A novel methodology for modeling waveforms for power quality disturbance analysis

Abstract Nowadays, power quality (PQ) analysis is having more relevance in the operation of power systems due to the increase of power quality events and disturbances. Those disturbances are related to the interconnection of renewable energy generators, and to the highly non-linear characteristics of the load, among others. There is a need of having knowledge about the nature of the PQ disturbances and about the mathematical approaches that describe the PQ disturbance. This paper presents the development of a structured methodology in combination with a mathematical model, intended for describing waveforms that contain simultaneous PQ disturbances. The validation process is made by fitting the proposed model to standard reference waveforms along with field recorded waveforms. The proposed mathematical model is capable of being adjusted in order to reproduce waveforms that contain simultaneous PQ disturbances. Five study cases are presented in order to test the proposed methodology.

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