Recently, the off-grid energy storage system project of overseas farms undertaken by HNergy was successfully put into operation. The PCS provided by HNergy supports the frequency of 60Hz and runs off-grid to meet the application needs of the project.
Due to the fluctuation of high-power production load and the impact of natural disasters, the power grid of overseas farms is very prone to power outages, which bring serious impact and losses to production and life.
“On-Grid and Off-Grid System Technology“
When the power grid is electrified, it accepts EMS dispatch and uses the grid-connected operation mode to carry out peak shaving and valley filling for profit; When the power grid loses power unplanned, the system actively establishes an off-grid grid to provide uninterrupted power supply for important loads by switching from grid-connected operation mode to off-grid operation mode.
The established off-grid grid provides active and reactive power to the load in real time.
“Technical characteristics of on-grid and off-grid”
1. The grid-connected function can reverse the direct current of the battery into alternating current and transmit it to the power grid for peak shaving and valley filling or directly for AC load.
2. The charging function can rectify the alternating current of the power grid into direct current when the power grid price is cheap and charge the battery.
3. Off-grid function, when the power grid is unstable, the off-grid mode uses the electric energy in the battery to continue to supply power to the load, and this function can be used as a backup power supply.
4. Adopt two-way PCS module design, which can adjust the power size arbitrarily, flexibly expand, and is easy to adapt to the customer’s system.
5. Perfect battery protection and maintenance strategy, improve the service life of the battery, overcurrent, overtemperature, overvoltage, overload, short circuit, lightning protection, grounding and other protection,
6. Wide DC voltage range, voltage up to 1500V, control algorithm, constant current, constant voltage, constant power, etc., intelligent air cooling and stable operation.
7. Integrated design, easy to transport and save unnecessary hidden costs,
8. Support RS485, CAN communication mode, can receive BMS instructions in real time.
In response to the “Belt and Road” initiative, we are committed to the new energy energy storage microgrid system solutions for countries along the “Belt and Road” to provide stable power system guarantee for areas without electricity and weak electricity, which is a very meaningful project. Science and technology promote development, innovation leads the future, we still face many challenges in the context of carbon peaking and carbon neutrality, let us work together.