Advances in natural gas-fired technologies have deepened the coupling between electricity and gas networks,promoting the development of the integrated electricity-gas network(IEGN)and strengthening the interaction bet...Advances in natural gas-fired technologies have deepened the coupling between electricity and gas networks,promoting the development of the integrated electricity-gas network(IEGN)and strengthening the interaction between the active-reactive power flow in the power distribution network(PDN)and the natural gas flow in the gas distribution network(GDN).This paper proposes a day-ahead active-reactive power scheduling model for the IEGN with multi-microgrids(MMGs)to minimize the total operating cost.Through the tight coupling relationship between the subsystems of the IEGN,the potentialities of the IEGN with MMGs toward multi-energy cooperative interaction is optimized.Important component models are elaborated in the PDN,GDN,and coupled MMGs.Besides,motivated by the non-negligible impact of the reactive power,optimal inverter dispatch(OID)is considered to optimize the active and reactive power capabilities of the inverters of distributed generators.Further,a second-order cone(SOC)relaxation technology is utilized to transform the proposed active-reactive power scheduling model into a convex optimization problem that the commercial solver can directly solve.A test system consisting of an IEEE-33 test system and a 7-node natural gas network is adopted to verify the effectiveness of the proposed scheduling method.The results show that the proposed scheduling method can effectively reduce the power losses of the PDN in the IEGN by 9.86%,increase the flexibility of the joint operation of the subsystems of the IEGN,reduce the total operation costs by $32.20,and effectively enhance the operation economy of the IEGN.展开更多
2023年2月17日,Hand[1]在Science上发表了“Hidden hydrogen:Does Earth hold vast stores of a renewable,carbonfree fuel?”一文,对地球上是否存在巨量的天然氢(H_(2))进行了探讨,引发了全球能源界和科技界对这一可再生零碳能源的热...2023年2月17日,Hand[1]在Science上发表了“Hidden hydrogen:Does Earth hold vast stores of a renewable,carbonfree fuel?”一文,对地球上是否存在巨量的天然氢(H_(2))进行了探讨,引发了全球能源界和科技界对这一可再生零碳能源的热议,“寻找天然氢源的热潮”也入选了Science“2023年度十大科学突破”.H2燃烧产物只有水,不释放CO_(2),因而被认为是最环保的绿色能源.天然H2作为能源转型背景下不可忽视的新能源之一[2],除了在未来一次能源需求中扮演重要角色外,甚至还可能成为气候问题的“解药”[1],同时其在原始有机质分子[3]和地球早期生命形成[4,5]中可能扮演了重要角色,因而得到了国际社会越来越多的关注.展开更多
基金partially supported by the National Natural Science Foundation of China(Grant Nos.51877033,52061635103,52007026,and 52077028).
文摘Advances in natural gas-fired technologies have deepened the coupling between electricity and gas networks,promoting the development of the integrated electricity-gas network(IEGN)and strengthening the interaction between the active-reactive power flow in the power distribution network(PDN)and the natural gas flow in the gas distribution network(GDN).This paper proposes a day-ahead active-reactive power scheduling model for the IEGN with multi-microgrids(MMGs)to minimize the total operating cost.Through the tight coupling relationship between the subsystems of the IEGN,the potentialities of the IEGN with MMGs toward multi-energy cooperative interaction is optimized.Important component models are elaborated in the PDN,GDN,and coupled MMGs.Besides,motivated by the non-negligible impact of the reactive power,optimal inverter dispatch(OID)is considered to optimize the active and reactive power capabilities of the inverters of distributed generators.Further,a second-order cone(SOC)relaxation technology is utilized to transform the proposed active-reactive power scheduling model into a convex optimization problem that the commercial solver can directly solve.A test system consisting of an IEEE-33 test system and a 7-node natural gas network is adopted to verify the effectiveness of the proposed scheduling method.The results show that the proposed scheduling method can effectively reduce the power losses of the PDN in the IEGN by 9.86%,increase the flexibility of the joint operation of the subsystems of the IEGN,reduce the total operation costs by $32.20,and effectively enhance the operation economy of the IEGN.
文摘2023年2月17日,Hand[1]在Science上发表了“Hidden hydrogen:Does Earth hold vast stores of a renewable,carbonfree fuel?”一文,对地球上是否存在巨量的天然氢(H_(2))进行了探讨,引发了全球能源界和科技界对这一可再生零碳能源的热议,“寻找天然氢源的热潮”也入选了Science“2023年度十大科学突破”.H2燃烧产物只有水,不释放CO_(2),因而被认为是最环保的绿色能源.天然H2作为能源转型背景下不可忽视的新能源之一[2],除了在未来一次能源需求中扮演重要角色外,甚至还可能成为气候问题的“解药”[1],同时其在原始有机质分子[3]和地球早期生命形成[4,5]中可能扮演了重要角色,因而得到了国际社会越来越多的关注.
