摘要
针对传统安控系统控制策略档位多、定值整定计算量大、过切量大、切机精度不高等问题,提出一种基于机组功率系数和策略定值合并的精细化安控系统控制策略。在基于线性算法的通用控制策略定值整定方法的基础上,定义切机门槛、切机系数、需切量上限等定值;考虑电网发生严重故障后,不同机群对电网动态稳定性的切机效果不同,定义机群的机组功率系数定值,对不同机群的切机效果进行量化,实现安控系统精准切机;同时,提出一种简化安控系统策略定值的方式合并方法,可以有效简化安控策略,减轻安控系统运行管理和操作的压力。对实际工程进行仿真分析,验证了该控制策略的实用性及有效性。
In view of the problems of traditional security control system that there are such as too many gears,large calculation of setting value,too much over cutting and low cutting accuracy in traditional control strategy of safety control system,a fine refined control strategy of security safety control system based on the combination of unit power factor and strategy setting value is proposed.On the basis of the general control strategy setting method based on linear algorithm,the cut-off threshold,cut-off coefficient,and upper cut-off limit,etc.are defined.Considering that after serious faults occur in the system,different clusters have different cut-off effects on the dynamic stability of power grid,define the unit power factor of the cluster is defined,quantitatively calculate the cut-off difference of different clusters is calculated quantitatively,and realize the accurate cut-off of the security control strategy is realized.At the same time,a method to simplifying the strategy setting of security control system is proposed,which can simplifiy the security control strategy effectively and reduce the pressure of the operation management and operation of the security control system.The project simulation verifies the practicability and effectiveness of the proposed control strategy.
作者
闫桂红
杨志国
郭凯
YAN Guihong;YANG Zhiguo;GUO Kai(Inner Mongolia Power Research Institute,Hohhot 010020,China;Inner Mongolia Enterprise Key Laboratory of Smart Grid Simulation of Electrical Power System,Hohhot 010020,China;Inner Mongolia Power(Group)Co.,Ltd.,Hohhot 010010,China)
出处
《内蒙古电力技术》
2020年第6期23-28,共6页
Inner Mongolia Electric Power
基金
内蒙古电力(集团)有限责任公司科技项目“含高比例可再生能源的内蒙古电网振荡风险评估分析及稳定控制方法研究”(2019-87)。
关键词
安控系统
机组功率系数
控制策略
整定方法
security control system
unit power factor
control strategy
combination method
