WO2022110983A1 - Bms cooperative control system and method for electrochemical energy storage power station - Google Patents
Bms cooperative control system and method for electrochemical energy storage power station Download PDFInfo
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
- H02J7/0048—Detection of remaining charge capacity or state of charge [SOC]
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/44—Methods for charging or discharging
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Definitions
- the present invention provides a BMS collaborative control system and method for an electrochemical energy storage power station, which interconnects the BMSs of different energy storage compartments, realizes the sharing of the battery SOC of each energy storage compartment, and enables each energy storage compartment to share the SOC.
- the BMS integrates its own SOC and the SOC of other cabins, and determines whether the battery in the cabin needs to be charged and discharged to keep its own SOC and the SOC of other cabins at the same level, so as to realize the coordinated control of the entire station BMS.
- it also includes a communication network for data between the battery management system BMS and the energy storage converter PCS, between the energy storage converter PCS and the energy management system EMS, and between the battery management system BMS and the EMS interact.
- the comparison unit further includes calculating a discharge cut-off threshold value during discharging, and when the battery state of charge SOC data collected by the corresponding collection unit is greater than the discharge cut-off threshold value, continue to discharge, otherwise output a stop discharge request signal; the comparison unit further includes: The charging cut-off threshold is calculated during charging, and when the SOC data of the battery state of charge collected by the corresponding acquisition unit is less than the charging cut-off threshold, the charging is continued, otherwise a stop charging request signal is output.
- the energy management system EMS when receiving a charge and discharge request, controls the corresponding energy storage converter PCS to charge and discharge the energy storage compartment.
- the discharge cut-off threshold is calculated, and when the battery state of charge SOC data collected by the corresponding acquisition unit is greater than the discharge cut-off threshold, the discharge is continued, otherwise a stop discharge request signal is output;
- the i-th battery management system BMS i calculates the charging cut-off threshold during charging. When the battery state of charge SOC data collected by the corresponding acquisition unit is less than the charging cut-off threshold, it continues to charge, otherwise it outputs a stop charging request signal.
- each of the battery management systems BMS collects the battery state of charge SOC data of the energy storage compartment where it is located and sends it through a communication network, and obtains the battery state of charge SOC data of other energy storage compartments through the communication network.
- the i-th battery management system BMS i obtains the battery state of charge SOC data of other battery management systems
- the i-th battery management system BMS i judges the current state of the i-th energy storage compartment; if it is in a stationary state, go to step (3), otherwise return to step (1);
- the i-th battery management system BMS i judges whether its own battery state of charge SOC i satisfies: k 1 *SOC ave ⁇ SOC i ⁇ k 2 *SOC ave , where k 1 and k 2 are charging and discharging threshold coefficients respectively , k 1 is less than 1, and k 2 is greater than 1; if it is satisfied, go back to step (3); otherwise, if SOC i >k 2 *SOC ave , then go to step (5), if SOC i ⁇ k 1 *SOC ave , then Enter step (7);
- the i-th battery management system BMS i sends a discharge request signal to the energy storage monitoring and energy management system EMS, and the energy storage monitoring and energy management system EMS sends a discharge control command to the i-th energy storage converter PCS i to control the The i-th energy storage converter PCS i discharges the i-th energy storage tank;
- the BMS of each energy storage compartment of the present invention integrates its own SOC and the SOC of other compartments to determine whether the battery in the compartment needs to be charged and discharged to keep its own SOC and the SOC of other compartments at the same level, and the balance of SOC among compartments is conducive to storage The overall efficient operation of the power station.
- Figure 1 is a schematic diagram of an existing energy storage station
- Fig. 3 is the control flow chart of BMS 1 .
- the energy storage cabin 1 built-in energy storage battery, battery management system (Battery Management System, hereinafter referred to as: BMS), etc.
- BMS Battery Management System
- an energy storage station usually contains one or more Storage compartment.
- BMS Battery nanny or battery housekeeper.
- the acquisition module, control module, display module, communication module, and supporting electrical equipment, etc. are usually installed in the energy storage compartment, and one energy storage compartment can be configured with one or more sets of BMS.
- EMS energy storage monitoring and energy management system, energy management system, referred to as: EMS
- EMS energy management system
- a computer application system for information collection, processing, monitoring, control, operation management and other functions of electrical secondary equipment and other in-station equipment such as video and environmental monitoring equipment, and for energy flow optimization and scheduling according to the application scenarios of energy storage stations.
- the energy storage station is equipped with a station-level energy management system.
- a communication network 6 is set between the PCS and the EMS for data exchange between the PCS and the EMS.
- a communication network 7 is set between the BMS and the EMS for data exchange between the BMS and the EMS.
- Another aspect of the present invention provides a BMS collaborative control method for an electrochemical energy storage power station, comprising the following steps:
- the i-th battery management system BMS i obtains the battery state of charge SOC data of other battery management systems through the communication network 8;
- the i-th battery management system BMS i judges the current state of the i-th energy storage compartment; if it is in a stationary state, go to step (3), if it is a charging state, go to step (1), if it is a discharging state, go to step (1) step 1);
- the i-th battery management system BMS i calculates the battery state-of-charge average value SOC ave of all energy storage compartments
- the i-th battery management system BMS i judges whether its own battery state of charge SOC i satisfies: k 1 *SOC ave ⁇ SOC i ⁇ k 2 *SOC ave , where k 1 and k 2 are charging and discharging threshold coefficients respectively , k 1 is less than 1, and k 2 is greater than 1; if it is satisfied, go back to step (3); otherwise, if SOC i >k 2 *SOC ave , then go to step (5), if SOC i ⁇ k 1 *SOC ave , then Enter step (7);
- Step 1 the BMS 1 obtains the SOC data SOC 1 to SOC n of the BMS 2 to BMS n through the communication network 8;
- Step 3 BMS 1 calculates the SOC average SOC ave of all energy storage compartments
- Step 4 BMS 1 judges whether its own SOC 1 satisfies condition 1: k 1 *SOC ave ⁇ SOC 1 ⁇ k 2 *SOC ave , where k 1 and k 2 are SOC coefficients, k 1 is less than 1, and k 2 is greater than 1; if If SOC 1 satisfies condition 1, go back to step 3; if SOC 1 does not satisfy condition 1, then further judge, if SOC 1 >k 2 *SOC ave , go to step 5, if SOC 1 ⁇ k 1 *SOC ave , go to step 5 step 7;
- Step 5 The BMS 1 sends a discharge request signal to the EMS, and the EMS sends a discharge control command to the PCS 1 to control the PCS 1 to discharge the energy storage compartment 1;
- Step 6 BMS 1 calculates whether its own SOC 1 satisfies condition 2: SOC 1 ⁇ k 3 *SOC ave , where k 3 is the SOC coefficient, 1 ⁇ k 3 ⁇ k 2 ; if SOC 1 does not satisfy condition 2, continue to discharge, If the SOC 1 satisfies the condition 2, the BMS 1 sends a stop discharge request signal to the EMS, and the EMS sends a stop discharge control command to the PCS 1 to control the PCS 1 to stop the discharge operation of the energy storage compartment 1, and turn to step 1.
- Step 7 The BMS 1 sends a charging request signal to the EMS, and the EMS sends a charging control command to the PCS 1 to control the PCS 1 to charge the energy storage compartment 1; the BMS 1 calculates whether its own SOC 1 satisfies the condition 3: SOC 1 ⁇ k 4 * SOC ave , where k 4 is the SOC coefficient, k 1 ⁇ k 4 ⁇ 1;
- SOC 1 does not meet condition 3
- BMS 1 sends a stop charging request signal to EMS
- EMS sends a stop charging control command to PCS 1 , and controls PCS 1 to stop charging energy storage compartment 1 operation, go to step 1.
