The existence of harmonics in power systems and their effects have led to numerous issues of electric power quality. The IEEE Standard 519 is being revised and upgraded from a guide to a recommended practice in order to set limits on harmonic distortion and to ensure a high power quality. Thus, the measurement of harmonics in power system has assumed considerable significance because the need of monitoring the power system harmonic content.In this paper dynamic state estimation of power system harmonics is used to estimate the system bus voltage magnitudes and phase angles at different harmonic levels. These estimated variables are used to calculate harmonic factors and indices that are used to obtain the harmonic profile of the system. The term “power system harmonic monitoring” is proposed to collectively refer to the calculation of total harmonic distortion, distortion index, telephone influence factor, C-message index, and the KVT and KIT factors. The IEEE 30 bus system, with three six-pulse rectifier loads, is used as an illustrative example.
ASJC Scopus subject areas
- Electrical and Electronic Engineering