Multi-Time Scale Rolling Economic Dispatch for Wind/Storage Power System Based on Forecast Error Feature Extraction

Li Han, Rongchang Zhang, Xuesong Wang and Yu Dong
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Li Han: School of Electrical and Power Engineering, China University of Mining and Technology, Xuzhou 221116, China
Rongchang Zhang: School of Electrical and Power Engineering, China University of Mining and Technology, Xuzhou 221116, China
Xuesong Wang: School of Information and Control Engineering, China University of Mining and Technology, Xuzhou 221116, China
Yu Dong: School of Electrical and Power Engineering, China University of Mining and Technology, Xuzhou 221116, China

Energies, 2018, vol. 11, issue 8, 1-27

Abstract: This paper looks at the ability to cope with the uncertainty of wind power and reduce the impact of wind power forecast error (WPFE) on the operation and dispatch of power system. Therefore, several factors which are related to WPFE will be studied. By statistical analysis of the historical data, an indicator of real-time error based on these factors is obtained to estimate WPFE. Based on the real-time estimation of WPFE, a multi-time scale rolling dispatch model for wind/storage power system is established. In the real-time error compensation section of this model, the previous dispatch plan of thermal power unit is revised according to the estimation of WPFE. As the regulating capacity of thermal power unit within a short time period is limited, the estimation of WPFE is further compensated by using battery energy storage system. This can not only decrease the risk caused by the wind power uncertainty and lessen wind spillage, but also reduce the total cost. Thereby providing a new method to describe and model wind power uncertainty, and providing economic, safe and energy-saving dispatch plan for power system. The analysis in case study verifies the effectiveness of the proposed model.

Keywords: wind power forecast error; factor feature extraction; wind power accommodation; battery energy storage system; real-time error compensation; multi-time scale rolling dispatch (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2018
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (4)

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