摘要
针对电力系统中含多黑启动电源的恢复分区易出现功率不平衡且并行恢复有效性和可靠性受限等问题,提出了考虑机组启动及分区内有功平衡的改进谱聚电网恢复分区方法。该方法以子区域尽可能规模均衡且区域间联络线权重尽可能小为优化目标,增加考虑机组出力及启动成功率的机组分组优化模型,并在切图权重中引入线路传输功率,使目标函数考虑分区有功平衡的影响。算例分析结果表明:该方法能有效考虑待启动机组的恢复及分区有功平衡,减小区域联络线上传输的功率,有助于提高分区并行恢复及并列的可靠性。
Power imbalance and limited effectiveness and reliability of parallel restoration are apt to occur in the restoration partition with multiple black-start power sources in power system.The paper proposes a portioning method for power system restoration based on an improved spectral clustering considering unit startup and active power balance in the partition.With the optimization goals of scale equilibrium in subregions and minimum weights of inter-regional tie lines,a unit grouping and optimization model considering the output power and success rate of startup is added,and the transmission power of the lines is introduced into the cutting weight so that the objective function can consider the influence of active power balance in the partition.The analysis results of an example show that this method can soundly consider the recovery of units to be started and the active power balance in different districts,reduce the transmission power on regional tie lines and help to improve the reliability of parallel restoration and parallelization.
作者
叶寅钢
欧阳利平
钟磊
方宇迪
张胜峰
何育钦
YE Yingang;OUYANG Liping;ZHONG Lei;FANG Yudi;ZHANG Shengfeng;HE Yuqin(State Grid Taizhou Power Supply Company,Taizhou Zhejiang 317000,China;School of Electrical Engineering and Automation,Wuhan University,Wuhan 430072,China)
出处
《浙江电力》
2021年第7期12-18,共7页
Zhejiang Electric Power
基金
国家自然科学基金项目(51677137)
国网浙江省电力有限公司科技项目(5211TZ1900S4)。
关键词
电力系统
系统恢复
机组分组
分区
谱聚算法
power system
system restoration
unit grouping
partitioning
spectral clustering