A method, system, memory and device for online active monitoring and evaluation of primary frequency modulation performance of a new energy field

Abstract

The present invention discloses a method, system, memory and device for online active monitoring and evaluation of the primary frequency regulation performance of a new energy field. The method adopts RTU for control, PMU for synchronous acquisition, and a primary frequency regulation performance analysis and evaluation mode on the dispatching side. The method performs online monitoring, active perception, simulation exercises and active control on the primary frequency regulation performance of the new energy field, and evaluates the primary frequency regulation performance of the new energy field in combination with the primary frequency regulation performance indicators of the new energy field, thereby comprehensively improving the primary frequency regulation margin of the power grid.

Description

Technical Field

[0001] The present invention relates to an online active monitoring and evaluation method, system, memory and equipment for the primary frequency regulation performance of a new energy field, and belongs to the technical field of intelligent analysis and control of power systems. Background Art

[0002] As the "double high" characteristics of the power system become increasingly prominent, the rapid frequency regulation resources such as conventional thermal and hydropower units are gradually decreasing, and the structural difficulties of grid frequency control are becoming increasingly apparent. In the future "new energy-based new power system," new energy units will be required to assume the same power system frequency regulation responsibilities as conventional thermal units, necessitating the urgent development of new energy primary frequency regulation capabilities.

[0003] The "Technical Guidelines for Power System Grid Source Coordination" (GB / T 40594-2021) and the "Technical Provisions and Test Guidelines for Primary Frequency Regulation of Grid-connected Power Sources" (GB / T40595-2021) standards both put forward relevant technical requirements for primary frequency regulation of renewable energy fields. There are certain differences in their technical requirements, which need to be determined in combination with the actual needs of the power grid. However, domestic renewable energy primary frequency regulation and analysis and evaluation are still in the pilot and promotion stage. There is little experience to draw on for the technical requirements and analysis and evaluation indicators of new energy primary frequency regulation. It is urgent to carry out online evaluation of the performance of new energy primary frequency regulation.

[0004] At present, the primary frequency regulation dispatching management mode is mostly a "passive mode of tracking the grid frequency", and the primary frequency regulation test is a passive test and analysis method with a long test cycle and low frequency, which cannot realize intelligent multi-dimensional analysis and systematic diagnosis; the performance of new energy primary frequency regulation under various power grid accidents such as DC locking and unit tripping is also difficult to perceive in advance; there is an urgent need to carry out research and application of online active testing technology solutions for new energy primary frequency regulation. Summary of the Invention

[0005] The present invention provides a method, system, memory and device for online active monitoring and evaluation of the primary frequency regulation performance of a new energy field. The method comprehensively analyzes and evaluates the primary frequency regulation performance of new energy from multiple aspects, including the reliability of the primary frequency regulation control system, the dynamic response performance of the primary frequency regulation, the primary frequency regulation performance under large frequency difference disturbances, and the primary frequency regulation performance under power grid accidents, thereby comprehensively improving the primary frequency regulation margin of the power grid.

[0006] In order to achieve the above object, the technical solution adopted by the present invention is:

[0007] In one aspect, the present invention provides a method for online active monitoring and evaluation of primary frequency regulation performance of a new energy field, comprising:

[0008] Obtain new energy field data collected by remote measurement and control devices and synchronized phasor measurement devices from the dispatch support system to evaluate the reliability and dynamic response performance of the primary frequency regulation of the new energy field;

[0009] Send disturbance frequency data to the new energy field, and actively sense the primary frequency regulation performance of the new energy field under frequency disturbance;

[0010] Conduct simulation drills on power grid accidents and actively perceive the primary frequency regulation performance of new energy fields in response to power grid accidents.

[0011] Further,

[0012] The reliability assessment of the primary frequency regulation of the renewable energy field includes: calculating the operation rate of the primary frequency regulation of the renewable energy field based on the active power of the renewable energy field and the on / off status of the primary frequency regulation;

[0013] The evaluation of the dynamic response performance of the primary frequency regulation of the renewable energy field includes: calculating the primary frequency regulation performance indicators according to the active power of the renewable energy field and the grid frequency, including: lag time, output response index, power contribution index and response deviation.

[0014] Furthermore, the primary frequency regulation operation rate of the new energy field is calculated as follows:

[0015] Calculate the active load rate of the new energy field based on the dynamic change process of the active power of the new energy field;

[0016] Statistics are collected on the grid connection time of the new energy farm and the duration of the operation of the primary frequency regulation system of the new energy farm when the active load rate is greater than the lower limit of the primary frequency regulation operation;

[0017] The monthly commissioning rate of frequency regulation is calculated as follows:

[0018] Monthly operation rate of primary frequency regulation = (monthly operation time of primary frequency regulation system / monthly grid-connected time of new energy field) × 100%.

[0019] Furthermore, the calculation of the primary frequency modulation performance index includes:

[0020] Online monitoring of the dynamic changes in grid frequency and active power of renewable energy fields, capturing effective primary frequency modulation disturbances. When effective primary frequency modulation disturbances occur in the grid, analysis and evaluation of the dynamic response performance of the primary frequency modulation of renewable energy fields are performed.

[0021] The lag time is the time required from the grid frequency changing to reaching the primary frequency regulation action value to the unit output starting to change in the direction of frequency recovery;

[0022] The output response index is calculated as follows:

[0023]

[0024] Where ΔP ％ Indicates the primary frequency modulation output response index, ΔP SIndicates the primary frequency modulation active power rise time and the actual maximum output adjustment within the adjustment time, ΔP E Indicates the primary frequency modulation active power rise time and the theoretical maximum output adjustment within the adjustment time;

[0025] The frequency modulation action period is from the time when the frequency deviation exceeds the dead zone to the time when the frequency deviation returns to the dead zone range;

[0026] The power contribution index is calculated as follows:

[0027]

[0028] Among them, Q ％ Indicates the unit's primary frequency regulation power contribution index, ΔQ S Indicates the actual power contribution of the unit during the frequency regulation period, ΔQ E Indicates the theoretical integrated power of the unit's primary frequency regulation;

[0029] The response deviation is calculated as follows:

[0030]

[0031] Among them, κ ％ Indicates the primary frequency modulation response deviation, ΔP V It represents the average value of the difference between the actual output adjustment of the unit and the theoretical output contribution during a frequency regulation operation period, which is the difference between the high-frequency output reduction or the low-frequency output increase. E Indicates the theoretical maximum output adjustment of a single frequency modulation.

[0032] Furthermore, the sending of the disturbance frequency data to the new energy field to actively sense the primary frequency regulation performance of the new energy field under the frequency disturbance includes:

[0033] Use the remote measurement and control device to actively send a frequency modulation remote monitoring instruction to the new energy field;

[0034] After the new energy field receives the primary frequency regulation remote monitoring input command, the primary frequency regulation control system of the new energy field switches to the remote monitoring mode, and the primary frequency regulation function stops actual operation and no longer responds to changes in the grid frequency;

[0035] Sending a primary frequency modulation test perception instruction and disturbance frequency data to the new energy field; the primary frequency modulation test perception instruction is any one of a primary frequency modulation dead zone test perception instruction, a primary frequency modulation limit test perception instruction, and a primary frequency modulation dynamic performance test perception instruction;

[0036] The new energy field automatically responds to loads based on the primary frequency modulation test sensing instructions. The primary frequency modulation control system of the new energy field switches to normal operating mode until it receives the primary frequency modulation remote monitoring exit instruction.

