Three phase load flow program
Three phase load flow program
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三相潮流方案
DOI：
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发表时间：
1976
期刊：
影响因子：
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通讯作者：
A. El
中科院分区：
文献类型：
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作者：
K. Birt;J.J. Graffy;J. McDonald;A. El
本文描述了一个通用的三相潮流程序，用于在所有可能的不平衡条件下对任何输电网络进行稳态分析，例如未换位的超高压线路、单相负载、单极开关等。通过使用相位和对称分量量，程序用户可以轻松地进行输入数据准备和输出数据解释；然而，潮流问题的公式和求解都是按相量（A、B、C）完成的。求解方法是牛顿-拉夫森法，使用最优顺序三角分解来利用网络方程的稀疏性。该程序有几个新功能来模拟电力系统的真实三相运行和不平衡条件。例如，发电机的内部感应电压是平衡的，而发电机端电压则取决于内部机器阻抗和机器电流的不平衡。此外，根据电压测量的实际设计，模拟电压调节器的稳态性能以保持机器端子相电压的某些功能恒定。该程序的另一个特点是它可以处理高压传输网络中使用的所有具有两个或三个绕组的常见变压器连接。
The paper describes a general three phase load flow program developed for the steady state analysis of any electric transmission network under all possible imbalance conditions such as untransposed EHV lines, single phase loading, single pole switching, etc. Input data preparation and output data interpretation are made easy for program users by using both phase and symmetrical components quantities; however, the load flow problem formulation and solution are all done in phase quantities (A, B, C). The method of solution is the Newton-Raphson method, using optimally ordered triangular factorization to take advantage of the sparsity of network equations. The program has several new features to simulate real three phase operation of power systems and imbalance conditions. For example, the internal induced voltages of generators are balanced, while generator terminal voltages depend on internal machine impedances and the imbalance in machine currents. Also, the steady state performance of the voltage regulator is simulated to maintain some function of the machine terminal phase voltages constant, depending on the actual design of the voltage measurement. Another feature of the program is that it can handle all common transformer connections having two or three windings that are used in HV transmission networks.