Active Support Control Method and Related Equipment for New Energy Power Stations with Multiple Energy Sources

Abstract

The present application provides a multi-energy-source new energy power station active support control method and related equipment. The present application can calculate the rapid voltage regulation reactive power command, the inertia response active power command, and the primary frequency modulation active power command of the target power transmission system; and when frequency changes and voltage changes occur in the power grid, the active power command and the reactive power command can be superimposed on the active power command and the reactive power command of the new energy power station equipment according to a certain strategy, and the active power command and the reactive power command of the new energy power station equipment are limited by the operation margin of the new energy power station. The present application can provide effective active and reactive power support for the power grid during frequency and voltage fluctuations, and at the same time, reasonable power distribution can be carried out within the new energy power station, which can effectively regulate the voltage and frequency of the target power transmission system and effectively provide a control strategy for the voltage and frequency support of the target power transmission system.

Description

Technical Field

[0001] The present application relates to the technical field of power system regulation, and particularly relates to an active support control method for a multi-energy source new energy power station and related equipment thereof. Background Art

[0002] In the actual application process, with the development of technology, the form of the previous new energy power station has evolved from a single-energy source power station to a multi-energy source new energy power station, that is, a wind farm or a photovoltaic power station that solely uses wind energy or light energy as the main energy source, and a reactive power compensation device can be configured in the new energy power station as the reactive power source of the power station.

[0003] Like a single-energy source new energy power station, a multi-energy source new energy power station needs to provide active support functions such as primary frequency regulation, inertia response, and rapid voltage regulation. However, its active support strategy is not clear, and the power distribution strategy among various energy sources during active support is a problem worthy of research. Summary of the Invention

[0004] The present application aims to solve at least one of the above technical defects. In view of this, the present application provides an active support control method, device, equipment, and readable storage medium for a multi-energy source new energy power station, which are used to solve the technical defect that it is difficult to control the voltage and power of a multi-energy source new energy power station in a power transmission system in the prior art.

[0005] An active support control method for a multi-energy source new energy power station includes:

[0006] Determine whether the target power transmission system has a voltage change or a frequency change;

[0007] If the target power transmission system has a voltage change, then determine whether the target power transmission system has a rapid voltage regulation function;

[0008] If the target power transmission system has a rapid voltage regulation function, then calculate the rapid voltage regulation reactive power of the target power transmission system;

[0009] Superimpose the rapid voltage regulation reactive power of the target power transmission system on the reactive power of the reactive power compensation device, and generate a reactive power command for the reactive power compensation device;

[0010] Limit the voltage of the target power transmission system through the reactive power command of the reactive power compensation device;

[0011] If the target power transmission system has a frequency change, then determine whether the target power transmission system has and enables an inertia response function;

[0012] If the target power transmission system has the inertia response function enabled, determine whether the frequency change range of the target power transmission system exceeds the frequency dead zone range and meets a preset first condition;

[0013] If the frequency change range of the target power transmission system exceeds the frequency dead zone range and meets the preset first condition, calculate the inertia response active power command of the target power transmission system;

[0014] Superimpose the inertia response active power of the target power transmission system on the active power of the energy storage of the new energy power station, and generate the active power command of the energy storage of the new energy power station;

[0015] Limit the active power command of the energy storage through the upper and lower limits of the active power of the new energy power station energy storage;

[0016] If the inertia response function of the target power transmission system is not enabled, determine whether the target power transmission system has and enables the primary frequency regulation function;

[0017] If the target power transmission system has the primary frequency regulation function enabled, determine whether the frequency change of the target power transmission system exceeds the frequency dead zone range;

[0018] If the frequency change of the target power transmission system exceeds the frequency dead zone range, calculate the primary frequency regulation active power of the target power transmission system, and generate the primary frequency regulation active power command of the target power transmission system;

[0019] Calculate the active power adjustment margin of the target power transmission system according to the type of new energy station of the target power transmission system;

[0020] Limit the primary frequency regulation active power command according to the active power adjustment margin of the target power transmission system. After considering the margin, the limited primary frequency regulation active power command is sequentially distributed and superimposed on the original active power command in the order of energy storage, photovoltaic, and wind power, and the active power commands for the new energy power stations of the target power transmission system are generated in sequence;

[0021] Adjust the active power of the new energy power stations of the target power transmission system according to the active power commands for the new energy power stations of the target power transmission system respectively.

[0022] Preferably, the adjusting the active power of the new energy power stations of the target power transmission system according to the active power commands for the new energy power stations of the target power transmission system respectively includes:

[0023] According to the active power commands for the new energy power stations of the target power transmission system, allocate the active power margin to be adjusted to the energy storage stations of the target power transmission system for consumption;

[0024] Determine whether the energy storage station of the target power transmission system meets the active power regulation requirements of the new energy station in the target power transmission system;

[0025] If the energy storage station of the target power transmission system does not meet the active power regulation requirements of the new energy station in the target power transmission system, determine the remaining active power regulation margin to be adjusted and allocate the remaining active power regulation margin to the photovoltaic power station in the target power transmission system for consumption;

[0026] If the energy storage station of the target power transmission system meets the active power regulation requirements of the new energy station in the target power transmission system, determine that the active power regulation of the target power transmission system has been completed;

[0027] Determine whether the photovoltaic power station of the target power transmission system meets the active power regulation requirements of the new energy station in the target power transmission system;

[0028] If the photovoltaic power station of the target power transmission system does not meet the active power regulation requirements of the new energy station in the target power transmission system, determine the remaining active power regulation margin to be adjusted and allocate the remaining active power regulation margin to the wind farm in the target power transmission system for consumption;

[0029] If the photovoltaic power station of the target power transmission system meets the active power regulation requirements of the new energy station in the target power transmission system, determine that the active power regulation of the target power transmission system has been completed;

[0030] Determine whether the wind farm of the target power transmission system meets the active power regulation requirements of the new energy station in the target power transmission system;

[0031] If the wind farm of the target power transmission system meets the active power regulation requirements of the new energy station in the target power transmission system, determine that the active power regulation of the target power transmission system has been completed.

[0032] Preferably, the formula for calculating the fast voltage regulation reactive power of the target power transmission system includes:

[0033]

[0034] ΔU = U ref -U real

[0035] Among them,

[0036] ΔQ is the reactive power command. When ΔQ is positive, it means to emit capacitive reactive power. When ΔQ is negative, it means to emit inductive reactive power;

[0037] Thr1 and Thr2 are the action thresholds of the reactive power automatic voltage regulation link. Among them, Thr2 > Thr1;

[0038] P n is the rated active power of the wind turbine generator set;

[0039] k Q is the reactive power voltage regulation coefficient;

[0040] ΔU is the voltage deviation;

[0041] U0 is the AC voltage at the grid connection point when the reactive power is 0;

[0042] S sc is the system short-circuit capacity;

[0043] U real is the real-time value of the AC voltage at the grid connection point;

[0044] U ref is the reference value of the AC voltage at the grid connection point.

[0045] Preferably, the calculation formula for the inertia response active power of the target transmission system includes:

[0046]

[0047] where:

[0048] ΔP t represents the change in active power of the new energy power station, with the unit of megawatt;

[0049] T J represents the equivalent inertia time constant of the new energy power station, with the unit of second;

[0050] f N represents the rated frequency of the transmission system, with the unit of hertz;

[0051] f represents the frequency at the grid connection point of the new energy power station, with the unit of hertz;

[0052] Δf represents the frequency deviation of the transmission system, with the unit of hertz;

[0053] P t represents the active power of the new energy power station, with the unit of megawatt;

[0054] t represents time, with the unit of second.

