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A method for optimizing the operation of a solar photovoltaic-photothermal combined power generation system

A solar photovoltaic and combined power generation technology, applied in photovoltaic power generation, photovoltaic power stations, photovoltaic modules, etc., can solve problems such as strong volatility

Active Publication Date: 2022-05-24
NORTHEAST DIANLI UNIVERSITY
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  • Abstract
  • Description
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Problems solved by technology

Photovoltaic power generation has a strong daily periodicity and can only be generated during the day. In addition, the power generation process is sensitive to light and has strong fluctuations.

Method used

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  • A method for optimizing the operation of a solar photovoltaic-photothermal combined power generation system
  • A method for optimizing the operation of a solar photovoltaic-photothermal combined power generation system
  • A method for optimizing the operation of a solar photovoltaic-photothermal combined power generation system

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specific example

[0125] Specific example: a solar photovoltaic-photothermal combined power generation optimization operation method provided by the present invention includes the following contents:

[0126] 1) Instance background and parameter setting

[0127] figure 1 Schematic diagram of the basic principle of the operation and power generation of the CSP station. In the mirror field of the CSP station, the mirror reflected sunlight is used to collect the heat in the solar energy, and part of the heat is stored in the binary nitrate in the heat storage tank of the CSP station through the oil guide pipe. , the remaining heat is used to heat the water to generate high temperature and high pressure water vapor, so as to drive the steam turbine and then convert it into electricity to generate electricity; when there is no sunlight and the mirror field cannot collect solar energy but needs to generate electricity, it will be stored in the thermal storage tank of the solar thermal power station. ...

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Abstract

The present invention is a method for optimizing the operation of a solar photovoltaic-photothermal combined power generation system, which is characterized in that it starts from grasping the changing law of heat flow inside the photothermal power station when it is in operation, and utilizes the balance mechanism of heat in each part of the photothermal power station , to establish the power generation model of the solar thermal power station, and on this basis, establish the photovoltaic-photothermal combined power generation model, and construct the solar photovoltaic-photothermal combined power generation optimal operation scheduling strategy, which can take into account the most solar energy consumption and the degree of net load fluctuation The minimum operation and maintenance cost of the power system, that is, the optimal operation method that aims at the maximum profit of the photovoltaic-photothermal combined system and the strongest load-following capacity, and uses the weight method to process the objective function, which is scientific, reasonable and applicable. Strong, good effect and other advantages.

Description

technical field [0001] The invention relates to the field of optimal scheduling in power systems, and is an optimal operation method for a photovoltaic-photothermal combined power generation system that comprehensively considers solar energy consumption, net load fluctuation degree and power system operation and maintenance costs. Background technique [0002] Solar energy resources are abundant, and photovoltaic power generation (PV) is the main utilization form of solar energy resources in the prior art. However, due to its intermittency and volatility, it brings many problems to the safe and reliable operation of the power system. It is worth paying attention to the heat storage device with the help of Concentrating Solar Power (CSP) and its rapid climbing ability. The steam turbine unit can further improve the consumption of solar energy. In addition, photovoltaic and CSP have natural complementary advantages. Photovoltaic power generation has a strong daily periodicit...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/46H02S10/10
CPCH02J3/46H02S10/10Y02E10/50
Inventor 肖白王涛
Owner NORTHEAST DIANLI UNIVERSITY
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