Larry Conrad opened the meeting by reading the PAR for the TF. He discussed the progress of coordinating with the IEC. Following this, introductions were made. There were 15 in attendance.

Minutes from the Winter PES meeting were reviewed and approved with changes/corrections.

Larry spent some time relating the influence that the TF has had regarding the IEC standard. He passed out copies of the IEC flickermeter standard 61000-4-15. In addition, copies of the IEC WG 77A Committee Draft (CD) were handed out. The CD amends the IEC standard to include the 120V lamp data as well as the additional high frequency test points. Larry informed the TF of the legal nature of the IEC standard regarding the sale of end-use equipment. He spent some time explaining the test procedure for individual equipment. A system impedance of 0.4+J0.25 ohms is assumed and the standard applies to all equipment less than 16A. Each piece of equipment must have a Pst of less than 1.0. Equipment passing the test earns the CE stamp and can legally be sold in Europe. There is no such equipment law in the United States. The question was asked: Are we, by accepting the IEC standard, driving the US to a similar law? After some discussion it was agreed that it is not the responsibility of the IEEE PES to go into the house. Their domain of influence ends at the meter (the PCC).

Larry continued discussion of the CD by going over the weighting filters which the CD sets to 6^th order. Some discussion ensued about having an 8^th order filter with one cutoff frequency for both 50Hz. and 60Hz. meters. Presently, the filters are 6^th order with the corner frequency set at 35Hz. for 50Hz. meters and 42Hz. for 60Hz. meters. The CD allows for future digital implementation with up to 10^th order filters. Discussion followed concerning the meter description and meter vendors. It was also discussed as to whether one instrument could work at both 50Hz. and 60Hz. due to the different cutoff frequencies. Larry went over the performance changes and the added new block diagram. No one indicated concern about all the discussed changes.

Mark Halpin went over the chapter list for the tutorial. Some assignments were updated due to TF member job changes. James Wikston will handle Chapter 2, Introduction to Flicker and Modulation. He and Rich Bingham will also provide a case study. This tutorial is scheduled for presentation at the 2000 Summer PES meeting in Seattle.

Larry affirmed that the TF wanted to initiate a PAR for an application guide for assessing flicker. The PAR needs to be ready by October and work on the guide will start at the 2001 Winter PES meeting. (Action Item #28)

Larry asked the secretary to send a memo to all TF members each time the web site is updated. He also requested that the secretary prepare a blaster list for the TF. (Action Item #33)

Larry will work on extending the TF PAR (Action Item #34) Also the Draft of P1453 is to be updated. (Action Item #35)

Some discussion followed concerning how the new flicker criteria might be implemented during the transition period. The GE curve, found in both the Red Book and in IEEE 519 is currently being used by most utilities and there will be some effort needed to implement the IEC standard. A 1979 IEEE paper by Mike Walker contained a survey of the flicker criteria used by US utilities. For the time being, each utility will need to refer to existing IEC documents to determine how to apply the IEC method in their flicker studies. Section 6 of 61000-4-15 pertains to environmental issues and since the IEEE counterpart will be a recommended practice we are not saying that part has to be complied with. To assist in implementing the IEC standard, Larry and James will put together a shape factor reference paper. (Action Item #36)

The meeting adjourned at 9:00AM.