, those skilled in the art can make various substitutions and modifications, and these substitutions and modifications should all fall within the scope of the present invention.

[0118] Although the embodiments of the present invention have been described in detail, it should be understood that various changes, substitutions and alterations can be made to the embodiments of the present invention without departing from the spirit and scope of the present invention.

[0119] Obviously, the above embodiments are merely examples given for clear illustration and are not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to enumerate all implementation manners here. And the obvious changes or modifications derived therefrom still fall within the protection scope of the present invention.

Claims

1. A method for online analysis of AGC / AVC control performance of a new energy station, characterized in that: include: Obtain historical data of new energy stations, and use the preset indicator algorithm to calculate the indicator standards for obtaining evaluation indicators; Real-time collection of operating data of AGC and AVC systems in new energy stations; Analyze the control performance of the AGC system and the AVC system according to the indicator standards of the evaluation indicators and the operating data of the AGC system and the AVC system collected in real time; Presentation based on analysis results; The evaluation indicators of the AGC system include: adjustment accuracy and response time; The evaluation indicators of the AVC system include: voltage deviation, voltage fluctuation, regulation speed and AVC system stability; The historical data of the new energy station includes the target power and actual output power adjusted by the AGC system for several times; The preset index algorithm includes an adjustment accuracy index algorithm; The adjustment accuracy index algorithm uses the following formula to calculate the adjustment accuracy index standard: Among them, P acc Indicates the adjustment accuracy index standard; P set,i represents the target power of the ith adjustment, P out,i represents the actual output power at the i-th time, and n represents the number of times the AGC system is adjusted; The historical data of the new energy station includes the average response time of several AGC system adjustments, the time when each adjustment instruction is issued, and the time when each adjustment actually starts; The preset indicator algorithm includes a response time indicator algorithm; The response time index algorithm uses the following formula to calculate the response time index standard: Among them, T resp Represents the response time indicator standard, T cms,i Indicates the time when the i-th adjustment instruction is issued, T start,i represents the time when the i-th adjustment actually starts, and ΔT represents the average response time of n adjustments; The historical data of the new energy station includes the actual output voltage adjusted by the AVC system for several times and the duration of each adjustment; The preset index algorithm includes an adjustment speed index algorithm; The speed adjustment algorithm uses the following formula to calculate the speed adjustment standard: Among them, V rate Indicates the adjustment speed index standard, m indicates the number of AVC system adjustments, V out,j Indicates the jth actual output voltage, V out,j-1 Indicates the actual output voltage for the j-1th time, Δt j represents the duration of the jth adjustment.

2. The online analysis method according to claim 1, characterized in that: The historical data of the new energy station includes target voltages regulated by the AVC system for several times and actual output voltages regulated by the AVC system for several times; The preset index algorithm includes a voltage deviation index algorithm; The voltage deviation index algorithm uses the following formula to calculate the voltage deviation index standard: Among them, V dev Indicates the voltage deviation index standard, m indicates the number of AVC system adjustments, V set,j represents the target voltage for the jth adjustment, V out,j Indicates the jth actual output voltage.

3. The online analysis method according to claim 1, characterized in that: The historical data of the new energy station includes the target voltage adjusted by the AVC system for several times and the average value of the actual output voltage adjusted by the AVC system for several times; The preset index algorithm includes a voltage fluctuation index algorithm; The voltage fluctuation index algorithm uses the following formula to calculate the voltage fluctuation index standard: Among them, V fluct Indicates the voltage fluctuation index standard, m indicates the number of AVC system adjustments, V out,j represents the jth actual output voltage, It represents the average value of the actual output voltage in m adjustments.

4. The online analysis method according to claim 1, characterized in that: The historical data of the new energy station includes actual output voltages regulated by the AVC system for several times and target voltages regulated by the AVC system for several times; The preset index algorithm includes an AVC system stability index algorithm; The AVC system stability index algorithm uses the following formula to calculate the AVC system stability index standard: Among them, S avc Represents the stability index standard of the AVC system, V prev,j is the voltage before the jth adjustment, V out,j Indicates the jth actual output voltage, V set,j represents the target voltage of the jth adjustment, and m represents the number of adjustments of the AVC system.

5. The online analysis method according to claim 1, characterized in that: According to the index standards of the evaluation index and the real-time collected operation data of the AGC system and the AVC system, the control performance of the AGC system and the AVC system is analyzed, including: The difference between the index standards of the evaluation index and the difference between the real-time collected operation data of the AGC system and the AVC system is subtracted and divided by the index standards of the corresponding evaluation index to obtain the scores of each evaluation index.

6. An online analysis system for AGC / AVC control performance of new energy stations, characterized in that: include: Calculation standard module: obtain historical data of new energy stations, use the preset indicator algorithm to calculate the indicator standard of the evaluation indicator; Collection module: real-time collection of operating data of the AGC system and AVC system in new energy stations; Analysis module: analyzing the control performance of the AGC system and the AVC system according to the indicator standards of the evaluation indicators and the operation data of the AGC system and the AVC system collected in real time; Display module: display according to the analysis results; The evaluation indicators of the AGC system include: adjustment accuracy and response time; The evaluation indicators of the AVC system include: voltage deviation, voltage fluctuation, regulation speed and AVC system stability; The historical data of the new energy station includes the target power and actual output power adjusted by the AGC system for several times; The preset index algorithm includes an adjustment accuracy index algorithm; The adjustment accuracy index algorithm uses the following formula to calculate the adjustment accuracy index standard: Among them, P acc Indicates the adjustment accuracy index standard; P set,i represents the target power of the ith adjustment, P out,i represents the actual output power at the i-th time, and n represents the number of times the AGC system is adjusted; The historical data of the new energy station includes the average response time of several AGC system adjustments, the time when each adjustment instruction is issued, and the time when each adjustment actually starts; The preset indicator algorithm includes a response time indicator algorithm; The response time index algorithm uses the following formula to calculate the response time index standard: Among them, T resp Represents the response time indicator standard, T cms,i Indicates the time when the i-th adjustment instruction is issued, T start,i represents the time when the i-th adjustment actually starts, and ΔT represents the average response time of n adjustments; The historical data of the new energy station includes the actual output voltage adjusted by the AVC system for several times and the duration of each adjustment; The preset index algorithm includes an adjustment speed index algorithm; The speed adjustment algorithm uses the following formula to calculate the speed adjustment standard: Among them, V rate Indicates the adjustment speed index standard, m indicates the number of AVC system adjustments, V out,j Indicates the jth actual output voltage, V out,j-1 Indicates the actual output voltage for the j-1th time, Δt j represents the duration of the jth adjustment.

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