GB/T 36548-2024 PDF English
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Test code for electrochemical energy storage station connected to power grid
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| GB/T 36548-2018 | English | 260 |
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Test specification for electrochemical energy storage system connected to power grid
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GB/T 36548-2024: Test code for electrochemical energy storage station connected to power grid---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/GBT36548-2024
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 27.180
CCS F 19
Replacing GB/T 36548-2018
Test Code for Electrochemical Energy Storage Station
Connected to Power Grid
Issued on. JUNE 29, 2024
Implemented on. JANUARY 1, 2025
Issued by. State Administration for Market Regulation;
Standardization Administration of the People’s Republic of China.
Table of Contents
Foreword... 3
1 Scope... 6
2 Normative References... 6
3 Terms and Definitions... 7
4 Overall Requirements... 7
5 Test Conditions... 8
6 Test Instruments and Equipment... 8
7 Power Control... 10
8 Charge and Discharge Time... 15
9 Rated Energy... 16
10 Rated Energy Efficiency... 19
11 Power Quality... 21
12 Primary Frequency Modulation... 22
13 Inertia Response... 23
14 Operation Adaptability... 24
15 Fault Ride-through... 29
16 Overload Capability... 37
17 Automatic Generation Control (AGC)... 38
18 Automatic Voltage Control (AVC)... 39
19 Emergency Power Support... 40
Appendix A (normative) Technical Information Collected before Energy Storage
Station is Connected to the Power Grid for Testing... 41
Appendix B (informative) Wiring of Energy Storage Station and Energy Storage
System Connected to the Power Grid for Testing... 42
Appendix C (informative) Test Report Format... 44
Appendix D (normative) Calculation Method for Active Power Control Response Time,
Regulation Time and Control Deviation Parameters... 45
1 Scope
This document describes the test methods for power control, charge and discharge time, rated
energy, rated energy efficiency, power quality, primary frequency modulation, inertia response,
operation adaptability, fault ride-through, overload capability, automatic generation control
(AGC), automatic voltage control (AVC) and emergency power support, etc. of electrochemical
energy storage station (hereinafter referred to as “energy storage station”) connected to power
grid, as well as the requirements for the test conditions, and test instruments and equipment,
etc.
This document is applicable to the commissioning, grid connection detection, operation and
maintenance of newly constructed, renovated and expanded electrochemical energy storage
stations connected to the power grid through voltage levels of 10 (6) kV and above. The energy
storage stations connected to the power grid through other voltage levels may take this as a
reference in implementation.
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 12325 Power Quality - Deviation of Supply Voltage
GB/T 12326 Power Quality - Voltage Fluctuation and Flicker
GB/T 14549 Quality of Electric Energy Supply - Harmonics in Public Supply Network
GB/T 15543 Power Quality - Three-phase Voltage Unbalance
GB/T 15945 Power Quality - Frequency Deviation for Power System
GB/T 20840 (all parts) Instrument Transformers
GB/T 24337 Power Quality - Interharmonics in Public Supply Network
GB/T 36547 Technical Rule for Electrochemical Energy Storage System Connected to Power
Grid
GB/T 42288 Safety Code of Electrochemical Energy Storage Station
GB/T 43526 Technical Requirements for Connecting User-side Electrochemical Energy
Storage System to Distribution Network
DL/T 2528 Basic Terminology of Electrical Energy Storage
3 Terms and Definitions
The terms and definitions defined in GB/T 36547 and DL/T 2528 are applicable to this
document.
4 Overall Requirements
4.1 The test results of the energy storage station connected to the power grid shall be determined
in accordance with the requirements of GB/T 36547 and GB/T 43526.
4.2 Before the energy storage station is connected to the power grid for testing, the technical
information of the energy storage station shall be collected; a test scheme shall be prepared and
submitted to the power grid dispatching institution for approval within 30 days before the test,
then, it can be implemented. The technical information collected before the energy storage
station is connected to the power grid for testing shall comply with the provisions of Appendix
A.
4.3 Before the energy storage station is connected to the power grid for testing, an emergency
plan shall be prepared, and safety measures shall be formulated. The safety of the test work
shall comply with the provisions of GB/T 42288, and temporary fire-fighting facilities and
emergency supplies shall be equipped.
4.9 The energy storage station shall select the energy storage station or energy storage system
as the test object in accordance with the grid conditions of the access point and the requirements
of the power grid dispatching institution. For test projects carried out with an energy storage
system as the test object, the test results shall be evaluated in combination with energy storage
station model simulations. See Appendix B for the wiring of energy storage station and energy
storage system connected to the grid for testing.
