Turbine emergency protective system capable of preventing misoperation

A technology for protection system and wrong action, applied in the direction of engine components, machines/engines, mechanical equipment, etc., can solve the problems of many constraints, bulky, poor stability and flexibility, etc., to achieve improved safety, high economic benefits, The effect of cost reduction

Active Publication Date: 2010-06-16
GUODIAN NANJING AUTOMATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] 1. Due to the limitations of PLC and DCS controllers, this mode needs to use a variety of IO cards, the circuit is complicated and the volume is large;
[0009] 2. There are many constraints, poor stability and flexibility, which is extremely unfavorable for system maintenance;
[0010] 3. The cost of PLC and DCS controllers is extremely expensive

Method used

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  • Turbine emergency protective system capable of preventing misoperation
  • Turbine emergency protective system capable of preventing misoperation

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Embodiment Construction

[0020] The present invention will be further described below in conjunction with drawings and embodiments.

[0021] figure 1 It is a structural schematic diagram of the steam turbine emergency protection system capable of preventing erroneous actions of the present invention,

[0022] In the present invention, two sets of complex programmable logic array hardware circuits which are completely independent from each other and have the same processing mode are arranged inside one set of ETS device. The output of the dual programmable logic array hardware circuit inside a set of ETS device is output after the hardware "AND" logic, to ensure that even if one of the programmable logic array hardware circuits operates abnormally, the output of the device will not move randomly, avoiding "misoperation" ". Two sets of ETS devices after the internal hardware "AND" logic operation form a redundant configuration with each other, and the final two outputs are output to the switch output ...

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Abstract

The invention provides a turbine emergency protective system capable of preventing misoperation, which comprises two sets of electronic traction support (ETS) devices. The turbine emergency protective system is characterized in that each ETS device is internally provided with two complex programmable logic arrays, the input end of each complex programmable lock array is connected with a turbine operation out-of-limit parameter switching value input signal, the output ends of the two complex programmable logic arrays in each set of ETS device are subjected to And logic through hardware and then output, the output ends of the two sets of ETS device are subjected to Or logic through the hardware and then output, the total output end trip signal is connected with a trip electromagnetic valve, and the complex programmable logic array comprises a complex programmable logic element and a field programmable gate array. The ETS systems greatly improve the safety of the whole system, achieve actual no misaction and no misoperation, and have low cost.

Description

technical field [0001] The invention relates to a steam turbine emergency protection system, in particular to a steam turbine emergency protection system capable of preventing erroneous actions, and 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 d...

Claims

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Application Information

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