论文标题
探索具有凸内部近似的风电场收集器网络上的反应性限制
Exploring reactive power limits on wind farm collector networks with convex inner approximations
论文作者
论文摘要
风电场可以在子越过和传输总线上提供反应力，以支持和改善电压轮廓。将风电场的反应能力能力评估为单个涡轮额定值的总和是很常见的。但是，这样的评估没有考虑到收集器网络上的损失，也没有考虑到涡轮机和网络所施加的电压约束。相比之下，本文提出了一种确定每个涡轮机可以提供的反应性功率支撑范围的方法，同时保证了对电压约束的满意度。这是通过构造非凸vEX的凸内部近似值来实现的。我们提出了支持约束满意度保证的理论分析。一个示例说明了算法的有效性，并与完全分散的控制风电场反应能力进行了比较。这种方法有可能改善风电场收集器网络的设计和运行，从而减少了对额外昂贵的反应能力资源的需求。
A wind farm can provide reactive power at sub-transmission and transmission buses in order to support and improve voltage profiles. It is common for the reactive power capability of a wind farm to be evaluated as the sum of the individual turbine ratings. However, such an assessment does not take into account losses over the collector network, nor the voltage constraints imposed by the turbines and network. In contrast, the paper presents a method for determining the range of reactive power support that each turbine can provide whilst guaranteeing satisfaction of voltage constraints. This is achieved by constructing convex inner approximations of the non-convex set of admissible reactive power injections. We present theoretical analysis that supports the constraint satisfaction guarantees. An example illustrates the effectiveness of the algorithm and provides a comparison with a fully decentralized approach to controlling wind farm reactive power. Such approaches have the potential to improve the design and operation of wind farm collector networks, reducing the need for additional costly reactive power resources.
