基于运行状态分级的柔性互联台区自适应优化调度

Adaptive optimal scheduling for flexible interconnected distribution station areas based on operating state classification

柔性互联装置的接入改变了配电台区的原有形态,能够实现不同台区的灵活互动,但现有的调度策略难以平衡系统运行经济性和电压质量的关系。对此提出一种基于运行状态分级的自适应优化调度策略。考虑到系统运行状态对优化调度策略的影响,依据配电台区的电压将系统运行状态分为正常模式、预警模式和二次电压恢复模式,并基于此构建适用于多级运行状态的优化调度模型。为实现不同优化目标下的协调运行,提出一种自适应系统运行状态的权重系数调节方法。所提出的优化调度模型和权重系数调节方法在IEEE 33节点系统算例中进行仿真验证。结果表明,该策略可以根据系统运行需求自主调节优化目标的权重系数,能够在保证系统经济运行的同时有效降低电压越限风险,并减小二次电压恢复模式下的柔性负荷波动。

The access of flexible interconnection equipment has changed the original form of distribution station area,which can realize flexible interaction among various station areas.However,the existing scheduling strategies are difficult to balance the relationship between system operation economy and voltage quality.A novel adaptive optimization scheduling strategy based on operation state classification is proposed.Considering the effect of the operation state on the scheduling strategy,the operation states are divided into normal mode,voltage alert mode and secondary voltage recovery mode according to the voltage in the distribution substation,and based on this,an optimal scheduling model suitable for different operational states is established.Furthermore,a method is proposed to adjust the weight coefficient for the adaptive state of system operation in order to achieve coordinated operation under varying optimization objectives.The effectiveness of the proposed scheduling model and the method for determining weight coefficients is verified on IEEE 33-bus system.The results show that the proposed strategy can adjust weighting coefficients of optimization objectives based on the system operation requirements,thereby ensuring the economical operation of the system,reducing the risk of voltage over-limit,and minimizing load variations in the secondary voltage recovery mode.