Study on the streamflow compensation characteristics of reservoirs in Luanhe River Basin based on Copula function
With the rapid development of economy and society, the contradiction between supply and demand of water resources is increasing. Efficient utilization and allocation of limited water resources are one of the main means to solve the above contradictions. In this paper, the multidimensional joint dist...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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IWA Publishing
2022-02-01
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| Series: | Water Supply |
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| Online Access: | http://ws.iwaponline.com/content/22/2/2311 |
| _version_ | 1818319052894896128 |
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| author | Fang Wan Lingfeng Xiao Qihui Chai Li Li |
| author_facet | Fang Wan Lingfeng Xiao Qihui Chai Li Li |
| author_sort | Fang Wan |
| collection | DOAJ |
| description | With the rapid development of economy and society, the contradiction between supply and demand of water resources is increasing. Efficient utilization and allocation of limited water resources are one of the main means to solve the above contradictions. In this paper, the multidimensional joint distribution of natural streamflow series in reservoirs is constructed by introducing the mixed Copula function, and the probability of wet and dry encounters between natural streamflow is analyzed. Luan River is located in the northeastern part of Hebei Province, China, taking the group of Panjiakou Reservoir, Douhe Reservoir and Yuqiao Reservoir in the downstream of Luan River Basin as an example, the probabilities of synchronous and asynchronous abundance and depletion of inflow from the reservoirs are calculated. The results show that the probability of natural streamflow series between reservoirs is 61.14% for asynchronous wetness and dryness, which has certain mutual compensation ability. Therefore, it is necessary to minimize the risk of water supply security in Tianjin, Tangshan and other cities, and strengthen the optimal joint water supply scheduling of reservoirs. The research results are reasonable and reliable, which can provide reference for water supply operation of other basins. HIGHLIGHTS
The mixed Copula function can more flexibly describe the correlation between variables of a hydrological system.;
The M-Copula function is selected as the connection function to fit the joint distribution of runoff between reservoirs.;
The results of the study can be used as a reference for the optimal scheduling of water resources in other basins.; |
| first_indexed | 2024-12-13T10:02:59Z |
| format | Article |
| id | doaj.art-0d34d0100fec46ff884fac348b0d6d89 |
| institution | Directory Open Access Journal |
| issn | 1606-9749 1607-0798 |
| language | English |
| last_indexed | 2024-12-13T10:02:59Z |
| publishDate | 2022-02-01 |
| publisher | IWA Publishing |
| record_format | Article |
| series | Water Supply |
| spelling | doaj.art-0d34d0100fec46ff884fac348b0d6d892022-12-21T23:51:35ZengIWA PublishingWater Supply1606-97491607-07982022-02-012222311232110.2166/ws.2021.380380Study on the streamflow compensation characteristics of reservoirs in Luanhe River Basin based on Copula functionFang Wan0Lingfeng Xiao1Qihui Chai2Li Li3 North China University of Water Resources and Electric Power, Henan Key Laboratory of Water Resources Conservation and Intensive Utilization in the Yellow River Basin, ZhengZhou 450045, China North China University of Water Resources and Electric Power, Henan Key Laboratory of Water Resources Conservation and Intensive Utilization in the Yellow River Basin, ZhengZhou 450045, China North China University of Water Resources and Electric Power, Henan Key Laboratory of Water Resources Conservation and Intensive Utilization in the Yellow River Basin, ZhengZhou 450045, China Institute of Geo-environment Survey of Henan, ZhengZhou 450000, China With the rapid development of economy and society, the contradiction between supply and demand of water resources is increasing. Efficient utilization and allocation of limited water resources are one of the main means to solve the above contradictions. In this paper, the multidimensional joint distribution of natural streamflow series in reservoirs is constructed by introducing the mixed Copula function, and the probability of wet and dry encounters between natural streamflow is analyzed. Luan River is located in the northeastern part of Hebei Province, China, taking the group of Panjiakou Reservoir, Douhe Reservoir and Yuqiao Reservoir in the downstream of Luan River Basin as an example, the probabilities of synchronous and asynchronous abundance and depletion of inflow from the reservoirs are calculated. The results show that the probability of natural streamflow series between reservoirs is 61.14% for asynchronous wetness and dryness, which has certain mutual compensation ability. Therefore, it is necessary to minimize the risk of water supply security in Tianjin, Tangshan and other cities, and strengthen the optimal joint water supply scheduling of reservoirs. The research results are reasonable and reliable, which can provide reference for water supply operation of other basins. HIGHLIGHTS The mixed Copula function can more flexibly describe the correlation between variables of a hydrological system.; The M-Copula function is selected as the connection function to fit the joint distribution of runoff between reservoirs.; The results of the study can be used as a reference for the optimal scheduling of water resources in other basins.;http://ws.iwaponline.com/content/22/2/2311luan river basinmixed copula functionreservoir water-supply dispatchingstreamflow compensation characteristics |
| spellingShingle | Fang Wan Lingfeng Xiao Qihui Chai Li Li Study on the streamflow compensation characteristics of reservoirs in Luanhe River Basin based on Copula function Water Supply luan river basin mixed copula function reservoir water-supply dispatching streamflow compensation characteristics |
| title | Study on the streamflow compensation characteristics of reservoirs in Luanhe River Basin based on Copula function |
| title_full | Study on the streamflow compensation characteristics of reservoirs in Luanhe River Basin based on Copula function |
| title_fullStr | Study on the streamflow compensation characteristics of reservoirs in Luanhe River Basin based on Copula function |
| title_full_unstemmed | Study on the streamflow compensation characteristics of reservoirs in Luanhe River Basin based on Copula function |
| title_short | Study on the streamflow compensation characteristics of reservoirs in Luanhe River Basin based on Copula function |
| title_sort | study on the streamflow compensation characteristics of reservoirs in luanhe river basin based on copula function |
| topic | luan river basin mixed copula function reservoir water-supply dispatching streamflow compensation characteristics |
| url | http://ws.iwaponline.com/content/22/2/2311 |
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