动态无功控制方式对风电汇集地区电压稳定性影响分析  

Analysis on impact of dynamic reactive power control on voltage stability in wind farms integration area

作　　者：周红婷[1] 宋玮[1] 

机构地区：[1]华北电力大学电气与电子工程学院,河北保定071003

出　　处：《可再生能源》2015年第8期1130-1134,共5页Renewable Energy Resources

摘　　要：冀北风电汇集地区的动态无功补偿装置大多采用感性支路恒无功控制,在该控制方式下,当系统侧有电容扰动时会造成汇集母线电压大幅升高。针对此问题,文章提出风电场内动态无功补偿装置可采用恒电压控制方式,利用风电场多馈入有效短路比,分析不同控制点对风电汇集地区电压稳定性的影响,并以华北某一风电汇集地区为例,在PSS/E中分别对动态无功补偿装置的恒电压及恒无功控制方式对电压稳定性的影响进行仿真分析,仿真结果验证该控制方式在电压稳定性方面具有良好特性。The constant reactive power control is widely adopted by dynamic reactive power compensation device in wind farms integration area of northern China,but this mode of operation can lead to over voltage if a capacitance disturbance occurs in the power system side. According to this problem, a constant voltage control is proposed for dynamic reactive power compensation device of wind farm, and a concept of multi-infeed effective short-circuit ratio（MESCR） is introduced,which can assess different dynamic reactive power compensation points effect on the system voltage stability. A simulation of wind farm integration area in northern China is carried out by PSS/E, the impact of different dynamic reactive power compensation device control modes of constant reactive power control and constant voltage control on the bus voltage stability is analyzed. The results verify the proposed control mode performs well in aspect of bus voltage stability.

关 键 词：风电汇集地区 动态无功补偿方式 多馈入有效短路比 电压静态稳定 无功电压控制 

分 类 号：TM614[电气工程—电力系统及自动化]