Method and system for improving accuracy of future state load flow calculation results

Abstract

The invention discloses a method and a system for improving the accuracy of future state load flow calculation results, and the method comprises the steps: carrying out the correction of new energy power prediction data, and specifically comprises the steps: determining a new energy object needing to be corrected according to the collection condition of the new energy power prediction data; acquiring basic data of an object to be corrected; correcting the short-term prediction data according to a certain strategy on the basis of the current actual output; verifying whether the corrected data is reasonable or not according to the model limit value information; and correcting the bus load prediction data. The method specifically comprises the steps: determining a bus load object needing to be corrected according to a bus load prediction data collection condition; acquiring basic data of an object to be corrected; correcting short-term prediction data according to a certain strategy on the basis of historical actual power flow; and verifying whether the corrected data is reasonable or not according to the model limit value information. By improving the accuracy of load flow calculation basic data, the accuracy of future state load flow calculation results is improved.

Description

technical field [0001] The invention relates to a method and a system for improving the accuracy of future power flow calculation results, belonging to the technical field of power system automation. Background technique [0002] Regional interconnected large power grid, the schematic diagram is as follows figure 1 As shown, it is usually composed of multiple provincial power grids connected together through high-voltage DC transmission lines or high-voltage AC transmission lines, and connected to other regional power grids through high-voltage transmission lines. [0003] The calculation of the future power flow of the power grid is based on the planning data (hereinafter collectively referred to as planning data) such as conventional power generation plan, new energy power forecast, bus load forecast, tie-line plan, and equipment shutdown plan, and on the basis of state estimation reference section data These planning data are superimposed, and the power flow distribution...

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to overcome the defects existing in the prior art, and propose a method and system for improving the accuracy of the calculation results of the future state power flow, which is aimed at the ultra-short-term calculation of the future multi-hour power flow distribution of the regional interconnected large power grid. Planning data cannot be obtained, and the accuracy of future power flow calculation results can be improved by correcting short-term forecast data, especially short-term new energy power forecast and short-term bus load forecast

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