- the present invention relates to a BMS collaborative control system and method for an electrochemical energy storage power station.
- a communication network is set up for the BMS of each energy storage compartment, and the BMSs of different energy storage compartments are interconnected to realize the battery SOC of each energy storage compartment. Sharing, the BMS of each energy storage cabin can obtain the battery SOC and other data of the BMS in all other cabins.
- the BMS of each energy storage cabin integrates its own SOC and the SOC of other cabins, and determines whether the battery in the cabin needs to be charged and discharged to keep its own SOC and the SOC of other cabins at the same level.
- the SOC balance between cabins is conducive to the overall efficient operation of the energy storage power station. Through holographic data analysis, it interacts with EMS and PCS in two directions to realize the coordinated control of the entire station BMS.
- the embodiments of the present application may be provided as a method, a system, or a computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) having computer-usable program code embodied therein.
- computer-usable storage media including, but not limited to, disk storage, CD-ROM, optical storage, etc.
- These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory result in an article of manufacture comprising instruction means, the instructions
- the apparatus implements the functions specified in the flow or flow of the flowcharts and/or the block or blocks of the block diagrams.
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Abstract
The present invention relates to a BMS cooperative control system and method for an electrochemical energy storage power station. A communication network is provided for a BMS of each energy storage cabin, and BMSs of different energy storage cabins are interconnected and intercommunicate, so that battery SOC sharing of each energy storage cabin is realized, and the BMS of each energy storage cabin can acquire data such as a battery SOC of BMSs in all the other cabins. The BMS of each energy storage cabin determines, by synthesizing the SOC thereof and the SOC of other cabins, whether the battery of the present cabin needs to be charged and discharged to keep the SOC thereof be at the same level as the SOC of other cabins, and the inter-cabin SOC equalization facilitates the overall efficient operation of the energy storage power station. By means of holographic data analysis, two-way interaction with an EMS and a PCS is further performed, and BMS cooperative control of the whole station is realized.
Description
本发明涉及定位方法技术领域，尤其涉及一种电化学储能电站BMS协同控制***及方法。The invention relates to the technical field of positioning methods, in particular to a BMS cooperative control system and method for an electrochemical energy storage power station.
电化学储能电站(以下简称“储能站”)是采用电化学电池作为储能元件，可进行电能存储、转换及释放的电站。目前，储能站典型运行架构如图1所示。Electrochemical energy storage power station (hereinafter referred to as "energy storage station") is a power station that uses electrochemical cells as energy storage elements to store, convert and release electrical energy. At present, the typical operation structure of the energy storage station is shown in Figure 1.
储能站运行时，电池管理***(Battery Management System，BMS)向储能变流器(Power Conversion System，PCS)和储能监控与能量管理***(energy management system，EMS)提供电池电压、电池温度、电池SOC(电池荷电状态，State of charge，简称SOC，用来反映电池的剩余容量，其数值上定义为剩余容量占电池容量的比值，常用百分数表示。其取值范围为0～1，当SOC＝0时表示电池放电完全，当SOC＝1时表示电池完全充满。)、电池充放电电流等数据。When the energy storage station is running, the battery management system (BMS) provides the battery voltage and battery temperature to the energy storage converter (Power Conversion System, PCS) and the energy storage monitoring and energy management system (energy management system, EMS). , Battery SOC (battery state of charge, State of charge, SOC for short, is used to reflect the remaining capacity of the battery, its value is defined as the ratio of the remaining capacity to the battery capacity, commonly expressed as a percentage. Its value range is 0 ~ 1, When SOC=0, it means that the battery is fully discharged, and when SOC=1, it means that the battery is fully charged.), battery charge and discharge current and other data.
EMS根据电网调度自动化***(以下简称“电网调度”)下发的功率调度指令及BMS提供的电池SOC等数据制定控制策略，控制PCS对储能电池进行充放电管理。在电网调度没有下发功率指令时，储能电池处于静置状态，不进行充放电。BMS和PCS一对一通信，多个BMS与EMS进行多对一通信，BMS之间不进行通信。The EMS formulates control strategies according to the power dispatch instructions issued by the grid dispatch automation system (hereinafter referred to as "grid dispatch") and the battery SOC and other data provided by the BMS, and controls the PCS to manage the charge and discharge of the energy storage batteries. When the power grid dispatcher does not issue a power command, the energy storage battery is in a static state and does not charge and discharge. One-to-one communication between BMS and PCS, many-to-one communication between multiple BMSs and EMS, and no communication between BMSs.
目前，储能站中不同储能舱的BMS相互隔离，信息不共享；另外PCS对储能舱内的电池反复充放电，容易造成不同储能舱间的电池SOC不一致，SOC 不一致会对储能站整体优化运行不利。At present, the BMSs of different energy storage compartments in the energy storage station are isolated from each other, and information is not shared. In addition, the PCS repeatedly charges and discharges the batteries in the energy storage compartments, which is likely to cause inconsistent SOC of the batteries between different energy storage compartments. The inconsistent SOC will affect the energy storage. The overall optimal operation of the station is unfavorable.
发明内容SUMMARY OF THE INVENTION
针对现有技术中存在的问题，本发明提供一种电化学储能电站BMS协同控制***及方法，将不同储能舱的BMS进行互联互通，实现各储能舱电池SOC共享，各储能舱的BMS综合自身SOC和其它舱的SOC，判断所在舱的电池是否需要充放电来使自身SOC与其它舱的SOC保持相同水平，实现整站BMS协同控制。In view of the problems existing in the prior art, the present invention provides a BMS collaborative control system and method for an electrochemical energy storage power station, which interconnects the BMSs of different energy storage compartments, realizes the sharing of the battery SOC of each energy storage compartment, and enables each energy storage compartment to share the SOC. The BMS integrates its own SOC and the SOC of other cabins, and determines whether the battery in the cabin needs to be charged and discharged to keep its own SOC and the SOC of other cabins at the same level, so as to realize the coordinated control of the entire station BMS.
为达到上述目的，本发明提供了一种电化学储能电站BMS协同控制***，包括若干电池管理***BMS、储能变流器PCS以及储能监控与能量管理***EMS；In order to achieve the above object, the present invention provides a BMS collaborative control system for an electrochemical energy storage power station, including several battery management systems BMS, energy storage converter PCS, and an energy storage monitoring and energy management system EMS;
每个所述电池管理***BMS，用于采集所在储能舱的电池荷电状态SOC数据，并获取其它储能舱的电池荷电状态SOC数据，在确定出需要充放电来使自身电池荷电状态SOC与其它舱的电池荷电状态SOC保持相同水平时，向储能监控与能量管理***EMS发送充放电请求；Each of the battery management system BMS is used to collect the battery state of charge SOC data of the energy storage compartment where it is located, and obtain the battery state of charge SOC data of other energy storage compartments. When the state SOC remains the same as the battery state of charge SOC of other cabins, it sends a charge and discharge request to the energy storage monitoring and energy management system EMS;
所述能量管理***EMS，用于在接收到充放电请求时，控制对应储能变流器PCS对储能舱进行充放电。The energy management system EMS is used to control the corresponding energy storage converter PCS to charge and discharge the energy storage compartment when a charge and discharge request is received.
进一步地，还包括通信网络，用于所述电池管理***BMS与储能变流器PCS之间、储能变流器PCS与能量管理***EMS之间、电池管理***BMS与EMS之间的数据交互。Further, it also includes a communication network for data between the battery management system BMS and the energy storage converter PCS, between the energy storage converter PCS and the energy management system EMS, and between the battery management system BMS and the EMS interact.
