Codeofchina.com is in charge of this English translation. In case of any doubt about the English translation, the Chinese original shall be considered authoritative.
This standard is developed in accordance with the rules given in GB/T 1.1-2009.
This standard was proposed by China Electrical Equipment Industrial Association.
This standard is under the jurisdiction of SAC/TC 342 National Technical Committee on Fuel Cell and Flow Battery of Standardization Administration of China.
Proton exchange membrane fuel cell power supply system for power distribution substation
1 Scope
This standard specifies the system composition, technical requirements, test methods, marking, packaging, transportation and storage for the proton exchange membrane fuel cell power supply system for power distribution substation.
This standard is applicable to the DC backup power supply system of proton exchange membrane fuel cells for power distribution substation using hydrogen as fuel.
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/T 3785 (All parts) Electroacoustics - Sound level meters
GB/T 4208 Degrees of protection provided by enclosure (IP code)
GB/T 9254-2008 Information technology equipment - Radio disturbance characteristics - Limits and methods of measurement
GB/T 19826-2014 General specification and safety requirements for DC power supply equipment of power projects
GB/T 27748.1 Stationary fuel cell power systems - Part 1: Safety
GB/T 27748.3 Stationary fuel cell power system - Part 3: Installation
GB/T 28816 Fuel cell - Terminology
GB/T 31036-2014 Proton exchange membrane fuel cell backup power system - Safety
GB/T 31037.1-2014 Fuel cell power system used for industrial lift truck applications - Part 1: Safety
JB/T 5777.2-2002 General specification for control and protection panel (cabinet, desk) of secondary circuit of power system
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3 Terms and definitions
For the purposes of this document, the terms and definitions given in GB/T 28816 and the following apply.
3.1
switching-on impulse discharge
process of the DC power supply system increasing current during the switching-on time when multiple circuit breakers closing mechanisms in a power distribution substation act simultaneously or in a short time
3.2
current required during fault clearance service
general term for the load current of all electrical control, signal, measurement, relay protection, automatic devices, AC uninterruptible power supply, circuit breaker opening/closing actuating mechanism, telecontrol, communication device and emergency lighting, etc. in the event of an accidental power fault in the AC power system of a power distribution substation
4 System composition
The proton exchange membrane fuel cell power supply system for power distribution substation is mainly composed of a fuel processing system, oxidant process system, fuel cell module, power conversion unit, control system, ventilation system, water and heat management system and auxiliary energy storage module. The schematic diagram for the system structure is as shown in Figure 1.
Figure 1 Schematic diagram for the structure of the proton exchange membrane fuel cell power supply system for power distribution substation
In Figure 1, the fuel processing system is composed of the chemical and/or physical processing equipment and associated heat exchangers and controllers required by the fuel cell power supply system to prepare fuel and pressurize it where necessary.
The oxidant process system is a system that meters, conditions, processes and may pressurize the incoming supply of oxidant for use within the fuel cell power supply system.
5 Technical requirements
5.1 Service conditions
The proton exchange membrane fuel cell power supply system for power distribution substation shall be able to operated normally under the following ambient conditions:
——operating ambient temperature: -10℃~40℃;
——ambient relative humidity: 10%~95% (no moisture condensation);
——altitude: not exceeding 2,000m.
5.2 Technical requirements for the system
5.2.1 General safety requirements
The proton exchange membrane fuel cell power supply system (hereinafter referred to as the “system”) shall meet the requirements of GB/T 27748.1 and GB/T 27748.3.
5.2.2 Appearance and structure
The appearance and structure of the system shall meet the following requirements:
——the surface of the system is clean and free of obvious deformation and mechanical damage; the interface contact is free of rust;
——the surface of the system shall have clear product identification;
——the communication interfaces, power interfaces, dry contact interfaces and hydrogen interfaces of the system shall have clear identifications.
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5.2.3 DC power supply capacity
5.2.3.1 DC bus output voltage
The maximum variation range of the DC bus output voltage shall be 90% to 110% of the nominal voltage of the DC system.
5.2.3.2 Accident discharge capacity
After discharging for a specified time at the rated power, the system shall be subjected to the switching-on impulse discharge test, in which 8 times the impulse current is superimposed to simulate the accident current. During the 3 switching-on impulse discharge tests, the DC bus output voltage shall not be lower than 90% of DC nominal voltage.
Foreword III
1 Scope
2 Normative references
3 Terms and definitions
4 System composition
5 Technical requirements
5.1 Service conditions
5.2 Technical requirements for the system
5.2.1 General safety requirements
5.2.2 Appearance and structure
5.2.3 DC power supply capacity
5.2.4 Startup/shutdown mode
5.2.5 Stand-by power consumption of the system
5.2.6 Overload capability
5.2.7 Initial power generation efficiency of the system
5.2.8 Continuous operating time
5.2.9 Protection and alarm function
5.2.10 Monitoring function
5.2.11 System noise
5.2.12 Insulation resistance
5.2.13 Dielectric strength
5.2.14 Wet heat resistance
5.2.15 Ingress protection rating
5.2.16 Anti-electric shock measures
5.2.17 Electromagnetic compatibility requirements
5.2.18 Requirements for the system service life
6 Test methods
6.1 Pre-test preparation
6.1.1 Test instruments and equipment and requirements for them
6.1.2 Test environment
6.1.3 Test circuit block diagram
6.2 Appearance and structure inspection
6.3 DC bus output voltage test
6.4 Accident discharge capacity test
6.5 Startup/shutdown mode test
6.6 System’s stand-by power consumption test
6.7 Overload capacity test
6.8 System’s power generation efficiency test
6.9 Test method for continuous operation
6.10 Protection and alarm function test
6.10.1 Overload protection test
6.10.2 Test of high- and low-pressure hydrogen protection at the inlet of the cell stack
6.10.3 Output over/under voltage protection test
6.10.4 Output short-circuit protection test
6.10.5 Over-temperature protection test
6.10.6 Hydrogen Leakage test
6.10.7 Alarm information
6.11 Monitoring function test
6.12 System noise test
6.13 Insulation resistance
6.14 Dielectric strength
6.15 Wet heat resistance
6.16 Ingress protection rating
6.17 Anti-electric shock measures
6.18 Electromagnetic compatibility test
6.18.1 Immunity test
6.18.2 Electromagnetic emission test
6.19 Service life test
7 Marking, packaging, transportation and storage
7.1 Marking
7.1.1 System marking
7.1.2 Polarity marking
7.1.3 Warning marking
7.2 Packaging
7.3 Transportation
7.4 Storage
Annex A (Normative) Test instruments and equipment
A.1 Adjustable resistive load
A.2 DC current shunt
A.3 DC ammeter
A.4 DC digital voltmeter
A.5 Digital storage oscilloscope
A.6 Analog oscilloscope
A.7 Insulation resistance tester
A.8 Insulation resistance tester
A.9 Constant temperature and humidity test chamber
A.10 Sound level meter
A.11 Mass flowmeter
