高速铁路牵引负荷对电力系统的影响研究

Research on the effects of high-speed railway traction load on the power system

电气化铁路会给电力系统带来电能质量问题,武广高速铁路投运后,将对广州电力系统产生影响。结合广州段某单相接线牵引供电系统运行情况,分析牵引负荷功率的冲击性和牵引供电电流的不平衡特性,并简要分析供电系统对牵引负荷的承受能力。通过对牵引供电系统实际运行数据的分析,从电能质量相关数据指标上评价了牵引负荷对电力系统的影响,得出目前最大的电能质量问题是电流的三相不平衡问题。指出需要铁路和电力部门在规划建设及运行方面密切配合,共同确保电网安全可靠和供电质量。

Since the traction load of electrical train will affect the power quality, Wuhan-Guangzhou high-speed railway exerts certain influence on Guangzhou power grid. On the basis of describing a single-phase traction power supply system for the Wuhan-Guangzhou high-speed railway Guangzhou section, the shock performance of traction load and imbalance characteristics of load current are analyzed, and the ability of power system to withstand the traction load is also briefly analyzed. According to the analysis of traction power supply system＇s operation data, the effects of traction load on the power system are evaluated using the related power quality indicators. The research shows that the most outstanding factor worsening power quality is three-phase imbalance current. The close coordination between railway and electricity sectors is necessary for the high-speed railway program and operation to ensure the reliability and quality of power supply.