通过微电网和本地电动汽车集成实现邻近零能耗建筑间能源共享系统的开发

Abstract Applying high-efficient combinations of renewable energy systems and effective energy management of renewables, grid and storage resources between neighboring grid-tied zero-energy buildings (ZEB) has become growingly significant to improve the techno-economic performance of hybrid building systems. However, majority of the existed research mainly analyzed one single energy-sharing method based on simple technical yearly index. The techno-economic impact evaluated by matching index (WMI) and net present value (NPV) of various hybrid renewable energy systems combined with three different integrated building energy-sharing systems via instantaneous and predictive micro-grid-based, and local electric-vehicle(EV)-based energy-sharing remains uncovered. The research results show that with integration of instantaneous micro-grid-based and local-EV-based energy-sharing system, the techno-economic performance is enhanced (average WMI improved by 7.19 % and 6.86 %, NPV improved by 9.53 % and 5.70 %, respectively), while specific cases show various improvement outcomes largely related to the types of renewable combinations. Under instantaneous micro-grid-based sharing, the divergency of two buildings' renewable combinations brings at most 33.59 % technical improvement and 3,764,380 HKD economic benefits. In contrast, the similarity of both renewable combinations helps achieve a maximum 12.02 % matching enhancement and an extra 866,690HKD NPV improvement under local EV-based energy-sharing. As for the common energy trading business model, the building with more energy shared earns more profits as the trading price increases. However, when the residence is under the “Predictive Micro-grid-based Energy-Sharing Control” mode, a lower trading price below 0.5 HKD of the specific case is more likely to minimize the loss of office stakeholder as well as maintain positive profits of residence owners.