电气距离计算在风电故障分析中的应用

Application of electrical distance calculation in analysis wind power fault

通过比较几种不同的电气距离计算方法,并利用软件仿真验证,发现采用传统阻抗法表示的电气距离在功率变化较大的情况下,不能很好地表征节点间的电气距离;而灵敏度法虽然物理意义不明确,其针对性却更强。而且灵敏度法表征的电气距离在设计电网分区和相邻风电场故障防范上,比传统的阻抗法更加精确和有效。

In this paper,it discovers that,by the comparison of several different methods to electric distance calculation and simulation,the electric distance between node presented by the traditional impedance method may not be accurate under big change of power; sensitivity method is well directed although with undefined physical significance.The electric distance presented by sensitivity method is more accurate and effective than that presented by the traditional impedance method from the aspects of network portioning and failure prevention for nearby wind farm.