Low voltage ride through validation of the brand inverters were mixed

June 20 to 21, the National Network of Qinghai Electric Power Company, China Electric Power Research Institute, Qinghai Electric Power Company and other units jointly conducted a real low voltage ride through validation tests. The test is for Qinghai Haixi area network performance photovoltaic power plants and field verification.

Xinjiang and the Northwest 750 kV main grid interconnection switching station to the Qaidam Iqe substation side of the line becomes single phase of Qaidam test to become this test project. China EPRI monitoring at nearly 30, and along the line from Golmud to Ulan select four photovoltaic power plants, photovoltaic inverter 12 different types of species, as well as a variety of SVG and SVC reactive power compensation device, covering the country now mainstream models installed photovoltaic inverters and reactive power compensation device.

During the test, China EPRI field view of the three power stations - Golmud River photovoltaic power plants, photovoltaic power plants Golmud GD, Ulan Yellow photovoltaic power plants, other power plant according to claim the initiative to report off-grid situations. From reporter to grasp the situation, the inverter side, the sun is the best performing power modified sine wave inverter  inverter all its normal, there was no off-grid situations. In addition a number of brands have different levels of inverter off-grid situations arise, ranging from a few to as many as several dozen.

The test better grasp of the large-scale centralized PV power plant connected to the grid characteristics, inspection Northwest power grid PV power plant low voltage ride through technology applications and reactive power compensation device control strategy the actual results, but also for future photovoltaic and other scientific data accumulated .