沙戈荒风光储场站开关柜局部放电高频感知技术  

High-frequency Sensing Technology of Partial Discharge of Switchgear Cabinet for Wind Solar&Energy Storage Stations in Gobi Deserts

作　　者：李伟 叶昶 李乐颖 郑书生[2] 姚维为 孙勇 胡德鹏 唐志国[2] 齐波[2] LI Wei;YE Chang;LI Leying;ZHENG Shusheng;YAO Weiwei;SUN Yong;HU Depeng;TANG Zhiguo;QI Bo(China Three Gorges Corporation,Wuhan 430014,China;State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources,North China Electric Power University,Beijing 102206,China)

机构地区：[1]中国长江三峡集团有限公司,武汉430014 [2]华北电力大学新能源电力系统国家重点实验室,北京102206

出　　处：《高压电器》2025年第3期52-62,共11页High Voltage Apparatus

基　　金：中国长江三峡集团有限公司科研项目资助(202103368)。

摘　　要：在沙戈荒风光储新能源场站内,电气装备运行工况恶劣,且运维难度大、运维成本高。电气装备健康状态远程智能监控是提升运维效率、降低度电成本的重要手段。为此,文中针对35 kV开关柜提出一种内置式高频感知技术。首次研究了高灵敏度内置式高频电流耦合与传感技术,开发了基于三相、三频段能量占比的三维聚类识别抗脉冲型干扰方法。研究结果表明,内置式高频电流检测方法的灵敏度可达22 pC,能量占比三维聚类识别方法可有效区分开关柜内外脉冲信号。在此基础上,研制了开关柜局部放电高频感知系统,并将其应用于沙戈荒地区风光储场站35 kV开关柜。文中研究结论对于推动沙戈荒地区风光储场站开关柜绝缘状态远程智能监控技术的发展具有重要意义。In the new energy station of wind,solar and energy storage in Gobi deserts,the operating conditions of electrical equipment are severe,the operation and maintenance are difficult and the operation and maintenance cost is high.Remote intelligent monitoring of the health status of the electrical equipment is an important prerequisite for improving operation and maintenance efficiency and reducing the cost of electricity.Therefore,a kind of built-in high-frequency sensing technology for 35 kV switchgear cabinet is proposed in this paper.The high-sensitivity built-in high-frequency current coupling and sensing technology is studied for the first time.A three-dimensional clustering recognition anti-pulse interference method based on three-phase and three-band energy ratio is developed.The study result shows the sensitivity of the built-in high frequency current detection method is up to 22 pC.The three-dimensional clustering recognition method of energy ratio can effectively distinguish internal and external pulse signal of switchgear cabinet.On this basis,the partial discharge high frequency sensing system of switchgear cabinet is developed and used in 35 kV switchgear cabinet of solar and energy storage station in Gobi deserts.The study conclusion in this paper has significance for the development of remote intelligent monitoring technology of insulation status of switchgear cabinet of solar and and energy storage station in Gobi deserts.

关 键 词：新能源场站 开关柜 局部放电 高频 三维聚类 

分 类 号：TM855[电气工程—高电压与绝缘技术] TM591