Analysis on ⅡDGs Negative-Sequence Current upon Asymmetric Fault
As a large number of distributed generations (DG) are connected to the distribution network, the fault current of the distribution network has been changed, and the reliable operation of relay protection in the distribution network has been influenced. In the background whether the negative-sequence current protection can be used in the distribution network containing inverter interfaced DG (IIDG), this paper studies the mainstream method of controlling the fault characteristics of inverter based on negative-sequence component, analyzes and deduces a negative-sequence control structure, demonstrates the inhibitory effect of negative sequence control algorithm on the fault current, and has important reference value in proposing the protection principle for IIDG-containing distribution network. Finally, RTDS test simulates the asymmetric short-circuit fault conditions of the photovoltaic inverter, to verify the conclusions of this paper.
ⅡDG fault characteristic analysis negative sequence current relay protection
Hua Shao Haobin Zhu Rong Lin Guangfu Xu Qunbing Yu Chunguang He
Hebei Economic Research Institute NR Electric Co Ltd
国际会议
西安
英文
1-5
2016-09-01（万方平台首次上网日期，不代表论文的发表时间）