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Rapid starting control method and rapid starting control system for steam turbine of combined cycle generating unit

A generator set, combined cycle technology, used in engine starting, engine components, machines/engines, etc., to solve problems such as energy loss

Inactive Publication Date: 2015-07-15
STATE GRID CORP OF CHINA +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

During this process, a large part of the exhaust gas from the gas turbine will be directly discharged through the bypass system, and the steam from the waste heat boiler will also be discharged to the condenser through the bypass valve, resulting in huge energy loss

Method used

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  • Rapid starting control method and rapid starting control system for steam turbine of combined cycle generating unit
  • Rapid starting control method and rapid starting control system for steam turbine of combined cycle generating unit
  • Rapid starting control method and rapid starting control system for steam turbine of combined cycle generating unit

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Embodiment Construction

[0039] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0040] see figure 1 A schematic flowchart of an embodiment of a method for controlling a quick start of a steam turbine of a combined cycle generating set according to the present invention is shown.

[0041] 101: Obtain the structure and operation data of the steam turbine, and establish

[0042] Sub-finite element model.

[0043] According to the structure of the steam turbine, the two-dimensional axisymmetric finite element model of the steam turbine roto...

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Abstract

The application discloses a rapid starting control method and a rapid starting control system for a steam turbine of a combined cycle generating unit. Because the starting speed of the steam turbine is constrained by the stress level of a rotor of the steam turbine, under the condition that the stress of the rotor does not exceed a maximum stress range, the starting curve of the steam turbine is adjusted according to real-time stress received by the rotor, the heating time of the steam turbine is shortened, moreover, the steam turbine is heated under low load, consequently, the steam turbine is started rapidly, and the purpose of generating more electricity and saving energy in the process of starting is achieved.

Description

technical field [0001] The present application relates to the field of gas-steam combined cycle power generation, and more specifically, relates to a method and device for rapid start-up control of a steam turbine of a combined cycle generating set. Background technique [0002] Gas-steam combined cycle power generation technology is becoming more and more mature, and with the further development of natural gas resources worldwide, the status of gas turbines and their combined cycle power generation in the power system is gradually increasing. Gas turbines are also favored for their quick installation, small footprint, quick start and stop, safety and reliability, and less water consumption. It can be predicted that with the adjustment of my country's energy structure and the increasingly stringent environmental protection requirements, the combined cycle, as an advanced power generation technology, will also increase its status in my country's power production industry. ...

Claims

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Application Information

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IPC IPC(8): F01D19/00
Inventor 顾正皓陈坚红吴文健毛志伟张宝包劲松应光耀樊应龙李卫军朱梅芳秦攀胡洲王异成
Owner STATE GRID CORP OF CHINA
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