1. Hardware-in-the-loop simulation and test of a control and protection system for MMC-based UPFC
- Author
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Wei Li, Yunlong Dong, Jie Tian, Pan Lei, Weihua Wang, and Qiu Defeng
- Subjects
Engineering ,business.industry ,020209 energy ,Hardware-in-the-loop simulation ,Control engineering ,02 engineering and technology ,Modular design ,Protection system ,law.invention ,Flexible AC transmission system ,law ,Control theory ,Unified power flow controller ,0202 electrical engineering, electronic engineering, information engineering ,High-voltage direct current ,Electric power ,business ,Transformer - Abstract
The unified power flow controller (UPFC) is one of the most advanced devices in the flexible AC transmission system (FACTS) family. The modular multilevel converter (MMC) has recently become popular in high voltage direct current (HVDC) transmission and FACTS systems. The application of the MMC in a UPFC is an innovative idea, but its controller features a complex and hierarchical structure that requires testing and coordinating on a Hardware-in-the-loop (HIL) simulation platform. This paper illustrates the architecture of the control and protection(C&P) system for the UPFC, and then presents the implementation of the HIL test of a complete C&P system for the MMC-based UPFC, using a commercial-off-the-shelf real-time simulator. Two different decoupling tools, namely the State-space Nodal (SSN) interface and decoupling transformer model, are used to decouple the model of the UPFC substation and its adjacent electric power grids into several partitions for parallel computation. Simulation results from the HIL test under various normal operation modes, as well as contingencies, are presented for in this paper.
- Published
- 2016