[0055] Preferably, the calculation formula for the primary frequency regulation active power of the target transmission system includes:

[0056]

[0057] where:

[0058] ΔP trepresents the active power change of the source new energy power station, with the unit of megawatt;

[0059] K f represents the active frequency modulation coefficient;

[0060] Δf represents the frequency deviation of the power transmission system, with the unit of hertz;

[0061] f N represents the rated frequency of the power transmission system, with the unit of hertz;

[0062] P t represents the active power of the source new energy power station, with the unit of megawatt;

[0063] t represents time, with the unit of second.

[0064] A multi-energy-source new energy power station active support control device, comprising:

[0065] The first judgment unit is used to judge whether there is a voltage change or a frequency change in the target power transmission system;

[0066] The second judgment unit is used to judge whether the target power transmission system has a fast voltage regulation function when the execution result of the first judgment unit is that there is a voltage change in the target power transmission system;

[0067] The first calculation unit is used to calculate the fast voltage regulation reactive power of the target power transmission system when the execution result of the first judgment unit is that the target power transmission system has a fast voltage regulation function;

[0068] The first instruction generation unit is used to superimpose the fast voltage regulation reactive power of the target power transmission system on the reactive power of the reactive power compensation device and generate the reactive power instruction of the reactive power compensation device;

[0069] The first limiting unit is used to limit the voltage of the target power transmission system through the reactive power instruction of the reactive power compensation device;

[0070] The third judgment unit is used to judge whether the target power transmission system has an enabled inertia response function when the execution result of the second judgment unit is that there is a frequency change in the target power transmission system;

[0071] The fourth judgment unit is used to judge whether the frequency change range of the target power transmission system exceeds the frequency dead zone range and meets a preset first condition when the execution result of the third judgment unit is that the target power transmission system has an enabled inertia response function;

[0072] A second calculation unit, configured to calculate the inertia response active power of the target power transmission system when the determination result of the fourth determination unit determines that the frequency change range of the target power transmission system exceeds the frequency dead zone range and satisfies a preset first condition;

[0073] A second instruction generation unit, configured to superimpose the inertia response active power of the target power transmission system on the active power of the new energy power station and generate an active power instruction for the new energy power station;

[0074] A second limiting unit, configured to limit the power of the new energy power station of the target power transmission system through the active power instruction of the new energy power station;

[0075] A fifth determination unit, configured to determine whether the target power transmission system has and enables a primary frequency regulation function when the execution result of the third determination unit determines that the inertia response function of the target power transmission system is not enabled;

[0076] A sixth determination unit, configured to determine whether the frequency change of the target power transmission system exceeds the frequency dead zone range when the execution result of the fifth determination unit determines that the target power transmission system has and enables the primary frequency regulation function;

[0077] A third calculation unit, configured to calculate the primary frequency regulation active power of the target power transmission system and generate a primary frequency regulation active power instruction for the target power transmission system when the execution result of the sixth determination unit determines that the frequency change of the target power transmission system exceeds the frequency dead zone range;

[0078] A fourth calculation unit, configured to calculate the active power adjustment margin of the target power transmission system according to the type of the new energy station of the target power transmission system;

[0079] A third instruction generation unit, configured to limit the primary frequency regulation active power instruction according to the active power adjustment margin of the target power transmission system, and sequentially distribute and superimpose the limited primary frequency regulation active power instruction on the original active power instruction in the order of energy storage, photovoltaic, and wind power, and generate an active power instruction for the new energy power station of the target power transmission system;

[0080] An active power adjustment unit, configured to perform active power adjustment on the active power of the new energy power station of the target power transmission system according to the active power instruction for the new energy power station of the target power transmission system.

[0081] Preferably, the active power adjustment unit includes:

[0082] The first allocation unit is configured to allocate the active power margin to be adjusted to the energy storage station of the target power transmission system for consumption according to the active power command of the new energy power station of the target power transmission system;

[0083] The seventh judgment unit is configured to judge whether the energy storage station of the target power transmission system meets the active power regulation requirements of the new energy power station of the target power transmission system;

[0084] The second allocation unit is configured to, when the execution result of the seventh judgment unit determines that the energy storage station of the target power transmission system does not meet the active power regulation requirements of the new energy power station of the target power transmission system, determine the remaining active power margin to be adjusted and allocate the remaining active power margin to be adjusted to the photovoltaic power station of the target power transmission system for consumption;

[0085] The first determination unit is configured to, when the execution result of the seventh judgment unit determines that the energy storage station of the target power transmission system meets the active power regulation requirements of the new energy power station of the target power transmission system, determine that the active power regulation of the target power transmission system has been completed;

[0086] The eighth judgment unit is configured to judge whether the photovoltaic power station of the target power transmission system meets the active power regulation requirements of the new energy power station of the target power transmission system;

[0087] The third allocation unit is configured to, when the execution result of the eighth judgment unit determines that the photovoltaic power station of the target power transmission system does not meet the active power regulation requirements of the new energy power station of the target power transmission system, determine the remaining active power margin to be adjusted and allocate the remaining active power margin to be adjusted to the wind farm of the target power transmission system for consumption;

[0088] The second determination unit is configured to, when the execution result of the eighth judgment unit determines that the photovoltaic power station of the target power transmission system meets the active power regulation requirements of the new energy power station of the target power transmission system, determine that the active power regulation of the target power transmission system has been completed;

[0089] The ninth judgment unit is configured to judge whether the wind farm of the target power transmission system meets the active power regulation requirements of the new energy power station of the target power transmission system;

[0090] The third determination unit is configured to, when the execution result of the ninth judgment unit determines that the wind farm of the target power transmission system meets the active power regulation requirements of the new energy power station of the target power transmission system, determine that the active power regulation of the target power transmission system has been completed.

[0091] Preferably, the formula for calculating the fast voltage regulation reactive power of the target power transmission system includes:

[0092]

[0093] ΔU = U ref - U real

[0094] Wherein,

[0095] ΔQ is the reactive power command. When ΔQ is positive, it means capacitive reactive power is generated; when ΔQ is negative, it means inductive reactive power is generated.

[0096] Thr1 and Thr2 are the action thresholds of the automatic reactive voltage regulation link, where Thr2 > Thr1.

[0097] P n is the rated active power of the wind turbine generator set.

[0098] k Q is the reactive voltage regulation coefficient.

[0099] ΔU is the voltage deviation.

[0100] U0 is the AC grid connection voltage when the reactive power is 0.

[0101] S sc is the system short - circuit capacity.

[0102] U real is the real - time value of the AC grid connection voltage.

[0103] U ref is the reference value of the AC grid connection voltage.

[0104] A multi - energy - source new - energy power station active - support control device, comprising: one or more processors, and a memory;

[0105] The memory stores computer - readable instructions. When the computer - readable instructions are executed by the one or more processors, the steps of the multi - energy - source new - energy power station active - support control method described in any one of the foregoing introductions are implemented.

[0106] A readable storage medium stores computer - readable instructions. When the computer - readable instructions are executed by one or more processors, the one or more processors are caused to implement the steps of the multi - energy - source new - energy power station active - support control method described in any one of the foregoing introductions.

[0107] As can be seen from the above technical solutions, when it is necessary to adjust the voltage of a power transmission system supported by a multi-energy-source new energy power station, the method provided by the embodiments of the present application can determine whether the target power transmission system has a voltage change; if it is determined that the target power transmission system has a voltage change, it can be determined whether the target power transmission system has a fast voltage regulation function; if the target power transmission system has a fast voltage regulation function, the fast voltage regulation reactive power of the target power transmission system can be calculated; and the fast voltage regulation reactive power of the target power transmission system can be superimposed on the reactive power of the reactive power compensation device, and a reactive power command for the reactive power compensation device can be generated; after determining the reactive power command of the reactive power compensation device, the voltage of the target power transmission system can be limited by the reactive power command of the reactive power compensation device.

