Method and apparatus for monitoring a hydroelectric facility trash rack
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United States of America Patent
Stats
-
Sep 1, 1998
Grant Date -
N/A
app pub date -
Aug 19, 1996
filing date -
Aug 19, 1996
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A system is provided for monitoring fouling of a trash rack for a hydroelectric power generation facility. The trash rack monitoring system includes sensors for detecting head upstream and downstream of a trash rack as well as the flow through an inlet conduit downstream of the rack. The head and flow values are used to generate a trash rack loss coefficient that reflects actual losses across the trash rack independent of flow rate. A corresponding coefficient may be calculated when the rack is clean and used as a reference value for determining the additional loss across the rack due to fouling. The loss value may be converted to an economic loss value. The coefficient and economic loss values may be displayed on an operator interface and may serve as the basis for an alarm indicating the need to clean the rack or the potential for rack failure.
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