Numerical estimation on balance coefficients of central difference averaging method for quench detection of the KSTAR PF coils

Jinsub Kim, Seok Chan An, Tae Kuk Ko, Yong Chu

Research output: Contribution to journalArticle

Abstract

A quench detection system of KSTAR Poloidal Field (PF) coils is inevitable for stable operation because normal zone generates overheating during quench occurrence. Recently, new voltage quench detection method, combination of Central Difference Averaging (CDA) and Mutual Inductance Compensation (MIK) for compensating mutual inductive voltage more effectively than conventional voltage detection method, has been suggested and studied. For better performance of mutual induction cancellation by adjacent coils of CDA+MIK method for KSTAR coil system, balance coefficients of CDA must be estimated and adjusted preferentially. In this paper, the balance coefficients of CDA for KSTAR PF coils were numerically estimated. The estimated result was adopted and tested by using simulation. The CDA method adopting balance coefficients effectively eliminated mutual inductive voltage, and also it is expected to improve performance of CDA+MIK method for quench detection of KSTAR PF coils.

Original languageEnglish
Pages (from-to)25-29
Number of pages5
JournalProgress in Superconductivity and Cryogenics (PSAC)
Volume18
Issue number3
DOIs
Publication statusPublished - 2016 Sep 1

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Electric potential
Inductance
Compensation and Redress

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

Cite this

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title = "Numerical estimation on balance coefficients of central difference averaging method for quench detection of the KSTAR PF coils",
abstract = "A quench detection system of KSTAR Poloidal Field (PF) coils is inevitable for stable operation because normal zone generates overheating during quench occurrence. Recently, new voltage quench detection method, combination of Central Difference Averaging (CDA) and Mutual Inductance Compensation (MIK) for compensating mutual inductive voltage more effectively than conventional voltage detection method, has been suggested and studied. For better performance of mutual induction cancellation by adjacent coils of CDA+MIK method for KSTAR coil system, balance coefficients of CDA must be estimated and adjusted preferentially. In this paper, the balance coefficients of CDA for KSTAR PF coils were numerically estimated. The estimated result was adopted and tested by using simulation. The CDA method adopting balance coefficients effectively eliminated mutual inductive voltage, and also it is expected to improve performance of CDA+MIK method for quench detection of KSTAR PF coils.",
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Numerical estimation on balance coefficients of central difference averaging method for quench detection of the KSTAR PF coils. / Kim, Jinsub; An, Seok Chan; Ko, Tae Kuk; Chu, Yong.

In: Progress in Superconductivity and Cryogenics (PSAC), Vol. 18, No. 3, 01.09.2016, p. 25-29.

Research output: Contribution to journalArticle

TY - JOUR

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AU - Ko, Tae Kuk

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