Experimental evaluation of the harmonic behavior of LED light bulb

During the recent few years the residential lighting market has completely altered by the introduction of new energy efficient lighting solid state lamps known as LED lamps. This will affect the power distribution grid harmonic behavior under high penetration of these light sources. This paper evaluates the harmonic behavior of different commercially available residential LED light bulbs under different operating conditions. The paper presents the test setup and recommendations for residential LED lights bulbs specification to minimize their impact on the distribution system harmonic distortion. The results database can be used to assess the effect of high penetration of this type of loads on the power quality of the distribution grid and to develop and test the dynamic and electromagnetic transient models for this type of loads.