[0037] The primary frequency regulation performance of the new energy field is calculated based on the result data recorded during the test.

[0038] Further,

[0039] If a frequency modulation test perception instruction is a frequency modulation dead zone test perception instruction, then,

[0040] After receiving the primary frequency modulation dead zone test perception command, the new energy field maintains the pulse time length at 120 seconds, and the analog frequency signal in the primary frequency modulation control system changes from 49.7Hz to 50.3Hz at a rate of 0.005Hz / s;

[0041] During the frequency change, the primary frequency modulation control system calculates the primary frequency modulation load instruction in real time according to the disturbance frequency, and sends the simulated frequency signal and the calculated primary frequency modulation load instruction to the dispatching side in real time; the primary frequency modulation load instruction is the active power of the primary frequency modulation control object;

[0042] The dispatching side evaluates the primary frequency regulation dead zone parameters of the new energy field based on the simulated frequency signal of the new energy field and the primary frequency regulation load instruction recorded during the test.

[0043] Further,

[0044] If a frequency modulation test perception instruction is a frequency modulation limit test perception instruction, then,

[0045] After the new energy field receives the primary frequency modulation limit test perception instruction, the primary frequency modulation control system of the new energy field analyzes the disturbance frequency data and automatically increases or decreases the load response;

[0046] During this period, the primary frequency regulation control system calculates the primary frequency regulation load instruction in real time according to the disturbance frequency, and sends the disturbance frequency executed by the primary frequency regulation control system and the active power of the primary frequency regulation control object of the new energy field to the dispatching side in real time; the primary frequency regulation load instruction is the active power of the primary frequency regulation control object;

[0047] The dispatching side evaluates the primary frequency regulation limiting parameters of the new energy field based on the disturbance frequency and active power of the primary frequency regulation control object recorded during the test.

[0048] Further,

[0049] If a frequency modulation test perception instruction is a frequency modulation dynamic performance test perception instruction, then,

[0050] After the new energy field receives the primary frequency modulation dynamic performance test perception instruction, the primary frequency modulation control system of the new energy field analyzes the disturbance frequency data and automatically increases or decreases the load response;

[0051] During this period, the primary frequency regulation control system calculates the primary frequency regulation load instruction in real time according to the disturbance frequency, and sends the disturbance frequency executed by the primary frequency regulation control system and the active power of the primary frequency regulation control object of the new energy field to the dispatching side in real time; the primary frequency regulation load instruction is the active power of the primary frequency regulation control object;

[0052] The dispatching side calculates the primary frequency regulation lag time, output response index, power contribution index and response deviation of the new energy field based on the disturbance frequency and active power of the primary frequency regulation control object recorded during the test.

[0053] Furthermore, the simulation drill for power grid accidents and the active perception of the primary frequency regulation performance of the new energy field in response to power grid accidents include:

[0054] Issue a frequency modulation remote monitoring instruction to the new energy field;

[0055] After the new energy field receives the primary frequency regulation remote monitoring input command, the primary frequency regulation control system of the new energy field switches to the remote monitoring mode, and the primary frequency regulation function stops actual operation and no longer responds to changes in the grid frequency;

[0056] Send a frequency regulation simulation drill instruction and a frequency regulation simulation frequency curve under power grid accidents to the new energy field;

[0057] New energy field analysis frequency modulation simulation frequency, automatic load response;

[0058] During this period, the primary frequency regulation control system calculates the primary frequency regulation load instruction in real time according to the disturbance frequency, and sends the disturbance frequency executed by the primary frequency regulation control system and the active power of the primary frequency regulation control object of the new energy field to the dispatching side in real time; until the primary frequency regulation remote monitoring exit instruction is received, the primary frequency regulation control system of the new energy field switches to the normal operation mode; the said primary frequency regulation load instruction is the active power of the primary frequency regulation control object;

[0059] The dispatching side calculates the primary frequency regulation lag time, output response index, power contribution index and response deviation of the new energy field based on the disturbance frequency and active power of the primary frequency regulation control object recorded during the test.

[0060] Furthermore, the power grid accident includes any one of the following:

[0061] Unit tripping, UHV fault and DC blocking.

[0062] Furthermore, the method also includes the following steps of actively controlling the new energy field according to the operation requirements of the power grid:

[0063] Issue a frequency regulation active power standby activation / deactivation command to the new energy field;

[0064] After the new energy field receives the primary frequency regulation active reserve capacity, the primary frequency regulation control system of the new energy field reserves the upper regulation active reserve capacity;

[0065] After the new energy field receives the primary frequency regulation active reserve exit, the primary frequency regulation control system of the new energy field does not adjust the active reserve capacity on the reserve;

[0066] Obtain the active reserve on / off status and active power of the primary frequency modulation of the new energy field collected synchronously by the synchronized phasor measurement device, and calculate the active reserve deviation rate as follows:

[0067]

[0068] Among them, ΔG ％ Indicates the active reserve deviation rate, ΔP S It indicates the actual output adjustment after the active reserve of the new energy field is put into use, ΔP E Indicates the maximum adjustment amount of the primary frequency regulation active reserve of the new energy field.

[0069] A second aspect of the present invention provides a new energy field primary frequency regulation performance online active monitoring and evaluation system for implementing the aforementioned new energy field primary frequency regulation performance online active monitoring and evaluation method, which is connected to the remote measurement and control device and synchronized phasor measurement device of the new energy field through a scheduling support system, including:

[0070] The data acquisition and processing module is used to obtain the new energy field data collected by the remote measurement and control device and the synchronized phasor measurement device from the dispatch support system; and is used to issue a frequency modulation test perception instruction and a frequency modulation simulation exercise instruction to the new energy field;

[0071] The primary frequency regulation performance online monitoring and evaluation module is used to monitor the dynamic changes of the grid frequency and new energy field data online, and evaluate the reliability and dynamic response performance of the primary frequency regulation of the new energy field;

[0072] The online active testing and evaluation module for primary frequency regulation performance is used to send disturbance frequency data to the new energy field, actively perceive the primary frequency regulation performance of the new energy field under frequency disturbance; and to simulate and drill power grid accidents to actively perceive the primary frequency regulation performance of the new energy field in response to power grid accidents.

[0073] Furthermore, the data acquisition and processing module includes:

[0074] Steady-state data acquisition and processing module, used to obtain and send a frequency modulation test perception instruction and a frequency modulation simulation exercise instruction to the new energy field;

[0075] The dynamic data acquisition and processing module is used to obtain the new energy field data collected by the remote measurement and control device and the synchronous phasor measurement device from the dispatch support system, as well as the primary frequency regulation load instructions during the test; the new energy field data includes the active power of the new energy field and the primary frequency regulation on / off status.

[0076] Furthermore, the primary frequency regulation performance online monitoring and evaluation module is specifically used to:

[0077] Calculate the primary frequency regulation operation rate of the new energy field based on the active power of the new energy field and the primary frequency regulation on / off status;

[0078] In addition, based on the active power of the new energy field and the grid frequency, the primary frequency regulation performance indicators are calculated, including: lag time, output response index, power contribution index and response deviation.

