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GB/T 43025-2023Technical guidelines for power supply schemes of users connected to power grid (English PDF)

用户接入电网供电方案技术导则

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

September 7, 2023

Implementation date

September 7, 2023

Scope

GB/T 43025-2023 is the English-translated version of 用户接入电网供电方案技术导则.

This document specifies what a power supply scheme for a user connecting to the grid must contain: the basic content, the load capacity and the supply voltage level, the main electrical connection and the modes of operation, the metering points and metering method, power quality and reactive power compensation, the user's transformation and distribution installations, and relay protection and automation.

The document applies to the drawing up of power supply schemes for users of every kind connecting to public grids at 220 kV or 330 kV and below.

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Document preview — GB/T 43025-2023

National Standard of the People's Republic of China

ICS: 29.020
Classification: F 04

Issued by: State Administration for Market Regulation; Standardization Administration of the PRC

Preface
1 Scope
2 Normative reference documents
3 Terms and Definitions
4 Basic requirements for power supply scheme
5 Electricity user classification
6 Basic content of power supply solution
6.1 High voltage users
6.2 Low voltage non-residential users
6.3 Residential users
6.4 Temporary power supply users
7 Power capacity and power supply voltage level
7.1 Determination of power capacity
7.2 Rated voltage
7.3 General requirements for determining supply voltage levels
7.4 High voltage power supply
7.5 Low voltage power supply
7.6 Residential quarters
7.7 Distributed power/microgrid
7.8 Charging and swapping facilities
8 Electrical main wiring and operation mode
8.1 General requirements
8.2 Electrical main wiring
8.3 Important user operating methods
8.4 Transformer selection
9 Electric energy measurement points and measurement methods
9.1 Electric energy metering point
9.2 Electric energy measurement method
9.3 Configuration of electric energy metering device
9.4 Wiring method of electric energy metering device
9.5 Configuration of power consumption information collection terminal
10 Power quality and reactive power compensation
10.1 Interfering users access the power grid
10.2 Power quality
10.3 Reactive power compensation configuration
10.4 Distributed power sources and microgrids
11 User power transformation (distribution) facilities
11.1 General rules for site selection
11.2 Other relevant regulations for substations of 35kV and above
11.3 Other relevant regulations for substations (stations) of 20kV and below
12 Relay protection and automation
12.1 Basic requirements for relay protection settings
12.2 Requirements for backup power automatic input device
12.3 Scheduling automation and communication requirements
13 Other requirements
Appendix A (informative) Power supply plan template
A.1 High-voltage user power supply solution
A.2 Low-voltage user power supply solution
A.3 Distributed power grid connection scheme
A.4 Power supply scheme for electric vehicle charging and swapping facilities

Foreword

This document complies with the regulations of GB/T 1.1-2020 "Standardization Work Guidelines Part 1: Structure and Drafting Rules of Standardization Documents" Custom drafting.

1 Scope

This document stipulates the basic contents of the power supply plan for users to access the power grid, power consumption capacity and power supply voltage level, electrical main wiring and operation methods.

Type, electric energy measurement points and measurement methods, power quality and reactive power compensation, user power transformation (distribution) facilities, relay protection and automation and other requirements.

This document is applicable to the formulation of power supply plans for all types of users to access public power grids of 220 (330) kV and below.

2 Normative reference documents

The contents of the following documents constitute essential provisions of this document through normative references in the text. Among them, the dated quotations For undated referenced documents, only the version corresponding to that date applies to this document; for undated referenced documents, the latest version (including all amendments) applies to this document.

GB/T 12325 Power quality supply voltage deviation

GB/T 12326 Power quality voltage fluctuation and flicker

GB/T 14285 Technical regulations for relay protection and safety automatic devices

GB/T 14549 Power Quality Public Grid Harmonics

GB/T 15543 Power quality three-phase voltage imbalance

GB/T 15945 Power quality power system frequency deviation

GB/T 16934 Electric energy metering cabinet

GB/T 24337 Power quality harmonics between public grids

GB/T 29316 Technical requirements for power quality of electric vehicle charging and swapping facilities

GB/T 29328 Technical specifications for power supply and self-prepared emergency power supply configuration for important power users

GB/T 33589 Technical regulations for microgrid access to power systems

GB/T 33593 Technical requirements for distributed power grid connection

GB/T 36040 Specifications for power configuration in residential areas

GB/T 37138 Implementation Guide for Security Level Protection of Electric Power Information Systems

GB 50016 Fire Protection Code for Building Design

GB 50053 Design specifications for substations 20kV and below

GB 50058 Design Code for Electrical Equipment in Explosive Hazardous Environments

GB 50059 35kV~110kV substation design specifications

GB 50260 Code for seismic design of electric power facilities

DL/T 448 Technical Management Regulations for Electric Energy Metering Devices

DL/T 825 Rules for installation and wiring of electric energy metering devices

3 Terms and definitions

The following terms and definitions apply to this document.

3.1 Power supply scheme

A specific power supply plan that is suitable for users to access the power grid and meet their power needs.

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 24 pages — is available in the English PDF.

Referenced standards

Normative references

GB 50053 · DL/T 825

Cited by

GB/T 45418-2025Technical requirements for AC distribution networks of 10 kV and below

Similar standards

GB/T 13869-2026|GB/T 24114.2-2026|GB/T 33589-2026|GB/T 33592-2026|GB/T 33593-2026|GB/T 33603-2026

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