The Journal of the Institute of Electrical Installation Engineers of Japan
Online ISSN : 2188-6946
Print ISSN : 0910-0350
ISSN-L : 0910-0350
Volume 34 , Issue 8
Showing 1-24 articles out of 24 articles from the selected issue
  • Katsuhiro Matsuda, Tomihiro Takano, Yoshinori Kataoka, Hiroshi Kobayas ...
    2014 Volume 34 Issue 8 Pages 579-585
    Published: 2014
    Released: September 18, 2014
    The high-voltage customers tend to install excess static capacitors(SC) to improve their power factor(PF) at the interconnection point. This makes the distribution lines PF leading and it needlessly raises voltage. The combination installation of SC and Automatic Power Factor Controller (APFC) is desirable to avoid this power quality degradation problem. However the high initial cost and less discrete control hinders its broad use,especially for small consumers who have only one or two SC. The authors propose a new APFC and SC for such small consumers. The proposed APFC consists of simple electrical components without PT to measure the line voltage,and estimates load reactive power from only CT current values. The new SC has the flexibility to change its capacity in two steps by changing its internal wiring. Their prototype system and evaluation result through the test will be presented in the paper.
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  • [in Japanese]
    2014 Volume 34 Issue 8 Pages 606-610
    Published: August 10, 2014
    Released: September 18, 2014
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