I'm looking for some information on why power quality data (harmonics, etc...) would need to be obtained directly from HV/EHV/UHV lines.
I understand the need for PQ data, but I'm trying to understand why it would need to be measured on the high side of substations, etc...
I would be...
Does anyone have any information on Doble testing of dry-type insulation systems, particularly cast epoxy. I am most concerned with the test's validity and if deemed valid, the acceptable range of readings.
I am interested to know the location of substation ground grids in relation to control wiring. I.e. is control wiring (such as wiring from apparatus to the control house) generally run above or below the station ground grid.
Thanks for any input you may have.
Does anyone have any information on DC on AC HV transmission lines. I.e. DC current that is either induced or injected on transmission lines under steady state conditions.
I know that EHV lines can have some DC currents induced by the DC magnetic field between line and ground. What magnitudes...
