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Renewable energy source cooling, heating and power microgrid system and control method

ActiveCN104716644ANo pollution in the processSolve the problem of capacity configuration redundancyPV power plantsSingle network parallel feeding arrangementsMicrogridEngineering
The invention discloses a renewable energy source cooling, heating and power microgrid system and a control method. The renewable energy source cooling, heating and power microgrid system comprises a power module and a cooling/heating module. According to the power module, a solar power generation system is sequentially connected with a DC/DC converter and a DC/AC converter in series and then connected with an AC bus, a wind power generation system is sequentially connected with an AC/DC converter and a DC/AC converter and then connected with the AC bus, a gas internal combustion generation system is directly connected with the AC bus, a storage battery pack is connected with the AC bus through a bi-directional DC/AC converter, variable power electricity storage hot water tanks are connected with the AC bus, and the AC bus is connected with a power distribution network through a PCC. The renewable energy source cooling, heating and power microgrid system and the control method have the advantages that clean renewable energy sources such as methane, wind energy and solar energy are adopted as energy sources of a cooling, heating and power microgrid, no pollution is caused to the environment, operation cost is very low, and the application range is wide; by the adoption of a multi-microsource energy supply mode, the problem of capacity allocation redundancy of a single energy supply system can be solved.
Owner:SHANDONG UNIV

Crop information and sample acquisition method and system

The present invention discloses a crop information and sample acquisition method and system. The method comprises: generating a plurality of acquisition tasks according a preset acquisition plan and the target acquisition parameters of crop information; sending down acquisition tasks corresponding to the screened acquisition terminals through a network; performing crop information acquisition through a plurality of acquisition terminals according to corresponding acquisition tasks, uploading the collected crop information to a data center; and receiving and processing the crop information sent by the acquisition terminals through the data center. The system comprises the data center and a plurality of the acquisition terminals; the data center is configured to generate a plurality of sampling tasks and process received acquisition data of the crop information; and the acquisition terminals are configured to complete the acquisition of corresponding crop information and samples and upload the corresponding crop information and samples to the data center through the network. According to the invention, the defects are avoided that a traditional method is used for acquisition of simple crop physical parameters and agricultural condition information with large time and labor consumption and low efficiency.
Owner:INST OF REMOTE SENSING & DIGITAL EARTH CHINESE ACADEMY OF SCI

Construction method for ion chromatography fingerprint spectrums of ganoderma lucidum spore powder polysaccharide

The invention discloses a construction method for ion chromatography fingerprint spectrums of ganoderma lucidum spore powder polysaccharide, which comprises acid-enzyme partial hydrolysis of the ganoderma lucidum spore powder polysaccharide, the ion chromatography fingerprint analysis of monosaccharide components and oligosaccharide components of hydrolysis products of the ganoderma lucidum spore powder polysaccharide and the confirmation of standard fingerprint spectrums. By means of the high performance anion-exchange chromatography (HPAEC) analysis and the comparison of the fingerprint spectrums of polysaccharide contents in ganoderma lucidum spore powder samples from 20 different production places, the common fingerprint characteristics of the polysaccharide contents in the ganoderma lucidum spore powder samples are determined, the standard fingerprint spectrums of the monosaccharide components and the oligosaccharide components are obtained respectively, and 11 monosaccharide common characteristic peaks in monosaccharide spectrums, 4 oligosaccharide common peaks in the oligosaccharide spectrum and 1 polysaccharide peak are determined. According to the construction method for the ion chromatography fingerprint spectrums of the ganoderma lucidum spore powder polysaccharide, the method is stable, the precision degree is high, the reproducibility is good, the method is easy to master, quality conditions and production places of the ganoderma lucidum spore powder polysaccharide can be grasped from two aspects of fingerprint spectrums of the monosaccharide components and the oligosaccharide components of the acid-enzyme partial hydrolysis products which can reflect the components and structural characteristics of the ganoderma lucidum spore powder polysaccharide, and a new scientific method is provided for the quality control and the authenticity identification of the ganoderma lucidum spore powders.
Owner:中食都庆(山东)生物技术有限公司
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