Investigation on Power Supply Capability and Power Quality of Dazhun Railway
In order to investigate the power supply capability,the harmonics,the power factor and the three-phase voltage unbalance factor of the Dazhun Railway,seven substations of the Dazhun Railway were measured and analyzed.The test data show that the current in the contact network is far less than 1500A,but the maximum voltage of the power supply arms are close to or exceed 29kV; the third,fifth,seventh,ninth,eleventh,thirteenth low order harmonics and 31th,33th,35th,37th,39th,41th high order harmonics of the traction substations are beyond the Chinese national standards; the power factor of phase voltage in Dahongcheng is 0.837,the power factor of phase in Fengou is 0.251,the power factor of phase in Shudigou is 0.521,and the power factor of other substations is higher than 0.9; the three-phase voltage unbalance factor is higher than 2%in all substations.The analysis shows that the current load condition of Dazhun Railway has reached or approached the limit of power supply capacity.The harmonic content and the three-phase voltage unbalance factor in power quality are beyond the national standard,so it is necessary to reform the traction power supply system of Dazhun Railway.
Zhi-XIao WANG Fu-Qiang TIAN
School of Electrical Engineering,Beijing Jiaotong University,Beijing,China
国际会议
上海
英文
264-269
2017-12-30（万方平台首次上网日期，不代表论文的发表时间）