CN113126546A - Distributed energy storage system frequency support controller and control method - Google Patents

Abstract

The invention discloses a distributed energy storage system frequency support controller and a control method, wherein the controller comprises: the data processing control unit is used for receiving the SOC of the energy storage system and the frequency information of the energy storage system and controlling the energy storage system to carry out primary frequency modulation; the data acquisition unit is used for acquiring the SOC (system on chip) and frequency information of the energy storage system and transmitting the information to the data processing control unit; the data transmission unit uses Ethernet as a data transmission interface to transmit data comprising the information of the energy storage system SOC and the energy storage system frequency to a centralized frequency modulation control center, and returns the scheduling of the centralized frequency modulation control center to the data processing control unit; the data storage unit is used for storing data including the information of the SOC and the frequency of the energy storage system periodically; and the human-computer interaction unit is used for displaying the running state of the energy storage system. According to the invention, the response output of the energy storage system is carried out according to the SOC and the frequency information of the energy storage system, the frequency fluctuation of the system is improved, and the operation of the system is supported.

Description

Distributed energy storage system frequency support controller and control method

Technical Field

The invention relates to the technical field of power system micro-grids, in particular to a distributed energy storage system frequency support controller and a control method.

Background

The distributed power generation can fully utilize clean and renewable energy sources, is an important measure for realizing the aims of energy conservation and emission reduction, and is also an effective supplement for centralized power generation. When a large number of distributed power sources are connected to a medium-low voltage distribution network, the voltage and frequency fluctuation in the distribution network is aggravated by the intermittency and randomness of the renewable distributed power sources such as wind power and photovoltaic, and the power balance and safe operation of the distribution network, the power supply reliability of users and the power quality are greatly influenced. In addition, with the economic development and industrial upgrading of China, the capacity of the existing distribution and transformation equipment in the power grid may not meet the increasing peak load requirements, and more high-tech and digital enterprises also put higher requirements on power supply reliability and power quality. The distributed electric energy storage technology is accessed into the power grid, so that the accepting capacity of the power grid to distributed energy can be improved, the power supply reliability and the electric energy quality of the system can be improved, the resource allocation of the power grid can be optimized, and the utilization rate of power grid assets can be improved. The electric energy storage system has the characteristics of high response speed, high output power control precision and the like, and meets the requirement of power grid frequency modulation. When the micro-grid is in an island operation mode, the distributed electric energy storage system can be used as a main power supply of the micro-grid to provide voltage and frequency support, the technical characteristics of quick response of the energy storage system are fully exerted, the power fluctuation of the micro-grid is balanced in real time, and the voltage and the frequency are ensured to be within an allowable operation range. The problem to be solved is to design a distributed energy storage system frequency support controller and a control method by combining the dispersibility of the energy storage system.

Disclosure of Invention

The invention provides a distributed energy storage system frequency support controller and a control method aiming at the dispersion requirement of an energy storage system.

In a first aspect of the present invention, a distributed energy storage system frequency support controller is provided, where the distributed energy storage system frequency support controller is respectively connected to a centralized frequency modulation control center and an energy storage system, and the controller includes:

a data processing control unit configured to:

receiving the information of the SOC and the frequency of the energy storage system, and connecting the energy storage system to control the energy storage system to carry out primary frequency modulation according to the information of the SOC and the frequency of the energy storage system;

a data acquisition unit configured to:

the system comprises a data processing control unit, an energy storage system and a data processing control unit, wherein the data processing control unit is used for acquiring the frequency information of the energy storage system and transmitting the frequency information of the energy storage system to the data processing control unit;

a data transmission unit configured to:

the Ethernet is used as a data transmission interface and is respectively connected with the data processing control unit and the centralized regulation and control center, the data comprising the information of the SOC and the frequency of the energy storage system is transmitted to the centralized frequency modulation control center, and the dispatching of the centralized regulation and control center is returned to the data processing control unit;

a data storage unit configured to:

the data processing control unit is connected with the data processing control unit and is used for periodically storing data comprising the SOC and the frequency information of the energy storage system;

a human-computer interaction unit configured to:

and the data processing control unit is connected with the energy storage system and is used for displaying the running state of the energy storage system.

