Measured Data-based Case Analysis of Power Quality Characteristics of Urban Railway
Compared with other railways like high-speed railways,traction power supply systems of urban railways subject to harsh working conditions,including high vehicle density,fast speed,and short inter-station distance,and therefore suffer more serious problems such as voltage unbalance,voltage deviation,and harmonics.Aiming at exploring supply quality characteristics of urban railway traction,this work performed comprehensive test on a typical case of urban railway traction substation.It then carried out quantitative assessment with respect to important power quality indexes,including voltage imbalance,voltage deviation,harmonics,and three-phase voltage imbalance,according to the relevant national standards.
power supply quality assessmenturban railwayvoltage deviationharmonics