3 results about "Direct solar radiation" patented technology

This invention relates to the field of ground-based direct solar radiation measurement and correction technology, and particularly to an field measurement correction method suitable for SIAR solar radiation reference meters. The method includes the following steps: coaxially pointing the SIAR solar radiation reference meter and the instrument under test towards the observation target, initiating synchronous measurement, and reading the last heating power value; adjusting the electric heating power using the E-index model during both the optical measurement and electrical calibration stages; performing smoothing filtering based on the electrical calibration heating power results to achieve smooth correction of the radiation power of the instrument under test; acquiring temperature data from a temperature sensor, and calculating the radiation power temperature correction result based on a multi-parameter temperature correction model; repeating the steps to perform multiple sets of synchronous comparison tests, obtaining the comparison coefficient, and achieving correction. This method solves the problems of excessive jitter and calibration deviations at different temperatures in existing solutions during field testing, enabling shorter measurement times, more consistent steady-state results, and long-term consistency.

The application belongs to the technical field of solar thermal power generation, and particularly relates to a high-temperature double-pressure evaporation cascade organic Rankine cycle system based on heat-conducting oil. The system comprises a solar heat collection module composed of a trough parabolic heat collector and a linear Fresnel heat collector, which is used for receiving direct solar radiation and heating heat-conducting oil to medium-high temperature; and a heat storage module connected with the solar heat collection module and comprising a high-temperature heat storage tank and a low-temperature heat storage tank. The high-temperature heat storage tank and the low-temperature heat storage tank are both filled with phase change materials, and the latent heat of phase change of the phase change materials is used to maintain the working temperature constant under the condition of fluctuating solar radiation or no radiation at night. The double heat storage and heat release makes the operating temperature of the two heat storage tanks constant for a long time under various environmental conditions, solves the problem that the evaporation temperature fluctuates and the system efficiency is greatly reduced due to the continuous decrease of the heat release temperature of the traditional sensible heat storage system, and prolongs the heat storage time. The maximum thermal power conversion efficiency of the system in the full power generation mode is up to 40.17%.

The present application relates to a kind of solar field cloud shelter monitoring and control method, system based on multisensor data fusion.The method includes: the low-density scattered solar radiation sensor network and high-density overall solar radiation sensor network are cooperatively collected basic data in deployment, combined with adaptive filtering technique to filter noise interference, then based on the inverse deduction direct solar radiation intensity of radiation balance equation;While aiming at shelter area, non-shelter area uses differentiated interpolation and extrapolation method;Through convolutional neural network, cloud layer features are extracted, cloud movement trajectory and shelter range are predicted;Introduce geographic information system data, according to the projection length and shape of topographic relief correction cloud shadow;While fusing meteorological satellite data and cloud height data to construct cloud layer three-dimensional model;Based on direct solar radiation intensity distribution map and cloud shelter trajectory prediction result, the working state of heliostat in shelter area is dynamically adjusted, to avoid invalid operation and energy waste.