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2 results on '"Wide band frequency response"'

1. A modified lumped parameter model of distribution transformer winding

Author

Qingqing Ding, Yao Yao, Bingqian Wang, Jingwei Fu, Wei Zhang, Chao Zeng, Xiaoping Li, and Stanimir Valtchev

Subjects
Wide band frequency response, Distributed parameter model, Lumped parameter model, Distribution transformer, Lightning protection, Energy conservation, TJ163.26-163.5, Energy industries. Energy policy. Fuel trade, HD9502-9502.5
Abstract

The modelling of the distribution transformer winding is the starting point and serves as important basis for the transformer characteristics analysis and the lightning pulse response prediction. A distributed parameters model can depict the winding characteristics accurately, but it requires complex calculations. Lumped parameter model requires less calculations, but its applicable frequency range is not wide. This paper studies the amplitude-frequency characteristics of the lightning wave, compares the transformer modelling methods and finally proposes a modified lumped parameter model, based on the above comparison. The proposed model minimizes the errors provoked by the lumped parameter approximation, and the hyperbolic functions of the distributed parameter model. By this modification it becomes possible to accurately describe the winding characteristics and rapidly obtain the node voltage response. The proposed model can provide theoretical and experimental support to lightning protection of the distribution transformer.

Published
2020
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2. A modified lumped parameter model of distribution transformer winding

Author

Yao Yao, Jingwei Fu, Bingqian Wang, Wei Zhang, Qingqing Ding, Chao Zeng, Stanimir Valtchev, Li Xiaoping, DEE2010-B1 Energia, and DEE - Departamento de Engenharia Electrotécnica e de Computadores

Subjects
Computer science, Lumped parameter model, Distributed parameter model, Energy Engineering and Power Technology, Distribution transformer, lcsh:HD9502-9502.5, law.invention, Wide band frequency response, Modelling methods, Control theory, law, Voltage response, lcsh:TJ163.26-163.5, SDG 7 - Affordable and Clean Energy, Electrical and Electronic Engineering, Transformer, Lightning protection, Pulse response, Renewable Energy, Sustainability and the Environment, Hyperbolic function, lcsh:Energy industries. Energy policy. Fuel trade, lcsh:Energy conservation, Control and Systems Engineering, Automotive Engineering
Abstract

This work was supported by the National Key Research and Development Plan of China under Grant (2016YFB0900600XXX). The modelling of the distribution transformer winding is the starting point and serves as important basis for the transformer characteristics analysis and the lightning pulse response prediction. A distributed parameters model can depict the winding characteristics accurately, but it requires complex calculations. Lumped parameter model requires less calculations, but its applicable frequency range is not wide. This paper studies the amplitude-frequency characteristics of the lightning wave, compares the transformer modelling methods and finally proposes a modified lumped parameter model, based on the above comparison. The proposed model minimizes the errors provoked by the lumped parameter approximation, and the hyperbolic functions of the distributed parameter model. By this modification it becomes possible to accurately describe the winding characteristics and rapidly obtain the node voltage response. The proposed model can provide theoretical and experimental support to lightning protection of the distribution transformer. publishersversion published

Published
2020

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