A 400-V/50-Kva Digital-Physical Hybrid Real-Time Simulation Platform For Power Systems
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS(2018)
摘要
Power system simulation is an important means to study the dynamic behavior, to ensure the safety and stability, and to optimize the operation of a power grid. Pure physical simulation and digital simulation have their own advantages and disadvantages. A three-phase four-wire hybrid simulation platform integrating the advantages of both the digital simulation and physical simulation is developed by combining the physical simulation system and real-time digital simulator. The platform is rated at 400 V and 50 kVA with the short-circuit capacity of 500 kVA and can supply ten times the rated current to support the simulation of various short-circuit faults. An improved interface algorithm based on an ideal transformer model is proposed to extend the stability region of a hybrid simulation. Hybrid simulation experiments are conducted under two cases, and the comparison with the digital simulation demonstrates the performance of this platform and the potential applied to a modern power system. This platform has been equipped in a key laboratory of smart power grid technology.
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关键词
Digital-physical hybrid real-time simulation, high-power interface, ideal transformer model (ITM) interface algorithm, power hardware-in-the-loop (PHIL), power system
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