摘要
针对新型电力系统建设中对快速保护电器分断快速性的高性能要求,提出一种基于多目标多参数综合优化的快速保护电器涡流斥力机构.在涡流斥力机构工作机理分析的基础上,采用Maxwell进行机构有限元仿真,分析影响机构运动特性的关键设计参数.在现有ABB-A95(AC3)型产品基础上,沿用96 A/380 V规格的双断点触头系统,结合触头运动平均速度快与分闸末速度小的综合目标,通过NSGA-Ⅱ多目标优化算法实现涡流斥力机构的最优结构参数求解.经仿真分析与样机实验,所设计的涡流斥力机构具有较好的保护分闸运动特性,可在分闸触发2.85 ms内实现20 mm满行程快速运动,最大速度7.95 m·s^(-1),末速度7.46 m·s^(-1).相较于ABB-A95(AC3)分闸时间减少约15 ms,并实现快速保护电器样机50 kA短路电流可靠分断.
Aiming at the high-performance requirements for the rapid breaking speed of fast-protecting apparatus in the construction of new power systems,an eddy-current repulsion mechanism for fast-protecting apparatus based on multi-objective and multi-parameter comprehensive optimization is proposed.Based on the analysis of the working mechanism of the eddy current repulsion mechanism,the finite element simulation of the mechanism was carried out by Maxwell and the key design parameters that affect the motion characteristics of the mechanism were analyzed.On the basis of the existing ABB-A95(AC3)product model,the 96 A/380 V double-break contact system is continually used.Considering the comprehensive goals of fast average speed of contact movement and low speed at the end of opening,the optimal structural parameters of the eddy current repulsion mechanism were solved through the NSGA-II multi-objective optimization algorithm.After simulation analysis and prototype experiments,the designed eddy current repulsion mechanism has good dynamic characteristics of protective opening.It can complete the rapid movement of 20 mm full stroke within 2.85 ms after break triggering,with a maximum speed of 7.95 m·s^(-1)and a terminal velocity of 7.46 m·s^(-1).Compared with ABB-A95(AC3),the opening time is reduced by about 15 ms,and the prototype of the rapid protection apparatus can reliably break with 50 kA short-circuit current.
作者
郑勇
李戎
李敏昱
庄胜斌
缪希仁
ZHENG Yong;LI Rong;LI Minyu;ZHUANG Shengbin;MIAO Xiren(Fuzhou Power Supply Company of State Grid Fujian Electric Power Co.,Ltd.,Fuzhou,Fujian 350009,China;College of Electrical Engineering and Automation,Fuzhou University,Fuzhou,Fujian 350108,China)
出处
《福州大学学报（自然科学版）》
CAS
北大核心
2023年第1期69-75,共7页
Journal of Fuzhou University(Natural Science Edition)
基金
福建省自然科学基金资助项目(2019J01249)
国网福建省电力有限公司科技资助项目(5213102000DX)。
关键词
涡流斥力机构
新型电力系统
快速保护电器
NSGA-Ⅱ多目标优化
eddy current repulsion mechanism
new power system
rapid protection apparatus
NSGA-Ⅱmulti-objective optimization
