基于产消者能量-备用联合共享的虚拟电厂优化运营方法

Optimal Operation Method for Virtual Power Plant Based on Joint Sharing of Energy and Reserve of Prosumers

为促进多层级市场环境下多市场主体的协调优化与权责一体,通过虚拟电厂(VPP)将本地点对点(P2P)交易与批发市场衔接起来,提出一种基于产消者能量和备用联合共享的VPP优化运营方法。首先,将备用需求的溯源交易扩展至配电网市场,并通过自适应交替方向乘子法(ADMM)实现本地能量与备用的分布式出清。然后,建立VPP-产消者双层交易模型,上层VPP收集产消者需求并参与批发市场交易,优化购售价格;下层产消者采用通用高斯分布与机会约束理论量化备用需求、决策能量与备用量。最后,基于二分法对模型进行求解。算例结果表明,所提机制在扩大VPP市场收益的同时实现了对产消者备用成本的溯源分摊,而本地市场增大了产消者与VPP的议价空间。

To promote the coordination and optimization of multi-market entities and the entities of power and responsibility in a multi-level market environment,this paper combines local peer-to-peer(P2P)transactions with wholesale markets through the virtual power plant(VPP).An optimal operation method for VPP based on the joint sharing of energy and reserve of prosumers is proposed.Firstly,the reserve requirement is extended to the distribution network market and the local energy-reserve market is distributedly cleared by the adaptive alternating direction method of multipliers(ADMM).Secondly,a bi-level trading model of VPP-prosumer is established.The upper-level VPP collects the transaction demands of prosumers and optimizes the purchase and sale prices.The lower-level prosumers quantify reserve demands,decision energy and reserve capacity by using the general Gaussian distribution and opportunity constraint theory.Finally,the model is solved by dichotomy.The results show that the proposed mechanism increases the market income of VPP and realizes the traceability and allocation of reserve cost to prosumers.The local market enlarges the bargaining space of VPP and prosumers.