[0079] Furthermore, the primary frequency regulation performance online active testing and evaluation module includes:

[0080] The primary frequency modulation dead zone test module is used to actively send a primary frequency modulation remote monitoring instruction and a primary frequency modulation dead zone test perception instruction to the new energy field using a remote measurement and control device; receive the simulated frequency of the new energy field during the test period and the calculated primary frequency modulation load instruction; and evaluate the primary frequency modulation dead zone parameters of the new energy field based on the received information;

[0081] The primary frequency modulation amplitude limiting test module is used to actively send a primary frequency modulation remote monitoring instruction and a primary frequency modulation amplitude limiting test perception instruction to the new energy field using a remote measurement and control device; receive the disturbance frequency executed by the new energy field during the test and the active power of the primary frequency modulation control object of the new energy field; and evaluate the primary frequency modulation amplitude limiting parameters of the new energy field based on the received information;

[0082] The primary frequency modulation dynamic performance test module is used to actively send primary frequency modulation remote monitoring instructions and primary frequency modulation dynamic performance test perception instructions to the new energy field using a remote measurement and control device; receive the disturbance frequency executed by the new energy field during the test and the active power of the primary frequency modulation control object of the new energy field; and calculate the primary frequency modulation lag time, output response index, power contribution index and response deviation of the new energy field based on the received information;

[0083] The primary frequency regulation simulation drill module is used to send the primary frequency regulation simulation drill instruction and the frequency regulation simulation frequency curve under the power grid accident to the new energy field; receive the disturbance frequency executed by the new energy field during the test and the active power of the primary frequency regulation control object of the new energy field; and calculate the primary frequency regulation lag time, output response index, power contribution index and response deviation of the new energy field based on the received information;

[0084] The primary frequency regulation active control module is used to issue the primary frequency regulation active standby activation / deactivation command to the new energy field according to the needs of the power grid operation; obtain the primary frequency regulation active standby activation / deactivation status and active power of the new energy field synchronously collected by the synchronous phasor measurement device, and calculate the active standby deviation rate.

[0085] A third aspect of the present invention provides a computer-readable memory storing one or more programs, wherein the one or more programs include instructions that, when executed by a computing device, cause the computing device to perform the aforementioned method.

[0086] A fourth aspect of the present invention provides a device comprising one or more processors, one or more memories, and one or more programs, wherein the one or more programs are stored in the one or more memories and are configured to be executed by the one or more processors, and the one or more programs include instructions for executing the aforementioned method.

[0087] The beneficial effects achieved by the present invention are:

[0088] (1) The present invention moves from online monitoring of the primary frequency regulation performance of renewable energy in the "passive mode of tracking grid frequency" to active perception of the primary frequency regulation performance of renewable energy, and actively explores the primary frequency regulation performance of renewable energy fields under large frequency difference disturbances;

[0089] (2) The present invention uses past and future grid accident data as drill samples to simulate the response of new energy fields to various grid accidents such as unit tripping, ultra-high voltage faults, and DC lockouts, thereby achieving early perception of the primary frequency regulation performance of new energy fields and tapping the primary frequency regulation potential of new energy fields;

[0090] (3) The present invention constructs an online active monitoring and evaluation system for the primary frequency regulation performance of new energy, which comprehensively analyzes and evaluates the primary frequency regulation performance of new energy from multiple aspects, such as the reliability of the primary frequency regulation control system, the dynamic response performance of the primary frequency regulation, the primary frequency regulation performance under large frequency difference disturbances, and the primary frequency regulation performance under power grid accidents. It comprehensively improves the primary frequency regulation margin of the power grid, actively builds the first line of defense for frequency stability, and better guarantees the safe production and operation of the power grid. BRIEF DESCRIPTION OF THE DRAWINGS

[0091] Figure 1 The architecture of the online active monitoring and evaluation system for the primary frequency regulation performance of the new energy field provided by the present invention;

[0092] Figure 2 This is a flowchart of the online active perception of a frequency modulation in Example 1 of the present invention;

[0093] Figure 3 This is a flow chart of an online frequency modulation simulation exercise in Example 1 of the present invention. DETAILED DESCRIPTION

[0094] The present invention will be further described below in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present invention and are not intended to limit the scope of protection of the present invention.

[0095] Example 1

[0096] This embodiment provides a method for online active monitoring and evaluation of primary frequency regulation performance of a new energy field, including the following steps:

[0097] Step 1: Obtain the new energy field data collected by the remote measurement and control unit (RTU) and the synchronized phasor measurement unit (PMU) from the dispatch support system, monitor the dynamic changes of the grid frequency and the new energy field measurement data online, analyze and calculate the primary frequency regulation parameters of the new energy field, and comprehensively evaluate the primary frequency regulation performance of the new energy field.

[0098] In this step, evaluating the primary frequency regulation performance of the new energy field includes evaluating the reliability of the primary frequency regulation of the new energy field and evaluating the dynamic response performance of the primary frequency regulation of the new energy field.

[0099] The reliability of the primary frequency regulation of the new energy field is evaluated. The specific implementation process is as follows:

[0100] 11) Obtain the active power and primary frequency regulation on / off status of the new energy field collected by the RTU and PMU from the dispatch support system, analyze and calculate the primary frequency regulation commissioning rate of the new energy field, and evaluate the reliability of the primary frequency regulation of the new energy field.

[0101] The primary frequency regulation operation rate is calculated as follows:

[0102] Monitor the dynamic changes of the active power of the new energy farm in real time, analyze and calculate the active load rate of the new energy farm, and collect statistics on the grid connection time of the new energy farm and the duration of the primary frequency regulation system being in operation when the active load rate is greater than the lower limit of the primary frequency regulation. Calculate the monthly primary frequency regulation operation rate as follows:

[0103] Monthly operation rate of primary frequency regulation = (monthly operation time of primary frequency regulation system / monthly grid-connected time of new energy field) × 100%.

[0104] The monthly operation rate of primary frequency regulation should reach 100%.

[0105] The dynamic response performance of the primary frequency modulation of the new energy field is evaluated. The specific implementation process is as follows:

[0106] 12) Obtain the active power and grid frequency of the renewable energy field collected by the RTU and PMU from the dispatch support system, monitor the dynamic changes of the grid frequency and the active power of the renewable energy field online, capture an effective frequency modulation disturbance, and conduct a frequency modulation dynamic response performance analysis and evaluation when an effective frequency modulation disturbance occurs in the power grid.

[0107] The purpose of defining effective primary frequency modulation disturbance is to determine a frequency band selection method, and use this frequency band to examine the compliance of renewable energy primary frequency modulation performance. A reasonable definition of effective primary frequency modulation disturbance is the basis for objectively evaluating renewable energy primary frequency modulation performance. Effective primary frequency modulation disturbance includes at least the following two aspects:

[0108] A. Minimum FM time: The minimum time that the frequency must pass through the FM dead zone once.

[0109] This requirement is to prevent the frequency from crossing the dead zone in a short period of time before the new energy field has time to respond, thereby affecting the objectivity of the assessment indicators.

[0110] B. Maximum frequency deviation: The maximum amplitude of the frequency deviation reached within the time period of a frequency modulation action.

