含考虑IDR的冷热电联供微网的主动配电网经济优化调度

Economic optimal dispatch of an active distribution network with combined cooling,heating and power microgrids considering integrated demand response

多个冷热电联供微网接入主动配电网后,微网和配网作为不同利益主体,系统经济调度更具复杂性。为保护各自隐私,提出了一种含冷热电联供微网的主动配电网经济优化调度模型。运用机会约束规划来处理冷热电联供微网群中新能源及冷热电负荷的随机性,采用分布式建模方法,以各自区域的运行成本最小化为目标,运用目标级联法来并行求取各自区域的最优经济调度结果。同时在冷热电联供微网用户侧引入综合需求响应(Integrated Demand Respond,IDR),有利于降低供用能成本。通过改进的IEEE33节点系统算例验证表明,引入IDR后,能有效降低系统运行成本,运用目标级联法能在保护各自区域隐私的基础上求取主动配电网和冷热电联供微网各自最优的经济调度结果。

When several combined cooling,heating and power(CCHP)microgrids are connected to an active distribution network,the microgrid and network serve as different stakeholders,and the economic optimal dispatch of the system becomes more complex.To protect privacy,an economic optimal dispatch model of an active distribution network with CCHP microgrids is proposed.Chance-constrained programming is used to deal with the randomness of new energy and cooling,heating and power load in the CCHP microgrids.The distributed modeling method is adopted to minimize the operating cost of each region.Analytical target cascading(ATC)is used to determine the optimal economic dispatch results in their respective regions in parallel.At the same time,the introduction of an integrated demand response(IDR)in the user side of the CCHP microgrid is conducive to reducing energy supply costs.Verification on an improved IEEE33-bus system example shows that the introduction of IDR can effectively reduce the operating cost of the system.The optimal economic dispatch results of the active distribution network and CCHP microgrids can be obtained using ATC and protect the privacy of each region.