考虑谐波损耗特性的干式平波电抗器热效应模拟与验证  

Simulation and Verification on Thermal Effects of Dry-type Smoothing Reactor Considering Harmonics Loss Characteristics

作　　者：李星汉[1] 李永建[1] 张长庚[1] 高冲 LI Xinghan;LI Yongjian;ZHANG Changgeng;GAO Chong(State Key Laboratory of Reliability and Intelligence of Electrical Equipment,Hebei University of Technology,Tianjin 300130,China;Global Energy Interconnection Research Institute,Beijing 102209,China)

机构地区：[1]河北工业大学省部共建电工装备可靠性与智能化国家重点实验室,天津300130 [2]全球能源互联网研究院,北京102209

出　　处：《高压电器》2021年第9期58-65,共8页High Voltage Apparatus

基　　金：国家电网有限公司总部管理科技项目(5500-201958394A-0-0-00)。

摘　　要：为研究谐波电流损耗特性对特高压干式平波电抗器热效应的影响,文中分析了干式平波电抗器的损耗机理,提出了其包封绕组直流损耗、交流损耗及涡流损耗和结构件涡流损耗的计算方法。通过将电磁损耗密度添加至温度场作为热源,建立了电磁—热多物理场映射关系,较准确地模拟了对流换热过程并实现了温升计算,最后开展了干式平波电抗器温升试验。研究结果表明:采用考虑谐波损耗特性的计算方法,计算值与试验值最大误差为9.1%,平均误差为4.34%,温升分布规律吻合较好,满足工程精度要求,为工程设计人员提供了相应的理论依据。For studying the influence of harmonic current loss characteristics on the thermal effects of UHV dry-type smoothing reactor,the loss mechanism of the dry-type smoothing reactor is analyzed in this paper and the analytical calculation method for the DC loss,AC loss and eddy current loss of encapsulations winding and for eddy current loss of structural parts is proposed.By adding the electromagnetic loss density to the temperature field as the heat source,the electromagnetic-thermal multi-physics mapping relationship is set up.The convection heat transfer process is simulated more accurately and the temperature rise calculation is realized,and finally the temperature rise test for the drytype smoothing reactor is performed The results of the research show that,with adoption of the calculation method considering harmonic loss characteristic,the maximum error between the calculated value and the test value is 9.1%and the average error is 4.34%.The distribution law of temperature rise is in good agreement with the calculation results,meets the engineering accuracy requirements and provides engineering designers with corresponding theoretical basis.

关 键 词：干式平波电抗器 谐波损耗特性 温升试验 热效应模拟 

分 类 号：TM478[电气工程—电器]