摘要
当城市轨交列车开始调试运行时,有功电量变化波动不大,大量的无功功率注入电网,导致功率因数偏低。介绍和分析了杭州轨交1号线在调试期间出现无功功率过剩、功率因数超前且偏低的原因;提出了采取停用部分备用线路、降低电缆充电功率发生的技术措施。通过仿真计算,验证了该方案的有效性。
When trains of urban rail transit start the commissioning,active power fluctuates slightly and large amounts of passive power go to power grid,thus causing a rather low power factor.This article introduces and analyzes the reasons for excessive passive power and leading and rather low power factor during the commissioning of Hangzhou Metro Line 1;it proposes the technical measure of deactivating some spare lines to reduce charging power of electric cables.The effectiveness of this scheme is demonstrated through simulation calculation.
出处
《地下工程与隧道》
2014年第2期32-34,61,共3页
Underground Engineering and Tunnels
