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In view of the network characteristics of the electric heating integrated energy system, the integrated energy system model considering the network characteristics is constructed, and the real marginal energy cost of the system is calculated. The method to solve the node marginal energy price of the integrated energy system considering the dynamic characteristics of the network is studied. First, a comprehensive energy system model considering network characteristics is constructed based on energy balance constraints. Then, based on the grid DC power flow model, the power transmission distribution factor is used to share the network loss, and the node marginal price is decomposed, including cost component, loss component and congestion component. The solution to the node marginal price is obtained, and the solution to the node gas price and node heat price is obtained by analogy. Finally, the node energy …