Further, the data processing control unit is further configured to:

and making a second frequency modulation response to the returned scheduling of the centralized regulation and control center.

Further, the data processing control unit controls the energy storage system to perform first frequency modulation according to the energy storage system SOC and the energy storage system frequency information, specifically:

when the frequency fluctuation is larger than the dead zone, the data processing control unit determines an energy storage frequency modulation coefficient and controls the energy storage system to perform frequency modulation; and when the frequency fluctuation is in a dead zone, determining whether the SOC of the energy storage system is in a threshold range, and if not, determining the recovery coefficient of the energy storage system and controlling the energy storage system to recover by the data processing control unit.

Furthermore, the data processing control unit comprises an FPGA chip, a gigabit Ethernet interface chip, a data storage driving chip, an LCD driving module and a key driving module.

Furthermore, the man-machine interaction unit comprises an LCD display screen and a key.

Further, the data storage unit is further configured to:

when the storage space overflows, the initial storage data is rolled over in a time sequence.

In a second aspect of the present invention, a distributed energy storage system frequency support control method is provided, the method includes: receiving the information of the SOC and the frequency of the energy storage system by using a data processing control unit, and controlling the energy storage system to carry out primary frequency modulation according to the information of the SOC and the frequency of the energy storage system; acquiring the information of an energy storage system SOC and the frequency information of the energy storage system by using a data acquisition unit, and transmitting the information of the energy storage system SOC and the frequency information of the energy storage system to a data processing control unit; the method comprises the steps that a data transmission unit is used for transmitting data comprising energy storage system SOC and energy storage system frequency information to a centralized frequency modulation control center by taking an Ethernet as a data transmission interface, and the dispatching of the centralized frequency modulation control center is returned to a data processing control unit; the data storage unit is used for storing data including the information of the SOC and the frequency of the energy storage system periodically; and displaying the running state of the energy storage system by using the human-computer interaction unit.

Further, the method also comprises the step of utilizing the data processing control unit to make a second frequency modulation response to the returned scheduling of the centralized regulation and control center.

Further, the controlling the energy storage system to perform the first frequency modulation according to the energy storage system SOC and the energy storage system frequency information specifically includes: when the frequency fluctuation is larger than the dead zone, the data processing control unit determines an energy storage frequency modulation coefficient and controls the energy storage system to perform frequency modulation; and when the frequency fluctuation is in a dead zone, determining whether the SOC of the energy storage system is in a threshold range, and if not, determining the recovery coefficient of the energy storage system and controlling the energy storage system to recover by the data processing control unit.

Further, the method comprises the step of rolling and covering the initial stored data in a time sequence by using the data storage unit when the storage space overflows.

The invention provides a distributed energy storage system frequency support controller and a control method, which participate in primary frequency modulation by utilizing the quick response of the energy storage system response according to the SOC of the energy storage system and the frequency of the energy storage system, realize quick primary frequency modulation and realize energy storage system recovery when frequency modulation is not needed, and simultaneously, participate in secondary frequency modulation of the energy storage system by responding to the distributed output of a centralized regulation and control center in combination with the dispersibility of the energy storage system, realize the cooperative control of each distributed energy storage system and achieve the purpose of eliminating frequency deviation.

Drawings

Fig. 1 is a schematic structural diagram of a distributed energy storage system frequency support controller according to an embodiment of the present invention;

FIG. 2 is a flow chart of a first frequency tuning method in an embodiment of the present invention;

FIG. 3 is a schematic diagram illustrating the frequency change of the load increase of the energy storage system according to an embodiment of the present invention;

FIG. 4 shows an embodiment of the invention in which the energy storage system K_E0The relation change schematic diagram with the energy storage system SOC;

FIG. 5 shows the recovery requirement coefficient K of the energy storage system in the embodiment of the invention_E1A schematic diagram of variations;

FIG. 6 shows the charge-discharge constraint coefficient K of the energy storage system in the embodiment of the present invention_E2A schematic diagram of variations;

fig. 7 is a schematic diagram of a frequency supporting control method of a distributed energy storage system according to an embodiment of the invention.

