The Transactions of The Korean Institute of Electrical Engineers (전기학회논문지)

The Korean Institute of Electrical Engineers (대한전기학회)
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A Study on the Resetting of Incremental Heat Rate Curve of Combined Cycle Unit by Combination

복합발전기 조합별 증분비 곡선 재설정에 관한 연구

  • Received : 2018.09.14
  • Accepted : 2019.01.04
  • Published : 2019.01.01
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Abstract

Combined Cycle Unit(CC) generates the primary power from the Gas Turbine(GT) and supplies the remaining heat of the GT to the Steam Turbine(ST) to generate the secondary power from the ST. It plays a major role in terms of energy efficiency and Load Frequency Control(LFC). Incremental Heat Rate(IHR) curves of economic dispatch(ED) of CC is applied differently by GT/ST combination. But It is practically difficult because of performance test by all combinations. This paper suggests a reasonable method for estimating IHR curves for partial combinations(1:1~(N-1):1) using IHR curves when operating with GT alone(1:0) and with all(N:1) combinations of CC.

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그림 1 GT(1:0)와 CC(3:1)의 증분비 곡선 Fig. 1 GT(1:0) and CC(3:1) IHR Curve

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그림 2 GT와 CC의 증분비 곡선 Fig. 1 GT and CC IHR Curve

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그림 3 복합발전기의 GT/ST 조합별 증분비 곡선 Fig.3 IHR Curve of CC by GT/ST Combination

표 1 GT/ST 증분비 곡선에 대한 좌표 Table 1 GT/ST IHR Curve Coordinate

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표 2 GT/ST 증분비 곡선에 대한 좌표 Table 2 GT/ST IHR Curve Coordinate

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표 3 복합발전기 증분비 곡선 개선 전후 비교 Table 3 CC Generator IHR before and after compare

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References

  1. Allen J. Wood, Bruce F. Wollenberg, Gerald B. Shebla (c), "Power Generation, Operation, and Control", Wiley, pp. 6-21, 63-69, 2013
  2. Jae-Hyo Jang, "Improved Automatic Generation Control Algorithm for Stabilized Operation of National Power Grid", Gyeongsang National University Graduate School, 2015. 8
  3. F. Gao, G. B. Sheble, "Stochastic Optimization Techniques for Economic Dispatch with Combined Cycle Units", IEEE, 2006