牵引变电所电能质量分析及治理措施探讨

摘要

After the 110 kV Qinjiazhuang Traction Substation of Ninglang Line was put into operation, the quality of the electric energy linked up to the system substation was measured.As the result, the 3, 5, and 21 harmonic currents injected into the system do not meet the requirements of national standards.After the Qingjiazhuang traction substation was put into operation, the superior power source of Qingjiazhuang traction substation could not meet the national standard requirements in terms of the three-phase voltage unbalance and voltage total harmonic distortion rate.Based on the analysis of monitoring results of the electric energy in the Qingjiazhuang traction substation, the influence of Qingjiazhuang traction substation on electric energy quality of power grid was discussed and the management suggestions were proposed.%宁岢线110kV秦家庄牵引变电所投运后, 对接入系统变电站的电能质量进行测试, 结果显示注入系统的3、5、21次谐波电流不满足国家标准要求, 其上级电源宋家寨变电站110kV母线的三相电压不平衡度、电压总谐波畸变率也不满足国家标准要求.为此通过对秦家庄牵引变电所电能质量监测结果进行分析, 探讨秦家庄牵引变电所对电网电能质量的影响情况, 并提出治理建议.