SIST EN IEC 60308:2024

Hydraulic turbines - Testing of governing systems (IEC 60308:2024)

IEC 60308:2024 deals with the definition and the characteristics of control systems. It is not limited to the actual controller tasks but also includes other tasks which may be assigned to a control system, such as sequence control tasks, safety and provision for the actuating energy. The following systems are included, speed, power, opening, water level and flow control for all turbine types; electronic, electrical and fluid power devices; safety devices as well as start-up and shutdown devices. The significant technical changes introduced by the third edition are the adoption of parts of IEC 61362:2024 which deal with test matters and the introduction of new technical aspects.

Wasserturbinen - Prüfung von Regelsystemen (IEC 60308:2024)

Turbines hydrauliques - Essais des systèmes de régulation (IEC 60308:2024)

IEC 60308:2024 traite de la définition et des caractéristiques des systèmes de régulation. Elle n'est pas limitée aux tâches effectives de régulation, mais inclut également d'autres tâches qui peuvent être assignées à un système de régulation, telles que les tâches de commande séquentielle, de sécurité, d'alimentation en énergie de manœuvre. La présente norme couvre les systèmes suivants : régulation de vitesse, puissance, ouverture, niveau d'eau et débit de tous types de turbines; dispositifs électroniques, électriques et d'alimentation en fluide; dispositifs de sécurité; dispositifs de démarrage, et dispositifs d'arrêt. Les changements significatifs introduits dans l’édition 3 sont l’adoption de parties de IEC 61362:2024 concernant les aspects de test et l’introduction plus générale de nouveaux aspects techniques.

Hidravlične turbine - Preskušanje krmilnih sistemov (IEC 60308:2024)

General Information

• Status: Not Published
• Public Enquiry End Date: 07-Sep-2023
• ICS: 27.140 - Hydraulic energy engineering
• Technical Committee: IEHT - Electrotechnics - Hydraulic turbins
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 06-Nov-2024
• Due Date: 11-Jan-2025
• Ref Project: EN IEC 60308:2024 - Hydraulic turbines - Testing of governing systems

Relations

• Revises: SIST EN 60308:2005 - Hydraulic turbines - Testing of control systems
• Effective Date: 18-Apr-2023

Standards Content (Sample)

SLOVENSKI STANDARD
oSIST prEN IEC 60308:2023
01-september-2023
Hidravlične turbine - Preskušanje krmilnih sistemov
Hydraulic turbines - Testing of governing systems
Ta slovenski standard je istoveten z: prEN IEC 60308:2023
ICS:
27.140 Vodna energija Hydraulic energy engineering
oSIST prEN IEC 60308:2023 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

oSIST prEN IEC 60308:2023
oSIST prEN IEC 60308:2023
4/470/CDV
COMMITTEE DRAFT FOR VOTE (CDV)

PROJECT NUMBER:
IEC 60308 ED3
DATE OF CIRCULATION: CLOSING DATE FOR VOTING:
2023-06-16 2023-09-08
SUPERSEDES DOCUMENTS:
4/428/CD, 4/467/CC
IEC TC 4 : HYDRAULIC TURBINES
SECRETARIAT: SECRETARY:
Canada Mrs Christine Geraghty
OF INTEREST TO THE FOLLOWING COMMITTEES: PROPOSED HORIZONTAL STANDARD:

Other TC/SCs are requested to indicate their interest, if
any, in this CDV to the secretary.
FUNCTIONS CONCERNED:
EMC ENVIRONMENT QUALITY ASSURANCE SAFETY
SUBMITTED FOR CENELEC PARALLEL VOTING NOT SUBMITTED FOR CENELEC PARALLEL VOTING
Attention IEC-CENELEC parallel voting
The attention of IEC National Committees, members of
CENELEC, is drawn to the fact that this Committee Draft
for Vote (CDV) is submitted for parallel voting.
The CENELEC members are invited to vote through the
CENELEC online voting system.
This document is still under study and subject to change. It should not be used for reference purposes.
Recipients of this document are invited to submit, with their comments, notification of any relevant patent rights of
which they are aware and to provide supporting documentation.
Recipients of this document are invited to submit, with their comments, notification of any relevant “In Some
Countries” clauses to be included should this proposal proceed. Recipients are reminded that the CDV stage is
the final stage for submitting ISC clauses. (SEE AC/22/2007 OR NEW GUIDANCE DOC).

TITLE:
Hydraulic turbines - Testing of governing systems

PROPOSED STABILITY DATE: 2026
NOTE FROM TC/SC OFFICERS:
download this electronic file, to make a copy and to print out the content for the sole purpose of preparing National
Committee positions. You may not copy or "mirror" the file or printed version of the document, or any part of it,
for any other purpose without permission in writing from IEC.

