【摘要】 应用分布参数理论，研究直流架线电网漏电保护问题，建立了架线电网的数学模型。分析了保护装置在架线电网各种绝缘状态下人身触电时的有效保护长度，得出了线路电气长度在测量电压波长λ／８处即出现死区，并提出了在保护装置出口处接入感性补偿阻抗（其最佳阻抗值）即可消灭保护死区，通过现场工业试验，试验数据与理论计算完全一致。更多还原

【Abstract】 Distribution parameter theory is applied to study earth leakage protection of DC trolley network and a mathematic model of trolley network is established. The effective length of the protections in the network against electric shock under different insulation conditions is analyzed. And a dead space is found at a place of λ/8.To eliminate the dead spot, it is necessary to connect a compensation impedance with an optimal impedance of at the outlet of protection. The test data is in conformity with the calculated data based on the commercial test.更多还原