Detailed Description

In order to further describe the technical scheme of the present invention in detail, the present embodiment is implemented on the premise of the technical scheme of the present invention, and detailed implementation modes and specific steps are given.

The embodiment of the invention aims at a distributed energy storage system frequency support controller and a control method. As shown in fig. 1, which is a schematic structural diagram of a distributed energy storage systemfrequency support controller 100 according to an embodiment of the present invention, the distributed energy storage systemfrequency support controller 100 is respectively connected to a centralized frequencymodulation control center 301 and anenergy storage system 201, and thecontroller 100 includes: a dataprocessing control unit 101 configured to: receiving the information of the SOC and the frequency of the energy storage system, and connecting theenergy storage system 201 to control theenergy storage system 201 to perform first frequency modulation according to the information of the SOC and the frequency of the energy storage system; adata acquisition unit 102 configured to: the system is respectively connected with the dataprocessing control unit 101 and theenergy storage system 201, and is used for acquiring the information of the SOC and the frequency of the energy storage system and transmitting the information of the SOC and the frequency of the energy storage system to the dataprocessing control unit 101; adata transmission unit 103 configured to: the ethernet is used as a data transmission interface to be respectively connected with the dataprocessing control unit 101 and the centralized regulation andcontrol center 301, and transmits data including the information of the SOC and the frequency of the energy storage system to the centralized frequencymodulation control center 301, and returns the scheduling of the centralized regulation andcontrol center 301 to the dataprocessing control unit 101; adata storage unit 104 configured to: the dataprocessing control unit 101 is connected to the storage unit and is used for periodically storing data including the SOC and frequency information of the energy storage system; a human-machine interaction unit 105 configured to: and the dataprocessing control unit 101 is connected to display the operating state of the energy storage system.

In a specific embodiment, theenergy storage system 201 is a battery energy storage system, the dataprocessing control unit 101 is a core component of thecontroller 100 and mainly completes primary frequency modulation, energy storage recovery and secondary frequency modulation tasks, the dataprocessing control unit 101 is composed of an FPGA module, a gigabit ethernet interface chip, a data storage driving chip, an LCD driving module and a key driving module, and the dataprocessing control unit 101 is simultaneously connected with the human-computer interaction unit 105 and thedata storage unit 104.

In a specific embodiment, the acquisition accuracy of thedata acquisition unit 102 directly affects the system performance, so the accuracy of the acquisition system is guaranteed. The acquisition unit is mainly used for acquiring the SOC of the energy storage system and the frequency information of the energy storage system. The acquisition of the frequency information of the energy storage system firstly needs to carry out voltage reduction treatment, 220V alternating current is changed into 5V alternating current through a transformer, a plurality of voltage zero crossing points are measured, an average value is calculated, the frequency is obtained, and the frequency is updated according to a certain period. The embodiment adopts a model-based method, firstly utilizes an established accurate model to carry out prior estimation of the SOC and prediction of the terminal voltage, then carries out gain correction according to the comparison condition of an actual measured value and a predicted value of the terminal voltage, and continuously carries out iterative optimization to realize the optimal estimation of the SOC. The method can realize high-precision estimation of the SOC on the basis of an accurate model, and the estimation value of the SOC can be converged quickly even if the initial SOC error is large, so that the robustness is good.

In a specific embodiment, thedata storage unit 104 is an SD card, periodically stores data such as frequency information of the energy storage system, SOC of the energy storage system, and operating power at a given time interval, and covers early storage data when the SD card is full, and at the same time, the database can be used to optimize a system algorithm and upgrade the energy storage system.

