公开(公告)号：US20150000279A1

公开(公告)日：2015-01-01

申请号：US14488344

申请日：2014-09-17

Applicant: ALSTOM Technology Ltd

Inventor： Wolfgang Franz Dietrich MOHR ,  Hamid OLIA ,  Miguel Angel CARRILLO RUBIO ,  Juergen REINHARD

IPC: F01K13/02 ,  F01K9/00

CPC classification number: F01K13/02 ,  F01D19/00 ,  F01D21/00 ,  F01K9/003 ,  F01K9/023 ,  F01K23/10 ,  Y02E20/16

Abstract: The invention relates to a method for operating a steam power plant, particularly a combined cycle power plant, which includes a gas turbine an a steam/water cycle with a heat recovery steam generator, through which the exhaust gases of the gas turbine flow, a water-cooled condenser, a feedwater pump and a steam turbine. A cooling water pump is provided for pumping cooling water through said water-cooled condenser. Evacuating means are connected to the water-cooled condenser for evacuating at least said water-cooled condenser. The method relates to a shut down and start-up of the power plant after the shutdown. The method includes: a) shut down of the steam turbine and gas turbine and/or a combustor of said gas turbine ; b) restoration of a good vacuum within the condenser by using said evacuating means; c) stopping said cooling water pump of said water-cooled condenser and said evacuating means, and filling up at least said condenser with steam up to slightly above atmospheric pressure; d) controlling the pressure with a flow of said cooling water; e) after a certain shut-down period starting the cooling water pump just before start-up of the plant; and f) starting the plant.

Abstract translation: 本发明涉及一种用于操作蒸汽动力装置，特别是联合循环发电厂的方法，其包括燃气轮机和具有热回收蒸汽发生器的蒸汽/水循环，燃气轮机的废气通过该蒸汽发动机流动， 水冷式冷凝器，给水泵和蒸汽轮机。 提供冷却水泵，用于将冷却水泵送通过所述水冷式冷凝器。 抽出装置连接到水冷式冷凝器，用于抽空至少所述水冷式冷凝器。 该方法涉及停电后关闭和启动电厂。 该方法包括：a）关闭汽轮机和燃气轮机和/或所述燃气轮机的燃烧器; b）通过使用所述排气装置在冷凝器内恢复良好的真空; c）停止所述水冷冷凝器和所述排气装置的所述冷却水泵，并且将至少所述冷凝器充满至少略高于大气压的蒸汽; d）用所述冷却水的流动来控制压力; e）在工厂启动之前，在冷却水泵启动一定关闭时间之后; 和f）启动植物。

公开(公告)号：US20140239638A1

公开(公告)日：2014-08-28

申请号：US14182390

申请日：2014-02-18

Applicant: ALSTOM Technology Ltd

Inventor： Jan SCHLESIER ,  Hamid OLIA ,  Martin SCHOENENBERGER

IPC: H02K7/18

CPC classification number: H02K7/1823 ,  F01K23/101 ,  H02K7/183 ,  Y02E20/16

Abstract: The disclosure refers to a method for providing a frequency response for a combined cycle power plant connected to an electric grid. The combined cycle power plant includes a gas turbine engine and a steam turbine engine. The steam turbine engine includes a boiler, a steam turbine, a pump, a condenser, a bypass for the steam turbine, a steam admission control valve. The steam turbine engine operates with the bypass closed or at least partly open to supply steam from the boiler to the condenser bypassing the steam turbine, and/or with the steam admission control valve at least partly open. The method comprises regulating the output load of the combined cycle power plant by regulating the steam admission control valve and/or by regulating the steam flow through the bypass in response to a frequency change of the electric grid. The output of the gas turbine can also be adjusted, such that steam generated by the boiler is sufficient to achieve the target load for the steam turbine.

Abstract translation: 本公开涉及一种用于为连接到电网的联合循环发电厂提供频率响应的方法。 联合循环发电厂包括燃气涡轮发动机和汽轮机。 蒸汽涡轮发动机包括锅炉，蒸汽轮机，泵，冷凝器，用于蒸汽轮机的旁路，蒸汽进入控制阀。 蒸汽涡轮发动机在旁路闭合或至少部分打开的情况下运行，以从锅炉向旁路蒸汽轮机的冷凝器和/或蒸汽进入控制阀提供至少部分打开的蒸汽。 该方法包括通过调节蒸汽进入控制阀和/或通过调节通过旁路的蒸汽流来响应于电网的频率变化来调节联合循环发电厂的输出负载。 也可以调节燃气轮机的输出，使得由锅炉产生的蒸汽足以实现蒸汽轮机的目标负荷。

公开(公告)号：US20160273406A1

公开(公告)日：2016-09-22

申请号：US15171681

申请日：2016-06-02

Applicant: ALSTOM TECHNOLOGY LTD.

