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.

公开(公告)号：US20170167304A1

公开(公告)日：2017-06-15

申请号：US14969157

申请日：2015-12-15

Applicant: General Electric Company

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

IPC: F01K23/10 ,  F01K17/02 ,  F01K15/00 ,  F02C3/04 ,  F01K7/16

Abstract: A power plant includes an exhaust duct that receives an exhaust gas from an outlet of the turbine outlet and an ejector having a primary inlet fluidly coupled to a compressor extraction port. The ejector receives a stream of compressed air from the compressor via the compressor extraction port. The power plant further includes a static mixer having a primary inlet fluidly coupled to a turbine extraction port, a secondary inlet fluidly coupled to an outlet of the ejector and an outlet that is in fluid communication with the exhaust duct. A stream of combustion gas flows from a hot gas path of the turbine and into the inlet of the static mixer via the turbine extraction port. The static mixer receives a stream of cooled compressed air from the ejector to cool the stream of combustion gas upstream from the exhaust duct. The cooled combustion gas mixes with the exhaust gas within the exhaust duct to provide a heated exhaust gas mixture to a heat exchanger.

公开(公告)号：US20160273396A1

公开(公告)日：2016-09-22

申请号：US14662785

申请日：2015-03-19

Applicant: General Electric Company

Inventor： Sanji Ekanayake ,  William Theadore Fisher ,  Joseph Philip Klosinski ,  Mark Stefan Maier ,  George Vargese Mathai ,  Ryan Eric Obenhoff ,  Robert Michael Orenstein ,  Alston Ilford Scipio ,  Gordon Raymond Smith

IPC: F01K23/10 ,  F02C7/18 ,  F02C6/00

CPC classification number: F01K23/10 ,  F01D13/003 ,  F01K5/00 ,  F02C3/13 ,  F02C6/00 ,  F02C6/02 ,  F02C6/08 ,  F02C6/18 ,  F02C7/185 ,  F05D2240/40 ,  F05D2250/511 ,  F05D2260/213 ,  Y02E20/16

Abstract: A power generation system includes: a first gas turbine system including a first turbine component, a first integral compressor and a first combustor to which air from the first integral compressor and fuel are supplied, the first combustor arranged to supply hot combustion gases to the first turbine component, and the first integral compressor having a flow capacity greater than an intake capacity of the first combustor and/or the first gas turbine component, creating an excess air flow. A second gas turbine system may include similar components to the first except but without excess capacity in its compressor. A control valve system controls flow of the excess air flow from the first gas turbine system to the second gas turbine system. A heat exchanger may be coupled to the excess air flow path for exchanging heat with the excess air flow.

Abstract translation: 发电系统包括：第一燃气轮机系统，其包括第一涡轮机部件，第一整体式压缩机和第一燃烧器，来自第一整体式压缩机和燃料的空气供应到第一燃烧器，第一燃烧器布置成将热燃烧气体供应到第一 涡轮机部件和第一整体式压缩机，其流量大于第一燃烧器和/或第一燃气轮机部件的进气容量，产生过量的气流。 第二燃气轮机系统可以包括与第一燃气涡轮机系统相似的组件，除了其压缩机中没有过剩的容量。 控制阀系统控制从第一燃气轮机系统到第二燃气轮机系统的多余空气流的流动。 热交换器可以连接到过量的空气流动路径上，以与多余的空气流交换热量。

公开(公告)号：US20160273395A1

公开(公告)日：2016-09-22

申请号：US14662780

申请日：2015-03-19

Applicant: General Electric Company

Inventor： Sanji Ekanayake ,  Dale Joel Davis ,  George Vargese Mathai ,  Julio Enrique Mestroni ,  Alston Ilford Scipio

IPC: F01K23/10 ,  F02C6/00

CPC classification number: F01K23/10 ,  F02C6/00 ,  F02C6/08 ,  F02C7/18 ,  F02C9/18 ,  F05D2260/212 ,  Y02E20/16

Abstract: A power generation system includes: a first gas turbine system including a first turbine component, a first integral compressor and a first combustor to which air from the first integral compressor and fuel are supplied, the first combustor arranged to supply hot combustion gases to the first turbine component, and the first integral compressor having a flow capacity greater than an intake capacity of the first combustor and/or the first turbine component, creating an excess air flow. A second gas turbine system may include similar components to the first except but without excess capacity in its compressor. A control valve system controls flow of the excess air flow from the first gas turbine system to the second gas turbine system. A cooling fluid injector may be coupled to the excess air flow path for injecting a cooling fluid such as water or steam into the excess air flow.

Abstract translation: 发电系统包括：第一燃气轮机系统，其包括第一涡轮机部件，第一整体式压缩机和第一燃烧器，来自第一整体式压缩机和燃料的空气供应到第一燃烧器，第一燃烧器布置成将热燃烧气体供应到第一 涡轮机部件和第一整体式压缩机，其流量大于第一燃烧器和/或第一涡轮机部件的进气容量，产生过量的气流。 第二燃气轮机系统可以包括与第一燃气涡轮机系统相似的组件，除了其压缩机中没有过剩的容量。 控制阀系统控制从第一燃气轮机系统到第二燃气轮机系统的多余空气流的流动。 冷却流体注射器可以连接到过量的空气流动路径，用于将诸如水或蒸汽的冷却流体注入到过量空气流中。