Single-Phase Grounding Fault Location in Wind Farm Based on Zero-Sequence Current

Authors

Yanyan Zheng, School of Electrical and Electronic Engineering, North China Electric Power University Baoding, Baoding 071003, China;
Yongli Zhu, School of Electrical and Electronic Engineering, North China Electric Power University Baoding, Baoding 071003, China;
Tongtong Liu, School of Electrical and Electronic Engineering, North China Electric Power University Baoding, Baoding 071003, China;
Shanshan Su, School of Electrical and Electronic Engineering, North China Electric Power University Baoding, Baoding 071003, China;

Abstract

Abstract: The wind power system is different from the conventional transmission system, and its collecting line contains multi sections of cable. The collecting line of wind farm adopts overhead line-power cable hybrid transmission form, and its distance is about 3~20km. Wind farm 35kV neutral point grounding method is different from the conventional distribution network, and its neutral point adopts the winding grounding transformer. In hybrid transmission lines, due to the different velocities of traveling wave in power cable and overhead line, the traditional location algorithm for uniform transmission line is not suitable. A new method of single-phase to grounding fault location based on zero-sequence current is put forward. The neutral point grounding method of wind power system is studied, and the method of comparing zero-sequence current similarity is put forward for the single-phase grounding fault. The simulation shows that the proposed method is more adaptable to wind farms.

Recommended Citation

Zheng, Yanyan; Zhu, Yongli; Liu, Tongtong; and Su, Shanshan (2019) "Single-Phase Grounding Fault Location in Wind Farm Based on Zero-Sequence Current," Journal of System Simulation: Vol. 31: Iss. 7, Article 18.
DOI: 10.16182/j.issn1004731x.joss.17-0227
Available at: https://dc-china-simulation.researchcommons.org/journal/vol31/iss7/18

First Page

1408

Revised Date

2017-08-23

DOI Link

https://doi.org/10.16182/j.issn1004731x.joss.17-0227

Last Page

1415

CLC

TM755

Recommended Citation

Zheng Yanyan, Zhu Yongli, Liu Tongtong, Su Shanshan. Single-Phase Grounding Fault Location in Wind Farm Based on Zero-Sequence Current[J]. Journal of System Simulation, 2019, 31(7): 1408-1415.

DOI

10.16182/j.issn1004731x.joss.17-0227