Thermal power generating unit loading control system and method based on continuously adjustable back pressure

A load control, thermal power unit technology, applied in mechanical equipment, steam engine installations, machines/engines, etc., can solve problems such as large delay of boiler, large delay furnace side, limitation and so on

Active Publication Date: 2013-07-24
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

However, the large lag and large delay characteristics of the boiler side make it difficult for the change of the boiler side to keep up with the adjustment of the steam turbine side, and at present, the large-parameter thermal power

Method used

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  • Thermal power generating unit loading control system and method based on continuously adjustable back pressure
  • Thermal power generating unit loading control system and method based on continuously adjustable back pressure
  • Thermal power generating unit loading control system and method based on continuously adjustable back pressure

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Embodiment Construction

[0036] The present invention will be further described below in conjunction with accompanying drawing and specific embodiment:

[0037] The back pressure continuous regulation system consists of variable load control subsystem 13, back pressure protection subsystem 12 and optimal back pressure subsystem 14, such as image 3 shown. Among them, the back pressure protection subsystem 12 needs to keep running at all times, and the variable load control subsystem 13 and the optimal back pressure subsystem 14 are operated by "choosing one of the two". The back pressure protection subsystem 12 and the optimal back pressure subsystem 14 operate in combination to realize the safe and economical operation of the unit; The back pressure protection subsystem 12 and the variable load control subsystem 13 operate in combination to increase the variable load rate of the unit as much as possible on the basis of ensuring the safe operation of the unit.

[0038] The whole implementation proce...

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Abstract

The invention belongs to the technical field of thermal power generating unit peaking, and particularly relates to a thermal power generating unit loading control system and a thermal power generating unit loading control method based on continuously adjustable back pressure. The system comprises a high-pressure cylinder, a medium-pressure cylinder, a low-pressure cylinder, a generator, a condenser, a circulation water pump, a control system, a condensate pump, a boiler, and a circulating water pump motor execution unit, and is characterized by further comprising a back pressure continuous adjustment system. The method includes the first step that a logical judgment unit in the control system judges a working situation of a unit, the second step that a back pressure protection sub-system enters an execution stage, the third step that a best back pressure sub-system enters the execution stage and the fourth step that a varying load control sub-system enters the execution stage. In terms of a wet cooling unit, by means of continuous adjustment of circulating water flow, back pressure of the unit can be changed and varying load control for the unit can be achieved to a certain extent. Therefore, the system and the method can change varying load operation characteristics and economical efficiency of the thermal power generating unit.

Description

technical field [0001] The invention belongs to the technical field of peak regulation of thermal power units, and in particular relates to a thermal power unit load control system and method based on continuously adjustable back pressure. Background technique [0002] In my country's energy structure layout, thermal power generation dominates, and there is a lack of power sources that can stabilize the random fluctuations of new energy power. With the large-scale development and utilization of wind power, solar power and other new energy power, the problems and contradictions faced by new energy power consumption have become more prominent. In order to ensure the safe, high-quality, and economical operation of the power system, the North China Power Grid has issued the "Implementation Rules for the Grid-connected Operation and Management of Power Plants in the North China Region" to assess the load and frequency tracking capabilities of grid-connected power plants. Require...

Claims

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Application Information

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IPC IPC(8): F01K13/00F01K13/02
Inventor 王玮曾德良刘吉臻牛玉广
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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