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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: 2007-11-07
南京申瑞电力电子有限公司
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  • 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

[0049] Embodiment 1, as shown in Figure 5, in the generator de-excitation system, the de-excitation switch voltage V1, the generator rotor winding voltage V2, the current V3 in the de-excitation resistance circuit (represented by the voltage on the shunt), and the de-excitation switch circuit Current V4 (indicated by the voltage on the shunt), current V5 in the generator rotor winding circuit (indicated by the voltage on the shunt) and other signals are connected to the input interface module 2 as the input signal AI, after isolation, filtering, and matching , rectification and other pretreatments, then sent to the signal conversion module 3 for A / D conversion and data acquisition, then sent to the computer motherboard 1, and then the operator controls the computer motherboard 1 through the input keyboard of the man-machine interface processor 4 Let the performance analysis module 7 perform energy calculation on the collected voltage and current data of each loop, perform timin...

Embodiment 2

[0050] Embodiment 2, as Fig. 5, current V3 (expressed with the voltage on the shunt) in the generator rotor winding voltage V2, the demagnetization resistance circuit, current V4 (expressed with the voltage on the shunt) in the demagnetization switch circuit, The current V5 in the generator rotor winding circuit (represented by the voltage on the shunt), the generator three-phase stator voltage (V6, V7, V8) and other signals are connected to the input interface module 2 as the input signal AI for isolation and filtering , matching, rectification, etc., and then sent to the signal conversion module 3 for A / D conversion and data acquisition, and then sent to the computer motherboard 1, and then the operator controls the computer mainframe through the input keyboard of the man-machine interface processor 4 Board 1 allows the performance analysis module 7 to perform volt-ampere correlation characteristic analysis on the collected voltage and current data of each loop, and then use ...

Embodiment 3

[0051] Embodiment 3, as shown in Figure 5, the generator rotor winding voltage V2, the current V3 (expressed with the voltage on the shunt) in the demagnetization resistance circuit, and the current V5 (expressed with the voltage on the shunt) in the generator rotor winding circuit The signal is connected to the input interface module 2 as the input signal AI, and after preprocessing such as isolation, filtering, matching, and correction, it is sent to the signal conversion module 3 for A / D conversion and data acquisition, and then sent to the computer motherboard 1. The operator controls the computer motherboard 1 through the input keyboard of the man-machine interface processor 4 to let the performance analysis module 7 perform spectrum decomposition calculation on the voltage and current data of each loop collected, and then display it on the liquid crystal display terminal of the man-machine interface processor 5 The above-mentioned collected signals will 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 ...

Claims

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Application Information

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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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