GB/T 42715-2023 PDF English
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GB/T 42715-2023: General specification for mobile energy storage power station---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT42715-2023
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 27.180
CCS F 19
General Specification for Mobile Energy Storage Power
Station
ISSUED ON: MAY 23, 2023
IMPLEMENTED ON: DECEMBER 1, 2023
Issued by: State Administration for Market Regulation;
Standardization Administration of the People’s Republic of China.
Table of Contents
Foreword ... 3
1 Scope ... 4
2 Normative References ... 4
3 Terms and Definitions ... 6
4 Classification and Architecture ... 7
5 Service Conditions ... 7
6 Appearance and Mechanical Properties ... 8
7 Basic Functions ... 9
8 Electrical Properties ... 10
9 Environmental Protection and Safety ... 11
10 Main Equipment ... 12
11 Tests ... 16
12 Operation and Maintenance ... 30
13 Marking, Transportation and Storage ... 31
Appendix A (normative) Test Items of Mobile Energy Storage Power Stations ... 33
General Specification for Mobile Energy Storage Power
Station
1 Scope
This document specifies the classification and architecture, service conditions, appearance and
mechanical properties, basic functions, electrical properties, environmental protection and
safety, main equipment, testing, operation and maintenance, as well as marking, transportation
and storage requirements for mobile energy storage power stations.
This document is applicable to the design, manufacturing, testing, detection, operation,
maintenance and overhaul of mobile energy storage power stations adopting electrochemical
cells, super capacitors and flywheels as the electric energy storage media, and with voltage
levels of 10 kV and below.
2 Normative References
The contents of the following documents constitute indispensable clauses of this document
through the normative references in the text. In terms of references with a specified date, only
versions with a specified date are applicable to this document. In terms of references without a
specified date, the latest version (including all the modifications) is applicable to this document.
GB/T 1413 Series 1 Freight Containers - Classification, Dimensions and Ratings
GB/T 4208 Degrees of Protection Provided by Enclosure (IP code)
GB 4793.1 Safety Requirements for Electrical Equipment for Measurement, Control, and
Laboratory Use - Part 1: General Requirements
GB/T 5338 Series 1 Freight Containers - Specification and Testing - Part 1: General Cargo
Containers for General Purposes
GB/T 7251.1 Low-voltage Switchgear and Controlgear Assemblies - Part 1: General Rules
GB/T 12326 Power Quality - Voltage Fluctuation and Flicker
GB/T 13729 Remote Terminal Unit Equipment
GB/T 14549 Quality of Electric Energy Supply - Harmonics in Public Supply Network
GB/T 15543 Power Quality - Three-phase Voltage
GB/T 15945 Power Quality - Frequency Deviation for Power System
harmonic distortion rate of the AC side output voltage of the mobile energy storage power
stations shall not exceed 3%.
8.8 Voltage Unbalance Degree
Under the conditions of three-phase unbalanced rated resistive load of the mobile energy
storage power stations, the output voltage unbalance degree shall be less than 2% and shall not
exceed 4% in the short term.
8.9 Dynamic Voltage Transient Range
Under the conditions of three-phase balanced resistive load, when the load suddenly rises from
20% to 100% or drops from 100% to 20%, the output voltage transient value of the mobile
energy storage power stations shall be less than 10%.
9 Environmental Protection and Safety
9.1 Requirements for Environmental Protection
9.1.1 When the battery electrolyte in the mobile electrochemical energy storage power stations
accidentally leaks, the leaked electrolyte shall be disposed of in time, and shall not be directly
discharged; the leaked battery shall be recycled.
9.1.2 When the mobile energy storage power stations are operating at rated charging power or
rated discharging power, the noise on both sides along the radial direction of the compartment
and 1 m behind the compartment, and 1.6 m away from the ground shall not be greater than 70
dB; the noise on both sides along the radial direction of the compartment and 7 m behind the
compartment, and 1.6 m away from the ground shall not be greater than 65 dB.
9.2 Safety Requirements
9.2.1 Fire extinguishing system
The fire extinguishing system shall satisfy the following requirements:
a) The mobile energy storage unit shall be equipped with at least one Class E fire
extinguisher, and the extinguishing medium filling quantity of each Class E fire
extinguisher shall comply with the stipulations of GB 50370;
b) The requirements for the automatic fire alarm system shall comply with the
stipulations of GB 51048;
c) The mobile energy storage unit should be equipped with an automatic fire
extinguishing device.
