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[en] Highlights: • Improving the utilization of wind power by the demand response of residential hybrid energy system. • An optimal scheduling of home energy management system integrating micro-CHP. • The scattered response capability of consumers is aggregated by demand bidding curve. • A stochastic day-ahead economic dispatch model considering demand response and wind power. - Abstract: As the installed capacity of wind power is growing, the stochastic variability of wind power leads to the mismatch of demand and generated power. Employing the regulating capability of demand to improve the utilization of wind power has become a new research direction. Meanwhile, the micro combined heat and power (micro-CHP) allows residential consumers to choose whether generating electricity by themselves or purchasing from the utility company, which forms a residential hybrid energy system. However, the impact of the demand response with hybrid energy system contained micro-CHP on the large-scale wind power utilization has not been analyzed quantitatively. This paper proposes an operation optimization model of the residential hybrid energy system based on price response, integrating micro-CHP and smart appliances intelligently. Moreover, a novel load aggregation method is adopted to centralize scattered response capability of residential load. At the power grid level, a day-ahead stochastic economic dispatch model considering demand response and wind power is constructed. Furthermore, simulation is conducted respectively on the modified 6-bus system and IEEE 118-bus system. The results show that with the method proposed, the wind power curtailment of the system decreases by 78% in 6-bus system. In the meantime, the energy costs of residential consumers and the operating costs of the power system reduced by 10.7% and 11.7% in 118-bus system, respectively.
[en] Various developing countries have been promoting public–private partnership (PPP) infrastructure projects in recent years. Energy infrastructure project construction, which needs substantial capital investments, is a cornerstone of and supports economic development. A PPP-based energy infrastructure project is beneficial for alleviating developing countries’ financial burden and for facilitating the diversified development of the energy market. Therefore, to increase government income and reduce infrastructure project costs, the PPP energy project construction model attracts considerable attention of various industries, especially in developing countries. For example, as gross domestic product growth decelerates and the government debt ratio rapidly increases, many Chinese provinces and cities face financial obstacles to economic development; therefore the Chinese government has issued a series of PPP-based energy policies. However, a number of risk factors associated with PPP projects, and conflicting interests between governments and private investors, have resulted in project failure. This study analyzes the development of PPP in China from the economic and industrial development perspective. It combines the latest PPP energy policies of China to solve problems that stem from the main risk factors involved in constructing and operating PPP energy projects. This research also provides game analysis for achieving maximum benefits as the government and the private investor have conflicting interests. (letter)