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Short-term Power Load Forecasting Based on Phase Space Reconstruction and EMD-ELM
Zou Hongbo,Yang Qinhe,Chen Junting,Chai Yanhui 대한전기학회 2023 Journal of Electrical Engineering & Technology Vol.18 No.5
With the increasing complexity of the world energy structure, the uncertainty of the power system increases significantly, and the accuracy of the short-term power load forecasting is of great significance to the safe, economical and reliable operation of the power system. In order to further improve the accuracy of short-term power load forecasting, this paper innovatively combines the theories such as phase space reconstruction, empirical mode decomposition, and extreme learning machine to establish a new short-term power load forecasting model based on phase space reconstruction and EMD-ELM. The prediction results show that the root means square error, average relative error and global maximum relative error of the short-term power load forecasting model based on phase space reconstruction and EMD-ELM are much smaller than other forecasting models, which verifies the correctness and effectiveness of the short-term load forecasting method.
Yinji Liang,Chenli Lin,Yuanjun Deng,Yupei Zhang,Qinhe Yang 경희대학교 융합한의과학연구소 2022 Oriental Pharmacy and Experimental Medicine Vol.22 No.2
Non-alcoholic fatty liver disease (NAFLD) is one of the most common chronic liver diseases in adults around China and the world. The study explores protective effect of traditional Chinese medicine Chaihu-Shugan-San decoction on high-fat diet-induced liver steatosis in rats via intestinal microbiota metabolite short-chain fatty acids (SCFAs) and its receptor Gpr43/109a. Fifteen male Sprague–Dawley rats were randomly divided into three groups of five rats each: the control group (standard diet), High-fat diet (HFD)-induced NAFLD group (83% standard diet + 10% lard oil + 5% sucrose + 1.5% cholesterol + 0.5% cholate), and Chaihu-Shugan-San (CSS)-treated group (HFD + 9.6 g/kg body weight gastric administration of CSS decoction every day). Body composition, hepatic fat, intestinal mucosal permeability and SCFAs, Gpr43 and Gpr109a expression in colonic tissues were assessed. Compared with NAFLD group, CSS decoction significantly reduced body weight, liver weight, hepatic triglyceride and total cholesterol (P < 0.05), and increased colonic SCFAs and occludin expression. The levels of Gpr43 and Gpr109a also changed significantly (P < 0.05). Protective effect of CSS decoction in HFD-induced NAFLD rats might improve intestinal mucosal permeability and intestinal microbiota metabolite SCFAs through Gpr43 and Gpr109a pathways in colonic tissues.