A study on the probability distribution of the residents load harmonic collective effect based on cloud theory

This paper introduced the cloud theory briefly firstly, then presents a method based on the cloud theory to access the collective harmonic influence of the residential loads, which can identify the harmonic sources so as to determine the harmonic suppression scheme. For the residential harmonic current probability distribution has multiple peak values, the cloud transformation method has more advantages than the normal distribution method. The analysis results of practical cases prove that the cloud transform is capable of fitting the harmonic current distribution curves in high precision, and presenting the multi-modal characteristics of the distribution curves well.