Transformer substation starting test wireless nuclear phase debugging method

A debugging method and wireless core technology, applied in the direction of phase sequence/synchronous indication, etc., can solve the problems of harmonic components, long distances between screen cabinets, and large differences in signal amplitude, etc., and achieve the effects of efficient methods, accurate results, and simple measurements

Inactive Publication Date: 2016-09-07
STATE GRID JIANGSU ELECTRIC POWER CO ELECTRIC POWER RES INST +1
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Problems solved by technology

[0004] Aiming at the deficiencies in the prior art, the purpose of the present invention is to provide a simple and efficient method for substation start-up testing and wireless nuclear phase debugging. P

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  • Transformer substation starting test wireless nuclear phase debugging method
  • Transformer substation starting test wireless nuclear phase debugging method

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[0027] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

[0028] Existing substation start-up phase debugging work is realized by using a multimeter to measure the phase-to-be equipment, which essentially reflects the amplitude difference and phase difference between the phases to be checked through the scalar readings of the multimeter. On the one hand, this method has a large deviation in the measurement results when the amplitudes of the phases to be checked are different, the phase difference is unbalanced, and there are harmonic components in the signal; on the other hand, when the screen cabinets of the phases to be checked are far apart It is cumbersome to prepare a long cable, and it is cumbersome to lay out and take up the cable, and it also has a certain impact on the environment in the station ...

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Abstract

The invention relates to a transformer substation starting test wireless nuclear phase debugging method. The method includes the following steps: using a GPS/Big dipper satellite to provide accurate absolute time to a system, supplying a radiofrequency wireless time service module; the radiofrequency wireless time service module using second pulse of the GPS/Big dipper to provide accurate time service pulse to different data acquisition modules; each data acquisition module acquiring a three-phase voltage of a device under nuclear phase, and based on the time service pulse, conducting time stamping on the acquired data, recording generation time of the data, and real-time transmitting the data to a data processing and analyzing terminal through wireless communication; the data processing and analyzing terminal in according with the time when the data is received, processing the data transmitted by the different data acquisition modules, extracting a fundamental component and a phase of the data in different phases, finally displaying data processing results through a display and control platform. According to the invention, the method addresses the problems of large amplitude difference of the device under nuclear phase, containing of harmonic component, and screen cabinet. The method increases accuracy and reliability of work in transformer substation starting nuclear phase debugging.

Description

technical field [0001] The invention relates to a substation start-up test wireless nuclear phase debugging method, which belongs to the technical field of intelligent substation automation. Background technique [0002] During the start-up and commissioning of substations, phase verification is an indispensable task to verify whether the line connection is correct or not, and to avoid swapping wiring with different phase sequences. At present, the multimeter is generally used for the phase verification work in the start-up of the substation. The two probes of the multimeter are connected to the phase sequence of the phase to be verified, and the pressure difference and angle difference of the signals between the phases to be verified are reflected by reading the amplitude of the multimeter. This method has no problem with the test results when the cored phase signals have the same amplitude, phase angle balance, etc., and only contain fundamental wave components. However, ...

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Application Information

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IPC IPC(8): G01R29/18
CPCG01R29/18
Inventor 庞福滨刘玙樊海锋高磊卜强生宋亮亮嵇建飞宋爽
Owner STATE GRID JIANGSU ELECTRIC POWER CO ELECTRIC POWER RES INST
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