Study on Reactive Power and Harmonic Characteristics of DC Ice-melting Technology based on RTDS Simulation and Field Test
Abstract: To study the
characteristics of reactive power and harmonic of 500kV DC de-icer, the
ice-melting technologies including the calculation method of critical
ice-melting current, ice-melting time and maximumice-melting current are
clarified. The detail ice-melting methods and strategies for the 500kV
transmissionlines are proposed. Based on the ice-melting current calculation of
Kang-Ding substation transmission lines in Sichuan, China, the 500kV/150MVA DC
de-icer is deployed for the 500kV transmission lines. The effectiveness and
feasibility of the ice-melting algorithm is validated by the RTDS simulation
and the field test results. It is proved that the harmonic distortions of
voltage and current are increased with the increasing ice melting current,
which can be improved by the installation of passive filters.
Keywords: DC de-icer, Real
time digital simulator (RTDS), ice-melting current, deicing operation mode, harmonic
and reactive power characteristics
Author: Lin Xu, Yang Han
Journal Code: jptkomputergg160255
