CN-120222704-B - Power fluctuation device of energy storage type smooth generator

CN120222704BCN 120222704 BCN120222704 BCN 120222704BCN-120222704-B

Abstract

The invention relates to the technical field of renewable energy power generation system management, and discloses an energy storage type smooth generator power fluctuation device which comprises a planetary gear set, a cylinder body connected with the planetary gear set, a rope wound on the cylinder body and an energy storage structure connected with one end of the rope, wherein the planetary gear set comprises a planet carrier, planet pinions, sun gears and gear rings, at least two ropes, the beginning end of each rope is composed of a winding section, a separating section and a connecting section which are sequentially connected from the beginning end to the tail end, the beginning end of each rope is fixedly connected with one end or the gear ring of the cylinder body connected with the planetary gear set, the winding sections are synchronously wound outside the cylinder body side by side, the separating sections are tangent with the cylinder body, and all the separating sections are distributed along the circumferential direction of the cylinder body at equal intervals. The invention converts most of fluctuation part of work born by the generator into gravitational potential energy to be stored or released by arranging the planetary gear set, the cylinder, the rope and the energy storage structure.

Inventors

WANG WEIJING
REN BO
YANG DAGANG
WANG GUOQIANG
SHI NIANFENG
LU DAN
PENG HUILING
LI HUANLI

Assignees

洛阳理工学院
北京力美源建筑科技有限公司

Dates

Publication Date: 20260505
Application Date: 20250325

Claims (9)

1. The power fluctuation device of the energy storage type smooth generator is characterized by comprising a planetary gear set, a cylinder (2) connected with the planetary gear set, a rope wound on the cylinder (2) and an energy storage structure connected with one end of the rope; the planetary gear set comprises a planet carrier (8), a planet pinion (9), a sun gear (10) and a gear ring (11); The planetary gear set comprises a barrel (2), at least two ropes, a gear ring (11), a gear ring and a gear ring, wherein the two ropes are formed by a winding section, a separating section and a connecting section which are sequentially connected from the starting end to the tail end; The cylinder body (2) at least comprises a small torque constant section, a continuous torque variable section and a large torque constant section which are connected in sequence; The low torque constant section corresponds to the minimum starting power of the generator, the high torque constant section corresponds to the maximum rated power of the generator, at least one slope of a bus of the continuous variable torque section is set according to the corresponding set curve slope of the generator torque curve, and if more than one slope exists, the continuous variable torque section is sequentially connected in a smooth manner.
2. The power fluctuation device of an energy storage type smoothing generator as set forth in claim 1, wherein said connecting section is fixedly connected to said energy storage structure after bypassing said fixed pulley from an end connected to said separating section.
3. The power fluctuation device of the energy storage type smooth generator according to claim 1, wherein a limiting clamping groove (7) is formed in the outside of the cylinder body (2) in a spiral shape, and the rope is located in the limiting clamping groove (7).
4. The power fluctuation device of an energy storage type smooth generator according to claim 2, wherein the energy storage structure is a gravity energy storage structure or an elastic energy storage structure.
5. The power fluctuation device of an energy storage type smoothing generator as set forth in claim 4, wherein said gravity energy storage structure comprises a weight connected to said separation section, and an upper elastic stopper (601) and a lower elastic stopper (602) provided above and below said weight at a distance, respectively.
6. The power fluctuation device of the energy storage type smooth generator according to claim 1, wherein the cylinder body (2) is integrally arranged with the gear ring (11) or detachably and fixedly connected.
7. The power fluctuation device of an energy storage type smooth generator according to claim 1, wherein a bearing (1) is arranged outside or inside the gear ring (11).
8. The power fluctuation device of the energy storage type smooth generator according to claim 5, wherein when the number of the ropes is two, the power fluctuation device comprises a first rope (301) and a second rope (302), the separation section of the first rope (301) and the separation section of the second rope (302) are symmetrically arranged outside the cylinder (2), the fixed pulleys comprise a first fixed pulley (401) and a second fixed pulley (402), and the weight comprises a first weight (501) connected with the first rope (301) and a second weight (502) connected with the second rope (302).
9. The energy storage type smooth generator power fluctuation device as set forth in claim 1, wherein said planetary gear set is replaced with a conical gear differential.

