Calculation of Line Loss of Booster Station Based on Extranet Equivalent Model of Electric Energy Metering Data

The large-scale access of renewable energy has brought new challenges and changes to the calculation of line loss of the power grid, and for the renewable energy convergence and booster power grid, the intermittent and local characteristics of distributed generation lead to more complex power flow in the power grid, and the traditional line loss analysis and calculation model is no longer applicable. In this paper, a line loss analysis and calculation model is proposed by taking the renewable energy convergence booster station as the research object, and using the electric energy metering data. The equivalent model of the new energy convergence booster station is constructed by using the electric energy metering data, which takes the minimum sum of squares of the difference between the power data flowing into the boundary node and the actual metering data calculated by the equivalent network parameters as the objective function, and takes the equivalent network power flow balance and the rationality of the equivalent parameters as the constraints. The line loss power is calculated by solving the line parameters obtained by the equivalent model, which simplifies the complexity of line loss calculation of the renewable energy convergence booster station. Finally, the actual measurement data of a certain area is used, and the calculation results of the representative daily line loss calculated by this method are compared with the calculation results of the existing line loss calculation method. The equivalent model-based line loss measurement simplifies calculations, enhances efficiency, and enables precise line loss estimation for new energy convergence booster stations.