Inventor： Hamid OLIA ,  Petrus KOLLER ,  Michael BREITFELD ,  Rudolf Zinniker

IPC: F01K23/10 ,  F02C6/18

CPC classification number: F01K23/101 ,  F01K13/02 ,  F01K23/10 ,  F01K23/106 ,  F02C6/18 ,  F05D2220/31 ,  F05D2220/32 ,  F22G5/12 ,  Y02E20/16

Abstract: A combined cycle system where steam discharged from a water separation unit is routed through a high pressure outlet line to a set of super-heaters and discharged from the set of super-heaters through a main outlet line of a heat recovery steam generator to be introduced into the steam turbine. An attemperating line is connected between the high pressure outlet line and the main outlet line of the heat recovery steam generator to introduce a portion of steam that is discharged from the water separation unit into the steam discharged from the set of super-heaters. The pressure difference across a control valve for steam temperature remains low in low load and/or high load applications of the combined cycle system.

Abstract translation: 一种联合循环系统，其中从水分离单元排出的蒸汽通过高压出口管线路由到一组超级加热器，并从该超热机组排出，通过热回收蒸汽发生器的主出口管路引入 进入蒸汽轮机。 在热回收蒸汽发生器的高压出口管线和主出口管线之间连接调温管线，将从水分离单元排出的蒸汽的一部分引入从一组超级加热器排出的蒸汽中。 用于蒸汽温度的控制阀之间的压力差在组合循环系统的低负载和/或高负载应用中保持较低。

公开(公告)号：US20140250913A1

公开(公告)日：2014-09-11

申请号：US14199506

申请日：2014-03-06

Applicant: ALSTOM Technology Ltd

Inventor： Hamid OLIA ,  Jan SCHLESIER ,  Michael BREITFELD ,  Philipp BRUNNER

IPC: F01K23/10

CPC classification number: F01K23/10 ,  F01K13/02 ,  F01K23/101 ,  F02C6/18 ,  F05D2220/76 ,  F05D2270/061 ,  Y02E20/14 ,  Y02E20/16

Abstract: Method for operating a combined-cycle power plant is provided. The plant includes at least a gas turbine and at least a steam power generation system. The plant activates at least one electric generator connectable to an electric grid, wherein the gas turbine includes a compressor. The steam power generation system includes a steam turbine, a heat recovery steam generator and a bypass line. The method is such that the gas turbine de-loads to a condition, where the compressor operates at its nominal speed. The method is such that the steam turbine de-loads in coordination with the de-load of the gas turbine, to a condition where the total load exported by the plant to the grid is substantially equal to zero, being both the gas turbine and the steam power generation system connected.

Abstract translation: 提供了一种操作联合循环发电厂的方法。 该设备至少包括燃气轮机和至少一个蒸汽发电系统。 该设备激活可连接到电网的至少一个发电机，其中燃气涡轮机包括压缩机。 蒸汽发电系统包括蒸汽轮机，热回收蒸汽发生器和旁路管路。 该方法使得燃气涡轮机卸载到压缩机以其标称速度运行的状态。 该方法使得蒸汽轮机与燃气轮机的卸载协调地脱载，其中由工厂输出到电网的总负载基本上等于零，这两者都是燃气轮机和 蒸汽发电系统连接。

公开(公告)号：US20140250901A1

公开(公告)日：2014-09-11

申请号：US14199312

申请日：2014-03-06

Applicant: ALSTOM Technology Ltd

Inventor： Hamid OLIA ,  Jan Schlesier ,  Michael Breitfeld ,  Philipp Brunner ,  Mark Stevens ,  Michael Caflisch

IPC: F01K23/10

CPC classification number: F01K23/10 ,  F01K13/02 ,  Y02E20/16

Abstract: A method for starting-up a steam turbine of a combined-cycle power plant is provided. The combined-cycle power plant includes a gas turbine and a steam power generation system having a steam turbine. The combined-cycle power plant activates at least one electric generator connectable to an electric grid. The gas turbine includes a compressor, such that, during starting-up of the steam turbine, both the gas turbine and the steam turbine are in operation. The steam turbine adjusts its load as a function of the load of the gas turbine in such a way that the sum of the load provided by the gas turbine and of the load provided by the steam turbine is equal to the auxiliary power demand of the plant. The load exported to the grid is equal to zero.

Abstract translation: 提供了一种启动联合循环发电厂的蒸汽轮机的方法。 联合循环发电厂包括燃气轮机和具有汽轮机的蒸汽发电系统。 联合循环发电厂激活至少一个可连接到电网的发电机。 燃气轮机包括压缩机，使得在蒸汽轮机的启动期间，燃气轮机和蒸汽轮机都在运行。 蒸汽轮机根据燃气轮机的负载调整其负载，使得由燃气轮机提供的负载和由蒸汽轮机提供的负载的总和等于设备的辅助电力需求 。 导出到网格的负载等于零。