[0108] Further, the method provided by the embodiments of the present application can also determine whether the target power transmission system has a frequency change; if the target power transmission system has a frequency change, it is determined whether the target power transmission system has and enables an inertia response function; if the target power transmission system has an inertia response function and is enabled, it is determined whether the frequency change range of the target power transmission system exceeds the frequency dead zone range and meets a preset first condition; if the frequency change range of the target power transmission system exceeds the frequency dead zone range and meets the preset first condition, the inertia response active power command of the target power transmission system is calculated; the inertia response active power of the target power transmission system is superimposed on the active power of the energy storage of the new energy power station, and an active power command for the energy storage of the new energy power station is generated; the active power command of the energy storage is limited by the upper and lower limits of the active power of the energy storage of the new energy power station of the target power transmission system; if the target power transmission system does not enable the inertia response function, it is determined whether the target power transmission system has and enables a primary frequency regulation function; if the target power transmission system has a primary frequency regulation function and is enabled, it is determined whether the frequency change of the target power transmission system exceeds the frequency dead zone range; if the frequency change of the target power transmission system exceeds the frequency dead zone range, the primary frequency regulation active power of the target power transmission system is calculated, and a primary frequency regulation active power command for the target power transmission system is generated; according to the type of the new energy station of the target power transmission system, the active power regulation margin of the target power transmission system is calculated; the primary frequency regulation active power command is limited according to the active power regulation margin of the target power transmission system, and after considering the margin, the limited primary frequency regulation active power command is sequentially distributed and superimposed on the original active power command in the order of energy storage, photovoltaic, and wind power, and active power commands for the new energy power stations of the target power transmission system are generated in sequence; the active power of the new energy power stations of the target power transmission system is adjusted according to the active power commands for the new energy power stations of the target power transmission system.

[0109] The method provided by the embodiments of the present application can calculate the rapid voltage regulation reactive power of the target power transmission system; and can superimpose the rapid voltage regulation reactive power of the target power transmission system on the reactive power of the reactive power compensation device, and generate a reactive power command for the reactive power compensation device; after determining the reactive power command of the reactive power compensation device, the voltage of the target power transmission system can be limited by the reactive power command of the reactive power compensation device. It can effectively limit and regulate the voltage and frequency of the power transmission systems corresponding to different types of new energy power stations, and effectively provide a control strategy for the voltage support of the power transmission systems corresponding to the new energy power stations with multiple energy sources. BRIEF DESCRIPTION OF THE DRAWINGS

[0110] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0111] Figure 1 It is a flowchart of a method for realizing active support control of a new energy power station with multiple energy sources provided by the embodiments of the present application;

[0112] Figure 2 It is a schematic structural diagram of an active support control device for a new energy power station with multiple energy sources exemplified by the embodiments of the present application;

[0113] Figure 3 It is a hardware structure block diagram of an active support control device for a new energy power station with multiple energy sources disclosed by the embodiments of the present application. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0114] The following will clearly and completely describe the technical solutions in the embodiments of the present application in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, rather than all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present application.

[0115] In the actual application process, the previous new energy power stations were mostly new energy power stations with a single energy source, that is, a wind farm or a photovoltaic power station that solely uses one of the energy sources of wind energy or light energy as the main energy source, and a reactive power compensation device is configured in the new energy power station as the reactive power source of the power station.

[0116] However, new energy has the characteristic of large volatility. When it comes to solving the problem of its large volatility, on the one hand, energy storage can be installed inside the new energy power station to suppress the power fluctuation during peak and valley periods. On the other hand, taking advantage of the complementary characteristics of wind and light in time, wind power and photovoltaic power can be arranged simultaneously in the new energy power station as the main energy sources, so as to achieve a stable output of the power of the new energy power station. Against this background, multi-energy source new energy power stations are gradually put into actual use.

[0117] Like single-energy source new energy power stations, multi-energy source new energy power stations need to provide active support functions such as primary frequency regulation, inertia response, and rapid voltage regulation. However, the strategy of its active support is not clear, and the power distribution strategy among various energy sources during active support is also rarely studied.

[0118] How to distribute the power of multi-energy source new energy power stations has always been a concern.

[0119] In view of the fact that most of the current active support control schemes for multi-energy source new energy power stations are difficult to adapt to complex and changeable business requirements, the applicant has studied an active support control scheme for multi-energy source new energy power stations. This voltage regulation scheme can calculate the rapid voltage regulation reactive power of the target transmission system; and can superimpose the rapid voltage regulation reactive power of the target transmission system on the reactive power of the reactive power compensation device and generate the reactive power command of the reactive power compensation device; after determining the reactive power command of the reactive power compensation device, the voltage of the target transmission system can be limited through the reactive power command of the reactive power compensation device. It can effectively limit and regulate the voltage of the transmission systems corresponding to different types of new energy power stations, and effectively provide a control strategy for the voltage support of the transmission systems corresponding to multi-energy source new energy power stations.

[0120] The method provided by the embodiments of the present application can be used in many general or special computing device environments or configurations. For example: personal computers, server computers, handheld devices or portable devices, tablet devices, multi-processor devices, distributed computing environments including any of the above devices or equipment, and so on.

[0121] The embodiments of the present application provide an active support control method for multi-energy source new energy power stations. This method can be applied to various power systems, and can also be applied to various computer terminals or intelligent terminals. Its execution subject can be the processor or server of the computer terminal or intelligent terminal.

[0122] The following combines Figure 1 , and introduces the process of the active support control method for multi-energy source new energy power stations given by the embodiments of the present application. As Figure 1 shown, this process can include the following steps:

[0123] Step S101, determine whether there is a voltage change or a frequency change in the target power transmission system.

[0124] Specifically, in the actual application process, when the energy source type of the new energy power station changes from a single energy source to a multiple energy source, active support functions such as primary frequency modulation, inertia response, and rapid voltage regulation need to be provided for the new energy power station. When the target power transmission system undergoes a voltage change, it is necessary to determine whether the target power transmission system has a rapid voltage regulation function, so as to regulate the voltage of the target power transmission system. Therefore, if it is determined that the target power transmission system has a voltage change, step S102 can be executed.

[0125] In the actual application process, when the energy source type of the new energy power station changes from a single energy source to a multiple energy source, active support functions such as primary frequency modulation, inertia response, and rapid voltage regulation need to be provided for the new energy power station. When the target power transmission system undergoes a frequency change, it is necessary to determine whether the target power transmission system has an enabled inertia response function, so as to regulate the frequency of the target power transmission system. Therefore, it can be judged whether the target power transmission system has a frequency change. If it is determined that the target power transmission system has a frequency change, step S106 can be executed.

[0126] Step S102, determine whether the target power transmission system has a rapid voltage regulation function.

[0127] Specifically, as can be known from the above introduction, the method provided by the embodiments of the present application can determine whether there is a voltage change in the target power transmission system. When the target power transmission system undergoes a voltage change, it is necessary to determine whether the target power transmission system has a rapid voltage regulation function, so as to regulate the voltage of the target power transmission system. Therefore, if it is determined that the target power transmission system has a voltage change, it can be further determined whether the target power transmission system has a rapid voltage regulation function. If the target power transmission system has a rapid voltage regulation function, it can be shown that the rapid voltage regulation function of the target power transmission system can be used for voltage regulation. Therefore, if the target power transmission system has a rapid voltage regulation function, step S103 can be executed.

[0128] Step S103, calculate the rapid voltage regulation reactive power of the target power transmission system.

