技术领域technical field
本发明涉及一种储能电站，尤其涉及一种电网侧的电化学储能电站，属于储能设备技术领域。The invention relates to an energy storage power station, in particular to an electrochemical energy storage power station on the grid side, and belongs to the technical field of energy storage equipment.
背景技术Background technique
储能电站作为能源服务新产品，是优质、可靠的毫秒级控制响应资源，可提供有功、无功的双重支撑，为电网提供调峰、调频、备用、事故应急响应等多种服务。为缓解地区夏季高峰期间供电压力和提高区域电网可再生能源就地消纳水平、削峰填谷能力、局部电网供电能力和电网灵活调节能力，结合电化学储能电站建设周期短、布点灵活的优势，可以规划实施电网侧储能电站项目。电网侧储能电站主要由电池舱、PCS升压舱、10kV汇流舱、智能总控舱、SVG舱和站用变舱组成。As a new energy service product, energy storage power station is a high-quality and reliable millisecond-level control response resource, which can provide dual support for active and reactive power, and provide various services for the power grid such as peak regulation, frequency regulation, backup, and emergency response to accidents. In order to alleviate the power supply pressure during the summer peak period in the region and improve the local consumption level of renewable energy in the regional power grid, the ability to cut peaks and fill valleys, the power supply capacity of the local power grid, and the flexible adjustment capacity of the power grid, combined with the short construction period and flexible layout of electrochemical energy storage power stations Advantages, it is possible to plan and implement grid-side energy storage power station projects. The grid-side energy storage power station is mainly composed of battery compartment, PCS booster compartment, 10kV confluence compartment, intelligent master control compartment, SVG compartment and station transformation compartment.
发明内容Contents of the invention
本发明的目的在于提供一种储能电站，提高储能电站规划和建设效率和效益，缓解地区夏季高峰期间供电压力和提高地区电网可再生能源就地消纳水平、削峰填谷能力、局部电网供电能力和电网灵活调节能力。The purpose of the present invention is to provide an energy storage power station, improve the planning and construction efficiency and benefits of the energy storage power station, alleviate the power supply pressure during the summer peak period in the region, and improve the local consumption level of renewable energy in the regional power grid, the ability to cut peaks and fill valleys, and local Grid power supply capability and grid flexible adjustment capability.
本发明的目的通过以下技术方案予以实现：The purpose of the present invention is achieved through the following technical solutions:
一种储能电站包括10kV汇流舱1、SVG舱10、站用变舱11、PCS升压舱12、储能电池舱13；所述10kV汇流舱1包括出线柜2、计量柜3、母线压变柜4、SVG进线柜5、站用变进线柜6、第一储能电池进线柜7、第二储能电池进线柜8，所述SVG舱10与SVG进线柜5相连，所述站用变舱11与站用变进线柜6相连，所述PCS升压舱12与储能电池舱13一一对应，储能电池舱13包括电池管理系统和磷酸铁锂电池组，电池管理系统对磷酸铁锂电池组进行控制，所述磷酸铁锂电池组以磷酸铁锂电芯14为系统配置基本单元，由48个磷酸铁锂电芯14按8个并联为一组后再进行6组串联的方式组成一个U箱，将38个U箱按照串联方式集成在具有散热功能的铁架内，组成一个标准电池簇，再由10个标准电池簇并联组成磷酸铁锂电池组；PCS升压舱12包括2台500kW的PCS变流器16和1台1250kVA的升压变压器15，所述PCS变流器16的直流端与储能电池舱13的磷酸铁锂电池组相连，PCS变流器16的交流端与升压变压器15原边相连；将4座PCS升压舱12的升压变压器15副边相互连接后与一个第一储能电池进线柜7或第二储能电池进线柜8的进线相连。An energy storage power station includes a 10kV confluence cabin 1, an SVG cabin 10, a station transformer cabin 11, a PCS booster cabin 12, and an energy storage battery cabin 13; the 10kV confluence cabin 1 includes an outlet cabinet 2, a metering cabinet 3, a bus pressure Transformer cabinet 4, SVG incoming cabinet 5, station transformer incoming cabinet 6, first energy storage battery incoming cabinet 7, second energy storage battery incoming cabinet 8, the SVG cabin 10 is connected to the SVG incoming cabinet 5 , the station change cabin 11 is connected to the station change inlet cabinet 6, the PCS booster cabin 12 corresponds to the energy storage battery cabin 13, and the energy storage battery cabin 13 includes a battery management system and a lithium iron phosphate battery pack , the battery management system controls the lithium iron phosphate battery pack, the lithium iron phosphate battery pack uses the lithium iron phosphate battery cell 14 as the basic unit of the system configuration, and the 48 lithium iron phosphate battery cells 14 are connected in parallel as a group of 8 before proceeding. 