In a specific embodiment, thedata acquisition unit 102 is composed of a data preprocessing unit and an a/D converter unit, and acquires the SOC and frequency information of the energy storage system.

In one embodiment, thedata transmission unit 103 is used to communicate the distributed energy storage systems with the centralizedfm control center 301 to transmit SOC and scheduling information. Thedata transmission unit 103 adopts ethernet as a data transmission interface, has the capability of transmitting the running state data of the energy storage system in real time, and can transmit the data including the SOC and the frequency information of the energy storage system to the centralized frequencymodulation control center 301; and returns the scheduled output of the centralizedfm control center 301 to the dataprocessing control unit 101.

In an embodiment, the human-computer interaction unit 105 includes an LCD display screen and a key, the LCD display screen displays the operation state of the energy storage system, and an operator can clearly know the operation state of theenergy storage system 201.

In a specific embodiment, the dataprocessing control unit 101 controls theenergy storage system 201 to perform a first frequency modulation according to the energy storage system SOC and the energy storage system frequency information, specifically: theenergy storage system 201 is controlled to charge or discharge according to a given frequency-coefficient curve and the energy storage system SOC, so that the purpose of quickly suppressing the frequency fluctuation of the system is achieved, and the method is quick differential adjustment. And then, the local SOC is sent to the centralizedfrequency control center 301 through thedata transmission unit 103, and second frequency modulation is performed in response to the scheduling of the centralizedfrequency control center 301, so that frequency adjustment without difference is realized. The first-time frequency modulation specific implementation flow is shown in fig. 2:

when the frequency fluctuation is larger than the dead zone, the dataprocessing control unit 101 determines an energy storage frequency modulation coefficient and controls theenergy storage system 201 to perform frequency modulation; when the frequency fluctuation is in the dead zone, determining whether the SOC of the energy storage system is in a threshold range, and if not, determining the recovery coefficient of the energy storage system and controlling theenergy storage system 201 to recover by the dataprocessing control unit 101.

In one embodiment with a sudden increase in the load on theenergy storage system 201, shown in FIG. 3, Δ f_dIs that the set frequency modulation threshold is set to 0.02Hz, Δ f_mIs the maximum value of frequency variation, Δ f_sFor the steady-state frequency after the primary frequency modulation, it can be seen that when the load suddenly increases, the frequency decreases and then increases, the frequency change rate gradually increases and then decreases to zero, and finally the steady-state frequency and the initial frequency have a difference. The primary frequency modulation output of the energy storage system is delta P ═ K_E0Δ f, a positive power indicates charging, and a negative power indicates discharging. Wherein K_E0In relation to SOC, the SOC is set as shown in FIG. 4_minAnd SOC_maxIn order to control the charging and discharging depth, the service life of the battery is respectively set to 10 percent and 90 percent; at S₁、S_low、S_high、S₂Are turning points of the charge and discharge rate of the battery, and are respectively 30%, 45%, 55% and 70%. Wherein S_lowAnd S_highIs the ideal SOC of theenergy storage system 201, i.e. the threshold range of the energy storage system SOC, K in the embodiment_E0max＝1MW/Hz。

The control target of the energy storage system SOC is to keep the SOC at or close to an ideal state, namely within a threshold range, and solve the problem of insufficient frequency modulation capability caused by overhigh or overlow energy storage SOC. As shown in fig. 2, when the grid frequency meets the requirement and the SOC is not in an ideal state, the recovery demand coefficient is calculated according to the SOC, the recovery demand coefficient is constrained by the grid bearing capacity, and the two coefficients are taken as the recovery coefficients, specifically: when the SOC is larger than the SOChigh, the energy storage system is required to be discharged and recovered, and when the SOC is smaller than the SOClow, the energy storage system is required to be charged and recovered. Combining with charge-discharge constraint, and comparing the two as a coefficient, wherein P is_sTo set the power, P_rFor charging and discharging power, 1KW and K are taken in the examples_E1For restoring the demand coefficient, K, of the energy storage system_E2For the charge-discharge constraint coefficient of the energy storage system, in the embodiment, the recovery demand curve and the constraint curve of theenergy storage system 201 are respectively shown in fig. 5 and fig. 6, and the specific expression is as follows:

|K_r|＝min{|K_E1|，K_E2}

sign(K_r)＝sign(K_E1)

