公开(公告)号：US20180274391A1

公开(公告)日：2018-09-27

申请号：US15464955

申请日：2017-03-21

Applicant: General Electric Company

Inventor： George Vargese Mathai ,  Jeremy Andrew Williams ,  Joseph Klosinski ,  Sanji Ekanayake ,  William Fisher ,  Alston Scipio

IPC: F01K23/10 ,  F02C6/18 ,  H02K7/18 ,  F02C3/04 ,  F02C9/50

CPC classification number: F01K23/101 ,  F02C3/04 ,  F02C6/18 ,  F02C9/50 ,  F22G5/12 ,  H02K7/1823 ,  Y02E20/16

Abstract: Embodiments of systems and methods described in this disclosure are directed to operating a combined cycle power plant. In certain embodiments, systems and methods can be provided for a combined cycle power plant incorporating a control system that uses a holistic approach to continuously and automatically adjust a heat rate of the combined cycle power plant and achieve a desired efficiency. In accordance with one embodiment of the disclosure, the control system can be used to dynamically control various operations of the combined cycle power plant, including addressing of certain conflicting requirements such as avoiding generation of superheated steam in an attemperator while concurrently maintaining exhaust emissions within allowable regulatory limits and maintaining exhaust gas temperatures within allowable material capability limits. The use of such a control system allows for an increased turndown capability of the combined cycle power plant along with an improvement in a combined cycle heat rate of the combined cycle power plant.

公开(公告)号：US20180100442A1

公开(公告)日：2018-04-12

申请号：US15290273

申请日：2016-10-11

Applicant: General Electric Company

Inventor： George Vargese Mathai ,  Joseph Klosinski ,  Sanji Ekanayake ,  Alston Scipio

IPC: F02C9/52 ,  H02K7/18 ,  H02P9/04

CPC classification number: F02C9/52 ,  F02C9/18 ,  F02C9/54 ,  F04D27/0223 ,  F04D27/0246 ,  F04D27/0261 ,  F05D2270/3015 ,  H02K7/1823 ,  H02P9/04

Abstract: Systems and methods to control performance via control of compressor operating limit line (OLL) protection actions. According to an embodiment of the disclosure, a method of controlling a turbine in a power plant can be provided. The method may include receiving a selection of a desired performance parameter associated with an operational mode of a power plant; receiving a set of measured performance parameters at a current operating condition of a turbine associated with the power plant; receiving an operating limit line (OLL) of a compressor associated with the turbine; and receiving a compressor pressure ratio (CPR) at the current operating condition of the turbine. The method may further include: comparing the CPR to an operating limit pressure ratio on the OLL at the current operating condition of the turbine; based at least in part on the comparison, a difference between the CPR and the operating limit pressure ratio exceeding a predetermined threshold can be determined; and based at least in part on the difference between the CPR and the operating limit pressure ratio, the selection of the desired performance parameter, and the set of measured performance parameters, one or more response actions via a control system of the turbine can be implemented.