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Development of weatherproof mobile impulse voltage generator and its application to experiments on nonlinearity of grounding resistance
Author(s) -
Morimoto Atsuo,
Hayashida Hiroshi,
Sekioka Shozo,
Isokawa Masahiko,
Hiyama Tatsuya,
Mori Hitoshi
Publication year - 1996
Publication title -
electrical engineering in japan
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.136
H-Index - 28
eISSN - 1520-6416
pISSN - 0424-7760
DOI - 10.1002/eej.4391170503
Subject(s) - impulse generator , impulse (physics) , ground , electrical engineering , voltage , engineering , acoustics , physics , quantum mechanics
This paper describes a newly developed impulse voltage generator (IG). It has the following features: (1) The IG consists of three components (a 1.6 MV unit, a 1.4‐MV unit and a base box); this facilitates mounting on 10‐ton trucks, therefore making it easier to move to a test field. (2) Capacitors, discharge gaps and a control unit are enclosed in fiber‐reinforced plastics, making it possible to use the IG in all weather. (3) The IG can generate several ten kA when a load is a few ten Ω. (4) Composition of the circuits for lightning/switching impulse voltage/current tests can be easily done by changing the damping and discharge resistance cassettes. Control and data acquisition are made by personal computer. For IG application during an outdoor test, this paper presents the characteristics of resistances of a 77‐kV substation grounding and a concrete pole when applying a high impulse current. The resistances are dependent on the crest value of the applied current.