Power Filters Planning

Abstract

In this chapter, the authors provide a succinct overview of harmonic power filter planning studies, including causes and malicious effects of nonlinear loads and detailed descriptions of passive and active harmonic power filters. Next, different methodologies for solving harmonic power flow problems are precisely classified. Besides these outlines, the chapter develops the formulation of an innovative techno-economic multi-objective framework for the hybrid harmonic power filter (HHPF) planning problem in distribution networks, with consideration of uncertainty in demand and harmonic currents injected by nonlinear loads. The proposed framework is also broken down into a harmonic power flow problem and the HHPF planning problem. The harmonic power flow problem acts as a central core of the HHPF planning problem and is solved via a probabilistic decoupled harmonic power flow (PDHPF) methodology. This chapter widely utilizes an efficient two-point estimate method (two-PEM) in order to handle uncertainty in demand and harmonic currents injected by nonlinear loads in the proposed framework. The proposed PDHPF methodology, according to the efficient two-PEM, is implemented by a deterministic decoupled harmonic power flow (DDHPF) methodology. A loadability-based Newton-Raphson power flow (LBNRPF) methodology is also applied to solve the power flow problem at the principal frequency.