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Direct air cooling system operation optimization method

An air-cooling system and operation optimization technology, applied in pump control, non-variable-capacity pumps, machines/engines, etc., can solve the problems of lack of scientific basis and poor economy of air-cooling system, and achieve the improvement of automatic operation level and operation economy. , the effect of reducing labor intensity

Active Publication Date: 2016-12-14
XIAN XIRE ENERGY SAVING TECH
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Problems solved by technology

[0003] At present, the operation of the air-cooling system of direct air-cooled coal-fired generating units is to set the back pressure to operate automatically, or the operator manually controls the operation; the back pressure setting is often set according to the lowest back pressure that the air-cooling system can operate, or the back pressure is set artificially. Pressure value, without scientific basis, makes the air cooling system run economically

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  • Direct air cooling system operation optimization method

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Embodiment Construction

[0028] The present invention is described in further detail below in conjunction with accompanying drawing:

[0029] see figure 1 , the direct air cooling system operation optimization method of the present invention comprises the following steps:

[0030] 1) Input the initial parameters, if the ambient temperature T a ≥2°C, when the load of the unit is stable, perform step 2) to start the automatic optimization operation mode; otherwise, start the manual mode;

[0031] 2) Adjust the operating frequency of the air-cooling fan and reduce it by 0.5Hz to run stably for 1 minute, that is, adjust the air-cooling fan to frequency f n =f n－1 -0.5 runs; where, f n－1 To adjust the operating frequency of the front air-cooling fan, n is the speed of the air-cooling fan;

[0032] 3) If the air cooling fan power consumption variation ⊿P f Greater than or equal to the amount of change in generating power of the unit ⊿N, that is, ⊿P f ≥⊿N, go to step 4); otherwise go to step 9);

[0...

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Abstract

The invention discloses a direct air cooling system operation optimization method. During air cooling operation, when automatic operation is optimized to be characterized in that the air cooling fan running frequency is increased, the air cooling fan running frequency is continuously increased until deltaN is smaller than or equal to deltaPf as long as the unit generation power variable quantity deltaN is larger than the air cooling fan wasted work variable quantity deltaPf, and the optimum air cooling fan running frequency is found; and when the air cooling fan running frequency is decreased, the air cooling fan running frequency is continuously decreased until deltaPf is smaller than or equal to deltaN as long as the air cooling fan wasted work variable quantity deltaPf is larger than the unit generation power variable quantity deltaN, and the optimum air cooling fan running frequency is found. After the optimum air cooling fan running frequency is found, an air cooling fan is kept to run at the frequency. By means of the direct air cooling system operation optimization method, errors of manual adjustment of operation workers are avoided, the labor intensity of the operation workers is reduced, and the operating economy of a generator unit is improved. Finally, the direct air cooling system operation optimization method is simple and practical, and the unit automation running level is improved.

Description

【Technical field】 [0001] The invention relates to a method for optimizing the operation of a direct air cooling system. 【Background technique】 [0002] With the implementation of the national energy conservation and emission reduction policy, the requirements for coal-fired generating units are getting higher and higher, especially the Ministry of Environmental Protection, the National Development and Reform Commission, and the National Energy Administration jointly issued the Huanfa [2015] No. Implementation of Ultra-low Emissions and Energy Conservation Transformation Work Plan for Coal-fired Power Plants puts forward indicators and progress requirements for energy conservation and consumption reduction of coal-fired power plants. Therefore, in order to reduce the energy consumption of unit operation, it is of great significance to carry out optimized operation. [0003] At present, the operation of the air-cooling system of direct air-cooled coal-fired generating units i...

Claims

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Application Information

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IPC IPC(8): F04D27/00
CPCF04D27/00F04D27/001F04D27/007
Inventor 陈胜利吕凯荆涛李高潮万超刘学亮
Owner XIAN XIRE ENERGY SAVING TECH
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