Method for rapidly implementing action of emergency protective system of steam turbine

A technology of protection system and implementation method, applied in the direction of machines/engines, mechanical equipment, engine components, etc., can solve problems such as intricate parameters, achieve the effects of improving response speed, avoiding performance degradation, and avoiding major accidents

Inactive Publication Date: 2010-07-28
GUODIAN NANJING AUTOMATION
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0006] For a huge steam turbine system, the parameters that restrict its safe operation are intricate, and the abnormality of a certain link may cause chain actions of important related parameters in other links

Method used

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  • Method for rapidly implementing action of emergency protective system of steam turbine
  • Method for rapidly implementing action of emergency protective system of steam turbine

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Embodiment Construction

[0011] The present invention will be further described below in conjunction with accompanying drawing.

[0012] as indicated figure 1 As shown in , it is a schematic diagram of the quick realization of the action of the steam turbine emergency protection system.

[0013] Based on the principles of simplicity, directness, independence, and speed, the present invention makes full use of the programmable functions of complex programmable logic arrays and the high speed of complex digital logic operations. In the design, the monitored steam turbine parameter digital signal After being processed by the digital input channel, it directly enters the complex programmable logic array, and after a given logic judgment, the complex programmable logic array directly outputs the trip signal to the digital output channel, which will avoid switching, expansion and conversion to the greatest extent. Wait for the middle link.

[0014] In the present invention, when the ETS system receives a ...

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Abstract

The invention discloses a method for rapidly implementing action of an emergency protective system of a steam turbine. The method is characterized by comprising the following steps: processing a parameter digital quantity signal of a monitored steam turbine through a switching value input channel; directly sending the signal into a complex programmable logic array; performing given logic judgment on the signal and directly outputting a tripping signal to a switching value output channel from the complex programmable logic array; and switching on a tripping electromagnetic valve, wherein the complex programmable logic array comprises a complex programmable logic apparatus and an on-site programmable gate array. The method increases response speed of the steam turbine in case of an abnormal situation, prevents performance degradation of huge steam turbine system equipment and major accident occurrence and plays a decisive and enormous role in improving safety of a steam turbine system, prolonging service life of hardware and the like.

Description

technical field [0001] The invention relates to a method for quickly realizing the action of a steam turbine emergency protection system, which belongs to the technical field of electric power system automatic control. Background technique [0002] ETS (EMERGENCY TRIP SYSTEM) is the abbreviation of steam turbine emergency trip system. The steam turbine emergency trip system is specifically applied in the heat-engine plant comprehensive automation system (Heat-Engine PlantComprehensive Automation) to monitor the operating parameters of the steam turbine (turbine speed, lubricating oil pressure, condenser vacuum, DEH fault, bearing vibration, axial displacement , thermal expansion, differential expansion, bearing oil return temperature, high water level, exhaust chamber pressure, etc.), when the parameter exceeds its limit value, the system will automatically close all the steam inlet valves of the steam turbine and shut down in an emergency to ensure the safe operation of the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B19/05F01D21/00
Inventor 吴胜华杨卫民马伟东
Owner GUODIAN NANJING AUTOMATION
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