P_r＝K_rP_S

further, the dataprocessing control unit 101 is further configured to: and making a second frequency modulation response to the returned scheduling of the centralized regulation andcontrol center 301, wherein the second frequency modulation is that when the frequency fluctuation of the energy storage system is greater than the dead zone, the frequency of the energy storage system is not recovered by only relying on the first frequency modulation, the centralized regulation andcontrol center 301 collects all the SOC of the energy storage system, then reasonably distributes the frequency modulation output according to the system frequency deviation to realize the second frequency modulation, the second frequency modulation output is calculated and distributed by the centralized regulation andcontrol center 301, and is sent to the dataprocessing control unit 101 through thedata transmission unit 103, and then the dataprocessing control unit 101 controls the frequency modulation of theenergy storage system 201.

Five examples in specific embodiments are given below:

example 1

Thedata acquisition unit 102 acquires the system frequency and the energy storage system SOC, and sends the data to the dataprocessing control unit 101, the measured system frequency is 49.985Hz, the system SOC is 20%, Δ f is-0.015, and is smaller than the primary frequency modulation threshold, the dataprocessing control unit 101 controls theenergy storage system 201 to perform energy storage recovery, and K is obtained through calculation_E1＝3/4，K_E2＝1/2，

|K_r|＝min{|K_E1|，K_E2}＝1/2

sign(K_r)＝sign(K_E1)

Theenergy storage system 201 is charged with 500W of power, and as the charging progresses, the charging power is also attenuated continuously.

Example 2

Thedata acquisition unit 102 acquires that the SOC of the energy storage system is 80%, the system frequency is 49.99Hz, and Δ f is 0.01Hz, and the energy storage system performs discharge recovery within the frequency modulation threshold. Combining the energy storage recovery demand curve with the constraint curve, KE 1-3/4, KE 2-3/4,

the energy storage system discharges at 750W and as the discharge progresses, the discharge power decays.

Example 3

When theenergy storage system 201 suddenly has a large load, thedata acquisition unit 102 detects that the system voltage drops to 49.9HZ, and the SOC of the pure system is 9%. At this time, since the frequency drops to exceed the threshold, theenergy storage system 201 needs to discharge, but the energy storage system does not exert any force in combination with the discharge curve of theenergy storage system 201. Because more than one energy storage system 20l participating in frequency modulation can participate in system frequency modulation, the energy storage systems meeting the SOC condition can participate in system frequency modulation, the dispersity of theenergy storage system 201 can be fully utilized, and the fault tolerance rate of the system is improved.

Example 4

Theenergy storage system 201 is subjected to load shedding, the frequency of the energy storage system is increased to 50.1Hz, and the SOC of the energy storage system is 50% as measured by thedata acquisition unit 102. The SOC of the energy storage system is in an ideal interval, K_E0＝K_E0max＝1MW/Hz，Δf＝0.1Hz。

ΔP＝K_E0Δf＝1KW

Theenergy storage system 201 is charged with 1KW of power, and as the charging progresses, the SOC and the frequency deviation change, and the charging power also changes. Primary frequency modulation does not completely eliminate frequency deviation, and secondary frequency modulation is also needed. After thedata transmission unit 103 transmits the energy storage system SOC to the centralized frequencymodulation control center 301, the scheduling information is returned, and the local energy storage system outputs the scheduling information to participate in secondary frequency modulation.

