基于安全域的电力系统有功及无功优化

提出了一种同时计及电力系统有功及无功的新型优化潮流模型与算法。在构建优化潮流(OPF)的数学模型时借助了3种电力系统安全域的概念与方法,它们分别是:满足系统潮流约束(母线电压约束、支路热稳定极限以及发电机出力限制)的“静态安全域”、“静态电压稳定域”以及针对既定的网络结构和既定的网络结构变化过程的保证系统暂态稳定性的“动态安全域”。在此基础上,利用电力系统的有功功率与支路角之间、无功功率与节点电压幅值之间的仿射关系,建立了通过二次规划来求解优化潮流(OPF)的算法。文中最后在新英格兰10机39节点系统中演示了所提出算法的有效性。

Security Region Based Real and Reactive Power Optimization of Power Systems

An approach is presented to optimize real and reactive power in power system. In order to develop the proposed model of optimal power flow (OPF),the concepts of static security regions which is defined as the set of consisting of all injection points that satisfy the power flow constraints (bus voltage constraints of nodes and branch thermal limit constraints and generating limits),static voltage stability region,and dynamic security region to guarantee the transient stability constraints for a certain network configuration or a certain changing process of network configuration are included into the OPF formulation. The properties of affine mapping between branches angles and real power,voltage magnitudes of buses and reactive power injections in network are used. The quadratic optimization is used to solve the OPF. The 10 machine 39 bus New England system is used to show the effectiveness of the proposed algorithm.