电量协调与成本控制的日内滚动发电计划  

An Intraday Rolling Scheduling With Unit Energy Coordination and Operating Cost Control

作　　者：白杨[1] 钟海旺[1] 夏清[1] 杨明辉[2] 张健[2] 张国强[2] 

机构地区：[1]电力系统及发电设备控制和仿真国家重点实验室(清华大学电机系),北京市海淀区100084 [2]山东电力集团公司调度控制中心,山东省济南市250001

出　　处：《电网技术》2013年第10期2965-2972,共8页Power System Technology

基　　金：山东电网科技项目(含大规模风电接入的电网发电调度模式与关键性技术研究与应用)

摘　　要：由于日前风电预测存在较大误差,采用日内滚动发电计划消纳风电波动性已成为业内的共识。然而,在我国现行的"三公"调度模式下,日内滚动发电计划须考虑电量完成进度的滚动协调和风电消纳成本的控制。为此,提出了日内滚动发电计划的2种实现模式,即电量完成进度滚动协调模式和风电消纳成本控制模式。针对电量完成进度滚动协调模式,提出了目标电量日内滚动计算模型,滚动修正剩余时段机组目标电量,并以该目标电量为约束实现机组电量完成进度的滚动协调,提升了发电调度的公平性。针对风电消纳成本控制模式,在调度模型中增加了风电消纳成本控制的约束条件,以决策可接受消纳成本下的弃风电量,在出现概率较大的风电波动区间内,以合理成本消纳风电。文章建立了统一的全景日内滚动发电计划模型,能够在跟踪日前计划的基础上,通过约束条件的选择,分别适应2种模式下滚动发电计划的编制。算例分析表明,提出的模型与方法能够满足2种模式所期望的目标,实现公平与成本控制的风电消纳。In view of the fair-sized error of day-ahead wind power prediction, it become the common view in the electricity industry to adopt intraday rolling scheduling to accommodate the fluctuation of wind energy. In current environment of carrying out the ＂open, just and fair＂ dispatching mode in China, in the intraday rolling scheduling the rolling coordination of the completion schedule of the generated energy and the control of the cost for accommodating wind power must be considered. For this purpose, two modes to implement the intraday rolling scheduling, namely the rolling coordination mode of the completion schedule of the generated energy and the control mode of the cost for accommodating wind power, are proposed. As for the former mode, an intraday rolling calculation model for target energy is put forward to modify target energy in residual time intervals in rolling way, and this target energy is taken as the constraint to implement the rolling coordination of completion schedule of unit energy, so that every unit can achieve almost the same energy completion rate and the fairness of generation scheduling is improved; as for the latter mode, the constraint for controlling the cost of accommodating wind power is added in the dispatching model to determine the energy due to wind power curtailment under acceptable accommodation cost, so within the fluctuation range with high occurrence probability the wind power can be accommodated by reasonable cost. Based on above-mentioned two modes, a full scenario intraday rolling scheduling model is proposed, and on the basis of tracking the day-ahead scheduling and through the selection of constraint conditions this model can make rolling schedulings that are suitable to the two modes respectively. Case study results show that the proposed method can achieve the desired objectives of the two modes and implement wind power accommodation under both fair dispatching and cost control.

关 键 词：电量协调 成本控制 风电消纳 滚动发电计划 

分 类 号：TM715[电气工程—电力系统及自动化]