Description

Power fluctuation device of energy storage type smooth generator Technical Field The invention relates to the technical field of renewable energy power generation system management, in particular to an energy storage type smooth generator power fluctuation device. Background The renewable energy sources with wider application are wind power generation and hydroelectric power generation, and other types of renewable energy sources are greatly limited in power generation types, but wind power generation is obviously influenced by wind speed randomness, turbulence intensity and topography, water energy is totally stable and can also generate short-time fluctuation due to turbulence, and the fluctuation can generate power fluctuation when corresponding power generation equipment runs, and the power generated by suddenly increased or reduced power is basically born by a generator, so that the power generation equipment, the power generation efficiency, the effect and the like are influenced in multiple aspects. For example, in wind power generation, power sudden change can cause impeller rotation speed fluctuation, so that components such as a gear box and a bearing bear extra mechanical stress, the service life of equipment is shortened, the efficiency of a unit is reduced, electromagnetic balance of a generator is disturbed, the quality of electric energy is influenced, large-scale power fluctuation can cause power grid frequency deviation and voltage flicker, system stability is threatened, a speed changing unit needs to frequently adjust pitch angle or slip ratio to maintain power stability, and complexity and energy consumption of a control system are increased. The suddenly increased power breaks through the maximum rated upper limit of the motor and damages the motor. In the prior art, methods for suppressing fluctuation or reducing influence are adopted in most cases, or the negative influence of power fluctuation on a generator and a power grid is reduced through cooperation of multidimensional technology. But does not take into account how to utilize the wasted energy from the power generation equipment to convert it into electrical energy when the power fluctuates, and therefore a device is needed that stores the peak work of the fluctuation off-peak. Disclosure of Invention The invention aims to overcome the defects in the prior art, provide an energy storage type smooth generator power fluctuation device, and convert most fluctuation power born by a generator into gravitational potential energy for storage and release by arranging a planetary gear set, a cylinder body, a rope and an energy storage structure, and also can reduce the maximum rated power required by a motor. The energy storage type smooth generator power fluctuation device comprises a planetary gear set, a cylinder body connected with the planetary gear set, a rope wound on the cylinder body and an energy storage structure connected with one end of the rope; the planetary gear set comprises a planet carrier, a planet pinion, a sun gear and a gear ring; The two ropes are at least two, each rope is composed of a winding section, a separating section and a connecting section which are sequentially connected from the starting end to the tail end, the starting end of each rope is fixedly connected to one end or a gear ring of the cylinder body, which is connected with the planetary gear set, the winding sections are synchronously wound outside the cylinder body side by side, the separating sections are tangent to the cylinder body, and all the separating sections are distributed along the circumferential direction of the cylinder body at equal intervals. Further, the connecting section is fixedly connected with the energy storage structure after bypassing the fixed pulley from one end connected with the separating section. Further, the outside of the cylinder body is provided with a limit clamping groove in a spiral shape, and the rope is positioned in the limit clamping groove. Further, the energy storage structure is a gravity energy storage structure or an elastic energy storage structure. Further, the gravity energy storage structure comprises a weight connected with the separation section, and an upper elastic limiter and a lower elastic limiter which are respectively arranged above and below the weight at intervals. Further, the cylinder body and the gear ring are integrally arranged or detachably and fixedly connected. Further, the cylinder body at least comprises a small torque constant section, a continuous torque variable section and a large torque constant section which are connected in sequence. Further, a bearing is arranged outside or inside the gear ring. Further, when two ropes are provided, the first rope and the second rope are included, the separation section of the first rope and the separation section of the second rope are symmetrically arranged outside the cylinder, the fixed pulleys comprise a first fixed pulley and