Suzhou Electric Appliance Research Institute
期刊号: CN32-1800/TM| ISSN1007-3175

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高压直流输电用阀电抗器铁芯损耗试验研究

来源:电工电气发布时间:2019-05-16 15:16 浏览次数:749
高压直流输电用阀电抗器铁芯损耗试验研究
 
黄华,张翔,刘磊,方太勋,杨帆,郑力
(南京南瑞继保电气有限公司,江苏 南京 211102)
 
    摘 要:换流阀运行时,阀电抗器仅在换流阀开通和关断的暂态过程中承受电压,且交替工作于不饱和、饱和两种状态,因此无法直接引用传统的铁芯损耗计算公式进行铁芯损耗计算,也就无法对阀电抗器的铁芯设计进行校核。基于铁芯损耗发热引起的温升等效原则,在相同的电抗器进水温度和相近的环境温度下,分别设计了高频和工频工况下的铁芯测温试验,根据工频工况下测得的铁芯温升(对环温),并利用高频工况下试验得到的铁芯损耗和铁芯温升(对环温)的关系曲线,得到工频工况下的铁芯损耗实际值,从而对阀电抗器铁芯设计进行校核,确保在换流阀长期运行时不会阀电抗器出现异常发热。
    关键词:换流阀;阀电抗器;铁芯损耗;光纤测温
    中图分类号:TM406     文献标识码:A     文章编号:1007-3175(2019)05-0049-04
 
Experimental Study on Iron Core Loss of Valve Reactor for HVDC Transmission
 
HUANG Hua, ZHANG Xiang, LIU Lei, FANG Tai-xun, YANG Fan, ZHENG Li
(NR Electric Co., Ltd, Nanjing 2111 02, China)
 
    Abstract: The valve reactor only withstands the voltage in the transient process of valve opening and closing, and it alternatingly works in the unsaturated and saturated two states, so that the core loss calculation couldn’t directly quote the traditional core loss calculation formula and also could check the core design of the valve reactor. This paper designed the iron core temperature test under high frequency and power frequency conditions respectively based on the equivalent principle of temperature rise caused by iron core loss and heat, which was the same reactor inlet temperature and similar ambient temperature. According to the core temperature rise (on the temperature) measured under the power frequency conditions, the test under high frequency condition was utilized to get the relation curve of the iron core loss and the iron core temperature rise (for the ambient temperature) and the actual value of iron core loss under power frequency condition, so as to check the iron core design of valve reactor, and to ensure that the valve reactor does not appear abnormal heat when converter valve is in the long-term operation.
    Key words: converter valve; valve reactor; iron core loss; fiber temperature measurement
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