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Analog input type merging unit phase adjustment method

A technology of phase adjustment and analog quantity, applied in the direction of measuring devices, measuring electrical variables, instruments, etc., can solve the problems of low work efficiency and achieve the effect of low work efficiency and simple operation

Inactive Publication Date: 2017-01-11
XUJI GRP +3
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  • Abstract
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Problems solved by technology

[0004] The invention provides a method for phase adjustment of an analog input type merging unit, which is used to solve the above-mentioned problem of low work efficiency in the phase adjustment process of the merging unit

Method used

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  • Analog input type merging unit phase adjustment method

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Embodiment Construction

[0017] The invention provides a method for phase adjustment of an analog input type merging unit, which is suitable for phase adjustment of an analog input type merging unit. The phase adjustment method is to first select a reference channel, then use a rated delay collector to obtain the sampling time of the merging unit, and calculate the delay of each channel according to the relative phase error between each channel and the reference channel, so as to realize the merging unit phase adjustment.

[0018] The rated delay collector is a fixed delay collector, and the time taken by the collector from collecting the analog quantity to outputting the data is fixed.

[0019] This embodiment provides a method for phase adjustment of an analog input type merging unit, the steps of which are as follows:

[0020] (1) Set up a test environment. The schematic diagram of an analog input type merging unit phase adjustment method provided in this embodiment is as follows figure 1 As show...

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Abstract

The invention provides an analog input type merging unit phase adjustment method, which comprises the steps of firstly selecting a reference channel of a merging unit, connecting one path of the output end of an added amount tester to a tested channel of the merging unit, connecting another path of the output end of the added amount tester to the reference channel of the merging unit through a rated time delay collector, then collecting the output of each channel of the merging unit, calculating a relative phase error of each channel by taking the output of the reference channel as a benchmark, converting the relative phase error into time delay, and thus performing phase adjustment on each channel. The technical scheme provided by the invention can meet an accuracy class required by the merging unit, is simple in operation, and solves a problem of low work efficiency in the process of phase adjustment for the merging unit.

Description

technical field [0001] The invention relates to the technical field of electric power system substation automation, in particular to a method for phase adjustment of an analog input type merging unit. Background technique [0002] The merging unit is an important part of the process layer in the smart substation, and its function is to merge and synchronize the data collected by different transformers. The merging unit can be divided into two types according to different data sources, one is a digital input merging unit, and the other is an analog input merging unit. [0003] Accuracy calibration is required before the analog input type merging unit is produced and leaves the factory. Accuracy correction is divided into amplitude correction and phase adjustment. According to the rated value and theoretical output value set inside the analog input merging unit, the amplitude correction can be completed by automatic adjustment through corresponding tools. However, when adju...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R35/00
CPCG01R35/005
Inventor 朱建斌赵应兵周水斌胡立新马仪成刘晓霞郑业兵
Owner XUJI GRP
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