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Automatic analysis device for realizing bus differential protection CT (Current Transformer) wiring checking

A busbar differential protection and automatic analysis device technology, applied in the direction of measuring devices, instruments, measuring electricity, etc., can solve the problems of high staff requirements, time-consuming and laborious, and achieve the effects of convenient operation, high reliability and rich functions

Inactive Publication Date: 2011-06-15
西安爱邦电气有限公司
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide an automatic analysis device for CT wiring inspection of busbar differential protection, which solves the time-consuming and labor-intensive judgment of the wiring error of the relay protection line in the prior art only under manual conditions, and the requirements for the staff high problem

Method used

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  • Automatic analysis device for realizing bus differential protection CT (Current Transformer) wiring checking
  • Automatic analysis device for realizing bus differential protection CT (Current Transformer) wiring checking

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Embodiment Construction

[0017] see figure 1 , the automatic analysis device for bus differential protection CT wiring inspection provided by the present invention is mainly composed of AC voltage sampler, A / D converter, processor II (LPC2478) based on the analysis of bus differential protection CT wiring correctness , a liquid crystal display module, a key module, a communication module (RS232) and a zero-crossing detector for determining the phase. The AC voltage sampler includes transformer / current clamp, I / V converter and programmable amplifier. The A / D converter used to convert the analog signal output by the programmable amplifier into a digital signal is connected in series with the AC voltage sampler; it is used to control the display of the liquid crystal display module, the button function of the button module, and the communication module (RS232) The processor II (LPC2478) based on the analysis of the correctness of the busbar differential protection CT wiring for data communication with t...

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Abstract

The invention provides an automatic analysis device for realizing bus differential protection CT (Current Transformer) wiring checking. The device comprises an alternating voltage sampler, an A / D converter connected with the alternating voltage sampler in series, a processor II based on the analysis of the bus differential protection CT wiring correctness, a liquid crystal display module, a key module and a zero passage detector. The automatic analysis device for realizing the bus differential protection CT (Current Transformer) wiring checking has abundant functions and can realize the measurements of voltage, current, frequency and power.

Description

technical field [0001] The invention belongs to the technical field of analysis equipment used in the electric power industry, and in particular relates to an automatic analysis device for CT wiring inspection of busbar differential protection. Background technique [0002] Whether the wiring of the relay protection line is correct or not directly affects the normal operation of the power supply system. Timely analysis of the correctness of relay protection line wiring is an essential link in the construction and maintenance of substations. At present, the analysis of the correctness of relay protection line wiring in power systems is mainly done manually. The traditional manual method of relay protection line wiring analysis has the following shortcomings or deficiencies: [0003] 1. The reliability and accuracy of the analysis results are poor. Since there is no unified operating procedure, there is a certain degree of randomness in the operation; in addition, the level ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/02
Inventor 穆明建
Owner 西安爱邦电气有限公司
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