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Development of new technology to automatically draw up reservoir discharge plan to minimize damage caused by river flooding

Drawing up a discharge plan within 10 minutes that serves to avoid emergency discharge even in heavy rainfall that occurs once in 100 years, reduce downstream peak flow by up to about 80%, and prevent inundation

News Release Overview

Date

December 15, 2020

Title

Development of new technology to automatically draw up reservoir discharge plan to minimize damage caused by river flooding

Release Digest

Illustration of expected solutions that support drawing up reservoir discharge plan

Illustration of expected solutions that support drawing up reservoir discharge plan


Hitachi, Ltd. and Hitachi Power Solutions Co., Ltd. today announced the development of a new technology to automatically draw up a reservoir discharge plan that serves to establish measures for effectively minimizing river flooding damage caused by heavy rainfall. The technology, which uses a new numerical optimization method, automatically draws up a reservoir discharge plan that suppresses downstream river flow as much as possible. The plan is a combination of "pre-discharge" which lowers the water level of the reservoir prior to heavy rain and "multiple reservoir coordination" which shifts the timing of discharging and storing of water at multiple reservoirs. It also satisfies on-site rules such as the "principle of discharge" which restricts sudden changes of discharge volume.

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