GB/T 31487.3-2015 Direct current de-icing devices—Part 3: Tests
1 Scope
This part of GB/T 31487 specifies the basic requirements for type test, routine test, field test, periodic inspection and equivalent test of direct current de-icing devices.
This part is applicable to DC de-icing devices based on thyristors for AC transmission lines of 500 kV and below. It may also serve as a reference for DC de-icing devices based on other voltage levels and other power components.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB 1094.1-2013 Power transformers - Part 1: General
GB/T 1094.6-2011 Power transformers - Part 6: Reactors
GB/T 1094.10 Power transformers - Part 10: Determination of sound levels
GB 1985-2014 High-voltage alternating-current disconnectors and earthing switches
GB/T 3859.1-2013 Semiconductor converters - General requirements and line commutated converters - Part 1-1: Specification of basic requirements
GB/T 7261-2008 Basic testing method for relaying protection and security automatic equipment
GB/T 11022-2011 Common specifications for high-voltage switchgear and controlgear standards
GB/T 11024.1-2010 Shunt capacitors for a.c. power systems having a rated voltage above 1000V - Part 1: General
GB/T 17623 Determination of componental contents of gases dissolved in insulating oil by gas chromatography method
GB/T 18494.2-2007 Convertor transformers - Part 2: Transformers for HVDC applications
GB/T 20297 Static var compensator field tests
GB/T 20840.8-2007 Instrument transformers - Part 8: Electronic current transformers
GB/T 20990.1-2007 Thyristor valves for high voltage direct current (HVDC) power transmission - Part 1: Electrical testing
GB/T 26216.1-2010 direct current measuring device for HVDC transmission system - Part 1: Electronic DC current measuring device
GB/T 26217-2010 DC voltage measuring device for HVDC transmission system
GB/T 29629-2013 Water cooling equipment for static var compensators
GB 50150-2006 Electric equipment installation engineering - Standard for hand-over test of electric equipment
GB 50171 Code for construction and acceptance of switchboard outfit complete cubicle and secondary circuit electric equipment installation engineering
GB/T 31487.1-2015 Direct current de-icing devices - Part 1: System design and application guide
3 Terms and definitions
For the purposes of this document, the terms and definitions given in GB/T 31487.1-2015 and the following apply. For the convenience of application, some terms and definitions specified in GB/T 31487.1-2015 are listed below.
3.1
DC de-icing
eliminating line icing by applying direct current to the conducting wire or ground wire of the icing transmission line based on the heating effect of the current
[GB/T 31487.1-2015, Definition 3.1]
3.2
DC de-icing device
device that provides a stable and adjustable direct current for the iced transmission line and heats the line for de-icing
[GB/T 31487.1-2015, Definition 3.2]
3.3
DC de-icing system
system composed of DC de-icing device, power distribution device and de-icing line
[GB/T 31487.1-2015, Definition 3.3]
3.4
sub-system
relatively independent components that make up the DC de-icing device, such as thyristor valves, cooling, filtering, control, protection, etc.
[GB/T 31487.1-2015, Definition 3.4]
3.5
“one phase to one phase” de-icing mode
de-icing connection mode in which two-phase conducting wires are connected in series to form direct current circuit
Note: It is also known as “1-1” de-icing mode
[GB/T 31487.1-2015, Definition 3.5]
3.6
“one phase to two phase” de-icing mode
de-icing connection mode in which two-phase conducting wires are connected in parallel and then connected in series with the third phase conductor to form direct current circuit
Note: It is also known as “1-2” de-icing mode
[GB/T 31487.1-2015, Definition 3.6]
3.7
minimum de-icing current
critical current for de-icing on the conducting wire, overhead ground wire or OPGW within a certain time, which is related to environmental conditions (temperature, wind speed, humidity), icing thickness, de-icing time, etc.
[GB/T 31487.1-2015, Definition 3.7]
3.8
maximum de-icing current
maximum allowable current in the de-icing circuit for the purpose of ensuring the safety of equipment in the de-icing circuit, which is related to environmental conditions (temperature, wind speed, humidity), icing conditions, de-icing time, etc.
[GB/T 31487.1-2015, Definition 3.8]
Foreword i 1 Scope 2 Normative references 3 Terms and definitions 4 Type test and routine test 4.1 Thyristor valve 4.2 Water cooling equipment 4.3 Converter transformer 4.4 DC voltage measuring device 4.5 Direct current measuring device 4.6 Control and protection system 4.7 Reactor 4.8 Capacitor 4.9 Breaker 4.10 Isolating (grounding) switch 4.11 Other equipment 4.12 Thyristor valve low voltage power-on test (optional) 5 Field test 5.1 Equipment test 5.2 Sub-system test 5.3 System commissioning 6 Periodic test and de-icing simulation test 6.1 Periodic test 6.2 DC de-icing simulation test
Standard
GB/T 31487.3-2015 Direct current de-icing devices―Part 3:Tests (English Version)
GB/T 31487.3-2015 Direct current de-icing devices—Part 3: Tests
1 Scope
This part of GB/T 31487 specifies the basic requirements for type test, routine test, field test, periodic inspection and equivalent test of direct current de-icing devices.
