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An optimization-based approach for load modelling dependent voltage stability analysis

机译:基于优化的基于负载建模的电压稳定性分析方法

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摘要

A voltage stability index that considers voltage dependent load models is proposed in this paper for the detection of critical buses. The proposed index uses sensitivities provided from the solution of the maximum loadability problem based on an optimization model, to evaluate the voltage stability condition of power system under stress conditions caused by bus loading. The proposed index provides an accurate indication of voltage stability, by considering the difference between the maximum power transfer point and maximum loadability point using voltage dependent loads such as ZIP and exponential models. Validation tests carried out in a two-bus and the IEEE 30-bus test systems show an adequate response of the proposed approach. In first power system, the proposed index is compared to other indices and methods for voltage stability analysis, including L-index and modal analysis. Finally in the last power system, the proposed index is additional compared the extended L-index GEM.
机译:本文提出了一种考虑电压依赖负载模型的电压稳定指数,用于检测关键母线。提出的指标使用基于优化模型的最大负载能力问题解决方案提供的灵敏度,来评估在母线负载引起的应力条件下电力系统的电压稳定条件。通过使用电压依赖性负载(例如ZIP和指数模型)考虑最大功率传输点和最大负载点之间的差异,提出的指标可提供电压稳定性的准确指示。在两总线和IEEE 30总线测试系统中进行的验证测试表明,该方法具有足够的响应能力。在第一电力系统中,将提出的指标与其他指标和电压稳定性分析方法进行比较,包括L指标和模态分析。最后,在最后一个电力系统中,与扩展的L指数GEM相比,建议的指数是额外的。

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