Short-Term Scheduling of Expected Output-Sensitive Cascaded Hydro Systems Considering the Provision of Reserve Services

Ruhong Zhong, Chuntian Cheng, Shengli Liao and Zhipeng Zhao
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Ruhong Zhong: Institute of Hydropower System & Hydroinformatics, Dalian University of Technology, Dalian 116024, China
Chuntian Cheng: Institute of Hydropower System & Hydroinformatics, Dalian University of Technology, Dalian 116024, China
Shengli Liao: Institute of Hydropower System & Hydroinformatics, Dalian University of Technology, Dalian 116024, China
Zhipeng Zhao: Institute of Hydropower System & Hydroinformatics, Dalian University of Technology, Dalian 116024, China

Energies, 2020, vol. 13, issue 10, 1-15

Abstract: The integration of large-scale wind and solar power into the power grid brings new challenges to the security and stability of power systems because of the uncertainty and intermittence of wind and solar power. This sensitive expected output has real implications for short-term hydro scheduling (STHS), which provides reserve services to alleviate electrical perturbations from wind and solar power. This paper places an emphasis on the sensitive expected output characteristics of hydro plants and their effect on reserve services. The multi-step progressive optimality algorithm (MSPOA) is used for the STHS problem. An iterative approximation method is proposed to determine the forebay level and output under the condition of the sensitive expected output. Cascaded hydro plants in the Wujiang River are selected as an example. The results illustrate that the method can achieve good performance for peak shaving and reserve services. The proposed approach is both accurate and computationally acceptable so that the obtained hydropower schedules are in accordance with practical circumstances and the reserve can cope with renewable power fluctuations effectively.

Keywords: short-term hydro scheduling; peak shaving; multi-step progressive optimality algorithm; sensitive expected output; reserve services (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: 2020
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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