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The neutral grounding mode of medium-voltage distribution network decides the reliability, overvoltage, relay protection and electrical safety. Therefore, a comprehensive consideration of the reliability, safety and economy is particularly important for the decision of neutral grounding mode. This paper proposes a new decision method of neutral point grounding mode for mediumvoltage distribution network. The objective function is constructed for the decision according the life cycle cost. The reliability of the neutral point grounding mode is taken into account through treating the outage cost as an operating cost. The safety condition of the neutral point grounding mode is preserved as the constraint condition of decision models, so the decision method can generate the most economical and reliable scheme of neutral point grounding mode within a safe limit. The example is used to verify the feasibility and effectiveness of the decision method.

KEYWORDS

Distribution Network; Neutral Grounding Mode; Reliability; Decision Method; Objective Function

Cite this paper

Liu, H. , Xiong, X. , Ouyang, J. , Gong, X. , Xie, Y. and Li, J. 2014 Study on Decision Method of Neutral Point Grounding Mode for Medium-Voltage Distribution Network. Journal of Power and Energy Engineering, 2, 656-664. doi: 10.4236-jpee.2014.24088.





Autor: Hengyong Liu1*, Xiaofu Xiong2, Jinxin Ouyang2, Xiufen Gong2, Yinghua Xie1, Jing Li1

Fuente: http://www.scirp.org/



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