Example 5

When theenergy storage system 201 is connected with a large load, thedata acquisition unit 102 monitors that the frequency suddenly drops to 49.7Hz and the system SOC is 27%. Participating in primary frequency modulation, discharging the energy storage system, and recovering a demand curve and a constraint curve, K, by combining theenergy storage system 201_E0＝17/40*K_Emax＝425KW/Hz，Δf＝-0.3Hz

ΔP＝K_E0Δf＝-127.5KW

Theenergy storage system 201 discharges with 127.5KW power and participates in the second frequency modulation process as inembodiment 4, i.e. receives the scheduling command via the data transmission unit.

A control method corresponding to a distributed energy storage system frequency support controller shown in fig. 1 according to an embodiment of the present disclosure is described below with reference to fig. 1, including: a01: receiving the information of the SOC and the frequency of the energy storage system by using a data processing control unit, and controlling the energy storage system to carry out primary frequency modulation according to the information of the SOC and the frequency of the energy storage system; a02: acquiring the information of an energy storage system SOC and the frequency information of the energy storage system by using a data acquisition unit, and transmitting the information of the energy storage system SOC and the frequency information of the energy storage system to a data processing control unit; a03: the method comprises the steps that a data transmission unit is used for transmitting data comprising energy storage system SOC and energy storage system frequency information to a centralized frequency modulation control center by taking an Ethernet as a data transmission interface, and the dispatching of the centralized frequency modulation control center is returned to a data processing control unit; a04: the data storage unit is used for storing data including the information of the SOC and the frequency of the energy storage system periodically; a05: and displaying the running state of the energy storage system by using the human-computer interaction unit. Fig. 7 is a schematic diagram of a corresponding control method of a distributed energy storage system frequency support controller according to an embodiment of the present invention. Since the control method is the same as the details of the controller implementation method described above with reference to fig. 1, a detailed description of the same is omitted here for the sake of simplicity.

Further, the method also comprises the step of utilizing the data processing control unit to make a second frequency modulation response to the returned scheduling of the centralized regulation and control center.

Further, the controlling the energy storage system to perform the first frequency modulation according to the energy storage system SOC and the energy storage system frequency information specifically includes: when the frequency fluctuation is larger than the dead zone, the data processing control unit determines an energy storage frequency modulation coefficient and controls the energy storage system to perform frequency modulation; and when the frequency fluctuation is in a dead zone, determining whether the SOC of the energy storage system is in a threshold range, and if not, determining the recovery coefficient of the energy storage system and controlling the energy storage system to recover by the data processing control unit.

Further, the method comprises the step of rolling and covering the initial stored data in a time sequence by using the data storage unit when the storage space overflows.

The specific working process of the distributed energy storage system frequency support control method refers to the description of the above distributed energy storage system frequency support controller implementation mode, and is not repeated.

By integrating the distributed energy storage system frequency support controller and the control method provided by the above embodiments, the rapidity of response of theenergy storage system 201 is utilized, the output can be responded according to the SOC and the frequency information of the energy storage system, the output participates in the primary frequency modulation, the distribution of the output by the centralized regulation andcontrol center 301 can also be completed, the secondary frequency modulation of the energy storage system is participated, the system frequency fluctuation is improved, and the operation of the system is supported.

In this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process or method that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process or method.

The foregoing is a more detailed description of the invention in connection with specific preferred embodiments and it is not intended that the invention be limited to these specific details. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.

Claims (10)

