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Featured researches published by Tatsuya Harada.


2000 IEEE Power Engineering Society Winter Meeting. Conference Proceedings (Cat. No.00CH37077) | 2000

Development of Japan's National Standard Class 500 kV lightning impulse voltage divider

Tatsuya Harada; Takayuki Wakimoto; S. Sato; Masamori Saeki

This paper describes the details of the Japans 500 kV National Standard Class Divider whose unit response parameters are measured to be better than the already developed 700 kV Reference Divider, which fulfils IEC-60060 requirements. The 500 kV divider has a specially tuned compensating circuit in the low voltage arm, making its unit step response quite close to an ideal. Also in the paper, the tuning technique, which makes the experimental response time almost zero, is discussed.


High Voltage Engineering, 1999. Eleventh International Symposium on (Conf. Publ. No. 467) | 1999

Development of National Standard Class Reference Divider for impulse voltage measurements

Tatsuya Harada; T. Wakimoto; S. Sato; M. Saeki


international power engineering conference | 2005

IEC 60060- 1 Requirements in Impulse Current Waveform Parameters

Shuji Sato; Tatsuya Harada; Masahiro Hanai


Ieej Transactions on Power and Energy | 2002

Development of Impulse Calibrator and Its Performance Evaluation

Takayuki Wakimoto; Tatsuya Harada; Shuji Sato; Masamori Saeki; Hiroyuki Shimizu


Ieej Transactions on Fundamentals and Materials | 2000

Numerical Convolution Technique in Analysing the Lightning Impulse Voltage Measuring System

Shuji Sato; Koji Kato; Tatsuya Harada; Takayuki Wakimoto; Masamori Saeki; Sumiko Sakaguchi; Kosuke Iida


Ieej Transactions on Power and Energy | 1998

High Precision Determination Methods of Time to Peak of Switching Impulse Voltage

Takayuki Wakimoto; Shuji Sato; Tatsuya Harada; Masamori Saeki


Ieej Transactions on Fundamentals and Materials | 2001

The Unit Step Response Analysis for a Resistive easuring Cable

Shuji Sato; Kosuke Iida; Tatsuya Harada; Takayuki Wakimoto; Masamori Saeki; Sumiko Sakaguchi


Ieej Transactions on Fundamentals and Materials | 2001

A Study on Impulse Parameter Estimation for Switching Impulse Voltage

Shuji Sato; Tomoaki Ito; Tatsuya Harada; Takayuki Wakimoto; Masamori Saeki


Ieej Transactions on Power and Energy | 2000

Distortion of the Output Voltage due to Impulse Voltage Calibrator's Switching Characteristics

Shuji Sato; Koji Kato; Toru Takahashi; Tatsuya Harada; Takayuki Wakimoto; Masamori Saeki


Ieej Transactions on Fundamentals and Materials | 1998

Step Response Time Error of RC Distributed Line by Approximating Discrete Elements

Shuji Sato; Junji Kobori; Tatsuya Harada; Masamori Saeki; Takayuki Wakimoto

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Masamori Saeki

Nippon Institute of Technology

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Takayuki Wakimoto

Nippon Institute of Technology

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Yasuhide Kashiwagi

Nippon Institute of Technology

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Koji Kato

Utsunomiya University

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Hiroyuki Shimizu

Nippon Institute of Technology

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