Abstract
The increased use of non-linear equipment results in conducted electromagnetic interference problems. As an example, static energy meters, used to measure the energy consumption in households, show misreadings due to pulsed currents from a speed controlled water pump or dimmed lighting equipment. To determine the existence of similar equipment in low-voltage networks, this letter surveys current waveforms drawn by equipment in the low-voltage network. These waveforms are analyzed and compared to critical waveforms from previous research that caused static energy meter interference. In this way the extent of critical situations in a real-world environment is determined. The equipment survey is performed using a multi-channel timedomain measuring method able to capture the voltage and currents synchronously. Then using a time-domain parametric model a statistical overview of parameters such as the charge, crest factor, peak value, pulse duration, and rising slope is given. The survey shows the existence of a large variety of non-linear signals, and 43% contained critical parameters related to static energy meter interference.
Highlights
I N LOW-VOLTAGE networks there is an increased use of equipment with a non-linear behavior compared to traditional linear equipment, which resulted in several conducted electromagnetic interference (EMI) cases
A statistical overview of the charge, crest factor, and peak value is given in Table III, the parameters inside the critical ranges are highlighted in red
For the non-linear equipment in Class A, in a couple of cases the slope is higher than 0.1 A/μs, which resulted from a phone charger, washing machine and speed controlled water pump
Summary
I N LOW-VOLTAGE networks there is an increased use of equipment with a non-linear behavior compared to traditional linear equipment, which resulted in several conducted electromagnetic interference (EMI) cases. Misreadings of static energy meters, used to measure the energy consumption in household situations for billing purposes, are found due to dimmed lighting equipment of light emitting diode (LED) and compact fluorescent lighting (CFL) technology [1], [2], and a speed controlled water pump [3], [4]. Maximum experimental errors of 2675% are found, resulting from fast changes in pulsed currents that have a small pulse duration [5]. The presence of similar equipment and resulting static energy meter interference is shown in [6]. Other EMI problems arise in power line communication (PLC) [7], where the current pulse duration affects the communication [8].
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: IEEE Letters on Electromagnetic Compatibility Practice and Applications
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