4.10 The test point for the energy storage station connected to the power grid shall select a grid
connection point.
4.11 If an abnormality occurs during the test of the energy storage station connected to the
power grid, the test shall be immediately stopped, and the abnormal information shall be
recorded. After the processing is completed, the test shall be re-performed.
4.12 When renovation (expansion) or equipment modification, software upgrade, network-
related parameter modification and control logic change of the energy storage station may affect
the performance of grid connection of the energy storage station, such as. fault ride-through,
power control, rated energy, operation adaptability and power quality, etc., the affected items
shall be re-tested within 3 months of completion of the replacement or update.
5 Test Conditions
5.1 During the test, the main equipment of the energy storage station shall be in normal working conditions.
5.2 The harmonic voltage of the power grid, to which, the energy storage station is connected,
shall satisfy the requirements of GB/T 14549; the inter-harmonic voltage shall satisfy the
requirements of GB/T 24337; the grid voltage deviation shall satisfy the requirements of GB/T
12325; the voltage fluctuation and flicker values shall satisfy the requirements of GB/T 12326;
the three-phase voltage unbalance shall satisfy the requirements of GB/T 15543; the grid
frequency deviation shall satisfy the requirements of GB/T 15945.
6 Test Instruments and Equipment
6.1 Test Instruments
The test instruments shall satisfy the following requirements.
6.2 Test Equipment
6.2.1 Power grid simulation device
The power grid simulation device shall satisfy the following requirements.
7 Power Control
7.1 Active Power Control
7.1.1 Charging state
The active power test of the energy storage station in the charging state is carried out in
accordance with the following steps.
7.1.2 Discharging state
The active power test of the energy storage station in the discharging state is carried out in
accordance with the following steps.
7.2 Reactive Power Control
7.2.1 Charging state
The reactive power control test of the energy storage station in the charging state is carried out
in accordance with the following steps.
a) The data acquisition device is connected to the voltage transformer (PT) and current
transformer (CT) at the test point. The specific wiring is shown in Figure B.1;
b) Issue active power control instructions through the monitoring system and set the
energy storage station to charge at PN;
c) Issue reactive power control instructions through the monitoring system and set the
inductive reactive power of the energy storage station to start from 0, and increase
step by step with an amplitude of 10% PN, until the inductive reactive power of the
energy storage station reaches the maximum, then, stop increasing the inductive
reactive power, and continuously operate for 30 seconds at each reactive power
control point;
d) Utilize the data acquisition device to record the voltage and current of each reactive
Active
Power
Time/s
power control point, in a period of 20 ms, calculate the average value and deviation
of reactive power 15 seconds after each reactive power control point;
e) Issue active power control instructions through the monitoring system and
successively set the energy storage station to charge at 90% PN, 80% PN, 70% PN, 60%
PN, 50% PN, 40% PN, 30% PN, 20% PN and 10% PN. Repeat steps c) ~ d);
f) Issue active power control instructions through the monitoring system and set the
active power of the energy storage station to 0.Repeat steps c) ~ d);
g) Issue active power control instructions through the monitoring system and set the
energy storage station to charge at PN;
h) Issue reactive power control instructions through the monitoring system and set the
capacitive reactive power of the energy storage station to start from 0, and increase
step by step with an amplitude of 10% PN, until the capacitive reactive power of the
energy storage station reaches the maximum, then, stop increasing the capacitive
reactive power, and continuously operate for 30 seconds at each reactive power
control point;
i) Utilize the data acquisition device to record the voltage and current of each reactive
power control point, in a period of 20 ms, calculate the average value and deviation
of reactive power 15 seconds after each reactive power control point;
j) Issue active power control instructions through the monitoring system and
successively set the energy storage station to charge at 90% PN, 80% PN, 70% PN, 60%
PN, 50% PN, 40% PN, 30% PN, 20% PN and 10% PN. Repeat steps h) ~ i);
k) Issue active power control instructions through the monitoring system and set the
active power of the energy storage station to 0.Repeat steps h) ~ i).
NOTE. PN represents the rated discharge active power value, which is expressed in (kW) or (MW).
