光伏发电在地铁牵引供电系统中的应用研究

Ｒesearch on Application of Photovoltaic Power Generation to Metro Traction Power Supply System

摘要:

地铁作为城市轨道交通的重要组成部分，在乌鲁木齐市未来的城市发展道路上不可或缺，蓬勃发展的地铁建 设事业必将增大城市电力供应需求，为城市供电带来巨大挑战。乌鲁木齐市太阳能资源丰富，若能将光伏发电应用 于地铁牵引供电系统，可以有效减少城市供电压力，降低地铁运营成本。因此，提出将光伏电站接入地铁牵引供电系 统中，由光伏发电提供部分地铁牵引电能。为验证设想的有效性，基于 MATLAB/ Simulink 构建了 1 MW 光伏电站接 入地铁牵引供电系统的仿真模型，通过观察光伏电站经过逆变器后的输出电能的谐波大小判断光伏电站是否满足并 网条件。仿真结果表明，经过逆变器后的光伏发电站输出的电能谐波满足并网要求，验证了光伏电站接入地铁牵引 供电系统这一方法的可行性。

Abstract:

As an important part of urban mass transit，the metro in Urumqi is indispensable to the future development the city， and the booming metro construction will be bound to increase the demand of urban power supply． Urumqi has abundant solar energy resources． If photovoltaic power generation can be applied to metro traction power supply system，it can effectively reduce the pressure of urban power supply as well as the operation cost of subway． Therefore，it is proposed to connect the photovoltaic power station to the metro traction power supply system． To verify the validity of this idea，based on MATLAB/ Simulink，a 1 MW photovoltaic power station is constructed to be connected to the simulation model of metro traction power supply system，which judges whether photovoltaic power station meets the requirements of grid connection by analyzing the harmonic of the output power through the inverter． The simulation results in MATLAB/ Simulink show that it is feasible to connect the photovoltaic power station to the metro traction power supply system．