[0111] This requirement is to ensure that the primary frequency modulation can have a sufficiently large excitation, avoid normal frequency fluctuations, and ensure calculation accuracy.

[0112] If the frequency deviation is greater than the set maximum amplitude within the time period of a frequency modulation action, and the duration of the frequency after the sudden change exceeds the shortest duration of a frequency modulation dead zone, it is considered an effective disturbance.

[0113] From the perspective of the actual stable operation of the power grid, the initial period of the primary frequency regulation process should pursue speed and effectiveness, and quickly adjust the frequency to a limited range; in the later period, it should pursue unbiasedness to ensure smooth frequency changes.

[0114] The performance indicators of new energy primary frequency regulation include: lag time, output response index, power contribution index, and response deviation, which are defined as follows:

[0115] 12-1) Lag time τ(s):

[0116] It is the time required from the grid frequency reaching the primary frequency regulation action value to the unit output starting to change in the direction of frequency recovery. The smaller the lag time, the faster the regulation speed.

[0117] 12-2) Output response index ΔP ％ (%):

[0118] From the time the frequency deviation exceeds the dead zone until the frequency deviation returns to the dead zone (if the time exceeds 60 seconds, it will be calculated as 60 seconds), the percentage of the actual maximum output adjustment of the unit in different frequency regulation action periods to the theoretical maximum output adjustment,

[0119]

[0120] In the above formula:

[0121] ΔP％ : represents the primary frequency modulation output response index;

[0122] ΔP S : Indicates the actual maximum output adjustment of a frequency regulation;

[0123] ΔP E : Indicates the theoretical maximum output adjustment of a single frequency modulation.

[0124] 12-3) Electricity Contribution Index Q ％ (%):

[0125] During the period of the unit's primary frequency regulation, the actual power contribution of the unit's primary frequency regulation accounts for the percentage of the theoretical power contribution.

[0126]

[0127] Where:

[0128] Q ％ : Unit primary frequency regulation power contribution index;

[0129] ΔQ S : The actual amount of electricity contributed by the unit's primary frequency regulation;

[0130] ΔQ E : Theoretical integrated power of the unit's primary frequency regulation.

[0131] 12-4) Response deviation k ％ (%):

[0132] The average value of the difference between the actual output adjustment of the unit and the theoretical output contribution during a frequency regulation action period, which is the difference between the high-frequency output reduction or the low-frequency output increase, as a percentage of the theoretical maximum output adjustment.

[0133]

[0134] In the above formula:

[0135] κ ％ : Indicates the primary frequency modulation response deviation;

[0136] ΔP V : It represents the average value of the difference between the actual output adjustment of the unit and the theoretical output contribution during a frequency regulation operation period, which is the difference between the high-frequency output reduction or the low-frequency output increase.

[0137] ΔP E : Indicates the theoretical maximum output adjustment of a single frequency modulation.

[0138] Step 2: In view of the low probability of large frequency disturbances in the actual operation of the power grid, it is difficult to conduct regular monitoring and management of the primary frequency regulation performance of renewable energy under large frequency difference disturbances. The RTU actively sends primary frequency regulation remote monitoring instructions and perception instructions, and the PMU synchronously collects dynamic data of the renewable energy field. The primary frequency regulation performance of the renewable energy field is remotely monitored and evaluated, and the primary frequency regulation performance of the renewable energy field is actively perceived.

[0139] Actively sensing the primary frequency regulation performance of the new energy field includes: actively sensing the dead zone of the primary frequency regulation of the new energy field, actively sensing the amplitude limit of the primary frequency regulation of the new energy field, and actively sensing the dynamic performance of the primary frequency regulation of the new energy field. For the specific implementation process, see Figure 2 , including the following:

[0140] The new energy field side is put into primary frequency modulation remote monitoring permission signal;

[0141] The dispatching side issues a frequency regulation remote monitoring input instruction to the new energy field;

[0142] After the new energy farm receives the primary frequency regulation remote monitoring activation command from the dispatching side, the primary frequency regulation control system of the new energy farm switches to the remote monitoring mode, and the primary frequency regulation function stops actual operation and no longer responds to changes in the grid frequency;

[0143] The dispatching side verifies whether the test is allowed; if so, it issues a frequency modulation test perception instruction to the new energy station; it should be noted that the frequency modulation test perception instruction is one of a frequency modulation dead zone test perception instruction, a frequency modulation limit test perception instruction, and a frequency modulation dynamic performance test perception instruction;

[0144] The new energy field automatically responds to the load according to the primary frequency regulation test perception instruction issued by the dispatching side; until it receives the primary frequency regulation remote monitoring exit instruction issued by the dispatching side, the primary frequency regulation control system of the new energy field switches to normal operation mode and responds to the changes in the grid frequency; the primary frequency regulation remote monitoring ends.

[0145] It should be noted that testing is allowed when the dispatching side receives a telesignaling signal of 1.

[0146] For example, in one embodiment of the present invention, active sensing of the primary frequency modulation dead zone of the new energy field is performed, and the specific implementation process is as follows:

[0147] 21) In the dispatch support system, the primary frequency modulation remote monitoring input command and the primary frequency modulation dead zone sensing command are transmitted to the new energy station using "DL / T 634.5104 Telecontrol Equipment and Systems: Part 5-104 Transmission Protocol Using Standard Transmission Protocol Subset IEC60870-5-101 Network Access";

[0148] After the new energy farm receives the primary frequency regulation remote monitoring activation command from the dispatching side, the primary frequency regulation control system of the new energy farm switches to the remote monitoring mode, and the primary frequency regulation function stops actual operation and no longer responds to changes in the grid frequency;

[0149] After the new energy field receives the primary frequency regulation dead zone perception instruction from the dispatching side, it maintains the pulse time length at 120 seconds, and the analog frequency signal in the primary frequency regulation control system changes from 49.7Hz to 50.3Hz at a rate of 0.005Hz / s. During this period, the primary frequency regulation control system should analyze and calculate the primary frequency regulation load instruction in real time based on the disturbance frequency data issued by the dispatching side, and send the analog frequency signal and the analyzed and calculated primary frequency regulation load instruction to the dispatching master station in real time; it should be noted that the dispatching side sends the disturbance frequency data at the same time as sending the primary frequency regulation dead zone perception instruction; the primary frequency regulation load instruction refers to the active power of the primary frequency regulation control object;

[0150] After the new energy farm receives the primary frequency regulation remote monitoring exit instruction from the dispatching side, the primary frequency regulation control system of the new energy farm switches to normal operation mode and responds to changes in the grid frequency;

[0151] The dispatching master station evaluates the primary frequency regulation dead zone parameters of the new energy field based on the new energy field simulation frequency signal and primary frequency regulation load instructions recorded during the test, and evaluates whether the primary frequency regulation characteristic function definition of the new energy field meets the system requirements.

[0152] It should be noted that when the frequency is within the primary frequency regulation dead zone and the unit does not make any adjustments, the primary frequency regulation load command is 0. Therefore, the change in the primary frequency regulation load command can be used to evaluate whether the primary frequency regulation dead zone parameter settings are reasonable.

