Operational Characteristics Assessment of a Wind–Solar–Hydro Hybrid Power System with Regulating Hydropower
Renewable energy generation technology, as an alternative to traditional coal-fired power generation, is receiving increasing attention. However, the intermittent characteristics of wind and solar energy pose certain challenges to the stable operation of power grids. This requires a better understan...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-11-01
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| Series: | Water |
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| Online Access: | https://www.mdpi.com/2073-4441/15/23/4051 |
| _version_ | 1797399471952232448 |
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| author | Yulong Li Zhoubo Tong Jingjing Zhang Dong Liu Xuhui Yue Md Apel Mahmud |
| author_facet | Yulong Li Zhoubo Tong Jingjing Zhang Dong Liu Xuhui Yue Md Apel Mahmud |
| author_sort | Yulong Li |
| collection | DOAJ |
| description | Renewable energy generation technology, as an alternative to traditional coal-fired power generation, is receiving increasing attention. However, the intermittent characteristics of wind and solar energy pose certain challenges to the stable operation of power grids. This requires a better understanding of the operational characteristics of renewable energy to improve the comprehensive efficiency. To achieve this, firstly, four indicators (i.e., average fluctuation magnitude, Richards–Baker flashiness, average climbing rate, and change in the time-averaged value) within a single-evaluation-indicator framework are proposed to quantitatively evaluate the fluctuation characteristics of wind, solar, and hydropower and a wind–solar–hydro hybrid power system. Secondly, a comprehensive evaluation indicator is developed by scientifically assigning and recombining the four indicators using entropy weight theory. Furthermore, the comprehensive evaluation index is applied to the wind–solar–hydro hybrid power system to determine the operational characteristics of subsystems and a complementary system at different time scales. Finally, the load tracking coefficient and coupling degree are used to quantify the complementarity degree of the hybrid power system. It is found that the fluctuation degree of the hybrid power system is smaller than that of the individual power system. Meanwhile, both fluctuation and complementary characteristics are strengthened with the increase in time scale. The proposed methods and results shift the volatility from an abstract concept to concrete representation, providing a new perspective and reference for evaluating the operational characteristics of the hybrid power system to achieve power system planning and scheduling. |
| first_indexed | 2024-03-09T01:40:46Z |
| format | Article |
| id | doaj.art-1eb41bf8764545ed992c03d88e1881e3 |
| institution | Directory Open Access Journal |
| issn | 2073-4441 |
| language | English |
| last_indexed | 2024-03-09T01:40:46Z |
| publishDate | 2023-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Water |
| spelling | doaj.art-1eb41bf8764545ed992c03d88e1881e32023-12-08T15:28:14ZengMDPI AGWater2073-44412023-11-011523405110.3390/w15234051Operational Characteristics Assessment of a Wind–Solar–Hydro Hybrid Power System with Regulating HydropowerYulong Li0Zhoubo Tong1Jingjing Zhang2Dong Liu3Xuhui Yue4Md Apel Mahmud5Power China Hua Dong Engineering Corporation Limited, Hangzhou 311122, ChinaPower China Hua Dong Engineering Corporation Limited, Hangzhou 311122, ChinaCollege of Energy and Power Engineering, North China University of Water Resources and Electric Power, Zhengzhou 450045, ChinaCollege of Energy and Power Engineering, North China University of Water Resources and Electric Power, Zhengzhou 450045, ChinaPower China Hua Dong Engineering Corporation Limited, Hangzhou 311122, ChinaFaculty of Engineering and Environment, Northumbria University, Newcastle NE1 8ST, UKRenewable energy generation technology, as an alternative to traditional coal-fired power generation, is receiving increasing attention. However, the intermittent characteristics of wind and solar energy pose certain challenges to the stable operation of power grids. This requires a better understanding of the operational characteristics of renewable energy to improve the comprehensive efficiency. To achieve this, firstly, four indicators (i.e., average fluctuation magnitude, Richards–Baker flashiness, average climbing rate, and change in the time-averaged value) within a single-evaluation-indicator framework are proposed to quantitatively evaluate the fluctuation characteristics of wind, solar, and hydropower and a wind–solar–hydro hybrid power system. Secondly, a comprehensive evaluation indicator is developed by scientifically assigning and recombining the four indicators using entropy weight theory. Furthermore, the comprehensive evaluation index is applied to the wind–solar–hydro hybrid power system to determine the operational characteristics of subsystems and a complementary system at different time scales. Finally, the load tracking coefficient and coupling degree are used to quantify the complementarity degree of the hybrid power system. It is found that the fluctuation degree of the hybrid power system is smaller than that of the individual power system. Meanwhile, both fluctuation and complementary characteristics are strengthened with the increase in time scale. The proposed methods and results shift the volatility from an abstract concept to concrete representation, providing a new perspective and reference for evaluating the operational characteristics of the hybrid power system to achieve power system planning and scheduling.https://www.mdpi.com/2073-4441/15/23/4051operational characteristicsfluctuation assessmententropy weight theorycomplementary assessmentwind–solar–hydro hybrid power system |
| spellingShingle | Yulong Li Zhoubo Tong Jingjing Zhang Dong Liu Xuhui Yue Md Apel Mahmud Operational Characteristics Assessment of a Wind–Solar–Hydro Hybrid Power System with Regulating Hydropower Water operational characteristics fluctuation assessment entropy weight theory complementary assessment wind–solar–hydro hybrid power system |
| title | Operational Characteristics Assessment of a Wind–Solar–Hydro Hybrid Power System with Regulating Hydropower |
| title_full | Operational Characteristics Assessment of a Wind–Solar–Hydro Hybrid Power System with Regulating Hydropower |
| title_fullStr | Operational Characteristics Assessment of a Wind–Solar–Hydro Hybrid Power System with Regulating Hydropower |
| title_full_unstemmed | Operational Characteristics Assessment of a Wind–Solar–Hydro Hybrid Power System with Regulating Hydropower |
| title_short | Operational Characteristics Assessment of a Wind–Solar–Hydro Hybrid Power System with Regulating Hydropower |
| title_sort | operational characteristics assessment of a wind solar hydro hybrid power system with regulating hydropower |
| topic | operational characteristics fluctuation assessment entropy weight theory complementary assessment wind–solar–hydro hybrid power system |
| url | https://www.mdpi.com/2073-4441/15/23/4051 |
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