1、BSI Standards Publication Fire prevention measures on converters for high-voltage direct current (HVDC) systems, static var compensators (SVC) and flexible ac transmission systems (FACTS) and their valve halls PD IEC/TR 62757:2015National foreword This Published Document is the UK implementation of
2、IEC/TR 62757:2015. The UK participation in its preparation was entrusted to Technical Committee PEL/22, Power electronics. A list of organizations represented on this committee can be obtained on request to its secretary. This publication does not purport to include all the necessary provisions of a
3、 contract. Users are responsible for its correct application. The British Standards Institution 2015. Published by BSI Standards Limited 2015 ISBN 978 0 580 82645 0 ICS 13.220.20 Compliance with a British Standard cannot confer immunity from legal obligations. This Published Document was published u
4、nder the authority of the Standards Policy and Strategy Committee on 31 August 2015. Amendments/corrigenda issued since publication Date Text affected PUBLISHED DOCUMENT PD IEC/TR 62757:2015IEC TR 62757:2015 IEC 2015 3 8.1 General . 24 8.2 Design considerations for an installed fire suppression syst
5、em . 25 8.3 Types of fire extinguishing agents . 26 8.3.1 List of agents . 26 8.3.2 Carbon dioxide 26 8.3.3 Inert gases 26 8.3.4 Hydro fluorocarbons 26 8.3.5 Other gases . 27 8.4 Installation requirements . 27 8.5 Guidelines for fire extinguishing agents . 27 9 Vent management . 28 9.1 General . 28
6、9.2 Design considerations . 29 9.2.1 General . 29 9.2.2 Natural ventilation 29 9.2.3 Forced ventilation 30 9.2.4 Design . 30 10 Control and integration of fire detection, fire protection and converter control systems . 30 10.1 General . 30 10.2 Fire alarm classification 31 10.2.1 General . 31 10.2.2
7、 Classification by detection principle . 32 10.2.3 Classification by detection objective 32 10.2.4 Detection system reliability 33 10.3 Fire control system . 33 10.3.1 General . 33 10.3.2 Basic system functions 33 10.3.3 Other system components . 34 10.3.4 Outline of system design . 34 10.4 Guidelin
8、es for integrated fire control systems 35 11 Fire fighting and maintenance 35 11.1 General . 35 11.2 Role of station and fire fighting personnel . 35 11.2.1 General . 35 11.2.2 Actions in case of a fire . 35 11.2.3 Fire fighting . 36 12 Guidance for purchaser specifications . 36 12.1 General . 36 12
9、.2 Purchaser specification . 36 12.2.1 General . 36 12.2.2 Semiconductor valves 37 12.2.3 Other valve hall equipment 38 12.2.4 Valve hall construction . 38 12.2.5 Fire detection systems . 38 12.2.6 Fire suppression systems 39 12.2.7 Vent management system 39 12.2.8 Fire alarm and control systems 39
10、Annexe A (informative) Valve hall fire hazards and survey of fire incidents 40 PD IEC/TR 62757:2015 4 IEC TR 62757:2015 IEC 2015 A.1 General . 40 A.2 Hazard categories . 40 A.3 Reports from HVDC users . 41 A.4 Reported incidents 42 A.4.1 Overheating of valve components due to reduced cooling 42 A.4.
