考虑负荷特性的电力系统低频减载系统设计  

Design of low frequency load shedding system of power system considering load characteristics

作　　者：高虹霞 高剑[2] 宋烨 朱童 吴佳芳 GAO Hongxia;GAO Jian;SONG Ye;ZHU Tong;WU Jiafang(Ziyang Power Supply Company of Sichuan Electric Power Company,Ziyang 641300,China;State Grid Sichuan Electric Power Company,Chengdu 610041,China)

机构地区：[1]四川省电力公司资阳供电公司,四川资阳641300 [2]国网四川省电力公司,四川成都610041

出　　处：《电子设计工程》2023年第16期167-170,175,共5页Electronic Design Engineering

摘　　要：目前电力系统低频减载方案未分析负荷切除后系统的灵敏度恢复问题,因此,在考虑负荷特性的基础上设计了电力系统低频减载系统。以模块化的方式设定系统硬件,分别设计了双处理模块、数据采集模块和通信模块,与传统的DSP处理器模式不同,同时采用ColdFire微控制器和MCF52235微处理器构建双CPU结构,通过DMA定时器构建采集模块,实现数据采集,利用CAN总线完成通信。将负荷分为常规负荷和频率中断负荷,并建立目标函数,确定代价控制模型,从而实现电力系统低频减载系统的软件流程。实验结果表明,设计系统负荷的少切比例高达8.25%,还能够优化不同轮次的负荷比例参数,从而确定最佳优化方法。At present,the power system low⁃frequency load shedding scheme does not analyze the sensi⁃tivity recovery of the system after load removal.Therefore,the power system low⁃frequency load shedding system is designed on the basis of considering the load characteristics.The system hardware is set in a modular way,and the dual processing module,data acquisition module and communication module are designed respectively.Different from the traditional DSP processor mode,the dual CPU structure is constructed by ColdFire microcontroller and MCF52235 microprocessor,the acquisition module is constructed by DMA timer to realize data acquisition,and the communication is completed by CAN bus.The load is divided into conventional load and frequency interruption load,and the objective function is established to determine the cost control model,so as to the software flow of power system low⁃frequency load shedding system.The experimental results show that the proportion of less load cut is as high as 8.25%,and the load proportion parameters of different rounds can be optimized,so as to determine the best optimization method.

关 键 词：负荷特性 电力系统 低频减载 减载系统 频率中断负荷 

分 类 号：TM24[一般工业技术—材料科学与工程]