2019 Volume 139 Issue 3 Pages 157-162
The new lightning impulse voltage waveform parameters evaluation procedure has been in effect since the introduction of IEC 60060-1: 2010. The new procedure employs the base curve and the test voltage function to yield the test voltage curve. The procedure has successfully processed IEC 61083-2: 2013 TDG curves and has been regarded flawless. This paper clarified the new procedure is perfect only when a recorded waveform subject to IEC 60060-1: 2010 procedure has an asymptote of the sum of two exponential function. Authors installed a new impulse generator of 600kV in the new high voltage hall and noticed that a modern impulse generator's discharge resistors are not wound inductance free. The generator's circuit produces waveform not approximated by the base curve specified in IEC 60060-1: 2010. This caused heavy error on T1 value, which has to be accepted as authentic. Authors confirmed a flaw in IEC 60060-1: 2010, proposed an amendment to the new standard and confirmed its effectiveness.
The transactions of the Institute of Electrical Engineers of Japan.B
The Journal of the Institute of Electrical Engineers of Japan