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适应清洁能源消纳的配电网直接负荷控制模型与仿真

DOI: 10.13334/j.0258-8013.pcsee.2014.25.005, PP. 4234-4243

Keywords: 直接负荷控制,需求响应,清洁能源消纳,滑模变结构控制,热力学可控负荷,配电网

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Abstract:

研究配电网中直接负荷控制技术及其改变集中式热力学可控负荷的温度设定点来控制负荷功率的方法。建立以双耦合偏微分方程组为基础的热力学可控负荷传输动态模型,通过有限差分近似为面向控制的有限维状态空间模型。提出适应出力不确定性的清洁能源滑模变结构功率跟踪控制策略,利用李亚普诺夫稳定理论验证其收敛性。在小型配电网中,对1000个制冷空调负荷进行仿真,功率跟踪误差分析结果表明所提方法能有效跟踪风电功率消纳目标,温度设定点控制分析结果表明所提方法的用户可接受百分比达到90%以上。该方法可为需求侧响应负荷在清洁能源消纳的应用提供新的技术途径。

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