Online risk analysis system and method for regional power grid

An analysis system and risk analysis technology, applied in the field of regional power grid online power supply risk analysis system, can solve the problem that the deterministic analysis method cannot take into account the random disturbance of the power system, and cannot fully describe the fault uncertainty, failure rate or outage rate Weather, time, etc. are not considered

Inactive Publication Date: 2012-10-17
CHINA ELECTRIC POWER RES INST +1
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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 describ...

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  • Online risk analysis system and method for regional power grid
  • Online risk analysis system and method for regional power grid
  • Online risk analysis system and method for regional power grid

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Embodiment Construction

[0068] Features of online risk analysis of regional power grids:

[0069] The main purpose of applying the operation risk analysis in the dispatching department is to allow the operation dispatcher to clarify the possible risks of each decision and make a choice between risks and benefits. To this end, through the establishment of indicators to characterize the system risk, the possibility of failure events and the severity of their consequences can be quantitatively identified. The regional power grid belongs to the generation and transmission system, and its risk analysis includes four main aspects: determining the component failure model and load model, selecting the system state, identifying and analyzing system problems, and calculating risk indicators. Compared with large power grids and offline methods, the online risk analysis of regional power grids has the following characteristics:

[0070] 1) State selection: Offline operation risk analysis for the planning depart...

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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...

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Application Information

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IPC IPC(8): G06Q10/04G06Q50/06
Inventor 李静陈利杰贾育培罗雅迪赵昆张印
Owner CHINA ELECTRIC POWER RES INST
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