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Voltage sag is one of the common and sensitive issues for customers and power system utilities. When voltage sag occurs at supply end will cause shutdown of the entire industrial operation process, it incurs financial and technical losses to the industries. Among various industrial processes, adjustable speed drives are more commonly used. According to data obtained from experimental tests performed...
This paper presents a method for the assessment of voltage sags caused by short-circuit faults in a large chemical industry. The supply arrangement for the industry is discussed. The connected equipment of the industry is fed from the 6.6-kV bus. The voltage sag analysis is performed for faults at different voltage levels in the power supply network. For every voltage level, the critical distance...
This paper presents a method for assessment of voltage sags caused by short circuit faults in a large chemical industry. The supply arrangement for the industry is discussed. The connected equipment of the industry is fed from the 6.6 kV bus. The voltage sag analysis is performed for faults at different voltage levels in the power supply network. For every voltage level, the critical distance and...
In the last years, the wind power generation incorporated into the standard grid has been increased significantly. This situation forced the revision of the electric utilities grid codes requirements, to guarantee the reliability in systems with high wind energy penetration. Particularly in transient conditions, the wind farms must withstand several types of disturbances coming from the grid, such...
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