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Evaluation of the maximum loadability point of power systems considering the effect of static load models

机译:考虑静态负荷模型影响的电力系统最大负荷点评估

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Power system stability is an important problem for power system operation. Determination of different stability margins can result in the optimum utilization of power system with minimum risk. Voltage stability is an important subset of power system stability. To correctly analyze the voltage stability of a power system, suitable dynamic models are usually required. However, static analysis tools can give us useful information about long term voltage stability. Especially, maximum loadability point (MLP) of a power system can be effectively estimated by modal analysis of load flow Jacobians. MLP is one of the important boundaries of voltage stability feasible region that loading beyond which is of little practical meaning. In this paper, MLP boundary of power system is analyzed by means of static analysis tools and its differences with the other boundaries of voltage stability, like saddle node bifurcation, are discussed. Effect of reactive power limits of generators and different static load models on the MLP border is also evaluated.
机译:电力系统的稳定性是电力系统运行的重要问题。确定不同的稳定裕度可以以最小的风险实现电力系统的最佳利用。电压稳定性是电力系统稳定性的重要子集。为了正确地分析电力系统的电压稳定性,通常需要合适的动态模型。但是,静态分析工具可以为我们提供有关长期电压稳定性的有用信息。尤其是,可以通过对潮流雅可比模型进行模态分析来有效地估计电力系统的最大负荷点(MLP)。 MLP是电压稳定可行区域的重要边界之一,超过该极限负载几乎没有实际意义。本文利用静态分析工具对电力系统的MLP边界进行了分析,并讨论了其与电压稳定性其他边界(如鞍形节点分叉)的区别。还评估了发电机的无功功率限制和不同的静态负载模型对MLP边界的影响。

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