METHOD AND SYSTEM FOR DETECTION OF ELECTRICALLY INSULATED OPERATING MODE AND FOR SWITCHING OVER TO THIS METHOD Russian patent published in 2011 - IPC F02C1/00 

FIELD: engines and pumps.

SUBSTANCE: control method of fuel supply during transient process for fuel supply circuits for many connected gas turbines is proposed. It consists in the fact that event of occurrence of transient process in electrical network of power system is detected based on availability at least of one of the following factors: quick change of fuel supply to gas turbine and acceleration of turbine shaft rotation. After event of occurrence of transient process in electrical network of power system is detected, to the gas turbine control device there supplied is command to switch over the gas turbine at least to one intermediate load, and ratio of fuel mixture components is controlled in combustion chamber so that stability in combustion chamber is maintained during event of occurrence of transient process in electrical network of power system. Pre-set signal of the required load in insulated operating mode is used for proportional distribution of common required load in insulated operating mode between connected gas turbine generators.

EFFECT: invention will allow providing local electric loads for auxiliary needs of thermal power station during disconnection from electrical network of power system.

10 cl, 33 dwg