Translated fromChinese

1.一种分散式储能系统频率支撑控制器，所述分散式储能系统频率支撑控制器分别与集中式调频控制中心、储能系统相连接，其特征在于，所述控制器包括：1. a decentralized energy storage system frequency support controller, the decentralized energy storage system frequency support controller is respectively connected with a centralized frequency regulation control center, an energy storage system, and it is characterized in that, the controller comprises:数据处理控制单元，被配置成：A data processing control unit, configured to:接收储能系统SOC和储能系统频率信息，并连接所述储能系统用于根据所述储能系统SOC和储能系统频率信息控制所述储能系统进行第一次调频；receiving the energy storage system SOC and energy storage system frequency information, and connecting the energy storage system to control the energy storage system to perform the first frequency modulation according to the energy storage system SOC and the energy storage system frequency information;数据采集单元，被配置成：A data acquisition unit, configured to:分别与所述数据处理控制单元、储能系统连接，用于采集储能系统SOC和储能系统频率信息，并将所述储能系统SOC和储能系统频率信息传送至所述数据处理控制单元；It is respectively connected with the data processing control unit and the energy storage system to collect the SOC and frequency information of the energy storage system, and transmit the SOC and frequency information of the energy storage system to the data processing control unit ;数据传输单元，被配置成：Data transfer unit, configured to:用以太网作为数据传输接口分别与所述数据处理控制单元、集中式调控控制中心相连接，将包括有储能系统SOC、储能系统频率信息的数据传输到集中式调频控制中心，并将所述集中式调控控制中心的调度返回到所述数据处理控制单元；The Ethernet is used as the data transmission interface to be connected with the data processing control unit and the centralized regulation control center, respectively, and the data including the SOC of the energy storage system and the frequency information of the energy storage system are transmitted to the centralized frequency regulation control center, and all the data are transmitted to the centralized frequency regulation control center. The scheduling of the centralized regulation and control center is returned to the data processing control unit;数据存储单元，被配置成：A data storage unit, configured to:与所述数据处理控制单元相连接，用于时间周期性的存储包括有储能系统SOC、储能系统频率信息的数据；is connected with the data processing control unit, and is used to periodically store data including the SOC of the energy storage system and the frequency information of the energy storage system;人机交互单元，被配置成：Human-computer interaction unit, configured to:与所述数据处理控制单元相连接，用于展示储能系统运行状态。It is connected with the data processing control unit to display the operation state of the energy storage system.2.根据权利要求1所述的一种分散式储能系统频率支撑控制器，其特征在于，所述数据处理控制单元还被配置成：2. The frequency support controller of a decentralized energy storage system according to claim 1, wherein the data processing control unit is further configured to:对返回的所述集中式调控控制中心的调度作出第二次调频响应。A second frequency modulation response is made to the returned dispatch of the centralized regulation and control center.3.根据权利要求1所述的一种分散式储能系统频率支撑控制器，其特征在于，所述数据处理控制单元根据所述储能系统SOC和储能系统频率信息控制所述储能系统进行第一次调频，具体为：3 . The frequency support controller of a decentralized energy storage system according to claim 1 , wherein the data processing control unit controls the energy storage system according to the energy storage system SOC and energy storage system frequency information. 4 . Perform the first frequency modulation, specifically:当频率波动大于死区时，所述数据处理控制单元确定储能调频系数并控制所述储能系统进行调频；当频率波动在死区内时，确定所述储能系统SOC是否在阈值范围内，若否，则所述数据处理控制单元确定所述储能系统恢复系数并控制所述储能系统进行恢复。When the frequency fluctuation is greater than the dead zone, the data processing control unit determines the frequency regulation coefficient of the energy storage system and controls the energy storage system to perform frequency regulation; when the frequency fluctuation is within the dead zone, determines whether the SOC of the energy storage system is within the threshold range , if not, the data processing control unit determines the energy storage system recovery coefficient and controls the energy storage system to recover.4.根据权利要求1所述的一种分散式储能系统频率支撑控制器，其特征在于，所述数据处理控制单元包括FPGA芯片、千兆以太网接口芯片、数据存储驱动芯片、LCD驱动模块以及按键驱动模块。4. The frequency support controller of a decentralized energy storage system according to claim 1, wherein the data processing control unit comprises an FPGA chip, a Gigabit Ethernet interface chip, a data storage driver chip, and an LCD driver module And the button driver module.5.