IEEE Standard 1159-1995:The Revised PQ MonitoringStandard Randy Collins Chair, 1159 Working Group IEEE Power Engineering Society Winter Meeting New York January 28, 2002
Benchmark Document • Monitoring of Electric Power Quality of single and polyphase systems. • Descriptions of phenomena. • Definitions of nominal and deviations from nominal. • Recommendations for measurement techniques, application techniques, and interpretation of monitoring results.
Purpose • The purpose of 1159-1995 is to direct user in the proper monitoring and data interpretation of electromagnetic phenomena that cause power quality problems.
Purpose cont’d • Defines power quality phenomena to facilitate communication within the power quality community. • Forms the consensus opinion for safe and acceptable methods for monitoring and interpreting results. • Tutorial on power system disturbances and common causes.
The next 1159… • At a minimum, 1159 needs to be updated and include links to the forthcoming 1159.1 and .3 works. • What do we want the final product to look like?
Some ideas… Ch. 1. Overview • Expand and include information about “why would you want to measure for power quality?” Ch. 2. References • Revise and update
Ch. 3 Definitions • Terms used in this recommended practice • Avoided terms • Abbreviations and acronyms • Expand with the former P1433 information • Pull definitions from .1 and .3 documents • Can we use and define terms not used in the document? • Would this be difficult to ballot?
Ch. 4 Power Quality Phenomena • Electromagnetic compatibility • General classification of phenomena • Detailed descriptions of phenomena • Table 2 is probably the most widely used part of the Standard. • Update the graphs. • Expand the explanations.
Ch. 5 Monitoring Objectives • Need for monitoring PQ • Equipment tolerances and effects of disturbances on equipment • Equipment types • Effect on equipment by phenomena type
Ch. 6 Measurement instruments • AC voltage and current measurements • Voltage and current considerations • Monitoring instruments • Instrument power • Revise and update. • Incorporate some 1159. 1 information.
Ch. 7 Application techniques • Safety • Monitoring location • Equipment connection • Monitoring thresholds • Monitoring period
Ch. 8 Interpreting monitoring results • Interpreting data summaries • Critical data extraction • Interpreting critical events • Verifying data interpretation • Expand this to include data reduction and presentation info. • How do you present multi-dimensional info on a 2-dimensional CBEMA/ITIC/SEMI curve?
Additional topics • Sort of a “case study” section, except organize it by equipment categories. • What to monitor and look for, what you don’t need to monitor for when investigating problems with common equipment: • ASDs, PLCs, Switching power supplies, relays/contactors, lighting, etc.
Annexes • Annex A: Calibration and self testing (informative) • Keep this or not? • Annex B: Bibliography (informative) • Keep this and update/expand. • New Annexes: • Technical summaries of the .1 and .3 documents.
Today’s objectives • Establish scope, purpose and other items required for the PAR. • Determine a working outline and chapters • Assign chapter chairs
Ch. 1 and 2 Intro material Ch. 3 Def’ns Ch. 4 Phenomena Ch. 5 Objectives Ch. 6 Instruments Ch. 7 Applications Ch. 8 Interpretation and Statistical Analysis Ch. 9 Examples of using the standard in the field Annexes: A: Calib. and Self-Testing B: Tech Summaries of 1159.1 and 1159.3 C: Bibliography Proposed Organization