弱电网条件下客货混跑铁路供电品质综合测试与治理  

Comprehensive Test and Treatment of Power Supply Quality of Passenger and Cargo Mixed Railway Under the Condition of Weak Power Grid

作　　者：牛梦宇 NIU Mengyu(China Railway Eryuan Engineering Group Co.,Ltd.,Chongqing 400023,China)

机构地区：[1]中铁二院重庆勘察设计研究有限责任公司,重庆400023

出　　处：《电工技术》2022年第4期167-169,共3页Electric Engineering

摘　　要：随着以西部铁路为代表的弱电网条件下电气化铁路的开通运行,因系统短路容量较小带来的电能质量问题日益凸显,已经严重影响铁路线路的安全稳定运行。同时,西部线路多为客货混跑线路,运行工况复杂,这对牵引供电系统与外部电源的适配性提出更高要求。因此,以某典型线路为例开展供电品质综合测试;基于国家相关标准,对电压不平衡度、电压偏差等电能质量指标进行定量评估分析;针对存在的问题给出治理方案,仿真验证方案的可行性,为弱电网条件下客货混跑线路牵引变电所的运维提供必要参考。With the operation of electrified railway under the condition of weak power network represented by Western Railway,the power quality problems caused by small system short-circuit capacity have become increasingly prominent,which has seriously affected the safe and stable operation of railway lines.At the same time,most of the Western lines are mixed passenger and freight lines,and the operation conditions are complex,which puts forward higher requirements for the adaptability between the traction power supply system and external power supply.Therefore,taking a typical line as an example,the comprehensive test of power supply quality is carried out.Based on the relevant national standards,the power quality indexes such as voltage imbalance and voltage deviation are quantitatively evaluated and analyzed.According to the existing problems,the treatment scheme is given,and the feasibility of the scheme is verified by simulation,which provides a necessary reference for the operation and maintenance of traction substation of mixed passenger and freight line under the condition of weak current network.

关 键 词：供电品质测试 客货混跑线路 三相电压不平衡度 电压偏差 

分 类 号：TM732[电气工程—电力系统及自动化]