11、2 Valve component failures . 44 A.4.3 Loose or high resistance connections in the load current carrying circuit . 57 A.4.4 Failure of auxiliary circuit electrical connections 58 A.4.5 Insulation failures 58 A.4.6 Failures of equipment associated with the valve hall 61 A.4.7 False alarms 62 A.4.8 Unk
12、nown causes . 63 A.5 Conclusion and recommendations . 63 Bibliography 65 Figure 1 Types of ventilation 29 Figure 2 Possible arrangements and interconnections of an integrated fire detection and control system 32 Table 1 Fire extinguishing agents 26 Table A.1 HVDC converters owners/suppliers referenc
13、e list (May 2012) 41 PD IEC/TR 62757:2015IEC TR 62757:2015 IEC 2015 5 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ FIRE PREVENTION MEASURES ON CONVERTERS FOR HIGH-VOLTAGE DIRECT CURRENT (HVDC) SYSTEMS, STATIC VAR COMPENSATORS (SVC) AND FLEXIBLE AC TRANSMISSION SYSTEMS (FACTS) AND THEIR VALVE HALLS FO
14、REWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international co-operation on all questions concerning standardization in the e
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23、tion, use of, or reliance upon, this IEC Publication or any other IEC Publications. 8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is indispensable for the correct application of this publication. 9) Attention is drawn to the possibili
24、ty that some of the elements of this IEC Publication may be the subject of patent rights. IEC shall not be held responsible for identifying any or all such patent rights. The main task of IEC technical committees is to prepare International Standards. However, a technical committee may propose the p
25、ublication of a technical report when it has collected data of a different kind from that which is normally published as an International Standard, for example “state of the art“. IEC/TR 62757, which is a technical report, has been prepared by subcommittee 22F: Power electronics for electrical trans
26、mission and distribution systems, of IEC technical committee 22: Power electronic systems and equipment. PD IEC/TR 62757:2015 6 IEC TR 62757:2015 IEC 2015 The text of this technical report is based on the following documents: Enquiry draft Report on voting 22F/347/DTR 22F/353A/RVC Full information o
27、n the voting for the approval of this technical report can be found in the report on voting indicated in the above table. This publication has been drafted in accordance with the ISO/IEC Directives, Part 2. The committee has decided that the contents of this publication will remain unchanged until t
28、he stability date indicated on the IEC website under “http:/webstore.iec.ch“ in the data related to the specific publication. At this date, the publication will be reconfirmed, withdrawn, replaced by a revised edition, or amended. PD IEC/TR 62757:2015IEC TR 62757:2015 IEC 2015 7 FIRE PREVENTION MEAS
29、URES ON CONVERTERS FOR HIGH-VOLTAGE DIRECT CURRENT (HVDC) SYSTEMS, STATIC VAR COMPENSATORS (SVC) AND FLEXIBLE AC TRANSMISSION SYSTEMS (FACTS) AND THEIR VALVE HALLS 1 Scope IEC TR 62757, which is a technical report, deals with fire prevention measures on converters and their valve halls for high volt
30、age direct current (HVDC) systems, static VAR compensators (SVC) and flexible AC transmission systems (FACTS). It is intended to be primarily for the use of the utilities and consultants who are responsible for issuing technical specifications for new converter valves and valve halls. It concerns fi
31、re incidents in HVDC projects using line commutated converters (LCC) or voltage sourced converter (VSC) technology and it is from these projects that most examples of fires and fire incidents are taken. This technical report also addresses converter valves and valve halls for SVC and FACTS. This tec
32、hnical report provides general recommendations to be considered while preparing specifications for these systems. Specific requirements for a particular project need to be clearly specified and mutually agreed upon between the supplier and the purchaser. 2 Normative references The following document
33、s, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. Void. 3 Terms and definitions
34、 For the purpose of this document the following terms and definitions apply. 3.1 alarm system installation for initiating a fire alarm 3.2 automatic fire detector device that detects abnormally high temperature, rate of temperature rise, visible or invisible particles, infra-red or visible radiation