oSIST prEN IEC 60308:2023
IEC CDV 60308/Ed3 © IEC 2023 2 4/470/CDV

1 CONTENTS
3 FOREWORD . 6
4 INTRODUCTION . 8
5 1 Scope . 9
6 2 Normative references . 9
7 3 Terms and definitions . 9
8 4 Recommendations on tests . 10
9 4.1 General . 10
10 4.2 Recommendations on workshop tests . 10
11 4.3 Recommendations on field tests . 11
12 4.3.1 New governing systems . 11
13 4.3.2 Existing governing systems . 11
14 5 Governing system tests . 12
15 5.1 Test conditions to be fulfilled . 12
16 5.1.1 General . 12
17 5.1.2 Turbine operation conditions . 12
18 5.1.3 Hydraulic pressure unit condition . 13
19 5.1.4 Deviation of values from specified operating conditions. 13
20 5.1.5 Provisions for instruments . 13
21 5.1.6 Calibration of instruments . 13
22 5.2 Electrical checks . 14
23 5.2.1 General . 14
24 5.2.2 Selection of test center . 14
25 5.2.3 Power supply . 14
26 5.2.4 Overvoltage protection and suppression of interference voltage . 14
27 5.3 Test of the process interface system . 15
28 5.4 Test of converters, amplifiers and actuators . 15
29 5.4.1 Electrohydraulic and electromechanical converters . 15
30 5.4.2 Servomotors . 20
31 5.4.3 Dead time, insensitivity . 20
32 5.4.4 Provision of actuating energy . 21
33 5.4.5 Oil leakage . 22
34 5.4.6 Test of the positioning loop . 22
35 5.5 Tests of governor characteristics . 22
36 5.5.1 General . 22
37 5.5.2 Test of the governing system . 22
38 5.5.3 Determination of governing system’s parameters . 23
39 5.5.4 Test of main control loops . 25
40 5.5.5 Considerations for Island grid field tests . 27
41 5.6 Servomotor pressure indication test . 30
42 5.7 Safety tests . 30
43 5.7.1 General . 30
44 5.7.2 Test strategy . 31
45 5.7.3 Test plan . 31

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46 Inaccuracies in tests of governing systems . 32
47 7 Simulation of governing and control operations . 34
48 8 Organizational aspects of test management . 34
49 Annex A (informative) Test procedures . 36
50 A.1 Insensitivity test procedure . 36
51 A.2 Dead time test procedure . 36
52 A.3 Test procedure for the servomotor pressure indication . 37
53 A.4 Procedure for the measurement of the pressure and flow characteristics of
54 control valves . 37
55 Annex B (informative) Recommendation for testing of turbine governing systems . 39
56 B.1 General . 39
57 B.1.1 Workshop tests . 40
58 B.2 Level II – Units for base load operation . 44
59 B.2.1 Workshop tests . 44
60 Field tests 46
61 B.3 Level III – Other units without special requirements . 48
62 B.3.1 Workshop tests . 48
63 B.3.2 Field tests . 49
64 Annex C (informative) Field test of governing systems . 50
65 C.1 Data on operating conditions . 50
66 C.2 Pre-start tests prior to filling waterways . 50
67 C.3 Test after filling waterways . 51
68 C.4 Initial run . 51
69 C.5 No-load tests . 51
70 C.6 Load and load rejection tests . 51
71 C.7 Measurement and recordings . 51
72 Annex D (informative) Governing system test examples . 53
73 D.1 Insensitivity test under speed control with X-Y recording (example referring
74 to 5.5.3.3.2 and Annex A 1b) . 53
75 D.2 Insensitivity test under opening control with frequency-opening-droop and
76 time characteristics (example referring to 5.5.3.3.3 and Annex A 1a) . 55
77 D.3 Insensitivity test under power control with time characteristics (example
78 referring to 5.5.3.3.3 and Annex A 1a) . 57
79 D.4 Synchronism test of 2 controlled quantities with X-Y recording (example
80 referring to 5.5.3.4) . 59
81 D.5 Measurement of a unit step response with PID speed controller (example
82 referring 5.5.4.2 and 5.5.3.1) . 61
83 D.6 Measurement of a unit step response with speed control for determination of
84 PID controller parameters (example referring to 5.5.4.2; 5.5.3.1) . 63
85 D.7 Measurement of a unit step response with speed control for determination of
86 PID controller parameters (example referring to 5.5.4.2; 5.5.5) . 65
87 D.8 Measurement of a unit step response in island operation (example referring
88 to 5.5.5.3) . 67
89 D.9 Measurement of unit step responses with power control (example referring
90 to 5.5.4.3 and 5.5.4.6) . 69
91 D.10 Measurement of unit step responses with power control (example referring
92 to 5.5.4.3 and 5.5.4.6) . 71
93 D.11 Measurement of a unit step response with power control for determination of
94 PI-controller parameters (example referring to 5.5.4.3) . 73

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95 Measurement of a unit step response with headwater level control (example
D.12
96 referring to 5.5.4.4) . 75
97 D.13 Measurement of the unit step responses with headwater level control, in
98 multi-unit operations (example referring to 5.5.4.4) . 77
99 D.14 Measurement of a load rejection with transition into no-load operation
100 (example referring to 5.5.4.2) . 79
101 D.15 Measurement of a load rejection with limit control of surge and suction
102 waves and with transition into no-load operation (example referring to
103 5.5.4.2) . 81
104 D.16 Measurement of a start-up process and loading (example referring to 5.5.4) . 83
105 D.17 Measurement of changeover from full turbine load to synchronous condenser
106 operation (example referring to 5.5.4) . 85
107 D.18  Measurement of a power step-response in on-line simulated island operation
108 test (example referring to 5.5.4, 5.5.5) . 87
109 Bibliography . 89
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