International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395-0056
Volume: 10 Issue: 07 | July 2023
p-ISSN: 2395-0072
www.irjet.net
Mitigation of Voltage Dip and Swell Faults in Wind Energy Conversion Systems Magda hamdy1, Dina Mourad2, Tamer A.A.Ismail3 1
Faculty of Technology and Education, Helwan University, Egypt, Faculty of Technology and Education, Helwan University, Cairo, EGYPT, 3 faculty of technology at El Sahafa. Ministry of higher education, Cairo, EGYPT, ---------------------------------------------------------------------***--------------------------------------------------------------------will require significant restructuring of regional and global Abstract - Wind Energy Conversion Systems (WECS) are 2
energy systems, as well as strategic initiatives to overcome remaining obstacles. Ultimately, generating affordable and sustainable electricity will be critical to the success of this transformation [3].
gaining popularity due to its low-maintenance functioning. WECS must stay up for at least a brief amount of time to provide dependability and stability even in the case of a network outage, according to network standards. In the literature, many strategies for implementing low-voltage riding (LVRT) have been presented. This paper examines different LVRT implementation strategies for synchronous computer-based, networked WECS across a fully assessed cascade system. converts. The inverter is operated from the machine side by employing a field-oriented control approach to drive the generator at the appropriate speed in order to harvest the greatest power from the wind turbine. To accomplish distinct management of active and reactive power, the mains transformer employs a voltage-oriented control algorithm. The LVRT capabilities of the system .
Key Words: wind turbines1, Voltage swells2, Voltage dips3.
1. INTRODUCTION As the world continues to rapidly develop and demand more energy, the negative environmental impacts of traditional fossil fuels as well as their limited reserves have become increasingly evident. To combat this, renewable energy sources like wind energy have gained significant global attention.Wind energy is pollution-free and widely distributed, making it an important renewable energy source in the transition to a low-carbon future. In 2020, 93 GW of new wind power installations were built, bringing the total installed capacity to 743 GW worldwide. China currently has the largest proportion of global wind energy capacity at 38.5%, followed by the United States at 16.1% [1]. in light of the need to combat climate change and reduce carbon dioxide emissions, renewable energy is becoming increasingly attractive. Wind energy, in particular, has many environmental ,economic, and social advantages. Policymakers, researchers, and stakeholders should take note of its potential contribution to the transition to a lowcarbon future Looking forward [2], wind power is projected to continue growing rapidly, and could even become the primary source of global energy by 2050. Achieving this goal
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Chart -1: Global cumulative wind power capacity from 2011 to 2019 1.1 WPP at Constant Speed The generator in a constant speed WPP is electrically locked to the grid to which its stator is linked. Regardless matter how quickly the wind blows, the generator will always run at the same pace. The constant speed of the rotor is determined by the grid frequency, the number of pole pairs in the generator, and the gear ratio .In this configuration, the rotor does not revolve faster than the synchronous speed. Constant speed wind turbines (CSWT) are normally stall controlled and employ induction generators to generate power. The three-phase rotor windings of the generator are directly linked to the grid, while the stator windings give excitation to the generator. The synchronous speed
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