The realization of the feeder automation function in distribution automation systems

Currently, self-healing is one of the most important functions in the smart grid. Meanwhile, fault detection, isolation, and restoration of feeder automation systems dominate the self-healing function in power distribution systems. The steps of the aforementioned function depend on the fault flag status of the feeder terminal unit. The conditions for setting this flag are judged by the feeder terminal unit overcurrent detecting curve. This paper found an efficient approach to calculate this curve via a half-interval method. Versatile application software with the curve plotting capability was also developed and deployed on the web server of the information-management department of Taiwan Power Company and is running successfully.

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Relay coordination analysis and protection solutions for smart grid distribution systems

Turan¹,

Gökalp²

2016

Turk J Elec Eng & Comp Sci

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Growing complexity of conventional power grids and their management, increasing power demand and energy quality expectations considering grid reliability, and efficiency and security concerns have triggered the evolution of smart grids. This is an expected result of implementing new technologies in existing grids, including renewable sources such as wind turbines and photovoltaic modules. With implementation of such new elements to the system, the protection concept should be considered by system regulators. In order to analyze protection problems, simulation-based analysis should be carried out before high-cost experimental studies. In this study, a simulation-based evaluation for a smart gridbased distribution system is performed. System simulations are realized considering different fault cases and optimum operating conditions are obtained. A ring grid is designed including a generator and a wind turbine as sources and variable loads as consumers. Several points in the grid are selected as fault locations, and the condition of connecting distributed generation plants to the grid is evaluated in the MATLAB/Simulink environment. This study presents an analysis about the possibility of forming a grid with high reliability and efficiency under fault conditions.

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The realization of the feeder automation function in distribution automation systems

Cited by 3 publications

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Key Management for Feeder Automation Systems with Centralized Mode

Key Management for Feeder Automation Systems with Centralized Mode

Half-Interval Method Applied in Feeder Terminal Unit Overcurrent Detecting Curve Setting

Relay coordination analysis and protection solutions for smart grid distribution systems

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