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43results about How to "Priority use" patented technology

Regulation and control method and system for switching grid-connected operation mode to island operation mode of microgrid

The invention discloses a regulation and control method and system for a switching grid-connected operation mode to an island operation mode of a microgrid. The method comprises the following steps: carrying out inputting and quitting on devices in the microgrid based on the importance degree according to the practical application demands, and carrying out regulation and control priority ranking; during grid-connecting, collecting operating data information and trend distribution information of the microgrid in real time; precaculating the value of power balance gap happened after losing main network electric power once the microgrid is switched to the island operation mode; deducing and calculating the power regulation and control action of a distribution power source, load equipment and an energy storage device which can be switched or adjusted instantly according to the priority ranking of the devices, so that when island occurs, a new power balance can be instantly established, island regulation and control pre-plans for different devices can be generated, and the pre-plans are transmitted to control terminals of the corresponding devices in advance; and when the island is monitored, the island change information is transmitted to the control terminals, so that the controllable device is triggered to execute corresponding island regulation and control pre-plans automatically. Through the reasonable regulation and control, the electric energy is allowed to be utilized reasonably.
Owner:ZHUHAI UNITECH POWER TECH CO LTD

Natural gas oxygen-enriched combustion system capable of using liquefied natural gas (LNG) cold energy for air separation oxygen-making and carbon capture

The invention relates to a natural gas oxygen-enriched combustion system capable of using liquefied natural gas (LNG) cold energy for air separation oxygen-making and carbon capture. The system comprises an LNG cold energy air separation oxygen-making subsystem, an oxygen-enriched high-pressure water-adding combustion cycle power generation subsystem and a high-pressure liquid oxygen carbon capture subsystem; the LNG cold energy is applied to the air separation oxygen-making process of a natural gas oxygen-enriched combustion power plant, and carbon dioxide produced by oxygen-enriched combustion is recovered by condensation at the same time, so that zero emission of carbon is realized. The problems that the oxygen-enriched combustion power plant is high in energy consumption of air separation oxygen-making and high in carbon capture cost can be solved. Furthermore, a high-pressure liquid nitrogen recycling oxygen-making subsystem is additionally arranged, so that liquid nitrogen cold energy is further utilized, and the oxygen-making energy consumption is reduced; therefore, system energy efficiency level is improved. After the natural gas oxygen-enriched combustion system is adopted, the cold energy is continuously transmitted and used, and the two problems that the oxygen-enriched combustion power plant is high in energy consumption of air separation oxygen-making and high in carbon capture cost can be solved; the natural gas oxygen-enriched combustion system can be used for an electric system taking LNG as fuel.
Owner:HUAZHONG UNIV OF SCI & TECH

Novel intelligent multi-energy multi-mode uninterruptible power supply

The invention relates to a novel intelligent multi-energy multi-mode uninterruptible power supply. The uninterruptible power supply is characterized by being composed of an input and output signal detecting module, an input switching device, an output control device, a high-power rectifying module, an intelligent charging module, a maintenance-free battery, an inverter module, an isolating filtration module, new energy power generation modules (the intelligent wind power module and the intelligent solar power module), an auxiliary work power supply module and a system center control module. The uninterruptible power supply has the advantages that an intelligent energy switching scheme is provided, all kinds of energy is optimally distributed, the priority of clean energy is the highest, the battery and the mains supply are secondary, and the economy and the environmental protection property of actual operation of a system are improved. The intelligent uninterruptible power supply with energy optimization as the target can work on various occasions and various loads. A bus control technology is adopted among all the modules in the uninterruptible power supply, the stability is high, and expansion is convenient. The uninterruptible power supply can be applied to single-phase power supply and three-phase power supply, the full-digital intellectualized design is adopted, and manual maintenance is greatly reduced.
Owner:湖南心澄新能源研究所(有限合伙) +1

Optical network unit and IP managing method of optical network unit

The invention provides an optical network unit and an IP managing method of the optical network unit. The optical network unit comprises a first receiving module, a first configuring module, a second receiving module, a second configuring module and a third configuring module, wherein the first receiving module is used for receiving management IP information which is delivered by an OLT (Optical Line Terminal), and the management IP information comprises a management IP as well as a route corresponding to the management IP and a VLAN (Virtual Local Area Network); the first configuring module is used for configuring the management IP and the route thereof according to a local IP management mode; the second receiving module is used for receiving narrow band IP information which is delivered by the OLT and an IP management mode, and the narrow band IP information comprises a narrow band IP as well as a route corresponding to the narrow band IP and a VLAN; the second configuring module is used for configuring the delivered narrow band IP and the route thereof according to the delivered IP management mode and the local IP management mode; and the third configuring module is used for configuring the delivered IP management mode to the local IP management mode. By using the invention, the automation management of a double-IP address of the ONU (Optical Network Unit) can be realized.
Owner:赵春霞

