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This paper presents the dynamic performance test of a complete control and protection system for a Multi-terminal MMC HVDC system using hardware-in-the-loop (HIL) simulation. A novel HIL bench with a cost-effective input and output interface between the control system under test and the real-time simulator is introduced. Two critical test cases, namely the start-up of the MMC connected to islanded...
In order to model real complex systems and provide designers with the possibility to study and improve strategy in PSCAD/EMTDC, the paper presents a new gamma measurement method and models a self-defined control system for constant extinction angle control on the basis of the requirement of the operation in HVDC system and the control principle of constant extinction angle. According to the comparison...
To research the effect of wind on corona current generated from DC transmission lines, a mini corona cage and a wind generated system have been constructed. The corona current generated from a copper line in corona cage have been measured with wind and no wind. The relationship between corona current and voltage with wind and no wind have been observed and compared. There were about 3% ~ 7% increased...
To research the effect of temperature and humidity on corona inception voltage gradient of UHV DC transmission line, a mini corona cage has been constructed and put in a manual environment room, which temperature and humidity can be controlled. At the same time, a corona inception voltage gradient measuring system by using vary methods such as current impulse method, acoustic method have been set...
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