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The Design and Research of the Harmonic Wave Measure Instrument of the No-Load Current in Transformer Based on the Microcomputer

Author: WangZuo
Tutor: ZhouMing; ZhangJinLu
School: North China Electric Power University
Course: Electrical Engineering
Keywords: no-load current harmonic measure instrument the MCU
CLC: TM406
Type: Master's thesis
Year: 2012
Downloads: 17
Quote: 0
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Abstract


The test of the no-load current of the transformer is one of the important projects. We can check that whether the iron-core is fitting for the design standard or not. Also we can learn that the iron-core is good or not by the no-load test.At present in the power system we always use the special harmonic measure instrument which is very dear and the operation is difficult. So it is very necessary to design one harmonic log whose price is low. If the designing is reasonable we also can use it in other harmonic test in power system except only used in the no-load current of the transformer.In this paper, we research the present ways of the harmonic deeply and then we choose a suitable test method. After we survey for the harmonic testing-tool and the need of the factual application and we design the circuit and the software of a harmonic which is based on the knowledge of the MCU and DSP and the suitable choosing for the electronic components.In each chapter of this paper, we introduce the purpose and the significance of this research, the basic knowledge about the digital signal processing, the designing of the hardware circuit and the software, the validate of the experiment and the conclusion. In the last part, we point out that because of the limit of the time and the energy and research cost, we only do the simple trying in order to do deeply research in the following days. In the future we can exert one to perfect the other parts.

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