Optimal Offering Strategy of Virtual Power Plant with Hybrid Renewable Ocean Energy Portfolio  

作　　者：Siyuan Guo Bin Zhou Ka Wing Chan Siqi Bu Canbing Li Nian Liu Cong Zhang 

机构地区：[1]College of Electrical and Information Engineering,Hunan University,Changsha 410082,China [2]Department of Electrical Engineering,The Hong Kong Polytechnic University,Hong Kong,China [3]School of Electronic Information and Electrical Engineering,Shanghai Jiao Tong University,Shanghai 200240,China [4]State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources,North China Electric Power University,Beijing 102206,China

出　　处：《CSEE Journal of Power and Energy Systems》2023年第6期2040-2051,共12页中国电机工程学会电力与能源系统学报（英文）

基　　金：the Sino-US International Science and Technology Cooperation Project(No.2019YFE0114700);the National Natural Science Foundation of China(No.51877072);the State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources(No.LAPS20005)。

摘　　要：This paper proposes a hybrid ocean energy sys-tem to form a virtual power plant(VPP)for participating in electricity markets in order to promote the renewable ocean energy utilization and accommodation.In the proposed system,solar thermal energy is integrated with the closed-cycle ocean thermal energy conversion(OTEC)to boost the temperature differences between the surface and deep seawater for efficiency and flexibility improvements,and the thermodynamic effects of seawater mass flow rates on the output of solar-boosted OTEC(SOTEC)are exploited for deploying SOTEC as a renewable dispatchable unit.An optimal tidal-storage operation model is also developed to make use of subsea pumped storage(SPS)with hydrostatic pressures at ocean depths for mitigating the intermittent tidal range energy in order to make the arbitrage in the electricity market.Furthermore,a two-stage coordinated scheduling strategy is presented to optimally control seawater mass flow rates of SOTEC and hydraulic reversible pump-turbines of SPS for enhancing the daily VPP profit.Comparative studies have been investigated to confirm the superiority of the developed methodology in various renewable ocean energy and electricity market price scenarios.

关 键 词：Ocean thermal energy conversion rolling optimization subsea pumped storage system tidal power generation virtual power plant 

分 类 号：F416.61[经济管理—产业经济] TP18[自动化与计算机技术—控制理论与控制工程] TM73[自动化与计算机技术—控制科学与工程] TM91[电气工程—电力系统及自动化]