Research and application of key technologies in drawing energy storage operation chart by discriminant coefficient method. (1st November 2016)

• Record Type: Journal Article
• Authors: Jiang, Zhiqiang; Li, Anqiang; Ji, Changming; Qin, Hui; Yu, Shan; Li, Yuanzheng
• Is Part Of: Energy. Volume 114(2016)
• Page Start: 774
• Page End: 786
• Publication Date: 2016-11-01
• Subjects: Cascade reservoirs -- Operation chart -- Drawing model -- Key technologies -- Discriminant coefficient method; Power resources -- Periodicals; Power (Mechanics) -- Periodicals; Energy consumption -- Periodicals; 333.7905
• DOI: 10.1016/j.energy.2016.08.043
• Languages: English
• ISSNs: 0360-5442

Abstract

Abstract: Discriminant coefficient method (DCM) is a traditional method in guiding the cascade reservoirs joint operation, but it cannot be well used directly in the practical application. This paper combined DCM with the cascade reservoirs energy storage operation chart (CRESOC) and proposed a new DCM based drawing model. In addition, three key technologies in the drawing process and one key technology in the practical application were studied emphatically, which can realize the combined utilization of DCM and CRESOC perfectly. In the case study, we took the cascade reservoirs of Li Xianjiang River in southwest China as an instance to study the CRESOC by the proposed drawing model. Compared with the existing single reservoir operation charts, the simulation results show that the CRESOC presents better performance in terms of power generation and assurance rate, especially on the latter, which has a growth of 6.8%. Moreover, in order to eliminate the insufficient of DCM in practical application, the boundary control curves of each reservoir for water storage and water supply were optimized by the proposed optimization technique, and the simulation results show that there is no water abandonment in all the 43 dry seasons after the optimization. Highlights: We proposed a drawing model for CRESOC based on DCM. Three key technologies in drawing CRESOC based DCM are analyzed and studied. A DCM, CRESOC and boundary control curves based joint operation method is proposed. 6.8% growth on guaranteed output can be obtained by CRESOC. 0.41% growth on power generation can be obtained by CRESOC.