一种辅助同步发电机组的储能柔性控制策略  

A Flexible Control Strategy for Energy Storage Assisting Synchronous Generators

作　　者：王达 赵影 倪佳华 凌永辉 项基[3] 郑婷婷 WANG Da;ZHAO Ying;NI Jiahua;LING Yonghui;XIANG Ji;ZHENG Tingting(Electric Power Research Institute,State Grid East Inner Mongolia Electric Power Co.,Ltd.,Hohhot 010010,China;Ploytechnic Institute,Zhejiang University,Hangzhou 310015,China;College of Electrical Engineering,Zhejiang University,Hangzhou 310027,China)

机构地区：[1]国网内蒙古东部电力有限公司电力科学研究院,呼和浩特市010010 [2]浙江大学工程师学院,杭州市310015 [3]浙江大学电气工程学院,杭州市310027

出　　处：《电力建设》2022年第6期101-109,共9页Electric Power Construction

基　　金：国网内蒙古东部电力公司科技项目(526604210005);国家自然科学基金(62173295)。

摘　　要：针对新能源大规模渗透下的系统惯量减少和电压调节恶化问题,提出一种储能辅助同步发电机组的柔性控制策略。将储能配置在同步发电机组的输出母线处,储能通过同步发电机组运行数据的反馈进行柔性控制,配合同步发电机组进行功率输出,二者有机结合形成新的发电单元——柔性同步机组,其等效惯量、内阻抗和阻尼可变。在所提控制策略下,储能工作在易于实现的电流源模式,可增加柔性同步机组的惯量和阻尼,改善电压动态并在稳态时提供针对性的无功支撑。仿真结果验证了所提策略的有效性。Aiming at the problems of the inertia reduction and reactive power regulation deterioration under the large-scale penetration of renewable energy,a flexible control strategy for energy storage assisting synchronous generators is proposed.Meanwhile,the energy storage is configured at the terminal bus of the synchronous generator,and these two measures form a unified power source:a flexible generator whose equivalent inertia,internal impedance,and damping are changeable.Under the proposed control strategy,the energy storage works in the easy-to-implement current source mode,increasing the inertia and damping of the flexible generator,improving the voltage dynamics,and providing targeted reactive power support in the steady-state.Simulation results verify the effectiveness of the proposed strategy.

关 键 词：储能控制 惯量增强 电压动态 无功支撑 

分 类 号：TM712[电气工程—电力系统及自动化]