GB/T 42726-2023 PDF English
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Specification of supervision and control system for electrochemical energy storage station
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GB/T 42726-2023: Specification of supervision and control system for electrochemical energy storage 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/GBT42726-2023
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 27.180
CCS F 19
Specification of Supervision and Control System for
Electrochemical Energy Storage 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 ... 5
4 Overall Requirements ... 5
5 Normal Operating Conditions ... 6
6 Technical Requirements ... 6
7 Testing ... 12
8 Marking, Packaging, Transportation and Storage ... 21
Appendix A (informative) Typical Architecture of Supervision and Control System of
Electrochemical Energy Storage Station... 22
Appendix B (informative) Information Point Table of Supervision and Control System
of Electrochemical Energy Storage Station ... 24
Appendix C (informative) Alarm Classification Table of Supervision and Control
System of Electrochemical Energy Storage Station ... 30
Specification of Supervision and Control System for
Electrochemical Energy Storage Station
1 Scope
This document specifies the requirements for data collection, data processing, control and
adjustment, alarms, event sequential record, post disturbance review, communication, data
storage, human-machine interface, system time synchronization and system load rate of the
supervision and control system for electrochemical energy storage station (hereinafter referred
to as “supervision and control system”). It also describes the corresponding test methods, and
specifies the normal operating conditions, system architecture, marking, packaging,
transportation and storage, etc. of the supervision and control system.
This document is applicable to the design, manufacturing, testing, detection, operation,
maintenance and overhaul of the supervision and control system for electrochemical energy
storage station.
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 191 Packaging - Pictorial Markings for Handling of Goods
GB/T 4798.2 Classification of Environmental Conditions - Classification of Groups of
Environmental Parameters and Their Severities - Part 2: Transportation and Handling
GB/T 13384 General Specifications for Packing of Mechanical and Electrical Product
GB/T 19582 (all parts) Modbus Industrial Automation Network Specification
GB/T 22239 Information Security Technology - Baseline for Classified Protection of
Cybersecurity
GB/T 36572 Guidelines of Cyber Security Protection for Electric Power System Supervision
and Control
DL/T 634.5104 Telecontrol Equipment and Systems - Part 5-104: Transmission Protocols -
Network Access for IEC 60870-5-101 Using Standard Transport Profiles
DL/T 667 Telecontrol Equipment and Systems - Part 5: Transmission Protocols Section 103
Companion Standard for the Information Interface of Protection Equipment
DL/T 698.41 Data Acquisition and Management System for Electrical Energy - Part 4-1:
Communication Protocol - Master Station Communication with Data Acquisition Terminal
DL/T 719 Telecontrol Equipment and Systems - Part 5: Transmission Protocol Section 102:
Companion Standard for the Transmission of Integrated Totals in Electric Power Systems
DL/T 860 (all parts) Communication Networks and Systems for Power Utility Automation
DL/T 2528 Basic Terminology of Electrical Energy Storage
3 Terms and Definitions
What is defined in DL/T 2528, and the following terms and definitions are applicable to this
document.
3.1 station level
Station level refers to a power station control level that is composed of supervision and control
system equipment intensively arranged in the computer room or secondary equipment room
(cabin) to realize functions, such as: full-station supervision and control, etc.
3.2 local level
Local level refers to a power station control level that is composed of supervision and control
system equipment arranged on the site of the controlled equipment to realize functions, such as:
data collection, equipment monitoring and control, etc.
4 Overall Requirements
4.1 The architecture of the supervision and control system shall include the station level and
the local level to satisfy the system reliability, real-time and scalability requirements. See
Appendix A for the typical system architecture.
4.2 The supervision and control system shall be equipped with the functions of monitoring,
control, protection and communication, etc.
4.3 The supervision and control system shall utilize important equipment, such as: servers and
telecontrol workstations, which should be redundantly configured.
4.4 Before exiting the factory, the supervision and control system shall be subject to various
functions and related performance tests.
4.5 The network security protection of the supervision and control system shall comply with
the stipulations of GB/T 22239 and GB/T 36572.
6.1.1 The supervision and control system shall collect operation information of equipment, such
as: battery management system, energy storage converter, power transformation and
distribution equipment, and auxiliary system, etc.
6.1.2 For information collected on the battery management system, see Table B.1 in Appendix
B.
