基于可控负荷的智能电网电压频率多目标优化控制

近年来分布式电源不断接入电网，其输出功率的不确定性严重影响了系统的频率和电压水平。与此同时，电网用户侧智能终端设备数量逐年增加，各节点的功率控制能力得到明显提高。因此，为使系统频率和电压幅值保持在额定值附近，本文提出了一种基于可控负荷的电压频率控制多目标优化模型。为了克服传统多目标求解方法主观性强的缺点，将所提多目标优...

Multi-objective optimization for voltage and frequency control of smart grids based on controllable loads

The output uncertainty of high-proportion distributed power generation severely affects the system voltage and frequency. Simultaneously, controllable loads have also annually increased, which markedly improve the capability for nodal-power control. To maintain the system frequency and voltage magnitude around rated values, a new multi-objective optimization model for both voltage and frequency control is proposed. Moreover, a great similarity between the multi- objective optimization and game problems appears. To reduce the strong subjectivity of the traditional methods, the idea and method of the game theory are introduced into the solution. According to the present situational data and analysis of the voltage and frequency sensitivities to nodal-power variations, the design variables involved in the voltage and frequency control are classified into two strategy spaces for players using hierarchical clustering. Finally, the effectiveness and rationality of the proposed control are verified in MATLAB.