进一步地，所述电池管理***BMS包括采集单元、通讯单元、存储单元、计算单元和比较单元；Further, the battery management system BMS includes a collection unit, a communication unit, a storage unit, a calculation unit and a comparison unit;
采集单元，用于采集所在储能舱的电池荷电状态SOC数据存储至所述存储单元并通过所述通讯单元用于向所述通信网络发送；a collection unit, configured to collect the battery state of charge SOC data of the energy storage compartment where it is located, store it in the storage unit, and send it to the communication network through the communication unit;
通讯单元，用于通过所述通信网络读取其它储能舱的电池荷电状态SOC数据并存储至存储单元；a communication unit, configured to read the battery state-of-charge SOC data of other energy storage compartments through the communication network and store it in the storage unit;
所述计算单元，用于计算基于所述存储单元存储的所有储能舱的电池荷 电状态SOC数据计算均值；the calculation unit, configured to calculate the mean value based on the battery state of charge SOC data of all the energy storage compartments stored by the storage unit;
所述比较单元基于所述均值生成充电阈值和放电阈值，将对应采集单元采集的电池荷电状态SOC数据与充电阈值和放电阈值比较，如果高于放电阈值，则输出放电请求信号；如果低于充电阈值，则输出充电请求信号。The comparison unit generates a charging threshold and a discharging threshold based on the average value, compares the battery state of charge SOC data collected by the corresponding acquisition unit with the charging threshold and the discharging threshold, and if it is higher than the discharging threshold, outputs a discharging request signal; If the charging threshold is reached, a charging request signal is output.
进一步地，所述比较单元还包括在放电时计算放电截止阈值，当对应采集单元采集的电池荷电状态SOC数据大于放电截止阈值，继续放电，否则输出停止放电请求信号；所述比较单元还包括在充电时计算充电截止阈值，当对应采集单元采集的电池荷电状态SOC数据小于充电截止阈值，继续充电，否则输出停止充电请求信号。Further, the comparison unit further includes calculating a discharge cut-off threshold value during discharging, and when the battery state of charge SOC data collected by the corresponding collection unit is greater than the discharge cut-off threshold value, continue to discharge, otherwise output a stop discharge request signal; the comparison unit further includes: The charging cut-off threshold is calculated during charging, and when the SOC data of the battery state of charge collected by the corresponding acquisition unit is less than the charging cut-off threshold, the charging is continued, otherwise a stop charging request signal is output.
进一步地，所述放电截止阈值小于所述放电阈值；所述充电截止阈值大于所述充电阈值。Further, the discharge cutoff threshold is smaller than the discharge threshold; the charge cutoff threshold is greater than the charge threshold.
本发明第二面提供一种电化学储能电站BMS协同控制方法，包括以下步骤：The second aspect of the present invention provides a BMS collaborative control method for an electrochemical energy storage power station, comprising the following steps:
(1)第i个电池管理***BMS
i采集所在储能舱的电池荷电状态SOC数据，获取其它电池管理***电池荷电状态SOC数据；
(1) The i-th battery management system BMS i collects the battery state of charge SOC data of the energy storage compartment where it is located, and obtains the battery state of charge SOC data of other battery management systems;
(2)第i个电池管理***BMS
i判断第i个储能舱当前状态；在确定出需要充放电来使自身电池荷电状态SOC与其它舱的电池荷电状态SOC保持相同水平时，发送充放电请求；
(2) The i-th battery management system BMS i judges the current state of the i-th energy storage compartment; when it is determined that charging and discharging are required to keep its own battery state of charge SOC and the battery state of charge SOC of other compartments at the same level, send charge and discharge request;
(3)能量管理***EMS，接收到充放电请求时，控制对应储能变流器PCS对储能舱进行充放电。(3) The energy management system EMS, when receiving a charge and discharge request, controls the corresponding energy storage converter PCS to charge and discharge the energy storage compartment.
进一步地，第i个电池管理***BMS
i放电时计算放电截止阈值，当对应采集单元采集的电池荷电状态SOC数据大于放电截止阈值，继续放电，否则输出停止放电请求信号；
Further, when the i-th battery management system BMS i is discharged, the discharge cut-off threshold is calculated, and when the battery state of charge SOC data collected by the corresponding acquisition unit is greater than the discharge cut-off threshold, the discharge is continued, otherwise a stop discharge request signal is output;
第i个电池管理***BMS
i在充电时计算充电截止阈值，当对应采集单元采集的电池荷电状态SOC数据小于充电截止阈值，继续充电，否则输出停止充电请求信号。
The i-th battery management system BMS i calculates the charging cut-off threshold during charging. When the battery state of charge SOC data collected by the corresponding acquisition unit is less than the charging cut-off threshold, it continues to charge, otherwise it outputs a stop charging request signal.
进一步地，所述放电截止阈值小于所述放电阈值；所述充电截止阈值大 于所述充电阈值。Further, the discharge cutoff threshold is smaller than the discharge threshold; the charge cutoff threshold is greater than the charge threshold.
进一步地，每个所述电池管理***BMS采集所在储能舱的电池荷电状态SOC数据并通过通信网络发送，通过通信网络获取其它储能舱的电池荷电状态SOC数据。Further, each of the battery management systems BMS collects the battery state of charge SOC data of the energy storage compartment where it is located and sends it through a communication network, and obtains the battery state of charge SOC data of other energy storage compartments through the communication network.
本发明第三方面提供一种电化学储能电站BMS协同控制方法，包括以下步骤：A third aspect of the present invention provides a BMS collaborative control method for an electrochemical energy storage power station, comprising the following steps:
(1)第i个电池管理***BMS
i获取其它电池管理***电池荷电状态SOC数据；
(1) The i-th battery management system BMS i obtains the battery state of charge SOC data of other battery management systems;
(2)第i个电池管理***BMS
i判断第i个储能舱当前状态；如果是静置状态则进入步骤(3)，否则返回步骤(1)；
(2) The i-th battery management system BMS i judges the current state of the i-th energy storage compartment; if it is in a stationary state, go to step (3), otherwise return to step (1);
(3)第i个电池管理***BMS
i计算出所有储能舱的电池荷电状态平均值SOC
ave；
(3) The i-th battery management system BMS i calculates the battery state-of-charge average value SOC ave of all energy storage compartments;
(4)第i个电池管理***BMS
i判断自身电池荷电状态SOC
i是否满足：k
1*SOC
ave≤SOC
i≤k
2*SOC
ave，其中k
1、k
2分别为充电、放电阈值系数，k
1小于1，k
2大于1；如果满足则返回步骤(3)；否则，如果SOC
i﹥k
2*SOC
ave，则进入步骤(5)，如果SOC
i﹤k
1*SOC
ave，则进入步骤(7)；
(4) The i-th battery management system BMS i judges whether its own battery state of charge SOC i satisfies: k 1 *SOC ave ≤SOC i ≤k 2 *SOC ave , where k 1 and k 2 are charging and discharging threshold coefficients respectively , k 1 is less than 1, and k 2 is greater than 1; if it is satisfied, go back to step (3); otherwise, if SOC i ﹥k 2 *SOC ave , then go to step (5), if SOC i ﹤k 1 *SOC ave , then Enter step (7);
(5)第i个电池管理***BMS
i向储能监控与能量管理***EMS发出放电请求信号，储能监控与能量管理***EMS向第i个储能变流器PCS
i发出放电控制命令，控制第i个储能变流器PCS
i对第i个储能舱进行放电操作；
(5) The i-th battery management system BMS i sends a discharge request signal to the energy storage monitoring and energy management system EMS, and the energy storage monitoring and energy management system EMS sends a discharge control command to the i-th energy storage converter PCS i to control the The i-th energy storage converter PCS i discharges the i-th energy storage tank;
(6)第i个电池管理***BMS
i计算是否满足：SOC
i≤k
3*SOC
ave，其中k
3为放电截止系数，1﹤k
3﹤k
2；如果不满足则继续放电，如果满足，则第i个电池管理***BMS
i向储能监控与能量管理***EMS发出停止放电请求信号，储能监控与能量管理***EMS向第i个储能变流器PCS
