HC Ladce TG2 Guaranty Measurements
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HC Ladce TG2 Guaranty Measurements
Division Control Systems
OSC, a. s.Staňkova 18a
Brno, Czech Republic
Petr Ševčík
OSC, a.s. – Highly qualified engineering and field services, incl. Hi-tech deliveries for Power Industry
Hydro Power Plants Field acceptance tests (hydraulic turbines, storage
pumps, pump-turbines) Hydraulic performance guarantees Steady state and transient tests Control systems improvement Diagnostics measurements
Power Plants for fossil fuel Operation assessment and optimization Control system performance evaluation, optimization
and final tuning Power Plant monitoring systems Process systems diagnostics
Nuclear Power Plants Turnkey delivery of full scope replica type simulators
and simulation systems Control system performance assessment,
enhancement, tuning and maintenance
Power Industry Dispatch type control systems for units and utilities Engineering services for units preparation to provide
ancillary services Expertise and consultation services Special electronics systems and devices Refurbishment and field services I&C systems
History of measurements/tests on HC Ladce
Year 1983 - TG1 and TG2 efficiency evaluation tests
Years 1988 –1990 - channel Doľné Kočkovce – Trenčín flow capacity and efficiency tests
HC Ladce guaranty data evaluation
Guaranty data
• GM commission, on-site evaluation, GM results protocol• GM test’s preparation, execution and guaranty
measurements design according IEC 41/1993• Evaluation provided by TS HYDRO (recently OSC)• Flow detection by Hydrometrics co.
Parameter Unit Original New
Runner diameter D [mm] 3250 3450 Nominal rotaion speed n [ot/min] 187,5 166,67 Head H = [m] 10,7 ÷ 15 10,7 ÷ 15 Design discharge Qmax [m
3/s] 75 90 Turbine output Pmax [MW] 7,5 9,15
Q
Z1L Z1R
Z2L Z2R dp Qi
Pw, U, I
yG
yR
Guaranty measurement following turbine recontruction
Flow detection – intake profile
measuring cart
see detail A
propeller carrier
measured distance
grooved stake with division 1 cm DETAIL A
SCHEME OF INTAKE PROFILE DIMENSION MEASUREMENT
Flow detection – intake profile
Flow detection – cable reels for flow detectors carts
Flow detection – data evaluation
2 x 9 points vertical profile integration
2 x horizontal profile
integration
Flow detection – Isotachs
Q = 40.404 m3/s Q = 38.714 m3/s
Q = 79.118 m3/s
Head detection
70
75
80
85
90
40 50 60 70 80 90 100
T [%]
Qisp [m3/s]
Original turbine efficiencyH = 12.5 m (measured y. 1983)
New turbine efficiencyH = 12.05 ÷ 12.84 m (guaranty tests y. 2001)
Guaranty value
GM results - efficiency
fP 0,74%fQ 1,79%
fH 0,20%
f 1,95%
Measurement uncertainties
GM results – link determination between guide vane and runner blades opening
72
74
76
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82
84
86
88
90
40 50 60 70 80 90 100
55
60
65
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85
90
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100
TG [%]
Qi [m3/s]
yG [%]
zone of optimal vicket gate opening for yR = 34 %
GM results – on came curve
0
10
20
30
40
50
60
70
80
90
100
50 60 70 80 90 100
yG [%]
y R [
%]
zone of optimal on cam regulation
original on cam curve
proposal of new on cam curve
Profit associated with optimalon cam curve
74
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90
40 50 60 70 80 90 100 110
55
60
65
70
75
80
85
90
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100
U [%]
Qi [m3/s]
yG [%]
turbine-generator unit efficiency with optimal on cam regulation
turbine-generator unit efficiency with original on cam regulation
Wicket gate opening
Contact address
OSC, a. s.Staňkova 18a612 00, Brno, Czech RepublicMr. Petr Ševčík, leading engineer for hydro powerMr. Miroslav Konečný, head of control systems divisionphone: (+420) 541 643 130fax: (+420) 541 643 109e-mail: osc@osc.cz www.osc.cz
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