DISTRIBUTION SYSTEM AND ZERO-PHASE CIRCUIT REGULATING DEVICE FOR DISTRIBUTION SYSTEM

PROBLEM TO BE SOLVED: To provide a distribution line protection system capable of attaining a stable operation of a protective relay in the event that the distribution line has some accident. SOLUTION: This system regulates various types of electric variables of the zero-phase circuit by intensively...

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Bibliographische Detailangaben
Hauptverfasser:	NISHIJIMA KAZUO, SHIMAMURA HIDEHIKO, SHIBATA EKIZO
Format:	Patent
Sprache:	eng
Schlagworte:	CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRICITY EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS GENERATION REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGYGENERATION, TRANSMISSION OR DISTRIBUTION SYSTEMS FOR STORING ELECTRIC ENERGY TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a distribution line protection system capable of attaining a stable operation of a protective relay in the event that the distribution line has some accident. SOLUTION: This system regulates various types of electric variables of the zero-phase circuit by intensively or dispersively mounting an impedance component adjusting function necessary for directly changing the zero-phase circuit constant in the distribution equipment or the distribution line mounted on the distribution system. To solve the above issue, capacitor capacitance is previously assembled in between the grounds of each of phase in the distribution equipment installed on the distribution line, and ground electrostatic capacity is adjusted. In particular, this system provides ground fault current which the protective relay mounted on a distribution line outlet in the event of an accident such as the distribution line ground fault, becomes a stable operation area, by intensively or dispersively mounting the distribution equipment with the ground electrostatic capacity on the distribution line. COPYRIGHT: (C)2004,JPO