9.2.2 Temperature rise
The temperature rise of the equipment in the mobile energy storage unit shall comply with the
stipulations of GB/T 36545.
9.2.3 Grounding for lightning protection
The grounding design for lightning protection of the AC electrical equipment in the mobile
energy storage power stations shall comply with the stipulations of GB/T 50065.
9.2.4 Insulation
The insulation design of the mobile energy storage power stations shall comply with the
relevant stipulations of GB/T 50064.
10 Main Equipment
10.1 Mobile Platform
The mobile platform shall satisfy the following requirements:
a) The dimension and rated mass of the compartment adopt the dimension and rated
mass specified in GB/T 1413;
b) The mass of the mobile energy storage power station does not exceed the load limit
of the mobile platform;
c) The structural strength of the compartment complies with the relevant stipulations of
the design requirements in GB/T 5338.
10.2 Electric Energy Storage Equipment
10.2.1 Requirements for electrochemical cells
The electrochemical battery system shall satisfy the following requirements:
a) When lithium-ion batteries, lead-carbon batteries, lead-acid batteries or all-vanadium
redox flow batteries are selected for the battery system, they shall respectively comply
with the stipulations of GB/T 36276, GB/T 36280, GB/T 36558 and GB/T 32509;
b) For the hydrogen fuel cell system, the selection of proton exchange membrane fuel
cells shall comply with the stipulations of GB/T 36544; the general safety of the
proton exchange membrane fuel cell power supply system shall comply with the
relevant stipulations of GB/T 27748.1 and GB/T 27748.3; the hydrogen supply system
for proton exchange membrane fuel cells shall comply with the stipulations of GB/T
34872;
c) The battery management system shall comply with the stipulations of GB/T 34131.
10.2.2 Requirements for super capacitors
10.4.2.2 Active power control
The monitoring system of the mobile energy storage power stations shall be able to
automatically receive the active power control commands issued by the dispatching master
station system, and reasonably allocate the active power output of the mobile energy storage
unit, so as to satisfy the output control requirements of the power stations.
10.4.2.3 Reactive power control
The monitoring system of the mobile energy storage power stations shall be able to
automatically receive the reactive power control commands issued by the dispatching master
station system, and reasonably allocate the reactive power output of the mobile energy storage
unit, so as to satisfy the output control requirements of the power stations.
10.4.2.4 Grid-connected / off-grid switching control
The monitoring system of the mobile energy storage power stations shall be able to control the
power stations to switch from the grid-connected mode to the off-grid operation mode, and
from the off-grid mode to the grid-connected operation mode.
10.4.3 Alarm
The alarm of the monitoring system shall satisfy the following requirements:
a) The alarm information includes the name of the alarm point, alarm content, alarm
time and confirmation status, which are arranged in chronological order. When an
accident alarm is triggered, the screen and audible alarm can be forwarded;
b) The monitoring system has the function of triggering alarms for status changes,
measured value out-of-limit, calculated value out-of-limit and communication
interruptions, etc.;
c) The monitoring system has the function of querying the history of alarm information.
10.4.4 Human-machine interface
The human-machine interface of the monitoring system shall satisfy the following requirements:
a) The human-machine interface display content of the monitoring system includes
system topology diagram, network diagram, operating condition diagram and
communication network diagram, etc. The graphical display may include the modes
of trend chart, histogram and pie chart, etc.;
b) The human-machine interface of the monitoring system supports multi-screen display,
graphic multi-window, stepless zooming, roaming, drag and drop, hierarchical and
graded display, etc.;
c) The human-machine interface of the monitoring system has a graphic modeling tool
integrated with a graphic model library and a network topology management tool,
supports user-defined equipment primitives and interval templates, and supports the
copying of various primitives with model attributes.
10.4.5 Report form processing
The report form processing of the monitoring system shall satisfy the following requirements:
a) The historical data of the monitoring system is stored for no less than 3 months;
b) The monitoring system has the functions of selecting historical data and generating
report forms in different formats and types in accordance with the demands;
c) The report forms support file export and printing functions.
10.4.6 Self-diagnosis function
The monitoring system shall diagnose the operating conditions of each software and hardware
online, and when abnormalities and failures are found, it shall be able to give an alarm and store
in time. When various types of equipment with redundant configurations experience software
or hardware failures, it shall be able to automatically switch to the standby equipment, and the
switching process shall not affect the normal operation of the entire system.
10.5 Auxiliary System
10.5.1 Requirements for power distribution system
The design of power distribution inside the compartment shall comply with the stipulations of
GB 50054.
