16 results about "Renewable energy" patented technology

A power and control module for a Power over Ethernet (PoE) light emitting diode (LED) lighting system includes an input channel for receiving PoE input power from a PoE switch, an output channel for providing PoE output power to a plurality of LED light fixtures and a power transfer unit coupled between the input and output channel for providing the PoE input power and/or a secondary input power to the output channel as the PoE output power. A secondary power input unit selectively provides secondary power to the power transfer unit. A processor is controls the power transfer unit to adjust an amount of PoE input power and secondary input power to obtain the PoE output power. Secondary input power can be an emergency power source during line power outages. Secondary input power could be a renewable energy power source used preferentially to the PoE input power when available.

The invention relates to a multi-target random fuzzy dynamic optimal energy flow modeling and solving method for a multi-energy coupling transmission and distribution network and belongs to the field of day-ahead scheduling plan research of electric power systems in an energy interconnection environment. The method comprises the following steps: basic data in a system scheduling period are obtained,; random fuzzy space-time sequence models for large-scale wind power, distributed power source and multi-energy loads are obtained via historical data mining; power and voltages of a power transmission network and all active distribution networks at joint nodes are used as share variables; multi-target SoS dynamic optimal energy flow models characterized by high economic performance, low carbon emission, renewable energy absorption, loss reduction and the like are built within static state security constraints; multi-energy source charge forecast can be realized through random fuzzy simulation; a Pareto solution set, an optimal compromise solution and an energy flow result can be obtained via adoption of an improved SoS layered optimizetion algorithm based on approximate dynamic programming and NSGA-11. The method can adapt to a development trend of energy interconnection, and comprehensive coordination optimization of day-ahead scheduling of transmission and distribution parties can be realized on the premise that requirements for static state safety and stabilization of systems can be satisfied.

The invention provides a pilot node selecting method based on wind electric power fluctuation probability characters. Due to the fact that large-scale renewable energy resources are merged into a control area, Fluctuations and trends of currents are changed greatly, and many challenges are brought to area voltage reactive power control. Pilot nods are as primary goals of secondary voltages, when the pilot nods are selected, access of renewable energy resources needed to be considered. According to the pilot node selecting method based on the wind electric power fluctuation probability characters, access of wind power is as an example, statistics of power injection probability distribution characters of a wind power plant in different periods is carried out, various system random working states with different probabilities are formed through superposition of the power injection probability distribution characters and load working modes of peaks, waists and valleys of a system, selected pilot nodes satisfy that after the system is subject to random disturbance, voltage deviation expectation of the rest load nodes in the whole net is made to be minimum under various random working states through control and elimination of voltage deviations of the selected pilot nodes. Feasibility and validity of the pilot node selecting method based on the wind electric power fluctuation probability characters are verified by IEEE three-machine-nine-node system simulation results and New England 39-node system simulation results.

The invention relates to a distributed resource transaction method of a microgrid community under a multi-agent framework. The method includes three iterative electricity price clearing layers. The first layer is used for operating optimization calculation in the microgrid. The second layer is used for operating scheduling optimization calculation in an aggregator. The third layer is used for transaction calculation between the aggregators. Each of the three iterative electricity price clearing layers performs real-time electricity price settlement, and achieves, from local to overall, benefit maximization of the microgrid, the aggregators, and the microgrid community respectively. In each phase of the iteration, distributed resource owners and the aggregators can calculate profits by the method in the present invention, thereby making the market clearing process clearer. The mode optimizes the configuration of distributed resources within the microgrid community while ensuring the benefits of all market participants, thereby ensuring the safety of each microgrid, ensuring the reasonable income for the distributed resource owners, and enhancing the overall balance capacity of renewable energy by price excitation.

The invention relates to the technical field of power market, in particular to an estimation method for capability of accepting a renewable energy source in a middle period of a power grid. Factors affecting the capability of accepting the renewable energy source in the middle period of the power grid comprise system average economic peak regulation capability, system average peak regulation demand and power grid external transmission passage, an index for estimating the capability of accepting the renewable energy source in the middle period of the power grid is system average peak regulation adequacy, and the capability of accepting the renewable energy source in the middle period of the power grid is estimated by solving the system average peak regulation adequacy. A special estimation method for the capability of accepting the renewable energy source in the middle period of the power grid is given out by the invention, and the estimation method has the advantages of comprehensive consideration and high applicability, and is simple and convenient to operate.

