Application aspects and measurement methods in the frequency range from 2 kHz to 150 kHz

Abstract

Emissions in the frequency range from 2 kHz to 150 kHz are source of electromagnetic interferences to other electrical equipment in the power grid and therefor the need of measurement of disturbances is increasing. Several standardization committees are discussing emission limits in this frequency range and will publish them soon. Two different approaches are used for this frequency range:· Power quality measurement in power systems,· Electromagnetic compatibility: proof of equipment regarding emission limits.The installation of emission sources in the frequency range from 2 kHz to 150 kHz in the power grid is rapidly increasing. Main drivers are decentralized power generation and demand for energy efficiency.The compatibility and emission limits are commonly published as quasi-peak detector values for a bandwidth of 200 Hz measured by CISPR 16 receivers.In 2015 a measurement method was published as informative Annex of IEC 61000-4-30 Ed. 3. Comparative measurements between different standards have shown substantial deviation for some test signals.The paper will present an overview of different measurement methods and compares them regarding performance requirements for implementation in Power Quality instruments, and compatibility and accuracy with CISPR 16 receivers.