8results about How to "Avoid unstable factors" patented technology

The invention discloses a dynamic partitioning method and device for a power distribution network, electronic equipment and a storage medium, and the method comprises the steps: obtaining a scheduling plan of a typical day, inputting the scheduling plan into a power distribution network partitioning model, generating a first partitioning scheme of each scheduling moment, judging whether the voltage of each node at the first scheduling moment exceeds a preset range or not, and if yes, generating a second partitioning scheme; if the index exceeds the preset range, the index weight is adjusted to update the power distribution network partition model, a second partition scheme at the first scheduling moment is generated, and an actual partition scheme at the first scheduling moment is determined by comparing the score difference of the two partition schemes; and for other subsequent scheduling moments, determining an actual partition scheme of the current scheduling moment based on a difference value between the actual partition score and the actual partition score of the previous moment. By implementing the method, dynamic partitioning of the power distribution network can be realized, and the operation efficiency and reliability of the power distribution network are improved.

The utility model discloses a switch direct-current power supply with a filtering anti-burning circuit, which mainly solves the problem that the existing switch power supply is easy to short-circuit and cannot be used normally. The switch direct-current power supply comprises a full-bridge rectifier D connected in series with the input end of an alternating-current power supply, a power-on protection circuit connected with the input end of the alternating-current power supply, a surge protection circuit connected with the full-bridge rectifier D, a filtering anti-burning circuit connected with the surge protection circuit, and a short-circuit protection circuit connected with the filtering anti-burning circuit, and the direct-current output end is connected with the short-circuit protection circuit. Through the above design, the switch DC power supply effectively solves various unstable factors, such as voltage fluctuation, short circuit and surge, possibly encountered by a traditional DC power supply in a complex line and a severe environment through the accurately designed circuit assembly, thereby substantially improving the operation stability and safety of electronic equipment.

The utility model relates to the field of stamping dies, in particular to a vehicle body covering part side shaping die which comprises an upper die base, a lower die base and a side shaping assembly. A positive material pressing device is installed in the upper die base, and a fixed male die is installed in the lower die base. The side shaping assembly comprises a wedge, a side pressing device, a driving slotting tool, a pulley and a movable male die. The driving slotting tool is used for driving the pulley to slide in the sliding direction of the driving slotting tool after being pressed by the upper die base so as to obliquely and upwards push the movable male die to a target position matched with the fixed male die. A side shaping cutter block is connected in the inclined wedge; a side shaping guide plate is arranged at the bottom of the inclined wedge, so that the inclined wedge and the side material pressing device obliquely and downwards slide relative to the lower die base together until the side material pressing device and the side shaping cutter block are sequentially matched with the movable male die at the target position; the upper die base is provided with an anti-side base, and the top of the wedge is provided with an anti-side guide plate which abuts against the anti-side base to eliminate lateral force when the side shaping cutter block and the movable male die are matched for side shaping. By means of the structure, the quality, the size precision and the stability of a machined product can be guaranteed at the same time.

The utility model relates to the field of motion platforms, in particular to a magnetic assistance motion platform which comprises a base and a carrier plate, the base and the carrier plate are connected through a driving assembly, and the driving assembly can drive the carrier plate to reciprocate. The base is connected with a power assisting assembly, and the power assisting assembly comprises fixed magnetic steel fixedly connected to the base and movable magnetic steel fixedly connected to the carrier plate. The at least two fixed magnetic steels are symmetrically arranged on the two sides of the movable magnetic steel; the two pieces of movable magnetic steel are arranged in the moving direction of the carrier plate and are symmetrically connected through a metal block. And the metal block is arranged in the middle of the fixed magnetic steel in the moving direction of the carrier plate. By arranging the magnetic assistance assembly, the magnetic force and the load can be balanced, equivalently, the driving assembly is in zero-load driving, and the problem that the driving precision is affected by load heating of the driving device is greatly solved; and instability factors caused by the adoption of a spring in the prior art are avoided, so that the movement precision of the movement platform is further improved.

