大连地铁投运对电网侧电能质量的影响

Analysis of Dalian Metro's Impact on Grid-side Power Quality and Solutions

结合大连地铁1号、2号线工程实际情况,应用ETAP电力系统仿真软件搭建供电网模型,分析了正常运行方式、单台线变组解列、整座变电站解列三种运行方式,提出了滤波方案和无功补偿建议,评估了大连地铁1号、2号线投运初、远期对电网侧电能质量的影响,与国内已投运地铁实测值进行比较,确认分析结果是正确的。

Combined with the actual situation of Dalian metro linel and line2, power supply network model by using ETAP power sys-tem simulation software is set up. Analysis on three possible operation modes is made, e. g. normal operation mode, single, line- transformer group splits the system and entire substation islanding. This paper gives filter schemes and suggestions of reactive power compensation for reference. And estimates impact on grid-side power quality after metro linel and line2 put into operation and com- pares it with the actual values of other operated metro system, it confirms that the result is correct.