基于泰勒级数的PV曲线求取及参变量选择分析

发布时间：2018-05-23 15:03

本文选题：PV曲线 + 泰勒级数　；参考：《电网技术》2017年04期

【摘要】：PV曲线是电力系统静态电压稳定分析的重要工具。应用泰勒级数法可快速求取计及无功约束时的PV曲线。针对以往文献在以功率参量为参变量时,泰勒级数在电压稳定临界点处不收敛的问题,研究了应用泰勒级数解决电压稳定问题时参变量的选择方法,证明了以电压模为参变量的可行性。推导了PV节点无功约束量关于功率参变量的泰勒解析式,由此可根据无功上限来预测无功越界时的系统功率参数值。建立了PQ节点有功功率关于电压模的泰勒级数,根据解析关系式可直接绘制负荷节点的PV曲线。最后通过对IEEE 30节点系统仿真验证了所提方法具有较快的计算速度和较高的计算精度。
[Abstract]:PV curve is an important tool for static voltage stability analysis of power system. By using Taylor series method, PV curves with reactive power constraints can be obtained quickly. Aiming at the problem that the Taylor series does not converge at the critical point of voltage stability when the power parameter is taken as the parameter in the previous literature, this paper studies the method of selecting the parameter when the Taylor series is used to solve the voltage stability problem. The feasibility of taking voltage mode as parameter is proved. In this paper, the Taylor analytic formula of the reactive power constraint of PV node on power parameter variables is derived, which can be used to predict the system power parameters when reactive power is over the boundary according to the upper limit of reactive power. The Taylor series of the active power of PQ node with respect to the voltage mode is established, and the PV curve of the load node can be drawn directly according to the analytical relation. Finally, the simulation of IEEE 30 bus system shows that the proposed method has higher calculation speed and higher accuracy.
【作者单位】：湖南大学电气与信息工程学院;
【基金】：国家自然科学基金项目(51577053)~~
【分类号】：TM712

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