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Luo, X.-C., Li, L. and Wei, Z.-L. (2011) Applications of Life Cycle Cost Theory in Decision-Making of Investment for Distribution Transformers Renovation. Power System Technology, 35, 207-210.

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• TITLE: Study on Decision Method of Neutral Point Grounding Mode for Medium-Voltage Distribution Network

  AUTHORS: Hengyong Liu, Xiaofu Xiong, Jinxin Ouyang, Xiufen Gong, Yinghua Xie, Jing Li

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

  JOURNAL NAME: Journal of Power and Energy Engineering, Vol.2 No.4, April 23, 2014

  ABSTRACT: 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.