The utility model relates to the technical field of mine lifesaving, in particular to a mining safety lifesaving device which comprises a fixed seat, telescopic rods which are symmetrically distributed are fixedly installed on the two sides of the top of the fixed seat, a cabin body is fixedly installed at the telescopic ends of the telescopic rods, and limiting grooves are formed in the front side and the rear side of the top of the fixed seat. According to the safety lifesaving device for mining, through cooperative use of the fixing base, the capsule body, the telescopic rod, the supporting arm, the threaded rod, a limiting groove, an adjusting block, a worm, a transmission box, a motor and a worm wheel, adjustment of the vertical height of the lifesaving capsule is achieved in a mechanical driving mode, so that the lifesaving capsule can be away from the bottom face, and the safety of mining is improved. According to the lifesaving device, the mechanical driving lifting mode is adopted, so that the influence of mudstone and various unknown liquids in a mine is effectively avoided, the safety of the lifesaving device is improved, and the mechanical driving lifting mode not only ensures the stability of the adjusting process, but also avoids unstable factors possibly caused by manual adjustment.

The utility model discloses a rapid steel wire rope winding and unwinding device which comprises a base plate (1), a rotating disc (2), a guiding device (3) and a rope winding and unwinding cage (4). The turntable (2) is located at the upper part of the chassis (1) and is rotationally connected with the chassis (1), the guide device (3) comprises a guide pulley (3-1) for guiding a steel wire rope, the rope winding and unwinding cage (4) is fixed on the turntable (2) and is formed by connecting a plurality of pipes, a rope winding space is formed in the rope winding and unwinding cage (4), and an opening is formed in the top of the rope winding and unwinding cage (4). And the steel wire rope can be wound outside the rope winding and unwinding cage (4), and when the rope is wound, the steel wire rope can be stored in the rope winding space through the opening. The steel wire rope replacing device is convenient to operate, saves manpower, effectively reduces the labor amount of personnel, shortens the replacing time, improves the replacing efficiency and reliability, and effectively prolongs the service life of the steel wire rope.

The invention belongs to the technical field of primary frequency modulation of a thermal power generating unit, and particularly relates to a control method for improving the primary frequency modulation action qualification rate of the thermal power generating unit. Comprising the following steps: S1, converting a main transformer high-voltage side frequency signal collected by a frequency transmitter into a rotating speed signal after grid connection of a unit, and when the frequency signal participating in primary frequency modulation after grid connection of the unit fails, switching back to an original primary frequency modulation loop of the unit; s2, calculating the contribution rate of the primary frequency modulation of the unit; s3, constructing a unit primary frequency modulation contribution rate compensation logic; s4, constructing valve position factor compensation logic; and S5, constructing power factor compensation logic. When the thermal power generating unit carries out primary frequency modulation action, it is guaranteed that the control valve of the unit does not act violently, and it is also guaranteed that the theoretical action amount of primary frequency modulation meets related requirements.

This utility model belongs to the technical field of metallurgical casting production equipment, and relates to a vacuum casting trolley system, including a casting ladle, a trolley body, a locking device, a movable support frame, and a lifting device. Its operation is interference-free; upon reaching the casting position, it automatically locks, and a hydraulic cylinder drives the pouring port of the sliding gate at the bottom of the ladle to descend into the receiving port of the tundish for casting. After casting, the hydraulic cylinder lifts the ladle back to its original position, and the trolley returns to its initial position. This utility model has a simple and reliable structure, effectively solving the problems of frequent malfunctions, high risk of molten steel leakage, poor casting stability, high operational difficulty, and a dirty environment associated with traditional crane-lifted ladle casting equipment. It significantly improves production efficiency, casting quality, and safety, reduces labor and equipment costs, and improves the production environment and worker occupational health conditions. It has broad application prospects and significant practical value in the iron and steel metallurgy field.