基于模糊综合评价的小电流接地故障选线研究

Abstract
Figure/Table
References
Related Citation (15)

Download: PDF (304 KB) HTML (1 KB)
Export: BibTeX | EndNote (RIS)

Abstract For single-phase earth fault in non-utility grounded system of distribution network, a single protection algorithm can not fully meet the reliability and sensitivity requirements of the status of line selection. Thus fuzzy theory is applied to the fault line selection in the paper. First it analyzes the electrical characteristics of single-phase earth fault. Then it choices a comprehensive line selection criterion as following: zero sequence current amplitude method, the basis of the fifth harmonic method, the zero-order energy method and the Wave Wavelets maximum value method. Furthermore it establishes each line selection method fault measures and combinational weight using least-squares. Eventually it uses the method based on fuzzy comprehensive multi-criterion decision-making to choose fault line. At last, a 10 kV distribution networks simulation model is set up by Matlab. Fault location, fault close initial angles and transition resistance are simulated to demonstrate the feasibility and improvement of selection accuracy in the theory.

Key words： single-phase earth fault fault line selection fuzzy theory combinational weight

Received: 26 June 2014 Published: 25 July 2013

	Service

	E-mail this article
	Add to my bookshelf
	Add to citation manager
	E-mail Alert
	RSS
	Articles by authors
	Wu Wensheng
	Nie Yixiong

Cite this article:

Wu Wensheng,Nie Yixiong. Research on Single-phase Earth Fault Line Selection in Non-utility Grounded System Based on Fuzzy Comprehensive Evaluation Algorithm[J]. Electrical Engineering, 2013, 14(04): 11-15.

URL:

http://dqjs.cesmedia.cn/EN/Y2013/V14/I04/11