摘要
城市电网的电力电缆线路比例增大,电网中性点经电阻接地的方式引起广泛关注。以宁波110 kV海油变电站为例,介绍了中性点经电阻接地方案的确定,重点介绍了中性点电阻接入系统的方式,接地变压器容量及电阻值等的选择,以及保护配置和设计原则。
With the increased proportion of power cable used in urban network,the mode of neutral-point resistance grounding is paid for wide attention.Taken Ningbo Haiyou substation as an example,the plan of neutral-point resistance grounging is determined.The mode of neutral-point resistance connected into system,the selection of the capacity of grounding transformer and the selection of resistance value,and the principle of protection configuration and design are discussed in detail.
出处
《供用电》
2010年第3期24-26,共3页
Distribution & Utilization
关键词
设备选择
保护配置
中性点接地方式
电阻措施
selection of equipment
protection configuration
neutral-point grounding mode
resistance measure
