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The Design of Transformer Power Characteristic Analyzer

Author: WangXin
Tutor: ChangTieYuan
School: Hebei University
Course: Communication and Information System
Keywords: no-load test load test ARM AD7656
CLC: TM402
Type: Master's thesis
Year: 2009
Downloads: 29
Quote: 0
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Abstract


The transformer is one of the essential equipments that can transport electrical energy. The quality and reliability of the transformer is received extensive attention, therefore the detection of transformer is very important.The load test' dissertation">no-load test, load test of transformer can achieve the purpose of detection. Response to these tests, we have been developed analyzer of characteristics of the transformer power.The transformer power characteristic analyzer mainly includes the hardware and the software. The hardware is composed of two PCBs. they are the main controlling board and the signal gathering board. Data acquisition circuit as a key part, selecting CPLD as the core of data acquisition, using the analog-digital conversion chip AD7656. has completed a multi-channel data acquisition simultaneously. CPLD controls data collection, and the collection of data is sent to the FIFO. ARM as its microcontroller, notice that CPLD collects date and deals with it. Software uses VHDL to complete data acquisition modules and uses C to complete host control module, man-machine interface module. According to the three-phase electricity elementary knowledge, we use the root-mean-square value algorithm to complete the voltage, the electric current, the active power,the reactive power, the apparent power and the power factor computation.This instrument may carry on no-load test, load test, and has completed the transformer examination goal. The results through the liquid crystal display accurate survey.can be stored the in U plate or be printed out. Because the equipment is simple, readability strong and other merits, this kind of power characteristic analyzer has the broad market and the prospects for development.

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CLC: > Industrial Technology > Electrotechnical > Transformers, converters and reactors > General issues > Design
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