1、 IEC TR 62757 Edition 1.0 2015-07 TECHNICA L REPOR T Fire prev ention measures on conv erters for high-v oltage direct current(HV DC)sy stems,static v ar compensators(SV C)and flexible ac transmission systems(FACTS)and their v alv e halls IEC TR 62757:2015-07(en)Copyright International Electrotechni
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11、l Electrotechnical Commission IEC TR 62757 Edit ion 1.0 2015-07 TECHNICA L R EPOR T Fire prev ention measures on conv erters for high-v oltage direct current(HV DC)systems,static v ar compensators(SV C)and flexible ac transmission systems(FACTS)and their v alv e halls INTERNATIONAL ELECTROTECHNICAL
12、COMMISSION ICS 13.220.20 ISBN 978-2-8322-2788-6 R egist er ed tr ademar k of t he Int er national Electr ot echnical Commission Warning!Make sure that you obtained this publication from an authorized distributor.Copyright International Electrotechnical Commission 2 IEC TR 62757:2015 IEC 2015 CONTENT
13、S FOREWORD.5 1 Scope.7 2 Normative references.7 3 Terms and definitions.7 4 Fire hazards in valves and valve halls.13 4.1 General.13 4.2 Possible causes.13 4.2.1 Valve insulation failure.13 4.2.2 Loose connections or high resistance joints in the power circuit.13 4.2.3 Valve component failures.14 4.
14、2.4 Semiconductor device level connections.15 4.2.5 Coolant system problems.16 4.2.6 Failure of valve hall bushings.17 4.2.7 Failure of surge arresters.17 4.2.8 False operation of deluge system.17 4.2.9 Other valve hall equipment.17 4.2.10 Work in and around valve hall.17 4.3 Assessment of possible
15、consequences.18 5 Valve hall layout and access.18 5.1 Physical arrangements.18 5.1.1 General.18 5.1.2 Present practices.19 5.1.3 Specific provisions.19 5.2 HVDC valve hall construction.19 5.2.1 General.19 5.2.2 Valve hall construction.20 5.3 Means of egress.20 6 Supervision of valve components and o
16、ther valve hall equipment.20 6.1 General.20 6.2 Supervision of valve components.21 6.2.1 General.21 6.2.2 On-line monitoring.21 6.2.3 Off-line checks and inspection.22 6.3 Supervision of other valve hall equipment.22 7 Fire detection systems.23 7.1 General.23 7.2 Detection and operating principles.23 7.2.1 General.23 7.2.2 Air sampling systems.23 7.2.3 Infra-red beam smoke detectors.23 7.2.4 Arc detector systems.24 7.2.5 Infra-red flame detectors.24 7.2.6 Ultraviolet(UV)flame detectors.24 7.2.7
