摘要
介绍目前我国配电网保护应用概况。分析配电网保护对供电质量的影响,提出以用户故障停电户次数、停电户时数、短时停电户次数与电压骤降户次数这4个故障影响指标评价保护方案对供电质量影响,并介绍故障影响指标与用户故障损失的计算方法。探讨如何在制定整定保护方案时,考虑其对供电质量与故障损失的影响,提出对已有保护方案的改进措施。
The current deployment scheme and applications of distribution protection are introduced in China. The impacts of distribution protection to service quality are analyzed. Four fault impact indices user including fault caused customer interruption times customer, interruption hours, customer momentary interruption times and customer voltage sag times are proposed to evaluate the impact of a protection scheme to service quality. The calculation methods of fault impact indices and fault caused customer losses for a protection scheme are presented. It is pointed out that the chosen distribution protection scheme shall meet the requirements of reali- bity and reduce customer loss to the possible lower level. The improvement measures of distribution protection to increase service quality are suggested.
出处
《供用电》
2012年第3期13-21,共9页
Distribution & Utilization
关键词
配电网
保护
供电质量
故障损失
distribution network
protection service quality fault loss
