Abstract:
The invention relates to a method and apparatus for monitoring the condition of subsystems within a renewable generation plant or microgrid which are using Supervisory Control and Data Acquisition (SCAD A) systems for allowing plant operators to monitor and interact with a plant via human machine interfaces.
Abstract:
Embodiments of the present invention are generally based on employing a power transmission line (160) in a HVDC link to provide auxiliary power to one of the ends of the HVDC link for facilitating a black start thereof when the HVDC link is de-energized, i.e. when at least one of the HVDC converter stations (140, 150) is de-energized and there is no transmission of power between inverter and rectifier HVDC converter stations (140, 150) on each side of the HVDC link. A relatively small amount of power can be conveyed towards one of the HVDC converter stations (140, 150) via the power transmission line (160) so as to provide power to any auxiliary system(s) of the converter station (140, 150), for example prior to a black start of the converter station (140, 150) being carried out.
Abstract:
Embodiments are generally based on employing a power transmission line in a HVDC link to provide auxiliary power to one of the ends of the HVDC link for facilitating a black start thereof when the HVDC link is de-energized, i.e. when at least one of the HVDC converter stations is de-energized and there is no transmission of power between inverter and rectifier HVDC converter stations on each side of the HVDC link. A relatively small amount of power can be conveyed towards one of the HVDC converter stations via the power transmission line so as to provide power to any auxiliary system(s) of the converter station, for example prior to a black start of the converter station being carried out.
Abstract:
Embodiments are generally based on employing a power transmission line in a HVDC link to provide auxiliary power to one of the ends of the HVDC link for facilitating a black start thereof when the HVDC link is de-energized, i.e. when at least one of the HVDC converter stations is de-energized and there is no transmission of power between inverter and rectifier HVDC converter stations on each side of the HVDC link. A relatively small amount of power can be conveyed towards one of the HVDC converter stations via the power transmission line so as to provide power to any auxiliary system(s) of the converter station, for example prior to a black start of the converter station being carried out.
Abstract:
The present disclosure relates to a power converter (200) comprising a first node (210) adapted to receive a direct current power, a second node (220) adapted to output a three-phase alternating current power, and at least three branch units (230). A branch unit is electrically connectable to the first node and the second node and adapted to convert the received DC into a respective phase of the output three-phase AC. Further, the branch unit is arranged in a sealed enclosure (435) which is separately arranged from sealed enclosures of the other branch units, thereby forming separate branch unit modules (430). The separate branch unit modules may facilitate maintenance and transport of the power converter.