6.1.3 For information collected on the energy storage converter, see Table B.2.
6.1.4 For information collected on the power transformation and distribution equipment, see
Table B.3.
6.1.5 For information collected on auxiliary systems, such as: fire-fighting system, heating
ventilation and air-conditioning system, environmental monitoring device and DC power
supply, etc., see Table B.4.
6.1.6 The data collection response time of the supervision and control system shall satisfy the
following requirements:
a) The response time of digital quantity information (from I/O input terminal to station
level) does not exceed 2 s;
b) The response time of analog quantity information (from I/O input terminal to station
level) does not exceed 3 s.
6.2 Data Processing
6.2.1 The supervision and control system shall identify different data quality statuses and
display them in different colors.
6.2.2 The supervision and control system shall be equipped with the function of common
mathematical operation and support data statistics within a set period.
6.3 Control and Adjustment
6.3.1 The control function of the supervision and control system mainly includes:
a) Start-stop, grid-connected / off-grid operation mode switching, and charge / discharge
mode switching of the energy storage system;
b) Connecting / disconnecting operation of circuit breaker and isolation switch, etc.
6.3.2 The time from when the station level of the supervision and control system issues a control
command to when the local level equipment responds to the command shall not exceed 1 s.
6.3.3 The supervision and control system shall be able to receive dispatching commands,
support active and reactive power control and adjustment, and be equipped with the functions
of automatic generation control (AGC) and automatic voltage control (AVC).
levels, and forward corresponding alarm screens. After an alarm event occurs, the time for the
supervision and control system to display the information or issue an audible and visual alarm
shall not exceed 2 s.
6.4.6 If the self-diagnosis status is abnormal, the supervision and control system shall send out
an alarm signal.
6.5 Event Sequential Record and Post Disturbance Review
6.5.1 The supervision and control system shall sequentially record important events of the
electrochemical energy storage power station. The records should include the following
contents:
a) Action signals, alarm signals and timescales uploaded by the equipment, such as:
battery management system and energy storage converter, etc.;
b) Action signals, alarm signals and timescales uploaded by power transformation and
distribution equipment, such as: circuit breaker, isolation switch and transformer, etc.
6.5.2 The supervision and control system shall be equipped with the function of post disturbance
review. The sampling frequency of the post disturbance review records should not be less than
1 time/s, and the duration of post disturbance review should not be less than 180 s. In addition,
two periods: before the disturbance and after the disturbance, shall be included, and no less than
60 s for before the disturbance and no less than 120 s for after the disturbance.
6.6 Communication
6.6.1 The communication among the equipment of the supervision and control system shall
adopt Ethernet interfaces, and should adopt communication protocols that comply with the
standards, such as: GB/T 19582 (all parts), DL/T 667 and DL/T 860 (all parts).
6.6.2 The supervision and control system shall be equipped with the function of communicating
with the superior dispatching, and support Ethernet interfaces and serial interfaces, etc.; for
electrochemical energy storage power stations connected to public power grids with a voltage
level of 110(66) kV and above, the communication channels between the supervision and
control system and the dispatch terminal shall be redundantly configured, one of which is an
optical cable channel. The telecontrol workstation of the supervision and control system shall
satisfy the following requirements:
a) Adopt communication protocols that comply with the standards, such as: DL/T
634.5104 and DL/T 719, etc.;
b) Be equipped with the function of direct acquisition and direct sending of telecontrol
information;
c) Be equipped with the capability of communicating with one or multiple superior
dispatching.
6.6.3 The communication between the station level and local level of the supervision and
control system should adopt Ethernet, and satisfy the following requirements:
a) The communication with the battery management system and energy storage
converter should adopt communication protocols that comply with the standards, such
as: GB/T 19582 (all parts), DL/T 634.5104 and DL/T 860 (all parts), etc.;
b) The communication with the protection devices should adopt communication
protocols that comply with the standards, such as: GB/T 19582 (all parts), DL/T 667
and DL/T 860 (all parts), etc.;
c) The communication with the electric energy collection terminal should adopt
communication protocols that comply with the standards, such as: GB/T 19582 (all
parts), DL/T 698.41, DL/T 719 and DL/T 860 (all parts), etc.;
d) The communication with the fault recording device should adopt communication
protocols that comply with the standards, such as: GB/T 19582 (all parts), DL/T 667
and DL/T 860 (all parts);
e) The communication with the equipment, such as: fire-fighting system, heating
ventilation and air-conditioning system, and environmental monitoring device, etc.,
should adopt communication protocols that comply with the standards, such as: GB/T
19582 (all parts) and DL/T 860 (all parts), etc.
