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The EPRI Open Source Distribution System Simulator, OpenDSS, has been widely used to perform planning studies and research, particularly in the area of Distributed Energy Resources (DER). After being released in 2008 as open source software it has become widely used around the world. One of the features that makes OpenDSS popular is that the package offers interfaces for co-simulation. Initially,...
This paper presents an analysis of the voltage regulation for four wind turbine technologies and compares the reactive power control methods (constant power factor control, active power factor control, and active voltage control). The test system used in this study is a radial distribution circuit with a wind turbine connected at the end of the feeder. The distribution circuit model and the wind turbine...
The IEEE Test Feeders provide a benchmark for the power distribution systems analysis community. This panel summary will provide a discussion of experiences matching the results published by Kersting and Shirek in this panel. [1] Benchmarking the short circuit currents for the Test Feeders is important to users of the Test Feeders for determining whether the system impedances are defined correctly...
The “Smart Grid” refers to various efforts to modernize the power grid through the application of alternate sources of energy and intelligent devices. The present national interest in Smart Grid applications has generated many questions concerning the role of distribution engineering in the future. What features do utility engineers need in distribution system analysis tools to support the future...
Accurate determination of neutral-to-earth voltages (NEV) in multi-grounded distribution circuits can be quite important, particularly in systems where loads are highly unbalanced or have considerable triplen harmonic current content. Some commercially-available and open source software are capable of representing distribution systems in adequate detail for performing NEV analysis. However, results...
Our analysis of a complex Smart Grid control scheme uses simulation to model both the communication network and the power system. The control scheme uses a wireless communication network to activate distributed storage units in a segment of the electrical grid to compensate for temporary loss of power from a solar photovoltaic (PV) array. Our analytical model of the communication network provides...
The “Smart Grid” refers to various efforts to modernize the power grid through the application of intelligent devices. This paper describes current thinking by members of the Distribution System Analysis Subcommittee (DSA SC) on how distribution system analysis might evolve to support the Smart Grid. Various issues related to Smart Grid and distribution system analysis are identified. The essential...
IEEE test cases provide a benchmark for power systems analyses community. The 8500-node test feeder represents a large radial distribution feeder which provides a challenging circuit for distribution studies. The 8500-node test feeder includes many elements that may be found on a North American medium voltage (MV) distribution feeder: multiple feeder regulators, per-phase capacitor control, feeder...
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