Background: In this paper, a novel technique for reactive power management of the Ultra
High Voltage (UHV) lines having voltage level of 1200 kV line and above is suggested. The UHV
power grid has to frequently face the problems associated with the power- frequency and switching
Methods: The technique involves the use of three-phase UHV Transformers as a controlled shunt
reactor (CSR) in combination with the use of a fixed reactor. The performance of the UHV AC
transmission line is studied using PSCAD software and working of CSR is evaluated.
Results: Standard parameters of the proposed Wardha-Aurangabad 1200 kV transmission line in India
are considered for simulation model. The use of CSR has been found to be effective in mitigating
Conclusion: The system can be used for maintaining voltage profile, resulting in enhancement of
the reliability of the UHV transmission system.
Keywords: EMTDC, Flexible AC transmission systems, Power system, Power systems simulation, Power transmission, PSCAD, Reactive power control, Thyristor
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