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OUTAGE CALCULATOR FOR CONTROL SYSTEM

IP.com Disclosure Number: IPCOM000246498D
Publication Date: 2016-Jun-13
Document File: 3 page(s) / 27K

Publishing Venue

The IP.com Prior Art Database

Abstract

A system and method of tracking off time of a control system for a gas turbine power plant is disclosed. A time logger coupled to the control system senses its power on/off time and triggers the logging of power on/off time. When the power of the controller is turned off/on, the controller time synchronizes with the time source, and the time in stored in non-volatile random access memory. Previous stored time before turnoff is subtracted from the latest snapshot of time which gives the time for which the controller is switched off.

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BACKGROUND

The invention relates to gas turbine plant and in particular to system and method of tracking off time of a control system for a gas turbine power plant. The method has been developed in response to problems and needs in a gas turbine control system. The down time of the control system in present scenarios can only be logged manually. The invention presents a system and method for automating logging of control system power on/off time.

BRIEF DESCRIPTION OF DRAWINGS

Fig.1 illustrates a flowchart for the system and method of tracking off time of a control system.

DETAILED DESCRIPTION

The system and method of tracking off time of a control system includes time logger, time source and non-volatile random access memory (NVRAM). The time logger is used to determine the control system power off time. The time logger may run in application code and be stored in the non-volatile memory coupled to the controller.

The time logger initially senses the control system power on/off time and triggers the logging of power on/off time. The controller time is then stored into the non-volatile memory. This memory is constantly updated with respect to the controller power on/off time. Previous stored time before turnoff is subtracted from the latest snapshot of time which gives the time for which the controller is switched off.

Once the controller is turned off, the non-volatile random access memory (NVRAM) will have the time when the controller is lastly powered. When the controller is again powered up, the controller time synchronizes with the time source, and the very insta...