A power plant is a special production enterprise with a high degree of automation, and the automated production equipment depends on the safe and stable operation of the power supply system. In modern power plants, the DCS control system of large-capacity unit generators, including various thermal automatic devices, such as assembly instruments for automatic regulation, turbine electro-hydraulic digital regulators, boiler interlocking and safety monitoring system FSSS, turbine supervisory instrumentation (TSI), co-ordinated control system (CCS), etc., all require a reliable power supply, which should not be interrupted regardless of the interruption or grid failure of the power supply in the unit itself. The power supply is required to be uninterrupted no matter when the unit itself is interrupted by the plant power or when the power grid is faulty, so it is required that there is not only an accident security power supply in the large-capacity unit that can make the unit shut down safely, but also an AC non-stop power supply to provide uninterrupted power supply for the control and monitoring devices as well as for the post-accident state parameter recording devices.

Solution:

1. DCS system power protection programme:

EverExceed's PowerChampion series UPS uses 1+1 redundant power supply system and advanced technology to manufacture industrial-grade AC protection power supply, flexible and customised to fully meet the requirements of power DCS systems and other loads on the reliability of power supply.

Advantages:

(1) The professional UPS tailored for the power industry, adapted to the harsh grid environment within the power industry. Not only meets the load requirements of the power industry, but also allows users to not have to worry about the three-phase imbalance of the load.

(2) The 1+1 redundant parallel connection working mode allows the reliable power supply system to add another safety lock to meet the extreme needs of power industry users for UPS high reliability index.

(3) Make full use of the 220V/110V high-capacity battery packs in the power industry, which can maximise the backup time of the UPS and save the installation space of the battery pack and the preliminary investment.

(4) Optional bypass isolation transformer, input and output to achieve complete isolation, and can ensure that the output of the zero-ground voltage <1V.

(5) Abundant dry contact monitoring signals, can be integrated into the plant's own DCS monitoring system; Timely reporting of problems facilitates real-time monitoring of the UPS by the duty officer.