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

A power flow calculation, future state technology, applied in information technology support systems, AC networks with the same frequency from different sources, AC network circuits, etc.

Active Publication Date: 2020-10-20
NARI TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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

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Embodiment 1

[0073] Embodiment 1: as figure 2 As shown, the present invention proposes a method for improving the accuracy of future state power flow calculation results, including:

[0074] Correcting the new energy power prediction data includes the following steps:

[0075] Step SS11: According to the collection of new energy power prediction data, determine the new energy objects that need to be corrected;

[0076] Step SS12: Obtain the basic data of the object to be corrected;

[0077] Step SS13: Correct the short-term forecast data according to a certain strategy on the basis of the current actual output;

[0078] Step SS14: Check whether the corrected data is reasonable according to the model limit information; correct the bus load forecast data, specifically including the following steps:

[0079] Step SS21: According to the collection of bus load forecast data, determine the bus load object that needs to be corrected;

[0080] Step SS22: Obtain the basic data of the object to...

Embodiment 2

[0128] Embodiment 2: The present invention also proposes a system for improving the accuracy of future power flow calculation results, including:

[0129] The new energy power prediction data correction module is used to: determine the new energy objects that need to be corrected according to the collection of new energy power prediction data; obtain the basic data of the objects that need to be corrected; correct the short-term forecast according to a certain strategy based on the current actual output Data; check whether the corrected data is reasonable according to the model limit information;

[0130] The bus load forecast data correction module is used to: determine the bus load object that needs to be corrected according to the bus load forecast data collection situation; Check whether the corrected data of the model limit value information is reasonable;

[0131] The new energy power forecast data correction module is connected to the bus load forecast data correction mo...

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/06
CPCH02J3/06H02J2203/10H02J2203/20Y04S10/50
Inventor 江涛昌力吴炳祥庞腊成彭虎赵浚婧曹荣章丁恰
Owner NARI TECH CO LTD
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