1 Scope
This standard specifies the general principles and technical requirements to be observed for connecting photovoltaic power system to power network.
This standard is applicable to newly-built, renovated and extended photovoltaic power systems connected to power network through 380V voltage class and connected to consumer side through 10(6)kV voltage class.
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/T 14549 Quality of Electric Energy Supply - Harmonics in Public Supply Network
GB/T 15543 Power Quality - Three-phase Voltage Unbalance
GB/T 16895.32 Electrical Installations of Buildings - Part 7-712: Requirements for Special Installations or Locations - Solar Photovoltaic (PV) Power Supply Systems
GB/T 17215.322 Electricity Metering Equipment (a.c.) - Particular Requirements - Part 22: Static Meters for Active Energy (Classes 0.2S and 0.5S)
GB/T 19862 General Requirements for Monitoring Equipment of Power Quality
GB/T 24337 Power Quality - Interharmonics in Public Supply Network
DL/T 448 Technical Administrative Code of Electric Energy Metering Unit
DL/T 614 Multifunction Electricity Metering Equipment (A.C.)
DL/T 645 Multi-function Watt-hour Meter Communication Protocol
3 Terms and Definitions
For the purpose of this document, the following terms and definitions apply.
3.1
photovoltaic (PV) power system
power generation system converting solar radiation energy to electric energy directly by utilizing the photovoltaic effect of photovoltaic cell
3.2
inverter
equipment converting direct current into alternating current
Foreword i
1 Scope
2 Normative References
3 Terms and Definitions
4 Reactive Capability and Voltage Regulation
5 Start-up
6 Operation Adaptability
6.1 Voltage Range
6.2 Power Quality Range
6.3 Frequency Range
7 Power Quality
7.1 Basic Requirements
7.2 Voltage Deviation
7.3 Voltage Fluctuation and Flicker
7.4 Harmonic
7.5 Voltage Unbalance
7.6 DC Component
8 Safety and Protection
8.1 Basic Requirements
8.2 Low/high Voltage Protection
8.3 Frequency Protection
8.4 Anti-islanding Protection
8.5 Reverse Power Protection
8.6 Interconnection Recovery
9 General Technical Requirements
9.1 Grounding
9.2 Electromagnetic Compatibility
9.3 Voltage Withstand Requirement
9.4 Safety Signs
10 Electric Energy Metering
11 Communication and Signal
11.1 Basic Requirements
11.2 Normal Operation Signal
12 Interconnection Testing
12.1 Basic Requirements
12.2 Testing Content
Annex A (Informative) Legends of Points of Interconnection
