This paper presents an application scenario in which knowledge-based and object oriented modeling techniques are applied and used in the analysis and design of complex, computer-based systems. The methodology is presented in the context of an operations automation and information management system in the electric utility operations problem domain. This system is referred to as OAS, for Operatio...

electric power industry have always try to provide reliable electricity to customers and at the same time decrease system costs. high voltage circuit-breakers are an essential part of the power network. this study has developed a maintenance and replacement scheduling model for high voltage circuit- breakers that minimize maintenance costs while maintaining the acceptable reliability. this mode...

A remote monitoring and recording system for power devices is developed in this paper. It aims at the application of the technology of wireless transmission and signal processing in the transmission of the signals of long-distance electric equipment to the central control station. The terminal visualizes its working states in pictorial system and saves all the historical data into general datab...

Using permanent magnets on a rotor can both simplify the design and increase the efficiency of electric machines compared to using electromagnets. A drawback, however, is the lack of existing automated assembly methods for large machines. This paper presents and motivates a method for robotized surface mounting of permanent magnets on electric machine rotors. The translator of the Uppsala Unive...

Hajime Urai, Dr. Eng. Takahide Matsuo Hiroaki Hashimoto Tatsuro Kato, Dr. Eng. OVERVIEW: The market for electric power transmission systems is expected to grow strongly, driven by growing demand for electric power in emerging economies and the adoption of renewable energy. Transformers, circuit breakers, and switchgear are important components of these electric power transmission systems. The e...

In this paper we present the design of a rechargeable battery storage device for use in an all-electric ship. The purpose of this device is to provide power of predictable quality to selected equipment. In addition a recharging unit is proposed for recharging the battery from the ship’s electric bus.

INTRODuCTION POWER electronics is a technology for using power devices to convert efficiently electric power into the optimum characteristics. As a key component for improving the energy efficiency and performance of various equipment, power electronics contributes to the realization of both a prosperous and comfortable way of life and a sustainable society by reducing CO2 (carbon dioxide) emis...