[0153] For example, in one embodiment of the present invention, active sensing of the primary frequency modulation amplitude limit of the new energy field is performed, and the specific implementation process is as follows:

[0154] 22) In the dispatch support system, the primary frequency modulation remote monitoring input command and the primary frequency modulation limit sensing command are transmitted to the new energy station using "DL / T 634.5104 Telecontrol Equipment and Systems: Part 5-104 Transmission Protocol Using Standard Transmission Protocol Subset IEC60870-5-101 Network Access";

[0155] After the new energy farm receives the primary frequency regulation remote monitoring activation command from the dispatching side, the primary frequency regulation control system of the new energy farm switches to the remote monitoring mode, and the primary frequency regulation function stops actual operation and no longer responds to changes in the grid frequency;

[0156] After the new energy field receives the primary frequency regulation limit sensing instruction issued by the dispatching side, the primary frequency regulation control system of the new energy field analyzes the disturbance frequency data issued by the dispatching side and automatically performs a load response "increase" (or "decrease"); during this period, the primary frequency regulation control system should analyze and calculate the primary frequency regulation load instruction in real time according to the disturbance frequency, and send the disturbance frequency executed by the primary frequency regulation control system and the active power of the primary frequency regulation control object of the new energy field to the dispatching master station in real time; it should be noted that the dispatching side sends the disturbance frequency data at the same time when sending the primary frequency regulation limit sensing instruction;

[0157] After the new energy farm receives the primary frequency regulation remote monitoring exit instruction from the dispatching side, the primary frequency regulation control system of the new energy farm switches to normal operation mode and responds to changes in the grid frequency;

[0158] The dispatching master station analyzes and calculates the primary frequency regulation limit parameters of the new energy field based on the disturbance frequency and active power of the primary frequency regulation control object recorded during the test, and evaluates whether the definition of the primary frequency regulation limit parameters of the new energy field meets the system requirements.

[0159] It should be noted that the primary frequency regulation limit of the new energy field stipulates the maximum adjustable amplitude value (load instruction). The calculated primary frequency regulation load instruction (target output of the unit) can be compared with the specified primary frequency regulation limit parameters to evaluate whether the primary frequency regulation limit parameters are reasonable.

[0160] For example, in one embodiment of the present invention, the dynamic performance of the primary frequency modulation of the new energy field is actively sensed, and the specific implementation process is as follows:

[0161] 23) In the dispatch support system, the primary frequency modulation remote monitoring instructions and disturbance frequency are transmitted to the new energy station using "DL / T 634.5104 Telecontrol Equipment and Systems: Part 5-104 Transmission Protocol Using Standard Transmission Protocol Subset IEC60870-5-101 Network Access";

[0162] After the new energy farm receives the primary frequency regulation remote monitoring activation command from the dispatching side, the primary frequency regulation control system of the new energy farm switches to the remote monitoring mode, and the primary frequency regulation function stops actual operation and no longer responds to changes in the grid frequency;

[0163] After the new energy field receives the primary frequency regulation dynamic performance perception instruction issued by the dispatching side, the primary frequency regulation control system of the new energy field analyzes the disturbance frequency data issued by the dispatching side and automatically performs load response "increase" (or "decrease"); during this period, the primary frequency regulation control system should analyze and calculate the primary frequency regulation load instruction in real time according to the disturbance frequency, and send the disturbance frequency executed by the primary frequency regulation control system and the active power of the primary frequency regulation control object of the new energy field to the dispatching master station in real time; it should be noted that the dispatching side sends the disturbance frequency data at the same time when sending the primary frequency regulation dynamic performance perception instruction;

[0164] After the new energy farm receives the primary frequency regulation remote monitoring exit command from the dispatching side, the primary frequency regulation control system of the new energy farm switches to normal operation mode and responds to changes in the grid frequency;

[0165] The dispatching master station calculates and analyzes the performance indicators such as the primary frequency regulation lag time, output response index, power contribution index, and response deviation of the new energy field based on the disturbance frequency signal and the active power of the primary frequency regulation control object recorded during the test, and evaluates whether the dynamic performance of the primary frequency regulation of the new energy field meets the system requirements.

[0166] In another embodiment of the present invention, it further includes actively sensing the primary frequency regulation performance of the new energy field in response to power grid accidents. For the specific implementation process, see Figure 3 ,include:

[0167] The new energy field side is put into primary frequency modulation remote monitoring permission signal;

[0168] The dispatching side issues a frequency regulation remote monitoring input instruction to the new energy field;

[0169] After the new energy farm receives the primary frequency regulation remote monitoring activation command from the dispatching side, the primary frequency regulation control system of the new energy farm switches to the remote monitoring mode, and the primary frequency regulation function stops actual operation and no longer responds to changes in the grid frequency;

[0170] The dispatching side verifies whether the test is allowed; if so, it sends a high-precision frequency simulation curve for frequency modulation to the new energy field;

[0171] New energy field acquires, analyzes and verifies the received high-precision simulated frequency curve of primary frequency modulation;

[0172] The dispatching side verifies whether the test is allowed; if so, it issues a frequency modulation simulation drill instruction to the new energy field;

[0173] The primary frequency regulation control system of the new energy field automatically responds to the load according to the high-precision simulated frequency curve of the primary frequency regulation issued, until it receives the primary frequency regulation remote monitoring exit instruction issued by the dispatching side. The primary frequency regulation control system of the new energy field switches to normal operation mode and responds to changes in the grid frequency; the primary frequency regulation remote monitoring ends.

[0174] In one embodiment of the present invention, frequency data from past and future power grid accidents are used as samples to simulate the primary frequency regulation performance of a new energy field under anticipated faults. This allows for proactive sensing of the primary frequency regulation performance of the new energy field in response to various power grid accidents, such as unit tripping, UHV faults, and DC blocking. The specific implementation process is as follows:

[0175] In the dispatching support system, simulation drill samples are defined based on frequency curves under past and future power grid accidents. The simulation drill sample content includes key information such as file issuance time, file validity period, frequency value, checksum, etc. The frequency data time length is 100 seconds, 20 seconds before the fault, and 80 seconds after the fault. The frequency interval is no more than 100ms.

[0176] In the dispatching support system, the "DL / T 634.5104 Telecontrol Equipment and Systems: Part 5-104 Transmission Protocol Using IEC60870-5-101 Network Access of the Standard Transmission Protocol Subset" is used to transmit the frequency modulation simulation drill instructions to the new energy station; the "Power System Real-time Dynamic Monitoring System Part 2: Data Transmission Protocol" is used to transmit the high-precision frequency modulation simulation drill samples to the new energy station.

[0177] After the new energy farm receives the primary frequency regulation remote monitoring activation command from the dispatching side, the primary frequency regulation control system of the new energy farm switches to the remote monitoring mode, and the primary frequency regulation function stops actual operation and no longer responds to changes in the grid frequency;

[0178] After the new energy field receives the primary frequency modulation simulation exercise instruction issued by the dispatching side, the primary frequency modulation control system of the new energy field analyzes the disturbance frequency data issued by the dispatching side and automatically performs a load response "increase" (or "decrease"); during this period, the primary frequency modulation control system should analyze and calculate the primary frequency modulation load instruction in real time according to the disturbance frequency, and send the disturbance frequency data executed by the primary frequency modulation control system and the active power of the primary frequency modulation control object of the new energy field to the dispatching master station in real time;

[0179] After the new energy farm receives the primary frequency regulation remote monitoring exit instruction from the dispatching side, the primary frequency regulation control system of the new energy farm switches to normal operation mode and responds to changes in the grid frequency;

[0180] The dispatching master station calculates and analyzes the performance indicators such as the primary frequency regulation lag time, output response index, power contribution index and response deviation of the new energy field based on the disturbance frequency signal and the active power of the primary frequency regulation control object recorded during the test, evaluates whether the dynamic performance of the primary frequency regulation of the new energy field meets the system requirements, and perceives the primary frequency regulation performance of the new energy field under power grid accidents in advance.

