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电网技术  2014 

电网对称短路故障时分布式电源功率注入对并网点电压的支撑作用

DOI: 10.13335/j.1000-3673.pst.2014.03.019, PP. 669-674

Keywords: 分布式电源,电网故障,电压支撑,渗透率

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Abstract:

根据分布式电源(distributedgeneration,DG)等效电路模型及相量图,推导了故障时刻分布式电源对并网点电压支撑作用的原理,揭示了电压支撑效果与电网阻抗比及DG渗透率之间的关系。据此,提出了故障时刻根据电网阻抗比分配DG输出有功和无功来支撑并网点电压的方法。仿真算例结果验证了所提方法的有效性。

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