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This paper presents an extended impedance-based fault location formulation for unbalanced distributed generation systems. In recent years, distributed generation has become an efficient and economical alternative to produce energy. However, the high penetration of distributed generators changes the magnitude and direction of the fault currents affecting the accuracy of impedance-based fault location...
Installing Distributed Generators (DG) in distribution networks brings many advantages such as improving voltage and power quality, mitigating voltage sags, improving transmission system congestion and providing more affordable capacity for utilizing renewable energy resources. All of those factors lead utility companies to integrate DGs into current distribution networks as much as possible. This...
Distribution systems are changing from a one-source supplying structure into a multisource supplying structure with participations of distributed generations (DGs). These changes face problems caused by DGs. This paper considers typical problems, such as system operating limits, reach reduction of utility relay, and the fault ride-through requirement from distribution system operators (DSOs) in order...
This paper presents a comprehensive analysis of the impact of Distributed Generator Interface Transformer (DGIT) configuration on Temporary Over Voltage (TOV) on the healthy phases in a distribution feeder during an unsymmetrical fault. Three common types of transformer configurations are investigated both analytically and using EMTDC/PSCAD. Subsequently, an in-depth study of the effectiveness of...
This paper presents an extended impedance-based formulation for fault location on deregulated electric power distribution systems. Distribution feeders are inherently unbalanced and traditionally radial. Deregulated distribution systems can have distributed generation, which changes the fault period power flow and decreases the accuracy of current state-of-the-art impedance based fault location formulations...
The author worked on distributed generation (DG) connected to the transmission and distribution GRIDS of Ontario Hydro, from 1985 to 1999. During that period, he has experienced lots of technical problems in connecting to the GRID. In this paper, he would discuss his experiences with the following topics: 1) Types of DG's, including sources of prime power (e.g. water, gas, wind, solar, etc.) in brief...
Electrical power production from distributed generation (DG) is playing an increasing role in the supply of electricity in liberalised electricity markets. Currently DG is attracting both distribution utilities and electricity users, as it can provide meaningful advantages to both. The increasing demand on the distribution network (DN) imposed by new DG such as renewable sources and Combined Heat...
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