i发出停止放电控制命令，停止对第i个储能舱1的放电操作，并返回步骤(1)；
(6) Whether the calculation of the i-th battery management system BMS i satisfies: SOC i ≤k 3 *SOC ave , where k 3 is the discharge cut-off coefficient, 1﹤k 3 ﹤k 2 ; if not satisfied, continue to discharge, if satisfied, Then the i-th battery management system BMS i sends a stop discharge request signal to the energy storage monitoring and energy management system EMS, and the energy storage monitoring and energy management system EMS sends a stop discharge control command to the i-th energy storage converter PCS i to stop the discharge. The discharge operation for the i-th energy storage compartment 1, and return to step (1);
(7)第i个电池管理***BMS
i向储能监控与能量管理***EMS发出充电请求信号，储能监控与能量管理***EMS向第i个储能变流器PCS
i发出充 电控制命令，控制第i个储能变流器PCS
i对第i个储能舱进行充电操作；
(7) The i-th battery management system BMS i sends a charging request signal to the energy storage monitoring and energy management system EMS, and the energy storage monitoring and energy management system EMS sends a charging control command to the i-th energy storage converter PCS i to control the The i-th energy storage converter PCS i charges the i-th energy storage compartment;
(8)第i个电池管理***BMS
i计算是否满足：SOC
i≥k
4*SOC
ave，其中k
4为充电截止SOC系数，k
1﹤k
4﹤1；如果SOC
1不满足，则继续充电；如果满足，则第i个电池管理***BMS
i向储能监控与能量管理***EMS发出停止充电请求信号，储能监控与能量管理***EMS向第i个储能变流器PCS
i发出停止充电控制命令，控制第i个储能变流器PCS
i对第i个储能舱停止充电操作，并返回步骤(1)。
(8) Whether the calculation of the i-th battery management system BMS i satisfies: SOC i ≥k 4 *SOC ave , where k 4 is the charge cut-off SOC coefficient, k 1 ﹤k 4 ﹤1; if SOC 1 is not satisfied, continue charging ; If satisfied, the i-th battery management system BMS i sends a stop charging request signal to the energy storage monitoring and energy management system EMS, and the energy storage monitoring and energy management system EMS sends a stop charging signal to the i-th energy storage converter PCS i . The control command controls the i-th energy storage converter PCS i to stop the charging operation for the i-th energy storage compartment, and returns to step (1).
本发明的上述技术方案具有如下有益的技术效果：The above-mentioned technical scheme of the present invention has the following beneficial technical effects:
(1)本发明不同储能舱的BMS进行互联互通，实现各储能舱电池SOC共享，每个储能舱的BMS可以获取其它所有舱内BMS的电池SOC等数据，即每个储能舱都获得整站电池SOC信息，通过全息数据分析进而与EMS、PCS双向互动，实现整站BMS协同控制。(1) The BMSs of different energy storage compartments of the present invention are interconnected to realize the sharing of the battery SOC of each energy storage compartment. The BMS of each energy storage compartment can obtain the battery SOC and other data of the BMS in all other compartments, that is, each energy storage compartment. Both obtain the battery SOC information of the whole station, and then interact with EMS and PCS in two directions through holographic data analysis to realize the coordinated control of the whole station BMS.
(2)本发明各储能舱的BMS综合自身SOC和其它其它舱的SOC，判断所在舱的电池是否需要充放电来使自身SOC与其它舱的SOC保持相同水平，舱间SOC均衡有利于储能电站整体高效运行。(2) The BMS of each energy storage compartment of the present invention integrates its own SOC and the SOC of other compartments to determine whether the battery in the compartment needs to be charged and discharged to keep its own SOC and the SOC of other compartments at the same level, and the balance of SOC among compartments is conducive to storage The overall efficient operation of the power station.
图1是现有储能站示意图；Figure 1 is a schematic diagram of an existing energy storage station;
图2本发明储能站示意图；2 is a schematic diagram of an energy storage station of the present invention;
图3为BMS
1控制流程图。
Fig. 3 is the control flow chart of BMS 1 .
为使本发明的目的、技术方案和优点更加清楚明了，下面结合具体实施方式并参照附图，对本发明进一步详细说明。应该理解，这些描述只是示例性的，而并非要限制本发明的范围。此外，在以下说明中，省略了对公知结构和技术的描述，以避免不必要地混淆本发明的概念。In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the specific embodiments and the accompanying drawings. It should be understood that these descriptions are exemplary only and are not intended to limit the scope of the invention. Also, in the following description, descriptions of well-known structures and techniques are omitted to avoid unnecessarily obscuring the concepts of the present invention.
本发明一方面提供一种电化学储能电站BMS协同控制***，包括若干电池管理***BMS、通信网络、储能变流器PCS以及储能监控与能量管理*** EMS；One aspect of the present invention provides a BMS collaborative control system for an electrochemical energy storage power station, including several battery management systems BMS, a communication network, an energy storage converter PCS, and an energy storage monitoring and energy management system EMS;
每个所述电池管理***BMS采集所在储能舱的电池荷电状态SOC数据，并通过所述通信网络获取其它储能舱的电池荷电状态SOC数据，判断所在储能舱的电池是否需要充放电来使自身电池荷电状态SOC与其它舱的电池荷电状态SOC保持相同水平；当判断需要充电时通过对应储能变流器PCS向储能监控与能量管理***EMS发送充电请求，所述能量管理***EMS控制对应储能变流器PCS对储能舱进行充电；当判断需要放电时通过对应储能变流器PCS向储能监控与能量管理***EMS发送放电请求，所述能量管理***EMS控制对应储能变流器PCS对储能舱进行放电。Each of the battery management systems BMS collects the battery state of charge SOC data of the energy storage compartment where it is located, and obtains the battery state of charge SOC data of other energy storage compartments through the communication network, and determines whether the batteries in the energy storage compartment need to be charged. Discharge to keep its own battery state of charge SOC and the battery state of charge SOC of other compartments at the same level; when it is judged that charging is required, a charging request is sent to the energy storage monitoring and energy management system EMS through the corresponding energy storage converter PCS. The energy management system EMS controls the corresponding energy storage converter PCS to charge the energy storage cabin; when it is determined that discharge is required, a discharge request is sent to the energy storage monitoring and energy management system EMS through the corresponding energy storage converter PCS, and the energy management system The EMS controls the corresponding energy storage converter PCS to discharge the energy storage compartment.
如图2所示，储能舱1，内置储能电池、电池管理***(Battery Management System，以下简称：BMS)等，是储能站的能量载体，一个储能站通常包含1个或多个储能舱。As shown in Figure 2, the energy storage cabin 1, built-in energy storage battery, battery management system (Battery Management System, hereinafter referred to as: BMS), etc., is the energy carrier of the energy storage station, and an energy storage station usually contains one or more Storage compartment.
图2中2为BMS，通常称为电池保姆或电池管家，通过智能化管理及维护各个电池单元，防止电池出现过充电和过放电，延长电池的使用寿命，监控电池的状态；包括采集电池信息的采集模组、控制模组、显示模组、通信模组、及配套电气设备等；通常安装在储能舱内，一个储能舱可配置1套或多套BMS。2 in Figure 2 is BMS, usually called battery nanny or battery housekeeper. Through intelligent management and maintenance of each battery unit, it can prevent battery from overcharging and overdischarging, prolong battery life, and monitor battery status; including collecting battery information The acquisition module, control module, display module, communication module, and supporting electrical equipment, etc. are usually installed in the energy storage compartment, and one energy storage compartment can be configured with one or more sets of BMS.
