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电网技术  2013 

电量协调与成本控制的日内滚动发电计划

, PP. 2965-2972

Keywords: 电量协调,成本控制,风电消纳,滚动发电计划

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Abstract:

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。

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