Abstract
We have developed a method for measuring power quality quantities such as voltage distortion, voltage unbalance and frequency from undersampled measurements. It is based on an adaptive state observer for the voltage phasors. The method, its implementation to an existing kWh-meter and experience is documented in previous papers. In this paper we show how to include also the measurements of individual harmonic voltage components, very short voltage dips and interruptions and the flicker indices. First we describe the adaptive state observer and its extension to measure individual harmonic components. Then we discuss the measurement of voltage flicker and short voltage dips as well as the requirements these set on the sampling rate and how to minimise the errors caused by sparse sampling. Also experience with these new meters is summarised.
| Original language | English |
|---|---|
| Title of host publication | 6th International Conference Electrical Power Quality and Utilisation (EPQU'01) |
| Subtitle of host publication | Proceedings |
| Editors | Ryszard Pawełek, Ryszard Klempka |
| Place of Publication | Łódź |
| Pages | 217-224 |
| Publication status | Published - 2001 |
| MoE publication type | A4 Article in a conference publication |
| Event | 6th International Conference Electrical Power Quality and Utilisation-EPQU'01 - Cracow, Poland Duration: 19 Sept 2001 → 21 Sept 2001 |
Conference
| Conference | 6th International Conference Electrical Power Quality and Utilisation-EPQU'01 |
|---|---|
| Country/Territory | Poland |
| City | Cracow |
| Period | 19/09/01 → 21/09/01 |