WG 8

Description of the electromagnetic environment associated with the disturbances presenton electricity supply networks

a) To analyze the electromagnetic interference phenomena
related to quality of supply, for example:


-harmonics
-inter-harmonics
-voltage fluctuations (flicker)
-voltage dips and short interruptions
-voltage unbalance
-power frequency variations
-ripple control/ mains signalling
-d.c. components


b) To prepare a description of the electromagnetic environment
with respect to above phenomena.


c) To establish typical environmental levels (compatibility
levels) to which emission and immunity levels can be related.


d) To prepare guidelines for the connection of large disturbing
loads to power supply system with regard to low frequency
disturbance phenomena (Engaged Task Force ICU will remain
provisionally allocated to WG 8 to finish this work).


e) To prepare a report related to the environment of LF
magnetic fields.


WG 8 will ensure contact and/or liaise with other WGs' of IEC/TC 77, other TCs' and international bodies e.g. CIGRE, CIRED, UNIPEDE, UIE, IEEE, and CENELEC.