WGHPA-800KVA-series Four-quadrant AC Power Supply

Description：

The WGHPA series of grid simulation sources cover a capacity range of 75 to 1100 kVA. It is modeled after the actual power grid and adopts the grid-connected feedback principle and the DSP real-time processing full-digital vector control technology to achieve bidirectional energy flow. Through the innovative DSP full-digital algorithm, it significantly reduces the size (by 1000 kg/m²), which is suitable for small spaces, high floors, experiments, etc.

Specifications：

SApplication fields:uitable for small spaces, high-rise buildings, laboratories and other occasions

Characteristics

1.The WGHPA series of grid simulation sources cover a capacity range of 75 to 1100 kVA. They are modeled after actual power grids and adopt the grid-connected feedback principle and the full-digital vector control technology with DSP real-time processing to achieve bidirectional energy flow. Through the innovative DSP full-digital algorithm, the weight is significantly reduced (less than 1000 kg/m²), which is suitable for small spaces, high floors, laboratories and other occasions.

2.The WGHPA series of grid simulation power supplies are equipped with four-quadrant function. Electrical energy can flow from this power supply to the application load or from the application load to the grid through this power supply. It has 100% energy feedback capability.

3.The WGHPA series four-quadrant AC analog power supplies are equipped with a redundant interface. They support multiple units of the same model to be connected in parallel through the connection of the redundant control cables. After being connected in parallel, they can automatically distribute the current evenly. Moreover, the switching between redundant mode and independent mode is supported in both local and remote modes, making the usage extremely flexible.

4.Compared with ordinary AC power supplies, the WGHPA series four-quadrant AC power supplies have a wider range of voltage and current output. To meet the 1.3 times higher current carrying capacity requirements for grid-connected equipment detection in the new energy industry, this power supply is designed with a maximum voltage of 2.27 times the rated voltage, thereby obtaining a larger output current.

5.It has the capabilities of high-voltage ride-through, low-voltage ride-through and continuous ride-through. The three-phase voltage and phase angle can be independently adjusted. It supports setting the initial phase angle, single-phase/two-phase conversion. Meanwhile, harmonics can be superimposed during the low-voltage transmission process, meeting the requirements of multiple international standards such as VDE-AR-N4105, UL1741 and G83.

6.With the ability to simulate RLC load, the power supply can simulate RLC load by adjusting the output parameters of the power supply, and the resistance value, inductance value and capacitance value of the RLC load can be adjusted by adjusting the power factor of the power supply to meet the off-grid test requirements of the energy storage converter

7.It can input under-voltage, over-voltage at input, over-voltage at output, and the set output voltage is used as the reference. It can simultaneously superimpose different frequencies of harmonics and inter-harmonics. The maximum superimposition frequency can reach 50th harmonic and inter-harmonics ranging from 5 to 2500Hz. At most, it can simultaneously superimpose 49 different frequencies of harmonics and 5 different frequencies of inter-harmonics. Meanwhile, it supports the function of importing and exporting harmonic injection data. Once the editing is completed, it can be called and used directly. The testing will be more efficient.

8. Built-in voltage flicker testing function. The short-term flicker value Pst1~10 can be set within the range. It supports one-click invocation. The Pst value range is 0.5~2, and the setting step is 0.5; when the Pst value range is 2~10, the setting step is 1, with an accuracy of ±0.1. After setting, the voltage flicker graph can be previewed.

9. Complete equipment protection mechanisms such as output overcurrent, output overload, IGBT overtemperature, and IGBT overcurrent. The electrical quantities for each device protection can be set through software. When the set protection conditions are reached, the equipment stops output and reports alarm information. In addition, the equipment has the ability to record operation information and supports querying of fault information and operation information within half a year. It has high reliability and convenient maintenance.

10.Equipped with a large 7-inch LCD screen, all data and status are clearly displayed at a glance. Coupled with clear and concise colors and configurations, it enables quick grasp of parameters such as voltage, current, active power, apparent power, power factor, and peak factor.

11.The programmable parameters such as set voltage, initial phase angle, frequency, voltage transformation mode (step/gradual), etc. can simulate various grid operation conditions. Meanwhile, through the import/export function of programmable data, up to 9999 sets of programmable data can be stored, facilitating one-click invocation for testing in the later stage. It complies with UL 1741/IEEE 1547/IEC61000-3-15/IEC62116/DIN-VDE0126-1-1/CGC standards, and has the ability to vary voltage, frequency and phase angle, including three-phase voltage sag and three-phase voltage unbalance state.

12.Equipped with RJ45/RS485 communication interfaces, it supports Modbus TCP and Modbus RTU protocols, and also has a complete set of remote operation software.