Cooling and heating system utilizing heat pump air conditioner and solar energy

The invention discloses a cooling and heating system utilizing a heat pump air conditioner and solar energy. The cooling and heating system is characterized by comprising a solar energy unit, a heat pump air conditioner unit, a water tank and a tail end cool and heat supply unit. The solar energy unit comprises a solar heat collector, a water inlet pipeline and a water outlet pipeline, the water inlet pipeline and the water outlet pipeline are connected with the solar heat collector, an electric heat tracing band is arranged on the periphery of the water inlet pipeline and the water outlet pipeline, and the electric heat tracing band is connected with a solar controller. The water inlet pipeline and the water outlet pipeline are respectively provided with a shut-off valve, an electromagnetic valve is arranged at the downstream position of the shut-off valve of the water inlet pipeline, a check valve is arranged at the downstream position of the shut-off valve of the water outlet pipeline, and a solar circulating pump is arranged at the downstream position of the check valve. A heat collector temperature probe is arranged on the solar heat collector, and connected with the solar controller, and the water inlet pipeline and the water outlet pipeline are connected with an air discharge pipe at the tail end of the solar heat collector.
Owner:何森

Wastewater utilization device

The invention discloses a wastewater utilization device comprising a wastewater channel and a wastewater tank. The wastewater channel is provided with a water inlet end, a wastewater pump assembly and a water outlet end, and the water inlet end is communicated with the wastewater tank. The wastewater tank is provided with a water collection mouth. The waste water utilization device is characterized in that the device further comprises a water feeding channel, a water using sensor, and a water shortage sensor; the water feeding channel is connected in a bypass mode to the wastewater channel between the water outlet end and the wastewater pump assembly; the wastewater channel is equipped with a water feeding solenoid valve; the water using sensor is arranged on the wastewater channel between the water outlet end and the wastewater pump assembly; and the water shortage sensor is arranged on the wastewater tank or on the wastewater channel. The wastewater utilization device of the invention has a simple and reasonable structure, can be matched with the wastewater tank, a RO (reverse osmosis) pure water machine or other equipment containing available recycled water in use, preferably uses recycled water (wastewater) as water supply, and has the advantages of uninterrupted water supply and the like.
Owner:GUANGDONG BILI DRINKING WATER EQUIPMENT CO LTD

Resource scheduling system and method based on multiobjective optimization

The invention provides a resource scheduling system based on multiobjective optimization. The resource scheduling system comprises a monitoring assembly, a cross-cloud management assembly, an overallscheduling assembly and a user management assembly, the assemblies can be deployed on different physical machines or virtual machines respectively, and can be deployed on the same physical machine orthe same virtual machine simultaneously. All assemblies can support high-availability deploy according to the business scenario. The invention further provides a resource scheduling method based on the multiobjective optimization. The method comprises the steps of monitoring information collection, life cycle management and dynamic scheduling of all subsidiary cloud environments. Under a cross-cloud environment, unified management of resources is conducted, and the utilization rate of all resource pools is balanced; under the cross-cloud environment, the user authority management is unified, and the use of important resources is preferably guaranteed; under the cross-cloud environment, all resource information is automatically collected, the resources are dynamically scheduled with the change of the business, and the resources are reasonably reallocated; cross-cloud scheduling and dynamic optimization are supported; SLA is supported, and the resources are more reasonably allocated; through monitoring and statistics, the data is persistent, and a visual interface is provided.
Owner:CETC CHINACLOUD INFORMATION TECH CO LTD

Off-grid and grid-connected integrated power supply control method and system

ActiveCN111799840ARealize communication monitoringEasy integrated operationLoad forecast in ac networkSingle network parallel feeding arrangementsPower qualityPower control system
The invention belongs to the technical field of power control and discloses an off-grid and grid-connected integrated power supply control method and system. The off-grid and grid-connected integratedpower supply control system comprises an electric energy acquisition module, a diesel power generation acquisition module, a wind power generation acquisition module, a photovoltaic power generationacquisition module, an electromagnetic switch control module, a central processing module, a wireless communication module, a remote terminal, a power generation module, a signal conversion module, anenergy management module and an electric quantity data analysis module. According to the invention, the integrated operation of the internal power supply and the load can be realized, and the requirements of users on distributed power supply access, electric energy quality, power supply reliability and safety are met. According to the invention, efficient conversion of each input energy source can be carried out on the premise of keeping the stability of the power grid, the intelligent distributed control management system can also ensure that renewable energy sources are used preferentiallyand efficiently, the consumption of fuel is reduced to the greatest extent, and stable, safe and reliable operation and energy supply of the whole system are ensured.
Owner:深圳市矿鑫发展有限公司

