Research on Transition Scheme of LCC-HVDC Retrofitting for VSC-HVDC
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Abstract
In order to avoid the commutation failures of receiving end convertor Converter station in LCC-HVDC transmission systems, and to improve the voltage stability of receiving end converter station AC system, the Line Commutated Converter in receiving end converter station retrofit for Voltage Source Converter, that form the Hybrid HVDC transmission systems which sending end is LCC-HVDC and receiving end is VSC-HVDC. In order to reduce the outage time during the retrofitting process, intensive study on transition scheme of sending and receiving ends converter station according to Guizhou-Guangdong I HVDC Project of CSG, Put forward transition scheme of LCC-HVDC retrofit for VSC-HVDC, the research results have great reference value to the Hybrid HVDC transmission systems.
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