根根据权利要求1所述的一种分散式储能系统频率支撑控制器，其特征在于，所述人机交互单元包括LCD显示屏和按键。5 . The frequency support controller of a decentralized energy storage system according to claim 1 , wherein the human-computer interaction unit comprises an LCD display screen and buttons. 6 .6.根据权利要求1所述的一种分散式储能系统频率支撑控制器，其特征在于，所述数据存储单元还被配置成：6. The frequency support controller of a decentralized energy storage system according to claim 1, wherein the data storage unit is further configured to:当存储空间出现溢出时，按时间顺序滚动覆盖最初的存储数据。When the storage space overflows, the initial storage data is rolled over in chronological order.7.一种分散式储能系统频率支撑控制方法，其特征在于，所述方法包括：7. A frequency support control method for a decentralized energy storage system, wherein the method comprises:利用数据处理控制单元接收储能系统SOC和储能系统频率信息，以及根据所述储能系统SOC和储能系统频率信息控制所述储能系统进行第一次调频；Utilize the data processing control unit to receive the energy storage system SOC and energy storage system frequency information, and control the energy storage system to perform the first frequency modulation according to the energy storage system SOC and the energy storage system frequency information;利用数据采集单元采集储能系统SOC和储能系统频率信息，并将所述储能系统SOC和储能系统频率信息传送至所述数据处理控制单元；Use a data acquisition unit to collect energy storage system SOC and energy storage system frequency information, and transmit the energy storage system SOC and energy storage system frequency information to the data processing control unit;利用数据传输单元用以太网作为数据传输接口将包括有储能系统SOC、储能系统频率信息的数据传输到集中式调频控制中心，并将所述集中式调控控制中心的调度返回到所述数据处理控制单元；Utilize the data transmission unit to use Ethernet as the data transmission interface to transmit the data including the SOC of the energy storage system and the frequency information of the energy storage system to the centralized frequency regulation control center, and return the scheduling of the centralized regulation and control center to the data processing control unit;利用数据存储单元进行时间周期性的存储包括有储能系统SOC、储能系统频率信息的数据；Use the data storage unit to periodically store the data including the SOC of the energy storage system and the frequency information of the energy storage system;利用人机交互单元展示储能系统运行状态。Use the human-computer interaction unit to display the operating status of the energy storage system.8.根据权利要求7所述的一种分散式储能系统频率支撑控制方法，其特征在于，所述方法还包括利用所述数据处理控制单元对返回的所述集中式调控控制中心的调度作出第二次调频响应。8 . The frequency support control method of a decentralized energy storage system according to claim 7 , wherein the method further comprises making use of the data processing control unit to make a schedule of the returned centralized regulation and control center. 9 . Second FM response.9.根据权利要求7所述的一种分散式储能系统频率支撑控制方法，其特征在于，所述根据所述储能系统SOC和储能系统频率信息控制所述储能系统进行第一次调频，具体为：9 . The frequency support control method of a decentralized energy storage system according to claim 7 , wherein the energy storage system is controlled to perform the first time according to the energy storage system SOC and energy storage system frequency information. 10 . Frequency modulation, specifically:当频率波动大于死区时，所述数据处理控制单元确定储能调频系数并控制所述储能系统进行调频；当频率波动在死区内时，确定所述储能系统SOC是否在阈值范围内，若否，则所述数据处理控制单元确定所述储能系统恢复系数并控制所述储能系统进行恢复。When the frequency fluctuation is greater than the dead zone, the data processing control unit determines the frequency regulation coefficient of the energy storage system and controls the energy storage system to perform frequency regulation; when the frequency fluctuation is within the dead zone, determines whether the SOC of the energy storage system is within the threshold range , if not, the data processing control unit determines the energy storage system recovery coefficient and controls the energy storage system to recover.10.根据权利要求7所述的一种分散式储能系统频率支撑控制方法，其特征在于，所述方法还包括利用数据存储单元在存储空间出现溢出时，按时间顺序滚动覆盖最初的存储数据。10 . The frequency support control method of a distributed energy storage system according to claim 7 , wherein the method further comprises using the data storage unit to roll over the initial storage data in chronological order when the storage space overflows. 11 . .

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