CAJ | 학술논문

为研究高速列车与AT供电系统之间电气耦合（简称车网耦合）引起的谐波谐振，构建了基于节点导纳方程的高速铁路AT供电系统数学模型和基于高速列车功率源特性以及等效阻抗的谐波源模型，提出了基于车网耦合的高速铁路AT供电系统谐波谐振评估算法，研究了3种AT供电模式、3种AT牵引网运行方式以及不同AT变压器漏感大小对系统谐振特性的影响，分析了系统阻频特性与相频特性，指出并联和串联谐振点及其变化规律。仿真分析表明：列车位于不同AT段时3种AT供电模式下并联谐振点和串联谐振点均存在差异，牵引供电系统运行方式的多变性也造成了串联和并联谐振点的偏移，AT漏抗越大则谐振点数目越多而第1个串联谐振点频率越低。
위연구고속열차여AT공전계통지간전기우합（간칭차망우합）인기적해파해진，구건료기우절점도납방정적고속철로AT공전계통수학모형화기우고속열차공솔원특성이급등효조항적해파원모형，제출료기우차망우합적고속철로AT공전계통해파해진평고산법，연구료3충AT공전모식、3충AT견인망운행방식이급불동AT변압기루감대소대계통해진특성적영향，분석료계통조빈특성여상빈특성，지출병련화천련해진점급기변화규률。방진분석표명：열차위우불동AT단시3충AT공전모식하병련해진점화천련해진점균존재차이，견인공전계통운행방식적다변성야조성료천련화병련해진점적편이，AT루항월대칙해진점수목월다이제1개천련해진점빈솔월저。
To study the harmonic resonance caused by the electrical coupling between high speed train and AT power supply system,a mathematic model of AT power supply system of high speed railway based on nodal admittance equation and a harmonic model of high speed train based on the power source characteristic and the equivalent impedance were built. The evaluation algorithm for the harmonic resonance of AT power supply system of high speed railway based on train-network coupling was propsed. The effect on the harmonic resonance of three AT models,three traction network operation modes and different leakage impedances were discussed,and their impedance-frequency and phase-frequency characteristics were analyzed. The variation rules of parallel and series resonant points were summarized. Simulation results show that three AT modes have different parallel and series resonant points,and different power supply models lead to the shift of resonant points. The increasing of AT transformer leakage resistance causes more resonance points and lower frequency at first series resonant point.