TITLE:
A Methodology for Identification of Weather Sensitive Component of Electrical Load Using Empirical Mode Decomposition Technique
AUTHORS:
Nahid-Al- Masood, Q. Ahsan
KEYWORDS:
Load; Weather Sensitive Component; EMD; Temperature-Humidity Index; Correlation Coefficient
JOURNAL NAME:
Energy and Power Engineering,
Vol.5 No.4,
June
19,
2013
ABSTRACT: The expansion planning and operation of all three sectors, generation, transmission and distribution, of power system essentially require load forecasting. Weather conditions have significant impacts on forecasted load, especially short-term and mid-term. A momentous portion of the electrical energy is consumed, especially in cold or hot countries, to mitigate the impact of weather on the daily life of human society. Usually, weather dependent component of load is identified by fitting appropriate non-linear curve to the scatter plot of weather-load model. This technique some times shows lower correlation with weather variables. This paper proposes a new methodology to identify the weather sensitive component of electrical load using empirical mode decomposition (EMD) technique. The proposed methodology is applied to the daily peak load of Dhaka zone of Bangladesh Power System (BPS) of the year 2012. A detailed numerical process to evaluate the weather sensitive portion of the load is also presented. The proposed methodology is validated through statistical error evaluation process. Finally the salient features of the results are discussed.