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ALTERNATING CURRENT ELECTRIC RAILROAD POWER SYSTEM USING EMTDC, AND ANALYSIS METHOD THEREOF INCLUDING AUTOMATIC TRANSFORMER SIMULATION STEP
ALTERNATING CURRENT ELECTRIC RAILROAD POWER SYSTEM USING EMTDC, AND ANALYSIS METHOD THEREOF INCLUDING AUTOMATIC TRANSFORMER SIMULATION STEP
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机译:使用EMDCD的交流电铁路电力系统及其分析方法,包括自动变压器仿真步骤
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摘要
PURPOSE: An alternating current electric railroad power system and an analysis method thereof are provided to analyze harmonics, voltage drop, voltage unbalance, and faults by using a user defined model of an EMTDC program. CONSTITUTION: An alternating current electric railroad power system analysis method comprises an automatic transformer simulation process of obtaining a primary voltage between a catenary and a feeder, a secondary voltage between a catenary and a rail, and a loop current of an automatic transformer. The automatic transformer simulation process includes a first step of defining a primitive impedance matrix and a loop incidence matrix; a second step of obtaining a loop voltage vector and a loop impedance matrix from the first step; a third step of obtaining a loop voltage equation from the second step; a fourth step of obtaining a loop current equation by using a condition where currents flowing along two windings of the automatic transformer have the same size and different directions; a fifth step of obtaining a simultaneous equation by combining the loop voltage equation obtained in the third step and the loop current equation obtained in the fourth step; and a sixth step of solving the simultaneous equation obtained in the fifth step.
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