消弧线圈有载开关误动调挡原因分析及解决措施  

Cause Analysis of the Malfunction of the On-Load Switch in the Arc-Suppression Coil and Relevant Solutions

作　　者：何聪 胡柏玮 古丝月 杜南希 肖翔宇 HE Cong;HU Bowei;GU Siyue;DU Nanxi;XIAO Xiangyu(Urban Power Supply Branch of State Grid Chongqing Electric Power Company,Chongqing 400015,P.R.China)

机构地区：[1]国网重庆市电力公司市区供电分公司,重庆400015

出　　处：《重庆电力高等专科学校学报》2024年第4期1-6,共6页Journal of Chongqing Electric Power College

摘　　要：对可能引起消弧线圈有载开关误动调挡的原因进行分析,指出消弧线圈内铁铬铝阻尼电阻偏差大和调挡控制器闭锁程序缺陷是导致有载开关误动调挡的主要原因。提出用镍铬阻尼电阻替代铁铬铝阻尼电阻,并在有载开关调挡电机电源回路中增加电压闭锁模块,来有效解决消弧线圈有载开关误动调挡问题。将上述两条措施应用至重庆市某电力公司辖区变电站内116套消弧线圈成套装置中,运行结果表明,这两条措施确能有效避免消弧线圈有载开关误动调挡,能进一步提高电网供电可靠性。This paper analyzes the causes of the malfunction of the on-load switch in the arc-suppression coil.It points out that the main causes are the large deviation of the Fe-Cr-Al damping resistance in the arc-suppression coil and the defects of the locking program of the shift controller.In order to reduce the malfunction rate of the on-load switch of the arc-suppression coil,it suggests replacing the Fe-Cr-Al damping resistance with the Ni-Cr one and adding a voltage blocking module to the power circuit of the on-load switch shifting motor.The above two measures are applied to 116 sets of arc-suppressing coil devices in the substation of a power company in Chongqing,and the operating results show that they can effectively avoid the malfunction of the on-load switch of the arc-suppressing coil and further improve the reliability of power supply of the grid.

关 键 词：消弧线圈 有载开关 调挡装置 阻尼电阻 电气闭锁 

分 类 号：TM632[电气工程—电力系统及自动化]