NARI DGT801A generator protection device

NARI DGT801A generator protection device

DGT801U series digital generator transformer unit protection device, applicable to capacity of 1200MW and below, voltage class of 1000KV and below
Generator transformer unit protection of steam turbine unit, gas turbine unit, nuclear power unit and water turbine unit with various capacities and various wiring modes, and meet
Power plant electrical monitoring automation system requirements.
DGT801U-B (or C, D, E) device can complete several main protections, several abnormal operation protections and backup protections, and its protection functions can be as required
Flexible selection is required. DGT801U-F (or E) device can provide special non electricity protection for the unit. The DGT801U-D device also has the function of protection, measurement and control.
For the dual (i.e. full duplex) configuration requirements of large and medium-sized units as required by the Countermeasures, if each set of protection is separated from each other by one layer
DGT801U-B (or C) device, and reasonably configure the protection function according to the requirements of the relay protection Code (see the protection configuration chapter for details)
The main protection and backup protection in the set protection are not only complete in variety, but also independent of each other. They really play the role that the main protection and backup protection should play
The protection device can realize the independent operation required by the Countermeasures, and the reliability can reach N-1 (the concept of N-1 refers to that the protection device, for some reason
In case of failure, the unit still has main protection and backup protection and can continue to operate). Double sets of protection configured according to this requirement, double
At the same time, the reliability is very high, reaching N-2. It can greatly meet the requirements of the Measures for Prevention of Protection after the realization of double set protection
Requirements for system accidents caused by device failure.

1 Application scope of DGT801U-B
DGT801U-B device is the main rear protection integrated device, and its hardware resource configuration is rich. The single-layer device can complete the capacity of 1200MW and below
All protection functions of large and medium-sized units. The combination of two sets of such devices can form a more economical configuration of the unit with dual requirements
During operation, its reliability meets the requirements of Code for relay protection.
1.2.2 Application scope of DGT801U-C
DGT801U-C device, with moderate hardware resources, is suitable for large, medium and small generator transformer protection.
1.2.3 Application scope of DGT801U-D
DGT801U-D device, with simple hardware resources, is generally suitable for small generator transformer protection, and has the function of protection, measurement and control.
1.2.4 Application scope of DGT801U-E
DGT801U-E device can be specially used for non electric quantity protection of units requiring separate cabinet, and also for electrical quantity protection of units.
1.2.5 Application scope of DGT801U-F
DGT801U-F device is specially used for non electricity protection of units requiring separate cabinet.