摘要
针对光伏并网后的配电网稳定性问题,通过绘制P-V曲线,分析了光伏电站接入对配电网静态电压稳定性影响,利用DIgSILENT平台构建了光伏发电系统暂态仿真模型,分析了光伏电站并网点三相短路故障及光伏电站出力波动对系统暂态电压稳定性的影响。仿真结果表明:光伏电站并网点与配电网联系越紧密,静态电压稳定性越好;故障清除时间越短,光伏电站对系统暂态稳定性影响越小;影响系统稳定性的最主要因素是光伏电源有功输出波动。
In view of the stability of the grid connected photovoltaic system, the influence of photovoltaic power station on the static voltage stability of distribution network was analyzed by drawing the - curve. The effects of PV power station, the three phase short circuit fault and the output fluctuation of photovoltaic power station on the transient voltage stability of the system were analyzed. The simulation results showed that when PV power station and grid connected closer, the stability of the voltage static would be better. With a shorter fault clearing time, the influence of the photovoltaic power station on the transient stability of the system would be smaller. The main factor that affected the stability of the system was the active power output fluctuation.
作者
汪泽
李春兰
王长云
曹成帅
WANG Ze;LI Chunlan;WANG Changyun;CAO Chengshuai(College of mechanical and traffic, Xinjiang Agricultural University, Urumqi 830052, China)
出处
《能源研究与管理》
2016年第4期50-54,共5页
Energy Research and Management
基金
国家自然科学基金项目(51467021)
新疆维吾尔自治区高等学校科研计划项目(XJEDU2012I15)
