Gas turbine power plant electrical system relay protection method and system

• Main Authors: ZHANG DANQING, LYU XIAOXIU, CHEN LUYAO, ZHANG QIAN, TU MENGYA, HOU XINPEI, LIU JIAXIU, HOU SUNING, HE XINLIN
• Format: Patent
• Language: Chinese; English
• Published: 14.11.2023
• Subjects: CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS; GENERATION

The gas turbine power plant electrical system relay protection method comprises the steps of obtaining historical data of a gas turbine power plant electrical system under a normal working condition, and establishing a gas turbine power plant electrical system model in combination with a neural network; fault conditions in different states and model parameter data before and after the fault conditions are simulated according to the gas turbine power plant electrical system model, and faults are processed; establishing a mapping table according to the fault processing method, the fault conditions in different states and the model parameter data before and after the corresponding fault conditions; according to the real-time data of the gas turbine power plant electrical system, the fault condition is judged, the fault processing method in the mapping table is called in real time, and relay protection is conducted on the gas turbine power plant electrical system. The method can quickly and accurately complete th