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This paper discusses methods and criteria for the assessment of the low voltage ride-through (LVRT) needs of the power grid. Simulation techniques are used to investigate both how voltage dips caused by short-circuits spread over the grid and what impact do they cause in the operation performance of power systems with wind generation. The analysis is performed for wind turbines (WT) with different...
This work deals with the development of a digital power quality meter to comply with the new standard which regulates the Power Quality requirements in Brazil. The purpose was to develop a low cost device able to monitor the main standard indices such as the steady state RMS voltage, harmonic distortion, voltage fluctuation, voltage unbalance, voltage sags and swells, and power supply interruptions...
In response to the escalating energy crisis and related pollution problems verified worldwide, it is essential to assume new energy technologies that use renewable energy sources in an efficient and environmentally friendly manner. However, widespread implementation of these sources will be more attractive only if they operate together with energy storage technologies. Besides, a successful storage...
An integrated electrical energy and power quality monitoring system was implemented over more than 250 location in the electric power distribution system of ELEKTRO, a utility company in the south-east of Brazil. Harmonics, short-duration voltage variation (voltage sags, voltage swells and interruptions), voltage imbalance, frequency deviation, and other power quality disturbances were monitored over...
South America is facing important challenges in electricity supply to allow for future economic development. Current electricity market designs are being reviewed to avoid supply difficulties and couple with existing outlook of primary energy resources and investment interest by the private sector. Examples of these developments are the giant Brazil, the economically troubled Argentina, and the pioneer...
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