GB/T 42322-2023 English PDF (GBT42322-2023)

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GB/T 42322-2023: Energy internet system -- Interconnection of active distribution network
GB/T 42322-2023
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 29.240.01
CCS F 10
Energy Internet System - Interconnection of Active
Distribution Network
ISSUED ON: MARCH 17, 2023
IMPLEMENTED ON: OCTOBER 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 General Requirements ... 6
5 Physical Interconnection of Active Distribution Network ... 7
5.1 Grid Structure ... 7
5.2 Interconnection with Distributed Resources ... 8
5.3 Interconnection with Microgrid ... 8
5.4 Interconnection with Electric Vehicle Charging and Battery Swap Infrastructure ... 9
5.5 Interconnection with Energy Storage ... 9
5.6 Interconnection with Users ... 10
6 Information Interconnection of Active Distribution Network ... 12
6.1 Information Interaction ... 12
6.2 Communication Mode ... 15
6.3 Security Protection ... 15
7 Cyber-Physical Fusion of Active Distribution Network ... 15
Appendix A (informative) Typical Interconnection Modes of AC and DC Distribution
Networks ... 17
Appendix B (informative) DC Side Grid Structure of Medium-voltage Distribution
Network ... 19
Bibliography ... 21
Energy Internet System - Interconnection of Active
Distribution Network
1 Scope
This document specifies the general requirements for the interconnection of active distribution
network, as well as the requirements for the physical interconnection, information
interconnection and cyber-physical fusion of active distribution network under the energy
internet system.
This document is applicable to the planning, design and operation control of the active
distribution network under the energy internet system.
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 14549 Quality of Electric Energy Supply - Harmonics in Public Supply Network
GB/T 15543 Power Quality - Three-phase Voltage Unbalance
GB/T 22239 Information Security Technology - Baseline for Classified Protection of
Cybersecurity
GB/T 24337 Power Quality - Interharmonics in Public Supply Network
GB/T 29328 Specific Configuration of Power Supply and Self-emergency Power Supply for
Important Power Users
GB/T 33589 Technical Requirements for Connecting Microgrid to Power System
GB/T 33593 Technical Requirements for Grid Connection of Distributed Resources
GB/T 36278 Technical Code for Electric Vehicle Charging / Battery Swap Infrastructure
Interconnecting to Distribution Network
GB/T 36547 Technical Rule for Electrochemical Energy Storage System Connected to Power
Grid
NOTE: 110 kV ~ 35 kV power grid is a high-voltage distribution network, 10 (20, 6) kV power
grid is a medium-voltage distribution network, and 220 / 380 V power grid is a low-voltage
distribution network.
3.3 active distribution network
Active distribution network is a distribution network that internally contains distributed power,
energy storage and demand response resources, and with the capabilities of flexible topology,
active control and operation management.
3.4 distributed resources
Distributed resources are the power supply that is connected to the power grid with a voltage
level of 35 kV and below, and located near the user, and mainly consumed locally at a voltage
level of 35 kV and below.
NOTE 1: including synchronous generator, asynchronous generator, converter and other types of
power supplies.
NOTE 2: including solar energy, natural gas, biomass energy, wind energy, water energy, hydrogen
energy, geothermal energy, ocean energy, comprehensive utilization of resources for
power generation (including coal-mine gas for power generation) and energy storage, etc.
[source: GB/T 33593-2017, 3.1, modified]
3.5 microgrid
Microgrid is a small-size power supply network composed of distributed power generation,
power load, monitoring, protection and automation devices (including energy storage devices
when necessary) and can basically achieve internal balance of electric power and energy.
NOTE: microgrid is divided into grid-connected microgrid and independent microgrid.
[source: GB/T 33589-2017, 3.2, modified]
3.6 cyber-physical systems
Cyber-physical systems are systems constructed by integrating advanced perception,
computation, communication, control and other information technologies and automatic control
technologies, so that humans, machines, objects, the environment, information and other
elements are mutually mapping, timely interacting and efficiently collaborating in the physical
space and cyberspace.
4 General Requirements
4.1 The active distribution network is an important constituent part of the energy internet system.
Its planning, design, operation control and information interaction shall be coordinated with the
architecture of the energy internet, so as to support the interconnection of energy and
information.
4.2 The planning and design of the active distribution network shall adhere to the concept of
user-oriented power supply reliability, so as to satisfy safe, efficient and flexible power
transmission and distribution.
4.3 The active distribution network shall satisfy the convenient and flexible access, and
consumption requirements of distributed resources, microgrid, electric vehicles, energy storage
and various types of users.
4.4 The active distribution network shall comprehensively utilize various flexible resources on
the power source side, the grid side and the load side, so as to implement the active operation
and management of the distribution network and enhance the efficiency level of energy
allocation.
4.5 The active distribution network shall realize the deep sharing and integration of information
with the energy internet system and satisfy the relevant requirements of information security
protection.
5 Physical Interconnection of Active Distribution Network
5.1 Grid Structure
5.1.1 The active distribution networks at all levels shall be mutually matching and supportive,
robust and well-organized, so as to support the safe and flexible operation of the distribution
network and the hierarchical and efficient consumption of distributed resources.
5.1.2 The grid structure of the same type of power supply area in the same region should be
unified. The grid structure design shall follow the principle of non-cross power supply, so as to
form relatively independent power supply areas. Each power supply area should contain a
certain number of distributed resources, energy storage and demand response resources.
5.1.3 The structure of the active distribution network of a high-reliability power supply area
shall realize the automatic isolation of faults, with the capability of network reconstruction, and
gradually develop the capability of fault self-recovery.
5.1.4 The AC grid and the DC grid can constitute an AC-DC hybrid distribution network
through flexible DC technology.
5.1.5 The interconnection of the AC-DC distribution network can adopt A...