考虑用户负荷特性的低频减载优化策略及实现方法研究  

Research on Low-Frequency Load Shedding Optimization Strategy and Implementation Method Considering User Load Characteristics

作　　者：郑世英 沈国辉 石研 李文杰 张禄晞 赵宇 李娜娜 ZHENG Shiying;SHEN Guohui;SHI Yan;LI Wenjie;ZHANG Luxi;ZHAO Yu;LI Nana(State Grid Inner Mongolia East Electric Power Corporation Limited,Hohhot 010000,Inner Mongolia,China;Beijing Kedong Electric Power Control System Corporation Limited,Beijing 100192,China;State Grid Inner Mongolia East Electric Power Corporation Limited Power Supply Service Supervision and Support Center,Tongliao 028000,Inner Mongolia,China;Beijing Guodiantong Network Technology Co.,Ltd.,Beijing 100160,China)

机构地区：[1]国网内蒙古东部电力有限公司,内蒙古呼和浩特010000 [2]北京科东电力控制系统有限责任公司,北京100192 [3]内蒙古东部电力有限公司供电服务监管与支持中心,内蒙古通辽028000 [4]北京国电通网络技术有限公司,北京100160

出　　处：《电力大数据》2024年第1期78-86,共9页Power Systems and Big Data

基　　金：国网内蒙古东部电力有限公司项目(SGMDFW00YJJS2310036)。

摘　　要：低频减载对于负荷调节的时效性以及准确性要求较高,在负荷削减的过程中存在欠切和过切的现象。同时,负荷调节涉及的用户较多,给用户带来不便,负荷削减还会对设备的正常运行产生影响。针对上述问题,本文提出一种面向用户负荷特征的低频减载分层调节策略。该策略将负荷调节偏差最低、减载用户比例最小作为优化目标;根据高污染、高耗能等不同特征,设置用户负荷的重要等级标签,以此调节参与负荷削减的用户比例,保障普通用户供电正常。此外本文设计了基于负荷控制单元的低频减载系统执行机构,通过预先向负荷控制单元下发调节策略,解决低频减载的时效性和准确性问题。本文通过仿真分析低频减载控制策略的合理性,实现了平均每轮0.87%的较低调控误差,每轮参与负荷削减用户的比例平均值为45%。该策略实现了监测更靠前、切荷更及时、管控更精准的预期目标。Low frequency load shedding requires high timeliness and accuracy in load regulation,and there are phenomena of under cutting and over cutting during the load reduction process.At the same time,load regulation involves a large number of users,which brings inconvenience to users.Load reduction can also have an impact on the normal operation of equipment.In response to the above issues,this article proposes a low-frequency load shedding hierarchical adjustment strategy based on user load characteristics.This strategy takes the minimum deviation in load regulation and the minimum proportion of load shedding users as optimization objectives.According to different characteristics such as high pollution and high energy consumption,set important level labels for user loads to adjust the proportion of users participating in load reduction and ensure normal power supply for ordinary users.In addition,this article designs an execution mechanism for a low-frequency load shedding system based on a load control unit,which solves the timeliness and accuracy issues of low-frequency load shedding by issuing adjustment strategies to the load control unit in advance.This article analyzes the rationality of the low-frequency load shedding control strategy through simulation,achieving a lower control error of 0.87%on average per round,and the average proportion of users participating in load shedding per round is 45%.This strategy has achieved the expected goals of more advanced monitoring,more timely load cutting,and more precise control.

关 键 词：低频减载 负荷控制单元 用户负荷特性 柔性设备 负荷调节率 频率响应 

分 类 号：TM712[电气工程—电力系统及自动化]