Voltage regulation algorithms for multiphase power distribution grids
Voltage regulation algorithms for multiphase power distribution grids
复制标题
多相配电网的电压调节算法
DOI：
10.1109/tpwrs.2015.2493520
复制
发表时间：
2015
期刊：
影响因子：
--
通讯作者：
R. Baldick
中科院分区：
文献类型：
--
作者：
V. Kekatos;Liang Zhang;G. Giannakis;R. Baldick
时变的可再生能源发电可能会导致未来配电网出现严重的欠压/过压状况。利用分布式发电机组的无功功率能力增强传统公用事业公司拥有的调压设备是一种可行的解决方案。本地控制选项以快速收敛速度实现全局电压调节最优是这里的目标。在此背景下，在统一的线性化电网模型下分析了新颖的无功功率控制规则。对于单相电网，我们的近端梯度方案的计算复杂度与 IEEE 1547.8 标准建议的规则相当，但它具有良好的收敛保证。此外，向该方案添加内存会加速收敛。对于三相电网，研究表明无功功率注入对跨相母线电压幅度具有反直觉的影响。然而，当我们的控制方案应用于不平衡条件时，它显示达到平衡点。使用 IEEE 13 总线、IEEE 123 总线和可再生能源渗透率提高的南加州爱迪生 47 总线馈线进行的数值测试验证了该方案的属性及其对电网拓扑重新配置的弹性。
Time-varying renewable energy generation can result in serious under-/over-voltage conditions in future distribution grids. Augmenting conventional utility-owned voltage regulating equipment with the reactive power capabilities of distributed generation units is a viable solution. Local control options attaining global voltage regulation optimality at fast convergence rates is the goal here. In this context, novel reactive power control rules are analyzed under a unifying linearized grid model. For single-phase grids, our proximal gradient scheme has computational complexity comparable to that of the rule suggested by the IEEE 1547.8 standard, but it enjoys well-characterized convergence guarantees. Furthermore, adding memory to the scheme results in accelerated convergence. For three-phase grids, it is shown that reactive power injections have a counter-intuitive effect on bus voltage magnitudes across phases. Nevertheless, when our control scheme is applied to unbalanced conditions, it is shown to reach an equilibrium point. Numerical tests using the IEEE 13-bus, the IEEE 123-bus, and a Southern California Edison 47-bus feeder with increased renewable penetration verify the properties of the schemes and their resiliency to grid topology reconfigurations.