Got a weird one here in Lexington. Kentucky Utilities interval data is showing power factor readings over 1.0 for several 15-minute periods. We're talking 1.08, 1.12, even one reading at 1.23. Physics says this is impossible unless they have some serious leading power factor correction going on. Meter malfunction or data transmission error? Anyone seen readings this far outside normal range?
Load profile showing impossible power factor readings
Oz, that definitely sounds like a metering issue. I'm also in Lexington and haven't seen KU interval data with power factors over 1.0. Could be a CT ratio problem or the meter's firmware needs updating. I'd call their metering department and ask for a meter test. Document everything with timestamps because if they're billing demand based on those readings, the customer could be getting overcharged significantly.
Mike's right - definitely a metering problem. Idaho Power had similar issues with some older Landis+Gyr meters where the power factor calculations would glitch during certain load conditions. The impossible readings usually indicate the meter is calculating reactive power incorrectly. This could affect both demand and power factor penalty charges. Get KU out there ASAP for a meter accuracy test.
Guys, this is exactly the kind of data validation we need to be doing on every audit. Power factor readings above 1.0 are immediate red flags for metering problems. Oz, make sure you get those meter test results in writing. If the meter has been inaccurate for months, that could be a substantial billing adjustment. I've seen cases where faulty power factor measurements resulted in $50K+ in overcharges.