Open AccessAn analysis of generator trip caused by mistransmitting high temperature signal from excitation transformer
Author(s) -
Zhunli Qian
Publication year - 2020
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/508/1/012027
Subject(s) - excitation , thyristor , transformer , electrical engineering , generator (circuit theory) , ac power , shunt generator , engineering , voltage , power (physics) , permanent magnet synchronous generator , physics , quantum mechanics
The excitation transformer is a device that specifically provides three-phase AC excitation power for the generator excitation system. The excitation system converts the three-phase power to the generator rotor DC power through the thyristor to form the generator excitation magnetic field, which is adjusted by the excitation system thyristor trigger angle, to achieve the purpose of adjusting the motor terminal voltage and reactive power. This article analyzes an accident in which the excitation transformer high temperature signal is erroneously caused to cause the unit to trip. The unplanned shutdown accident is specifically analyzed from the aspects of on-site situation investigation, cause analysis, main problems exposed, treatment and preventive measures.