Detail of Q/GDW 618-2011

Introduction of Q/GDW 618-2011

1 Scope This standard specifies the on-site test conditions, items, methods and procedures of PV power station connected to power grid. This standard is applicable to newly-built or expanded PV power station connected to 380 V or above power grid, including those connected with or without isolating transformers. It is not applicable to off-grid PV power station. 2 Normative References The following documents are essential for the application of the standard. For dated references, only the dated edition is applicable to the standard. For undated references, the latest edition (including all the amendments) applies. GB 2894 Safety Signs and Guidelines for the Use GB16179 Guidelines for the Use of Safety Signs GB/T 12325 Power quality-Deviation of Supply Voltage GB/T 12326 Power Quality-Voltage Fluctuation and Flickers GB/T 14549 Quality of Electric Energy Supply - Harmonics in Public Supply Network GB / T 15543 Power Quality- Three-Phase Voltage Unbalance GB / T 19862 General Requirements for Monitoring Equipment of Power Quality GB / T 21431 2008 Technical Specifications or Inspection of Lighting Protection System in Building GB / T 24337 Power Quality-Inter-harmonics in Public Supply Network DL/T 474.4 Implementation Guideline of On-site Insulation Test: AC Voltage Withstand Test QX/T 45-2007 Specifications for Surface Meteorological Observation YDT 1633 2007 Test Method for Electromagnetic Compatibility (EMC) On-site Q/GDW 617 2011 Technical Stipulation of PV Power Station Connected to Power Grid IEC 61000-4-30-2003(Electromagnetic Compatibility (EMC)-Part 4-30 Testing and Measurement Techniques-Power Quality 3 Terms and Definitions The following terms and definitions are applicable to the document. 3.1 Grid simulator A device capable of simulating the abnormal states of voltage and frequency of power grid. 3.2 Trip time Time between the occurrence of abnormal state and the VP power station’s suspension of power transmission to the power grid 3.3 Reconnect After the PV power plant escapes from the grid in case of abnormal system, connection is regained where the voltage and frequency of power grid is restores to normal states and after one adjustable time delay interval 3.4 PV power unit Minimum unit of PV power generation equipped with independent generation capacity 3.5 LVRT test device A test device capable of simulating low voltage drop curve of power grid 3.6 Anti-islanding test device A test device capable of simulating islanding 4 Test Conditions 4.1 Meteorological test condition Test Environment a) Environment temperature: -10℃~50℃ b) Environment humidity: no more than 90% 4.2 Conditions of tested PV power station Tested PV power station in grid-connection test shall be configured with: a) The installation and debugging are accomplished on hardware and software of PV power station according to the manufacturer instructions and relevant standards; b) The materials of PV power station's design, installation and debugging are complete and equipped with itemized debugging qualification report; c) The debugging of all the devices at PV power station is accomplished which is able to submit the general debugging scheme and equipped with general debugging qualification report; d) During the test, the tested PV power station shall arrange relevant staff to coordinate the test implementation; and local power grid companies, the start-up debugging committee or the owners and the principal equipment manufacturer of grid-connection shall arrange relevant staff to coordinate the test implementation according to actual conditions.

Contents of Q/GDW 618-2011

Foreword I 1 Scope 2 Normative References 3 Terms and Definitions 4 Test Conditions 5 Test Items, Methods and Procedures of PV Power Station 6 Selection of Test Time 7 Test Report Appendix A Test Record