Huawei smart PV solutions: success through the crossing, grid frequency disturbances and low voltage power quality test

Polaris solar PV net news: in August 2014, in Qinghai Gonghe 200MW photovoltaic grid-connected power station by the tests, the industry-leading grid by means of adaptive technology, Huawei smart PV solutions became a success by MW low frequency disturbance test voltage across test, and test for power quality grid connected three performance tests. Up to now, Huawei core of smart PV solution—smart SUN2000 PV inverters are only a test field complete-MW units at the plant and pass the crossing, grid frequency disturbances and low voltage power quality grid connected three standard tests of string inverters.



This test by a domestic authority national energy solar-electric power development (experimental) in Center and Qinghai provincial electric power Research Institute to implement, strictly in accordance with State grid GB/T19964-2012 the regulations on photovoltaic power stations connected to the power system technology and Q/GDW617-2011 of the technical requirements of PV power grid standards for testing. And in this test for the first time on multiple machines in parallel inverter inverter PV Unit consisting of (for a total of 40 inverters, 1MW) were tested, and machine with such a large number of PV modules for lvrt testing is the first time in the country. Meanwhile, Huawei tests Huawei shows the success of inverter inverters with very high network security features, fully adapted to the more demanding network environment, ensure power supply safety and reliability.

In Qinghai province PV station for of low voltage through test in the, was random sampling selected of inverse variable power unit low voltage through test in the, by Huawei inverse variable device constitute of inverse variable power unit smooth completed in three relative said fault and not symmetric fault workers condition Xia of low voltage through test, in all test points of voltage fell and recovery during are can not interrupted grid run. In grid frequency disturbance test, the PV grid-connected inverter power units being measured with frequency signals for correct operation, have very good rate-adaptive, meeting State grid grid requirements. Meanwhile, in the measurement of power quality harmonic, harmonics of inverter power units being measured indicators are within safety range, has good harmonic adaptability. By means of this site followed by Huawei-SUN2000 string inverter parallel inverter for grid-connected power unit performance testing illustrates Huawei inverter with reliable quality, stable performance, able to guarantee the quality of grid-connected PV power station security and grid-connected.

Company through innovative algorithms and intelligent inverter Hass developed chip technology, use of intelligent controller for high-speed processing capability, higher sampling frequency, control and control advantages, using advanced algorithm for harmonic suppression of patent active response to network changes. Successful completion of this test proves smart PV solution of Huawei already has in the power quality industry-leading levels.

Original title: Huawei smart PV solutions: success through the crossing, grid frequency disturbances and low voltage power quality test

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