Electric network fault self-adapting diagnostic method based on element correlation analysis

A power grid fault and diagnosis method technology, applied in the direction of fault location, information technology support system, etc., can solve problems such as difficult to correctly identify multiple faults, cannot adapt to power grid topology changes, etc., and achieve fast execution speed and good fault tolerance
CN101299053AInactive Publication Date: 2008-11-05JIANGSU ELECTRIC POWER CO
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
JIANGSU ELECTRIC POWER CO
Publication Date
2008-11-05
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

A method for self-adapting diagnosing the failure of electric network based on the correction analysis of element is characterized in that each power-off element in the power-off area is defined with a failure index function which represents the supporting degree of the output quantity facing to other power-off elements to the failure of the element. The failure element and failure type are recognized according to the value of the failure index function. The method according to the invention can correctly recognize the multiple failure of a large-scale electric power system according to the common actions of switches and protections. A stronger fault-tolerant property is provided. The execution speed is fast in order to stabilize the system real-time. The multiple malfunctions in a same tipping area can be executed with diagnosis. The method according to the invention is suitable for the failure discriminating of the control system of the large-scale electric power system.
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Description

technical field

[0001] The invention belongs to the field of power grid control. More precisely, the invention relates to an adaptive diagnosis method for multiple faults in a power grid based on component correlation analysis, which is suitable for fault diagnosis of large-scale power systems and can be used as a fault criterion method for a stable control system . Background technique

[0002] When some serious faults occur in the power system that the dispatcher cannot respond to, the stability control device is required to quickly and accurately determine the fault location, and take effective measures to restore the normal operation of the system as soon as possible. Traditional fault identification methods for stability control devices generally judge faulty components and fault types based on protection actions and circuit breaker tripping information. Fault criteria are usually set in advance and cannot adapt to changes in the topology of the power grid. After change...

Claims

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