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IEC 62006:2010

(Main)

Hydraulic machines - Acceptance tests of small hydroelectric installations

Hydraulic machines - Acceptance tests of small hydroelectric installations

IEC 62006:2010 defines the test, the measuring methods and the contractual guarantee conditions for field acceptance tests of the generating machinery in small hydroelectric power installations. It applies to installations containing impulse or reaction turbines with unit power up to about 15 MW and reference diameter of about 3 m. The driven generator can be of synchronous or asynchronous type. This International Standard contains information about most of the tests required for acceptance of the hydraulic turbine such as safety approval tests, trial operating and reliability tests, as well for verification of cavitation, noise and vibration conditions, if required. This standard represents the typical methods used on smaller hydroelectric installations, and is divided into three classes as follows:
Class A: Default, normal test program (panel measurement), to determine the maximum output of the installation.
Class B: Recommended, extended test program, to determine the performance characteristics of the installation.
Class C: Optional, comprehensive test program, to determine the absolute efficiency of the installation.
All classes contain safety tests, trial operating tests, and reliability tests. This standard gives all necessary references for the contract in order to execute the test, evaluate, calculate and compare the result to the guarantee for all the classes A, B and C.

Machines hydrauliques - Essais de réception des petits aménagements hydroélectriques

La CEI 62006:2010 définit les essais, les méthodes de mesure et les conditions de garantie contractuelles relatifs aux essais de réception sur site des machines générant l'énergie dans les petits aménagements hydroélectriques. Elle s'applique aux installations comportant des turbines à impulsion ou à réaction d'une puissance allant jusqu'à 15 MW environ et d'un diamètre de référence de 3 m environ. Le générateur peut être de type synchrone ou asynchrone. La présente Norme internationale contient des informations relatives à la plupart des essais requis pour la réception des turbines hydrauliques tels que les essais pour approuver la sécurité, les essais de fonctionnement et de fiabilité, ainsi que les essais de vérification des conditions de cavitation, de bruit et de vibration, s'ils sont exigés. La présente norme présente les méthodes types utilisées pour les petits aménagements hydroélectriques, et se divise en trois classes, comme suit:
Classe A: Par défaut, programme d'essai normal (relevés sur le panneau de contrôle), pour déterminer la puissance maximale fournie par l'installation.
Classe B: Recommandé, programme d'essai étendu, pour déterminer les caractéristiques de l'aménagement en matière de performances.
Classe C: Optionnel, programme d'essai complet. Pour déterminer le rendement absolu de l'aménagement.
Toutes les classes comportent des essais de sécurité, des essais de fonctionnement et des essais de fiabilité. La présente norme fournit toutes les références nécessaires au contrat afin de réaliser l'essai, d'évaluer, de calculer et de comparer le résultat par rapport à la garantie pour toutes les classes: A, B et C.

General Information

Status
Published
Publication Date
27-Oct-2010
ICS
01 - GENERALITIES. TERMINOLOGY. STANDARDIZATION. DOCUMENTATION
27.140 - Hydraulic energy engineering
Technical Committee
TC 4 - Hydraulic turbines
Drafting Committee
WG 25 - TC 4/WG 25
Current Stage
PPUB - Publication issued
Start Date
15-Nov-2010
Completion Date
28-Oct-2010
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IEC 62006 ®
Edition 1.0 2010-10
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Hydraulic machines – Acceptance tests of small hydroelectric installations

Machines hydrauliques – Essais de réception des petits aménagements
hydroélectriques
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by
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IEC 62006 ®
Edition 1.0 2010-10
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Hydraulic machines – Acceptance tests of small hydroelectric installations

Machines hydrauliques – Essais de réception des petits aménagements
hydroélectriques
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
XE
CODE PRIX
ICS 27.140 ISBN 978-2-88912-228-8
– 2 – 62006 © IEC:2010
CONTENTS
FOREWORD.7
1 Scope.9
2 Normative references .9
3 Terms, definitions and schematic layout .10
3.1 Terms and definitions .10
3.2 Schematic layout of a hydroelectric installation .10
4 Nature and extent of guarantees.11
4.1 Grouping of classes A, B, C.11
4.1.1 General .11
4.1.2 Contract conditions.13
4.2 Scope of performance guarantee.13
4.2.1 General .13
4.2.2 Class A: Maximum power output.13
4.2.3 Class B: Index test .13
4.2.4 Class C: Turbine efficiency .13
4.2.5 Interpretation of losses .13
4.3 Scope of tests .14
4.3.1 Safety tests .14
4.3.2 Trial run and reliability tests.14
4.3.3 Performance test .14
4.4 Aptitude.15
4.5 Warranty .15
5 Safety tests (commissioning) .16
5.1 Pre-start tests .16
5.2 Closing devices .16
5.2.1 General .16
5.2.2 Intake gate or valve .17
5.2.3 Turbine inlet valve .17
5.2.4 Guide vanes (Francis and Kaplan turbines) .17
5.2.5 Needle valve and deflector (Pelton and Turgo turbines).18
5.3 First run operation and control.19
5.4 Bearing run at rated speed .19
5.5 Emergency shutdown (no load) .20
5.6 Electrical protection.20
5.7 Overspeed test.21
5.8 Runaway test .21
5.9 Overpressure, emergency trip and load rejection tests .22
5.9.1 General conditions .22
5.9.2 Testing the guide vanes or needle valves .23
5.9.3 Testing the turbine inlet valve.23
5.9.4 Testing the pressure relief valve.23
5.9.5 Pressure rise .23
5.10 Measured quantities .25
5.10.1 Pressure.25
5.10.2 Speed.25
5.10.3 Control components.25

62006 © IEC:2010 – 3 –
6 Trial operating and reliability tests (commissioning).25
6.1 General .25
6.2 Temperature stability of rotating parts .25
6.2.1 General .25
6.2.2 Temperature guarantees .26
6.3 Speed controller system .26
6.3.1 General .26
6.3.2 Unit operating without regulation .26
6.3.3 Unit operating with a speed governor.27
6.3.4 Unit operating with a voltage governor.28
6.3.5 Unit operating with a controller .28
6.3.6 Measurements when testing the control system .28
6.4 Control of cam correlation .29
7 Performance guarantees and tests .29
7.1 General .29
7.2 Maximum generator (transformer) power output as a function of net head .30
7.2.1 Guarantee .30
7.2.2 Instrumentation.30
7.3 Index test .30
7.3.1 General .30
7.3.2 Index discharge measurement .31
7.3.3 Shape control .31
7.3.4 Index plant efficiency.32
7.3.5 Optimizing cam correlation .33
7.4 Turbine efficiency.33
7.4.1 Efficiency test by absolute discharge measurement.33
7.4.2 Efficiency test by thermodynamic method .34
7.5 Correcting the efficiency using the model curve.34
8 Computation of results and comparison to the guarantee.36
8.1 General .36
8.1.1 Site data.36
8.1.2 Measured values (readings) .36
8.1.3 Scale effect due to water temperature .37
8.1.4 Shifting of the plant characteristic.37
8.2 Power output .37
8.2.1 Plant power output measurement .
...

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