需求响应参与的微电网风险约束调度模型

Risk-constrained dispatching model for microgrid considering demand response

  • 摘要: 随着间歇性可再生能源渗透率的提高和先进信息技术的发展,如何管理响应性负荷以优化资源和资产成为热点问题。需求响应能够改变用户消费模式,使电网供需平衡。在微电网运营商能够通过本地发电机组和需求响应满足用户电力需求的前提下,提出一种新的考虑风险管理策略的两阶段随机规划模型,利用条件风险价值对微电网运营商进行建模。运营商根据实时定价方案售电,用户通过调整负荷来响应电价,以降低用电成本。所提的调度模型在考虑规避风险和系统频率安全的前提下,最大限度地提高运营商的预期利润,算例结果证明了所提模型的有效性。

     

    Abstract: With the improvement of intermittent renewable energy penetration and the development of advanced information technology, research begins to focus on how to manage responsive loads to optimize resources and assets. Demand response can change the consumer consumption mode and balance the supply and demand of the power grid. On the premise that microgrid operators can meet users' power demand through local generators and demand response, this paper proposes a new two-stage stochastic programming model considering a risk management strategy. Business risk aversion is modeled by the conditional value at risk method. Microgrid operators sell electricity to users according to real-time price schemes, and users respond to electricity prices by adjusting loads to reduce costs. Considering risk aversion and system frequency security, the proposed scheduling model maximizes the expected profits of operators. The effectiveness of the proposed model is demonstrated by the results of case studies.

     

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