A new large scale DAS in CEPCO

The Chubu Electric Power Company (CEPCO) has developed the distribution automation system (DAS) by using minicomputers which monitor and control large and complex distribution networks with maximum reliability and promptness. A significant curtailment of the restoration operation time due to the occurrence of faults is expected by the introduction of the DAS. The authors introduce the DAS that was installed at CEPCO´s Kita Utility Office in December 1989 and report on its operation performance. The objectives of the DAS are to enhance the reliability of the power supply, to improve the service quality for customers, and to improve the efficiency in facility utilization. The DAS connects the utility office online with the supervisory control and data acquisition (SCADA) system at the control center and the total distribution management system at the head office, and it has unique functions that will contribute to integrated distribution automation