Device and method for transient record analysis and fault precise positioning
A technology of record analysis and precise positioning, which is applied in the direction of fault location and fault detection according to conductor type, etc., can solve the problems that the distance measurement accuracy cannot meet the requirements of the power system, false start, etc., and achieve reliable start and overcome the effect of false start
Inactive Publication Date: 2018-02-16
YUNNAN POWER GRID
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[0004] In order to solve the above problems, the present invention proposes a device and method for transient state record analysis and precise fault location. The present invention can overcome the traditional transient state analysis device that is easily affected by factors such as transition resistance and peer-end collapse current in the impedance ranging method. , the distance measurement accuracy cannot meet the requirements of the power system, overcome the false start-up phenomenon of the traditional fault precise location device, integrate the reliable start-up of the transient analysis device, and the high-precision ranging characteristics of the fault precise location device, and realize the power grid data. Reliable and Stable Monitoring
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[0022] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0023] It should be pointed out that the following detailed description is exemplary and intended to provide further explanation to the present application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
[0024] It should be noted that the terminology used here is only for describing specific implementations, and is not intended to limit the exemplary implementations according to the present application. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural, and it should also be understood that when the terms "comprising" and / or "comprising" are used in this specification, they mean There are features, steps, operations, means, components and / or combinatio...
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The invention discloses a device and method for transient record analysis and fault precise positioning. Different channels are used to synchronously sample power frequency and high frequency traveling wave data under the control of a GPS synchronization pulse, the collected data are stored in different storage intervals, after the occurrence of a fault, the respective storage buffers form corresponding fault recording files, the respective data are subjected to ranging analysis, and finally, a fault report is given based on the overall analysis of the two types of recording data. The device and method in the invention integrate the characteristics of the reliable startup of a transient analysis device and high-precision ranging of a fault precise positioning device, and realize reliable and stable monitoring of the power grid data.
Description
technical field [0001] The invention relates to a device and method for transient record analysis and precise fault location. Background technique [0002] Because the current transient analysis device does not collect the corresponding high-frequency transient data, it only uses the impedance method to measure the distance of the fault point. However, due to the variety of transmission line faults on site, the impedance distance measurement is easily affected by the transition resistance of the transmission line and the collapse of the opposite end. Influenced by factors such as the magnitude of the current, the ranging accuracy cannot meet the requirements of the power system for ranging accuracy. [0003] For precise fault location devices, in most cases, it depends on setting a fixed threshold to judge the way to start recording data. Due to on-site switch operations, lightning strikes, and transient processes such as adjacent line faults, fault data will also be generat...
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IPC IPC(8): G01R31/08
CPCG01R31/085
Inventor 赵明张琳波李本瑜石恒初方毅翟海燕游昊陈剑平
Owner YUNNAN POWER GRID