Interaction of power quality disturbances within 2–150 kHz (supraharmonics): Analytical framework

Abstract

Disturbances interaction at supraharmonic range (2-150 kHz) between two lighting devices and a power source is described in this article by means of an Electrical Power method. Currents and voltages were measured from a LED lamp, a CFL device and an AC Power Source under normal operation in order to describe how conducted disturbances interact within the 2-150 kHz frequency range. From an Electrical Power point of view, the devices used are described as Power-sharing agents and therefore the disturbances observed from their operation can be exchanged not only with their electric neighbourhood, but also throughout the Frequency Domain. This method can be used for the Interaction Description in Frequency Domain of steadystate disturbances between devices without directly considering the impedance behaviour of such devices.

Interaction of some low power LED lamps within 2–150 kHz (supraharmonics)

“…This voltage source provides a low distorted signal generated by a PWM system operating at 80 kHz, simulations carried out in this paper model this frequency component as a series ideal voltage source. Further information about the measurement system can be found in [8], [9].…”

“…Fast Fourier Transform algorithm) and Time-Frequency domain, as well as to explain the interaction of disturbances using Northon equivalent circuits [17], [19]. However, the interaction of steady-state emissions within 2-150 kHz between devices in real electrical installations is still under research, as well as the emitting or receiving behaviour of appliances [9], [17], [20]. D. Agudelo-Martínez (dagudelom@unal.edu.co), F. Ríos (@unal.edu.co) and A. Pavas (fapavasm@unal.edu.co) are with the PAAS-UN Research Group, Universidad Nacional de Colombia.…”

“…Measurements and simulations of emissions within 2-150 kHz contribute to understand these phenomena and allow researchers to state their eventual impact on either current and future distribution grids [13]- [19]. On the one hand, the identification of emissions from devices under real conditions are performed using measurement systems and signal processing methods [1]- [9]. On the other hand, simulations using appropriated models allow researchers to specifically vary some circuit parameters, evaluate foreseeable scenarios, or even estimate how could phenomena behave in a qualitative, indicative way [10], [14], [19].…”