Contingency Screening and Ranking for Voltage Stability Based on Grey Correlation Analysis Method

doi:10.11930/j.issn.1004-9649.2017.04.071.06

Electric Power ›› 2017, Vol. 50 ›› Issue (4): 71-76.DOI: 10.11930/j.issn.1004-9649.2017.04.071.06

• Power System • Previous Articles Next Articles

Contingency Screening and Ranking for Voltage Stability Based on Grey Correlation Analysis Method

DANG Jie¹, ZHANG Wenchao², WANG Shaobo³, XI Jianghui¹, XU Youping¹, LU Yong^2,4, GU Xueping³, PAN Yan²

1. Central China Electric Power Dispatching and Control Branch of State Grid, Wuhan 430077, China;
2. NARI Group Corporation Beijing Monitoring Technology Center, Beijing 102200, China;
3. School of Electrical and Electronic Engineering, North China Electric Power University, Baoding 071003, China;
4. State Grid Jiangsu Economic Research Institute, Nanjing 210008, China

Received:2017-01-17 Online:2017-04-20 Published:2017-04-13
Supported by:
This work is supported by National High Technology Research and Development Program (863 Program) Project (No. 2015AA050203), the National Natural Science Fund Project(No.51307051), the Central University Basic Business Expenses Special Funds for Scientific Research Projects (No. 2014 ZP03, No. 2015ZD01)and the National Natural Science Youth Funded Projects (No. 51507116).

Abstract

Abstract: Contingency screening and ranking is an important part of power system voltage stability assessment. In view of the unicity of the existing power flow-based contingency screening method, a new contingency screening and ranking method is proposed in this paper. Firstly, a contingency screening index system is built by considering the characteristics of induction motor, load capacity, power support and transmission lines. Secondly, in view of the limits of single index in reflecting the severity of contingency, the grey correlation analysis method is used to obtain the integrated index and to assess severity of contingency by integrating multiple factors. The proposed method is verified through the data of an actual power network which has voltage stability problems. The result shows that the voltage stability contingency screening and ranking method based on grey correlation analysis is reasonable and effective.

Key words: contingency screening and ranking, induction motor, load capacity, generator support, grey correlation analysis method

CLC Number:

TM714.2

DANG Jie, ZHANG Wenchao, WANG Shaobo, XI Jianghui, XU Youping, LU Yong, GU Xueping, PAN Yan. Contingency Screening and Ranking for Voltage Stability Based on Grey Correlation Analysis Method[J]. Electric Power, 2017, 50(4): 71-76.

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Contingency Screening and Ranking for Voltage Stability Based on Grey Correlation Analysis Method

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