[0129] Specifically, as can be known from the above introduction, the method provided by the embodiments of the present application can determine whether the target power transmission system has a rapid voltage regulation function. If it is determined that the target power transmission system has a rapid voltage regulation function, the rapid voltage regulation function of the target power transmission system can be used for voltage regulation. Therefore, when it is determined that the target power transmission system has a rapid voltage regulation function, the rapid voltage regulation reactive power of the target power transmission system can be calculated.

[0130] Among them, the formula for calculating the fast voltage regulation reactive power of the target power transmission system may include the following:

[0131]

[0132] ΔU = U ref -U real

[0133] Among them,

[0134] ΔQ can be a reactive power command. When ΔQ is positive, it can indicate the emission of capacitive reactive power. When ΔQ is negative, it can indicate the emission of inductive reactive power;

[0135] Thr1 and Thr2 can be the action thresholds of the automatic reactive voltage regulation link. Among them, Thr2 > Thr1;

[0136] P n can be the rated active power of the wind turbine generator set;

[0137] k Q can be the reactive voltage regulation coefficient;

[0138] ΔU can be the voltage deviation;

[0139] U0 can be the AC voltage at the grid connection point when the reactive power is 0;

[0140] S sc can be the system short-circuit capacity;

[0141] U real can be the real-time value of the AC voltage at the grid connection point;

[0142] U ref can be the reference value of the AC voltage at the grid connection point.

[0143] Among them,

[0144] Thr1, Thr2 and the reactive voltage regulation coefficient k Q , need to be designed according to the actual system parameters. The overall goal is to meet the system stability.

[0145] Step S104, superimpose the fast voltage regulation reactive power of the target power transmission system on the reactive power of the reactive power compensation device, and generate a reactive power command for the reactive power compensation device.

[0146] Specifically, from the above introduction, it can be known that the method provided by the embodiments of the present application can determine the fast voltage regulation reactive power of the target power transmission system.

[0147] The voltage fluctuation of the target power transmission system is related to the fast voltage regulation reactive power of the target power transmission system and the reactive power of the reactive power compensation device in the new energy substation.

[0148] Therefore, after determining the fast voltage regulation reactive power of the target power transmission system, the voltage of the target power transmission system can be further adjusted by combining the fast voltage regulation reactive power of the target power transmission system and the reactive power of the reactive power compensation device.

[0149] The fast voltage regulation reactive power of the target power transmission system can be superimposed on the reactive power of the reactive power compensation device, and a reactive power command for the reactive power compensation device is generated.

[0150] Step S105: Limit the voltage of the target power transmission system through the reactive power command of the reactive power compensation device.

[0151] Specifically, as can be known from the above introduction, the method provided by the embodiment of the present application can superimpose the fast voltage regulation reactive power of the target power transmission system on the reactive power of the reactive power compensation device, and generate a reactive power command for the reactive power compensation device.

[0152] After determining the reactive power command of the reactive power compensation device, the voltage of the target power transmission system can be further limited through the reactive power command of the reactive power compensation device.

[0153] Step S106: Determine whether the target power transmission system has an enabled inertia response function.

[0154] Specifically, as can be known from the above introduction, the method provided by the embodiment of the present application can determine whether the frequency of the target power transmission system changes. If it is determined that the frequency of the target power transmission system changes, it means that the frequency of the target power transmission system needs to be adjusted. From this, it can be further determined whether the target power transmission system has an enabled inertia response function.

[0155] If it is determined that the target power transmission system has an enabled inertia response function, step S107 can be executed.

[0156] Step S107: Determine whether the frequency change range of the target power transmission system exceeds the frequency dead zone range and meets a preset first condition.

[0157] Specifically, as can be known from the above introduction, if the method provided by the embodiment of the present application determines that the target power transmission system has an enabled inertia response function, it means that the enabled inertia response function of the target power transmission system can be used to adjust the frequency of the target power transmission system.

[0158] Therefore, after determining that the target power transmission system has an enabled inertia response function, it can be determined whether the frequency change range of the target power transmission system exceeds the frequency dead zone range and meets a preset first condition.

[0159] Among them, the preset first condition is that the frequency deviation of the target power transmission system satisfies:

[0160]

[0161] Among them,

[0162] f can represent the grid connection point frequency of the source new energy power station, with the unit of Hertz;

[0163] Δf can represent the frequency deviation of the power transmission system, with the unit of Hertz;

[0164] t can represent time, with the unit of second.

[0165] If it is determined that the frequency change range of the target power transmission system exceeds the frequency dead zone range and satisfies the preset first condition, then step S108 is executed so as to adjust the frequency of the target power transmission system.

[0166] Step S108: Calculate the inertia response active power of the target power transmission system.

[0167] Specifically, from the above introduction, it can be known that the method provided by the embodiments of the present application can determine that the frequency change range of the target power transmission system exceeds the frequency dead zone range and satisfies the preset first condition. When it is determined that the frequency change range of the target power transmission system exceeds the frequency dead zone range and satisfies the preset first condition, it means that the inertia response active power of the target power transmission system can be calculated so as to generate an instruction for adjusting the frequency of the target power transmission system by using the inertia response active power of the target power transmission system.

[0168] Among them,

[0169] The calculation formula for calculating the inertia response active power of the target power transmission system may include the following:

[0170]

[0171] Among them,

[0172] ΔP t can represent the change amount of the active power of the new energy power station, with the unit of megawatt;

[0173] T J can represent the equivalent inertia time constant of the new energy power station, with the unit of second;

[0174] f N can represent the rated frequency of the power transmission system, with the unit of Hertz;

[0175] f can represent the grid connection point frequency of the source new energy power station, with the unit of Hertz;

[0176] Δf can represent the frequency deviation of the power transmission system, with the unit of Hertz;

[0177] P t can represent the active power of the new energy power station, with the unit of megawatt;

[0178] t can represent time, with the unit of second.

[0179] Step S109: Superimpose the inertia response active power of the target power transmission system on the active power of the new energy power station, and generate an active power command for the new energy power station.

[0180] Specifically, as can be known from the above introduction, the method provided by the embodiment of the present application can determine the inertia response active power of the target power transmission system.

[0181] The power of the new energy power station of the target power transmission system is related to the inertia response active power of the target power transmission system and the active power of the new energy power station.

[0182] Therefore, when determining the inertia response active power of the target power transmission system, the inertia response active power of the target power transmission system can be further superimposed on the active power of the new energy power station, and an active power command for the new energy power station can be generated.

[0183] So as to adjust the power of the new energy power station of the target power transmission system according to the active power command of the new energy power station.

[0184] Step S1110: Limit the power of the new energy power station of the target power transmission system through the active power command of the new energy power station.

[0185] Specifically, as can be known from the above introduction, the method provided by the embodiment of the present application can determine the active power command of the new energy power station, and through the active power command of the new energy power station, the power of the new energy power station of the target power transmission system can be limited.

[0186] Step S111: Judge whether the target power transmission system has the function of enabling primary frequency modulation.

[0187] Specifically, as can be known from the above introduction, the method provided by the embodiment of the present application can determine whether the target power transmission system has the function of enabling inertia response. If the target power transmission system does not have the function of enabling inertia response, it means that it is necessary to further judge whether the target power transmission system has the function of enabling primary frequency modulation. So as to judge whether the function of enabling primary frequency modulation of the target power transmission system can be used to perform frequency modulation on the target power transmission system.

[0188] Step S112: Judge whether the frequency change of the target power transmission system exceeds the frequency dead zone range.

[0189] Specifically, as can be seen from the above introduction, the method provided by the embodiments of the present application can determine whether the target power transmission system has the enabled primary frequency regulation function. If the target power transmission system has the enabled primary frequency regulation function, it means that the enabled primary frequency regulation function of the target power transmission system can be used to perform frequency regulation on the target power transmission system.

