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40results about How to "Guarantee a safe space" patented technology

Power generation margin distribution method for photovoltaic power station based on power grid security constraints

The invention relates to a power generation margin distribution method for a photovoltaic power station based on power grid security constraints and belongs to the field of running and control technologies of new energy electric power systems. The power generation margin distribution method for the photovoltaic power station based on power grid security constraints includes that according to a fair scheduling principle, after the photovoltaic power station enters a free power generation state, the space of a power grid for performing photovoltaic power generation is uniformly distributed for each photovoltaic power station according to a minimum load rate deviation method, on the one hand, unnecessary photovoltaic power discarding due to a too small active set value of the photovoltaic power generation is avoided, and on the other hand, the problem that the power output by the photovoltaic power generation surpasses the power grid bearing capacity due to a too large active set value due to distributing the photovoltaic power generation capacity is avoided. The power generation margin distribution method for the photovoltaic power station based on power grid security constraints is integrated in a photovoltaic power generation active control master station run by a dispatching center to enable the system to implement an optimal control strategy in real time according to the photovoltaic power generation running state and the power grid running state, maintain enough backspin security space for the power grid, guarantee the active power security of the section of a connecting wire of the photovoltaic power station and the power grid and guarantee the fair scheduling among the photovoltaic power stations.
Owner:TSINGHUA UNIV +2

Time sequence progressive power dispatching method

ActiveCN101752903BOptimizing mid-term operational benefitsReduce start-stop costsCircuit arrangementsThree levelLoad forecasting
The invention relates to a time sequence progressive power dispatching method, belonging to the technical field of power dispatching automatization, comprising setting three-level dispatching time sequence steps of monthly power generation scheme, weekly power generation scheme, daily power generation scheme; a dispatching center configures a monthly power generation scheme mould of the next month according to the overhaul management information of each set and monthly load prediction information in the electric power plant of the next month and the planned electric quantity of the next monthof each set to obtain the monthly power generation scheme of the next month; the dispatching center configures and solves a weekly power generation scheme mould of the next week according to the monthly power generation scheme of the current month to obtain the weekly power generation scheme of the next week; and the dispatching center configures and solves a daily power generation scheme mould according to the weekly power generation scheme of the current week to obtain the daily power generation scheme issued for power plant for carrying out within t+1 days; the practical generating capacity of each electric power plant is accounted at t+2 day, daily-weekly feedback is carried out at t+2 day, and daily-monthly feedback is carried out at the end of the current month. The method can guidesafe and economic operation of electric system better.
Owner:TSINGHUA UNIV

Microgravity vertical lifting initiative anti-collision system and anti-collision method thereof

The invention relates to a microgravity vertical lifting initiative anti-collision system which comprises a vehicle body, wherein a plurality of propellers are arranged on the vehicle body; rotatable propellers are arranged on the two sides of a vehicle head and a vehicle tail and other important parts; a vertical lifting propeller is arranged on a middle chassis; a directional propeller is respectively mounted in a foldable contracted hidden form on the front side and rear side of the vehicle; the directional propeller can move front and back as well as left and right in a parallel form, randomly steer and turn in air. According to the initiative anti-collision system provided by the invention, the propellers are arranged on the periphery of the vehicle body, so that the vehicle can instantly realize vertical lift; and meanwhile, under the effect of inertia, the initiative collision resistance acts in the whole running process of the vehicle; the anti-collision space is changed, so that the collisions between vehicles and the collision accidents between vehicles and barriers are thoroughly prevented; the vehicle is in an ultra-safe place; the system is not limited by any pavements and barriers; the system can freely and stably work in a suspension form in air at anywhere, anytime and on any roads.
Owner:邱洪武

