节能发电调度下基于虚拟机组的日前负荷调度模型  

Model of Day-ahead Load Scheduling Based on Virtual Generator Unit in Energy-Saving Power Generation Dispatching

作　　者：高赐威[1] 梁甜甜[1] 李扬[1] 

机构地区：[1]江苏省智能电网技术与装备重点实验室(东南大学),江苏省南京市210096

出　　处：《中国电机工程学报》2014年第22期3691-3699,共9页Proceedings of the CSEE

基　　金：国家863高技术基金项目(2011AA05A115)~~

摘　　要：为促进节能减排,扩大系统对可再生能源的接纳,可通过负荷调度将负荷侧可调节资源常态化地纳入到电力系统调度运行中。文章研究将需求侧资源进行虚拟机组建模的方法,分析虚拟机组的成本特性及负荷调度对参与方的经济利益影响,同时分析了负荷的物理特性以及作为虚拟机组需要遵循的约束。在此基础上,建立节能发电调度模式下的日前负荷调度模型,通过日前小时电价调用小时响应负荷和日内可转移负荷,以更少的发电成本实现电力行业更高层次的节能减排,最后通过对负荷调度结果的还原将虚拟机组出力转换为实际负荷值。算例表明所建立的日前负荷调度模型可方便地进行负荷调度,有效降低煤耗和污染物排放,并达到较好的削峰填谷效果。In order to promote energy conservation and emission reduction, and expand the access of intermittent renewable energy, demand side adjustable resources could be normally connected into dispatch operation of power system through load scheduling. On the basis of analyzing the cost characteristics of virtual generator units and the impact of load scheduling on economic interests of stakeholders, the method of modeling demand side resources as virtual generator units was proposed in this paper. The physical characteristics of load and constraints as virtual generator units were analyzed further. With this method, model of day-ahead load scheduling in energy-saving power generation dispatching was built, in which intra-hour transferable loads and intraday transferable loads were adjusted by day-ahead hourly price. Adopting this model, higher level of energy conservation and emission reduction in electric power industry with less costs of power generation could be realized, and the output power of virtual generator units was converted to actual load value by restoring the results of power scheduling. The example shows that load scheduling can be easily implemented by the established model, thus the coal consumption and pollutant discharge are effectively decreased, and the desired results of peak clipping and valley filling are achieved.

关 键 词：智能电网 需求响应 负荷调度 虚拟机组 节能发电调度 

分 类 号：TM73[电气工程—电力系统及自动化]