Online risk analysis system and method for regional power grid

Abstract

The invention provides online risk analysis system and an online risk analysis method for a regional power grid. The system comprises a display unit, a power grid running risk monitoring unit, an important user monitoring unit, an analysis unit and a risk grading unit; the method comprises the following steps: (1). acquiring the power grid running data and system state; (2). conducting expect fault set selection and fault analysis; (3). judging the result caused by the power grid according to the expect fault, if power supply risk exists, conducting the step (4), otherwise returning the step 2; and (4). calculating risk indicator, and conducting risk grade prompt according to the indicator. The online risk analysis system and the online risk analysis method for the regional power grid comprehensively consider the current state probability, fault possibility and fault seriousness of the system, and help a dispatcher analyze and find hidden risk of the system.

Description

technical field [0001] The invention belongs to the field of electric power systems, and in particular relates to a risk analysis system and method for on-line power supply of regional power grids. Background technique [0002] The safety analysis module in EMS has long adopted the deterministic analysis framework proposed in the 1960s, but it cannot account for various random disturbances in the power system, and cannot fully describe the uncertainty of faults. The traditional power system reliability analysis uses the probability analysis method to study the uncertainty of the power system, but its main application field is the long-term planning of the power system, which is mainly used for offline analysis, and cannot be used for real-time judgment on the operating status of the power system , and the purpose of the operation risk analysis is to use the current operation and equipment information of the power grid to predict the system operation risk in the future (minut...

AI Technical Summary

Problems solved by technology

[0005] The disadvantages of the existing probabilistic analysis models and algorithms for on-line operation suitable for geological survey characteristics include: 1) Deterministic analysis methods (such as static safety analysis) cannot take into account various random disturbances of the power system, and cannot fully describe faults uncertainty

2) The failure rate or outage rate of outdoor components does not consider factors such as weather and time

3) At present, a lot of research has been done on the risk analysis of power system operation, but most of the methods are suitable for large-scale transmission network or offline power grid planning research

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