[0190] Therefore, if the target power transmission system has the enabled primary frequency regulation function, it is possible to further determine whether the frequency change of the target power transmission system exceeds the frequency dead zone range. When the frequency change of the target power transmission system exceeds the frequency dead zone range, step S113 can be executed.

[0191] Step S113: Calculate the primary frequency regulation active power of the target power transmission system and generate a primary frequency regulation active power command for the target power transmission system.

[0192] Specifically, as can be seen from the above introduction, the method provided by the embodiments of the present application can determine that the frequency change of the target power transmission system exceeds the frequency dead zone range.

[0193] When the frequency change of the target power transmission system exceeds the frequency dead zone range, the primary frequency regulation active power of the target power transmission system can be calculated and a primary frequency regulation active power command for the target power transmission system can be generated.

[0194] Among them, the calculation formula for calculating the primary frequency regulation active power of the target power transmission system may include:

[0195]

[0196] Wherein:

[0197] ΔP t can represent the change in active power of the source new energy power station, with the unit of megawatt;

[0198] K f can represent the active frequency regulation coefficient;

[0199] Δf can represent the frequency deviation of the power transmission system, with the unit of hertz;

[0200] f N can represent the rated frequency of the power transmission system, with the unit of hertz;

[0201] P t can represent the active power of the source new energy power station, with the unit of megawatt;

[0202] t can represent time, with the unit of second.

[0203] Step S114: Calculate the active power regulation margin of the target power transmission system according to the type of new energy station in the target power transmission system.

[0204] Specifically, as introduced above, the method provided in the embodiment of the present application can calculate the primary frequency regulation active power of the target power transmission system.

[0205] For different types of new energy power stations, the active power regulation margin of the target power transmission system is different.

[0206] Therefore, after determining to calculate the primary frequency regulation active power of the target power transmission system, the active power regulation margin of the target power transmission system can be further calculated according to the type of new energy station in the target power transmission system, so that the active power command for the new energy station in the target power transmission system can be generated according to the active power regulation margin of the target power transmission system.

[0207] For example,

[0208] The active power regulation margin can be calculated based on the actual wind power active power, photovoltaic active power, energy storage active power and their active power limits.

[0209] Step S115: Limit the primary frequency regulation active power command according to the active power regulation margin of the target power transmission system. After considering the margin, the limited primary frequency regulation active power command is sequentially distributed in the order of energy storage, photovoltaic and wind power and superimposed on the original active power command to generate the active power command for the new energy station in the target power transmission system in turn.

[0210] Specifically, as introduced above, the method provided in the embodiment of the present application can calculate the active power regulation margin of the target power transmission system according to the type of new energy station in the target power transmission system.

[0211] After determining the active power regulation margin of the target power transmission system, the active power command for the new energy station in the target power transmission system can be generated according to the active power regulation margin of the target power transmission system.

[0212] For example, the active power command can be distributed in the order of energy storage field, photovoltaic field and wind farm in turn.

[0213] It can be distributed in the order of energy storage, photovoltaic and wind power and superimposed on the original active power command to generate the active power command for the new energy station in the target power transmission system.

[0214] Limit the amplitude according to the active power margin of energy storage, the active power margin of photovoltaic power, or the active power margin of wind power. When the energy storage field cannot meet the regulation requirements, allocate the remaining regulation power to the photovoltaic; if the photovoltaic field still cannot meet the requirements, allocate it to the wind farm.

[0215] Step S116, perform active power regulation on the active power of the new energy power stations in the target power transmission system according to the active power commands of the new energy power stations in the target power transmission system.

[0216] Specifically, as can be seen from the above introduction, the method provided in the embodiments of the present application can determine the active power commands of the new energy power stations in the target power transmission system. After determining the active power commands of the new energy power stations in the target power transmission system, active power amplitude limiting can be performed on the new energy power stations in the target power transmission system.

[0217] For example,

[0218] The active power margin to be adjusted can be allocated to the energy storage stations in the target power transmission system for consumption according to the active power commands of the new energy power stations in the target power transmission system; after allocating the active power margin to be adjusted to the energy storage stations in the target power transmission system for consumption, it can be further determined whether the energy storage stations in the target power transmission system meet the active power regulation requirements of the new energy power stations in the target power transmission system.

[0219] If it is determined that the energy storage stations in the target power transmission system meet the active power regulation requirements of the new energy power stations in the target power transmission system, it can be determined that the active power regulation of the target power transmission system has been completed; if it is determined that the energy storage stations in the target power transmission system do not meet the active power regulation requirements of the new energy power stations in the target power transmission system, the remaining active power margin to be adjusted can be determined and the remaining active power margin to be adjusted can be allocated to the photovoltaic power stations in the target power transmission system for consumption.

[0220] After allocating the active power margin to be adjusted to the photovoltaic power stations in the target power transmission system for consumption, it can be further determined whether the photovoltaic power stations in the target power transmission system meet the active power regulation requirements of the new energy power stations in the target power transmission system; if it is determined that the photovoltaic power stations in the target power transmission system meet the active power regulation requirements of the new energy power stations in the target power transmission system, it is determined that the active power regulation of the target power transmission system has been completed; if it is determined that the photovoltaic power stations in the target power transmission system do not meet the active power regulation requirements of the new energy power stations in the target power transmission system, the remaining active power margin to be adjusted can be determined and the remaining active power margin to be adjusted can be allocated to the wind farms in the target power transmission system for consumption.

[0221] After the active power margin to be adjusted is allocated to the wind farm accommodation of the target power transmission system, it can be further determined whether the wind farm of the target power transmission system meets the active power regulation requirements of the new energy power stations in the target power transmission system; if it is determined that the wind farm of the target power transmission system meets the active power regulation requirements of the new energy power stations in the target power transmission system, it can be determined that the active power regulation of the target power transmission system has been completed.

[0222] As can be seen from the technical solutions introduced above, the method provided in the embodiments of the present application can calculate the fast voltage regulation reactive power of the target power transmission system; and can superimpose the fast voltage regulation reactive power of the target power transmission system on the reactive power of the reactive power compensation device and generate a reactive power command for the reactive power compensation device; after determining the reactive power command of the reactive power compensation device, the voltage of the target power transmission system can be limited by the reactive power command of the reactive power compensation device. The active power regulation margin can be calculated based on the actual wind power active power, photovoltaic active power, energy storage active power and their active power limits, and the active power commands can be allocated in the order of the energy storage field, the photovoltaic field and the wind farm in turn, and the limits can be imposed through the energy storage active power margin, the photovoltaic active power margin or the wind power active power margin. When the energy storage field cannot meet the regulation requirements, the remaining regulation power is allocated to the photovoltaic field; if the photovoltaic field still does not meet the requirements, it is allocated to the wind farm. Thus, the primary frequency regulation function of the multi-energy source new energy power stations can be realized. The voltage and frequency of the power transmission system corresponding to different types of new energy power stations can be effectively limited and regulated, and an effective control strategy can be provided for the voltage and frequency support of the power transmission system corresponding to the multi-energy source new energy power stations.

[0223] The multi-energy source new energy power station active support control device provided in the embodiments of the present application will be described below. The multi-energy source new energy power station active support control device described below can be correspondingly referred to the multi-energy source new energy power station active support control method described above.

[0224] See Figure 2 , Figure 2 which is a schematic structural diagram of a multi-energy source new energy power station active support control device disclosed in the embodiments of the present application.

