Conceptual changes to the IEC TR series 61000-3-6, -7, -13, and -14 for power quality disturbance limit allocation procedures

The purpose of this paper is to provide a preview of the conceptual changes being considered by the CIGRE/CIRED Joint Working Group C4.40 for the IEC Technical Report series 61000-3-X which focuses on limit allocation procedures for power quality disturbances. At the time of this writing, there are four significant conceptual changes under consideration related to (1) differences in MV and HV/EHV allocation procedures, (2) the inclusion of energy producing installations, (3) allocation of remaining disturbance levels, and (4) allocation based on maximum network absorption capability. Each of these changes has been vetted by the members of the Joint Working Group and this paper is intended to provide the information to the broader international community.