6.6.4 The supervision and control system shall be equipped with the function of automatic
switching between main and backup communication channels.
6.7 Data Storage
6.7.1 The supervision and control system shall be equipped with the function of converting real-
time data into historical data for storage.
6.7.2 The supervision and control system shall be equipped with the function of regular and
triggered storage of real-time data of the power station.
6.7.3 The supervision and control system shall be equipped with the function of event sequential
record storage.
6.7.4 The supervision and control system shall have a data storage capacity of no less than 3
months.
6.8 Human-machine Interface
6.8.1 The human-machine interface of the supervision and control system shall be equipped
with the functions of data input, display and output, etc.
6.8.2 The human-machine interface of the supervision and control system shall be equipped
with the functions of equipment control and adjustment operation, and parameter setting, etc.
e) Record the calculation results.
7.4 Test of Control and Adjustment
7.4.1 Equipment control test
The test of equipment control shall be carried out in accordance with the following steps:
a) On the control interface of the supervision and control system, select a controllable
switch device, perform opening and closing, or start and stop operations, and record
the operation time t1;
b) Record the time t2 when the status of the equipment in the supervision and control
system starts to change and the changes;
c) Calculate and record the control command response time Δt = t2 t1;
d) In accordance with a) ~ c), successively test other controllable equipment of the
energy storage station in the analog device.
7.4.2 Test of power adjustment
The test of power adjustment shall be carried out in accordance with the following steps:
a) Set the control level of the supervision and control system to “station level” and the
control mode to “manual”;
b) On the supervision and control system, adjust the active power or reactive power
setting of each energy storage system, and record the operation time t1;
c) Check that the active power or reactive power of the relevant energy storage system
in the analog device shall change accordingly, and record the change time t2;
d) Calculate and record the power adjustment response time Δt = t2 t1.
7.4.3 Test of automatic generation control (AGC)
The test of automatic generation control (AGC) shall be carried out in accordance with the
following steps:
a) Set the control level of the supervision and control system to “station level” and the
control mode to “automatic”;
b) On the supervision and control system, set the active power distribution strategy of
each energy storage system of the energy storage station;
c) Through the analog device, simulate the superior dispatching to issue active power
adjustment commands that exceed the adjustable range of the energy storage station,
and record the execution of the supervision and control system;
d) Through the analog device, simulate the superior dispatching to issue active power
adjustment commands within the adjustable range of the energy storage station;
e) Record the output value of active power of the energy storage station and the power
distribution of each energy storage system in the supervision and control system.
7.4.4 Test of automatic voltage control (AVC)
The test of automatic voltage control (AVC) shall be carried out in accordance with the
following steps:
a) Set the control level of the supervision and control system to “station level” and the
control mode to “automatic”;
b) On the supervision and control system, set the reactive power distribution strategy of
each energy storage system of the energy storage station;
c) Through the analog device, simulate the superior dispatching to issue reactive power
adjustment commands that exceed the adjustable range of the energy storage station,
and record the execution of the supervision and control system;
d) Through the analog device, simulate the superior dispatching to issue reactive power
adjustment commands within the adjustable range of the energy storage station;
e) Record the output value of reactive power of the energy storage station and the power
distribution of each energy storage system in the supervision and control system.
7.4.5 Test of operation mode setting
The test of operation mode setting shall be carried out in accordance with the following steps:
a) Select one of the energy storage station operation modes listed in 6.3.4, and set the
energy storage station to operate in this mode on the supervision and control system
interface;
b) Through the analog device, simulate the superior dispatching to issue power
commands;
c) Record the supervision and control system receiving and issuing power commands;
d) Successively select all the operation modes of the energy storage station listed in 6.3.4,
and repeat b) and c); record the supervision and control system receiving and issuing
power commands in different operation modes.
