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Load distribution adjustment method based on circulating water system operation mode

A technology of circulating water system and operation mode, applied in instruments, data processing applications, forecasting, etc., can solve problems such as the safety risk of switching pumps

Pending Publication Date: 2021-02-09
ZHEJIANG ZHENENG TECHN RES INST +1
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problem that the existing circulating water pump uses the large redundancy in the fuzzy concept as the adjustment principle, and in the face of the large-scale adjustment of the unit load, there is a safety risk in switching the water pump. The present invention provides a load distribution adjustment based on the operating mode of the circulating water system method

Method used

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  • Load distribution adjustment method based on circulating water system operation mode
  • Load distribution adjustment method based on circulating water system operation mode
  • Load distribution adjustment method based on circulating water system operation mode

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specific Embodiment approach 1

[0025] Specific implementation mode 1. Combination figure 1 As shown, the present invention provides a load distribution adjustment method based on the operating mode of the circulating water system, including:

[0026] Step 1: Connect all units in the circulating water system of the power plant, and arrange n types of unit combination operation modes according to different load demands;

[0027] Step 2: Under each unit combination operation mode, under the condition of the best vacuum of the steam turbine, use the ergodic method to obtain the optimal circulating water flow rate corresponding to the load change and circulating water temperature change of a single unit; and obtain the current unit combination operation The maximum load adjustment range under the mode;

[0028] Step 3: Establish an operation mode selection model according to the target load, ambient temperature and vacuum degree of the unit, and determine the selected unit combination operation mode according t...

specific Embodiment

[0041] Specific examples: combining figure 2 Shown, the method of the present invention is used for the guidance of primary load adjustment between plants, and concrete process is:

[0042] Step 1: Take a power plant as an example to carry out the renovation project of circulating water connection. The plant originally had two 300MW units and adopted an open circulating water system. Due to factors such as environmental changes and equipment aging, its operating efficiency is low. If the power plant is expanded, for example, adding 4×600MW units and carrying out the transformation of circulating water, the output of the circulating water pumps of the four newly added 600MW units can be increased and the operation will be stopped. Two 300MW units. Its renovation plan includes:

[0043] Stop using the circulation pump facilities in the first phase, and change the circulation pump room in the second phase to provide circulating cooling water to the units in the first and secon...

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Abstract

The invention discloses a load distribution adjusting method based on a circulating water system operation mode and belongs to the technical field of power plant load distribution. The method aims atsolving the problem that an existing circulating water pump takes large redundancy in a fuzzy concept as an adjusting principle, and safety risks exist in water pump switching under the condition thatthe unit load is greatly adjusted. The method comprises the steps of arranging n unit combination operation modes; obtaining the optimal circulating water flow corresponding to the single unit when the load changes and the circulating water temperature changes and the maximum load adjustment amplitude under the current unit combination operation mode; establishing an operation mode selection model, and determining a selected unit combination operation mode according to the maximum load adjustment amplitude; determining whether the circulating water pump combination is adjusted or not and whether the unit combination operation mode is switched or not according to the adjustable allowance, and finally determining the final unit combination operation mode to serve as primary load distribution guidance. The method is used for reversely guiding inter-plant load distribution.

Description

technical field [0001] The invention relates to a load distribution adjustment method based on the operation mode of a circulating water system, and belongs to the technical field of power plant load distribution. Background technique [0002] In order to improve the operating efficiency and safety of thermal power enterprises, it will become an inevitable trend to develop smart power plants while upgrading existing equipment. Based on this trend, it is necessary to pave the way for the digitalization and informatization of future equipment during the routine transformation and upgrading of existing equipment, so as to realize the intelligentization of power production. [0003] The transformation of existing power plants is mainly based on the basic principles of high efficiency, environmental protection, and safety, and upgrades or optimizes boilers, steam turbines, and auxiliary systems. Among the many transformation methods, the upgrading and transformation of the circu...

Claims

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Application Information

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IPC IPC(8): G06Q10/06G06Q10/04G06Q50/06
CPCG06Q10/0631G06Q10/04G06Q50/06
Inventor 顾伟飞童小忠朱宝祝相云赵卫正姚坤石家魁万杰
Owner ZHEJIANG ZHENENG TECHN RES INST
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