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

• 作者: Hengyong Liu Jing Li Jinxin Ouyang Xiaofu Xiong Xiufen Gong Yinghua Xie
• 来源期刊: 电力能源(英文)
• 学科: 医学
• 关键词: Distribution Network NEUTRAL GROUNDING MODE RELIABILITY DECISION Method Objective FUNCTION
• 年，卷（期）: 2014,（4）
• 页码范围: 656-664
• 页数: 9页
• 分类号: R73

摘要

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.