An Accurate Nonintrusive Type AC Voltage Measurement System
DOI:
https://doi.org/10.13052/dgaej2156-3306.37415Keywords:
Capacitive sensor, non-intrusive voltage measurement, capacitance-to digital convertor, power system.Abstract
In this work, a completely non-intrusive type alternating current (a.c) voltage
measurement system based on the novel capacitively coupled technique is
proposed. In literature, most of the reported capacitive coupling technique
require a direct contact of sensor to the ground potential of power system.
Human operator, whose body is in contact with the ground must touch the
capacitive sensor to provide the power system ground. The reliability of
those types of approach is limited, as the human operator must be in direct
contact to a conductive part of the sensor. Also, there is the effect of nature of
impedance exist between the body of the human operator and the ground,
which is not taken care by most of the existing methods. In this work, a new method regardless of the variations in the impedance exist between the
measurement unit and the ground potential through the earth, is proposed.
Simulation analysis has been conducted in detail to validate the proposed
approach. A prototype measurement system has been developed and then
tested for a line voltage (200 to 250 V), at 60 Hz. The capacitance output
w.r.t applied voltage was linear and the worst-case non-linearity error was
recorded as
Downloads
References
W. Z. Fam, “A novel transducer to replace current and voltage transformers
in high-voltage measurements,” IEEE Trans. Instrum. Meas., vol. 45,
no. 1, pp. 190–194, Feb. 1996.
X. Sun, Q. Huang, Y. Hou, L. Jiang, and P. W. T. Pong, “Noncontact
operation-state monitoring technology based on magnetic-field sensing
for overhead high-voltage transmission lines,” IEEE Trans. Power Del.,
vol. 28, no. 4, pp. 2145–2153, Oct. 2013.
An Accurate Nonintrusive Type AC Voltage Measurement System 1271
D. Xiao, Y. Xie, Q. Ma, Q. Zheng, and Z. Zhang, “Non-contact voltage
measurement of three-phase overhead transmission line based on electric
field inverse calculation,” IET Gener. Transmiss. Distrib., vol. 12,
no. 12, pp. 2952–2957, Jul. 2018.
D. Porcarelli, D. Brunelli, and L. Benini, “Clamp-and-forget: A selfsustainable
non-invasive wireless sensor node for smart metering applications,”
Microelectron. J., vol. 45, no. 12, pp. 1671–1678, Dec. 2014.
G. D’Antona, P. Pennacchi, C. Pensieri, and C. Rolla, “Turboalternator
shaft voltage measurements,” in Proc. IEEE Int. Workshop Appl. Meas.
Power Syst. (AMPS), Aachen, Germany, Sep. 2012, pp. 1–4.
K.-L. Chen, H.-H. Chang, and N. Chen, “A new transient feature
extraction method of power signatures for nonintrusive load monitoring
systems,” in Proc. IEEE Int. Workshop Appl. Meas. Power Syst.
(AMPS), Aachen, Germany, Sep. 2013, pp. 79–84.
M. Šíra and V. N. Zachovalová, “System for calibration of nonintrusive
load meters with load identification ability,” IEEE Trans. Instrum.
Meas., vol. 64, no. 6, pp. 1350–1354, Jun. 2015.
T. D. Huang, W.-S. Wang, and K.-L. Lian, “A new power signature
for nonintrusive appliance load monitoring,” IEEE Trans. Smart Grid,
vol. 6, no. 4, pp. 1994–1995, Jul. 2015.
L. Yu, H. Li, X. Feng, and J. Duan, “Nonintrusive appliance load
monitoring for smart homes: Recent advances and future issues,” IEEE
Instrum. Meas. Mag., vol. 19, no. 3, pp. 56–62, Jun. 2016.
E. Mohns, G. Roeissle, S. Fricke, and F. Pauling, “An AC current
transformer standard measuring system for power frequencies,” IEEE
Trans. Instrum. Meas., vol. 66, no. 6, pp. 1433–1440, Jun. 2017.
C. Xu, J.-G. Liu, Q. Zhang, C. Xu, and Y. Yang, “Investigation of the
thermal drift of open-loop Hall Effect current sensor and its improvement,”
in Proc. IEEE Int. Workshop Appl. Meas. Power Syst. (AMPS),
Aachen, Germany, Sep. 2015, pp. 19–24.
K. Zhu,W. K. Lee, and P.W. T. Pong, “Non-contact capacitive-coupling
based and magnetic-field-sensing-assisted technique for monitoring
voltage of overhead power transmission lines,” IEEE Sensors J., vol. 17,
no. 4, pp. 1069–1083, Feb. 2017.
K.-L. Chen, Y. Guo, and X. Ma, “Contactless voltage sensor for overhead
transmission lines,” IET Gener., Transmiss. Distrib., vol. 12, no. 4,
pp. 957–966, Feb. 2018.
S. Kang, S. Yang, and H. Kim, “Non-intrusive voltage measurement of
AC power lines for smart grid system based on electric field energy
harvesting,” Electron. Lett., vol. 53, no. 3, pp. 181–183, Feb. 2017.
K. Nakano, “Non-contact voltage measurement method and device, and
detection probe,” U.S. Patent 6 825 649 B2, Nov. 30, 2004.
P. S. Shenil, R. Arjun, and B. George, “Feasibility study of a noncontact
AC voltage measurement system,” in Proc. IEEE I2MTC, Pisa, Italy,
May 2015, pp. 399–404.
P. S. Shenil and B. George, “An efficient digitizer for non-intrusive AC
voltage measurement,” in Proc. IEEE I2MTC, Turin, Italy, May 2017,
pp. 1–6.
P. S. Shenil and B. George, “An auto-balancing scheme for non-contact
AC voltage measurement,” in Proc. IEEE Int. Workshop Appl. Meas.
Power Syst. (AMPS), Bologna, Italy, Sep. 2018, pp. 1–5.
Shenil, P. S., and Boby George. “Nonintrusive AC Voltage Measurement
Unit Utilizing the Capacitive Coupling to the Power System
Ground.” IEEE Transactions on Instrumentation and Measurement 70
(2020): 1–8.
Thomas, Ajith John, C. Iyyappan, and C. Chakradhar Reddy. “A
method for surface voltage measurement of an overhead insulated conductor.”
IEEE Transactions on Instrumentation and Measurement 70
(2020): 1–8.
Analog Devices, AD 7747 Eval Board, Datasheet. 2007. [Online]. Available:
https://www.analog.com/media/en/technical-documentation/data
-sheets/AD7747.pdf
Lucas Nuelle. 2021. Transformer protection. Available: https://www.lu
cas-nuelle.us/