7.4.6 Test of prevention of mis-operation locking
The test of prevention of mis-operation locking shall be carried out in accordance with the
following steps:
The test of alarm response shall be carried out in accordance with the following steps:
a) Through the analog device, trigger the alarm event in Appendix C, and record the
trigger time t1;
b) Record the alarm information forwarded by the supervision and control system and
the corresponding alarm time t2;
c) Calculate and record the alarm response time Δt = t2 t1;
d) In accordance with a) ~ c), successively test the Level-1, Level-2 and Level-3 alarm
events in 6.4.
7.5.2 Test of self-diagnosis
The test of self-diagnosis shall be carried out in accordance with the following steps:
a) By disconnecting physical connection or simulating communication interruption,
trigger the communication failure on the station level of the supervision and control
system;
b) Through the supervision and control interface, check and record the operating status
of all the equipment of the supervision and control system;
c) Record the retreat of the failure equipment and the corresponding redundant
equipment;
d) Record the relevant alarm events.
7.6 Test of Event Sequential Record and Post Disturbance Review
7.6.1 Test of event sequential record
The test of event sequential record shall be carried out in accordance with the following steps:
a) Through the analog device, within 10 s, trigger 100 action signals and alarm signals
of the battery management system, energy storage converter, circuit breaker, isolation
switch and transformer, etc.; record the time and content of each trigger;
b) Check the consistency between the event sequential record and event trigger in the
supervision and control system.
7.6.2 Test of post disturbance review
The test of post disturbance review shall be carried out in accordance with the following steps:
a) In the supervision and control system, set the post disturbance review duration to 60
s before the disturbance and 120 s after the disturbance;
b) After the supervision and control system operates for more than 60 s, through the
analog device, respectively issue three disturbance signals;
c) Start inversion of the disturbance, and play back the data records from 60 s before the
disturbance to 120 s after the disturbance;
d) Check and record the consistency between the data records of three disturbance
inversions and the operating data generated by the analog device in the disturbance.
7.7 Communication Test
7.7.1 Test of telecontrol communication
The test of telecontrol communication shall be carried out in accordance with the following
steps:
a) In accordance with the downlink information point table of superior dispatching,
through the analog device, simulate the superior dispatching to issue control and
adjustment commands;
b) Record the commands received by the supervision and control system, and check the
consistency;
c) In accordance with the uplink information point table of the supervision and control
system, through the supervision and control system, send uplink information to the
superior dispatching simulated by the analog device, and check the consistency;
d) Record the information received by the analog device, and check the consistency.
7.7.2 Test of in-station communication
The test of in-station communication shall be carried out in accordance with the following steps:
a) In accordance with the downlink information point table, through the station level of
the supervision and control system, send control and adjustment commands to the
local level equipment simulated by the analog device;
b) Record the commands received by the analog device, and check the consistency;
c) In accordance with the uplink information point table, through the analog device,
simulate the local level equipment to send equipment information to the station level
of the supervision and control system;
d) Record the information received by the supervision and control system, and check the
consistency.
7.7.3 Test of communication fault alarm
The test of communication fault alarm shall be carried out in accordance with the following
with system query data.
7.10 Test of System Time Synchronization
The test of system time synchronization shall be carried out in accordance with the following
steps:
a) Maintain normal communication connects between the time synchronization system
and the various servers and workstations of the supervision and control system, and
record the times of the time synchronization system and the various servers and
workstations, and check the consistency;
b) Disconnect the network communication between the time synchronization system and
other equipment;
c) Randomly adjust and record the times of the various servers and workstations;
d) Restore the network communication between the time synchronization system and
other equipment;
e) Record the times of the time synchronization system and the various servers and
workstations, and check the consistency.
7.11 Test of System Load Rate
The test of system load rate shall be carried out in accordance with the following steps:
a) Through the analog device, within 10 s, simulate and trigger the action signals and
alarm signals of the battery management system, energy storage converter, circuit
breaker, isolation switch and transformer, etc. for 100 times;
b) Record the peak CPU load rate and network load rate of the various servers and
workstations during the operation;
c) Repeat a) and b) twice, calculate and record the maximum value of three test results
as the test result of the CPU load rate and network load rate under the condition of
energy storage system failure;
d) Simulate the normal operation signal of the energy storage system for 10 min and
send up to the supervision and control system;
e) Record the peak CPU load rate and network load rate of the various servers and
workstations during the operation;
f) Repeat d) and e) twice, calculate and record the maximum value of three test results
as the test result of the CPU load rate and network load rate of the energy storage
system under normal conditions.
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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