On the Defection in Lightning Impulse Voltage Parameter Evaluation Procedure by IEC 60060-1: 2010

抄録

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.