چكيده به لاتين
Wind turbines are considered as one of the oldest methods of producing electricity from renewable energy sources. Despite the increase in the number of the wind farms connected to the power network and the many benefits that they have, in abnormal conditions of the network, especially when voltage changes occur in the network, the wind turbines will have undesirable effects on the power grid. In addition, the connection of a large number of wind farms to the output of the distribution networks leads to an increase in the short circuit. Today, operators of wind turbines significantly improve the performance of these devices by creating protective codes to meet the requirements of the wind turbines. One of these requirements is the capacity of low voltage ride-through.
In this study, focuses on improve the transmission capacity of low voltage ride-through of wind turbines. It is possible to improve the capacity of the low voltage ride-through by using a control system to inject reactive current in the network side-converter, when used with a permanent magnet generator. With the combination of a resistance superconducting fault current limiter and a 50 MW wind power plant, this capacity is greatly improved. One of the most important issues in the using of the fault current limiter devices is their design in such a way that, in addition to adapting to network conditions, the other features of it, such as the energy in the superconductor, the quench time, and the recovery time are become optimal. This issue can be considered as a multi-objective optimization problem, which is suggested by the meta-innovative algorithms to solve these problems. In order to provide a comprehensive method, the design of a superconducting fault current limiter for a sample network is examined.
Keywords: Wind turbine based on PMSG, Low voltage ride-through, Resistive superconducting fault current limiter, optimal design of RSFCL.
