Title :
A series summation method for the determination of voltage ratios at power frequency with high accuracy
Author_Institution :
Wuhan High Voltage Res. Inst., Hubei, China
Abstract :
The principle of a new series summation method is presented. The ratio standard is a 1-kV inductive voltage divider. The divider can be self-calibrated with an uncertainty of 0.3 p.p.m. using the reference voltage method. The voltage ratio error variation provided a voltage dependence error curve. The uncertainty of the 1-12-kV curve and the 10-80-kV curve is 5 p.p.m.. In two steps, 110 kV/ square root 3 can be obtained, and, compared with the parallel-series setup method of 12 p.p.m., the new method yields 10 p.p.m.<>
Keywords :
measurement standards; voltage dividers; voltage measurement; 1 to 12 kV; 10 to 80 kV; inductive voltage divider; power frequency; ratio standard; reference voltage method; self-calibration; series summation; voltage dependence error curve; voltage ratios; Calibration; Capacitance-voltage characteristics; Circuit testing; Frequency conversion; Instrument transformers; Instrumentation and measurement; Power transformer insulation; Power transformers; Uncertainty; Voltage measurement;
Conference_Titel :
Precision Electromagnetic Measurements, 1990. CPEM '90 Digest., Conference on
Conference_Location :
Ottawa, Ontario, Canada
DOI :
10.1109/CPEM.1990.110068
