Westinghouse Electric Corporation

James J Shields

Robert A Yannone

Jack R Smith

John F Reuther

Richard S Heiser

Leonard H Burrows

Joseph A Pesavento

Richard J Hertz

A gas turbine power plant is provided with an industrial gas turbine which drives a generator coupled to a power system through a braker. The turbine-generator plant is operated by a hybrid control system having digital function capability during sequenced startup, synchronizing, load buildup and steady state load, and shutdown operations. The control system also contains monitoring and protective subsystems which function through all stages of operation, with redundancy and permissive features which maximize turbine availability.

Gas turbine power plant control apparatus including an ambient

A gas turbine power plant is provided with an industrial gas turbine which drives a generator coupled to a power system through a breaker. The turbine-generator plant is operated by a hybrid control system having digital function capability during sequenced startup, synchronizing, load buildup and steady state load, and shutdown operations. The control system also contains monitoring and protective subsystems which function through all stages of operation, with redundancy and permissive features which maximize turbine availability.

Gas turbine power plant control apparatus including a turbine load

Gas turbine power plant control apparatus having a multiple backup

Gas turbine power plant control apparatus including a temperature reset

A local maintenance controller permits continued power generation during maintenance or failure of a primary gas turbine control system by manually for maintenance purposes or automatically for failure purposes assuming turbine control to thereby insure continued operation. The local maintenance controller set forth is particularly suitable for use in conjunction with a computer implemented gas turbine control system. Transfer between the local maintenance controller and the primary control system is effected in a bumpless manner so that load swings are absent. However, if the turbine was operating at system reserve at the time of transfer, the local maintenance controller reduces the load to peak value until primary control is resumed. Operation at any other load at the time of transfer is maintained by the controller. Transfer back to primary control is also effected in a bumpless manner. Pushbuttons provided on the controller and associated circuitry permit an operator to change loads as necessary within the limits of a peak performance curve. In addition, the turbine can be started, synchronized and loaded as necessary by the operator.

Local maintenance controller for gas turbine power plants having a

Bearing temperature system failure detection apparatus suitable for use

Gas turbine power plant control apparatus including a speed/load hold

Gas turbine power plant control apparatus including automatic load pickup

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Philadelphia, PA, United States of America

James J Shields