Distributed Autonomous Observation System for Transaction of Electric Energy

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In this study, a series of observation techniques for the electrical power systems by the measurement of the voltage of the customer outlet has been developed. The systems are installed in Japan by using the GPS time synchronization among various places with a method for power system analysis, a data collection method, database system design and a method to collect and store the bulk data, and visualization of analyzed results for the power system dynamics and the frequency control characteristics of interconnected power systems, etc. The system has been applied to the South-East Asian countries such as Thailand, Singapore and Malaysia. The event trigger type data collection, the dynamic system property analysis, and the stabilization control system were developed as feasible applications. The technique for analyzing the flow of the electric power in the house and the building by applying the technique was also developed for the purpose of energy savings. Consequently, the system to observe the electrical energy by using the distributed and autonomous measuring instruments was successfully developed.