Fire Science and Engineering (한국화재소방학회논문지)

Korean Institute of Fire Science and Engineering (한국화재소방학회)
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A Study on the Development of Fire Extinguishing Agent and Extinguishing System for ESS Fire

ESS 화재전용 소화약제 및 소화시스템 개발에 관한 연구

  • Received : 2020.01.09
  • Accepted : 2020.02.10
  • Published : 2020.04.30
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Abstract

This paper presents a study on the development of a fire extinguishing agent and extinguishing system for an energy storage system (ESS) fire. The fire extinguishing agent designed to extinguish an ESS fire is a highly permeable fire extinguisher that reduces the surface tension and viscosity while bringing about cooling action. This is the main extinguishing effect of this type of wetting agent, which displays the characteristics of fire extinguishing agents used for penetrating the battery cells inside the ESS module. For the fire extinguishing system, a local application system was designed to suppress fire on a rack-by-rack basis. A 360° rotating nozzle was inserted into the rear hall of the ESS module, and general nozzles were installed in the rack to maximize the fire extinguishing effect. The fire extinguishing agent was strongly discharged by virtue of the gas release pressure. Experiments on fire suppression performance with ESS module 1 unit and module 3 units showed that all visible flames were extinguished in 8 s and 9 s, respectively, by the fire extinguishing agent. In addition, based on confirming reignition for 600 s after the fire extinguishing agent was exhausted, it was confirmed that the ESS fire was completely extinguished without reignition in all fire suppression performance experiments.

본 논문은 ESS 화재전용 소화약제 및 소화시스템 개발에 관한 연구이다. ESS 화재를 진압하기 위해 제작된 소화약제는 침윤제 타입으로 주된 소화효과인 냉각작용과 더불어 질식작용과 함께 표면장력 및 점도를 낮춘 침투성이 높은 소화약제로 ESS 모듈 내부의 배터리 셀까지 소화약제가 침투 가능한 특징이 있다. 소화시스템의 경우 랙 단위로 화재를 진압하는 국소방출방식으로 설계하였고, 소화효과를 극대화하기 위해 랙에 장착되는 일반형 노즐과 ESS 모듈 후면 홀에 삽입하는 360° 회전형 노즐을 제작하고, 가스방출압력에 의해 소화약제가 강하게 방사되도록 하였다. ESS 모듈 1단위 및 모듈 3단위 화재진압성능 실험결과 소화약제 방사 후 각각 8 s 및 9 s 만에 눈에 보이는 화염이 모두 소멸되었다. 또한, 소화약제 방사종료 후 600 s 동안 재발화 여부를 확인한 결과 모든 화재진압성능 실험에서 재발화가 일어나지 않고 ESS 화재가 완벽히 진압되는 것을 확인할 수 있었다.

Keywords

References

  1. Y. S. Yoon, J. H. Choi, Y. L. Choi, Y. T. Shin and J. B. Kim, "A Study on the Economic Analysis Method of Energy Storage System", Journal of the Korea Institute of Information and Communication Engineering, Vol. 19, No. 3, pp. 596-606 (2015). https://doi.org/10.6109/jkiice.2015.19.3.596
  2. S. K. Kim, S. G. Choi, S. Y. Jin and S. S. Bang, "An Experimental Study on Fire Risks Due to Overcharge and External Heat of ESS Lithium Battery", Fire Science and Engineering, Vol. 33, No. 4, pp. 59-69 (2019). https://doi.org/10.7731/KIFSE.2019.33.4.059
  3. K. Y. Lim, "Economic Analysis Through the Case Study of BEMS Connected with PV Power Generation and ESS", The Graduate School of Engineering Yonsei University, Academic Thesis, p. 8 (2018).
  4. K. M. Park, J. H. Kim, J. Y. Park and S. B. Bang, "A Study on the Fire Risk of ESS through Fire Status and Field Investigation", Fire Science and Engineering, Vol. 32, No. 6, pp. 91-99 (2018). https://doi.org/10.7731/KIFSE.2018.32.6.091
  5. National Fire Agency 119, "National Fire Data System" (2017-2019).
  6. http://www.motie.go.kr/motie/ne/presse/press2/bbs/bbsView.do?bbs_cd_n=81&bbs_seq_n=161771 (2019).
  7. http://www.kemco.or.kr/web/kem_home_new/info/news/notice/kem_view.asp?q=21893 (2019).
  8. http://fpn119.co.kr/103958 (2018).
  9. B. J. Jeong, M. O. Yoon and J. Lee, "A Study on the Hazard Categorization and Loss Prevention Standards of Lithium-ion Battery Manufacturing Occupancies", Journal of the Korean Society of Hazard Mitigation, Vol. 19, No. 1, pp. 249-256 (2019). https://doi.org/10.9798/kosham.2019.19.1.249
  10. N. E. Kwon, "Energy Storage System (ESS) Study on Fire Safety", The Graduate School of Engineering Kyonggi University, Academic Thesis, pp. 1-63 (2019).
  11. UL 9540A, "Test Method for Evaluating Thermal Runaway Fire Propagation in Battery Energy Storage Systems" (2018).
  12. KC 62619, "Secondary Cells and Batteries Containing Alkaline or Other Non-acid Electrolytes - Safety Requirements for Secondary Lithium Cells and Batteries, for Use in Industrial Applications" (2019).