大容量电机起动电压质量控制方式研究  

作　　者：刘鹏祥[1] 

机构地区：[1]广东电网公司佛山顺德供电局,广东佛山528300

出　　处：《黑龙江科技信息》2014年第2期17-18,共2页Heilongjiang Science and Technology Information

摘　　要：大容量交流异步电动机(9300kW)直接起动时能产生很大的冲击电流,导致线路电压明显下降。尤其是处于长线路末端的大容量电机,因线路压降大,电机起动时对线路电压的影响更为明显,从而其他用户负载的正常运作,产生的高次谐波甚至会危及电网安全。为控制线路电压质量,一般运用软启动装置实现大电机的起动。以大容量电机(9300kW)实例计算作电机起动时的电压控制方式简要分析研究。There will be a big impact current while high-capacity asynchronous motor （9300kW） starts directly,and it brings some problems like obviouse under-voltage.Specially, if the high-capacity asynchronous motor installed at the end of a long 10kV power line, when the motor starts it will make the power line voltage even lower due to the high voltage drop,and it＆#39;s negative to other power users on the same power line.Also,the high order harmonic component it produces can do big harm to the power grid.In order to control the voltage of power line well,we usually use a soft starter to help a high_capacity asynchronous motor starts.In this paper,we take 9000kW-capacity asynchronous motor as an example to analyze and research a way of its starting voltage control.

关 键 词：电机起动 电压质量 

分 类 号：TM320.6[电气工程—电机]