Abstract
Transient electromagnetic disturbance induced by disconnector and circuit breaker operations in gas insulated switchgear (GIS) has a serious impact on electronic equipment in substation secondary system. Typical forms of transient electromagnetic disturbance are space electromagnetic radiation and transient enclosure voltage (TEV) in GIS. Transient electromagnetic disturbance can be easily coupled to the internal of electronic devices in many ways and one of the coupling paths is power ports of electronic devices. This paper highlights the coupling mechanism and characteristics of electromagnetic disturbance to electronic equipment through its power port. Discharge in a SF6 gap is used to simulate the complex electromagnetic process generated by switching operations in GIS, and then the coupled electromagnetic disturbance in power supply ports of common field operation devices is measured in order to obtain the coupling mechanism and characteristics of electromagnetic disturbance during switching operations. Discharge experiment results show that the main frequency components of electromagnetic disturbance in power supply ports are 1.2 MHz and 8.2 MHz, and meanwhile there are also 20–60 MHz and 120–140 MHz frequency components. The relationship between power port coupled disturbance and TEV on shielding box in test system is nearly linear. Furthermore, a deeply suppression isolation transformer is designed to decrease electromagnetic disturbance based on frequency characteristics of electromagnetic disturbance, and the structure and installation method of the transformer are given. Shielding performance tests are carried out to the transformer through frequency sweep and discharge experiment. Results show the shielding effectiveness of the transformer is up to −60 dB at the frequency components lower than 20 MHz and −40 dB below 68 MHz, which demonstrates that the suppression structure can protect the power port of secondary equipment in substation.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
References
Shu, Y., Chen, W., Li, Z.: Recent progress in investigations on very fast transient overvoltage in gas insulated switch-gear. IEEE Trans. Power Deliv. 28(1), 458–466 (2013)
Cai, Y., Guan, Y., Liu, W.: Statistical characteristics of transient enclosure voltage in ultra-high-voltage gas-insulated switchgear. Plasma Sci. Technol. 19(6), 74–81 (2017)
Cai, Y., Guan, Y., Liu, W.: Experimental study on the relationship between transient enclosure voltage and very fast transient overvoltage. In: 19th International Symposium on High Voltage Engineering, Pilsen, Czech Republic (2015)
Zhang, B., Cui, X., Zhao, Z.: Numerical analysis of the influence between large grounding grids and two-end grounded cables by the moment method coupled with circuit equations. IEEE Trans. Power Deliv. 20(2), 731–737 (2005)
Narimatsu, S., Yamaguchi, K., Nakano, S.: Interrupting performance of capacitive current by disconnecting switch for gas insulated switchgear. IEEE Trans. Power Apparatus Syst. PAS 100(6), 2726–2732 (1981)
Cai, Y., Guan, Y., Liu, W.: Study of transient enclosure voltage coupling to secondary cables in a gas-insulated substation. IEEE Trans. Power Deliv. 33(2), 761–768 (2018)
Ari, N., Blumer, W.: Transient electromagnetic fields due to switching operations in electric power systems. IEEE Trans. Electromagn. Compat. 29(3), 233–237 (1987)
Thomas, D., Wiggins, C.: Prediction of electromagnetic field and current transients in power transmission and distribution systems. IEEE Trans. Power Deliv. 4(1), 744–755 (1989)
Kostin, M., Matveyev, M., Zhivodernikov, S.: Some results of EMC investigations in Russian substations. In: CIGRE, Paris, France (2002)
Imposimato, C., Hoeffelman, J., Eriksson, A.: EMI characterization of HVAC substations - updated data. In: CIGRE, Paris, France (2002)
Ma, G., Li, C., Quan, J.: Measurement of VFTO on transformer entrance with transformer bushing sensor. Proc. CSEE 30(33), 122–128 (2010)
Hu, R., Cui, X., Zhang, W.: Transient enclosure voltage measurement system of UHV GIS and TEV statistical characterization. In: International Symposium on Electromagnetic Compatibility, EMC Europe (2012)
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2020 Springer Nature Switzerland AG
About this paper
Cite this paper
Ge, S., Liu, W. (2020). Experimental Analysis and Suppression for Very Fast Transient Disturbance in Device Power Port During Switching Operation in GIS Substations. In: Németh, B. (eds) Proceedings of the 21st International Symposium on High Voltage Engineering. ISH 2019. Lecture Notes in Electrical Engineering, vol 598. Springer, Cham. https://doi.org/10.1007/978-3-030-31676-1_135
Download citation
DOI: https://doi.org/10.1007/978-3-030-31676-1_135
Published:
Publisher Name: Springer, Cham
Print ISBN: 978-3-030-31675-4
Online ISBN: 978-3-030-31676-1
eBook Packages: EngineeringEngineering (R0)