Marine electric power system fault diagnosis method based on quantum genetic algorithm

A quantum genetic algorithm and fault diagnosis technology, applied in the field of fault diagnosis of ship power system based on quantum genetic algorithm, to achieve the effect of easy online fault diagnosis and accurate fault judgment

Inactive Publication Date: 2014-04-02
NAVAL UNIV OF ENG PLA
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Problems solved by technology

However, there is no clear concept for the fault diagnosis of the ship power system, and its diagnosis method is mainly derived from the fault diagnosis method of the land power system.

Method used

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  • Marine electric power system fault diagnosis method based on quantum genetic algorithm
  • Marine electric power system fault diagnosis method based on quantum genetic algorithm
  • Marine electric power system fault diagnosis method based on quantum genetic algorithm

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Embodiment Construction

[0012] The technical solutions in the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the present invention.

[0013] Ship power system such as figure 1 shown in figure 2 The system shown is a test system, and two failure studies were tested. The test system has a total of 20 elements, 33 circuit breakers and 50 protections.

[0014] The 20 components are numbered sequentially (S 1 ~S 20 ): B1,...,B6; T1,...,T4; L1,...,L10;

[0015] The 33 circuit breakers are numbered sequentially (C 1 ~C 33 ): CB1, CB2, ..., CB33;

[0016] Among the 50 protections, 20 are main protections, 20 are near backup protections, and 10 are far backup protections. The main protection is numbered sequentially (r 1 ~ r 20 ): B1m, ..., B6m; T1m, ..., T4m; L1m, ..., L10m; the near backup protection is numbered in turn (r 21 ~ r 40 ): B1p, ..., B6p; T1p, ..., T4p; L1p, ..., L10p; the remote backup protection is numbered in turn...

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Abstract

The invention provides a marine electric power system fault diagnosis method based on a quantum genetic algorithm. The marine electric power system fault diagnosis method includes steps of a.) determining a fault blackout area by means of topology analysis for a marine electric power system according to fault alarm information after the marine electric power system fails, and determining elements in the blackout area; b.) creating a fault diagnosis mathematical model including joint influences of state relation between main protection and backup protection to a fault diagnosis objective function under the condition of considering rejecting action of protectors or circuit breakers based on the step a.); and c.) solving the fault diagnosis objective function by the aid of the quantum genetic algorithm and representing the fault diagnosis problem by an individual quantum bit code. The fault diagnosis module applicable to the marine electric power system is created, fault can be accurately judged by the aid of information of the protectors and the circuit breakers, and online fault diagnosis of the marine electric power system can be easily realized.

Description

technical field [0001] The invention relates to the field of fault diagnosis of an independent power system, in particular to a method for fault diagnosis of a ship power system based on a quantum genetic algorithm. Background technique [0002] The ship's power system is an independent power system, and the ship's environment is harsh. The power system is very easy to cause multiple faults in a centralized place due to damage or improper operation, resulting in load loss. Due to the small space in the ship's cabin, once the power system Faults are not conducive to field search. Especially during the outbound voyage, the monitoring and elimination of all faults must be completed by the crew. Although the crew has a certain ability to repair faults, in the face of sudden complex faults, especially when the power failure area contains faulty components and non-faulty components, the protection device or circuit breaker refuses to operate or malfunctions, resulting in the expa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/08
Inventor 夏立王家林卜乐平邵英王征
Owner NAVAL UNIV OF ENG PLA
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