摘要
并网风电场在连续运行时会引起公共连接点的电压波动和闪变。分析了风电场接入后,由于风速的变化引起的风机输出功率的波动而导致公共连接点的电压波动和闪变的原因。对国际电工标准IEC61400-21给出的一种风电接入引起公共连接点处的电压波动和闪变计算方法和国际电工委员会IEC/UIC推荐的闪变仪给出的计算闪变的另外一种方法进行了对比分析,并分别应用上述两种方法,对河南某风电场110kV母线的电压做闪变理论计算和仿真计算。根据计算结果,并对比该母线24小时闪变实测数据,得出前计算方法得出的闪变值严重偏小,而后一种计算方法得出的闪变值更符合实测数据。
The continuous operation of wind farm integrated in power system will cause the voltage fluctuation and flicker of PCC （Point of Common Coupling）. This paper analyzes the reason of voltage fluctuation and flicker of PCC caused by the output power fluctuation of wind turbine due to wind speed changes when wind farm is connected. IEC61400-21 gives a calculation method for voltage fluctuation and flicker of PCC caused by wind farm integration and IEC/UIC recommends another flicker measurement method given by flicker meter. The two methods are compared and analyzed. Voltage flicker calculation and simulation on 110 kV bus of a wind farm in Henan province are done by using the two methods respectively. The calculation results and the comparison of the real measurement data of the bus during 24 hours show that the flicker value obtained by the former method is rather small, while the value using the latter is more in line with the measured data.
出处
《电力系统保护与控制》
EI
CSCD
北大核心
2011年第20期66-70,共5页
Power System Protection and Control
基金
国家自然科学基金项目(50907005)
湖南省高校重点实验室开放基金项目(gxkfjj2010-7)~~