[0225] As Figure 2 shown, the multi-energy source new energy power station active support control device may include:

[0226] A first judgment unit 101, configured to judge whether there is a voltage change or a frequency change in the target power transmission system;

[0227] The second judgment unit 102 is configured to judge whether the target power transmission system has a fast voltage regulation function when the execution result of the first judgment unit is that the voltage of the target power transmission system changes;

[0228] The first calculation unit 103 is configured to calculate the fast voltage regulation reactive power of the target power transmission system when the execution result of the first judgment unit is that the target power transmission system has a fast voltage regulation function;

[0229] The first instruction generation unit 104 is configured to superimpose the fast voltage regulation reactive power of the target power transmission system on the reactive power of the reactive power compensation device and generate a reactive power instruction for the reactive power compensation device;

[0230] The first amplitude limiting unit 105 is configured to limit the voltage of the target power transmission system through the reactive power instruction of the reactive power compensation device;

[0231] The third judgment unit 106 is configured to judge whether the target power transmission system has an enabled inertia response function when the execution result of the second judgment unit 101 is that the frequency of the target power transmission system changes;

[0232] The fourth judgment unit 107 is configured to judge whether the frequency change range of the target power transmission system exceeds the frequency dead zone range and meets a preset first condition when the execution result of the third judgment unit 106 is that the target power transmission system has an enabled inertia response function;

[0233] The second calculation unit 108 is configured to calculate the inertia response active power of the target power transmission system when the judgment result of the fourth judgment unit 107 determines that the frequency change range of the target power transmission system exceeds the frequency dead zone range and meets a preset first condition;

[0234] The second instruction generation unit 109 is configured to superimpose the inertia response active power of the target power transmission system on the active power of the new energy power station and generate an active power instruction for the new energy power station;

[0235] The second amplitude limiting unit 110 is configured to limit the power of the new energy power station of the target power transmission system through the active power instruction of the new energy power station;

[0236] The fifth judgment unit 111 is configured to judge whether the target power transmission system has and enables a primary frequency regulation function when the execution result of the third judgment unit 106 is that the target power transmission system does not enable the inertia response function;

[0237] The sixth determination unit 112 is configured to determine whether the frequency change of the target power transmission system exceeds the frequency deadband range when the execution result of the fifth determination unit 111 is to determine that the target power transmission system has a primary frequency regulation function and is enabled;

[0238] The third calculation unit 113 is configured to calculate the primary frequency regulation active power of the target power transmission system and generate a primary frequency regulation active power command for the target power transmission system when the execution result of the sixth determination unit 112 is to determine that the frequency change of the target power transmission system exceeds the frequency deadband range;

[0239] The fourth calculation unit 114 is configured to calculate the active power regulation margin of the target power transmission system according to the type of new energy station of the target power transmission system;

[0240] The third command generation unit 115 is configured to limit the primary frequency regulation active power command according to the active power regulation margin of the target power transmission system, and sequentially distribute the limited primary frequency regulation active power command to energy storage, photovoltaic, and wind power in this order and superimpose it on the original active power command to generate an active power command for the new energy power station of the target power transmission system;

[0241] The active power regulation unit 116 is configured to perform active power regulation on the active power of the new energy power station of the target power transmission system according to the active power command for the new energy power station of the target power transmission system.

[0242] As can be seen from the above technical solutions, when it is necessary to regulate the voltage of a power transmission system supported by a multi-energy source new energy power station, the device provided by the embodiment of the present application can determine whether the target power transmission system has a voltage change; if it is determined that the target power transmission system has a voltage change, it can be determined whether the target power transmission system has a fast voltage regulation function; if the target power transmission system has a fast voltage regulation function, it can calculate the fast voltage regulation reactive power of the target power transmission system; and can superimpose the fast voltage regulation reactive power of the target power transmission system on the reactive power of the reactive power compensation device and generate a reactive power command for the reactive power compensation device; after determining the reactive power command of the reactive power compensation device, the voltage of the target power transmission system can be limited by the reactive power command of the reactive power compensation device.

[0243] Further, the device provided by the embodiment of the present application can also determine whether the frequency of the target power transmission system changes; if the frequency of the target power transmission system changes, it is determined whether the target power transmission system has and enables the inertia response function; if the target power transmission system has the inertia response function and is enabled, it is determined whether the frequency change range of the target power transmission system exceeds the frequency dead zone range and meets a preset first condition; if the frequency change range of the target power transmission system exceeds the frequency dead zone range and meets the preset first condition, calculate the inertia response active power command of the target power transmission system; superimpose the inertia response active power of the target power transmission system on the active power of the energy storage of the new energy power station, and generate the active power command of the energy storage of the new energy power station; limit the active power command of the energy storage through the upper and lower limits of the active power of the energy storage of the new energy power station; if the target power transmission system does not enable the inertia response function, it is determined whether the target power transmission system has and enables the primary frequency regulation function; if the target power transmission system has the primary frequency regulation function and is enabled, it is determined whether the frequency change of the target power transmission system exceeds the frequency dead zone range; if the frequency change of the target power transmission system exceeds the frequency dead zone range, calculate the primary frequency regulation active power of the target power transmission system, and generate the primary frequency regulation active power command of the target power transmission system; calculate the active power adjustment margin of the target power transmission system according to the type of the new energy station of the target power transmission system; limit the primary frequency regulation active power command according to the active power adjustment margin of the target power transmission system, and sequentially distribute and superimpose the limited primary frequency regulation active power command on the original active power command in the order of energy storage, photovoltaic, and wind power, and generate the active power command for the new energy power station of the target power transmission system in turn; perform active power adjustment on the active power of the new energy power station of the target power transmission system according to the active power command for the new energy power station of the target power transmission system respectively.

[0244] The device provided by the embodiment of the present application can calculate the fast voltage regulation reactive power of the target power transmission system; and can superimpose the fast voltage regulation reactive power of the target power transmission system on the reactive power of the reactive power compensation device, and generate the reactive power command of the reactive power compensation device; after determining the reactive power command of the reactive power compensation device, the voltage of the target power transmission system can be limited through the reactive power command of the reactive power compensation device. Effectively limit and regulate the voltage and frequency of the power transmission system corresponding to different types of new energy power stations, and effectively provide a control strategy for the voltage support of the power transmission system corresponding to the new energy power station with multiple energy sources.

[0245] Further optionally, the active power adjustment unit 116 may include:

[0246] The first allocation unit is configured to allocate the active power margin to be adjusted to the energy storage station of the target power transmission system for consumption according to the active power instruction of the new energy power station of the target power transmission system;

[0247] The seventh judgment unit is configured to judge whether the energy storage station of the target power transmission system meets the active power regulation requirements of the new energy power station of the target power transmission system;

[0248] The second allocation unit is configured to, when the execution result of the seventh judgment unit determines that the energy storage station of the target power transmission system does not meet the active power regulation requirements of the new energy power station of the target power transmission system, determine the remaining active power margin to be adjusted and allocate the remaining active power margin to be adjusted to the photovoltaic power station of the target power transmission system for consumption;

[0249] The first determination unit is configured to, when the execution result of the seventh judgment unit determines that the energy storage station of the target power transmission system meets the active power regulation requirements of the new energy power station of the target power transmission system, determine that the active power regulation of the target power transmission system has been completed;

[0250] The eighth judgment unit is configured to judge whether the photovoltaic power station of the target power transmission system meets the active power regulation requirements of the new energy power station of the target power transmission system;

[0251] The third allocation unit is configured to, when the execution result of the eighth judgment unit determines that the photovoltaic power station of the target power transmission system does not meet the active power regulation requirements of the new energy power station of the target power transmission system, determine the remaining active power margin to be adjusted and allocate the remaining active power margin to be adjusted to the wind farm of the target power transmission system for consumption;

[0252] The second determination unit is configured to, when the execution result of the eighth judgment unit determines that the photovoltaic power station of the target power transmission system meets the active power regulation requirements of the new energy power station of the target power transmission system, determine that the active power regulation of the target power transmission system has been completed;

[0253] The ninth judgment unit is configured to judge whether the wind farm of the target power transmission system meets the active power regulation requirements of the new energy power station of the target power transmission system;

[0254] The third determination unit is configured to, when the execution result of the ninth judgment unit determines that the wind farm of the target power transmission system meets the active power regulation requirements of the new energy power station of the target power transmission system, determine that the active power regulation of the target power transmission system has been completed.

