Robust state estimation method and device for comprehensive energy system

The invention discloses a robust state estimation method and device for a comprehensive energy system and the method comprises the steps: building a cold supply system model according to the cold water flow of a pipeline and the temperature of a cold network node, and solving the cold power of the node according to the cold supply system model; performing cooling, heating and power coupling analysis according to the preset cooling consumption electric power and the preset heating consumption electric power to obtain coupling power; constructing a cold network measurement equation according to the cold network state variable and the node cold power, constructing a heat supply network measurement equation according to the heat supply network state variable and the preset node thermal power, and constructing a power grid measurement equation according to the power grid state variable; and based on a preset robust estimation algorithm, performing state estimation through the cold network measurement equation, the