3results about How to "Improve land use efficiency" patented technology

The invention discloses a green circular agricultural system which is scientific in system layout, and vegetable greenhouses are designed around paddy fields, ditches and roads to facilitate logistics. Sturdy and durable concrete frames and specially-made hollow cement bricks are adopted for block intervals, hollow channels are formed in internal roads, drainage and ventilation are facilitated, and combination of paddy fields and aquaculture is supported. In the rice growing period, the water surface gradually rises to the appropriate height of the rice to promote symbiosis of the rice and aquatic products; after ripening, the water surface is lowered to-0.5 m to facilitate harvesting, then the water surface is raised to + 0.5 m, and the water surface is lowered to-0.5 m in spring of the next year to be air-dried and then directly planted, so that efficient circulation is formed. A solar photovoltaic panel is arranged on the top of the sightseeing channel, green energy utilization is achieved, and water flowing is enhanced through an unpowered water pumping device. Excrement is converted into fertilizer by a septic tank in a spotted pig breeding area, so that resource recycling is realized. In the slack season, the ditch and the paddy field can be jointly used for aquaculture. The sightseeing function is achieved, the land utilization efficiency is improved, sustainable development is promoted, and high efficiency and diversification of agricultural production are achieved.

The utility model relates to the technical field of standardization power distribution area, especially relates to a kind of integrated intelligent rack equipment, integrated intelligent rack equipment includes low voltage module, voltage transformation module and rack, the low voltage module and the voltage transformation module room are all arranged on the rack;The low voltage room is connected with the transformer room by plug-in assembly, to realize modular assembly.The main purpose of the utility model is to propose a kind of integrated intelligent rack equipment, to reduce the overall size of equipment, save cost, shorten construction period, greatly reduce flashover and short-circuit failure probability, reduce maintenance cost.

The application provides a wind farm layout and yaw control multi-objective optimization method based on a nested collaborative optimization architecture. A three-layer nested collaborative optimization architecture is established. The outer layer iteratively searches for a wind turbine position vector through a multi-objective optimization module to obtain a Pareto optimal solution set between annual power generation and land use efficiency. The middle layer annual power generation evaluation module quantitatively evaluates the power generation potential of each candidate wind turbine layout scheme generated in the iteration process. The inner layer yaw optimization module is called to obtain the optimal output power of each candidate wind turbine layout scheme under different wind conditions. The optimal output powers are weighted and summarized according to their occurrence probabilities, and the corresponding collaborative design annual power generation is output to feedback to the outer layer multi-objective optimization module. The yaw control optimization result is directly embedded in the wind farm layout design scheme, realizing the collaborative optimization of the wind turbine spatial layout and the yaw control strategy, which is very beneficial to improve the power generation efficiency of the wind farm in the region with limited land resources.