摘要
线路过载情况下,保护的不当动作及保护控制措施的不合理配合容易扩大事故规模,造成严重的后果。针对该问题,提出一种分段迭代式线路过载保护控制协调优化方法,以实现保护、控制措施的深度交互配合。所提方法对线路热稳定极限运行时间进行分段,并针对当前时段构建相应的保护控制协调优化模型。同时,依据控制措施分段投运情况,滚动计算线路功率值,调整过负荷保护动作时间,进而实现保护控制措施的迭代优化。所提方法有利于延长过负荷保护动作时间,扩大控制资源范围,获得更好的过载调整效果。仿真算例验证了所提方法的有效性。
In the case of line overload,improper action of protection,and unreasonable cooperation of protec⁃tion and control measures contribute to the expansion of accident and serious consequences.Aiming at this problem,a coordination and optimization method of line overload protection and control measures based on subsection iteration is proposed to realize the deep interaction and cooperation of protection and control strategies.The proposed method divides the limit operation time of line thermal stability into sections,and constructs the corresponding protection and control optimization model in the current time period.At the same time,according to the implementation of control measures,the power value of the overloaded line is calculated by rolling,the operation time of overload protection is adjusted,and the iterative optimization of the protection and control measures can be realized.The proposed method is beneficial to prolonging the operation time of overload protection,expanding the scope of control resources and obtaining better adjust⁃ment effect.The effectiveness of the proposed method can be verified by simulative results.
作者
王紫琪
李军
陈炜
肖智宏
张祥龙
申洪明
WANG Ziqi;LI Jun;CHEN Wei;XIAO Zhihong;ZHANG Xianglong;SHEN Hongming(State Grid Economic and Technological Research Institute,Beijing 102209,China)
出处
《电力自动化设备》
EI
CSCD
北大核心
2021年第6期114-120,共7页
Electric Power Automation Equipment
关键词
紧急控制
过负荷保护
线路过载
连锁故障
分段迭代
潮流追踪
emergency control
overload protection
line overload
cascading failure
subsection iteration
power flow tracing
