Validation of the Measurement Characteristics in an Instrument for Power Quality Estimation—A Case Study

Romuald Masnicki
2017 Energies  
An acceptable quality of electrical energy is seen today as an important component of ecology. Several instruments for estimating the quality of electrical power have been elaborated. Each supplier assures that the instrument meets the applicable standards and that the uncertainty of the measurement results obtained using the instrument does not exceed the established levels. The accuracy of the measurement results depends on a couple of things, e.g., the correctness of the measurement
more » ... easurement algorithms implemented in the instrument and the quality of its calibration. In this paper, the basic features of an "estimator/analyzer" (E/A) instrument, as well as the calibration methods of the instrument, the verification of its measurement algorithms, and also the obtained exemplary results, are shown. The proposal of the strategy of the reliable validation of embedded measurement algorithms for the identification of parameters characterizing electrical power quality in the power grid is discussed. The electrical power quality is a set of parameters describing the properties of the process of provision energy to the user under operating conditions, determining the continuity of the supply (power outage), and characterizing the supply voltage (its value and frequency, shape of waveform, and asymmetry in the multi-phase systems) [5] . The voltage waveforms in the electrical network, often thought of as composed of pure sinusoidal signals, can contain a wide variety of disturbances [6] . The main phenomena related to power quality include:
doi:10.3390/en10040536 fatcat:2jny4h3hrvci7pohltnavdfbfa