为适应电力系统分区运行与多类型灵活性资源地域分布不均衡的特点，提出了考虑多区域多类型灵活性资源互济的分散协调调度策略。文章建立火电机组、储能和可中断负荷的综合灵活性供给能力模型，分析了源荷双侧不确定性带来的灵活性需求，采用条件风险价值量化了区域灵活性不足风险成本。考虑多区域多类型灵活性资源协同互济与灵活性互济辅助服务成本，基于改进的交替方向乘子法(alternating direction method of multipliers,ADMM)对区域间灵活性互济水平进行了分析，实现了分散式调度下多类型灵活性资源跨区域协调互动。算例验证结果表明，该策略促进了大电网的灵活性供需平衡，降低了新能源负荷的弃限风险与系统运行成本，对经济安全调度具有积极意义。
英文摘要:
In order to adapt to the regional operation of power system, and the uneven regional distribution of multi-type flexibility resources, a distributed and coordinated dispatching strategy considering the mutual aid of multi-area and multi-type flexible resources is proposed. The flexible supply model of thermal power units, energy storage and interruptible load is established, and the flexibility demand caused by the uncertainty of both source and load is analyzed. The risk cost of insufficient regional flexibility is quantified by conditional value-at-risk. Based on improved alternating direction method of multipliers (ADMM), the mutual aid level of inter regional flexibility is analyzed considering multi-region and multi-type flexible resource mutual aid and flexible mutual aid service cost, so as to realize the cross regional coordination as well as interaction of multi-type flexible resources under decentralized scheduling. The case verification results show that the strategy promotes the flexible supply-demand balance of large power grid, reduces system operation cost and the risk of abandoning new energy and shedding load, which is of positive significance to economic and safe dispatching.
