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
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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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