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The increasing penetration of small sized distributed generators within close proximity to each other in distribution systems can bring about negative interactions among them. This paper presents the issues of system and control interactions among several distributed energy resource (DER) controllers that can affect the operation and design of a distribution system. The impact of tuning controllers...
This paper presents a new multiobjective index-based analytical methodology to calculate the optimal size and power factor of distributed generation (DG) unit at various locations. This multiobjective index (IMO) is related to real and reactive power losses. A computational procedure is also developed to specify the best location where the IMO value is the lowest. The results obtained on a 38-bus...
This paper presents the contingency ranking methodology of large interconnected power system for low frequency oscillatory instability problems. The oscillatory instability leading to blackout is often triggered by contingencies, such as line outage. In literatures, so far there is no such methodology presented for contingency ranking related to low frequency oscillatory instability. Two methodologies,...
This paper proposes a simple methodology for placing two principal types of DG units - synchronous machine and induction machine with an objective of enhancing loadability of distribution system. The proposed methodology is based on the concept of reactive power margin. Buses have been ranked based on the reactive power margin and grouped as “strong” and “weak” buses for finding suitable location...
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