基于超级电容器控制策略的含风电微电网电压波动的抑制  

An approach to suppress voltage fluctuation in micro-grid with wind power based on super capacitor control strategy

作　　者：陈秋南[1] 韦钢[1] 卢炜[2] 朱昊[1] 

机构地区：[1]上海电力学院电气工程学院,上海200090 [2]杭州市电力局,浙江杭州310009

出　　处：《电力系统保护与控制》2014年第16期96-102,共7页Power System Protection and Control

基　　金：上海市教育委员会重点学科建设项目(J51303);上海高等教育"085"工程建设项目;国家电网公司科技项目(5209311200GW)

摘　　要：在分析含风电及储能的微电网电压—功率特性基础上,提出一种基于超级电容器控制策略的电压波动抑制方法,可对风电功率的随机波动进行快速补偿,保证风电与超级电容器储能共同向外输出的功率稳定,实现系统母线电压的稳定控制。对该方法进行了PSCAD仿真,仿真结果表明:风速变化时,该方法可有效抑制风电功率变化引起的电压波动;大型阻感性负载投入、外部故障时,该方法亦能减小电压波动和电压恢复时间,从而验证了所提方法的有效性与可行性。Based on the analysis of voltage-power characteristics of micro-grid with wind power and energy storage, an approach to suppress voltage fluctuation based on the super capacitor control strategy is proposed. It can quickly compensate for random fluctuations of wind power, ensuring the common power of wind power and super capacitor transmitted to the outside steady, thereby achieving the system bus voltage stability control. The PSCAD-based simulation of the proposed method is performed, and simulation results show that when wind speed changes, it can effectively suppress the voltage fluctuation caused by changes in wind power; when large resistive inductive loads are input or the external fault happens, it can also reduce the voltage fluctuation and voltage recovery time, which proves the proposed method is effective and feasible.

关 键 词：微电网 风力发电 电压波动 优化控制 超级电容器储能 

分 类 号：TM614[电气工程—电力系统及自动化] TM53