Thermal power generating unit main steam temperature control device and method
A main steam temperature and thermal power unit technology, which is applied in the direction of using electric mode for temperature control, etc., can solve the problems of insufficient response speed of the temperature control regulating valve, difficulty in ensuring the safety and stable operation of the unit, and achieve fast response and stable operation. Effect
Pending Publication Date: 2021-10-26
北京华科同和科技有限公司 +2
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Problems solved by technology
When the unit is lifting or lowering the load, it only responds to the automatic adjustment mode of temperature fluctuation through the change of PID parameters, and the temperature control valve responds quickly enough. When the load is stable, it cannot effectively predict and adjust automatically according to the combustion situation of the boiler, and it is difficult to ensure the safety and stability of the unit. run
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[0017] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings. Here, the exemplary embodiments and descriptions of the present invention are used to explain the present invention, but not to limit the present invention.
[0018] In order to control the temperature of the main steam of the thermal power unit and ensure the safe and stable operation of the unit, the embodiment of the present invention provides a temperature control device for the main steam of the thermal power unit, such as figure 1 As shown, the device may include: a PID controller 101 and a temperature control valve 102;
[0019] The PID controller is used to issue an overriding action command to the temperature control valve when the main steam temperature deviation value and the main steam temperature change rate ex...
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The invention discloses a thermal power generating unit main steam temperature control device and method. The device comprises a PID controller and a temperature control regulating valve. The PID controller is used for sending an override action instruction to the temperature control regulating valve when the main steam temperature deviation value and the main steam temperature change rate exceed a set range at the same time, and the override action instruction comprises an override action quantity; and the temperature control regulating valve is used for controlling the main steam temperature of the thermal power generating unit according to the override action instruction. Temperature control can be carried out on main steam of the thermal power generating unit, and safe and stable operation of the unit is guaranteed.
Description
technical field [0001] The invention relates to the technical field of thermal power generation unit maintenance, in particular to a thermal power unit main steam temperature control device and method. Background technique [0002] The composition of the power supply on the current domestic power grid is complex. In order to maintain the safe and stable operation of the power grid system, conventional thermal power generating units need to have a higher variable load rate to meet the safety and assessment requirements of the power grid; on the other hand, due to domestic coal resources, And the economic requirements of the power plant, the coal quality is very unstable. When the thermal power unit maintains a high variable load speed operation condition, due to coal quality fluctuations and boiler combustion and other factors, there are problems such as large fluctuations in the main steam temperature of the unit. [0003] The fluctuation of the main steam temperature of th...
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IPC IPC(8): G05D23/19
CPCG05D23/19
Inventor 骆意高明帅宿修平陈振山苏小舟张志伟
Owner 北京华科同和科技有限公司