Distributed Power Dispatch of Transnational Power Grids Considering Power–gas–carbon Joint Transactions: an Example of Planned Northeast Asian Power Grid EI

To ensure the orderly development and coordinated operation of transnational power grids, it is crucial to organically combine transnational power trading, natural gas trading, and carbon trading. In this study, a transnational joint power–gas– carbon trading model is formulated in which the power system is regarded as the core element and the coupling factors of natural gas trading and carbon trading are considered. A dynamic power dispatching model for transnational power grid is formulated under the framework of the above joint transactions to maximize the overall benefits. Furthermore, a distributed transnational power dispatching algorithm is proposed to protect the industrial information privacy of each country. The global optimization problem is transformed into several sub-problems of each country, which can be solved iteratively to obtain a global optimal solution under a given accuracy. Finally, a simulation of the Northeast Asian transnational power grid is performed, and the transnational power dispatching is analyzed under different scenarios of power–gas–carbon joint trading. Results show that the joint power–gas–carbon trading framework in transnational power grid is conducive to the accommodation of renewable energy resources and improvement of the operation economy. The uncertainties of renewable energy will be considered in the future, leading to more practical results.