基于四端E-SOP的有源配电网运行效率优化

柔性软开关SOPs(soft open points)通过准确控制换流器有功功率交换,提供了现有配电自动化体系所不具备的实时精细潮流调节优化能力。为了解决SOP对有源配电网运行效率的优化成效问题,本文首先建立了带有储能装置的四端SOP即E-SOP(SOP with energy storage)的接入拓扑和数学模型,考虑了四端E-SOP换流器和直流侧储能装置的运行约束。其次,建立了基于四端E-SOP的有源配电网运行效率优化模型。然后,利用半定规划方法对模型进行了线性化求解。最后,通过算例验证了所提方法的有效性和实用性。

Operating Efficiency Optimization for Active Distribution Network Based on Fourterminal E-SOPs

Through accurately controlling the active power exchange in a converter,soft open points(SOPs)provide a real-time fine power flow optimization capability,which is not equipped with the existing power distribution automation system.To solve the problem of the optimization effects of SOPs on the operating efficiency of active distribution net work,the topology and mathematical model of four-terminal SOPs with energy storage(E-SOPs)are established at first,considering the operating constraints on the four-terminal E-SOP converter and the DC-side energy storage devic es.Then,an operating efficiency optimization model of active distribution network is built based on the four-terminal ESOPs,which is further linearized and solved by means of semi-definite programming.Finally,the effectiveness and ap plicability of the proposed method are verified through a case study.