The invention discloses a stochastic production simulation method of combined heat and power of an integrated energy system, Installations and equipment, Considering that energy sources other than power units, such as renewable energy, can also have an impact on integrated energy systems. At first, that net power sequential load data is separated from the power sequential load data, according to the net power sequential load data and the heat load data, the initial joint probability density function of thermoelectricity is constructed, to ensure the accuracy of the initial thermoelectric jointprobability density function, by simulating the operation of the unit in the integrated energy system, according to the unit performance index, the initial combined thermoelectric probability densityfunction is modified to obtain the equivalent combined thermoelectric probability density function, Finally, the reliability index and economic index of the integrated energy system calculated by theequivalent thermoelectric joint probability density function are more consistent with the characteristics of multi-energy coordination and coexistence of the integrated energy system, and the accurate evaluation of the reliability and economic value of the integrated energy system is realized.

An objective of the present invention is to provide an energy conversion and storage equipment which is capable of efficiently generating hydrogen using varying electric power generated from renewable energy and is capable of storing the hydrogen. The invention is an apparatus for converting and storing renewable energy in which hydrogen is produced with a water electrolysis device using the varying electric power generated in renewable-energy equipment and the hydrogen is stored, the apparatus being characterized in that the water electrolysis device includes an oxygen generation electrode which comprises an Ir—Mn alloy oxide. Due to the application of the electrode, with which water can be electrolyzed using the varying electric power generated from renewable energy, the system suffers little electrode deterioration even when the varying electric power is used, and it is possible to highly efficiently produce and store hydrogen for a long period.

The invention discloses a control system for applying renewable energy sources to buildings. The control system comprises a control module, and a remote management terminal is connected to the front end of a wireless communication module which is connected to the front end of the control module. The control module is connected with a temperature sensor, a humidity sensor and a brightness sensor and is further connected with a control circuit. The control module comprises a computer, a central processing unit, an electromagnetic switch and a power supply device. The computer is connected with the central processing unit, an output end of the central processing unit is connected with the electromagnetic switch which is connected with the power supply device, and an output end of the controlcircuit is connected with a heating/refrigerating system, an air supply system and an illuminating system. By the control system, automatic indoor temperature, humidity and brightness regulation can be realized to make an indoor environment more appropriate, practical requirements are met, and the control system is suitable for popularization.

The invention discloses a solar photo-thermal system and ground source heat pump system coupled composite energy supply system. The composite energy supply system comprises a solar thermal collector,a lithium bromide absorption type refrigerating unit, a heat exchanger, a heat storage device and a ground source heat pump. According to the composite energy supply system, solar energy and geothermal energy are coupled and integrated, so that complementation of advantages of the two renewable energy sources is achieved, and the energy utilization rate of the system is further improve; and compared with an existing split type air conditioner energy supply mode of rural residence buildings in Huna Province, the renewable energy utilization efficiency is greatly improved, and furthermore, a newidea for sustainable development of the environment is provided, so that great practical significance is achieved.

The invention discloses a wind-solar hybrid power-generation caution guardrail, which comprises a wind-driven generator, a solar cell module, caution lamps, an intelligent charging and discharging controller and an accumulator storage battery, wherein the wind-driven generator and the solar cell module are fixedly arranged on the top surface of the guardrail; the caution lamps are arranged on at two longitudinal sides of the guardrail; the intelligent charging and discharging controller and the accumulator storage battery are arranged at the inner side of the guardrail; and the intelligent charging and discharging controller is connected to the wind-driven generator, the solar cell module, the caution lamps and the accumulator storage battery by guide wires. The wind-solar power-generator caution guardrail provided by the invention utilizes renewable energy sources to enable the caution lamps to work, is green and environment-friendly, and has the advantages of beautifying urban traffic landscape construction to form beautiful urban landscape.

The invention discloses an ethanol compound fuel, which consists of the following components in percentage by volume: 20 to 60 percent of ethanol, 10 to 30 percent of propane, 5 to 30 percent of C5 and 2 to 30 percent of isopropyl ether. The fuel effectively utilizes the renewable energy, has high combustion efficiency and is suitable to be used as an automobile-used alternative fuel.