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Optimal configuration method for photovoltaic photo-thermal complementary power generation system

A power generation system and optimized configuration technology, applied in photovoltaic power generation, circuit devices, electrical components, etc., can solve problems such as the inability to achieve optimal system configuration, achieve high economy and energy security rate, reduce costs, and improve performance indicators. Effect

Pending Publication Date: 2022-05-27
ECONOMIC RES INST OF STATE GRID GANSU ELECTRIC POWER
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  • Application Information

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Problems solved by technology

[0004] The purpose of the optimal configuration method of a photovoltaic solar thermal complementary power generation system provided by the present invention is to overcome the problem that the solar thermal power generation system in the prior art cannot perform corresponding optimization work according to different resource conditions and operating conditions, and cannot realize the optimal configuration of the system. question

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Embodiment 1

[0032] like figure 1 Shown: a photovoltaic photothermal complementary power generation system optimization configuration method, comprising the following steps:

[0033] 1) Build a subsystem model, the subsystem model includes a photovoltaic system model and a photothermal system model;

[0034] 2) Adjust the boundary conditions of the subsystem model and set the operating constraints of the subsystem on the time series;

[0035] 3) Set the optimization goal of the subsystem;

[0036] 4) Apply swarm intelligence algorithm to encode the variables of the subsystem, simulate the subsystem model after encoding, and obtain the subsystem fitness function based on the simulation results;

[0037] 5) According to the target of the subsystem set in step 3), the subsystem fitness function obtained in step 4) is iteratively optimized;

[0038] 6) According to the set termination condition, judge whether the iterative optimization is terminated; when the termination condition is reache...

Embodiment 2

[0042] On the basis of Example 1, when building the photovoltaic system model, the efficiency of the photovoltaic module is corrected according to the rated operating temperature of the photovoltaic module.

[0043] The temperature effect of solar photovoltaic power generation applications is mainly manifested in that the electrical performance of the solar charge and discharge controller changes with temperature, thus affecting the power generation performance of the photovoltaic system. By correcting the efficiency of photovoltaic modules according to the rated operating temperature of the photovoltaic modules, it can be reasonably Play and improve the power generation performance of photovoltaic systems.

[0044] Preferably, the formula for calculating the rated operating temperature of the photovoltaic module is:

[0045] where T A is the ambient temperature, °C; T NOCT is the rated operating temperature of photovoltaic modules, °C; T A,NOCT is the PV module temperatu...

Embodiment 3

[0050] In the technical aspect of Embodiment 2, the solar thermal system model includes a concentrating field model, a heat absorber model, a heat storage and exchange system model, and a power generation system model.

[0051] Preferably, the focusing field model is based on a cosine loss η cos , shading and blocking loss η s&b , atmospheric attenuation loss η att and truncation loss η int Efficiency analysis and construction; the corresponding calculation formula of the optical efficiency of the mirror field is as follows:

[0052] n field = n cos ×η s&b ×(1-η att )×η int

[0053] Since the efficiency and operation of the concentrating field will always be affected by the sun's trajectory and resource conditions, a time series model should be built according to the above formula as the basis for the time series optimization of the present invention. Among them, building a time series model is an existing technology, and its specific building method is not described ...

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Abstract

The invention belongs to the technical field of solar hybrid power generation, and particularly provides a photovoltaic photo-thermal complementary power generation system optimal configuration method, which comprises the following steps: building a subsystem model, carding boundary conditions of the subsystem model, and setting operation limiting conditions of the subsystem model on a time sequence; setting an optimization target of the subsystem; a swarm intelligence algorithm is applied to encode variables of the subsystem, simulation is performed through a subsystem model after encoding, and a subsystem fitness function is obtained based on a simulation result; performing iterative optimization on the fitness function of the subsystem according to the target of the subsystem; and judging whether the iterative optimization is terminated or not, and configuring the subsystem according to the optimized subsystem fitness function. The problem that an existing photo-thermal power generation system cannot achieve optimal configuration of the system is solved, reasonable technical configuration of the photovoltaic photo-thermal system can be achieved, and parameter configuration of a photo-thermal power station can meet the requirement for peak regulation of the system.

Description

technical field [0001] The invention belongs to the technical field of solar hybrid power generation, and in particular relates to an optimized configuration method for a photovoltaic photothermal complementary power generation system. Background technique [0002] Multi-energy complementary research based on different power generation technologies is one of the hotspots in the current renewable energy technology field. Due to the uncertainty of optical resources, if the system needs to run stably, it is necessary to consider configuring a more controllable peak-shaving power supply. The solar thermal power generation system is an important direction of solar thermal utilization. It can provide a smoother and more efficient power supply by configuring molten salt heat storage. It is a beneficial supplement to the traditional new energy system and an ideal peak-shaving power supply. However, since the CSP system is usually composed of multiple links such as heat collection, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/04G06Q10/06G06Q50/06H02J3/00H02J3/38H02J3/46
CPCG06Q10/04G06Q10/06313G06Q10/06312G06Q50/06H02J3/008H02J3/381H02J3/46H02J3/466H02J2203/20H02J2203/10H02J2300/22H02J2300/24H02J2300/40Y02E10/56
Inventor 杨德州彭婧王洲张中丹李媛贾春蓉宋汶秦曹喆孙亚璐杨婷婷
Owner ECONOMIC RES INST OF STATE GRID GANSU ELECTRIC POWER
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