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BS EN 50549-2:2019+A1:2023

BS EN 50549-2:2019+A1:2023

$215.11

Requirements for generating plants to be connected in parallel with distribution networks – Connection to a MV distribution network. Generating plants up to and including Type B

Published By Publication Date Number of Pages
BSI 2023 84
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PDF Catalog

PDF Pages PDF Title
2 undefined
9 1 Scope
10 2 Normative references
3 Terms and definitions
3.1 General
12 3.2 Plant, module and unit
14 3.3 Power
15 3.4 Voltage
17 3.5 Circuit theory
19 3.6 Protection
23 3.7 Control
25 4 Requirements on generating plants
4.1 General
26 4.2 Connection scheme
4.3 Choice of switchgear
4.3.1 General
4.3.2 Interface switch
27 4.4 Normal operating range
4.4.1 General
4.4.2 Operating frequency range
4.4.3 Minimal requirement for active power delivery at underfrequency
28 4.4.4 Continuous operating voltage range
4.5 Immunity to disturbances
4.5.1 General
29 4.5.2 Rate of change of frequency (ROCOF) immunity
4.5.3 Under-voltage ride through (UVRT)
4.5.3.1 General
30 4.5.3.2 Generating plant with non-synchronous generating technology
31 4.5.3.3 Generating plant with synchronous generating technology
4.5.4 Over-voltage ride through (OVRT)
32 4.6 Active response to frequency deviation
4.6.1 Power response to overfrequency
35 4.6.2 Power response to underfrequency
38 4.7 Power response to voltage changes
4.7.1 General
4.7.2 Voltage support by reactive power
4.7.2.1 General
4.7.2.2 Capabilities
40 4.7.2.3 Control modes
43 4.7.3 Voltage related active power reduction
4.7.4 Short circuit current requirements on generating plants
4.7.4.1 General
44 4.7.4.2 Generating plant with non-synchronous generating technology
48 4.7.4.3 Generating plant with synchronous generating technology – Synchronous generator based units
4.8 EMC and power quality
50 4.9 Interface protection
4.9.1 General
51 4.9.2 Voltage transformer
4.9.3 Requirements on voltage and frequency protection
4.9.3.1 General
52 4.9.3.2 Undervoltage protection [27]
4.9.3.3 Overvoltage protection [59]
53 4.9.3.4 Overvoltage 10 min mean protection
4.9.3.5 Underfrequency protection [81 < ]
4.9.3.6 Overfrequency protection [81 > ]
54 4.9.3.7 Positive sequence undervoltage protection [27D]
4.9.3.8 Negative sequence overvoltage protection [47]
4.9.3.9 Zero sequence overvoltage protection [59N]
4.9.4 Means to detect island situation
4.9.4.1 General
55 4.9.4.2 Active methods tested with a resonant circuit
4.9.4.3 Switch to narrow frequency band (see Annex E and Annex F)
4.9.5 Digital input to the interface protection
4.10 Connection and starting to generate electrical power
4.10.1 General
56 4.10.2 Automatic reconnection after tripping
4.10.3 Starting to generate electrical power
4.10.4 Synchronization
57 4.11 Ceasing and reduction of active power on set point
4.11.1 Ceasing active power
4.11.2 Reduction of active power on set point
4.12 Remote information exchange
58 Annex A (informative) Interconnection guidance
A.1 General
A.2 Network integration
59 A.3 Clusters of single-phase generating units
60 Annex B (informative)Remote information exchange
64 Annex C (informative) Parameter Table
69 Annex D (informative)List of national requirements applicable for generating plants
71 Annex E (informative)Loss of Mains and overall power system security
72 Annex F (informative)Examples of protection strategies
F.1 Introduction
F.1.1 General
F.1.2 Generalities
F.1.3 Detection of unwanted islands
73 F.1.4 Problems with uncontrolled islanding in MV networks
F.1.4.1 Safety
F.1.4.2 Grid parameters
F.1.4.3 Reclosing operations
F.1.4.4 Protection of islands against overcurrents
F.1.4.5 Protection against phase to earth faults
74 F.2 Example strategy 1
77 F.3 Example strategy 2
79 Annex G (normative)Abbreviations
80 Annex H (informative)Relationship between this European standard and the COMMISSION REGULATION (EU) 2016/631

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BS EN 50549-2:2019+A1:2023
$215.11