摘要
电气化铁路作为电力系统的一个特殊用户,其负荷具有非线性、不对称和波动性的特点。该文以斯考特变压器的供电系统为例,分析了注入系统的不平衡谐波,介绍了其对电力系统的危害,并提出了一些应对措施;针对电铁负荷功率因数较低的现象,分析了无功补偿的必要性以及目前存在的问题和解决措施。通过分析表明可以把电铁对电力系统的影响降到最低。
Electrified railway is a special consummer of electric power system,its load is of nonlinear,asymmetry and fluctuation. Taking power supply of Scott transformer as an example,this paper analyzes the unbalanced harmonic of inputting electric power system,explains its impairment on electric power system, and presents a series of countermeasures. Based on the lower load power factors of electrified railway, it expounds the necessity of reactive power compensation, existing problems, and relevant countermeasures. Detailed analysis shows that the negative effects of electrified railway on power system can be reduced greatly.
出处
《继电器》
CSCD
北大核心
2004年第11期33-36,共4页
Relay
关键词
电气化铁路
牵引变电站
电力系统
功率因数
牵引变压器
electrified railway
electric power system
unbalanced harmonic
reactive power compensation
