Modeling and Real-Time Simulation of Three-Level Fault-Tolerant STATCOM Under Switch Open-Circuit Faults

This paper proposes a new modeling method of the fault-tolerant three-level neutral-point-clamped static synchronous compensator (STATCOM) under switch open-circuit fault conditions, in order to achieve accuracy and rapid real-time simulation. In this method, fault models can be decomposed into several models, and each model represents a certain operating state in fault conditions. On this basis, a realtime simulation is built on a dSPACE platform, and the simulation step can be reduced to 1µs. Finally, the effectiveness of the proposed method is thoroughly demonstrated under normal and fault conditions.

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