Generator comprehensive protection measurement and control device is a generator protection equipment that integrates generator differential protection and generator backup protection. It is mainly used for the protection of hydro generators and steam turbine generators, with a capacity of no more than 1000kW and 3000kW respectively. This device is a practical generator comprehensive protection measurement and control equipment, which integrates differential protection, grounding protection and backup protection, and can be installed on the microcomputer protection device of the generator to achieve centralized control.
The function of the generator protection device is mainly to monitor and protect the generator to prevent the occurrence of failures and the expansion of accidents. Specifically, the generator protection device has the following functions:
1.Differential protection: When a short-circuit fault occurs inside the generator, the vector sum of the secondary current of the current transformer will not be equal to zero, triggering the differential relay action and removing the fault.
2.Grounding protection: Determine the grounding fault by detecting the voltage and current at the generator end and the neutral point.
3.Back-up protection: In the case of the failure of the main protection, the back-up protection can still remove the fault.
4.Automatic reclosing: After the fault is removed, the device will automatically reclose once to improve the stability of the system.
5.Fault recording: Record the voltage, current and other parameters when the fault occurs to help analyze the cause of the fault.
6.Fault alarm: When a fault occurs, the device will send out an audible and visual alarm to prompt the operator to deal with it in time.
7.Automatic detection: The device has a self-test function, which can monitor the operating status of the system in real time, and send out an alarm signal in time if there is a fault.
Please note that different models of generator protectors may have different functional characteristics. When selecting and using generator protection devices, please select and configure them according to the actual situation and needs.