6 sets of U-boxes are connected in series to form a U-box, and 38 U-boxes are integrated in series in an iron frame with heat dissipation function to form a standard battery cluster, and then 10 standard battery clusters are connected in parallel to form a lithium iron phosphate battery pack; PCS The booster cabin 12 includes two 500kW PCS converters 16 and one 1250kVA booster transformer 15. The DC end of the PCS converter 16 is connected to the lithium iron phosphate battery pack of the energy storage battery cabin 13, and the PCS transformer The AC end of the converter 16 is connected to the primary side of the step-up transformer 15; the secondary sides of the step-up transformer 15 of the four PCS step-up cabins 12 are connected to each other and then connected to a first energy storage battery inlet cabinet 7 or a second energy storage battery The incoming lines of the incoming line cabinet 8 are connected.
本发明的目的还可以通过以下技术措施来进一步实现：The object of the present invention can also be further realized by the following technical measures:
前述一种储能电站，其中磷酸铁锂电芯14规格为3.2V/40Ah，U箱的规格为20V/320Ah，标准电池簇的规格为760V/320Ah，磷酸铁锂电池组输出容量为1MW/2MWh。The aforementioned energy storage power station, in which the lithium iron phosphate battery cell 14 has a specification of 3.2V/40Ah, the specification of the U box is 20V/320Ah, the specification of the standard battery cluster is 760V/320Ah, and the output capacity of the lithium iron phosphate battery pack is 1MW/2MWh .
前述一种储能电站，其中涉及多段10kV汇流母线的，增设母线分段柜9后进行多段布置。For the aforementioned energy storage power station, which involves multi-section 10kV confluence busbars, multi-section layout is carried out after adding bus section cabinets 9 .
与现有技术相比，本发明的有益效果是：Compared with prior art, the beneficial effect of the present invention is:
1、采用标准预制舱体布置形式，实现设计方案模块化、设备基础通用化、施工建设标准化，舱内接线及单体设备调试最大程度实现出厂前完成，有效减少现场安装、接线、调试工作，大大缩短建设周期。1. The standard prefabricated cabin layout is adopted to realize the modularization of the design scheme, the universalization of the equipment foundation, and the standardization of construction. The wiring in the cabin and the debugging of the single equipment can be completed before leaving the factory to the greatest extent, effectively reducing the work of on-site installation, wiring, and debugging. Greatly shorten the construction period.
2、预制舱各模块的占地面积固定，可根据选址灵活安排各舱的位置；也可根据储能电站的容量需求计算出需要的模块数量，从而估算出大致的需求占地面积，从而方便于选址工作的开展。2. The footprint of each module in the prefabricated cabin is fixed, and the location of each cabin can be flexibly arranged according to the site selection; the required number of modules can also be calculated according to the capacity demand of the energy storage power station, thereby estimating the approximate required footprint, so that It is convenient for the development of site selection work.
3、储能电池舱模块采用磷酸铁锂电池等锂电池作为储能介质，它具有安全可靠性强、能量密度高、充放电速率快、使用寿命长的优点。3. The energy storage battery compartment module uses lithium batteries such as lithium iron phosphate batteries as the energy storage medium, which has the advantages of strong safety and reliability, high energy density, fast charge and discharge rate, and long service life.
