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Proc. IAHS, 379, 119-123, 2018
https://doi.org/10.5194/piahs-379-119-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
Pre-conference publication
05 Jun 2018
Study on reservoir time-varying design flood of inflow based on Poisson process with time-dependent parameters
Jiqing Li, Jing Huang, and Jianchang Li North China Electric Power University, Beijing, 102206, China
Abstract. The time-varying design flood can make full use of the measured data, which can provide the reservoir with the basis of both flood control and operation scheduling. This paper adopts peak over threshold method for flood sampling in unit periods and Poisson process with time-dependent parameters model for simulation of reservoirs time-varying design flood. Considering the relationship between the model parameters and hypothesis, this paper presents the over-threshold intensity, the fitting degree of Poisson distribution and the design flood parameters are the time-varying design flood unit period and threshold discriminant basis, deduced Longyangxia reservoir time-varying design flood process at 9 kinds of design frequencies. The time-varying design flood of inflow is closer to the reservoir actual inflow conditions, which can be used to adjust the operating water level in flood season and make plans for resource utilization of flood in the basin.
Citation: Li, J., Huang, J., and Li, J.: Study on reservoir time-varying design flood of inflow based on Poisson process with time-dependent parameters, Proc. IAHS, 379, 119-123, https://doi.org/10.5194/piahs-379-119-2018, 2018.
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Short summary
The time-varying design flood is a dynamic design flood, which considers the shortage of water resources and followed the law of flood evolution in reservoir operation. Compared with the traditional design flood, time-varying design flood can make full use of the measured data, reflect the actual situation of the reservoir and so on. Using time-varying design flood to develop a reservoir operation plan not only ensures reservoir safety but also effectively improves water resource utilization.
The time-varying design flood is a dynamic design flood, which considers the shortage of water...
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