GB/T 36278-2018Technical code for electric vehicle charging/battery swap infrastructure interconnecting to distribution network (English PDF)

1 Scope

This Standard specifies the basic principles and technical requirements for the electric vehicle charging/battery swap infrastructure interconnecting to distribution network.

This Standard is applicable to the electric vehicle charging/battery swap infrastructure interconnecting to the power grid of 110kV and below.

2 Normative Reference

The following documents are essential to the application of this document. For the dated documents, only the versions with the dates indicated are applicable to this document; for the undated documents, only the latest version (including all the amendments) are applicable to this document.

GB/T 156 Standard Voltage

GB/T 12325 Power Quality - Deviation of Supply Voltage

GB/T 14285 Technical Code for Relaying Protection and Security Automatic Equipment

GB/T 14549 Quality of Electric Energy Supply - Harmonics in Public Supply Network

GB/T 15543 Power Quality - Admissible Three-Phase Voltage Unbalance Factor

GB/T 29317-2012 Terminology of Electric Vehicle Charging/Battery Swap Infrastructure

GB/Z 29328 Specific Configuration of Power Supply and Self-Emergency Power Supply for Important Power Users

GB 50053 Code for Design of 20kV & Under Electric Substation

5 Principles for Accessing Power Grid

5.3.1 The 220V power supply charging equipment shall be connected to the low-voltage public distribution box; while the 380V power supply charging equipment shall be connected to the low-voltage power distribution room through dedicated line.

5.3.2 Access to the charging/battery swap infrastructures of 10(20)kV power grid; for the capacity less than 4000(8000)kVA, they shall be accessed to the public power grid 10kV line or accessed to ring network cabinet, cable branch box, switch station, etc.; for the capacity greater than 4000(8000)kVA, the charging/battery swap infrastructures shall be accessed through dedicated line.

5.3.3 The charging/battery swap infrastructures accessing to 35kV, 110(66)kV power grid can access to the corresponding buses of the substation and switch station, or T-connect to the public power grid line.

5.3.4 The schematic diagram of the different voltage level accessed charging/ battery swap infrastructures to the power grid can refer to Appendix A.

6 Equipment Selection

7 Reactive Power Compensation

7.1 The reactive power compensation for access the charging/ battery swap infrastructures to the power grid shall be planned and constructed as per the principles of "synchronous design, synchronous construction, and synchronous commissioning".

7.2 The reactive power compensation device of the charging/ battery swap infrastructures shall be configured in the principles of local balance and easy adjustment of voltage.

7.3 For the charging/ battery swap infrastructures power supply voltage level of 10kV and above, its power factor during the peak load period shall be no less than 0.95; for the charging/ battery swap infrastructures with power supply voltage level of 380V and below, its power factor during the peak load period shall be no less than 0.9; those that don't meet the requirements shall be installed local reactive power compensation device.

7.4 The reactive power compensation device of the charging/ battery swap infrastructures shall have the ability to automatically adjust with the switching of the charging device.

8 Protection and Measurement