CAJ | 학술논문

针对日益增多的同塔双回输电线路在不换位条件下出现的电流不平衡问题进行了机理研究和建模仿真. 给出了同塔双回输电线路各导体之间的电感矩阵,列出了各相导体之间的电磁方程,并采用MATLAB数值计算方法对该电磁方程进行求解. 采用PSCAD/EMTDC对同塔双回输电线进行仿真建模,仿真结果与理论计算均表明,逆序排列能够有效降低线路参数的不平衡度.
침대일익증다적동탑쌍회수전선로재불환위조건하출현적전류불평형문제진행료궤리연구화건모방진. 급출료동탑쌍회수전선로각도체지간적전감구진,렬출료각상도체지간적전자방정,병채용MATLAB수치계산방법대해전자방정진행구해. 채용PSCAD/EMTDC대동탑쌍회수전선진행방진건모,방진결과여이론계산균표명,역서배렬능구유효강저선로삼수적불평형도.
Unbalanced phase current appears in double -circuit transmission lines on the same tower without transposition , so mechanism research and modeling simulation are carried out to study this phenomenon .Inductor model of each conductor is established to obtain the inductance matrix of the electromagnetic equation .Numerical calculation by MATLAB is done to solve the electromagnetic equation and PSCAD model of double -circuit transmission lines on the same tower is established for simu-lation.Simulation result and theoretical calculation show that the inverse arrangement of transmission lines can obviously de -crease the unbalance degree .