Automatic air curtain spraying switching control device for refuge chambers

The invention relates to an automatic control device, in particular to an automatic air curtain spraying switching control device for refuge chambers, and solves the technical problem to provide an automatic air curtain spraying switching control device which is simple in structure and convenient to use and can automatically switch air supply pipelines. According to the technical scheme, a mine air pressurizing air inlet pipe and a compressed air inlet pipe are connected to a pneumatic three-way ball valve, the mine air pressurizing air inlet pipe is communicated with a shuttle valve through a first pipeline, the compressed air inlet pipe is communicated with the shuttle valve through a second pipeline, the first pipeline is communicated with a two-position five-way air control valve through a third pipeline, an air outlet end of the shuttle valve is communicated with an air inlet end of the two-position five-way air control valve, an air outlet of the two-position five-way air control valve is respectively communicated with an air inlet and an air outlet of a rotary cylinder, and a piston rod of the rotary cylinder is connected with a control rod of the pneumatic three-way ball valve. The automatic air curtain spraying switching control device is mainly used for automatic switching of air curtain spraying devices of the refuge chambers.
Owner:CHANGZHI QINGHUA MACHINERY FACTORY +1

Dual-fuel gas preferential non-stop full-automatic switching system and control method thereof

The invention provides a dual-fuel gas preferential non-stop full-automatic switching system and a control method thereof. The dual-fuel gas preferential non-stop full-automatic switching system comprises a gas electromagnetic valve and a fuel electromagnetic valve, wherein the gas electromagnetic valve is arranged on a gas pipeline and used for connecting and disconnecting the gas pipeline to supply gas to an engine, and the fuel electromagnetic valve is arranged on a fuel pipeline and used for connecting and disconnecting the fuel pipeline to supply oil to the engine. The dual-fuel gas preferential non-stop full-automatic switching system further comprises an automatic switching switch. When the automatic switching switch monitors that the pressure value in a gas cylinder is larger thanor equal to a preset first pressure threshold value, the automatic switching switch closes or disconnects a power circuit of the gas electromagnetic valve and disconnects or closes a power circuit ofthe fuel electromagnetic valve. According to the dual-fuel gas preferential non-stop full-automatic switching system and the control method thereof, automatic oil-gas switching can be achieved, gas ispreferentially used, the fuel cost is saved, and the environmental protection awareness is enhanced.
Owner:CHONGQING DINKING POWER MACHINERY

Measurement and calculation system and method for remaining medicine in centralized purchase

The invention discloses a system and a method for measuring and calculating the remaining amount of medicine in centralized purchase. The method comprises the following steps: S1, acquiring basic business data of a medical institution; s2, according to the basic business data, obtaining a medicine weighted average price before collection; s3, establishing a remaining data calculation model, and obtaining a medical insurance remaining amount; and S4, according to the medical insurance remaining amount, obtaining the final medical insurance remaining amount. According to a computer system, the final medical insurance remaining amount is obtained through computer operation according to the weighted average prices of various drugs before collection and collection, the remaining amount utilization data calculation model is established, the working efficiency is greatly improved, the obtained final medical insurance remaining amount is high in reliability and credibility, and the method is suitable for popularization and application. The requirements of different users such as medical institutions and overall planning areas can be met, fair medical institutions and medical staff can be stimulated to preferentially use collected products, and smooth implementation of centralized procurement of national medical insurance drugs is promoted.
Owner:北京企通易久软件有限公司

A Natural Gas Oxygen-enriched Combustion System Using LNG Cold Energy for Air Separation Oxygen Production and Carbon Capture

The invention relates to a natural gas oxygen-enriched combustion system capable of using liquefied natural gas (LNG) cold energy for air separation oxygen-making and carbon capture. The system comprises an LNG cold energy air separation oxygen-making subsystem, an oxygen-enriched high-pressure water-adding combustion cycle power generation subsystem and a high-pressure liquid oxygen carbon capture subsystem; the LNG cold energy is applied to the air separation oxygen-making process of a natural gas oxygen-enriched combustion power plant, and carbon dioxide produced by oxygen-enriched combustion is recovered by condensation at the same time, so that zero emission of carbon is realized. The problems that the oxygen-enriched combustion power plant is high in energy consumption of air separation oxygen-making and high in carbon capture cost can be solved. Furthermore, a high-pressure liquid nitrogen recycling oxygen-making subsystem is additionally arranged, so that liquid nitrogen cold energy is further utilized, and the oxygen-making energy consumption is reduced; therefore, system energy efficiency level is improved. After the natural gas oxygen-enriched combustion system is adopted, the cold energy is continuously transmitted and used, and the two problems that the oxygen-enriched combustion power plant is high in energy consumption of air separation oxygen-making and high in carbon capture cost can be solved; the natural gas oxygen-enriched combustion system can be used for an electric system taking LNG as fuel.
Owner:HUAZHONG UNIV OF SCI & TECH
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