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A phase-mode transformation matrix design method for three-phase power circuit fault diagnosis

A technology of phase-mode transformation matrix and design method, which is applied in the direction of fault location, measurement of electrical variables, measurement of electricity, etc., can solve the problems of lack of design methods and guidelines

Inactive Publication Date: 2017-12-12
INST OF ELECTRICAL ENG CHINESE ACAD OF SCI
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Problems solved by technology

However, for the parameter design of this new type of phase-mode transformation matrix, there is a lack of a specific design method and criterion in the existing research

Method used

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  • A phase-mode transformation matrix design method for three-phase power circuit fault diagnosis
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  • A phase-mode transformation matrix design method for three-phase power circuit fault diagnosis

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Embodiment Construction

[0093] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0094] figure 1 It is a flow chart of the method principle of the present invention. Such as figure 1 As shown, step 001 is first executed, and the parameters of the phase-mode transformation matrix are designed and selected according to the design criteria. Then, step 002 is executed, and the Gram-Schmidt orthogonalization process is performed on the phase-mode transformation matrix whose parameters have been designed and selected. Finally, step 003 is executed to output the final design result of the phase-mode transformation matrix.

[0095] figure 2 It is a schematic diagram of a specific embodiment of the present invention. Such as figure 2 As shown, step 101 is firstly executed to design and select parameters of the phase-mode transformation matrix. Next, step 102 is executed, and the phase-mode transformation matrix is ​​designe...

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Abstract

The invention provides a phase-mode transformation matrix design method for three-phase power circuit fault diagnosis. The method comprises the steps of firstly designing and selecting parameters of a phase-mode transformation matrix according to design criteria and performing Gram-Schmidt orthogonalization processing on the phase-mode transformation matrix with parameter design and selection being completed to obtain a required final design result of the phase-mode transformation matrix.

Description

technical field [0001] The invention relates to a method for designing a phase-mode transformation matrix for fault diagnosis of three-phase power lines. Background technique [0002] At present, three-phase AC transmission is the most important transmission method in the power system. Power transmission lines are important components for power transmission and distribution in power systems. Most power lines are often directly exposed to the external environment for a long time, which makes the frequency and probability of faults on power lines higher. The failure of power lines will affect the safe and stable operation of the entire power system. If it is not dealt with in time, it may cause serious consequences and bring huge economic losses. [0003] The three-phase power transmission and distribution systems of each voltage level are equipped with corresponding line protection, which can quickly cut off the fault after a line fault occurs and isolate the fault from the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/08
CPCG01R31/088
Inventor 牛耕孔力裴玮齐智平
Owner INST OF ELECTRICAL ENG CHINESE ACAD OF SCI
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