Solar-thermal power generation steam heat receiver control and equipment protection method and system

A technology for solar thermal power generation and control methods, which is applied in control systems, lighting and heating equipment, steam generation, etc., can solve problems such as operation and control methods are not involved, and achieve improved control quality, small heat absorption area, and great difficulty. Effect

Inactive Publication Date: 2010-10-27
HOHAI UNIV
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Problems solved by technology

[0005] The patent No. 200910021308.3 invented by Xi'an Jiaotong University "a simulation device for solar cavity heat absorber" discloses the principle, structure and thermal performance of the steam generator used in solar thermal power generation, that is, the heat absorber, but the The patent does not involve the operation and control method in the heat absorber. The present invention aims at this kind of heat absorber and invents its optimized control control method and system

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  • Solar-thermal power generation steam heat receiver control and equipment protection method and system
  • Solar-thermal power generation steam heat receiver control and equipment protection method and system
  • Solar-thermal power generation steam heat receiver control and equipment protection method and system

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Embodiment Construction

[0031] Such as image 3 As shown, the superheated steam temperature control method of the solar tower thermal power generation receiver includes two-stage steam temperature control. The characteristics of the first-stage steam temperature control include: an outer loop control loop and an inner loop control loop. The outer loop control loop includes the following links: function generator ①, the function describes the relationship between the temperature of the superheated steam after the secondary superheater and the effective radiant light power of the input cavity heat absorber; the average link of collecting data Collect the temperature of the superheated steam after the two secondary superheaters of the cavity heat absorber, and then make an arithmetic mean; PI controller ②, its control algorithm is to perform proportional and integral operations on the deviation of ① and ②. The inner control loop includes: collecting data averaging link It is the arithmetic average o...

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Abstract

The invention discloses a solar-thermal power generation steam heat receiver control and equipment protection method and system. The method is characterized by comprising a secondary control method for superheat steam temperature, a multi-impulse control method for water level, a sliding pressure control method for pressure, an overcast operation control and overtemperature protection method for the heat receiver. In the equipment protection method, a thermocouple is additionally arranged on the surface of the heat absorber to identify the temperature and the temperature gradient of each point; a fuzzy mathematics method is adopted, if the temperature fuzzy degree exceeds a certain value, and the fuzzy degree of the temperature gradient exceeds a certain value, the identification result is superheat, and a protective valve at the inlet of the heat absorber is pulled down, and all heliostats are transferred. The system comprises a superheat vapor temperature secondary control system, a water level multi-impulse control system and a pressure sliding pressure control system.

Description

technical field [0001] The invention is aimed at a water vapor heat absorber for solar thermal power generation. Through the working principle of the heat absorber and the characteristics of heat transfer and heat storage, the temperature, pressure and water level of the steam drum of the heat absorber are optimized. control, so the present invention belongs to solar thermal power generation water vapor heat absorber control and equipment protection methods and systems for solar energy utilization, thermal power and automatic control. Background technique [0002] Solar tower thermal power generation is an important form of solar thermal utilization, a typical solar thermal power generation system such as figure 1 As shown, the system consists of a mirror field, a heat absorber, a turbine power generation system and a heat storage system. The function of the mirror field is to concentrate low-density solar energy into high-density energy, which is composed of heliostats and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F22B35/00
Inventor 刘德有许昌郑源万定生郭苏
Owner HOHAI UNIV
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