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Santiago Cautin Concepcion Chanaral ▲ ▲ ▲ ▼ i : a substation node j : a power plant node aij: electricity supply from j to i dij : transmission distance from j to i nhd(i) : neighbor nodes of i Edi : energy distance of i i j Power plant Substation Transmission distance dij Electricity supply aij Ed i = f (a ij , d ij ) j∈ nhd (i ) k ∑ f (a ij , d ij ) j∈ nhd (i ) k ∑ i =1 n ∑ Transmission load Department of Energy Science, SKKU Network Analysis on Electric Power Grid for Environmental Impacts allocation Heetae Kim, Petter Holme BK21 Workshop, 5~6 Feb. 2015, Daemyung Resort, Yangpyeong Abstract g CO2/ kWh GWh 0.006 325 0.266 13,450 0.157 7,946 0.285 14,385 0.027 1,358 0.020 1,013 0.239 12,072 Greenhouse gas (GHG) emissions of Chilean electric power system = 23.02 Mt CO2-eq Transmission distance Electricity consumption 1200 MWh 4000 km 0 0 Electricity consumption causes environmental impacts such as greenhouse gas emissions. If one is responsible for environmental impacts of the electricity consumption, how should the impacts be allocated? In this study, we introduce a method of environmental impacts allocation. At first, we use life cycle assessment to estimate the total greenhouse gas emissions of electric power system. Then, we apply network analysis to calculate the comprehensive system load of electric power system for each user. Finally, the environmental impacts of each user are calculated considering both transmission distance and the amount of consumption. Environmental impacts References and acknowledgement Standard LCA protocol, ISO 14044, ISO (2006) CDEC-SIC Annual report (2014) Lo, K. L. et. al (2007) Generation, Transmission & Distribution, IET. 1(6) 904-911 Newman, M.E.J. (2010). Networks: An Introduction. Oxford, UK: Oxford University Press. National Research Foundation in Korea Contact Kim Heetae [email protected] Ph.D. candidate Energy system / Network analysis / Life cycle assessment 50km 676 66000 kt CO2 30000 Result Conclusions by energy distance by consumption Regional greenhouse gas emissions allocated Network analysis on electric power grid ↳ Useful complement to LCA analysis Transmission load adjusted allocation ↳ Consider both of electricity consumption and transmission distance Re-allocate environmental impacts to users ↳ Life cycle assessment on GHG emissions ↳ Energy distance analysis ↳ Make the fair allocation possible 4400 4800 5200