10.5.2 Requirements for vehicle-mounted auxiliary equipment
The vehicle-mounted auxiliary equipment shall satisfy the following requirements:
a) The mobile energy storage power stations should install an auxiliary support system
on the chassis. The support system can carry the maximum total mass of the vehicle
and realize manual or electronic control operation. Each support member can be
individually adjusted;
b) The temperature control equipment inside the compartment of the mobile energy
storage power stations has manual and monitoring system remote control functions;
c) The vehicle should be equipped with the necessary power cables and cable winches;
d) AC and DC lighting systems are set up in the compartment, and there should be lift
lighting and site lighting devices on the roof;
e) When the distance between the compartment and the ground is greater than 600 mm,
a boarding ladder is provided at the lower part of the compartment door.
11.3.1 Environmental conditions
11.3.1.1 Indoor test environment
Indoor tests shall be conducted under the following environmental conditions:
a) Altitude: 2,000 m;
b) Temperature: 20 C ~ 30 C;
c) Relative humidity: 95%.
11.3.1.2 Outdoor test environment
Outdoor tests shall be conducted under the following environmental conditions:
a) Altitude: 2,000 m;
b) Temperature: 20 C ~ 40 C;
c) Rainfall: 8 mm/h;
d) The longitudinal (front and back) horizontal inclination of the ground carrying the
mobile energy storage power stations is not greater than 6, and the transverse (left
and right) horizontal inclination is not greater than 5;
e) Relative humidity: 95%.
11.3.2 Electrical conditions
11.3.2.1 Grid power quality
The grid power quality of the power grid, to which, the mobile energy storage power stations
are connected, shall comply with the stipulations of 5.2.
11.3.2.2 Electrical safety
The electrical safety of the test site shall comply with the stipulations of GB 4793.1.
11.4 Test Equipment
11.4.1 Test Instruments and meters
The accuracy levels of voltage and current measuring devices, thermometers, hygrometers,
electric energy meters and data acquisition devices shall at least satisfy the requirements of
Table 2. The test instruments and meters shall satisfy the following requirements:
a) The voltage transformer complies with the stipulations of GB/T 20840.3;
b) The current transformer complies with the stipulations of GB/T 20840.2;
g) The rated power is not less than 1.2 times the rated power of the mobile energy storage
power stations.
11.4.3 Simulated load
The simulated load shall at least satisfy the following requirements:
a) The resistance value, inductance value and capacitance value are adjustable;
b) The minimum current change step size generated by adjusting the load is not greater
than 0.1 A;
c) The allowable current at each voltage point is greater than the maximum current of
the mobile energy storage power stations;
d) It has non-linear load and impact load characteristics.
11.4.4 Temperature test equipment
The temperature test equipment shall satisfy the following requirements:
a) In terms of the storage capacity, all the temperature data during the test can be stored;
b) The number of channels can satisfy the demands of the temperature measurement
points;
c) The temperature measurement range of the temperature measurement channels at
least satisfies 40 C ~ 160 C, and the temperature measurement accuracy is not
lower than 0.5 C;
d) Each temperature measurement channel has a unified time reference signal;
e) The sampling frequency is not lower than 1 Hz.
11.5 Appearance and Mechanical Properties Test
11.5.1 Appearance
Conduct visual inspection on the integrity of the appearance of the compartment.
11.5.2 Protection degree
The IP protection degree of the compartment shall be tested in accordance with the method
specified in GB/T 4208.
11.5.3 Anti-vibration
The vibration test of the mobile energy storage power stations is carried out in accordance with
the following driving or transportation conditions. After the driving test is completed, inspect
11.6.2.1 Passive grid-connected to off-grid switching time
The test of the passive grid-connected to off-grid switching time is carried out in accordance
with the following steps:
a) In accordance with Figure 3, connect the test circuit, set the mobile energy storage
power station to work under the operating conditions of resistive and inductive load
(power factor is 0.8), and the power is 100% of the rated power of the mobile energy
storage power stations under test;
b) Set the mobile energy storage power stations to work under the operating conditions
of grid-connected rated power charging;
c) After the mobile energy storage power stations stably operate, disconnect the grid-
connection switch;
d) Utilize the data acquisition device to measure and record the data and waveforms of
the load voltage Uload and the grid-side voltage Uac;
e) Measure the time interval from when the grid-connection switch is disconnected to
when the discharge current IF of the mobile energy storage power stations reaches 90%
of the rated current;
f) Respectively adjust the load power to 30% and 60% of the rated power of the mobile
energy storage power stations under test, repeat steps b) ~ e), and record the test
results;
g) Set the mobile energy storage power stations to work under the operating conditions
of rated power discharging, and repeat steps c) ~ f);
h) Set the mobile energy storage power stations to work under the operating conditions
of resistive and capacitive load (power factor is 0.8), and the power is 100% of the
rated power of the mobile energy storage power stations under test; repeat steps b) ~
g).
