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Transient parameter automatic calculating method of generating set waveform recorder

A waveform recorder and generator set technology, which is applied in the direction of motor generator testing, instrumentation, AC/pulse peak measurement, etc., can solve problems such as automatic calculation, achieve simple algorithm, high degree of intelligence, and avoid inaccurate test data Effect

Active Publication Date: 2017-10-24
中国船舶重工集团公司第七〇三研究所
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Problems solved by technology

However, none of them can automatically calculate transient parameters according to the transient waveform curve of the generator set, such as calculating the transient regulation rate and stabilization time, transient voltage change rate and stabilization time that represent important performance indicators of the generator set, etc.

Method used

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  • Transient parameter automatic calculating method of generating set waveform recorder

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Embodiment Construction

[0024] Reference figure 1 , An automatic calculation method for transient parameters of generator set waveform recorder, the calculation method is:

[0025] The first step is to automatically and accurately draw the peak envelope curve of the AC voltage signal according to the collected AC voltage transient waveform curve. The specific steps adopted by this method include:

[0026] a) According to the collected waveform curve, find all the zero crossing points U of the AC voltage curve 01 , U 02 ……U 0N (Ie the point where the instantaneous value of the voltage is zero);

[0027] b), between every two adjacent zero crossings, find the instantaneous peak U P1 , U P2 ……U PN-1 (Ie the maximum value between two zero crossing points on the waveform curve), and record the instant T corresponding to the instantaneous peak P1 , T P2 ……T PN-1 ;

[0028] c) According to the instantaneous peak value U P1 , U P2 ……U PN-1 And corresponding time T P1 , T P2 ……T PN-1 , You can draw the peak envelope...

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Abstract

The invention belongs to the technical field of a generating set, and specifically relates to a transient parameter automatic calculating method of a generating set waveform recorder. The transient parameter automatic calculating method of a generating set waveform recorder includes the steps: calculating the transient regulate rate and stabilization time, and the transient voltage change rate and stabilization time of a generating set; combining with rated parameters of the generating set, according to the alternating-current voltage transient waveform curve acquired by a generating set waveform recorder, automatically and accurately drawing the peak value envelope curve of the alternating-current voltage signal; according to the drawn peak value envelope curve or the rotating speed transient waveform curve, accurately capturing the transient value and the corresponding time when the transient change occurs in the waveform, and when the transient change occurs in extremum and when stable operation is recovered; and combining with the rated parameters of the generating set, automatically calculating the transient parameters of the generating set, such as the transient regulate rate and stabilization time, and the transient voltage change rate and stabilization time. When a test person performs a generating set transient parameter test, only the rated parameters of the generating set are given, thus greatly reducing the work load of the test person.

Description

Technical field: [0001] The invention belongs to the technical field of generator set detection, and in particular relates to a method for automatically calculating transient parameters of a generator set waveform recorder. Background technique: [0002] The generator set waveform recorder is widely used in the performance test and maintenance of the generator set. It is mainly used for real-time collection, display, storage and routine calculation of the voltage, current, speed and other parameters of the generator set. At present, the generator set waveform recorders on the market all have a wealth of software components for realizing effective value calculation, power calculation, spectrum analysis, harmonic analysis, curve analysis and other operations. However, they cannot automatically calculate transient parameters based on the transient waveform curve of the generator set, such as calculating the transient modulation rate and stabilization time, the transient voltage chan...

Claims

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Application Information

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IPC IPC(8): G01R31/34G01R19/04G01P3/00
CPCG01P3/00G01R19/04G01R31/34
Inventor 俞希学张波关磊戴志伟张嵩彪
Owner 中国船舶重工集团公司第七〇三研究所
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