STEAM TURBINE GOVERNING SYSTEM FOR MAINTAINING SYNCHRONIZATION AND PROCESS FOR PERFORMING THE SAME

摘要

The invention relates to a steam turbine governing system for maintaining synchronization between an electrical grid and an electric generator, driven by a steam turbine, after the occurrence of a grid short circuit at the electrical grid. The governing system includes a governor adapted to control an arrangement of valves for regulating the steam flow in the steam turbine and means for measuring the voltage drop at the output of the electric generator. The governing system further includes means for measuring the electric power drop at the output of the electric generator. The governor is adapted to initiate operation of the arrangement of valves of the steam turbine in response to a voltage drop exceeding a predetermined value and to an electric power drop exceeding a predetermined value.

主权项

1. A steam turbine governing system for maintaining synchronization between an electrical grid and an electric generator after the occurrence of a grid short circuit at the electrical grid, said electric generator being driven by a steam turbine, said steam turbine governing system comprising:
a governor adapted to control an arrangement of valves for regulating the steam flow in the steam turbine; means for measuring the voltage drop at the output of the electric generator; and means for measuring the electric power drop at the output of the electric generator, wherein said governor is connected to said means for measuring the voltage drop and to said means for measuring the electric power drop and is adapted to initiate operation of the arrangement of valves in response to a voltage drop exceeding a predetermined value of voltage at the output of said electric generator and to an electric power drop exceeding a predetermined value of electric power at the output of said electric generator.