图2中3为PCS(储能变流器，Power Conversion System，简称：PCS)，用于实现电池与电网之间的双向能量传递，通过控制策略对电池充放电管理、对网侧负荷功率的跟踪、对正常及孤岛运行方式下网侧电压的控制等，一般一个PCS对应一个储能舱。3 in Figure 2 is PCS (Power Conversion System, PCS for short), which is used to realize two-way energy transfer between the battery and the power grid. Tracking, control of grid-side voltage in normal and island operation modes, etc., generally one PCS corresponds to one energy storage compartment.
图2中4为EMS(储能监控与能量管理***，energy management system，简称：EMS)，是以应用计算机、网络和通信技术为基础，实现对储能站内电池管理***、功率变换***、配电二次设备以及视频及环境监控设备等其它站内设备的信息采集、处理、监视、控制、运行管理等功能，并按照储能站的应用场景进行能量流的优化和调度的计算机应用***，一个储能站配置一套站级能量管理***。4 in Figure 2 is EMS (energy storage monitoring and energy management system, energy management system, referred to as: EMS), which is based on the application of computer, network and communication technology to realize the battery management system, power conversion system, distribution system in the energy storage station. A computer application system for information collection, processing, monitoring, control, operation management and other functions of electrical secondary equipment and other in-station equipment such as video and environmental monitoring equipment, and for energy flow optimization and scheduling according to the application scenarios of energy storage stations. The energy storage station is equipped with a station-level energy management system.
BMS与PCS之间设置有通信网络5，用于BMS与PCS之间的数据交互。A communication network 5 is provided between the BMS and the PCS for data interaction between the BMS and the PCS.
PCS与EMS之间设置有通信网络6，用于PCS与EMS之间的数据交互。A communication network 6 is set between the PCS and the EMS for data exchange between the PCS and the EMS.
BMS与EMS之间设置有通信网络7，用于BMS与EMS之间的数据交互。A communication network 7 is set between the BMS and the EMS for data exchange between the BMS and the EMS.
本发明设置了通讯网络8，用于各个BMS之间的通讯。In the present invention, a communication network 8 is set up for communication between various BMSs.
在本申请的实施例中，所述采集单元、所述通讯单元分别可以是具有通信接口能够实现通信协议的一个或多个处理器或者芯片；所述处理器或者芯片执行程序相关的代码实现相应的功能。所述计算单元、所述比较单元分别可以是一个或多个处理器或者控制器；所述处理器或者控制器执行程序相关的代码实现相应的功能。所述存储单元可以为存储器。In the embodiments of the present application, the acquisition unit and the communication unit may be one or more processors or chips with communication interfaces capable of implementing communication protocols, respectively; the processors or chips execute program-related codes to implement corresponding function. The computing unit and the comparing unit may be one or more processors or controllers, respectively; the processors or controllers execute program-related codes to implement corresponding functions. The storage unit may be a memory.
本发明另一方面提供一种电化学储能电站BMS协同控制方法，包括以下步骤：Another aspect of the present invention provides a BMS collaborative control method for an electrochemical energy storage power station, comprising the following steps:
(1)第i个电池管理***BMS
i通过通讯网络8获取其它电池管理***电池荷电状态SOC数据；
(1) The i-th battery management system BMS i obtains the battery state of charge SOC data of other battery management systems through the communication network 8;
(2)第i个电池管理***BMS
i判断第i个储能舱当前状态；如果是静置状态则进入步骤(3)，如果是充电状态则进入步骤(1)，如果是放电状态则进入步骤(1)；
(2) The i-th battery management system BMS i judges the current state of the i-th energy storage compartment; if it is in a stationary state, go to step (3), if it is a charging state, go to step (1), if it is a discharging state, go to step (1) step 1);
(3)第i个电池管理***BMS
i计算出所有储能舱的电池荷电状态平均值SOC
ave；
(3) The i-th battery management system BMS i calculates the battery state-of-charge average value SOC ave of all energy storage compartments;
(4)第i个电池管理***BMS
i判断自身电池荷电状态SOC
i是否满足：k
1*SOC
ave≤SOC
i≤k
2*SOC
ave，其中k
1、k
2分别为充电、放电阈值系数，k
1小于1，k
2大于1；如果满足则返回步骤(3)；否则，如果SOC
i﹥k
2*SOC
ave，则进入步骤(5)，如果SOC
i﹤k
1*SOC
ave，则进入步骤(7)；
(4) The i-th battery management system BMS i judges whether its own battery state of charge SOC i satisfies: k 1 *SOC ave ≤SOC i ≤k 2 *SOC ave , where k 1 and k 2 are charging and discharging threshold coefficients respectively , k 1 is less than 1, and k 2 is greater than 1; if it is satisfied, go back to step (3); otherwise, if SOC i ﹥k 2 *SOC ave , then go to step (5), if SOC i ﹤k 1 *SOC ave , then Enter step (7);
(5)第i个电池管理***BMS
i向储能监控与能量管理***EMS发出放电请求信号，储能监控与能量管理***EMS向第i个储能变流器PCS
i发出放电控制命令，控制第i个储能变流器PCS
i对第i个储能舱进行放电操作；
(5) The i-th battery management system BMS i sends a discharge request signal to the energy storage monitoring and energy management system EMS, and the energy storage monitoring and energy management system EMS sends a discharge control command to the i-th energy storage converter PCS i to control the The i-th energy storage converter PCS i discharges the i-th energy storage tank;
(6)第i个电池管理***BMS
i计算是否满足：SOC
i≤k
3*SOC
ave，其中k
3 为放电截止系数，1﹤k
3﹤k
2；如果不满足则继续放电，如果满足，则第i个电池管理***BMS
i向储能监控与能量管理***EMS发出停止放电请求信号，储能监控与能量管理***EMS向第i个储能变流器PCS
i发出停止放电控制命令，停止对第i个储能舱1的放电操作，并返回步骤(1)；
(6) Whether the calculation of the i-th battery management system BMS i satisfies: SOC i ≤k 3 *SOC ave , where k 3 is the discharge cut-off coefficient, 1﹤k 3 ﹤k 2 ; if not satisfied, continue to discharge, if satisfied, Then the i-th battery management system BMS i sends a stop discharge request signal to the energy storage monitoring and energy management system EMS, and the energy storage monitoring and energy management system EMS sends a stop discharge control command to the i-th energy storage converter PCS i to stop the discharge. The discharge operation for the i-th energy storage compartment 1, and return to step (1);
(7)第i个电池管理***BMS
i向储能监控与能量管理***EMS发出充电请求信号，储能监控与能量管理***EMS向第i个储能变流器PCS
i发出充电控制命令，控制第i个储能变流器PCS
i对第i个储能舱进行充电操作；
(7) The i-th battery management system BMS i sends a charging request signal to the energy storage monitoring and energy management system EMS, and the energy storage monitoring and energy management system EMS sends a charging control command to the i-th energy storage converter PCS i to control the The i-th energy storage converter PCS i charges the i-th energy storage compartment;
(8)第i个电池管理***BMS
i计算是否满足：SOC
i≥k
4*SOC
ave，其中k
4为充电截止SOC系数，k
1﹤k
4﹤1；如果SOC
1不满足，则继续充电；如果满足，则第i个电池管理***BMS
i向储能监控与能量管理***EMS发出停止充电请求信号，储能监控与能量管理***EMS向第i个储能变流器PCS
i发出停止充电控制命令，控制第i个储能变流器PCS
i对第i个储能舱停止充电操作，并返回步骤(1)。
(8) Whether the calculation of the i-th battery management system BMS i satisfies: SOC i ≥k 4 *SOC ave , where k 4 is the charge cut-off SOC coefficient, k 1 ﹤k 4 ﹤1; if SOC 1 is not satisfied, continue charging ; If satisfied, the i-th battery management system BMS i sends a stop charging request signal to the energy storage monitoring and energy management system EMS, and the energy storage monitoring and energy management system EMS sends a stop charging signal to the i-th energy storage converter PCS i . The control command controls the i-th energy storage converter PCS i to stop the charging operation for the i-th energy storage compartment, and returns to step (1).