11.6.2.2 Active grid-connected to off-grid switching time
The test of the active grid-connected to off-grid switching time is carried out in accordance with
the following steps:
a) In accordance with Figure 3, connect the test circuit, and disconnect the active grid-
connection switch of the mobile energy storage power stations under test;
b) Set the mobile energy storage power station to work under the operating conditions
of resistive and inductive load (power factor is 0.8), and the power is 100% of the
rated power of the mobile energy storage power stations under test;
c) Set the mobile energy storage power stations to work under the operating conditions
of grid-connected rated power charging;
d) After the mobile energy storage power stations stably operate, disconnect the grid-
connection switch;
e) Utilize the data acquisition device to measure and record the data and waveforms of
the load voltage Uload and the grid-side voltage Uac;
f) Measure the time interval from when the mobile energy storage power stations receive
the off-grid command to when the discharge current IF reaches 90% of the rated
current;
g) Respectively adjust the load power to 30% and 60% of the rated power of the mobile
energy storage power stations under test, repeat steps b) ~ e), and record the test
results;
h) Set the mobile energy storage power stations to work under the operating conditions
of rated power discharging, and repeat steps c) ~ g);
i) Set the mobile energy storage power stations to work under the operating conditions
of resistive and capacitive load (power factor is 0.8), and the power is 100% of the
rated power of the mobile energy storage power stations under test; repeat steps b) ~
h).
11.6.3 Off-grid to grid-connected operation
The test of the off-grid to grid-connected operation is carried out in accordance with the
following steps.
a) In accordance with Figure 3, connect the test circuit, disconnect the active grid-
connection and off-grid switch, and set the mobile energy storage power stations
under test to the off-grid operation mode.
b) Set the mobile energy storage power station to work under the operating conditions
of resistive and inductive load (power factor is 0.8), and the power is 100% of the
rated power of the mobile energy storage power stations under test.
c) Set the mobile energy storage power stations to work under the operating conditions
of grid-connected rated power discharging.
d) After the mobile energy storage power stations stably operate, issue the active grid
connection command.
e) Utilize the data acquisition device to measure the output voltage waveforms and data
of the mobile energy storage power stations.
f) In accordance with Formula (1), calculate the dynamic transient value of the output
voltage during active off-grid to grid-connected operation:
and consistent with the actual situation.
11.7.2 Temperature rise
The test of the temperature rise is carried out in accordance with the following steps:
a) Utilize the temperature test equipment to respectively install at least one measurement
point on each of the six surfaces inside the compartment, and respectively install at
least three measurement points on the surface of the battery cabinet and the surface
of the energy storage converter cabinet inside the compartment;
b) When the mobile energy storage power stations are under the operating conditions of
the rated power, and the surface and internal temperatures of the compartment do not
change by more than 1 C within 15 consecutive minutes, record the current
temperature values of each measurement point.
11.7.3 Overload capacity
The test of the overload capacity is carried out in accordance with the following steps:
a) In accordance with Figure 2, connect the test circuit;
b) Set the AC port voltage of the mobile energy storage unit as the rated value;
c) Control the power of the mobile energy storage unit to gradually increase to 110% of
the rated power, and maintain stable operation at 110% of the rated power for 10 min;
d) Control the power of the mobile energy storage unit to gradually decrease to the rated
power, and maintain the stable operation at the rated power for 2 min;
e) Control the power of the mobile energy storage unit to gradually increase to 120% of
the rated power, and maintain stable operation at 120% of the rated power for 1 min;
f) Record the AC port voltage and active power of the mobile energy storage unit during
the testing.
11.7.4 Noise
The test of the noise is carried out in accordance with the following steps:
a) As shown in Figure 4, the background noise value at the measurement point is less
than 10 dB below the allowable value of the operating noise at this point; set the
mobile energy storage power stations to operate in the rated power charging state;
b) At 1.6 m from the ground, take A1, A2 and A3 shown in Figure 4 to measure the noise
at 1 m, and take the average value;
c) At 1.6 m from the ground, take B1, B2 and B3 shown in Figure 4 to measure the noise
at 7 m, and take the average value;
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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