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Demand response potential evaluation of a zero carbon hydrogen metallurgy system considering shaft furnace's flexibility

Qiang Ji, Lin Cheng, Kaidi Huang, Junxin Lv, Yue Zhou, Zeng Liang

Abstract

The increasing penetration of intermittent renewable energy sources and the retirement of thermal units have widened the power system flexibility gap. Industrial demand response (DR) driven by real-time pricing is widely regarded as a viable solution. In this paper, we propose a framework to quantify the DR potential of a zero-carbon hydrogen metallurgy system (ZCHMS) considering shaft furnace's flexibility. First, we model the shaft furnace as a constrained flexible load and validate the model via simulation, achieving a root mean square error of 4.48\% of the rated load. Second, we formulate a DR potential evaluation method that determines baseline and DR-based production scheduling schemes by minimizing operating cost subject to production orders. Finally, the numerical results show that compared with the baseline, DR-based ZCHMS reduces operating cost by 6.6\%, incentivizing demand-side management in ironmaking and strengthening power-ironmaking synergies.

Demand response potential evaluation of a zero carbon hydrogen metallurgy system considering shaft furnace's flexibility

Abstract

The increasing penetration of intermittent renewable energy sources and the retirement of thermal units have widened the power system flexibility gap. Industrial demand response (DR) driven by real-time pricing is widely regarded as a viable solution. In this paper, we propose a framework to quantify the DR potential of a zero-carbon hydrogen metallurgy system (ZCHMS) considering shaft furnace's flexibility. First, we model the shaft furnace as a constrained flexible load and validate the model via simulation, achieving a root mean square error of 4.48\% of the rated load. Second, we formulate a DR potential evaluation method that determines baseline and DR-based production scheduling schemes by minimizing operating cost subject to production orders. Finally, the numerical results show that compared with the baseline, DR-based ZCHMS reduces operating cost by 6.6\%, incentivizing demand-side management in ironmaking and strengthening power-ironmaking synergies.

Paper Structure

This paper contains 14 sections, 30 equations, 6 figures, 2 tables.

Table of Contents

  1. Introduction
  2. The production process of ZCHMS and limited flexibility model of SF
  3. The production process of ZCHMS
  4. Limited flexibility model of SF
  5. The components operation models of ZCHMS
  6. DR potential evaluation framework of ZCHMS
  7. Baseline production scheme
  8. DR potential evaluation under real-time pricing
  9. Evaluation metrics
  10. Case Study
  11. Operating results of baseline
  12. Operating results of ZCHMS with AE flexibility
  13. Operating results of ZCHMS with AE and SF flexibility
  14. Conclusion

Figures (6)

  • Figure 1: The zero-carbon hydrogen metallurgy production system
  • Figure 2: Dynamic regulation processes of SF under simulation data and the identifier model. (a) Discharge flow rate of DRI. (b) Metallization rate of DRI
  • Figure 3: The operational conditions of ZCHMS
  • Figure 4: Operation results of baseline. (a) Discharge flow rate of DRI and power of AE; (b) Purchasing/selling electricity and Soc.
  • Figure 5: Operation results of ZCHMS with AE flexibility. (a) Discharge flow rate of DRI and power of AE; (b) Purchasing/selling electricity and Soc.
  • ...and 1 more figures