虚拟电厂(Virtual power plant,VPP)能有效减小新能源对电网的冲击,提高供电可靠性。本文在分析了VPP各分布式电源(Distributed generator,DG)发电成本的基础上,构建了计及环境效益的含风力发电、光伏发电、小水电和微型燃气轮机发电的...虚拟电厂(Virtual power plant,VPP)能有效减小新能源对电网的冲击,提高供电可靠性。本文在分析了VPP各分布式电源(Distributed generator,DG)发电成本的基础上,构建了计及环境效益的含风力发电、光伏发电、小水电和微型燃气轮机发电的VPP经济性优化调度模型,设计了基于小水电季节特性的VPP运行策略。以各时段内VPP实际出力跟踪计划出力、同时VPP发电成本和环境成本最小为目标,通过粒子群算法计算得到VPP各DG的出力。讨论了丰水期、平水期和枯水期VPP完成计划出力时微型燃气轮机出力系数,比较了丰水期、平水期和枯水期VPP发电成本和环境成本,并基于火力发电的环境成本计算了丰水期、平水期和枯水期VPP环境效益。实验结果验证了所建模型和运行策略的合理性,并表明VPP能有效平抑新能源出力偏差,降低DG发电总成本。展开更多
The nature of variable and uncertainty from renewable energy sources (RESs) makes them challenging to be integrated into the main grid separately. A Virtual Power Plant (VPP) is proposed to aggregate the capacities of...The nature of variable and uncertainty from renewable energy sources (RESs) makes them challenging to be integrated into the main grid separately. A Virtual Power Plant (VPP) is proposed to aggregate the capacities of RESs and facilitate the integration and management in a decentralized manner. In this paper, a novel framework for optimal energy management of VPP considering key features such as handling uncertainties with RESs, reducing operating costs and regulating system voltage levels is proposed, and a two-stage stochastic simulation is formulated to address the uncertainties of RESs generation and electricity prices. Simulation result show that the framework can benefit from ensuring the energy balance and system security, as well as reducing the operation costs.展开更多
文摘虚拟电厂(Virtual power plant,VPP)能有效减小新能源对电网的冲击,提高供电可靠性。本文在分析了VPP各分布式电源(Distributed generator,DG)发电成本的基础上,构建了计及环境效益的含风力发电、光伏发电、小水电和微型燃气轮机发电的VPP经济性优化调度模型,设计了基于小水电季节特性的VPP运行策略。以各时段内VPP实际出力跟踪计划出力、同时VPP发电成本和环境成本最小为目标,通过粒子群算法计算得到VPP各DG的出力。讨论了丰水期、平水期和枯水期VPP完成计划出力时微型燃气轮机出力系数,比较了丰水期、平水期和枯水期VPP发电成本和环境成本,并基于火力发电的环境成本计算了丰水期、平水期和枯水期VPP环境效益。实验结果验证了所建模型和运行策略的合理性,并表明VPP能有效平抑新能源出力偏差,降低DG发电总成本。
文摘The nature of variable and uncertainty from renewable energy sources (RESs) makes them challenging to be integrated into the main grid separately. A Virtual Power Plant (VPP) is proposed to aggregate the capacities of RESs and facilitate the integration and management in a decentralized manner. In this paper, a novel framework for optimal energy management of VPP considering key features such as handling uncertainties with RESs, reducing operating costs and regulating system voltage levels is proposed, and a two-stage stochastic simulation is formulated to address the uncertainties of RESs generation and electricity prices. Simulation result show that the framework can benefit from ensuring the energy balance and system security, as well as reducing the operation costs.
