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Contribution of VSC-HVDC to Frequency Regulation of Power Systems With Offshore Wind Generation

Project Abstract / Summary : Modern large wind farms are required to provide
frequency regulation service like conventional synchronous generation units. The frequency support capability of modern wind farms has been widely investigated and implemented. Remotely located large offshore wind farms are probably connected to the onshore system grid through voltage-source converter-based–high voltage direct current (VSC-HVdc) transmission systems. Due to the decoupling of VSC-HVdc and signal transmission delay, offshore wind farms may not be able to respond to the onshore grid frequency excursion in time and, consequently, the stability and security of the power system will be put at risk, especially for those with high wind penetration. This project proposes a coordinated control scheme to allow VSC-HVdc link to contribute to the system frequency regulation by adjusting its dc-link voltage. Bymeans of this approach, the dc capacitors of VSC-HVdc are controlled to absorb or release energy so as to provide frequency support. To further enhance the system frequency response, the frequency support from VSC-HVdc is also finely coordinated with that from offshore wind farm according to the latency of offshore wind farm responding
to onshore grid frequency excursion.

Why did you choose to work on this project topic : In order to improve the power system security when renewable wind energy is to be generated which is a major concern to the society now.
The ministry of new and renewable energy has set a target to generate the wind energy of 60000 MW by the year 2022. so, in this scenario we not only need to generate the energy but also see to it that the wind farm is connected to the grid with no danger of putting the power system at risk due to frequency variations. These frequency variations are due to change in the load which is not in our hands. This project tells us how to control the frequency variations due to load and also to generate the energy from wind farms.

Project Highlights : The ministry of new and renewable energy has set a target to generate the wind energy of 60000 MW by the year 2022. so, in this scenario we not only need to generate the energy but also see to it that the wind farm is connected to the grid with no danger of putting the power system at risk due to frequency variations. These frequency variations are due to change in the load which is not in our hands. This project tells us how to control the frequency variations due to load and also to generate the energy from wind farms.


Project Category : Electrical / Electronics / Communication
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Institute/College Name: MGIT
City: HYDERABAD
State: GANDIPET
Participating Team From: Final Year

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