以BMS
1为例，结合图3阐述具体控制方法流程如下：
Taking BMS 1 as an example, the specific control method flow is described in conjunction with Fig. 3 as follows:
步骤1：BMS
1通过通信网络8获取BMS
2至BMS
n的SOC数据SOC
1至SOC
n；
Step 1: the BMS 1 obtains the SOC data SOC 1 to SOC n of the BMS 2 to BMS n through the communication network 8;
步骤2：BMS
1判断储能舱1当前状态，如果为静置状态(即PCS1没有进行充放电)，则进入步骤3，否则返回步骤1；
Step 2: The BMS 1 judges the current state of the energy storage compartment 1. If it is in a stationary state (that is, the PCS1 has not been charged and discharged), it will go to step 3, otherwise it will return to step 1;
步骤3：BMS
1计算出所有储能舱的SOC平均值SOC
ave；
Step 3: BMS 1 calculates the SOC average SOC ave of all energy storage compartments;
步骤4：BMS
1判断自身SOC
1是否满足条件1：k
1*SOC
ave≤SOC
1≤k
2*SOC
ave，其中k
1、k
2为SOC系数，k
1小于1，k
2大于1；如果SOC
1满足条件1，则返回步骤3；如果SOC
1不满足条件1，则进一步判断，如果SOC
1﹥k
2*SOC
ave，则转向步骤5，如果SOC
1﹤k
1*SOC
ave，则转向步骤7；
Step 4: BMS 1 judges whether its own SOC 1 satisfies condition 1: k 1 *SOC ave ≤SOC 1 ≤k 2 *SOC ave , where k 1 and k 2 are SOC coefficients, k 1 is less than 1, and k 2 is greater than 1; if If SOC 1 satisfies condition 1, go back to step 3; if SOC 1 does not satisfy condition 1, then further judge, if SOC 1 ﹥k 2 *SOC ave , go to step 5, if SOC 1 ﹤k 1 *SOC ave , go to step 5 step 7;
步骤5：BMS
1向EMS发出放电请求信号，EMS向PCS
1发出放电控制命令，控制PCS
1对储能舱1进行放电操作；
Step 5: The BMS 1 sends a discharge request signal to the EMS, and the EMS sends a discharge control command to the PCS 1 to control the PCS 1 to discharge the energy storage compartment 1;
步骤6：BMS
1计算自身SOC
1是否满足条件2：SOC
1≦k
3*SOC
ave，其中k
3为SOC系数，1﹤k
3﹤k
2；如果SOC
1不满足条件2，则继续放电，如果SOC
1满足条件2，则BMS
1向EMS发出停止放电请求信号，EMS向PCS
1发出停止放电控 制命令，控制PCS
1对储能舱1停止放电操作，转向步骤1。
Step 6: BMS 1 calculates whether its own SOC 1 satisfies condition 2: SOC 1 ≦k 3 *SOC ave , where k 3 is the SOC coefficient, 1﹤k 3 ﹤k 2 ; if SOC 1 does not satisfy condition 2, continue to discharge, If the SOC 1 satisfies the condition 2, the BMS 1 sends a stop discharge request signal to the EMS, and the EMS sends a stop discharge control command to the PCS 1 to control the PCS 1 to stop the discharge operation of the energy storage compartment 1, and turn to step 1.
步骤7：BMS
1向EMS发出充电请求信号，EMS向PCS
1发出充电控制命令，控制PCS
1对储能舱1进行充电操作；BMS
1计算自身SOC
1是否满足条件3：SOC
1≧k
4*SOC
ave，其中k
4为SOC系数，k
1﹤k
4﹤1；
Step 7: The BMS 1 sends a charging request signal to the EMS, and the EMS sends a charging control command to the PCS 1 to control the PCS 1 to charge the energy storage compartment 1; the BMS 1 calculates whether its own SOC 1 satisfies the condition 3: SOC 1 ≧k 4 * SOC ave , where k 4 is the SOC coefficient, k 1 ﹤k 4 ﹤1;
如果SOC
1不满足条件3，则继续充电，如果SOC
1满足条件3，则BMS
1向EMS发出停止充电请求信号，EMS向PCS
1发出停止充电控制命令，控制PCS
1对储能舱1停止充电操作，转向步骤1。
If SOC 1 does not meet condition 3, continue charging, if SOC 1 meets condition 3, BMS 1 sends a stop charging request signal to EMS, EMS sends a stop charging control command to PCS 1 , and controls PCS 1 to stop charging energy storage compartment 1 operation, go to step 1.
控制流程图见图3，BMS
2至BMS
n的控制方法和BMS
1控制方法相同。
The control flow chart is shown in Figure 3. The control method of BMS 2 to BMS n is the same as that of BMS 1 .
综上所述，本发明涉及一种电化学储能电站BMS协同控制***及方法，为各储能舱的BMS设置通讯网络，不同储能舱的BMS进行互联互通，实现各储能舱电池SOC共享，每个储能舱的BMS可以获取其它所有舱内BMS的电池SOC等数据。各储能舱的BMS综合自身SOC和其它舱的SOC，判断所在舱的电池是否需要充放电来使自身SOC与其它舱的SOC保持相同水平，舱间SOC均衡有利于储能电站整体高效运行。通过全息数据分析进而与EMS、PCS双向互动，实现整站BMS协同控制。In summary, the present invention relates to a BMS collaborative control system and method for an electrochemical energy storage power station. A communication network is set up for the BMS of each energy storage compartment, and the BMSs of different energy storage compartments are interconnected to realize the battery SOC of each energy storage compartment. Sharing, the BMS of each energy storage cabin can obtain the battery SOC and other data of the BMS in all other cabins. The BMS of each energy storage cabin integrates its own SOC and the SOC of other cabins, and determines whether the battery in the cabin needs to be charged and discharged to keep its own SOC and the SOC of other cabins at the same level. The SOC balance between cabins is conducive to the overall efficient operation of the energy storage power station. Through holographic data analysis, it interacts with EMS and PCS in two directions to realize the coordinated control of the entire station BMS.
本领域内的技术人员应明白，本申请的实施例可提供为方法、***、或计算机程序产品。因此，本申请可采用完全硬件实施例、完全软件实施例、或结合软件和硬件方面的实施例的形式。而且，本申请可采用在一个或多个其中包含有计算机可用程序代码的计算机可用存储介质(包括但不限于磁盘存储器、CD-ROM、光学存储器等)上实施的计算机程序产品的形式。As will be appreciated by those skilled in the art, the embodiments of the present application may be provided as a method, a system, or a computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) having computer-usable program code embodied therein.
