基于二阶段鲁棒优化模型的混合交直流配电网无功电压控制策略研究

Research on Reactive Power Voltage Control Strategy for Hybrid AC/DC Distribution Network Based on Two-stage Robust Optimization Model

交直流配电网(AC/DC distribution network,HADDN)作为主动配电网迅速发展的重要分支,其关键技术之一是以无功电压控制为核心的优化运行技术。该文提出一种基于二阶段鲁棒优化模型的混合HADDN无功电压控制方法,该方法可有效协调传统无功电压设备和交/直流变流站,寻求鲁棒最优的协调控制方案,有效应对可再生能源的不确定性。此外,由于所提模型属于一种双层规划问题,该文采用列约束生成解耦算法,并由Matlab平台调用商业求解器实现求解,保证了模型求解的快速性和有效性。最后,通过改进的IEEE33节点混合HADDN算例分析,结果表明本中所提方法可有效降低系统运行成本,并能维持系统电压在规定范围内,与传统无功电压控制方法相比具有明显优势。

As a significant branch of the active distribution network(ADN), AC/DC distribution network(HADDN) is one of the key technologies, which is an optimal operation technology with reactive voltage control as the core. In this paper, a novel reactive voltage control method based on two-stage robust optimization model was proposed. This method can effectively coordinate the conventional reactive voltage devices and AC/DC converter stations to look for the robust optimal coordinated control scheme, and effectively cope with the uncertainty of renewable energy. In addition,since the proposed model is a double-layer programming problem, the column constraint generation decoupling algorithm(CCGDA) was adopted in this paper, and the Matlab platform calls the commercial solvers to achieve the solution,which can be solved quickly and effectively. Finally, through the modified IEEE 33-node hybrid AC/DC power distribution network numerical analysis, show that the proposed method can effectively reduce the system operation costs, maintain system voltage within the prescribed scope, compared with the conventional reactive voltage control method has great advantage.