[0255] Further optionally, the formula for calculating the fast voltage regulation reactive power of the target power transmission system may include:

[0256]

[0257] ΔU = U ref -U real

[0258] Wherein,

[0259] ΔQ can be a reactive power command. When ΔQ is positive, it can indicate the output of capacitive reactive power. When ΔQ is negative, it can indicate the output of inductive reactive power;

[0260] Thr1 and Thr2 can be the action thresholds of the reactive power automatic voltage regulation link. Wherein, Thr2 > Thr1;

[0261] P n can be the rated active power of the wind turbine generator set;

[0262] k Q can be the reactive power voltage regulation coefficient;

[0263] ΔU can be the voltage deviation;

[0264] U0 can be the AC grid connection voltage when the reactive power is 0;

[0265] S sc can be the system short-circuit capacity;

[0266] U real can be the real-time value of the AC grid connection voltage;

[0267] U ref can be the reference value of the AC grid connection voltage.

[0268] Wherein, for the specific processing flow of each unit included in the above multi-energy source new energy power station active support control device, reference can be made to the relevant introduction in the previous part of the multi-energy source new energy power station active support control method, which will not be elaborated here.

[0269] The multi-energy source new energy power station active support control device provided by the embodiments of the present application can be applied to multi-energy source new energy power station active support control equipment, such as terminals: mobile phones, computers, etc. Optionally, Figure 3 shows the hardware structure block diagram of the multi-energy source new energy power station active support control equipment. Referring to Figure 3 , the hardware structure of the multi-energy source new energy power station active support control equipment can include: at least one processor 1, at least one communication interface 2, at least one memory 3 and at least one communication bus 4.

[0270] In the embodiments of the present application, the number of the processor 1, the communication interface 2, the memory 3, and the communication bus 4 is at least one, and the processor 1, the communication interface 2, and the memory 3 complete mutual communication through the communication bus 4.

[0271] The processor 1 may be a central processing unit (CPU), or an application specific integrated circuit (ASIC), or one or more integrated circuits configured to implement the embodiments of the present application, etc.;

[0272] The memory 3 may include high-speed RAM memory, and may also include non-volatile memory, such as at least one disk memory;

[0273] Among them, the memory stores a program, and the processor can call the program stored in the memory. The program is used to: implement each processing flow in the above-mentioned active support control scheme for a new energy power station with multiple energy sources of the terminal.

[0274] The embodiments of the present application also provide a readable storage medium. The storage medium can store a program suitable for being executed by a processor. The program is used to: implement each processing flow in the active support control scheme for a new energy power station with multiple energy sources of the terminal.

[0275] Finally, it should also be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including a..." does not exclude the existence of additional identical elements in the process, method, article or device including the element.

[0276] The various embodiments in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. The same or similar parts among the various embodiments can be referred to each other.

[0277] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present application. Various modifications to these embodiments will be obvious to those skilled in the art. The general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. The various embodiments can be combined with each other. Therefore, the present application will not be limited to these embodiments shown herein, but will be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A multi-energy source new energy power station active support control method, characterized in that Including: Determine whether there is a voltage change or a frequency change in the target power transmission system; If there is a voltage change in the target power transmission system, determine whether the target power transmission system has a fast voltage regulation function; If the target power transmission system has a fast voltage regulation function, calculate the fast voltage regulation reactive power of the target power transmission system; Superimpose the fast voltage regulation reactive power of the target power transmission system on the reactive power of the reactive power compensation device, and generate a reactive power command for the reactive power compensation device; Limit the voltage of the target power transmission system through the reactive power command of the reactive power compensation device; If there is a frequency change in the target power transmission system, determine whether the target power transmission system has and enables an inertia response function; If the target power transmission system has an inertia response function and is enabled, determine whether the frequency change range of the target power transmission system exceeds the frequency dead zone range and meets a preset first condition; If the frequency change range of the target power transmission system exceeds the frequency dead zone range and meets the preset first condition, calculate the inertia response active power command of the target power transmission system; Superimpose the inertia response active power of the target power transmission system on the active power of the energy storage of the new energy power station, and generate an active power command for the energy storage of the new energy power station; Limit the active power command of the energy storage through the upper and lower limits of the active power of the new energy power station energy storage; If the target power transmission system does not enable the inertia response function, determine whether the target power transmission system has and enables a primary frequency regulation function; If the target power transmission system has a primary frequency regulation function and is enabled, determine whether the frequency change of the target power transmission system exceeds the frequency dead zone range; If the frequency change of the target power transmission system exceeds the frequency dead zone range, calculate the primary frequency regulation active power of the target power transmission system, and generate a primary frequency regulation active power command for the target power transmission system; Calculate the active power regulation margin of the target power transmission system according to the type of new energy station of the target power transmission system; Limit the primary frequency regulation active power command according to the active power regulation margin of the target power transmission system. After considering the margin, the limited primary frequency regulation active power command is sequentially distributed and superimposed on the original active power command in the order of energy storage, photovoltaic, and wind power, and an active power command for the new energy power station of the target power transmission system is generated in sequence; Adjust the active power of the new energy power station of the target power transmission system according to the active power command for the new energy power station of the target power transmission system respectively.

2. The method according to claim 1, wherein The adjusting the active power of the new energy power station of the target power transmission system according to the active power command for the new energy power station of the target power transmission system respectively includes: According to the active power command for the new energy power station of the target power transmission system, allocate the active power margin to be adjusted to the energy storage station of the target power transmission system for consumption; Judge whether the energy storage station of the target power transmission system meets the active power regulation requirements of the new energy power station of the target power transmission system; If the energy storage station of the target power transmission system fails to meet the active power regulation requirements of the new energy stations in the target power transmission system, determine the remaining active power margin to be regulated and allocate the remaining active power margin to be regulated to the PV power stations in the target power transmission system for consumption; If the energy storage station of the target power transmission system meets the active power regulation requirements of the new energy stations in the target power transmission system, determine that the active power regulation of the target power transmission system has been completed; Judge whether the PV power stations in the target power transmission system meet the active power regulation requirements of the new energy stations in the target power transmission system; If the PV power stations in the target power transmission system fail to meet the active power regulation requirements of the new energy stations in the target power transmission system, determine the remaining active power margin to be regulated and allocate the remaining active power margin to be regulated to the wind power stations in the target power transmission system for consumption; If the PV power stations in the target power transmission system meet the active power regulation requirements of the new energy stations in the target power transmission system, determine that the active power regulation of the target power transmission system has been completed; Judge whether the wind power stations in the target power transmission system meet the active power regulation requirements of the new energy stations in the target power transmission system; If the wind power stations in the target power transmission system meet the active power regulation requirements of the new energy stations in the target power transmission system, determine that the active power regulation of the target power transmission system has been completed.

