oSIST prEN IEC 61116:2024

SLOVENSKI STANDARD
01-december-2024
Vodilo za elektromehansko opremo malih hidroelektrarn
Electromechanical equipment guide for small hydroelectric installations
Anleitung für die elektromechanische Ausrüstung von kleinen Wasserkraftanlagen
Guide pour l'équipement électromécanique des petits aménagements hydro-électriques
Ta slovenski standard je istoveten z: prEN IEC 61116:2024
ICS:
27.140 Vodna energija Hydraulic energy engineering
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

4/510/CDV
COMMITTEE DRAFT FOR VOTE (CDV)
PROJECT NUMBER:
IEC 61116 ED2
DATE OF CIRCULATION: CLOSING DATE FOR VOTING:
2024-09-27 2024-12-20
SUPERSEDES DOCUMENTS:
4/492/CD, 4/501A/CC
IEC TC 4 : HYDRAULIC TURBINES
SECRETARIAT: SECRETARY:
Canada Mrs Christine Geraghty
OF INTEREST TO THE FOLLOWING COMMITTEES: HORIZONTAL FUNCTION(S):

ASPECTS CONCERNED:
SUBMITTED FOR CENELEC PARALLEL VOTING NOT SUBMITTED FOR CENELEC PARALLEL VOTING
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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
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This document is still under study and subject to change. It should not be used for reference purposes.
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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:
Electromechanical equipment guide for small hydroelectric installations

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
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IEC CDV 61116 © IEC 2024 2 4/510/CDV

1 CONTENTS
2 FOREWORD . 4
3 1 Scope . 6
4 2 Normative references. 6
5 3 Terms, definitions, symbols and units . 7
6 3.1 General . 7
7 3.2 General terminology . 7
8 3.3 Units . 9
9 4 Methodology . 10
10 5 Description of installation and operating conditions of power station . 12
11 5.1 Site conditions . 12
12 5.2 Hydraulic conditions for plant and design criteria for the units . 17
13 5.3 Electrical conditions for plant operation . 19
14 5.3.1 The plant is intended to operate in an isolated grid . 19
15 5.3.2 The plant is intended to operate in parallel with a grid which imposes
16 the frequency . 20
17 5.3.3 Energy transport and distribution . 20
18 5.4 Types of regulation and modes of operation . 20
19 5.4.1 Frequency regulation . 20
20 5.4.2 Power regulation . 21
21 5.4.3 Level control . 21
22 5.4.4 Flow regulation . 21
23 5.4.5 Simplified governing . 21
24 5.5 Automation, telemetry, remote control, alarms . 21
25 6 Equipment specifications . 21
26 6.1 Technical requirements . 21
27 6.2 Limits of the supply . 22
28 6.2.1 For the hydraulic system . 22
29 6.2.2 For the electric system . 22
30 6.2.3 For the auxiliary equipment system . 22
31 6.2.4 Elements not normally included in the supply . 22
32 6.3 Specifications of the elements of the plant . 22
33 6.3.1 Trashrack and rack cleaner . 22
34 6.3.2 Water-level control . 22
35 6.3.3 Discharge closure devices (see Figure 5) . 23
36 6.3.4 Penstock . 25
37 6.3.5 Turbine (see Figure 6) . 25
38 6.3.6 Generator . 29
39 6.3.7 Automatic control system . 31
40 6.3.8 Main transformers (reference can be made to IEC 60076) . 34
41 6.3.9 Auxiliary equipment . 35
42 6.3.10 Spare parts and special tools . 36
43 6.3.11 Mechanical handling . 36
44 6.3.12 Corrosion protection . 37
45 6.4 Guarantees . 37
46 6.4.1 General . 37
47 6.4.2 Discharge closure devices . 38
48 6.4.3 Turbine . 38
49 6.4.4 Generator . 38
50 6.4.5 Governor . 38

IEC CDV 61116 © IEC 2024 3 4/510/CDV

51 6.4.6 Speed increaser. 39
52 6.4.7 Excitation equipment . 39
53 6.4.8 Comments concerning the complete generating set . 39
54 6.4.9 Main transformer . 39
55 6.5 General conditions for tender enquiries and comparison of tenders . 40
56 6.5.1 Instructions to tenderers . 40
57 6.5.2 General conditions of contract . 40
58 6.5.3 Technical comparison of tenders . 40
59 7 Inspection, delivery, operation and maintenance . 42
60 7.1 Approval of the design and inspection of the work . 42
61 7.1.1 Approval of design documents . 42
62 7.1.2 Inspection of materials and sub-assemblies . 42
63 7.1.3 Inspection at manufacturer's works . 43
64 7.1.4 Delivery . 43
65 7.1.5 Assembly at site . 43
66 7.2 Commissioning. 44
67 7.2.1 Preliminary checks before watering-up . 44
68 7.2.2 Watering-up . 44
69 7.2.3 Unit rotation . 45
70 7.2.4 Preliminary checks and electrical load tests . 45
71 7.3 Operation . 46
72 7.3.1 Probationary period . 46
73 7.3.2 Guarantee period . 46
74 7.3.3 Normal operation . 48
75 7.4 Training of personnel . 48
76 7.5 Checking and maintenance . 48
77 Bibliography . 51
79 Figure 1 – Example of sequence of events . 11
80 Figure 2 – Power station arrangements . 15
81 Figure 3 – Run-of-river power station arrangements . 17
82 Figure 4 – Flow duration curve (showing river flow and plant flow) . 18
83 Figure 5 – Hydraulic closure devices (examples) . 24
84 Figure 6 – Schematic representation of a hydraulic machine . 26
85 Figure 7 – Electrical single-line diagram . 34
87 Table 1 – Energy utilization for passive and active loads . 20
88 Table 2 - Elements of bid evaluation . 41
89 Table 3 - Examples of checks during normal operation . 50
IEC CDV 61116 © IEC 2024 4 4/510/CDV
91 INTERNATIONAL ELECTROTECHNICAL COMMISSION
92 ____________
94 ELECTROMECHANICAL EQUIPMENT GUIDANCE FOR
95 SMALL HYDROELECTRIC INSTALLATIONS
97 FOREWORD
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