IEEE PES Working Group
P1433 Power Quality Definitions

The Power Quality Definitions Working Group met at the IEEE PES Summer Power Meeting in Denver, CO on Tuesday July 30, 1996 from 8:00-9:00 am. Sixteen persons signed the official attendance record as attending the meeting.

The meeting started with general introductions of those present and circulation of the meeting attendance sheet (see attached). The minutes of the previous meeting were reviewed and accepted per a motion by the group.

No reports have been received to this date from the Liaison groups.

The PAR of the P1433 group was reviewed, with the following purposes presented:

1. To develop a standard.
2. To coordinate with other groups.
3. To develop a graphical presentation of Power Quality terms.

Discussion was held regarding two main issues that the chairman proposed:

1. Document Organization: The issue centered around two formats, IEEE Standard 100 definitions only; or IEEE Standard 100 definitions combined with more detailed descriptions about these terms.
2. Definitions to Include: The issue centered around which power quality definitions to include in the 1433 document.

Regarding Document Organization:

Eric Gunther suggested that the phenomena section remain a part of IEEE Std.1159, and that the P1433 group only concentrate on classic (IEEE Std. 100 style) definitions of Power Quality terms. However, Francois Martzloff suggested that we harmonize with IEC 50 definitions. These two ideas raised discussion regarding the overall outcomes from creating a new standard of power quality definitions.

It was pointed out that IEEE Std. 100 and IEC 50 were both primarily text based documents. However, to convey proper power quality information, it was agreed upon that graphical information must be included. However, with a desire to harmonize with the existing IEEE Std. 100 format, it was determined to have two primary sections in the document: Section 1 - Classic Definitions; Section 2 - Application (Graphical) Definitions. In this manner, P1433 will be a standalone document. In this manner, the Classic Definitions will be absorbed into IEEE Std. 100 during the next revision cycle, yet Application (Graphical) Definitions will provide greater insight into the true meaning of the Power Quality terms.

A motion was made to form the new IEEE Std. 1433 into two primary sections: Section 1 Classic Definitions (IEEE Std. 100 format); and Section 2 - Application (Graphical) Definitions (Repeating classic definition in this section, followed by more in-depth explanations and graphics as necessary). The motion was seconded with discussion and vote. The motion was approved.

Definitions to Include:

The chairman handed out a proposed P1433 Draft 1 for discussion purposes only to the group. This draft was created to provide some framework to the overall discussion of the group. The draft was created using terms primarily from IEEE Std. 1159 and included a few miscellaneous terms from other standards (C62). A copy of this document is attached to the minutes.

Discussion centered around what will be appropriate to include in a power quality definitions standard. For example, the terms accuracy and accuracy ratio were discussed. They were deleted from inclusion in the draft, however, they are a part of IEEE Std. 1159. It was felt by the chairman that these definitions related to monitoring equipment, and not specifically power quality. Following this discussion, wiring and grounding terms (found predominantly in the Emerald Book, IEEE Std 1100) were considered. Finally, it was discovered that certain terms have a domain of application that causes the definition to vary depending upon the applicable domain.

The consensus of the group was the following:

1. Create first IEEE Std. 1433 from the definitions in IEEE Std. 1159. These have been approved at one time. Before expanding any definitions from IEEE Std. 1159, investigate other uses through liaisons to other groups.
2. Take terms from all standards that are related to power quality. If a conflict arises, indicate a domain of application for the term to indicate its use for power quality purposes only.
3. Bring newly added terms (those beyond IEEE Std. 1159) to 1433 committee to decide upon inclusion into new document.

Closing Discussions:

Francois Martzloff suggested that P1433 take over the responsibility of maintaining the Phenomena section of IEEE Std. 1159. He proposed a "friendly takeover" approach by taking the concern to the SCC 22 Committee. The Phenomena section of IEEE Std. 1159 would then appear in the Section 2 identified previously. In this way, information will not be duplicated in two standards, and synchronizing the standards will be easier.

The meeting was closed at 9:00 a.m., with the next meeting scheduled for the 1997 Winter Power Meeting in New York, NY.

slr 02/99