6results about How to "Reduce power generation" patented technology

The invention discloses a full-direct-current offshore wind power system zero-voltage ride-through method, equipment and a medium, and relates to the field of full-direct-current offshore wind power. The objective of the invention is to solve the problem that a receiving-end converter station cannot transmit power when a land AC power grid breaks down. When the high-voltage direct-current voltage of the offshore direct-current transformer exceeds the first preset threshold value, the medium-voltage direct-current voltage control of the offshore direct-current transformer is switched to the high-voltage direct-current voltage control, so that the offshore direct-current transformer absorbs power from a high-voltage direct-current link; when the medium-voltage direct-current voltage of the fan direct-current transformer exceeds a second preset threshold value, the fan direct-current transformer is switched from low-voltage direct-current voltage control to medium-voltage direct-current voltage control, so that the fan direct-current transformer can absorb power from the low-voltage direct-current voltage side through a fan grid-side direct-current transformer; and when the low-voltage direct-current voltage of the offshore direct-current transformer exceeds a third preset threshold value, the brake resistor is activated to dissipate surplus power until the low-voltage direct-current voltage is lower than a fourth preset threshold value.

The invention provides a hybrid energy storage charge state control method and device, and the method comprises the steps: predicting the daily generating capacity of a photovoltaic power station according to a historical database; according to the historical database, the occurrence probability of the extreme weather in the target time period is judged; when the occurrence probability is high, judging the severity of the extreme weather in the target time period; predicting the duration of the extreme weather according to the severity; predicting the daily generating capacity of the photovoltaic power station in extreme weather according to the severity; according to the work plan, obtaining the daily power consumption when the extreme weather occurs; and according to the extreme weather duration, the extreme weather generating capacity and the power consumption, obtaining target power storage capacity. According to the invention, at least the required electric quantity is predicted before the extreme weather, and a part of electric quantity is stored before the extreme weather for emergency use, so that equipment damage caused by unstable current in the extreme weather is avoided, and the power utilization cost is reduced.

The invention relates to the field of oil field energy supply, and discloses an oil field united station energy supply system and method based on carbon dioxide energy storage and waste water hydrogen production. The carbon dioxide energy storage device is configured to selectively store or release electric energy by using carbon dioxide generated by the oil field united station; the production load comprises a hydrogen production device, and the hydrogen production device is configured to produce hydrogen by using the production wastewater of the oil field united station; the power distribution device is electrically connected with the clean energy power generation device, the carbon dioxide energy storage device and the hydrogen production device; and the energy management device monitors the power generation power of the clean energy power generation device and the electricity utilization power of the production load, and controls the operation of the carbon dioxide energy storage device according to the power generation power and the electricity utilization power. The safe, efficient and stable energy supply system can be provided, the discharge amount of carbon dioxide and waste water can be reduced, and the utilization rate of clean energy is increased.

The utility model relates to the technical field of regulator, concretely relates to a regulator with temperature protection function, regulator body, back cover, integrated circuit and temperature sensor, the recess is arranged to the lower surface of regulator body, the back cover can be connected in the recess along the mouth and is formed with the cavity structure with the recess cooperation, the integrated circuit is arranged in the cavity structure, the boss is arranged on the back cover, the boss is hollow structure, the temperature sensor is arranged in the lower end in this boss, the temperature sensor is connected on the integrated circuit through the wire, among them, the regulator with temperature protection function is installed on the generator back cover, the boss lower end can contact the copper line on the stator assembly of generator. The boss contacts on the copper line on the stator assembly, the heat that the copper line of stator assembly sends out can be passed through the boss and is delivered to the temperature sensor in the working process of generator, the temperature sensor is connected with the integrated circuit, and the integrated circuit adjusts the duty cycle of generator through the temperature value of measurement.

The invention discloses a method and a system for processing heavy soda ash by utilizing nuclear energy combined heat and power generation energy supply, and relates to the technical field of trona production. The method comprises the following steps: pretreating brine to obtain refined brine; carrying out steam stripping decomposition on the refined brine by using nuclear energy combined heat and power generation steam to obtain concentrated brine with Na2CO3 as a main component; the method comprises the following steps: carrying out multiple-effect evaporation on concentrated brine of which the main component is Na2CO3 by using nuclear energy combined heat and power generation steam, wherein Na2CO3 is separated out in a monohydrate sodium carbonate Na2CO3.H2O crystal form; carrying out centrifugal drying treatment on the monohydrate alkali crystal and the mother liquor by utilizing nuclear energy combined heat and power generation electric energy; and calcining the dried material by using nuclear energy combined heat and power generation steam to remove crystal water in the dried material, thereby obtaining the heavy sodium carbonate Na2CO3. According to the invention, the steam production quantity of the nuclear reactor is increased, and the steam power generation quantity of the nuclear reactor is correspondingly reduced, so that a large amount of energy loss generated when low-grade energy is converted into high-grade energy is reduced, and the overall efficiency is improved.

The invention discloses a power generation device capable of adjusting the windward area of fan blades. The power generation device comprises a supporting mechanism, an impeller power generation mechanism, a fan blade windward direction changing mechanism and an intelligent control system. According to the power generation device, the fan blade windward turning mechanism is arranged on the inner side of the front section of the fan blade, on one hand, the diameter of the fan blade can be infinitely large, on the other hand, the manufacturing difficulty of the fan blade turning track is reduced, and transportation and installation are facilitated; the fan blade windward turning rails can rotate relatively and are provided with telescopic components capable of enabling the fan blade windward turning rails to move up and down, so that the directions of the fan blades are changed, the windward area is changed, the generating capacity of the whole device is reduced, on one hand, damage caused by overload of the generator is prevented, and on the other hand, damage to the whole device due to large windward stress of the fan blades is avoided. The stability is improved; in addition, an existing large-size driving gear structure is changed through a power generation rotating shaft and a multi-stage gear, the machining process and installation and transportation difficulty of the whole device are greatly reduced, and the requirement that the fan blades can be infinitely large is further met.