优化光伏阵列运行方式的光伏电站逆变器控制策略研究  

Research on Control Strategy of Photovoltaic Power Plant Inverter Based on Optimized Way of Photovoltaic Module Operation

作　　者：智腾飞[1,2] 王金梅[1] 周辰[3] 姜德涵 朱菊[1] 肖龙[1] 

机构地区：[1]宁夏大学物理电气信息学院,银川750021 [2]中国电能成套设备有限公司,北京100080 [3]华北电力设计院工程有限公司,北京100120 [4]沈阳供电公司,辽宁沈阳110000

出　　处：《电测与仪表》2013年第10期59-63,88,共6页Electrical Measurement & Instrumentation

基　　金：国家自然科学基金资助项目(51167015);宁夏回族自治区自然科学基金资助项目(NZ1152);科技部国际合作项目(2011DFA11780)

摘　　要：根据并网光伏电站系统的技术参数,提出光伏阵列运行方式优化设计方案,并利用RETScreen软件对工程所在地代表年的太阳辐射资料进行数据对比分析,结果表明所提出的运行方式能够显著提高光伏阵列利用太阳光照的能力。设计了一种双闭环电压空间矢量控制策略,通过Matlab/Simulink对三相逆变器输出电流进行仿真并检测谐波含量,电流波形改善明显,接近单位功率因数,输出电流谐波含量符合并网发电系统入网电流的谐波技术指标要求,并进一步提高系统的光电转换效率。This paper proposes an optimizing design scheme of photovohaic （PV） module according to the technical parameters of Grid-connected PV Power Plant. Statistics analysis was conducted on solar radiation data of chosen engineering area in the typical year with the assistance of RETScreen. Based on the analysis, the operation mode can obviously improve the PV module＇s ability to use the sun light to design a dual-closed loops voltage space vector control strategy. The output current and its harmonics through inverter were simulated via Matlab/Simulink. The result indicates that current waveform has been significantly improved due to the above experiment. Moreover, the harmonics content fulfills the index requirements for current harmonic technique of grid-connected system, the photoelectric conversion efficiency has been further improved.

关 键 词：光伏电站 最佳倾角 三相逆变器 电压空间矢量 谐波分析 

分 类 号：TM464[电气工程—电器]