摘要
随着服务于国家双碳战略目标的海上风电迅速发展,高湿度、高盐雾、重污秽、易凝露等特殊运行环境诱发的沿面放电问题给电气设备的运行可靠性带来了极大挑战。该文首先阐明了研究湿污绝缘材料沿面放电问题的必要性,对湿污绝缘材料沿面闪络发展的4个宏观物理过程进行了详细介绍;然后分析了湿污绝缘材料表面冷凝相变与局部电弧耦合过程的研究现状,分别归纳了滴状冷凝、沿面闪络电–热–光–等离子体效应、冷凝相变与沿面放电耦合作用机理以及湿污绝缘材料沿面闪络放电模型4个方面的建模思想和研究方法;最后,针对现有研究的不足,对湿污绝缘材料沿面放电问题的研究重点、技术难点和发展趋势进行了展望。该文内容有助于揭示湿污绝缘材料表面冷凝相变与沿面放电多效应协同过程的耦合作用机制,可为适用于工程实际的湿污绝缘材料沿面闪络放电模型构建提供基础理论支撑。
With the rapid development of offshore wind power,which serves the national“dual-carbon”strategy goal,the problem of creeping discharge induced by special operating environments such as high humidity,high salt spray,heavy fouling,and easy condensation has brought great challenges to the operational reliability of electrical equipment.We firstly clarify the necessity of studying the creeping discharge of wet-dirty insulating materials,and introduce four macroscopic physical processes of creeping discharge of wet-dirty insulating materials in detail.Then,we analyze the current research status of the coupling process of condensation phase change and local arc on the surface of wet-dirty insulating materials,and summarize the mechanisms of drop condensation,electric-thermal-optical-plasma effect of creeping discharge,coupling mechanism of condensation phase change and creeping discharge,respectively.Finally,in view of the shortcomings of the existing research,we put forward the prospects in the research focus,technical difficulties and development trend of creeping discharge of wet-dirty insulating materials.The content of this paper helps to reveal the coupling mechanism between condensation phase transition and multi-effect synergistic process of creeping discharge on the surface of wet-dirty insulating materials,which can provide basic theoretical support for the construction of a model of creeping discharge of wet-dirty insulating materials applicable to engineering practice.
作者
舒胜文
占兆璇
许俊炜
黄雯桦
阮江军
林一泓
SHU Shengwen;ZHAN Zhaoxuan;XU Junwei;HUANG Wenhua;RUAN Jiangjun;LIN Yihong(College of Electrical Engineering and Automation,Fuzhou University,Fuzhou 350108,China;School of Electrical Engineering and Automation,Wuhan University,Wuhan 430072,China;Electric Power Research Institute of Fujian Electric Power Co.,Ltd.,Fuzhou 350007,China)
出处
《高电压技术》
EI
CAS
CSCD
北大核心
2023年第7期2875-2890,共16页
High Voltage Engineering
基金
国家自然科学基金(52207150)。
关键词
绝缘材料
凝露
污秽
沿面闪络
耦合机理
放电模型
insulation materials
condensation
contaminant
creeping discharge
coupling mechanism
discharge model