[0181] It should be noted that power grid accidents include but are not limited to: unit tripping, UHV faults and DC interlocking, etc.

[0182] In another embodiment of the present invention, the steps of issuing a primary frequency modulation active power standby control instruction of the new energy farm according to the operation requirements of the power grid, monitoring the dynamic change process of the active power of the new energy farm in real time, and analyzing and evaluating the low-frequency load-increasing capability of the new energy farm are further included. The specific implementation process is as follows:

[0183] In the dispatch support system, the primary frequency modulation active reserve activation / deactivation command is transmitted to the new energy field using the "DL / T 634.5104 Telecontrol Equipment and Systems: Part 5-104 Transmission Protocol Using Standard Transmission Protocol Subset IEC60870-5-101 Network Access";

[0184] After the new energy field receives the primary frequency regulation active reserve capacity, the primary frequency regulation control system of the new energy field reserves the upper regulation active reserve capacity to meet the low-frequency load increase requirements of the power grid;

[0185] After the new energy field receives the primary frequency regulation active reserve exit, the primary frequency regulation control system of the new energy field does not adjust the active reserve capacity on the reserve;

[0186] From the dispatch support system, obtain the active reserve on / off status and active power of the primary frequency modulation of the new energy field collected synchronously by the PMU, analyze and calculate the active reserve deviation rate, and evaluate whether the active reserve of the primary frequency modulation of the new energy field meets the system requirements.

[0187]

[0188] In the above formula:

[0189] ΔP S : Indicates the actual output adjustment after the primary frequency regulation active reserve is put into use;

[0190] ΔP E : Indicates the maximum output adjustment of the frequency modulation theory

[0191] The online active monitoring and evaluation method for the primary frequency regulation performance of renewable energy fields for new power systems provided in this embodiment moves from online monitoring of the primary frequency regulation performance of renewable energy fields in the "passive mode of tracking grid frequency" to active perception and simulation exercises of the primary frequency regulation performance of renewable energy fields, comprehensively improving the primary frequency regulation margin of the grid, actively building a solid first line of defense for frequency stability, and better ensuring the safe production and operation of the grid.

[0192] Example 2

[0193] This embodiment provides an online active monitoring and evaluation system for the primary frequency regulation performance of a new energy field, which is connected to the RTU and PMU of the new energy field through a dispatching data network to implement the online active monitoring and evaluation method for the primary frequency regulation performance of the new energy field of the embodiment, see Figure 1 ,include,

[0194] The primary frequency regulation performance online monitoring and evaluation module is used to monitor the dynamic changes of the grid frequency and new energy field data online, and evaluate the reliability and dynamic response performance of the primary frequency regulation of the new energy field;

[0195] The module for online active testing and evaluation of primary frequency regulation performance is used to send disturbance frequency data to the renewable energy field, proactively detecting the field's primary frequency regulation performance under frequency disturbances; and to simulate power grid accidents and proactively detect the field's primary frequency regulation performance in response to grid accidents.

[0196] The data acquisition and processing module is used to obtain the new energy field data collected by the remote measurement and control device and the synchronous phasor measurement device from the dispatching support system; and is used to issue a frequency modulation test perception instruction and a frequency modulation simulation exercise instruction to the new energy field.

[0197] In one embodiment, the data acquisition and processing module includes:

[0198] Steady-state data acquisition and processing module, used to obtain and send a frequency modulation test perception instruction and a frequency modulation simulation exercise instruction to the new energy field;

[0199] The dynamic data acquisition and processing module is used to collect dynamic data such as grid connection point power, load instructions, frequency, etc. sent in real time by the PMU of the new energy field based on the GB / T 26865.2-2011 and Q / GDW 131-2006 communication protocols.

[0200] In one embodiment, the primary frequency modulation performance online active testing and evaluation module includes:

[0201] The primary frequency modulation dead zone test module is used to actively send a primary frequency modulation remote monitoring instruction and a primary frequency modulation dead zone test perception instruction to the new energy field using a remote measurement and control device; receive the simulated frequency of the new energy field during the test period and the calculated primary frequency modulation load instruction; and evaluate the primary frequency modulation dead zone parameters of the new energy field based on the received information;

[0202] The primary frequency modulation amplitude limiting test module is used to actively send a primary frequency modulation remote monitoring instruction and a primary frequency modulation amplitude limiting test perception instruction to the new energy field using a remote measurement and control device; receive the disturbance frequency executed by the new energy field during the test and the active power of the primary frequency modulation control object of the new energy field; and evaluate the primary frequency modulation amplitude limiting parameters of the new energy field based on the received information;

[0203] The primary frequency modulation dynamic performance test module is used to actively send primary frequency modulation remote monitoring instructions and primary frequency modulation dynamic performance test perception instructions to the new energy field using a remote measurement and control device; receive the disturbance frequency executed by the new energy field during the test and the active power of the primary frequency modulation control object of the new energy field; and calculate the primary frequency modulation lag time, output response index, power contribution index and response deviation of the new energy field based on the received information;

[0204] The primary frequency regulation simulation and drill module is used to simulate and drill the primary frequency regulation performance of renewable energy fields under anticipated faults using past and future grid accident data as samples, so as to perceive in advance the primary frequency regulation performance of renewable energy fields in response to various grid accidents such as unit tripping, ultra-high voltage faults, and DC lockouts, and tap the potential of primary frequency regulation in renewable energy fields.

[0205] The primary frequency regulation active control module is used to issue the primary frequency regulation active standby control instructions of the new energy field according to the needs of power grid operation, monitor the dynamic changes of the active power of the new energy field online, and analyze and evaluate the low-frequency load increase capability of the new energy field.

[0206] Example 3

[0207] This embodiment provides a computer-readable memory storing one or more programs, wherein the one or more programs include instructions, which, when executed by a computing device, enable the computing device to perform an online active monitoring and evaluation method for the primary frequency regulation performance of a new energy field.

[0208] Example 4

[0209] This embodiment provides a device, including one or more processors, one or more memories, and one or more programs, wherein the one or more programs are stored in the one or more memories and are configured to be executed by the one or more processors, and the one or more programs include instructions for executing a method for online active monitoring and evaluation of primary frequency regulation performance of a new energy field.

[0210] Those skilled in the art will appreciate that the embodiments of the present application can be provided as methods, systems, or computer program products. Therefore, the present application can adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application can adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to magnetic disk storage, CD-ROM, optical storage, etc.) that contain computer-usable program code.

[0211] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the steps in the process. Figure 1 a process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0212] These computer program instructions may also be stored in a computer readable memory that can direct a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 a process or multiple processes and / or boxes Figure 1 The function specified in one or more boxes.

