Induced voltages on HVDC systems by HVAC systems at the same support structure due to capacitive and inductive coupling

On the electromagnetic coupling of AC and DC circuits on hybrid transmission towers

“…The authors propose mitigation by means of blocking filters or suitable converter control. Possible hybrid tower configurations for the aforementioned project are shown in [9] and based on [10], [11]. In [9] a mathematical calculation of the induced fundamental AC component in open circuited DC lines of Ultranet is presented.…”