A transmission line DC de-icer using a single-arm modular multilevel converter
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Date
2022-04-18
Authors
Dong, Ziming
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Abstract
This thesis studies the operating principles, parameter design, and harmonics performance
of an HVDC converter topology: SAMMC (single-arm modular multilevel converter), and
develops a DC deicer system using this converter as a rectifier to melt ice on iced conductors.
Ice formation on power lines is a common problem in cold climate jurisdictions. It could
cause severe danger to power systems since the weight of ice could damage the power line or
transmission towers. This thesis develops a portable DC deicer with SAMMC technology to
convert AC power into DC power and use DC current to melt ice on the power line efficiently
and economically. The SAMMC DC deicer system is firstly validated by EMT simulation
models. Then, a scaled-down laboratory prototype is developed to validate the performance
of the SAMMC rectifier and the harmonics suppression controller.
Description
Keywords
power electronics, power system, HVDC converter, EMT simulation, RTDS, Modular Multilevel Converter, Single-Arm Modular Multilevel Converter, transmission line deicing