@article{FANG2024, 
author = {Guohua FANG and Haizheng WANG and Chengjun WU and Xianfeng HUANG and Zhongmei WANG},
title = {Study on mid- and long-term multi-objective optimal operation of cascade reservoirs considering water abandonment risk},
year = {2024},
journal = {Water Resources Protection},
volume = {40},
number = {6},
pages = {20-27},
keywords = {water abandonment risk, cascade reservoirs, critical abandonment probability, generation operation, ecological operation, multi-objective optimization, Wujiang cascade reservoir group},
url = {https://www.sciopen.com/article/10.3880/j.issn.1004-6933.2024.06.003},
doi = {10.3880/j.issn.1004-6933.2024.06.003},
abstract = {Aiming at the problem of significant deviation between the calculation results of abandoned water risk in existing hydropower stations and the actual situation, based on the principle of water balance, a cascade reservoir abandoned water risk quantification method coupling runoff and load dual uncertainties was proposed by identifying abandoned water risk factors. The concept of critical abandonment probability was introduced, and a method for determining the critical abandonment probability of cascade reservoirs based on the joint minimum of warning false alarm rate and missed alarm rate, as well as a method for controlling the water level drop of cascade reservoirs at the end of the water supply period based on the critical abandonment probability, were proposed. On this basis, a mid- and long-term multi-objective optimal operation model considering the abandoned water risk in cascade reservoirs was constructed, and a case study was conducted on the Wujiang cascade reservoir group. The results show that there is a significant monotonic increasing relationship between the abandoned water probability and the abandoned water flow rate in the Wujiang cascade reservoir group. The two-stage scheme of coupling operation period and residual period has increased the power generation efficiency by about 0. 51% compared to the conventional optimized scheduling scheme, and the ecological efficiency has increased by about 1. 06 times.}
}