NDLI: Manufacturing and Test of a 35 kV/90 MVA Saturated Iron-Core Type Superconductive Fault Current Limiter for Live-Grid Operation

Content Provider	IEEE Xplore Digital Library
Author	Yin Xin Gong, W.Z. Niu, X.Y. Gao, Y.Q. Guo, Q.Q. Xiao, L.X. Cao, Z.J. Hong, H. Wu, A.G. Li, Z.H. Hu, X.M. Tian, B. Zhang, J.Y. He, Y. Wang, Y. Cui, J. Ding, S.Z. Wang, J.Z. Ren, A.L. Ye, F.
Copyright Year	2002
Abstract	We developed a saturated iron-core type 35 kV/90 MVA superconductive fault current limiter and installed the device in a transmission network at Puji substation of China Southern Power Grid for live-grid operation. Innovative design in the iron-core configuration ensures that the device has low impedance in normal power transmission and sufficiently high impedance for a fault current limiting action. A magnetization control circuit allows the iron-core to be saturated or de-saturated depending upon the functional requirements. An energy release and voltage-surge protection unit can promptly discharge the magnetic energy accumulated in the iron-core and suppress the induced and surge voltages of the dc circuit in a current limiting event. This device has been designed to reduce the magnitude of a fault current by about 50%, which will prevent the breaking capacity of the existing circuit breakers in the transmission network from being exceeded in the predictable future. This article presents structural and functional specifications and reports up-to-date live-grid operation data of the device.
Sponsorship	Council on Superconductivity Appl. Superconductivity Conference Inc MIT
Starting Page	1934
Ending Page	1937
Page Count	4
File Size	266093
File Format	PDF
ISSN	10518223
Volume Number	19
Issue Number	3
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-06-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Manufacturing Testing Superconductivity Fault current limiters Impedance Fault currents Magnetic circuits Voltage Substations Power grids superconducting devices Current limiters saturable cores short circuit currents superconducting coils
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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