基于交流潮流模型的电网供电能力评价算法

提出了扩展的具有变量范围约束的交流潮流模型及其求解方法，可以考虑对节点电压、有功和无功注入功率以及对支路潮流的变动范围约束。在此基础上提出了基于交流潮流模型的电网供电能力评价算法，不仅满足节点功率平衡方程，而且满足对节点电压、有功和无功注入功率以及对支路潮流的变动范围约束，可以更准确地分析电网对负荷变化的适应性及供电能力，找出制约电网供电能力的原因。给出了计算实例。

Algorithm for Evaluating Power Supply Capability of Power System Based on AC Power Flow Model

Expanded AC Power flow model which considering the constraints of changin grange of variables and the calculation method to solve the model are developed, in which the constraints of changing range of variables, such as node voltage, active and reactiveinjected power, and branch power flow, can be considered. Based on the expanded AC power flow model an algorithm for evaluating power supply capability of power system is developed. It meets not only the node power balance equations, but also the constraints of changing range of the node voltage, and the active and reactive injected power, and the branch power flow. So it can be used for analyzing the suitability to power load changing and power supply capability of power system more accurately and finding the reasons to restrict the load supply capability of the system. Case studies are provided which are calculated by the computer program using the new algorithm developed in the paper.