摘要
在将已有的敞开式站点改建为用户内布置的终端站时,由于站内面积一般比较紧凑,对接地网的可靠性要求更高,接地网的腐蚀状态诊断和评估工作显得愈加重要。目前,接地网不开挖腐蚀诊断的方法以电网络理论分析方法为主,但该方法在诊断中易出现支路数量超过可观测节点数量,导致高度欠定性问题。由此,提出一种改进的海鸥优化算法,在传统海鸥算法之上,融合高斯映射和莱维飞行策略,提升了计算稳定性和收敛速度;搭建了模拟接地网模型,通过在多种接地网腐蚀情况下的仿真计算,结合对比分析其他常用优化算法,验证了改进海鸥算法的准确性和可靠性。仿真结果表明,融合改进算法的接地网腐蚀支路诊断偏差均低于5%,明显低于其余2种传统优化算法,证明其进一步提高了接地网腐蚀诊断精度。
When an existing open station is converted into a terminal station arranged within the user’s premises,due to the generally compact area of the station,the reliability requirements for the grounding grid are higher,and the diagnosis and evaluation of the corrosion status of the grounding grid are becoming increasingly important.At present,the main method for diagnosing corrosion in grounding grids without excavation relies on electrical network theory analysis.However,this method is prone to having more branches than the number of observable nodes in diagnosis,leading to a high degree of uncertainty.Therefore,an improved seagull optimization algorithm is proposed,which integrates Gauss mapping and levy flight strategy on top of the traditional seagull algorithm,improving computational stability and convergence speed.A simulated grounding grid model is built,and the accuracy and reliability of the improved seagull optimization algorithm are verified through simulation calculations under various grounding grid corrosion conditions,combined with comparative analysis of other commonly used optimization algorithms.The simulation results show that the diagnostic deviation of the corrosion branch in the grounding grid using the improved algorithm is less than 5%,which is significantly lower than the other two traditional optimization algorithms,proving its ability to improve the accuracy of grounding grid corrosion diagnosis.
作者
徐良德
郭挺
卢洵
刘新苗
陈中豪
胡林麟
李诗颖
李沛准
邹符波
XU Liangde;GUO Ting;LU Xun;LIU Xinmiao;CHEN Zhonghao;HU Linlin;LI Shiying;LI Peizhun;ZOU Fubo(Guangzhou Power Supply Bureau,Guangdong Power Grid Co.,Ltd.,Guangzhou 510510,China;Guangdong Power Grid Co.,Ltd.,Guangzhou 510600,China;China Energy Engineering Group Guangdong Electric Power Design Institute Co.,Ltd.,Guangzhou 510700,China)
出处
《电力科学与技术学报》
北大核心
2025年第3期275-282,共8页
Journal of Electric Power Science And Technology
基金
广东电网有限责任公司广州供电局科技项目(030100QQ00230007)。
关键词
接地网
腐蚀诊断
电网络理论
改进海鸥算法
grounding grid
corrosion diagnosis
electrical network theory
improved seagull optimization algorithm