本申请是参照根据本申请实施例的方法、设备(***)、和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机程序指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其它可编程数据处理设备的处理器以产生一个机器，使得通过计算机或其它可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的 装置。The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the present application. It will be understood that each process and/or block in the flowchart illustrations and/or block diagrams, and combinations of processes and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to the processor of a general purpose computer, special purpose computer, embedded processor or other programmable data processing device to produce a machine such that the instructions executed by the processor of the computer or other programmable data processing device produce Means for implementing the functions specified in a flow or flow of a flowchart and/or a block or blocks of a block diagram.
这些计算机程序指令也可存储在能引导计算机或其它可编程数据处理设备以特定方式工作的计算机可读存储器中，使得存储在该计算机可读存储器中的指令产生包括指令装置的制造品，该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory result in an article of manufacture comprising instruction means, the instructions The apparatus implements the functions specified in the flow or flow of the flowcharts and/or the block or blocks of the block diagrams.
这些计算机程序指令也可装载到计算机或其它可编程数据处理设备上，使得在计算机或其它可编程设备上执行一系列操作步骤以产生计算机实现的处理，从而在计算机或其它可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。These computer program instructions can also be loaded on a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer-implemented process such that The instructions provide steps for implementing the functions specified in the flow or blocks of the flowcharts and/or the block or blocks of the block diagrams.
最后应当说明的是：以上实施例仅用以说明本发明的技术方案而非对其限制，尽管参照上述实施例对本发明进行了详细的说明，所属领域的普通技术人员应当理解：依然可以对本发明的具体实施方式进行修改或者等同替换，而未脱离本发明精神和范围的任何修改或者等同替换，其均应涵盖在本发明的权利要求保护范围之内。Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that: the present invention can still be Modifications or equivalent replacements are made to the specific embodiments of the present invention, and any modifications or equivalent replacements that do not depart from the spirit and scope of the present invention shall be included within the protection scope of the claims of the present invention.
Claims (10)
- 一种电化学储能电站BMS协同控制***，其特征在于，包括若干电池管理***BMS、储能变流器PCS以及储能监控与能量管理***EMS；A BMS collaborative control system for an electrochemical energy storage power station, characterized in that it includes several battery management systems BMS, an energy storage converter PCS, and an energy storage monitoring and energy management system EMS;每个所述电池管理***BMS，用于采集所在储能舱的电池荷电状态SOC数据，并获取其它储能舱的电池荷电状态SOC数据，在确定出需要充放电来使自身电池荷电状态SOC与其它舱的电池荷电状态SOC保持相同水平时，向储能监控与能量管理***EMS发送充放电请求；Each of the battery management system BMS is used to collect the battery state of charge SOC data of the energy storage compartment where it is located, and obtain the battery state of charge SOC data of other energy storage compartments. When the state SOC remains the same as the battery state of charge SOC of other cabins, it sends a charge and discharge request to the energy storage monitoring and energy management system EMS;所述能量管理***EMS，用于在接收到充放电请求时，控制对应储能变流器PCS对储能舱进行充放电。The energy management system EMS is used to control the corresponding energy storage converter PCS to charge and discharge the energy storage compartment when a charge and discharge request is received.
- 根据权利要求1所述的电化学储能电站BMS协同控制***，其特征在于，还包括：通信网络，用于所述电池管理***BMS与储能变流器PCS之间、储能变流器PCS与能量管理***EMS之间、电池管理***BMS与EMS之间的数据交互。The BMS collaborative control system for an electrochemical energy storage power station according to claim 1, further comprising: a communication network, used between the battery management system BMS and the energy storage converter PCS, and the energy storage converter Data interaction between PCS and energy management system EMS, and between battery management system BMS and EMS.
- 根据权利要求2所述的电化学储能电站BMS协同控制***，其特征在于，The BMS collaborative control system for an electrochemical energy storage power station according to claim 2, characterized in that:所述电池管理***BMS包括采集单元、通讯单元、存储单元、计算单元和比较单元；The battery management system BMS includes a collection unit, a communication unit, a storage unit, a calculation unit and a comparison unit;采集单元，用于采集所在储能舱的电池荷电状态SOC数据存储至所述存储单元并通过所述通讯单元用于向所述通信网络发送；a collection unit, configured to collect the battery state of charge SOC data of the energy storage compartment where it is located, store it in the storage unit, and send it to the communication network through the communication unit;通讯单元，用于通过所述通信网络读取其它储能舱的电池荷电状态SOC数据并存储至存储单元；a communication unit, configured to read the battery state-of-charge SOC data of other energy storage compartments through the communication network and store it in the storage unit;所述计算单元，用于计算基于所述存储单元存储的所有储能舱的电池荷电状态SOC数据计算均值；the calculation unit, configured to calculate the mean value based on the battery state of charge SOC data of all the energy storage compartments stored by the storage unit;所述比较单元基于所述均值生成充电阈值和放电阈值，将对应采集单元采集的电池荷电状态SOC数据与充电阈值和放电阈值比较，如果高于放电阈值，则输出放电请求信号；如果低于充电阈值，则输出充电请求信号。The comparison unit generates a charging threshold and a discharging threshold based on the average value, compares the battery state of charge SOC data collected by the corresponding acquisition unit with the charging threshold and the discharging threshold, and if it is higher than the discharging threshold, outputs a discharging request signal; If the charging threshold is reached, a charging request signal is output.
- 根据权利要求3所述的电化学储能电站BMS协同控制***，其特 征在于，所述比较单元还包括在放电时计算放电截止阈值，当对应采集单元采集的电池荷电状态SOC数据大于放电截止阈值，继续放电，否则输出停止放电请求信号；The BMS cooperative control system for an electrochemical energy storage power station according to claim 3, wherein the comparison unit further comprises: calculating a discharge cut-off threshold when discharging, and when the battery state of charge SOC data collected by the corresponding collection unit is greater than the discharge cut-off Threshold, continue to discharge, otherwise output stop discharge request signal;所述比较单元还包括在充电时计算充电截止阈值，当对应采集单元采集的电池荷电状态SOC数据小于充电截止阈值，继续充电，否则输出停止充电请求信号。The comparison unit further includes calculating a charging cut-off threshold during charging, and when the battery state of charge SOC data collected by the corresponding acquisition unit is less than the charging cut-off threshold, continue charging, otherwise output a stop charging request signal.
- 根据权利要求4所述的电化学储能电站BMS协同控制***，其特征在于，所述放电截止阈值小于所述放电阈值；所述充电截止阈值大于所述充电阈值。The BMS cooperative control system for an electrochemical energy storage power station according to claim 4, wherein the discharge cut-off threshold is smaller than the discharge threshold; and the charge cut-off threshold is greater than the charge threshold.
- 一种电化学储能电站BMS协同控制方法，其特征在于，包括以下步骤：A BMS collaborative control method for an electrochemical energy storage power station, comprising the following steps:(1)第i个电池管理***BMS i采集所在储能舱的电池荷电状态SOC数据，获取其它电池管理***电池荷电状态SOC数据； (1) The i-th battery management system BMS i collects the battery state of charge SOC data of the energy storage compartment where it is located, and obtains the battery state of charge SOC data of other battery management systems;(2)第i个电池管理***BMS i判断第i个储能舱当前状态；在确定出需要充放电来使自身电池荷电状态SOC与其它舱的电池荷电状态SOC保持相同水平时，发送充放电请求； (2) The i-th battery management system BMS i judges the current state of the i-th energy storage compartment; when it is determined that charging and discharging are required to keep its own battery state of charge SOC and the battery state of charge SOC of other compartments at the same level, send charge and discharge request;(3)能量管理***EMS，接收到充放电请求时，控制对应储能变流器PCS对储能舱进行充放电。(3) The energy management system EMS, when receiving a charge and discharge request, controls the corresponding energy storage converter PCS to charge and discharge the energy storage compartment.
