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Anticipated accident selection method for electric power system with uncertain injection power

A technology for predicting accidents in power systems, which is applied in the field of predicting accidents selection in power systems with uncertain injected power, and can solve the problem of less static safety predicting accidents selection

Active Publication Date: 2014-09-10
STATE GRID CORP OF CHINA +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, for the large-scale access of new energy to the power grid, there are still relatively few studies on the selection of power system static safety prediction accidents under the uncertainty of injected power, and the results are still difficult to meet the online requirements.

Method used

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  • Anticipated accident selection method for electric power system with uncertain injection power
  • Anticipated accident selection method for electric power system with uncertain injection power
  • Anticipated accident selection method for electric power system with uncertain injection power

Examples

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Embodiment 1

[0071] like figure 1 As shown, the invention of this example does not determine the power system prediction accident selection method of injected power, and its steps include:

[0072] 1) Static security analysis and modeling of power system with uncertain bus injection power:

[0073] Firstly, the topological structure of the researched power system and the power output characteristics with uncertain information are analyzed, and the power output characteristics and the characteristics of the static security problems of the power system caused by load changes are paid attention to. Due to the uncertainty of new energy power output, load forecasting also has a certain accuracy deviation, and the operating status of the power system has certain uncertainties. These uncertain information pose challenges to the safe operation of the power system. In view of the above analysis, the present invention establishes a power system static security analysis model that can reflect the lo...

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Abstract

The invention relates to an anticipated accident selection method for an electric power system with uncertain injection power. The method comprises the following steps: (1) performing static security analysis modeling on the electric power system with uncertain bus injection power; (2) generating anticipated accident set data information; (3) simulating anticipated accidents and determining that an uncertain amount of electric power system state information is contained after the accidents; (4) determining system state interval indexes after the anticipated accidents; (5) comparing corresponding interval indexes of the accident set; (6) sequencing fault indexes and selecting an anticipated event. By adopting the static safety analysis anticipated accident selection method for the system, system running personnel can know the static safety level of the electric power system within a future period of time, and the power grid running reliability and stability are enhanced.

Description

Technical field: [0001] The invention relates to a method for selecting a predicted accident in a power system, and more particularly to a method for selecting a predicted accident in a power system with uncertain injected power. Background technique: [0002] At present, the static safety analysis of power system is one of the important measures to improve the static safety of power system, and the analysis of anticipated accidents is one of the main contents of static safety analysis. The operating status of the system after a branch circuit or generator is disconnected. Predicted accident selection is a combination of predicted accident verification and predicted accident ranking, that is, according to the system status after the predicted accident, the severity of the accident is judged, and the sorting result of the predicted accident severity is given, which is output to the predicted accident evaluation for the formulation of prevention and control methods. [0003] ...

Claims

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Application Information

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IPC IPC(8): H02J3/00
Inventor 杨胜春姚建国王珂许超罗李子顾伟曾丹周竞李亚平刘建涛毛文博
Owner STATE GRID CORP OF CHINA
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