A novel approach based on nonactive powers for the identification of disturbing loads in power systems

In this paper, a new approach is proposed for the detection of harmonic sources in polluted power systems. It is a single-point strategy, based on a comparison among different nonactive power quantities proposed in literature that, in the same working conditions, assume different values at the same metering section. Some simulations tests were carried out on a standard IEEE test system proposed by other authors as a benchmark system for the analysis of multipoint measurement techniques for harmonic pollution monitoring. The obtained results show that the proposed single-point approach is in agreement with other strategies already proposed in the literature and can provide useful indications for the detection of the dominant harmonic source upstream or downstream the metering section also in some critical cases.