KANG Jun, LI Qiuyang, QU Quanlei, et al. Analysis on Voltage Unbalance to Ground at Low-voltage Side of 750 kV Main Transformer in Qaidam Convertor Station[J]. High voltageapparatus, 2015, 51(7): 116-120.
KANG Jun, LI Qiuyang, QU Quanlei, et al. Analysis on Voltage Unbalance to Ground at Low-voltage Side of 750 kV Main Transformer in Qaidam Convertor Station[J]. High voltageapparatus, 2015, 51(7): 116-120. DOI: 10.13296/j.1001-1609.hva.2015.07.023.
To investigate the voltage unbalance to ground at low-voltage side of the 750 kV main transformer in Qaidam Convertor Station
the software PSCAD is adopted to conduct simulating calculation in actual working condition. As a result
the relation between the voltage unbalance and the winding capacitance is obtained
and the voltage unbalance is found to be caused mainly by the unbalance of equivalent capacitance of the main transformer’s three-phase entrance to ground. Accordingly