巴基斯坦拉合尔换流站换流变压器绝缘油中乙炔产生原因分析及应对措施  

Acetylene Production in Insulating Oil of Converter Transformer Analysis and Countermeasures of Lahore Converter Station in Pakistan

作　　者：曲文韬 赵航 QU Wentao;ZHAO Hang(State Grid Shandong Electric Extrahigh Voltage Company,Ji'nan 250061,China)

机构地区：[1]国网山东省电力公司超高压公司,山东济南250061

出　　处：《变压器》2024年第9期69-75,共7页Transformer

摘　　要：拉合尔换流站是巴基斯坦最大的变电站,输送功率占到巴方全电网总功率的1/6,换流变压器的稳定直接决定换流站的安全运行,从而直接影响到巴基斯坦国家电网的安全运行。工程投运后在换流变压器本体绝缘油中出现痕量乙炔,本文作者通过分析换流变压器绝缘油中乙炔产生机理,发现极性开关频繁动作是产生乙炔的原因。通过制定动态电压调整策略,减少换流变压器极性开关动作次数,使乙炔含量保持在稳定范围内,不再持续增长,保证换流站安全运行。Lahore converter station is the largest substation in Pakistan,whose transmission power accounts for 1/6 of the total power of the whole Pakistani power grid.The stability of the converter transformer directly determines the safe operation of the converter station,which directly affects the safe operation of the Pakistan State grid.After the project is put into operation,the trace acetylene appears in the insulating oil of the converter transformer.By analyzing the production mechanism of acetylene in the insulating oil of the converter transformer,it is found that the frequent action of the polar switch is the cause of acetylene.By developing a dynamic voltage adjustment strategy,reduce the number of the polar switching actions of the converter transformer,so that the acetylene content is kept in a stable range,and will no longer be continuously increased,so as to ensure the safe operation of the converter station.

关 键 词：换流变压器 极性开关 动态电压调整 

分 类 号：TM406[电气工程—电器]