A Blackout Area Recognition Method for Grid Fault Diagnosis
A technology for area identification and power grid faults, which is applied in the field of online fault diagnosis of electric power network and power outage area identification of power grid fault diagnosis, and can solve problems such as difficulty in identifying power outage areas, circuit breaker refusal to operate, circuit breaker alarm information missing, etc.
Active Publication Date: 2021-04-23
SHANGHAI MUNICIPAL ENG DESIGN INST GRP
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Problems solved by technology
After a fault occurs, the circuit breaker may refuse to operate, or the alarm information of the circuit breaker may be missed, which brings difficulties to the identification of the blackout area, so it should be fully considered in the identification process
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[0027]In order to make the objects, technical solutions, and advantages of the present invention more clearly, the technical solutions in the embodiments of the present invention will be clearly described, apparent from the embodiments of the present invention. SUMMARY OF THE INVENTION Examples, not all of the embodiments. Based on the embodiments of the present invention, there are all other embodiments obtained without making creative labor without making creative labor premises.
[0028]Such asfigure 1 As shown, the present embodiment discloses a power-off region identification method for grid fault diagnosis. According to the circuit breaker alert information received within a fixed time window, according to the fault, the circuit breaker alert information is set, and three steps are set. To identify the power outages, components in the power outage are used as the fault diagnosis framework.
[0029]Power grid topology with no map Gr(V (g)r), E (grThe form is shown, and stored in an a...
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The invention discloses a power outage area identification method for power grid fault diagnosis. The method expresses the power grid topology in the form of an undirected graph and stores it in the form of an adjacency matrix. The identification process mainly includes the following steps: A. According to the network topology diagram and the circuit breaker information received by the dispatching system after a failure, calculate the passive area, that is, the blackout area; B. According to the network topology diagram, the circuit breaker information received by the dispatching system after a failure, and the Calculate the non-matching circuit breaker information set for the outage area; C, calculate the maximum passive area corresponding to the non-matching circuit breaker information set according to the electrical network topology diagram and the non-matching circuit breaker information set obtained in step B; Finally, the outage area that can be used for grid fault diagnosis is obtained. The algorithm of the invention fully considers the uncertainty caused by the information loss of the alarm information after the failure, and improves the accuracy of diagnosis.
Description
Technical field[0001]The present invention relates to the field of power network fault diagnosis, and in particular, there is a online fault diagnosis method of a power network, and is specifically a power failure region identification method for grid fault diagnosis.Background technique[0002]The fault diagnosis technology is analyzed by analyzing the alarm information received by the fault, and quickly and accurately identifies the fault area and the nature of the fault. The resulting result can be a staff member during the accident recovery process after the failure Provide assistance decisions, reducing the adverse effects caused by the occurrence of faults. The fault diagnosis technology is a hot problem that has been concerned with the field of power, but many fault diagnosis technology has also been made with the uncertainty of the grid structure and operation mechanism gradually complicates, the interconnection of the grid structure and operation mechanism. Exhibit drawbacks,...
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IPC IPC(8): G01R31/08
CPCG01R31/088
Inventor 陆继诚王萍李翊君温杰南萌周妮娜屠友强赵星黄旭峰
Owner SHANGHAI MUNICIPAL ENG DESIGN INST GRP