Power inverter, backup UPS backup power supply
EVS Power Inverter power supply is designed specifically for substations and power plants, used for power remote control, communication, monitoring, emergency lighting, etc. It can also provide uninterrupted power for AC lubrication pumps, AC fans, and water pumps in power plants.
Power inverter is a backup uninterruptible power supply. It mainly completes the inversion from DC to AC. Usually, it can be set as DC main or AC main according to the application scenario, and switched by static switch control.
Filtering section: The input filter is used to filter out noise from the DC power supply at the input end, obtaining a smooth DC and sending it to the inverter. The output filter filters out AC harmonics and interference from the output, making the output smoother.
Inverter section: Convert DC power to sinusoidal AC power.
Control part: Control the inverter power supply to follow the reference mains power and maintain the same phase and frequency as it, automatically adjust it, and make the power supply operate or protect according to the set protection value within the specified range.
Display section: LCD and LED status simulation panel are used to accurately reflect the device's operating status and fault information.
Switching section: Automatically switch between bypass, mains, and inverter output power sources.
Product Features
1. The DC terminal is designed with 220VDC, which can utilize the existing DC batteries in substations or communication base stations, saving investment and greatly extending standby time. Avoid duplicate investments.
2. Due to professional maintenance of the battery pack in the above environment, its lifespan can be greatly extended.
3. Equipped with RS232/RS485 communication interface, convenient for monitoring the working status of devices in the background.
4. Rack design for easy installation
5. Strong carrying capacity, able to adapt to a wider range of load demands.
Application of power inverter power supply
Power inverter power supply is a convenient power converter that can convert DC48V/DC125V/DC220V DC power into AC220V AC power that is the same as the mains power
Power inverters have a wide range of applications, including various types of transportation such as cars, ships, and aircraft. In the fields of solar and wind power generation, inverters play an irreplaceable role. The reliability of the power control system is the guarantee for the reliable and efficient operation of the power system and equipment, and the power control system must have a safe and reliable control power source. In order to ensure uninterrupted operation of substations such as backend machines, substation RTUs, communication equipment, etc. in the power system after AC power outages, UPS power supply is generally used as the main solution in engineering practices. However, UPS power supply has shortcomings such as small capacity, high price, high failure rate, and large maintenance volume. Therefore, in comprehensive automation substations, power sine wave inverter power supply can be used to replace conventional uninterruptible UPS power supply. Its advantages are as follows:
1. Reduced the operation and maintenance costs of the power inverter system
In the currently operating comprehensive automation substation, a background monitoring microcomputer is generally installed, and the communication equipment is mostly microwave and fiber optic machines. The working power supply of such monitoring and communication equipment is AC power, and uninterrupted power supply is required to meet the requirements of the four remote stations. Different equipment must be separately equipped with uninterruptible power supply (UPS) and battery packs. Installing an inverter power supply in the substation can directly utilize the large capacity battery of the DC power system used to provide AC power, saving investment costs compared to UPS power supply solutions, avoiding duplicate investment in battery packs, reducing maintenance workload, and lowering operating costs.
2. Improved the reliability of power inverter supply
The DC power supply system installed in the substation has high reliability and long service life. Therefore, a DC power+inverter solution is adopted, which utilizes the monitoring function of the DC power supply system and the communication function of the inverter to remotely and real-time monitor the operation status of the inverter power supply. This solves the problem of small battery capacity and lack of monitoring in conventional UPS power supplies, which easily leads to battery damage that cannot be detected in a timely manner. Due to the large capacity of the battery in the DC power supply system of the substation, the uninterrupted power supply time after the power grid is cut off is greatly extended, truly playing the role of a security power source and improving its power supply reliability.
3. Improved the safety of power inverter supply
The power inverter is a new generation of DC/AC power supply product, with an input of 220V DC and an output of 220V, 50Hz sine wave AC. The input and output terminals are completely isolated from the mains power, avoiding the impact of mains power on the load. It fully meets the requirements of substation RTUs, communication equipment, and microcomputers for working power supply, and is completely isolated from the mains power. It can also avoid power board burning accidents caused by overvoltage such as lightning, improving the safety of the load.
The ultra isolated output, strong anti-interference ability, and powerful communication function of the new generation DC/AC power inverter are adopted in rural comprehensive automation substations using a DC power+inverter scheme, which has good operational economy, reliability, and safety, truly realizing the monitoring requirements of unmanned operation for equipment working power supply.