Stabilization of the KSTAR power system for the first plasma operation

Author

Kong, J.D. ; Hong, S.L. ; Hwang, I.S. ; Choi, J.H. ; Kim, C.H. ; Lee, D.K. ; Kim, Y.S. ; Kwon, M. ; Park, B.J. ; Yoo, H.K.

Author_Institution

KSTAR Res. Center, NFRI, Daejeon, South Korea

fYear

2009

fDate

1-5 June 2009

Firstpage

1

Lastpage

4

Abstract

The KSTAR (Korea Superconducting Tokamak Advanced Research) facility is composed of thirty superconducting magnets for plasma experiment. The electric power system for the first plasma operation is made up of various electric devices including 170 kV GIS, 154 kV 50 MVA transformer, 22.9 kV circuit breaker systems and RPC & HF systems. When PF MPS was operated, reactive power and harmonic currents of 1Â±12 ns occurred instantaneously in the KSTAR electric power system due to the characteristics of the KSTAR superconducting coil for the first plasma generation. However, the measured voltage drop and harmonics seriously affect other experiment equipments as well. Therefore, the RPC & HF system for the superconducting tokamak device is important to compensate the reactive power and remove harmonics. In this paper, we discuss the stability of the electric power system and the operation results of the RPC & HF systems during the KSTAR first plasma operation. Also, the upgrade plan of the electric power system based on the KSTAR operation plan will be discussed.

Keywords

Tokamak devices; circuit breakers; electric potential; fusion reactor operation; plasma toroidal confinement; power harmonic filters; power transformers; reactive power; superconducting coils; superconducting magnets; GIS; HF systems; KSTAR power system; Korea Superconducting Tokamak Advanced Research; RPC; apparent power 50 MVA; circuit breaker systems; electric devices; electric power system; harmonic currents; harmonic filter; plasma generation; plasma operation; reactive power compensator; superconducting coil; superconducting magnets; toroidal field; transformer; voltage 154 kV; voltage 22.9 kV; voltage drop; Hafnium; Plasma devices; Plasma measurements; Plasma stability; Power system harmonics; Power systems; Reactive power; Superconducting coils; Superconducting magnets; Tokamaks; KSTAR; componen; harmonic filter; harmonics; power system; recactive power compensator;

fLanguage

English

Publisher

ieee

Conference_Titel

Fusion Engineering, 2009. SOFE 2009. 23rd IEEE/NPSS Symposium on

Conference_Location

San Diego, CA

Print_ISBN

978-1-4244-2635-5

Electronic_ISBN

978-1-4244-2636-2

Type

conf

DOI

10.1109/FUSION.2009.5226394

Filename

5226394