Effects of the Selected Point of Voltage Reference on the Apparent Power Measurement in Three-Phase Star Systems
| Autor: | Carlos Álvarez-Bel, Vicente León-Martínez, Joaquín Montañana-Romeu, Elisa Peñalvo-López |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Instrumentation
Star (graph theory) lcsh:Technology lcsh:Chemistry Electric power system General Materials Science Point (geometry) Neutral-point displacement voltage Power measurement lcsh:QH301-705.5 Power system Fluid Flow and Transfer Processes Physics lcsh:T business.industry Process Chemistry and Technology General Engineering Electrical engineering AC power lcsh:QC1-999 Computer Science Applications Apparent power lcsh:Biology (General) lcsh:QD1-999 Three-phase Neutral-displacement power lcsh:TA1-2040 INGENIERIA ELECTRICA lcsh:Engineering (General). Civil engineering (General) business lcsh:Physics Voltage reference |
| Zdroj: | Applied Sciences, Vol 10, Iss 3, p 1036 (2020) RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia instname Applied Sciences Volume 10 Issue 3 |
| Popis: | [EN] The phenomenon responsible for the different apparent powers measured in a subsystem of a three-phase star-configured system, based on the voltage reference point, was identified in this paper using specific components of the instantaneous powers, as a result of applying the conservation of energy principle to the entire system. The effects of the phenomenon were determined using a proposed apparent power component referred to as the neutral-displacement power, whose square is the quadratic difference between the apparent powers of a subsystem, measured using two voltage reference points. The neutral-displacement power is a component of the apparent power, which is determined using the values of the zero-sequence voltages and the line currents in that subsystem. Expressions of the proposed power were derived using the Buchholz apparent power formulations. The validation of the derived expressions was checked in the laboratory and in a real-world electrical network, using a well-known commercial analyzer and a prototype developed by the authors. This research was funded by Universidad Politecnica de Valencia, under grant Primeros Proyectos de Investigacion (PAID-06-18), Vicerrectorado de Investigacion, Innovacion y Valencia. |
| Databáze: | OpenAIRE |
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