High-power grid simulation device suitable for new energy converter experiment
A technology for power grid simulation and experiment, applied in the field of new energy power generation, which can solve the problems of short life of rectifier circuit and inverter circuit, etc.
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Embodiment 1
[0026] Such as figure 1 The one shown is a high-power grid simulation device suitable for new energy converter experiments, including an incoming line 1, a rectifier transformer 12, a grid simulation source 2, a backup PV source 3, a photovoltaic product interface 4, and a filter circuit (including The reactor module 6 and the capacitor module 7 can also be selectively short-circuit filter circuits through the isolating switches KM1 and KM2).
[0027] The incoming line 1, the rectifier transformer 12, and the power grid simulation source 2 are connected in sequence. The power grid simulation source 2 includes a rectifier as the PV source side and an inverter as the power grid side. The AC end of the interface 4 of the photovoltaic product to be tested is connected to the AC end of the grid side through a corresponding transformer 9 and a filter circuit. KM1, KM2). At the same time, the incoming line 1 is also connected to the DC terminal of the interface 4 of the photovolta...
specific Embodiment approach
[0029] (1) if figure 1 As shown, the circuit breakers Q1, Q2, Q6 and Q9 are closed, and this system can carry out all the experiments required by photovoltaic inverter products;
[0030] (2) In order to further improve the reliability and stability of the equipment and increase the service life of the grid side of the power grid simulation source 2, the MPPT operation test and temperature rise test of the photovoltaic inverter product can be closed at the circuit breakers Q1, Q2, Q7 and Q9 At this time, only the PV source side of the grid simulation source 2 is started, and the grid side is ready for standby;
[0031] (3) If the PV source side of the grid simulation source 2 fails, just close Q1, Q4, Q9 and Q6 to complete the fast switching, and use the backup PV source 3 to replace the PV source side of the grid simulation source 2 for photovoltaic inverter products All required experiments; similarly, at this time, the temperature rise experiment and MPPT operation experim...
Embodiment 2
[0033] Such as figure 2 The one shown is a high-power grid simulation device suitable for new energy converter experiments, including incoming line 1, rectifier transformer 12, grid simulation source 2, backup PV source 3, photovoltaic product interface 4, and wind power generation to be tested Product interface 5, filter circuit (including reactor module 6, capacitor module 7, and optional short-circuit filter circuit through isolation switches KM1 and KM2). figure 2 Among them, the left side of the interface 5 of the wind power generation product under test is used to connect the incoming line, and the right side is used to connect to the grid side of the grid simulation source 2 .
[0034] In this embodiment, the new energy power generation converter experiment high-power grid simulation device includes all the structures in embodiment 1, and on the basis of the structure of embodiment 1, the incoming line 1 is connected to the wind power generation product to be tested t...
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