Fire evacuation room

The present invention relates to a fire evacuation room that provides a space installed indoors in a high-rise building such as an apartment block so as to provide a person who is unable to escape outside with a space in which to safely take refuge. The present invention can be installed indoors in an apartment or in a basement of a building as desired so as to enable a person unable to evacuate outside the building to safely evacuate, wherein a predetermined pressure differential can be constantly produced by suitably controlling the amount of air entering the evacuation space and the amount of air leaving the evacuation space, thereby compensating for the occurrence of leaks inside the evacuation space by damage due to falling objects and the like, and thus a fire evacuation room can be provided that completely mitigates a shortage of air for breathing. Furthermore, the present invention can provide a fire evacuation room that can improve the overall efficiency of the system for air provision by unified operation of the air supply for each fire evacuation room installed on each story of a building by connecting the various air intake pipes to pipes of the ventilation system of the building or to separate pipes of the blower equipment inside the building. In addition, an air forced discharge fan which is installed in the interior wall surface inside the evacuation space is linked in operation to opening and closing of a door so as to actuate the air forced discharge fan, so as to be able to forcibly discharge air inside the evacuation space when the door is open and consequently, the evacuation space is able to block the entry of smoke or heat to the inside from the outside. In addition, the present invention provides a fire evacuation room wherein a branch pipe is formed on one side of an air intake pipe through which air flows into the inside of the evacuation room main body, and a filter device capable of purifying toxic gas such as smoke, in addition to oxygen generator that generates oxygen, is installed on the branch pipe so as to block the entry of external toxic gas while simultaneously supplying air to the inside of the evacuation room main body for evacuees to breathe, or by operating an air storage tank by utilizing the frame space of the evacuation room main body, so as to implement a new system that supplies air into the inside of the evacuation room main body for evacuees to breathe, thereby completely eliminating such problems as toxic gas flowing inside the fire evacuation room and protecting the safety of evacuees to the maximum.
Owner:E&F TECH CO LTD

Architectural acoustics transforming method for inflatable air film pavilion

The invention provides an architectural acoustics transforming method for an inflatable air film pavilion. Sound absorption materials are mounted on the interior decorating surface of an air film through internal riveting fixing members in inclined, empty-rear-type and staggered modes. According to the architectural acoustics transforming method, the soft sound absorption materials are mounted onthe interior decorating surface of the air film through the internal riveting fixing members in the inclined, empty-rear-type and staggered modes, it is ensured that a certain safety space is formed between the soft sound absorption materials and the wall face of the inner wall of the air film, and the influence of swing of the air film due to wind load shaking on mounting of the sound absorptionmaterials can be effectively avoided; the contact area between the sound absorption materials and the space in the air film pavilion is effectively increased, meanwhile, a cavity in the wall face is additionally formed, and the low sound frequency can be effectively controlled; and the mounting mode is easy and stable, optional coverage mounting can be achieved, the mounting density is freely adjusted, and the problems of acoustic focus and the like are effectively solved.
Owner:NANJING PIONE HIGH TECH +1

Counterweight side-falling elevator structure

The invention discloses a counterweight side-falling elevator structure. The structure is characterized in that a traction steel wire rope enters a first counterweight rope return wheel arranged at the top end of the rear part of a counterweight through a traction machine wheel and a machine room guide wheel, enters a first counterweight guide wheel after being guided by the first counterweight rope return wheel and is horizontally and forwards transmitted into a second counterweight guide wheel, and the second counterweight guide wheel is used for ensuring that the traction steel wire rope vertically falls into a second counterweight rope return wheel arranged at the top end of the front part of the counterweight and is finally suspended to a counterweight rope head bearing beam. According to the arrangement mode, the traction steel wire rope enters the two counterweight rope return wheels arranged at the upper end of the counterweight from the adjacent side, the counterweight can move backwards by a distance equal to the diameter of the counterweight rope return wheel, so that the counterweight is placed in the middle in the front-back direction as much as possible, the counterweight is far away from a car door plate assembly located on the front side of an elevator car as much as possible, the safety space between the counterweight and a hoistway, the elevator car and the car door plate assembly is guaranteed, and even if the traction machine wheel and the machine room guide wheel are not placed obliquely, the distance between the counterweight and the car door plate assembly can be larger than the safety distance.
Owner:YUNGTAY ELEVATOR EQUIP CHINA
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