INTERVAL POWER FLOW CALCULATION METHOD FOR POWER-HEAT INTEGRATED ENERGY SYSTEM

摘要

Disclosed in the present invention is an interval power flow calculation method for a power-heat integrated energy system, comprising: (1) obtaining power-heat integrated energy system information, and establishing a power-heat integrated energy system model according to the information; (2) converting a pipe pressure drop equation in the system model into a one-variable quadratic function of a flow rate m; (3) obtaining the iterative initial value of a state variable by calculation according to the power-heat integrated energy system model; (4) iteratively solving the upper and lower limits of the state variable by using a linear optimization method according to the iterative initial value of the state variable and the one-variable quadratic function of the flow rate m; and (5) forming the upper and lower limits of the state variable into an interval, and outputting the interval as a power flow solution. The present invention has small calculation complexity and overcomes the conservatism of the interval solution.