摘要
以一大型炼化企业电网为例,采用基于时域的动态仿真分析方法,模拟了严重故障下企业电网孤岛运行全过程,校核了现有企业电网低频减载措施与电动机低压保护定值间的配合情况,分析得出大型工业电网在孤岛运行时低频减载措施与马达低压保护配置间及SVC配合上普遍存在的问题,提出了低频减载措施与电动机低压保护协调配合策略。经过仿真验证,在确保企业电网安全稳定运行的基础上,损失负荷代价最小。
Taking a large petrochemical enterprise grid for example, based on the time-domain dynamic simulation a- nalysis method to simulate the whole island operation process due to the serious fault, the existing problems between low frequency load shedding and the low voltage trip of motors and SVC are concluded. The coordination method is pro- posed. And through simulations, the least total loss of load is reached making sure the island operation of the enterprise stable.
出处
《华北电力大学学报（自然科学版）》
CAS
北大核心
2014年第2期47-50,65,共5页
Journal of North China Electric Power University：Natural Science Edition
基金
国家863高技术基金资助项目(2011AA05A105)
中国石化总部2011年科技项目
关键词
低频减载措施
低压脱扣
孤岛运行
优化配置
频率
under-frequency load shedding
low voltage trip
island operation
optimization
frequency
