光伏发电系统不对称故障功率控制  

Power Control of Photovoltaic Generation system under Unbalanced Grid Faults

作　　者：夏刚 杜跃明 楼晓轩 华赟 李芳 沈琦 王强钢[2] 周念成[2] 

机构地区：[1]浙江电力公司萧山供电局,杭州311100 [2]重庆大学输配电装备及系统安全与新技术国家重点实验室,重庆沙坪坝区400044

出　　处：《电子科技大学学报》2013年第5期694-699,共6页Journal of University of Electronic Science and Technology of China

基　　金：国家自然科学基金(51277184);输配电装备及系统安全与新技术国家重点实验室自主研究项目(2007DA10512711209)

摘　　要：研究电网不对称故障下光伏逆变器的瞬时输出功率特性,结合指令电流的总谐波畸变率的解析推导,提出光伏发电的功率控制算法。考虑光伏逆变器输出电流谐波畸变率限值约束,以有功和无功功率波动的综合幅值最小为目标,建立光伏发电功率控制参数的优化模型。基于无差拍电流跟踪建立光伏发电系统整体模型,利用PSCAD/EMTDC仿真平台验证了该控制策略的可行性。The the characteristics of instance output power of photovoltaic inverters is analyzed under unbalanced grid faults and the power control algorithm of photovoltaic generation is put forward based on the derivation of total harmonic distortion of instruction current. The optimal parameters model of photovoltaic generation is then established with minimum integrated fluctuation amplitude of the active and reactive power as a goal when the restriction of output current harmonic distortion of photovoltaic inverters is taken into account. Finally, the overall model of photovoltaic generation system based on deadbeat current tracking is realized and the feasibility of proposed control strategy is verified with PSCAD/EMTDC simulation software.

关 键 词：电流谐波 配电网 光伏 功率控制 不对称故障 

分 类 号：TM615[电气工程—电力系统及自动化] TM464