Totally automated switching operation in distribution system

Aoki, Kenichi; Nara, Koichi; Satoh, T.; Itoh, Masaru; Kuwabara, H.; Kitagawa, Minoru; Yamanaka, Kazuya

doi:10.1109/61.107322

Cited by 15 publications

(2 citation statements)

References 15 publications

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“…T has been 20 years since Distribution Automation (DA) systems including the optimal load transferring and fault restoration functions began in Japan [1]. Currently, most distribution feeders have been automated, and the aged DA facilities must be replaced.…”

Section: Introductionmentioning

confidence: 99%

A loss minimum re-configuration algorithm of distribution systems under three-phase unbalanced condition

Tanabe

Funabashi

Nara

et al. 2008

2008 IEEE Power and Energy Society General Meeting - Conversion and Delivery of Electrical Energy in the 21st Century

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Many single phase distributed generators (DGs) -such as solar cells, small scale gas-engine CHP systems, etc. -are being installed in an electric power distribution system in recent years. These distributed generators are not always generating steady power due to the weather conditions or hot-water demand conditions, etc. Therefore, DGs could make "balanced threephase load" unbalanced. Unexpected load unbalance creates many unpredicted problems in power distribution systems: voltage unbalances, frequency deviations, etc. It is also known that the loss minimum normal open sectionalizing switch positions for three phase unbalanced conditions are not the same as the ones calculated by assuming three-phase balanced. Therefore, a method to find the optimal normal open sectionalizing switch positions that minimize both distribution loss and three phase unbalance is required. The problem is the multi-objective planning problem, and the palate solution must be found. In this paper, a solution algorithm for loss minimum re-configuration is explained and several numerical examples are shown.

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Section: Introductionmentioning

confidence: 99%

A loss minimum re-configuration algorithm of distribution systems under three-phase unbalanced condition

Tanabe

Funabashi

Nara

et al. 2008

2008 IEEE Power and Energy Society General Meeting - Conversion and Delivery of Electrical Energy in the 21st Century

Self Cite

View full text Add to dashboard Cite

show abstract

“…T has been 20 years since Distribution Automation (DA) including the optimal load transfer and fault restoration began in Japan [1]. Currently, most distribution feeders have been automated, and the aged DA facilities must be considered to be replaced.…”

Section: Introductionmentioning

confidence: 99%

New Technology and Benefits of Distribution Automation in Japan

Nara

Tanaka

Funabashi

2007

2007 IEEE Power Engineering Society General Meeting

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Innovation of Distribution Automation (DA) including the optimal load transfer and fault restoration began around 20 years ago in Japan. Since then, most distribution feeders are automated, and the aged DA facilities must be considered to be replaced. In replacing the system, new concepts must be introduced to the system. Namely, the small DA systems in business offices are unified and integrated into the ones in the branch of the company, and the supervised area or controlled area of one DA system becomes wider than those of the existing system. The DA functions are also innovated. On the other hand, new trend of distribution system is a connection of such distributed generators (DGs) as solar cells and co-generation systems as gas engines or fuel cells. The functions to cope with DGs are also installed to the new system. Caused by a connection of single phase DGs, 3-phase unbalance must be considered to control distribution systems. A load transfer technology in which 3-phase power flow is implemented is illustrated as a new trend for a future power distribution system. Some beneficial analysis for including 3-phase power flow in distribution automation system is also shown.

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A new algorithm for service restoration in large-scale urban distribution systems

Nahman

Štrbac

1994

Electric Power Systems Research

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Totally automated switching operation in distribution system

Cited by 15 publications

References 15 publications

A loss minimum re-configuration algorithm of distribution systems under three-phase unbalanced condition

A loss minimum re-configuration algorithm of distribution systems under three-phase unbalanced condition

New Technology and Benefits of Distribution Automation in Japan

A new algorithm for service restoration in large-scale urban distribution systems

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