GB/T 42726-2023 English PDF (GB/T42726-2023)

GB/T 42726-2023: Specification of supervision and control system for electrochemical energy storage station
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GB/T 42726-2023
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,...