[0213] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operational steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing the instructions executed on the computer or other programmable device for implementing the process. Figure 1 a process or multiple processes and / or boxes Figure 1 A step that specifies a function in one or more boxes.

[0214] The above are merely embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention are included in the scope of the claims of the present invention to be approved.

Claims

1. A method for online active monitoring and evaluation of primary frequency regulation performance of a new energy field, characterized in that: include: Obtain new energy field data collected by remote measurement and control devices and synchronized phasor measurement devices from the dispatch support system to evaluate the reliability and dynamic response performance of the primary frequency regulation of the new energy field; Send disturbance frequency data to the new energy field and actively sense the primary frequency regulation performance of the new energy field under frequency disturbance, including: Use the remote measurement and control device to actively send a frequency modulation remote monitoring instruction to the new energy field; After the new energy field receives the primary frequency regulation remote monitoring input command, the primary frequency regulation control system of the new energy field switches to the remote monitoring mode, and the primary frequency regulation function stops actual operation and no longer responds to changes in the grid frequency; Sending a primary frequency modulation test perception instruction and disturbance frequency data to the new energy field; the primary frequency modulation test perception instruction is any one of a primary frequency modulation dead zone test perception instruction, a primary frequency modulation limit test perception instruction, and a primary frequency modulation dynamic performance test perception instruction; The new energy field automatically responds to loads based on the primary frequency modulation test sensing instructions. The primary frequency modulation control system of the new energy field switches to normal operating mode until it receives the primary frequency modulation remote monitoring exit instruction. Calculate the primary frequency regulation performance of the new energy field based on the result data recorded during the test; Conduct simulation drills on power grid accidents and actively perceive the primary frequency regulation performance of new energy fields in response to power grid accidents.

2. The method for online active monitoring and evaluation of primary frequency regulation performance of a new energy field according to claim 1 is characterized in that: The reliability assessment of the primary frequency regulation of the renewable energy field includes: calculating the operation rate of the primary frequency regulation of the renewable energy field based on the active power of the renewable energy field and the on / off status of the primary frequency regulation; The evaluation of the dynamic response performance of the primary frequency regulation of the renewable energy field includes: calculating the primary frequency regulation performance indicators according to the active power of the renewable energy field and the grid frequency, including: lag time, output response index, power contribution index and response deviation.

3. The method for online active monitoring and evaluation of primary frequency regulation performance of a new energy field according to claim 2 is characterized in that: The calculation of the primary frequency regulation operation rate of the new energy field is as follows: Calculate the active load rate of the new energy field based on the dynamic change process of the active power of the new energy field; Statistics are collected on the grid connection time of the new energy farm and the duration of the operation of the primary frequency regulation system of the new energy farm when the active load rate is greater than the lower limit of the primary frequency regulation operation; The monthly commissioning rate of frequency regulation is calculated as follows: Monthly operation rate of primary frequency regulation = (monthly operation time of primary frequency regulation system / monthly grid-connected time of new energy field) × 100%.

4. The method for online active monitoring and evaluation of primary frequency regulation performance of a new energy field according to claim 2 is characterized in that: The calculation of the primary frequency modulation performance index includes: Online monitoring of the dynamic changes in grid frequency and active power of renewable energy fields, capturing effective primary frequency modulation disturbances. When effective primary frequency modulation disturbances occur in the grid, analysis and evaluation of the dynamic response performance of the primary frequency modulation of renewable energy fields are performed. The lag time is the time required from the grid frequency changing to reaching the primary frequency regulation action value to the unit output starting to change in the direction of frequency recovery; The output response index is calculated as follows: Where ΔP ％ Indicates the primary frequency modulation output response index, ΔP S Indicates the primary frequency modulation active power rise time and the actual maximum output adjustment within the adjustment time, ΔP E Indicates the primary frequency modulation active power rise time and the theoretical maximum output adjustment within the adjustment time; The power contribution index is calculated as follows: Among them, Q ％ Indicates the unit's primary frequency regulation power contribution index, ΔQ S Indicates the actual power contribution of the unit during the frequency regulation period, ΔQ E Indicates the theoretical integrated power of the unit's primary frequency regulation; the primary frequency regulation action period refers to the time from when the frequency deviation exceeds the dead zone to when the frequency deviation returns to the dead zone range; The response deviation is calculated as follows: Among them, κ ％ Indicates the primary frequency modulation response deviation, ΔP V It represents the average value of the difference between the actual output adjustment of the unit and the theoretical output contribution during a frequency regulation operation period, which is the difference between the high-frequency output reduction or the low-frequency output increase. E Indicates the theoretical maximum output adjustment of a single frequency modulation.

5. The method for online active monitoring and evaluation of primary frequency regulation performance of a new energy field according to claim 1 is characterized in that: If a frequency modulation test perception instruction is a frequency modulation dead zone test perception instruction, then, After receiving the primary frequency modulation dead zone test perception command, the new energy field maintains the pulse time length at 120 seconds, and the analog frequency signal in the primary frequency modulation control system changes from 49.7Hz to 50.3Hz at a rate of 0.005Hz / s; During the frequency change, the primary frequency modulation control system calculates the primary frequency modulation load instruction in real time according to the disturbance frequency, and sends the simulated frequency signal and the calculated primary frequency modulation load instruction to the dispatching side in real time; the primary frequency modulation load instruction is the active power of the primary frequency modulation control object; The dispatching side evaluates the primary frequency regulation dead zone parameters of the new energy field based on the simulated frequency signal of the new energy field and the primary frequency regulation load instruction recorded during the test.

6. The method for online active monitoring and evaluation of primary frequency regulation performance of a new energy field according to claim 1 is characterized in that: If a frequency modulation test perception instruction is a frequency modulation limit test perception instruction, then, After the new energy field receives the primary frequency modulation limit test perception instruction, the primary frequency modulation control system of the new energy field analyzes the disturbance frequency data and automatically increases or decreases the load response; During this period, the primary frequency regulation control system calculates the primary frequency regulation load instruction in real time according to the disturbance frequency, and sends the disturbance frequency executed by the primary frequency regulation control system and the active power of the primary frequency regulation control object of the new energy field to the dispatching side in real time; the primary frequency regulation load instruction is the active power of the primary frequency regulation control object; The dispatching side evaluates the primary frequency regulation limiting parameters of the new energy field based on the disturbance frequency and active power of the primary frequency regulation control object recorded during the test.

7. The method for online active monitoring and evaluation of primary frequency regulation performance of a new energy field according to claim 1 is characterized in that: If a frequency modulation test perception instruction is a frequency modulation dynamic performance test perception instruction, then, After the new energy field receives the primary frequency modulation dynamic performance test perception instruction, the primary frequency modulation control system of the new energy field analyzes the disturbance frequency data and automatically increases or decreases the load response; During this period, the primary frequency regulation control system calculates the primary frequency regulation load instruction in real time according to the disturbance frequency, and sends the disturbance frequency executed by the primary frequency regulation control system and the active power of the primary frequency regulation control object of the new energy field to the dispatching side in real time; the primary frequency regulation load instruction is the active power of the primary frequency regulation control object; The dispatching side calculates the primary frequency regulation lag time, output response index, power contribution index and response deviation of the new energy field based on the disturbance frequency and active power of the primary frequency regulation control object recorded during the test.

