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A software framework for optimization of multiple base stations in a large-scale network is presented. It is designed for use in WiMAX systems operating in the 1.8-GHz band, reserved for Canadian utilities. The proposed algorithm makes use of the Longley-Rice irregular terrain model (ITM) version 3.0, as provided by the Federal Communications Commission (FCC), to compute path loss. The framework is...
Designing and constructing wind farms free of harmonics remain an ongoing challenge for the power industry. To ensure system stability and asset longevity, locally generated harmonics should be regularly monitored, evaluated and filtered when exceeding industry standard limits. This paper investigates harmonic impacts on wind farms under various operating conditions. MATLAB simulation was conducted...
With increasing number of renewable energy installations being added to the Ontario electrical grid, many local distribution companies have raised concerns regarding harmonic impact(s) on the distribution system. The majority of such renewable energy sources consist of solid-state inverters, which can potentially cause damage to utility equipment and appliances due to their high harmonic profiles...
This paper investigates the effect of harmonics due to renewable generation, energy-saving home appliances and electric vehicle chargers. Harmonics were found to be contained at the transmission level due to the presence of shunt capacitors. These shunt capacitors behave like single-tuned or high-pass harmonic filters, however there will be an increased risk of harmonic resonance making the transmission...
The mass introduction of solid-state converters used in green energy sources (solar/wind) and modern loads (electric vehicles, smart appliances) results in many power quality challenges. Utility assets ranging from distribution apparatus to power protection and control devices can potentially be affected by poor power quality. This includes power transformers and monitoring instruments (current and...
With more modern power loads and green energy sources being introduced to the market every day, the existing power grid is becoming increasingly strained. Compounding this problem is aging utility infrastructure and consistent growth in energy demand. Such stresses are applied across major utility assets (transformers, transmission lines, feeders) as well as protection/control apparatus. To accommodate...
Electric vehicles and renewable energy sources typically generate distorted current waveforms (harmonics). As consumer adoption of these technologies increases, it is expected that harmonics will accumulate resulting in poor power quality and degradation of smart grid performance. Such impacts would affect many sectors including utilities, auto manufacturers, and renewable energy producers. For research,...
Electric and plug-in hybrid electric vehicles typically utilize multi level chargers which are powered by solid-state converters. These converters increase harmonic levels which can potentially impact adjacent residential loads as well as the local distribution grid. Such impacts will become more prevalent in the near future as electric vehicle adoption increases. This paper investigates the harmonic...
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