主井提升系统整流柜快熔断故障分析与处理  

The analysis and handling of a fast-acting fuse fault of a rectifier panel in a main shaft hoist system

作　　者：孙彩宏 朱家斌 魏云鹏 万鑫 崔志强 SUN Caihong;ZHU Jiabin;WEI Yunpeng;WAN Xin;CUI Zhiqiang

机构地区：[1]铁法能源公司晓明矿,辽宁调兵山112700 [2]辽宁调兵山煤矸石发电有限责任公司,辽宁调兵山112700

出　　处：《中国矿山工程》2021年第4期57-59,共3页China Mine Engineering

摘　　要：主井提升系统采用1#、2#两套电流闭环传动系统,2#整流柜在电流1 000 A以下时可正常启动,当电流继续上升至1 800 A时,"快熔断"报警指示灯亮起,整流柜内1个快速熔断器熔断,电机声音异常。分析可能产生的原因,并逐一排查整流柜和主传动系统是否有故障,测试整流柜原付边波形,波形畸变判断故障为6RA70数字调速装置损坏,分配给2#整流柜六组晶闸管的脉冲参差不齐,导致晶闸管不能正常换相,直流电动势和交流电源电压顺向串联形成短路,快速熔断器熔断。The main shaft hoist system is powered by #1 and #2 electric current closed loop drive systems. The #2 rectifier panel could start when the electric current was under 1 000 A. However,as the current increased to 1 800 A,a "fast-acting fuse"alarm was registered,with one fast-acting fuse blown out,followed by abnormal sound of the motor. An investigation was made and the rectifier panel and the main drive system were checked. The wave forms of both primary and secondary sides of the panel were measured.Judging from the wave aberration,the 6 RA70 digital speed regulating device was found to be broken,as the pulses distributed to the six sets of thyristors were uneven. Consequently the thyristors were unable to change phases normally,and the DC EMF and AC voltage were in series aiding,forming a short circuit,which blew out the fast-acting fuse.

关 键 词：快速熔断器 整流柜 脉冲 

分 类 号：TD633[矿业工程—矿山机电]