8. The method for online active monitoring and evaluation of primary frequency regulation performance of a new energy field according to claim 1 is characterized in that: The simulation drills for power grid accidents and the active perception of the primary frequency regulation performance of the new energy field in response to power grid accidents include: Issue a frequency modulation remote monitoring instruction to the new energy field; After the new energy field receives the primary frequency regulation remote monitoring input command, the primary frequency regulation control system of the new energy field switches to the remote monitoring mode, and the primary frequency regulation function stops actual operation and no longer responds to changes in the grid frequency; Send a frequency regulation simulation drill instruction and a frequency regulation simulation frequency curve under power grid accidents to the new energy field; New energy field analysis frequency modulation simulation frequency, automatic load response; During this period, the primary frequency regulation control system calculates the primary frequency regulation load instruction in real time according to the disturbance frequency, and sends the disturbance frequency executed by the primary frequency regulation control system and the active power of the primary frequency regulation control object of the new energy field to the dispatching side in real time; until the primary frequency regulation remote monitoring exit instruction is received, the primary frequency regulation control system of the new energy field switches to the normal operation mode; the said primary frequency regulation load instruction is the active power of the primary frequency regulation control object; The dispatching side calculates the primary frequency regulation lag time, output response index, power contribution index and response deviation of the new energy field based on the disturbance frequency and active power of the primary frequency regulation control object recorded during the test.

9. The method for online active monitoring and evaluation of primary frequency regulation performance of a new energy field according to claim 8 is characterized in that: The power grid accident includes any of the following: Unit tripping, UHV fault and DC blocking.

10. The method for online active monitoring and evaluation of primary frequency regulation performance of a new energy field according to claim 1, characterized in that: It also includes the steps of actively controlling the new energy field according to the needs of grid operation, as follows: Issue a frequency regulation active power standby activation / deactivation command to the new energy field; After the new energy field receives the primary frequency regulation active reserve capacity, the primary frequency regulation control system of the new energy field reserves the upper regulation active reserve capacity; After the new energy field receives the primary frequency regulation active reserve exit, the primary frequency regulation control system of the new energy field does not adjust the active reserve capacity on the reserve; Obtain the active reserve on / off status and active power of the primary frequency modulation of the new energy field collected synchronously by the synchronized phasor measurement device, and calculate the active reserve deviation rate as follows: Among them, ΔG ％ Indicates the active reserve deviation rate, ΔP S It indicates the actual output adjustment after the active reserve of the new energy field is put into use, ΔP E Indicates the maximum adjustment amount of the primary frequency regulation active reserve of the new energy field.

11. A system for online active monitoring and evaluation of primary frequency regulation performance of a new energy field, for implementing the method for online active monitoring and evaluation of primary frequency regulation performance of a new energy field according to any one of claims 1 to 10, connected to a remote measurement and control device and a synchronized phasor measurement device of the new energy field via a scheduling support system, characterized in that: include: Data acquisition and processing module, used to obtain new energy field data collected by remote measurement and control devices and synchronized phasor measurement devices from the dispatch support system; Also, it is used to send a frequency modulation test perception instruction and a frequency modulation simulation drill instruction to the new energy field; The primary frequency regulation performance online monitoring and evaluation module is used to monitor the dynamic changes of the grid frequency and new energy field data online, and evaluate the reliability and dynamic response performance of the primary frequency regulation of the new energy field; The primary frequency regulation performance online active testing and evaluation module is used to send disturbance frequency data to the new energy field and actively perceive the primary frequency regulation performance of the new energy field under frequency disturbance; In addition, simulation drills for power grid accidents are conducted to actively perceive the primary frequency regulation performance of new energy fields in response to power grid accidents.

12. The online active monitoring and evaluation system for primary frequency regulation performance of a new energy field according to claim 11 is characterized in that: The data acquisition and processing module includes: The steady-state data acquisition and processing module is used by the dispatch support system to obtain and issue a frequency modulation test perception instruction and a frequency modulation simulation exercise instruction to the new energy field; The dynamic data acquisition and processing module is used for the dispatching support system to obtain the new energy field data collected by the synchronous phasor measurement device and the primary frequency regulation load instructions during the test; the new energy field data includes the active power of the new energy field and the primary frequency regulation on / off status.

13. The online active monitoring and evaluation system for primary frequency regulation performance of a new energy field according to claim 11 is characterized in that: The primary frequency regulation performance online monitoring and evaluation module is specifically used to: Calculate the primary frequency regulation operation rate of the new energy field based on the active power of the new energy field and the primary frequency regulation on / off status; In addition, based on the active power of the new energy field and the grid frequency, the primary frequency regulation performance indicators are calculated, including: lag time, output response index, power contribution index and response deviation.

14. The online active monitoring and evaluation system for primary frequency regulation performance of a new energy field according to claim 11 is characterized in that: The primary frequency modulation performance online active test and evaluation module includes: The primary frequency modulation dead zone test module is used to actively send a primary frequency modulation remote monitoring instruction and a primary frequency modulation dead zone test perception instruction to the new energy field using a remote measurement and control device; receive the simulated frequency of the new energy field during the test period and the calculated primary frequency modulation load instruction; and evaluate the primary frequency modulation dead zone parameters of the new energy field based on the received information; The primary frequency modulation amplitude limiting test module is used to actively send a primary frequency modulation remote monitoring instruction and a primary frequency modulation amplitude limiting test perception instruction to the new energy field using a remote measurement and control device; receive the disturbance frequency executed by the new energy field during the test and the active power of the primary frequency modulation control object of the new energy field; and evaluate the primary frequency modulation amplitude limiting parameters of the new energy field based on the received information; The primary frequency modulation dynamic performance test module is used to actively send primary frequency modulation remote monitoring instructions and primary frequency modulation dynamic performance test perception instructions to the new energy field using a remote measurement and control device; receive the disturbance frequency executed by the new energy field during the test and the active power of the primary frequency modulation control object of the new energy field; and calculate the primary frequency modulation lag time, output response index, power contribution index and response deviation of the new energy field based on the received information; The primary frequency regulation simulation drill module is used to send the primary frequency regulation simulation drill instruction and the frequency regulation simulation frequency curve under the power grid accident to the new energy field; receive the disturbance frequency executed by the new energy field during the test and the active power of the primary frequency regulation control object of the new energy field; and calculate the primary frequency regulation lag time, output response index, power contribution index and response deviation of the new energy field based on the received information; The primary frequency regulation active control module is used to issue the primary frequency regulation active standby activation / deactivation command to the new energy field according to the needs of the power grid operation; obtain the primary frequency regulation active standby activation / deactivation status and active power of the new energy field synchronously collected by the synchronous phasor measurement device, and calculate the active standby deviation rate.

15. A computer-readable memory storing one or more programs, the one or more programs comprising instructions which, when executed by a computing device, cause the computing device to perform the method of any one of claims 1 to 10.

16. A device comprising one or more processors, one or more memories, and one or more programs, wherein the one or more programs are stored in the one or more memories and configured to be executed by the one or more processors, and the one or more programs include instructions for executing the method according to any one of claims 1 to 10.

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