4、将储能电池进线柜与PCS升压舱一一对应的型式优化为“一拖四”，将4座PCS升压舱相互连接后接入一面进线柜，大幅降低设备成本，有效减少占地面积。4. The type of one-to-one correspondence between the energy storage battery inlet cabinet and the PCS booster cabin is optimized as "one to four", and the 4 PCS booster cabins are connected to each other and then connected to one inlet cabinet, which greatly reduces equipment costs and effectively Reduce floor space.
附图说明Description of drawings
图1是储能电站的系统图；Figure 1 is a system diagram of an energy storage power station;
图2为储能电池舱模块结构图；Figure 2 is a structural diagram of the energy storage battery compartment module;
图3为PCS升压舱模块结构图。Figure 3 is a structural diagram of the PCS pressurization cabin module.
具体实施方式Detailed ways
下面结合附图和具体实施例对本发明作进一步说明。The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.
如图1所示，本发明储能电站包括10kV汇流舱1、SVG舱10、站用变舱11、PCS升压舱12、储能电池舱13；所述10kV汇流舱1包括出线柜2、计量柜3、母线压变柜4、SVG进线柜5、站用变进线柜6、第一储能电池进线柜7、第二储能电池进线柜8，所述SVG舱10与SVG进线柜5相连，所述站用变舱11与站用变进线柜6相连，所述PCS升压舱12与储能电池舱13一一对应，储能电池舱13包括电池管理系统和磷酸铁锂电池组，电池管理系统对磷酸铁锂电池组进行控制，所述磷酸铁锂电池组以磷酸铁锂电芯14为系统配置基本单元，由48个磷酸铁锂电芯14按8个并联为一组后再进行6组串联的方式组成一个U箱，将38个U箱按照串联方式集成在具有散热功能的铁架内，组成一个标准电池簇，再由10个标准电池簇并联组成磷酸铁锂电池组；PCS升压舱12包括2台500kW的PCS变流器16和1台1250kVA的升压变压器15，所述PCS变流器16的直流端与储能电池舱13的磷酸铁锂电池组相连，PCS变流器16的交流端与升压变压器15原边相连；将4座PCS升压舱12的升压变压器15副边相互连接后与一个第一储能电池进线柜7或第二储能电池进线柜8的进线相连。As shown in Figure 1, the energy storage power station of the present invention includes a 10kV confluence cabin 1, an SVG cabin 10, a station change cabin 11, a PCS booster cabin 12, and an energy storage battery cabin 13; the 10kV confluence cabin 1 includes an outlet cabinet 2, Metering cabinet 3, bus pressure transformer cabinet 4, SVG incoming cabinet 5, station transformer incoming cabinet 6, first energy storage battery incoming cabinet 7, second energy storage battery incoming cabinet 8, the SVG cabin 10 and The SVG incoming line cabinet 5 is connected, the station change cabin 11 is connected with the station variable incoming line cabinet 6, and the PCS booster cabin 12 is in one-to-one correspondence with the energy storage battery cabin 13, and the energy storage battery cabin 13 includes a battery management system and the lithium iron phosphate battery pack, the battery management system controls the lithium iron phosphate battery pack, the lithium iron phosphate battery pack uses the lithium iron phosphate battery cell 14 as the basic unit of the system configuration, and consists of 48 lithium iron phosphate battery cells 14 connected in parallel in eight A U-box is formed by connecting 6 groups in series for one group, and 38 U-boxes are integrated in series in an iron frame with heat dissipation function to form a standard battery cluster, and then 10 standard battery clusters are connected in parallel to form a phosphoric acid battery. Lithium iron battery pack; PCS booster compartment 12 includes two 500kW PCS converters 16 and one 1250kVA step-up transformer 15, the DC end of the PCS converter 16 is connected to the lithium iron phosphate of the energy storage battery compartment 13 The battery pack is connected, and the AC end of the PCS converter 16 is connected to the primary side of the step-up transformer 15; the secondary sides of the step-up transformer 15 of the four PCS step-up cabins 12 are connected to each other and connected to a first energy storage battery inlet cabinet 7 Or the incoming line of the second energy storage battery incoming cabinet 8 is connected.
