Tham khảo tài liệu 'wind power 2011 part 18', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | Large Scale Integration of Wind Power in Thermal Power Systems 493 Which are the mechanisms behind the increase decrease in emissions under the four different integration strategies Figure 9 shows a weekly time series of the total consumption of electricity divided into consumption of household and industry white and 1 11 21 31 41 51 61 71 81 91 101 111 121 131 141 151 161 Hour of the week a. b. Fig. 9. Total electricity consumption in the system modelled by Goransson et al. 2009 divided into consumption of household and industry white and consumption of vehicles black . The example shown is for 12 PHEV share of electricity consumption. a S-DIR integration strategy where consumption of households and industry is strongly correlated with the consumption of vehicles. b S-DELAY strategy where a shift in charging start time decreases the correlation and evens out overall electricity consumption. This smoothening of electricity consumption through a decrease in correlation is in this work referred to as the correlation mechanism. Source Goransson et al. 2009 494 Wind Power consumption of PHEV vehicles black . Data of the household and industry consumption was obtained from Energinet Energinet 2006 and PHEV consumption was taken from Goransson et al. 2009 . In Figure 9 the PHEV consumption is 12 of the total electricity consumption and the household and industry consumption is scaled down to 88 . As can be seen from Figure 9a in the S-DIR strategy . vehicles are charged as soon as they return home the PHEV integration in the system does not imply a smoothening of the total load but rather an accentuation of the peaks. As PHEV s are integrated under the S-DIR strategy there is a decrease in the amount of thermal units which can run continuously and most units also have to cover peak load. The result is an increase in emissions from the power generation system compared to the reference case without PHEV s cf. Figure 8 . Applying the S-DELAY strategy . where vehicle .
