The development of a real-time flooding operation model in the Tseng-Wen Reservoir

Yu Wen Chen, Jui Pin Tsai, Liang-Jeng Chang*, Chih Chao Ho, You Cheng Chen

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

Typhoon events occur frequently in Taiwan resulting in flood-related disasters. A well-operated reservoir can reduce the severity of a disaster. This study incorporates a genetic algorithm, a river hydraulic model, an artificial neural network and a simulation model of Tseng-Wen Reservoir to propose a real-time flooding operation model. The model includes two parts: an optimal flooding operation model (OFOM) and a reservoir inflow forecasting. Given an inflow condition, the OFOM is run based on the safety of the dam structure, reservoir flooding operation rule, and minimization of the downstream loss due to flood. A simple and robust model for reservoir inflow forecasting, which automatically chooses the most similar event from a typhoon event database as the future inflow, is developed. This study compares the model results with the real operations during Typhoons Sepat, Krosa, Kalmaegi, Fung-wong, Sinlaku, and Jangmi. This study compares the performances of the proposed model with the practical operation operated by the management center of Tseng-Wen Reservoir. The proposed model indicates shorter flooding duration in the downstream area. For example, the flood durations of the model output are 4 and 3 hours shorter during Typhoon Krosa and Sinlaku, respectively, than the practical operations.

Original languageEnglish
Pages (from-to)490-503
Number of pages14
JournalHydrology Research
Volume45
Issue number3
DOIs
StatePublished - 1 Jan 2014

Keywords

  • Artificial neural network
  • Historical typhoon event database
  • Hydrologic Engineering Centers River Analysis System (HECRAS)
  • Real-time reservoir flooding operation model

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