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多时间尺度协调的柔性负荷互动响应调度模型与策略

DOI: 10.13334/j.0258-8013.pcsee.2014.22.011, PP. 3664-3673

Keywords: 需求响应,柔性负荷,调度,多时间尺度,多智能体系统,协调,不确定性

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Abstract:

负荷侧资源参与电网有功调度在提高风电接纳能力方面存在着巨大潜力,但也会给调度运行带来复杂的控制问题。为解决这一问题,基于风电在不同时间尺度误差的不同以及电网对应调节能力的差异,提出“多级协调、逐级细化”的多时间尺度协调的柔性负荷响应调度模型与策略。首先,提出多时间尺度源-荷调度总体框架,将负荷调度的整个过程分为4个时间尺度,包括日前24h、日内1h、日内15min和实时负荷调度;其次,建立风电功率预测不确定性模型、负荷代理决策模型和调度控制中心决策模型;然后,在这几个核心模型的基础上,提出多时间尺度源-荷协调调度策略,给出计及风电不确定性的负荷调整量的决策计算方法;最后,在某地区实际电网算例上进行仿真验证。结果表明,本文所设计的负荷调度模型和策略可以充分利用不同时间尺度上的负荷资源,有效平衡风电预测功率不确定性所引起的功率不平衡量,并减少系统备用容量。

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