Abstract:In order to solve the increasingly serious phenomenon of wind and solar curtailment under the large-scale development of new energy, many cities and parks in China have begun to widely electrolyze water to produce hydrogen as an effective way for new energy accommodation, resulting in more and more electricity–hydrogen coupling systems. Taking the chemical industry park as an example, a collaborative optimization dispatch method for typical park-level electricity–hydrogen coupling systems considering hydrogen load response was proposed. Firstly, based on the actual industrial park, a typical park-level electricity–hydrogen coupling system architecture was proposed. The electricity–hydrogen coupling system model of the chemical industry park including hydrogen production by coal, hydrogen production by water electrolysis, hydrogen storage tank, ammonia production by hydrogen, hydrogen fuel generator and hydrogen transmission pipeline network was further established from the perspective of source–network–load–storage. Secondly, the maximum overall benefit of the park was set as the objective function with the penalty term of wind and solar curtailment. The demand side response of the hydrogen load was considered so that the ammonia production by hydrogen can be used as a flexible resource in the park. On this basis, the coordinated optimization dispatch of the electricity–hydrogen coupling system in the chemical industry park was carried out. In order to verify the superiority of the optimal dispatch method proposed in this paper, the optimal scheduling results of three different operation scenarios were compared. The results showed that the electrolytic cell and hydrogen fuel generators could adjust their output power by tracking the changes of power supply and electrical load, reduce the power transaction and the cost of purchasing electricity under the premise of ensuring the power balance in the park. At the same time, considering the demand side response of hydrogen ammonia productions could further reduce the wind and solar curtailment and decrease the overall operation cost of the park under the premise of ensuring economic benefits.