De-excitation system performance test analysing method and test analyzer thereof

A technology of test analysis and system performance, applied in the direction of instruments, measuring electronics, measuring devices, etc., can solve the problems that cannot fully and accurately reflect the performance of the demagnetization system, cannot meet the higher requirements for the safe operation of large-capacity generator sets, and achieve Guarantee the effect of safe and reliable operation

Inactive Publication Date: 2009-06-17
南京申瑞电力电子有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The problem to be solved by the present invention is: to overcome the deficiency that the existing test method and testing instrument of the demagnetization system cannot fully and accurately reflect the performance of the demagnetization system, and cannot meet the higher requirements for safe operation of large-capacity generator sets, and propose a A method for testing and analyzing the performance of the demagnetization system and its test analyzer have good specific practical effects, so as to better protect the generator system

Method used

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  • De-excitation system performance test analysing method and test analyzer thereof
  • De-excitation system performance test analysing method and test analyzer thereof
  • De-excitation system performance test analysing method and test analyzer thereof

Examples

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Effect test

Embodiment 1

[0050] Example 1, such as Figure 5 , the voltage V1 of the de-excitation switch in the generator de-excitation system, the voltage V2 of the generator rotor winding, the current V3 in the de-excitation resistance circuit (expressed by the voltage on the shunt), and the current V4 in the de-excitation switch circuit (expressed by the voltage on the shunt Signals such as the current V5 in the generator rotor winding circuit (represented by the voltage on the shunt) are connected to the input interface module 2 as the input signal AI, and after preprocessing such as isolation, filtering, matching, and correction, Send into signal conversion module 3 again and carry out A / D conversion and data acquisition, then send into computer mainboard 1, let the performance analysis module 7 pair acquisition by operator again by the input keyboard control computer mainboard 1 of man-machine interface processor 4 Carry out energy calculation on the voltage and current data of each loop, perfo...

Embodiment 2

[0051] Example 2, such as Figure 5 , the generator rotor winding voltage V2, the current V3 in the demagnetization resistor circuit (expressed by the voltage on the shunt), the current V4 in the demagnetization switch circuit (expressed by the voltage on the shunt), and the current in the generator rotor winding circuit Signals such as V5 (indicated by the voltage on the shunt), generator three-phase stator voltage (V6, V7, V8) are connected to the input interface module 2 as the input signal AI, and pre-processed such as isolation, filtering, matching, and correction Afterwards, send into signal conversion module 3 again and carry out A / D conversion and data collection, then send into computer main board 1, let the performance analysis module 7 be allowed performance analysis module 7 by the input keyboard of man-machine interface processor 4 by the operator again Carry out volt-ampere correlation characteristic analysis to the collected voltage and current data of each loop...

Embodiment 3

[0052] Example 3, such as Figure 5 , take the generator rotor winding voltage V2, the current V3 in the demagnetization resistance circuit (expressed by the voltage on the shunt), the current V5 in the generator rotor winding circuit (expressed by the voltage on the shunt) and other signals as the input signal AI into the input interface module 2, after preprocessing such as isolation, filtering, matching, and correction, and then sent to the signal conversion module 3 for A / D conversion and data acquisition, and then sent to the computer main board 1, and the operator passes the manual The input keyboard of the machine interface processor 4 controls the computer motherboard 1 to allow the performance analysis module 7 to perform spectrum decomposition calculation on the collected voltage and current data of each loop, and then the above-mentioned signals collected are collected on the liquid crystal display terminal of the man-machine interface processor 5 Display the amplit...

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Abstract

The invention relates to a remove-magnetic system performance test analysis method and its test analyzer, the each loop voltage electric current of the remove-magnetic system carries on the succession process analysis, the energy distribution analysis, the volt-ampere related characteristic analysis and the frequency spectrum characteristic analysis, and demonstrates the result, the test analyzer is composed of the computer mother board, the input connection module, the signal transformation module, the monitor and the man-machine connection processor, the communication connection module, the performance analysis module, and also the printer connection module. The invention completely provided a new remove-magnetic system tester with high accuracy, multi- parameters, maturity function, simple operation, and few maintenance quantities, which can fully and accurately reflected the remove-magnetic system performance fit and unfit, effectively safeguarded the power set the security reliable moving, and promoted the remove-magnetic system technology of our country generating set have a larger scale enhancement in design, manufacture, use and so on aspect level.

Description

technical field [0001] The invention relates to the test of the demagnetization system of a generating set, in particular to a performance test and analysis method of the demagnetization system and a test analyzer thereof. Background technique [0002] As an important part of the excitation system of the generator set, the de-excitation system is mainly used to quickly cut off the excitation of the generator when accidents such as short circuit and grounding occur inside and outside the generator, and quickly dissipate the magnetic field energy stored in the excitation winding. Consumed in the demagnetization circuit. Therefore, the main requirement for the generator set demagnetization system is to reliably and quickly consume the magnetic field energy stored in the generator to ensure the safety of the generator set under failure and accident conditions. With the rapid development of my country's electric power industry, the single-unit capacity of generating sets is incr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/00
Inventor 申明冯炜梅玉林
Owner 南京申瑞电力电子有限公司
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