电力系统保护与控制
電力繫統保護與控製
전력계통보호여공제
POWER SYSTM PROTECTION AND CONTROL
2014年
22期
75-80
,共6页
艾洪克%吴俊勇%田明杰%郝亮亮%张巨瑞%张皎
艾洪剋%吳俊勇%田明傑%郝亮亮%張巨瑞%張皎
애홍극%오준용%전명걸%학량량%장거서%장교
组合级联式储能系统%两级SOC均衡%零序电压%SOC反馈
組閤級聯式儲能繫統%兩級SOC均衡%零序電壓%SOC反饋
조합급련식저능계통%량급SOC균형%령서전압%SOC반궤
hybrid cascade energy storage system%two-stage SOC self-balancing%zero-sequence voltage%SOC feedback
大容量链式电池储能系统是解决光伏发电等可再生能源发电大规模并网问题的有效手段之一。针对所提出的星形组合级联式大容量电池储能系统中存在的电池SOC不均衡问题，通过注入零序电压实现三相相间SOC均衡控制，并通过在各级联单元叠加以SOC为反馈量的调制波分量实现各相内不同级联单元之间的SOC均衡控制。在PSCAD/EMTDC仿真环境中搭建了系统模型，仿真结果表明所提出的两级SOC均衡控制策略能够有效地实现电池SOC自均衡，验证了该控制策略的正确性和可行性。
大容量鏈式電池儲能繫統是解決光伏髮電等可再生能源髮電大規模併網問題的有效手段之一。針對所提齣的星形組閤級聯式大容量電池儲能繫統中存在的電池SOC不均衡問題，通過註入零序電壓實現三相相間SOC均衡控製，併通過在各級聯單元疊加以SOC為反饋量的調製波分量實現各相內不同級聯單元之間的SOC均衡控製。在PSCAD/EMTDC倣真環境中搭建瞭繫統模型，倣真結果錶明所提齣的兩級SOC均衡控製策略能夠有效地實現電池SOC自均衡，驗證瞭該控製策略的正確性和可行性。
대용량련식전지저능계통시해결광복발전등가재생능원발전대규모병망문제적유효수단지일。침대소제출적성형조합급련식대용량전지저능계통중존재적전지SOC불균형문제，통과주입령서전압실현삼상상간SOC균형공제，병통과재각급련단원첩가이SOC위반궤량적조제파분량실현각상내불동급련단원지간적SOC균형공제。재PSCAD/EMTDC방진배경중탑건료계통모형，방진결과표명소제출적량급SOC균형공제책략능구유효지실현전지SOC자균형，험증료해공제책략적정학성화가행성。
Large capacity battery energy storage system is one of the effective means to solve the photovoltaic and other renewable energy power station grid-connected issues. In view of the problems of SOC imbalance in the proposed star hybrid cascade energy storage system, the balancing control of SOC among clusters, namely the bridge arms of each phase in this system, is implemented by means of injecting zero-sequence voltage. And the SOC balance of units within the cluster is realized through adding corresponding modulation wave with SOC as feedback components. Its reasonableness and feasibility are verified by an example of hybrid cascade energy storage system established in PSCAD/EMTDC.
