# 가스 열병합발전 최적 시뮬레이션 분석을 통한 집단에너지 사업자에 미치는 8차 전력 수급계획의 영향 분석

• Kim, Young Kuk (Department of New Energy Engineering, Seoul National University of Science & Technology) ;
• Oh, Kwang Min (Department of New Energy Engineering, Seoul National University of Science & Technology) ;
• Kim, Lae Hyun (Department of Chemical & Biomolecular Engineering, Seoul National University of Science & Technology)
• 김영국 (서울과학기술대학교 신에너지공학과) ;
• 오광민 (서울과학기술대학교 신에너지공학과) ;
• 김래현 (서울과학기술대학교 화공생명공학과)
• Accepted : 2018.08.31
• Published : 2018.10.01

#### Abstract

To respond effectively to climate change following the launch of the new climate system, the government is seeking to expand the use of distributed power resources. Among them, the district heating system centered on Combined Heat and Power (CHP) is accepted as the most realistic alternative. On the other hand, the government recently announced the change of energy paradigm focusing on eco-friendly power generation from the base power generation through $8^{th}$ Basic Plan for Long-term Electricity Supply and Demand(BPE). In this study, we analyzed the quantitative effects of profit and loss on the CHP operating business by changing patterns of the heat production, caused by the change of energy paradigm. To do this, the power market long-term simulation was carried out according to the $7^{th}$ and $8^{th}$ BPE respectively, using the commercialized power market integrated analysis program. In addition, the CHP operating model is organized to calculate the power and heat production level for each CHP operation mode by utilizing the operating performance of 830MW class CHP in Seoul metropolitan area. Based on this, the operation optimization is performed for realizing the maximum operating profit and loss during the life-cycle of CHP through the commercialized integrated energy optimization program. As a result, it can be seen that the change of the energy paradigm of the government increased the level of the ordered power supply by Korean Power Exchange(KPX), decreased the cost of the heat production, and increased the operating contribution margin by 90.9 billion won for the 30 years.

#### References

1. Ministry of Trade, Industry, and Energy "The 8th Basic Plan for Long-term Electricity Supply and Demand", (2017).
2. Korea District Heating and Cooling Association "A Report for Improving and Supporting the Power Market for Energizing the Integrated Energy Business", (2015).
3. Min, S. H., Choi, H. Y. and Yoo, S. H., "Estimation of the Benefits from Integrated Energy-based CHP's Reducing Thermal Discharge : A Comparison with Coal-fired Generation," J. Energy Engineering, 24(4), 223-231(2015).
4. Shin, K. A., Dong, J. I., Kang, J. S., Im, Y. H. and Kim, D. H., "Effects of District Energy Supply by Combined Heat and Power Plant on Greenhouse Gas Emission Mitigation," J. Climate ChangeResearch, 8(3), 213-220(2017).
5. Kim, H. J., Choi, H. Y. and Yoo, S. H., "Measuring the Benefits from Integrated Energy Business-based Combined Heat and Power Plant as a Decentralized Generation Source with a Focus on Avoiding the Damages Caused by Large-scale Transmission Facilities," J. Energy Engineering, 24(3), 67-73(2015). https://doi.org/10.5855/ENERGY.2015.24.3.067
6. Kim, Y. H., Lee, P. H., Kim, Y. G., Jo, H. M. and Woo, S. M., "A Study on Calculation of Combined Heat and Power on Stand-point of Nation and Independent Power Producers," The Transactions of The Korean Institute of Electrical Engineers, 60(5), 905-912(2011). https://doi.org/10.5370/KIEE.2011.60.5.905
7. Lee, J. H. and Lee, B. H., "Optimal Microgrid Operation Considering Fuel Cell and Combined Heat and Power Generation", The Transactions of the Korean Institute of Electrical Engineers, 62(5), 596-603(2013). https://doi.org/10.5370/KIEE.2013.62.5.596
8. Aghaei, J. and Alizadeh, M., "Multi-objective Self-scheduling of CHP (combined heat and power)-based Microgrids Considering Demand Response Programs and ESSs (energy storage systems)," Energy, 55, 1044-1054(2013). https://doi.org/10.1016/j.energy.2013.04.048
9. Motevasel, M., Seifi, A. R. and Niknam, T., "Multi-objective Energy Management of CHP(combined heat and power)-based Micro-grid," Energy, 51, 123-136(2013). https://doi.org/10.1016/j.energy.2012.11.035
10. Cho, H., Luck, R., Eksioglu, S. D. and Chamra, L. M., "Costoptimized Real-time Operation of CHP Systems," Energy and Buildings 41, 445-451(2009). https://doi.org/10.1016/j.enbuild.2008.11.011
11. Abdollahi, E., Wang, H., Rinne, S. and Lahdelma, R., "Optimization of Energy Production of a CHP Plant with Heat Storage," IEEE Green Energy and Systems Conference (IGESC) (2014).
12. Fang, T. and Lahdelma, R., "Optimization of Combined Heat and Power Production with Heat Storage Based on Sliding Time Window Method," Applied Energy, 162, 723-732(2016). https://doi.org/10.1016/j.apenergy.2015.10.135
13. Lund, H. and Andersen, A. N., "Optimal Designs of Small CHP Plants in a Market with Fluctuating Electricity Prices," Energy Conversion and Management, 46, 893-904(2005). https://doi.org/10.1016/j.enconman.2004.06.007
14. Pitec, "Korea Electric Power Trading Analyzer User Manual," (2015).
15. Lee, M. K., "Process and Operating Simulation of District Heat Power Plant System by DH-SEM2," Master's Thesis of Seoul National University of Science & Technology (2015).
16. Sim, M. S., "Operating Optimization and Simulation Using DHSEM2 in CES," Master's Thesis of Seoul National University of Science & Technology (2015).
17. Infotrol., "ENetPlan User Manual", (2016).