7.2.2 Discharging state
The reactive power control test of the energy storage station in the discharging state is carried
out in accordance with the following steps.
a) The data acquisition device is connected to the voltage transformer (PT) and current
transformer (CT) at the test point. The specific wiring is shown in Figure B.1;
b) Issue active power control instructions through the monitoring system and set the
energy storage station to discharge at PN;
c) Issue reactive power control instructions through the monitoring system and set the
inductive reactive power of the energy storage station to start from 0, and increase
step by step with an amplitude of 10% PN, until the inductive reactive power of the
energy storage station reaches the maximum, then, stop increasing the inductive
reactive power, and continuously operate for 30 seconds at each reactive power
control point;
d) Utilize the data acquisition device to record the voltage and current of each reactive
power control point, in a period of 20 ms, calculate the average value and deviation
of reactive power 15 seconds after each reactive power control point;
e) Issue active power control instructions through the monitoring system and
successively set the energy storage station to discharge at 90% PN, 80% PN, 70% PN,
60% PN, 50% PN, 40% PN, 30% PN, 20% PN and 10% PN. Repeat steps c) ~ d);
f) Issue active power control instructions through the monitoring system and set the
active power of the energy storage station to 0.Repeat steps c) ~ d);
g) Issue active power control instructions through the monitoring system and set the
energy storage station to discharge at PN;
h) Issue reactive power control instructions through the monitoring system and set the
capacitive reactive power of the energy storage station to start from 0, and increase
step by step with an amplitude of 10% PN, until the capacitive reactive power of the
energy storage station reaches the maximum, then, stop increasing the capacitive
reactive power, and continuously operate for 30 seconds at each reactive power
control point;
7.3 Power Factor Regulation Capability
The test of the power factor regulation capability of the energy storage station is carried out in
accordance with the following steps.
a) The data acquisition device is connected to the voltage transformer (PT) and current
transformer (CT) at the test point. The specific wiring is shown in Figure B.1;
b) Issue power control instructions through the monitoring system and set the energy
storage station to discharge at PN and continuously operate for 2 minutes;
c) Issue power factor control instructions through the monitoring system and set the
power factor of the grid connection point of the energy storage station to be gradually
adjusted from 1.0 to leading 0.90, with a regulation amplitude of 0.01, then, from
leading 0.90 to 1.0, with a regulation amplitude of 0.01.Continuously operate for 2
minutes at each power factor control point;
8 Charge and Discharge Time
The test of charge and discharge time of the energy storage station includes tests of charge
response time, discharge response time, charge regulation time, discharge regulation time,
charge-to-discharge conversion time, and discharge-to-charge conversion time, etc. The test
curve is shown in Figure 3.The test is carried out in accordance with the following steps.
a) The data acquisition device is connected to the voltage transformer (PT) and current
transformer (CT) at the test point. The specific wiring is shown in Figure B.1;
b) Issue power control instructions through the monitoring system, set the active power
of the energy storage station to 0, and continuously operate for 1 minute;
c) Issue power control instructions through the monitoring system, set the energy storage
station to charge at PN, and continuously operate for 1 minute;
i) Utilize the data acquisition device to record the voltage, current and active power of
each power control point, and draw the active power curve;
j) Calculate the charge response time, charge regulation time, discharge response time,
discharge regulation time, discharge-to-charge conversion time and charge-to-
discharge conversion time;
k) Repeat steps b) ~ j) twice, and take the maximum value of the 3 tests as the test result.
9 Rated Energy
The test of rated energy of the energy storage station includes the tests of rated charging energy
and rated discharging energy. The test is carried out in accordance with the following steps.
a) The data acquisition device is connected to the voltage transformer (PT) and current
transformer (CT) at the test point. The specific wiring is shown in Figure B.1.
b) Issue power control instructions through the monitoring system and set the energy
storage station to stop discharging when discharging at PN reaches the discharge
termination conditions.
c) Issue power control instructions through the monitoring system and set the energy
storage station to stop charging when charging at PN reaches the charge termination
conditions.
d) Utilize the data acquisition device to record the charging energy Ec1 and auxiliary
energy consumption Wc1 of the energy storage station.
e) Issue power control instructions through the monitoring system and set the energy
storage station to stop discharging when discharging at PN reaches the discharge
termination conditions.
f) Utilize the data acquisition device to record the discharging energy Ed1 and auxiliary
energy consumption Wd1 of the energy storage station.
g) Calculate the rated charging energy Erc1 and rated discharging energy Erd1 during this
charging and discharging process of the energy storage station and record them. The
calculation method is shown in Formula (1) and Formula (2).
i) Repeat steps c) ~ h) twice and record the rated charging energy Erc2 and Erc3 of the
energy storage station, and the rated discharging energy Erd2 and Erd3 of the energy
storage station during each test.
j) Calculate the average value of rated charging energy and the average value of rated
discharging energy during the three tests of the energy storage station. Record them
as the rated charging energy Erc and rated discharging energy Erd. The calculation
method is shown in Formula (3) and Formula (4).
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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