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BS EN IEC 60700-3:2022 2023

BS EN IEC 60700-3:2022 2023

$167.15

Thyristor valves for high voltage direct current (HVDC) power transmission – Essential ratings (limiting values) and characteristics

Published By Publication Date Number of Pages
BSI 2023 42
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This part of IEC 60700 specifies the service conditions, the definitions of essential ratings and characteristics of thyristor valves utilized in line commutated converters with three-phase bridge connections to realize the conversion from AC to DC and vice versa for high voltage direct current (HVDC) power transmission applications. It is applicable for air insulated, liquid cooled and indoor thyristor valves.

PDF Catalog

PDF Pages PDF Title
2 undefined
7 Annex ZA (normative)Normative references to international publicationswith their corresponding European publications
9 English
CONTENTS
12 FOREWORD
14 1 Scope
2 Normative references
3 Terms, definitions, symbols and abbreviated terms
3.1 Terms and definitions
15 3.2 Symbols and abbreviated terms
3.2.1 General
3.2.2 Subscripts
3.2.3 Letter symbols
16 3.2.4 Abbreviated terms
4 Service conditions
4.1 General
4.2 Environmental conditions
4.2.1 Site altitude
4.2.2 Air temperature and humidity range in valve halls
17 4.2.3 Cleanness in valve halls
4.2.4 Seismic conditions
4.3 System conditions
4.3.1 General information of the system
4.3.2 AC system voltage
4.3.3 AC system frequency
4.3.4 DC system voltage
18 4.3.5 DC system current and overload requirements
4.3.6 Short circuit current requirements for thyristor valves
4.3.7 Insulation coordination design related to thyristor valves
4.4 Technical parameters for six-pulse bridge design
4.4.1 General
4.4.2 Voltage parameters
19 4.4.3 Current parameters
20 4.4.4 Valve arrester parameters
4.4.5 Other system parameters
21 4.5 Other conditions
5 Ratings
5.1 Voltage and current ratings (limiting values)
5.1.1 Rated AC voltage across valve (Uv0N)
5.1.2 Maximum steady state AC voltage across valve (Uv0max)
5.1.3 Maximum temporary state AC voltage across valve (Uv0maxT)
22 5.1.4 Minimum steady state AC voltage across valve (Uv0min)
5.1.5 Minimum temporary state AC voltage across valve (Uv0minT)
5.1.6 Valve repetitive peak off-state voltage (UvDRM)
5.1.7 Valve non-repetitive peak off-state voltage (UvDSM)
5.1.8 Valve repetitive peak reverse voltage (UvRRM)
5.1.9 Valve non-repetitive peak reverse voltage (UvRSM)
5.1.10 Valve switching impulse withstand voltage (SIWVv)
23 5.1.11 Valve lightning impulse withstand voltage (LIWVv)
5.1.12 Valve steep front impulse withstand voltage (STIWVv)
5.1.13 Valve switching impulse protective firing voltage (SIPLPF)
5.1.14 Valve RMS current (Iv(RMS))
5.1.15 Valve average current (Iv(av))
5.1.16 Valve one-loop fault current with re-applied forward voltage (ISCα)
24 5.1.17 Valve multiple-loop fault current without re-applied forward voltage (ISCβ)
5.2 Delay and extinction angle ratings (limiting values)
5.2.1 Rated firing delay angle (αN)
5.2.2 Minimum allowable firing delay angle (αmin)
5.2.3 Maximum allowable firing delay angle (αmax)
5.2.4 Minimum temporary state firing delay angle (αminT)
5.2.5 Rated extinction angle (γN)
5.2.6 Minimum allowable extinction angle (γmin)
5.2.7 Maximum allowable extinction angle (γmax)
5.2.8 Minimum temporary state extinction angle (γminT)
25 5.3 Insulation and test voltage levels (limiting values)
5.3.1 Maximum DC voltage between valve terminals (Ud(v)max)
5.3.2 Maximum DC voltage across multiple valve unit (Ud(m)max)
5.3.3 Maximum DC voltage across valve support (Ud(vs)max)
5.3.4 Maximum AC voltage between valve terminals (Uac(v)max)
26 5.3.5 Maximum AC voltage across multiple valve unit (Uac(m)max)
5.3.6 Maximum AC voltage across valve support (Uac(vs)max)
5.3.7 Maximum switching impulse voltage between valve terminals (Us(v)max)
5.3.8 Maximum switching impulse voltage across multiple valve unit (Us(m)max)
27 5.3.9 Maximum switching impulse voltage across valve support (Us(vs)max)
5.3.10 Maximum lightning impulse voltage between valve terminals (Ul(v)max)
5.3.11 Maximum lightning impulse voltage across multiple valve unit (Ul(m)max)
5.3.12 Maximum lightning impulse voltage across valve support (Ul(vs)max)
5.3.13 Maximum steep front impulse voltage between valve terminals (Ust(v)max)
28 5.3.14 Maximum steep front impulse voltage across multiple valve unit (Ust(m)max)
5.3.15 Maximum steep front impulse voltage across valve support (Ust(vs)max)
6 Characteristics
6.1 General
6.2 Losses characteristics
6.2.1 General
6.2.2 Maximum load loss per valve at rated condition (Pvmax)
29 6.2.3 Maximum no-load loss per valve (Pv0max)
6.2.4 Maximum heat emission to valve hall (PEmax)
6.3 Protection characteristics
6.3.1 Valve lightning impulse protective firing voltage (LIPLPF)
6.3.2 Valve steep front impulse protective firing voltage (STIPLPF)
6.3.3 Thyristor protective firing level (VPF)
6.3.4 Thyristor forward recovery protection level (VRP)
6.3.5 Thyristor forward du/dt protection level (du/dtPF)
30 6.3.6 Valve protective firing trip level (NtripPF)
6.3.7 Valve loss of redundancy trip level (Ntrip)
6.4 Temperature characteristics
6.4.1 Maximum cooling medium temperature at valve inlet (T(in)max)
6.4.2 Maximum cooling medium temperature at valve outlet (T(out)max)
6.4.3 Thyristor junction temperature at rated condition (TjN)
6.4.4 Maximum thyristor junction temperature (Tjmax)
6.4.5 Storage temperature (Tstg)
6.5 Reliability characteristics
6.5.1 General
31 6.5.2 Expected annual failure rate of thyristor level (λE)
6.6 Other characteristics
6.6.1 Valve on-state voltage (Uv(on))
6.6.2 Maximum steady state operating time at α = 90° (t90max)
6.6.3 Maximum temporary state operating time at α = 90° (t90maxT)
6.6.4 Maximum steady state commutation overshoot factor (kc)
6.6.5 Maximum temporary state commutation overshoot factor (kcT)
32 Figures
Figure 1 – Typical arrester arrangement for converter units with two 12-pulse bridges in series
33 Figure 2 – Operating voltage of valve and valve arrester in rectified mode
Figure 3 – Thyristor valve voltage waveforms in different operation modes
34 Figure 4 – One loop valve short circuit current and voltage waveforms
Figure 5 – Multiple loop valve short circuit current and voltage waveforms
35 Figure 6 – Continuous operating voltages at various locations for a 12-pulse bridge in rectifier mode
36 Annex A (informative)Input parameters for thyristor valve design
Table A.1 – Main input parameters required for thyristor valve design
38 Annex B (informative)Technical data sheet of thyristor valves
Table B.1 – Technical data sheet of thyristor valves
41 Bibliography

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BS EN IEC 60700-3:2022 2023
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