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Investigating Daylight Saving Time (DST)Impacts on the Electricity Power Consumption in Iran

Ramezani, Iman | 2023

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 56388 (05)
  4. University: Sharif University of Technology
  5. Department: Electrical Engineering
  6. Advisor(s): Hajipour, Ehsan
  7. Abstract:
  8. This thesis examines the impact of daylight saving time policy on electricity consumption in Iran. After World War I, many countries gradually implemented annual time change laws to extend daylight availability. This involved moving a specific amount of time (usually one hour) forward in early spring and back in early autumn. Historically, the majority of the electricity load on power grids was due to lighting, so this decision made sense. However, with technological advances and diversification of electricity usage, this decision is now being questioned, particularly in light of air conditioning loads, which make up a large part of electricity usage in Iran. These loads have the potential to increase energy consumption during daylight hours due to the implementation of this law. In this research, the effects of implementing or not implementing this law on electrical energy consumption are investigated. It should be noted that many different factors, such as population growth, climate, new usages, etc., affect electricity consumption. For example, even if the implementation and non-implementation of this law were tested for two consecutive years, a definitive conclusion could not be reached based on this national experiment because the practice of this law is only one of several parameters affecting the country’s energy consumption. Therefore, efforts are made to extract the effects of this law from consumption data using appropriate inferential models. Typically, studies on the effect of time change on a country’s energy consumption are based on aggregated national data. However, the effect of time change can vary across different feeders. In this study, it is suggested that an initial clustering should be used to categorize feeders based on the type of consumption (residential, commercial, administrative, etc.), and then separate studies should be conducted for each category. Using real data from several years of consumption in Iran, it is demonstrated that conducting studies with the proposed method can lead to different results than the usual method on aggregated consumption and that the results of the proposed method can be more reliable given the scrutiny in the studies. The final conclusion is that not implementing daylight saving time law in Iran can result in reduced energy consumption but may also cause an increase in peak load. Therefore, peak load management methods should be used in conjunction with the elimination of daylight saving time law to achieve the desired outcome
  9. Keywords:
  10. Energy Policy ; Iran ; Peak Load of Power Consumption ; Difference-in-Difference Method ; Econometrics ; Energy Consumption ; Daylight Saving Time ; Summer Time ; Household Electricity Consumption

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