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计及需求价格弹性的区域能源中心建模与日前优化调度 被引量:22
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作者 陈泽兴 张勇军 +2 位作者 许志恒 蔡泽祥 thanhtung ha 《电力系统自动化》 EI CSCD 北大核心 2018年第12期27-35,共9页
能源市场管制放松的背景下,将能源价格作为一种可控资源,有望进一步推进区域能源中心(DEC)内电、气、冷/热等多种能源的优化运行。文中以能量枢纽为基础模型,提出了DEC功率平衡方程的通用线性化建模方法;同时,计及能源需求的价格弹性,... 能源市场管制放松的背景下,将能源价格作为一种可控资源,有望进一步推进区域能源中心(DEC)内电、气、冷/热等多种能源的优化运行。文中以能量枢纽为基础模型,提出了DEC功率平衡方程的通用线性化建模方法;同时,计及能源需求的价格弹性,对其进行分段线性化建模,并引入0-1变量及线性约束将分段线性函数的描述统一化。进一步,以DEC净收益最大化为目标,计及能源价格可控性,建立了DEC日前优化调度的混合整数二次规划模型,通过GAMS调用CPLEX进行求解。最后,以微网型DEC为例,验证了所提建模方法的有效性,分析了能源价格是否参与调控、不同价格弹性及新能源预测误差对调度结果的影响。结果表明,充分利用负荷的价格弹性,在最大化DEC净收益之余,有利于减小负荷方差和峰谷差,深度挖掘DEC的优化潜力。 展开更多
关键词 价格弹性 区域能源中心 分段线性化 GAMS 优化调度
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Energy hub modeling to minimize residential energy costs considering solar energy and BESS 被引量:17
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作者 thanhtung ha Yongjun ZhaNG +1 位作者 V.V.ThaNG Jianang HUANG 《Journal of Modern Power Systems and Clean Energy》 SCIE EI 2017年第3期389-399,共11页
This paper aims to optimize total energy costs in an operational model of a novel energy hub(EH) in a residential area. The optimization problem is set up based on daily load demand(such as electricity, heat, and cool... This paper aims to optimize total energy costs in an operational model of a novel energy hub(EH) in a residential area. The optimization problem is set up based on daily load demand(such as electricity, heat, and cooling) and time-of-use(TOU) energy prices. The extended EH model considers the involvement of solar photovoltaic(PV) generation, solar heat exchanger(SHE), and a battery energy storage system(BESS). A mathematical model is constructed with the objective of optimizing total energy cost during the day, including some constraints such as input-output energy balance of the EH, electricity price,capacity limitation of the system, and charge/discharge power of BESS. Four operational cases based on different EH structures are compared to assess the effect of solar energy applications and BESS on the operational efficiency. The results show that the proposed model predicts significant changes to the characteristics of electricity and gas power bought from utilities, leading to reduced total energy cost compared to other cases. They also indicate that the model is appropriate for the characteristics of residential loads. 展开更多
关键词 Natural gas price Electricity price Energy Hub Optimal operation General algebraic modeling system(GAMS) Solar Battery energy storage system(BESS)
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Optimal Operation of Energy Hub Based Micro-energy Network with Integration of Renewables and Energy Storages 被引量:3
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作者 thanhtung ha Ying Xue +3 位作者 Kaidong Lin Yongjun Zhang Vu Van Thang Thanhha Nguyen 《Journal of Modern Power Systems and Clean Energy》 SCIE EI CSCD 2022年第1期100-108,共9页
This study proposes an optimized model of a micro-energy network(MEN)that includes electricity and natural gas with integrated solar,wind,and energy storage systems(ESSs).The proposed model is based on energy hubs(EHs... This study proposes an optimized model of a micro-energy network(MEN)that includes electricity and natural gas with integrated solar,wind,and energy storage systems(ESSs).The proposed model is based on energy hubs(EHs)and it aims to minimize operation costs and greenhouse emissions.The research is motivated by the increasing use of renewable energies and ESSs for secure energy supply while reducing operation costs and environment effects.A general algebraic modeling system(GAMS)is used to solve the optimal operation problem in the MEN.The results demonstrate that an optimal MEN formed by multiple EHs can provide appropriate and flexible responses to fluctuations in electricity prices and adjustments between time periods and seasons.It also yields significant reductions in operation costs and emissions.The proposed model can contribute to future research by providing a more efficient network model(as compared with the traditional electricity supply system)to scale down the environmental and economic impacts of electricity storage and supply systems on MEN operation. 展开更多
关键词 Micro-energy network(MEN) natural gas price electricity price energy hub(EH) RENEWABLES energy storage optimal operation
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