Optical power line voltage and current measurement systems: Volume 1, Limits to the precision of electro-optic and magneto-optic sensors: Final report

Technical Report · Tue Sep 01 04:00:00 EDT 1987

OSTI ID:6238816

Day, G W; Hale, P D; Deeter, M; Milner, T E; Conrad, D; Etzel, S M

This study began with a central question, ''What precision can be achieved with an electro-optic voltage sensor or a magneto-optic current sensor.'' The answer has been pursued in numerous ways - through an investigation of the basic properties of materials and components (both as reported in the literature and new data generated in our laboratory), through attempts to demonstrate the feasibility of overcoming certain limitations in the properties of components, through analysis of some fundamental limitations, through the proposal of new or refined designs, and through discussions with numerous other investigators. It was concluded that ease of obtaining high precision (in a power systems context) is not included among the advantages of using optical sensors for measurement of electromagnetic quantities. The principal difficulty was that sensors have to maintain their calibration over broad temperature ranges (at least 100/sup 0/C) without the possibility of temperature stabilization. Specifically, using relatively standard approaches and an appropriate definition of precision, a precision not better than about +-1% can be expected. Achieving this level of precision will require wise choices of materials, components, and design; numerous suggestions are offered.

• Research Organization: National Bureau of Standards, Washington, DC (USA); Electric Power Research Inst., Palo Alto, CA (USA)
• OSTI ID: 6238816
• Report Number(s): EPRI-EL-5431-Vol.1; ON: DE87014558
• Country of Publication: United States
• Language: English

Related Subjects

200300* -- Electric Power Engineering-- Power Transmission & Distribution-- (-1989)
24 POWER TRANSMISSION AND DISTRIBUTION
ACCURACY
AMMETERS
CALIBRATION
DESIGN
ELECTRIC MEASURING INSTRUMENTS
ELECTRICAL EQUIPMENT
ELECTRO-OPTICAL EFFECTS
EQUIPMENT
FIBERS
FUNCTIONS
MAGNETO-OPTICAL EFFECTS
MEASURING INSTRUMENTS
MONITORS
OPTICAL FIBERS
POLARIZATION
POWER TRANSMISSION LINES
TEMPERATURE DEPENDENCE
TRANSFER FUNCTIONS
VOLTMETERS