This part is applicable to DC de-icing devices based on thyristors for AC transmission lines of 500 kV and below. It may also serve as a reference for DC de-icing devices based on other voltage levels and other power components.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB 1094.1-2013 Power transformers - Part 1: General
GB/T 1094.6-2011 Power transformers - Part 6: Reactors
GB/T 1094.10 Power transformers - Part 10: Determination of sound levels
GB 1984-2014 High-voltage alternating-current circuit-breakers
GB 1985-2014 High-voltage alternating-current disconnectors and earthing switches
GB/T 3859.1-2013 Semiconductor converters - General requirements and line commutated converters - Part 1-1: Specification of basic requirements
GB/T 7261-2008 Basic testing method for relaying protection and security automatic equipment
GB/T 11022-2011 Common specifications for high-voltage switchgear and controlgear standards
GB/T 11024.1-2010 Shunt capacitors for a.c. power systems having a rated voltage above 1000V - Part 1: General
GB/T 17623 Determination of componental contents of gases dissolved in insulating oil by gas chromatography method
GB/T 18494.2-2007 Convertor transformers - Part 2: Transformers for HVDC applications
GB/T 20297 Static var compensator field tests
GB/T 20840.8-2007 Instrument transformers - Part 8: Electronic current transformers
GB/T 20990.1-2007 Thyristor valves for high voltage direct current (HVDC) power transmission - Part 1: Electrical testing
GB/T 26216.1-2010 direct current measuring device for HVDC transmission system - Part 1: Electronic DC current measuring device
GB/T 26217-2010 DC voltage measuring device for HVDC transmission system
GB/T 29629-2013 Water cooling equipment for static var compensators
GB 50150-2006 Electric equipment installation engineering - Standard for hand-over test of electric equipment
GB 50171 Code for construction and acceptance of switchboard outfit complete cubicle and secondary circuit electric equipment installation engineering
GB/T 31487.1-2015 Direct current de-icing devices - Part 1: System design and application guide
3 Terms and definitions
For the purposes of this document, the terms and definitions given in GB/T 31487.1-2015 and the following apply. For the convenience of application, some terms and definitions specified in GB/T 31487.1-2015 are listed below.
3.1
DC de-icing
eliminating line icing by applying direct current to the conducting wire or ground wire of the icing transmission line based on the heating effect of the current
[GB/T 31487.1-2015, Definition 3.1]
3.2
DC de-icing device
device that provides a stable and adjustable direct current for the iced transmission line and heats the line for de-icing
[GB/T 31487.1-2015, Definition 3.2]
3.3
DC de-icing system
system composed of DC de-icing device, power distribution device and de-icing line
[GB/T 31487.1-2015, Definition 3.3]
3.4
sub-system
relatively independent components that make up the DC de-icing device, such as thyristor valves, cooling, filtering, control, protection, etc.
[GB/T 31487.1-2015, Definition 3.4]
3.5
“one phase to one phase” de-icing mode
de-icing connection mode in which two-phase conducting wires are connected in series to form direct current circuit
Note: It is also known as “1-1” de-icing mode
[GB/T 31487.1-2015, Definition 3.5]
3.6
“one phase to two phase” de-icing mode
de-icing connection mode in which two-phase conducting wires are connected in parallel and then connected in series with the third phase conductor to form direct current circuit
Note: It is also known as “1-2” de-icing mode
[GB/T 31487.1-2015, Definition 3.6]
3.7
minimum de-icing current
critical current for de-icing on the conducting wire, overhead ground wire or OPGW within a certain time, which is related to environmental conditions (temperature, wind speed, humidity), icing thickness, de-icing time, etc.
[GB/T 31487.1-2015, Definition 3.7]
3.8
maximum de-icing current
maximum allowable current in the de-icing circuit for the purpose of ensuring the safety of equipment in the de-icing circuit, which is related to environmental conditions (temperature, wind speed, humidity), icing conditions, de-icing time, etc.
[GB/T 31487.1-2015, Definition 3.8]
Contents of GB/T 31487.3-2015
Foreword i
1 Scope
2 Normative references
3 Terms and definitions
4 Type test and routine test
4.1 Thyristor valve
4.2 Water cooling equipment
4.3 Converter transformer
4.4 DC voltage measuring device
4.5 Direct current measuring device
4.6 Control and protection system
4.7 Reactor
4.8 Capacitor
4.9 Breaker
4.10 Isolating (grounding) switch
4.11 Other equipment
4.12 Thyristor valve low voltage power-on test (optional)
5 Field test
5.1 Equipment test
5.2 Sub-system test
5.3 System commissioning
6 Periodic test and de-icing simulation test
6.1 Periodic test
6.2 DC de-icing simulation test
