考虑负荷聚集商参与的源荷互动双层优化模型

A Bi-Level Optimal Dispatching Model Considering Source-Load Interaction Integrated With Load Aggregator

需求响应的实施需要对负荷侧资源进行有效整合和合理管理,负荷聚集商作为其他电力系统参与者与需求响应资源之间的新兴中介,可参与电力系统源荷互动的实现。针对目前主网调度负荷侧资源存在障碍的问题,提出以负荷聚集商安排负荷削减合同的方式参与需求响应,上层以系统综合调度成本最低为优化目标,下层在分析主动负荷用电特性的基础上制定负荷削减合同作为负荷聚集商的调用对象,以此构建源荷互动双层优化模型进行算例仿真。结果验证了负荷聚集商的参与能降低发电机组的启停费用,在兼顾各方利益的同时有利于系统削峰填谷及经济效益最优的实现。

Implementation of demand response requires effective integration and rational management of load-side resources.As an emerging intermediary between electricity market participants and demand side resources,load aggregator（LA） can participate in realization of source-load interaction of power system.In order to alleviate obstacle of demand side resource scheduling from the main power grid,this paper proposes load reduction contracts arranged by LA to participate in demand response.Based on analysis of active load characteristics,this paper presents a bi-level optimization model for economic source-load interaction integrated with LA.Case study shows that LA participation can reduce start-stop costs of generator sets and improve system load curve when taking interests of both sides into account,which is beneficial to achievement of optimal economic system operation.