35、, or gases produced by a fire 3.3 automatic fire extinguishing system any system designed and installed to detect a fire and subsequently discharge an extinguishing agent without the necessity of human intervention 3.4 burn, intransitive verb undergo combustion SOURCE: ISO 13943:2008, 4.28 PD IEC/TR
36、 62757:2015 8 IEC TR 62757:2015 IEC 2015 3.5 burn, transitive verb cause combustion SOURCE: ISO 13943:2008, 4.29 3.6 ignite, intransitive verb catch fire with or without the application of an external heat source SOURCE: ISO 13943:2008, 4.184 3.7 ignite, transitive verb initiate combustion SOURCE: I
37、SO 13943:2008, 4.185 3.8 char, noun carbonaceous residue resulting from pyrolysis or incomplete combustion SOURCE: ISO 13943:2008, 4.38 3.9 char, verb form char SOURCE: ISO 13943:2008, 4.39 3.10 combustion exothermic reaction of a substance with an oxidizing agent Note 1 to entry: Combustion general
38、ly emits fire effluent (4.105) accompanied by flames (4.133) and/or glowing (4.168). SOURCE: ISO 13943:2008, 4.46 3.11 exit designated point of departure from a building SOURCE: ISO 13943:2008, 4.86 3.12 explosion abrupt expansion of gas that can result from a rapid oxidation (see 4.245 of ISO 13943
39、:2008), decomposition reaction or other means, with or without an increase in temperature SOURCE: ISO 13943:2008, 4.87 3.13 extinguishing medium extinguishing agent solid, liquid or gaseous substance especially suited to the extinction of fires PD IEC/TR 62757:2015IEC TR 62757:2015 IEC 2015 9 3.14 f
40、ire process of combustion characterized by the emission of heat accompanied by smoke and/or flame 3.15 fire alarm alarm alarm signal for alerting the fire service or people endangered by fire 3.16 fire alarm box call box pull station part of a fire alarm system from which a fire call is made, either
41、 by hand or automatically 3.17 fire barrier fire separation separating element which provides, for a stated period of time, simultaneous integrity and thermal insulation under specified test conditions SOURCE: ISO 13943:2008, 4.99 3.18 fire control system system which provides integrated control of
42、fire detection, fire alarm, fire suppression, smoke management and other services as part of a total fire protection scheme 3.19 fire damper smoke damper mechanical plate or shutter which is closed to restrict the passage of fire/smoke in a flue or duct 3.20 fire department connection connection thr
43、ough which the fire department can pump supplemental water into the sprinkler system, standpipe, or other system furnishing water for fire extinguishment to supplement existing water supplies 3.21 fire door door of at least 30 min fire resistance which is prescribed for fire safety reasons and which
44、 has to be kept closed in accordance with the authorities instructions 3.22 fire hazard physical object or condition with a potential for an undesirable consequence from fire SOURCE: ISO 13943:2008, 4.112 3.23 fire load quantity of heat which can be released by the complete combustion of all the com
45、bustible materials in a volume, including the facings of all bounding surfaces SOURCE: ISO 13943:2008, 4.114, modified The notes have been deleted. PD IEC/TR 62757:2015 10 IEC TR 62757:2015 IEC 2015 3.24 fire suppression system any system provided for the extinguishing of a fire 3.25 fire wall parti
46、tion wall of specified fire resistance rating 3.26 fire-fighting all measures involved in the combat against fire 3.27 flame, noun rapid, self-sustaining, sub-sonic propagation of combustion in a gaseous medium, usually with emission of light SOURCE: ISO 13943:2008, 4.133 3.28 flame, verb produce fl
47、ame SOURCE: ISO 13943:2008, 4.134 3.29 flammable capable of flaming combustion (see 4.148 of ISO 13943:2008) under specified conditions SOURCE: ISO 13943:2008, 4.153 3.30 foam emulsive extinguishing agent, consisting of water, bubbles of gas or air, and a foam stabilizer (foam compound which is used
48、 to extinguish burning liquids) 3.31 heat release rate burning rate (deprecated) rate of burning (deprecated) rate of thermal energy production generated by combustion Note 1 to entry: The typical units are watts (W). SOURCE: ISO 13943:2008, 4.177 3.32 ignite, intransitive verb catch fire with or wi
49、thout the application of an external heat source SOURCE: ISO 13943:2008, 4.184 3.33 ignite, transitive verb initiate combustion, light SOURCE: ISO 13943:2008, 4.185 PD IEC/TR 62757:2015IEC TR 62757:2015 IEC 2015 11 3.34 ignition sustained ignition (deprecated) general: initiation of combustion SOURCE: ISO 13943:2008, 4.187 3.35 ignitability, ease of ignition measure of the ease with which a test specimen can be ignited, under specified conditions; ignition time, con
