CONFERENCE PROCEEDINGS
8th INTERNATIONAL CONFERENCE
CONTEMPORARY ACHIEVEMENTS IN CIVIL ENGINEERING 2021 , 2021.y., pp. 445-454
NOVEL DISCHARGE MEASUREMENT SYSTEM AT THE TURBINE INTAKES OF IRON GATE 2 HYDROPOWER PLANT: A SYSTEM DESCRIPTION |
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DOI: 10.14415/konferencijaGFS2021.43 |
UDC: 532.572 |
CC-BY-SA 4.0 license |
Author : Ivetić, Damjan; Prodanović, Dušan; Vojt, Predrag |
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| Summary: |
| To quantify the hydraulic performance characteristics of hydraulic turbines
several basic quantities need to be accurately determined. Discharge, or flow rate, is the
most difficult quantity to measure as the measurement uncertainty is higher and more
difficult to estimate in comparison to the power and head. Design of a discharge
measurement system is governed by both the geometric and flow conditions at the
measurement site, as well as by the physical properties of the fluid. Moreover, in adverse
or non-standard flow conditions, special care must be taken to allow for the measurement
system to capture the discharge data with acceptably low measurement uncertainty. In
this paper, a general description of a novel discharge measurement system, designed and
installed at the Iron Gate 2 hydropower plant, is provided. The system can be installed at
the turbine intake, upstream of the trash rack, on one turbine at the time. Discharge value
is acquired by employing a Velocity-Area aproach. Robust steel frame, carrying 15 novel
3D electromagnetic velocity probes, along with the 2 acoustic doppler velocimeters, is
traversed along the cross sectional flow area allowing for accurate velocity field mapping.
Position of the traversing frame is determined with two position transducers while two
pressure transducers are used for the water level measurements. The measurement system
was used at two turbines at the Iron Gate 2 HPP, capturing discharge with low
measurement uncertainties. |
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| Keywords: |
| Discharge/Flow measurements, Measurement system, Hydropower plant, Electromagnetic probes |
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