Detail of NB/T 33015-2014

Introduction of NB/T 33015-2014

1 Scope This standard specifies the principles and technical requirements for interconnecting the energy storage system, in which the electric energy is stored in electrochemical form, with the distribution network. This standard is applicable to the electrochemical energy storage system interconnecting with the distribution network whose voltage class is 10(20)kV or below; as for other types of energy storage systems interconnecting with the distribution network as well as those in the microgrid, the provisions of this standard may also be referred to. 2 Normative References The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. GB 2894 Safety Signs and Guideline for the Use GB/T 12325 Power Quality - Deviation of Supply Voltage GB/T 12326 Power Quality - Voltage Fluctuation and Flicker GB 14050 Types and Safety Technical Requirements of System Earthing 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 14598.9 Measuring Relays and Protection Equipment - Part 22-3: Electrical Disturbance Tests - Radiated Electromagnetic Field Immunity GB/T 14598.10 Measuring Relays and Protection Equipment - Part 22-4: Electrical Disturbance Tests - Electrical Fast Transient/Burst Immunity Test GB/T 14598.13 Electrical Relays - Part 22-1: Electrical Disturbance Tests for Measuring Relays and Protection Equipment - 1 MHz Burst Immunity Tests GB/T 14598.14 Measuring Relays and Protection Equipment - Part 22-2: Electrical Disturbance Tests - Electrostatic Discharge Tests GB/T 15543 Power Quality - Three-phase Voltage Unbalance GB/T 19862 General Requirements for Monitoring Equipment of Power Quality GB/T 24337 Power Quality - Interharmonics in Public Supply Network GB 50057 Design Code for Protection of Structures Against Lightning GB/T 50065 Code for Design of AC Electrical Installations Eathing DL/T 448 Technical Administrative Code of Electric Energy Metering Unit DL/T 584 Code for Setting of 3kV~110kV Relaying Protection Equipment DL/T 620 Overvoltage Protection and Insulation Coordination for AC Electrical Installations DL/T 634.5-101 Telecontrol Equipment and Systems - Part 5-101: Transmission Protocols - Companion Standard for Basic Telecontrol Tasks DL/T 634.5-104 Telecontrol Equipment and Systems - Part 5-104: Transmission Protocols - Network Access for IEC 60870-5-101 Using Standard Transport Profiles DL/T 645 Multi-function Watt-hour Meter Communication Protocol JB/T 3950 Automatic Accurate Synchronizers 3 Terms and Definitions For the purpose of this document, the following terms and definitions apply. 3.1 electrochemical energy storage system an equipment system which can carry out electric energy storage, conversion and releasing cyclically and controllably in an electrochemical way 3.2 converter an electrical equipment which is used to convert the voltage, frequency, phase, phase number of the power system as well as other characteristics of the capacity 3.3 point of interconnection for energy storage systems equipped with booster station, the point of interconnection is the bus or node on the high-voltage side of the booster station; for energy storage systems without booster station, it is the aggregation point of electric energy output 3.4 interconnection interface an integration of individual equipment or several equipment, including the interconnected parts between converter and distribution network as well as system access and control, relay protection and automatic safety device, automated communication device, measuring device, etc. The schematic diagram for the interconnection interface of electrochemical energy storage system and distribution network is as shown in Figure 1

Contents of NB/T 33015-2014

Foreword i 1 Scope 2 Normative References 3 Terms and Definitions 4 Basic Requirements 5 Power Quality 6 Power Control and Voltage Regulation 7 Abnormal Response of Power Grid 8 Switchover of Interconnection/ Disconnection and Charge/ Discharge 9 Automatic Protection and Safety Devices 10 Communication and Automatization 11 Electric Energy Measurement 12 Earthing and Safety Signs 13 Interconnection Testing