配电网电压控制的分布式光伏无功仿射可调鲁棒优化方法

随着高比例分布式光伏发电并网引发的配电网电压波动越限问题,提出基于仿射可调鲁棒优化的分布式光伏无功功率调节方法.首先,通过建立以配电网有功网损和节点电压偏差最小化的综合优化模型,采用多面体线性化方法将综合优化模型转化为二次规划模型.然后,在考虑分布式光伏有功出力预算不确定性集的基础上,通过对偶变换将鲁棒优化模型转化为确...

Distributed photovoltaic reactive power affine adjustable robust optimization methodfor voltage control of a distribution network

The high proportion of distributed PV generation connected to a distribution network results in a nodal voltage over limit problem. Thus a distributed PV reactive power regulation method based on affine adjustable robust optimization is proposed in this paper. First, a comprehensive optimization model is established to minimize the active power loss and nodal voltage deviation of the distribution network, and the polyhedral linearization method is used to transform the comprehensive optimization model into a quadratic programming model. Then, considering the budget of uncertainty of active power of distributed PV, the robust optimization model is transformed into a deterministic quadratic programming model through dual transformation. The simulation results on IEEE-33 and IEEE-123 buses distribution systems with high proportion of distributed PV show that, compared with zero reactive power regulation of distributed PV, the proposed affine adjustable robust optimization method can greatly improve the optimization results of network loss and nodal voltage over that of the traditional robust optimization method and has lower conservatism, which is closest to the results of Monte Carlo simulation.This work is supported by the Science and Technology Plan Project of Hebei Province (No. 19212102D) and the Science and Technology Project of State Grid Hebei Electric Power Co., Ltd. (No. kj2020-049).