NDLI: Transients Induced on Control Cables and Secondary Circuit of Instrument Transformers in a GIS During Switching Operations

Content Provider	IEEE Xplore Digital Library
Author	Mohana Rao, M. Joy Thomas, M. Singh, B.P.
Copyright Year	1986
Abstract	The transient fields generated during switching operations in gas-insulated substations (GIS) can have rise times in the order of a few nanoseconds. Transient fields, which are developed internally to the gas-insulated modules, leak into the external environment through discontinuities and interfere with nearby electronics. Depending on the configuration of the GIS and the observation point, amplitudes of the electric and magnetic fields could be of the order of a few tens of kilovolts per meter and a few hundreds of amps per meter, respectively. These transient fields, in turn, induce voltages in the control cables and secondary circuit of the instrument transformers, which result in malfunctioning of the primary equipment. In this paper, induced transient voltages in the control circuitry and their frequency spectra have been calculated due to the transient fields, leaking out from the gas-to-air bushing and the gas-insulated bus section of a 245-kV-rated GIS, during switching operations. The effect of the length of control circuit, type of grounding of the cable sheath (both-end/one-end), characteristics of the transient fields, type of secondary circuit (i.e., current transformer/potential transformer) and LC loading of the control circuitry on the induced voltages have been analyzed and reported.
Sponsorship	IEEE Power Engineering Society
Starting Page	1505
Ending Page	1513
Page Count	9
File Size	653376
File Format	PDF
ISSN	08858977
Volume Number	22
Issue Number	3
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2007-07-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Cables Instrument transformers Geographic Information Systems Switching circuits Voltage control Gas insulation Switchgear Substations Magnetic fields Frequency transient voltages Control circuitry gas-insulated substation (GIS) switching transient currents transient fields
Content Type	Text
Resource Type	Article
Subject	Energy Engineering and Power Technology Electrical and Electronic Engineering

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Frequency characteristics of very fast transient currents in a 245-kV GIS

Shielding Effectiveness of the Gas-Insulated Bus Duct for Transient EM Fields Generated in a GIS During Switching Operations

Estimation and Mitigation of Very Fast Transient Over Voltages VFTO Magnitudes by Switching the Lumped Elements in UHV Gas Insulated Switchgear Substations

Comparison Between Suppressing Approaches of Very Fast Transients in Gas-Insulated Substations (GIS)

The electromagnetic effect study of GIS enclosure under high-frequency electromagnetic pulse

Estimation of fast transient overvoltage in gas-insulated substation

Improved Cable Connection to Mitigate Transient Enclosure Voltages in 220-kV Gas-Insulated Substations

Suppression of Fast Transient Overvoltage during Gas Disconnector Switching in GIS

Analysis of very fast transient overvoltages (VFTO) from onsite measurements on 800 kV GIS

Transients Induced on Control Cables and Secondary Circuit of Instrument Transformers in a GIS During Switching Operations

Similar Documents

Frequency characteristics of very fast transient currents in a 245-kV GIS

Shielding Effectiveness of the Gas-Insulated Bus Duct for Transient EM Fields Generated in a GIS During Switching Operations

Estimation and Mitigation of Very Fast Transient Over Voltages VFTO Magnitudes by Switching the Lumped Elements in UHV Gas Insulated Switchgear Substations

Comparison Between Suppressing Approaches of Very Fast Transients in Gas-Insulated Substations (GIS)

The electromagnetic effect study of GIS enclosure under high-frequency electromagnetic pulse

Estimation of fast transient overvoltage in gas-insulated substation

Improved Cable Connection to Mitigate Transient Enclosure Voltages in 220-kV Gas-Insulated Substations

Suppression of Fast Transient Overvoltage during Gas Disconnector Switching in GIS

Analysis of very fast transient overvoltages (VFTO) from onsite measurements on 800 kV GIS

Transients Induced on Control Cables and Secondary Circuit of Instrument Transformers in a GIS During Switching Operations