储能电池舱13由电池管理系统(BMS)和磷酸铁锂电池组成。每座储能电池舱13系统输出容量为2MWh。储能电池系统以磷酸铁锂电芯14(3.2V/40Ah)为基本单元进行系统配置。每个U箱(20V/320Ah)由48个电芯按8并6串方式成组。将38个U箱按照串联方式集成在具有散热功能的铁架内，组成一个标准电池簇(760V/320Ah)。再由10个标准电池簇并联组成一个输出容量为1MW/2MWh储能电池单元。The energy storage battery compartment 13 is composed of a battery management system (BMS) and a lithium iron phosphate battery. The system output capacity of each energy storage battery cabin 13 is 2MWh. The energy storage battery system is configured with a lithium iron phosphate battery cell 14 (3.2V/40Ah) as the basic unit. Each U box (20V/320Ah) is composed of 48 cells in 8 parallel and 6 strings. 38 U-boxes are integrated in series in an iron frame with heat dissipation function to form a standard battery cluster (760V/320Ah). Then 10 standard battery clusters are connected in parallel to form an energy storage battery unit with an output capacity of 1MW/2MWh.
PCS变流器实现DC/AC转换，将直流760V转化为交流315V，然后由升压变压器升压至10kV并分别接入10kV汇流母线。10kV汇流舱含2面储能电池进线柜，1面SVG进线柜，1面母线压变柜，1面计量柜，1面出线柜及相关附属设备。每4座储能电池舱与PCS升压舱并联接入10kV汇流舱中的1面储能电池进线柜。10kV汇流母线通过10kV汇流舱中的1面出线柜将新建10kV线路接入对侧110kV变电站10kV开关柜。The PCS converter realizes DC/AC conversion, converts DC 760V to AC 315V, and then boosts the voltage to 10kV by a step-up transformer and connects them to 10kV busbars respectively. The 10kV confluence cabin includes 2 energy storage battery incoming cabinets, 1 SVG incoming cabinet, 1 bus voltage transformer cabinet, 1 metering cabinet, 1 outlet cabinet and related auxiliary equipment. Every 4 energy storage battery cabins and PCS booster cabins are connected in parallel to one energy storage battery inlet cabinet in the 10kV confluence cabin. The 10kV confluence bus connects the newly built 10kV line to the 10kV switchgear of the 110kV substation on the opposite side through one outlet cabinet in the 10kV confluence cabin.
涉及多段10kV汇流母线的，按上述结构并增设母线分段柜9后进行多段布置。If multi-section 10kV confluence busbars are involved, multi-section layout shall be carried out after adding bus section cabinet 9 according to the above structure.
可以增设智能总控舱布置站端监控系统(EMS)、智能网荷互动终端、同步相量测量装置(PMU)、防孤岛保护及频率电压紧急控制装置、智能辅助控制系统、故障录波柜、交直流一体化电源及备用屏柜等。It is possible to add an intelligent general control cabin to arrange a station-side monitoring system (EMS), an intelligent network-load interactive terminal, a synchronized phasor measurement unit (PMU), an anti-islanding protection and frequency and voltage emergency control device, an intelligent auxiliary control system, a fault recording cabinet, AC and DC integrated power supply and spare screen cabinet, etc.
除上述实施例外，本发明还可以有其他实施方式，凡采用等同替换或等效变换形成的技术方案，均落在本发明要求的保护范围内。In addition to the above-mentioned embodiments, the present invention can also have other implementations, and all technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of protection required by the present invention.
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910638031.2ACN110350562A (en) | 2019-07-15 | 2019-07-15 | A kind of energy-accumulating power station |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910638031.2ACN110350562A (en) | 2019-07-15 | 2019-07-15 | A kind of energy-accumulating power station |
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| CN110350562Atrue CN110350562A (en) | 2019-10-18 |
| Application Number | Title | Priority Date | Filing Date |
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| CN201910638031.2APendingCN110350562A (en) | 2019-07-15 | 2019-07-15 | A kind of energy-accumulating power station |
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