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Justified Fault-Ride-Through Requirements for Wind Turbines in Power Systems

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6 Author(s)
Rahmann, C. ; Inst. of Power Syst. & Power Econ. (IAEW), RWTH Aachen Univ., Aachen, Germany ; Haubrich, H.-J. ; Moser, A. ; Palma-Behnke, R.
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In this paper, a novel adaptive strategy to obtain technically justified fault-ride-through requirements for wind turbines (WTs) is proposed. The main objective is to promote an effective integration of wind turbines into power systems with still low penetration levels of wind power based on technical and economical considerations. The level of requirement imposed by the strategy is increased stepwise over time, depending on system characteristics and on wind power penetration level. The idea behind is to introduce stringent requirements only when they are technically needed for a reliable and secure power system operation. Voltage stability support and fault-ride-through requirements are considered in the strategy. Simulations are based on the Chilean transmission network, a midsize isolated power system with still low penetration levels of wind power. Simulations include fixed speed induction generators and doubly fed induction generators. The effects on power system stability of the wind power injections, integrated into the network by adopting the adaptive strategy, are compared with the effects that have the same installed capacity of wind power but only considering WTs able to fulfill stringent requirements (fault-ride-through capability and support voltage stability). Based on simulations and international experience, technically justified requirements for the Chilean case are proposed.

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Power Systems, IEEE Transactions on  (Volume:26 ,  Issue: 3 )