Abstract
In this paper, the design and implementation of a novel recursive method for the power measurement ac-cording to the IEEE Standard 1459-2010 have been described. The most important parts are adaptive band and low-pass FIR filters that extract fundamental and dc components, respectively. In addition, by using oversampling techniques and decimation filters, coefficient sensitivity problems of the large-order FIR comb cascade structure are overridden and the parameter estimation accuracy is improved. The symmetrical components are estimated through a transformation matrix of adaptive phase shifters. The effectiveness of the proposed techniques is demonstrated by simulation results.
Highlights
The concept of power components for sinusoidal single-phase voltages and currents and for balanced three-phase sinusoidal voltages and currents is well defined
The good properties have been achieved by cascade connection of the antialiasing cascaded integrator-comb (CIC) filters with the cutoff frequency that is high enough to ensure fast response, and the reduced-order FIR comb filter that is applied on the decimated signal
The structure consists of decoupled modules: the decimation filters, the adaptive band- and low-pass FIR comb filters, the fundamental frequency estimation module, the adaptive phase shifters and the modules that estimate the fundamental components of the voltage, current and active and reactive power
Summary
The concept of power components for sinusoidal single-phase voltages and currents and for balanced three-phase sinusoidal voltages and currents is well defined. In (Poljak et al, 2012), an alternative filter-based measurement approach with the simple algorithm for simultaneous estimation of the frequency, the magnitudes of voltage and current, both the fundamental and the total (combined) active power, and fundamental reactive power is prescribed. The good properties have been achieved by cascade connection of the antialiasing cascaded integrator-comb (CIC) filters with the cutoff frequency that is high enough to ensure fast response (up to 8-16 harmonics), and the reduced-order FIR comb filter that is applied on the decimated signal This way, both coefficients sensitivity problems have been avoided and the parameter estimation accuracy has been improved. The power quantities are defined, starting from the effective apparent power resolution that is obtained by separating voltage and current fundamental positive sequence components from all other ones that are detrimental (IEEE Std 1459-2010, 2010).
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
