Limits...
Real time voltage and current phase shift analyzer for power saving applications.

Krejcar O, Frischer R - Sensors (Basel) (2012)

Bottom Line: Nowadays, high importance is given to low energy devices (such as refrigerators, deep-freezers, washing machines, pumps, etc.) that are able to produce reactive power in power lines which can be optimized (reduced).Such quality measurement is needed to allow adequate action intervention (feedback which reduces or fully compensates reactive power).The price and the size of the final product need to remain low as they are the two important parameters of this solution.

View Article: PubMed Central - PubMed

Affiliation: Department of Information Technologies, Faculty of Informatics and Management, University of Hradec Kralove, Rokitanskeho 62, Hradec Kralove 50003, Czech Republic. Ondrej.Krejcar@remoteworld.net

ABSTRACT
Nowadays, high importance is given to low energy devices (such as refrigerators, deep-freezers, washing machines, pumps, etc.) that are able to produce reactive power in power lines which can be optimized (reduced). Reactive power is the main component which overloads power lines and brings excessive thermal stress to conductors. If the reactive power is optimized, it can significantly lower the electricity consumption (from 10 to 30%-varies between countries). This paper will examine and discuss the development of a measuring device for analyzing reactive power. However, the main problem is the precise real time measurement of the input and output voltage and current. Such quality measurement is needed to allow adequate action intervention (feedback which reduces or fully compensates reactive power). Several other issues, such as the accuracy and measurement speed, must be examined while designing this device. The price and the size of the final product need to remain low as they are the two important parameters of this solution.

No MeSH data available.


Related in: MedlinePlus

Main screen of the analyzing software. All necessary information is displayed. Minor information can be accessed through the additional icons and functions.
© Copyright Policy
Related In: Results  -  Collection

License
getmorefigures.php?uid=PMC3472890&req=5

f8-sensors-12-11391: Main screen of the analyzing software. All necessary information is displayed. Minor information can be accessed through the additional icons and functions.

Mentions: Analyzer devices are often used to analyze street light power lines. These circuits are relatively steady, therefore the voltage and current running are easy to analyze. The main problem in this application area is that too much reactive power is present [13]. It is a major problem which has to be resolved, because of the excess current strain of wires. Too much reactive power leads to overheating of the wires which causes essential loses and decreases the overall efficiency of the lightning process [14]. In Figure 8 a post processing software environment can be seen. Recorded data are processed and displayed. Various calculations are added for simple final evaluation. On the right side average values of main quantities are displayed, including all types of power and overall Power Factor Correction (PFC). In this figure one street lights' period is currently shown. On the top the voltages are applied to all phases where in the middle part the currents are shown. Finally, a power (optionally Reactive, Apparent, Real) are displayed at the bottom.


Real time voltage and current phase shift analyzer for power saving applications.

Krejcar O, Frischer R - Sensors (Basel) (2012)

Main screen of the analyzing software. All necessary information is displayed. Minor information can be accessed through the additional icons and functions.
© Copyright Policy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC3472890&req=5

f8-sensors-12-11391: Main screen of the analyzing software. All necessary information is displayed. Minor information can be accessed through the additional icons and functions.
Mentions: Analyzer devices are often used to analyze street light power lines. These circuits are relatively steady, therefore the voltage and current running are easy to analyze. The main problem in this application area is that too much reactive power is present [13]. It is a major problem which has to be resolved, because of the excess current strain of wires. Too much reactive power leads to overheating of the wires which causes essential loses and decreases the overall efficiency of the lightning process [14]. In Figure 8 a post processing software environment can be seen. Recorded data are processed and displayed. Various calculations are added for simple final evaluation. On the right side average values of main quantities are displayed, including all types of power and overall Power Factor Correction (PFC). In this figure one street lights' period is currently shown. On the top the voltages are applied to all phases where in the middle part the currents are shown. Finally, a power (optionally Reactive, Apparent, Real) are displayed at the bottom.

Bottom Line: Nowadays, high importance is given to low energy devices (such as refrigerators, deep-freezers, washing machines, pumps, etc.) that are able to produce reactive power in power lines which can be optimized (reduced).Such quality measurement is needed to allow adequate action intervention (feedback which reduces or fully compensates reactive power).The price and the size of the final product need to remain low as they are the two important parameters of this solution.

View Article: PubMed Central - PubMed

Affiliation: Department of Information Technologies, Faculty of Informatics and Management, University of Hradec Kralove, Rokitanskeho 62, Hradec Kralove 50003, Czech Republic. Ondrej.Krejcar@remoteworld.net

ABSTRACT
Nowadays, high importance is given to low energy devices (such as refrigerators, deep-freezers, washing machines, pumps, etc.) that are able to produce reactive power in power lines which can be optimized (reduced). Reactive power is the main component which overloads power lines and brings excessive thermal stress to conductors. If the reactive power is optimized, it can significantly lower the electricity consumption (from 10 to 30%-varies between countries). This paper will examine and discuss the development of a measuring device for analyzing reactive power. However, the main problem is the precise real time measurement of the input and output voltage and current. Such quality measurement is needed to allow adequate action intervention (feedback which reduces or fully compensates reactive power). Several other issues, such as the accuracy and measurement speed, must be examined while designing this device. The price and the size of the final product need to remain low as they are the two important parameters of this solution.

No MeSH data available.


Related in: MedlinePlus