3. The method according to claim 1, wherein The formula for calculating the fast voltage regulation reactive power of the target power transmission system includes: ΔU = U ref -U real Where, ΔQ is the reactive power command. When ΔQ is positive, it means sending capacitive reactive power; when ΔQ is negative, it means sending inductive reactive power; Thr1 and Thr2 are the action thresholds of the reactive power automatic voltage regulation link, where Thr2 > Thr1; P n is the rated active power of the wind turbine generator set; k Q is the reactive power voltage regulation coefficient; ΔU is the voltage deviation; U0 is the AC voltage at the grid connection point when the reactive power is 0; S sc is the system short-circuit capacity; U real is the real-time value of the grid-connected point AC voltage; U ref is the reference value of the grid connection point AC voltage.

4. The method according to claim 1, characterized in that The calculation formula for the inertia response active power of the target power transmission system includes: Where, ΔP t Indicates the change in active power of the new energy power station, with the unit of megawatt; T J represents the equivalent inertia time constant of the new energy power station, with the unit of second; f N represents the rated frequency of the power transmission system, in hertz; f represents the grid connection point frequency of the source new energy station, with the unit of Hertz; Δf represents the power transmission system frequency deviation, with the unit of Hertz; P t represents the active power of the source new energy power station, with the unit of megawatt; t represents time, with the unit of second.

5. The method according to claim 1, wherein The calculation formula for the primary frequency modulation active power of the target power transmission system includes: Where: ΔP t represents the change in active power of the source new energy power station, with the unit of megawatt; K f represents the active frequency modulation coefficient; Δf represents the power transmission system frequency deviation, with the unit of Hertz; f N represents the rated frequency of the power transmission system, in hertz; P t represents the active power of the source new energy power station, with the unit of megawatt; t represents time, with the unit of second.

6. A multi-energy source new energy power station active support control device, characterized in that, It includes: The first judgment unit is used to judge whether there is a voltage change or a frequency change in the target power transmission system; The second judgment unit is used to judge whether the target power transmission system has a fast voltage regulation function when the execution result of the first judgment unit is that the target power transmission system has a voltage change; The first calculation unit is used to calculate the fast voltage regulation reactive power of the target power transmission system when the execution result of the first judgment unit is that the target power transmission system has a fast voltage regulation function; The first instruction generation unit is used to superimpose the fast voltage regulation reactive power of the target power transmission system on the reactive power of the reactive power compensation device and generate the reactive power command of the reactive power compensation device; The first limiting unit is used to limit the voltage of the target power transmission system through the reactive power command of the reactive power compensation device; A third judgment unit, configured to judge whether the target power transmission system has an enabled inertia response function when the execution result of the second judgment unit is that the target power transmission system has a frequency change; A fourth judgment unit, when the execution result of the third judgment unit is that the target power transmission system has an enabled inertia response function, judges whether the frequency change range of the target power transmission system exceeds a frequency dead zone range and meets a preset first condition; A second calculation unit, configured to calculate the inertia response active power of the target power transmission system when the judgment result of the fourth judgment unit determines that the frequency change range of the target power transmission system exceeds the frequency dead zone range and meets the preset first condition; A second instruction generation unit, configured to superimpose the inertia response active power of the target power transmission system on the active power of the new energy power station and generate an active power instruction for the new energy power station; A second limiting unit, configured to limit the power of the new energy power station of the target power transmission system through the active power instruction of the new energy power station; A fifth judgment unit, configured to judge whether the target power transmission system has and enables a primary frequency modulation function when the execution result of the third judgment unit is that the target power transmission system does not enable the inertia response function; A sixth judgment unit, configured to judge whether the frequency change of the target power transmission system exceeds the frequency dead zone range when the execution result of the fifth judgment unit is that the target power transmission system has and enables the primary frequency modulation function; A third calculation unit, configured to calculate the primary frequency modulation active power of the target power transmission system and generate a primary frequency modulation active power instruction for the target power transmission system when the execution result of the sixth judgment unit is that the frequency change of the target power transmission system exceeds the frequency dead zone range; A fourth calculation unit, configured to calculate the active power regulation margin of the target power transmission system according to the type of the new energy station of the target power transmission system; A third instruction generation unit, configured to limit the primary frequency modulation active power instruction according to the active power regulation margin of the target power transmission system, and sequentially distribute the limited primary frequency modulation active power instruction to energy storage, photovoltaic, and wind power in this order and superimpose it on the original active power instruction to generate an active power instruction for the new energy power station of the target power transmission system; An active power regulation unit, configured to perform active power regulation on the active power of the new energy power station of the target power transmission system according to the active power instruction for the new energy power station of the target power transmission system.

7. The device according to claim 6, characterized in that, The active power regulation unit includes: A first distribution unit, configured to distribute the active power margin to be regulated to the energy storage power station of the target power transmission system for consumption according to the active power instruction for the new energy power station of the target power transmission system; A seventh judgment unit, configured to judge whether the energy storage power station of the target power transmission system meets the active power regulation requirement of the new energy power station of the target power transmission system; A second allocation unit, configured to determine the remaining active power regulation margin to be adjusted and allocate the remaining active power regulation margin to the photovoltaic power station of the target power transmission system for consumption when the execution result of the seventh determination unit determines that the energy storage station of the target power transmission system does not meet the active power regulation demand of the new energy power station of the target power transmission system; A first determination unit, configured to determine that the active power regulation of the target power transmission system has been completed when the execution result of the seventh determination unit determines that the energy storage station of the target power transmission system meets the active power regulation demand of the new energy power station of the target power transmission system; An eighth determination unit, configured to determine whether the photovoltaic power station of the target power transmission system meets the active power regulation demand of the new energy power station of the target power transmission system; A third allocation unit, configured to determine the remaining active power regulation margin to be adjusted and allocate the remaining active power regulation margin to the wind farm of the target power transmission system for consumption when the execution result of the eighth determination unit determines that the photovoltaic power station of the target power transmission system does not meet the active power regulation demand of the new energy power station of the target power transmission system; A second determination unit, configured to determine that the active power regulation of the target power transmission system has been completed when the execution result of the eighth determination unit determines that the photovoltaic power station of the target power transmission system meets the active power regulation demand of the new energy power station of the target power transmission system; A ninth determination unit, configured to determine whether the wind farm of the target power transmission system meets the active power regulation demand of the new energy power station of the target power transmission system; A third determination unit, configured to determine that the active power regulation of the target power transmission system has been completed when the execution result of the ninth determination unit determines that the wind farm of the target power transmission system meets the active power regulation demand of the new energy power station of the target power transmission system.

8. The device according to claim 6, characterized in that, The formula for calculating the fast voltage regulation reactive power of the target power transmission system includes: ΔU = U ref -U real Wherein, ΔQ is the reactive power command. When ΔQ is positive, it means sending capacitive reactive power; when ΔQ is negative, it means sending inductive reactive power; Thr1 and Thr2 are the action thresholds of the reactive power automatic voltage regulation link, where Thr2 > Thr1; P n is the rated active power of the wind turbine generator set; k Q is the reactive power voltage regulation coefficient; ΔU is the voltage deviation; U0 is the AC voltage at the grid connection point when the reactive power is 0; S sc is the system short-circuit capacity; U real is the real-time value of the grid-connected point AC voltage; U ref is the reference value of the grid-connected point AC voltage.

9. A multi - energy - source new - energy power station active - support control device, characterized in that, including: One or more processors, and a memory; Computer-readable instructions are stored in the memory, and when the computer-readable instructions are executed by the one or more processors, the steps of the multi-energy-source new energy power station active support control method according to any one of claims 1 to 5 are implemented.

10. A readable storage medium, characterized in that: Computer-readable instructions are stored in the readable storage medium, and when the computer-readable instructions are executed by one or more processors, the one or more processors are caused to implement the steps of the multi-energy-source new energy power station active support control method according to any one of claims 1 to 5.

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