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Analytical Response of Synchronous Generators during Load Rejection and Field Short-circuit Tests

机译：同步发电机在甩负荷和短路测试中的分析响应

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摘要

In a recent work, the authors developed what they called a numerical hybrid state model and used it to predict the performance of a saturated synchronous generator during load rejection tests. The stale matrices were presented in compact numerical form and may prove tedious to implement for a given application. Therefore, the purpose of the present article is to derive these matrices in terms of the generator's physical parameters using symbolic software. For direct and easy computation of the model output variables, time-variant analytical waveforms of the phase voltages and the field current following a generator tripping (load rejection) and an open stator field short-circuit are also developed in terms of the generator parameters using the state model solution of the linear control systems theory. Two full-load rejection tests, one with an inductive load, other with a capacitive load and a standard field short-circuit test with the stator in open circuit are performed. Comparisons are made between the simulation results and actual data obtained from a laboratory machine to assess the suitability and effectiveness of the proposed synchronous generator framework analysis.
机译：在最近的工作中，作者开发了他们所谓的数值混合状态模型，并用它来预测在负载抑制测试期间饱和同步发电机的性能。陈旧的矩阵以紧凑的数值形式表示，对于给定的应用而言，实现起来可能很繁琐。因此，本文的目的是使用符号软件根据生成器的物理参数导出这些矩阵。为了直接轻松地计算模型输出变量，还根据发电机参数，使用发电机参数，开发了发电机跳闸（甩负荷）和定子开路短路后的相电压和励磁电流的时变分析波形。线性控制系统理论的状态模型解。进行了两个满载抑制测试，一个带有感性负载，另一个带有容性负载，并且在定子处于开路状态下进行了标准的现场短路测试。将仿真结果与从实验室机器获得的实际数据进行比较，以评估所提出的同步发电机框架分析的适用性和有效性。

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