Scaling the virtual air-gap principle to high voltage large power applications

Fixed or variable reactors are required in modern high voltage transmission systems. The virtual air-gap principle offers an alternative avenue for the development of controllable compensation devices to overcome voltage regulation problems in high voltage transmission systems. In this paper the scaling of the virtual air-gap principle to high voltage and large power devices is considered. A novel conceptual design of a Virtual Gap Reactor (VGR) is developed, and its configuration and essential working principle are discussed in order to clarify the design possibilities and manufacturing constraints of such a device.