- 根据权利要求6所述的电化学储能电站BMS协同控制方法，其特征在于，第i个电池管理***BMS i放电时计算放电截止阈值，当对应采集单元采集的电池荷电状态SOC数据大于放电截止阈值，继续放电，否则输出停止放电请求信号； The BMS collaborative control method for an electrochemical energy storage power station according to claim 6, wherein the discharge cut-off threshold is calculated when the i-th battery management system BMS i is discharged, and the battery state of charge SOC data collected by the corresponding collection unit is greater than the discharge threshold. Cut off the threshold, continue to discharge, otherwise output stop discharge request signal;第i个电池管理***BMS i在充电时计算充电截止阈值，当对应采集单元采集的电池荷电状态SOC数据小于充电截止阈值，继续充电，否则输出停止充电请求信号。 The i-th battery management system BMS i calculates the charging cut-off threshold during charging. When the battery state of charge SOC data collected by the corresponding acquisition unit is less than the charging cut-off threshold, it continues to charge, otherwise it outputs a stop charging request signal.
- 根据权利要求7所述的电化学储能电站BMS协同控制方法，其特征在于，所述放电截止阈值小于所述放电阈值；所述充电截止阈值大于所述 充电阈值。The BMS collaborative control method for an electrochemical energy storage power station according to claim 7, wherein the discharge cut-off threshold is less than the discharge threshold; the charge cut-off threshold is greater than the charge threshold.
- 根据权利要求8所述的电化学储能电站BMS协同控制方法，其特征在于，每个所述电池管理***BMS采集所在储能舱的电池荷电状态SOC数据并通过通信网络发送，通过通信网络获取其它储能舱的电池荷电状态SOC数据。The BMS collaborative control method for an electrochemical energy storage power station according to claim 8, wherein the battery management system BMS collects the battery state of charge (SOC) data of the energy storage compartment where it is located and sends it through a communication network. Obtain the battery state of charge SOC data of other energy storage compartments.
- 一种电化学储能电站BMS协同控制方法，其特征在于，包括以下步骤：A BMS collaborative control method for an electrochemical energy storage power station, comprising the following steps:(1)第i个电池管理***BMS i获取其它电池管理***电池荷电状态SOC数据； (1) The i-th battery management system BMS i obtains the battery state of charge SOC data of other battery management systems;(2)第i个电池管理***BMS i判断第i个储能舱当前状态；如果是静置状态则进入步骤(3)，否则返回步骤(1)； (2) The i-th battery management system BMS i judges the current state of the i-th energy storage compartment; if it is in a stationary state, go to step (3), otherwise return to step (1);(3)第i个电池管理***BMS i计算出所有储能舱的电池荷电状态平均值SOC ave； (3) The i-th battery management system BMS i calculates the battery state-of-charge average value SOC ave of all energy storage compartments;(4)第i个电池管理***BMS i判断自身电池荷电状态SOC i是否满足：k 1*SOC ave≤SOC i≤k 2*SOC ave，其中k 1、k 2分别为充电、放电阈值系数，k 1小于1，k 2大于1；如果满足则返回步骤(3)；否则，如果SOC i﹥k 2*SOC ave，则进入步骤(5)，如果SOC i﹤k 1*SOC ave，则进入步骤(7)； (4) The i-th battery management system BMS i judges whether its own battery state of charge SOC i satisfies: k 1 *SOC ave ≤SOC i ≤k 2 *SOC ave , where k 1 and k 2 are charging and discharging threshold coefficients respectively , k 1 is less than 1, and k 2 is greater than 1; if it is satisfied, go back to step (3); otherwise, if SOC i ﹥k 2 *SOC ave , then go to step (5), if SOC i ﹤k 1 *SOC ave , then Enter step (7);(5)第i个电池管理***BMS i向储能监控与能量管理***EMS发出放电请求信号，储能监控与能量管理***EMS向第i个储能变流器PCS i发出放电控制命令，控制第i个储能变流器PCS i对第i个储能舱进行放电操作； (5) The i-th battery management system BMS i sends a discharge request signal to the energy storage monitoring and energy management system EMS, and the energy storage monitoring and energy management system EMS sends a discharge control command to the i-th energy storage converter PCS i to control the The i-th energy storage converter PCS i discharges the i-th energy storage tank;(6)第i个电池管理***BMS i计算是否满足：SOC i≤k 3*SOC ave，其中k 3为放电截止系数，1﹤k 3﹤k 2；如果不满足则继续放电，如果满足，则第i个电池管理***BMS i向储能监控与能量管理***EMS发出停止放电请求信号，储能监控与能量管理***EMS向第i个储能变流器PCS i发出停止放电控制命令，停止对第i个储能舱1的放电操作，并返回步骤(1)； (6) Whether the calculation of the i-th battery management system BMS i satisfies: SOC i ≤k 3 *SOC ave , where k 3 is the discharge cut-off coefficient, 1﹤k 3 ﹤k 2 ; if it is not satisfied, continue to discharge, if it is satisfied, Then the i-th battery management system BMS i sends a stop discharge request signal to the energy storage monitoring and energy management system EMS, and the energy storage monitoring and energy management system EMS sends a stop discharge control command to the i-th energy storage converter PCS i to stop the discharge. Discharge operation on the i-th energy storage compartment 1, and return to step (1);(7)第i个电池管理***BMS i向储能监控与能量管理***EMS发出 充电请求信号，储能监控与能量管理***EMS向第i个储能变流器PCS i发出充电控制命令，控制第i个储能变流器PCS i对第i个储能舱进行充电操作； (7) The i-th battery management system BMS i sends a charging request signal to the energy storage monitoring and energy management system EMS, and the energy storage monitoring and energy management system EMS sends a charging control command to the i-th energy storage converter PCS i to control the The i-th energy storage converter PCS i charges the i-th energy storage compartment;(8)第i个电池管理***BMS i计算是否满足：SOC i≥k 4*SOC ave，其中k 4为充电截止SOC系数，k 1﹤k 4﹤1；如果SOC 1不满足，则继续充电；如果满足，则第i个电池管理***BMS i向储能监控与能量管理***EMS发出停止充电请求信号，储能监控与能量管理***EMS向第i个储能变流器PCS i发出停止充电控制命令，控制第i个储能变流器PCS i对第i个储能舱停止充电操作，并返回步骤(1)。 (8) Whether the calculation of the i-th battery management system BMS i satisfies: SOC i ≥k 4 *SOC ave , where k 4 is the charge cut-off SOC coefficient, k 1 ﹤k 4 ﹤1; if SOC 1 is not satisfied, continue charging ; If satisfied, the i-th battery management system BMS i sends a stop charging request signal to the energy storage monitoring and energy management system EMS, and the energy storage monitoring and energy management system EMS sends a stop charging signal to the i-th energy storage converter PCS i . The control command controls the i-th energy storage converter PCS i to stop the charging operation for the i-th energy storage compartment, and returns to step (1).
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| CN115566709B (en) * | 2022-09-13 | 2024-05-03 | 中国电力科学研究院有限公司 | Energy storage converter single-machine energy on-site control method and device |
| CN116027206A (en) * | 2023-03-29 | 2023-04-28 | 安徽中科中涣智能装备股份有限公司 | Multi-element perception grading early warning intelligent monitoring system based on station-level energy storage |
| CN117353598A (en) * | 2023-12-06 | 2024-01-05 | 上海百竹成航新能源有限责任公司 | Energy storage converter and energy storage system |
| CN117353598B (en) * | 2023-12-06 | 2024-02-27 | 上海百竹成航新能源有限责任公司 | Energy storage converter and energy storage system |
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| CN112531828A (en) | 2021-03-19 |
| CN112531828B (en) | 2023-02-10 |
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