>Product Overview

ETH series AC and DC integrated uninterruptible power supply system is the third generation of intelligent integrated power supply system implemented according to the characteristics of intelligent substation. The system fully integrates the station power supply: the station AC, DC, inverter, and communication power supply are uniformly designed, and the communication network of each subsystem of the station power supply is networked through the integrated monitoring module, so as to realize the sharing of station power supply information and establish a digital power supply software platform; Through the intelligent modularization of the power switch for the station, the centralized function is decentralized, and there is no secondary wiring outside the module, no cross-screen secondary cable, and an intelligent power supply hardware platform is established. The integrated monitoring module communicates with the host computer system through the Ethernet interface and IEC61850 protocol, making the station power supply system an open system.

>Scope of Application

◇Digital substation, intelligent substation;

◇Ordinary 10KV~1000KV substations of various voltage levels that require a high degree of automation.

>Features

◇AC and DC integrated uninterruptible power supply technology for electric power and communication refers to a comprehensive technology based on excellent power conversion technology, digital control technology, high-frequency switching conversion technology, pulse width modulation technology, electromagnetic compatibility technology, redundant parallel technology, intelligent charging and discharging technology, network technology, drive technology and new process technology.

◇The DC operating power supply and AC uninterruptible power supply in the integrated device share a set of batteries, and the charger operating the power supply is used to supply power to the regular load and battery pack including UPS, DC/DC power supply, etc. In the event of an AC power failure, the battery will continuously supply power to the regular load and UPS and other loads;

◇Intelligent modularization of switches: switches, sensors, and intelligent circuits are integrated in one chassis, and secondary lines such as acquisition, switching input, switching output, and control are solved in the chassis;

◇Remote monitoring of DC operating power supply and AC uninterruptible power supply can be realized through the communication interface of the centralized monitor, the communication interface is reduced, and the system is simplified; No shutdown or interruption of AC output when load is short-circuited:

◇Isolation transformers that meet the requirements of the power system are configured between UPS, inverter power supply, DC/DC power supply and DC operating power supply to prevent system accidents caused by grounding;

◇The backfill ripple voltage of the DC bus is limited, so that the system meets and meets the safety specifications of the power system.

>How it Works

The two mains power supply through the automatic switching device to supply power to the UPS and rectifier module. The rectifier module converts the input AC into DC DC, charges the battery and supplies power to the closing bus (bus) load, and the closing bus supplies power to the control bus (bus) load after passing through the step-down module. And the DC input end of the UPS and the input end of the DC/DC conversion power supply are directly hung on the closing bus end, and the output 220VAC and 48VDC are respectively supplied to the AC load and the communication load. The integrated system is a complete set of equipment that combines DC power supply, AC power supply (UPS), power inverter power supply (INV), and DC conversion power supply (DC/DC) for communication, and shares the battery pack of DC power supply and monitors it in a unified manner.