CN111313253A - Neutral point grounding resistance cabinet for wind power system - Google Patents
Neutral point grounding resistance cabinet for wind power system Download PDFInfo
- Publication number
- CN111313253A CN111313253A CN202010194454.2A CN202010194454A CN111313253A CN 111313253 A CN111313253 A CN 111313253A CN 202010194454 A CN202010194454 A CN 202010194454A CN 111313253 A CN111313253 A CN 111313253A
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- Prior art keywords
- fixedly connected
- gear
- movable block
- cabinet
- cabinet body
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/26—Casings; Parts thereof or accessories therefor
- H02B1/30—Cabinet-type casings; Parts thereof or accessories therefor
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/26—Casings; Parts thereof or accessories therefor
- H02B1/28—Casings; Parts thereof or accessories therefor dustproof, splashproof, drip-proof, waterproof or flameproof
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/56—Cooling; Ventilation
- H02B1/565—Cooling; Ventilation for cabinets
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
Abstract
The invention discloses a neutral point grounding resistor cabinet for a wind power system, which relates to the technical field of circuit monitoring devices and comprises a cabinet body, wherein the bottom of the cabinet body is provided with a bottom plate, the bottom plate is provided with a first vent hole, the periphery of the bottom plate is fixedly connected with a side plate, the side plate is fixedly connected to a base plate, the side plate is provided with an air inlet, the base plate is fixedly connected with a guide rail, the guide rail is provided with a screw rod parallel to the guide rail, a movable block penetrates through the guide rail, a first driving motor is fixedly installed on the movable block, and an output shaft of the first driving motor is fixedly connected with fan blades. The invention realizes the heat dissipation of the circuit elements in the cabinet body, and improves the heat dissipation effect by blowing cold air in the moving way.
Description
The technical field is as follows:
the invention relates to the technical field of resistor cabinets, in particular to a neutral point grounding resistor cabinet for a wind power system.
Background art:
wind power generation, which is wind power generation, refers to converting kinetic energy generated by wind into electric energy. Wind energy is a green renewable energy source, and under the current policy requirements of environmental protection, energy conservation and emission reduction, wind power generation has obvious economic advantages.
A resistor cabinet in a wind power system is used for grounding a neutral point in a circuit with high resistance so as to limit grounding current and prevent various overvoltage hazards. The neutral point can limit the fault current to a proper value by grounding the resistor, the sensitivity of relay protection is improved to act on tripping, meanwhile, the fault point is only possible to be locally slightly burnt, the transient overvoltage is limited to a specified range of normal line voltage to neutral point voltage, the restriking of electric arc is limited, the overvoltage of arc light gap is prevented from damaging the main equipment, and meanwhile, the ferromagnetic resonance overvoltage can be effectively prevented, so that the safe operation of the equipment is ensured.
The neutral point of the transformer in the wind power system can effectively limit the clearance arc light grounding overvoltage through the resistor grounding male, reduce the system operation overvoltage, eliminate the system resonance overvoltage, conveniently configure single-phase grounding fault protection and effectively cut off a fault circuit in a short time. Therefore, the insulation level of the system equipment is reduced, the service life of the system equipment is prolonged, and the safe reliability of the system operation is improved, so that the system equipment is widely applied.
The existing resistor cabinet equipment is of a cabinet type structure, a circuit system is arranged in a cabinet body, and the cabinet body of the resistor cabinet is arranged on the surface of a cement building. The resistor cabinet monitoring device can emit heat in the using process, the existing resistor cabinet is poor in heat dissipation effect, the heat is gathered in a circuit system to reduce the service life of the resistor cabinet monitoring device, and the use of the resistor cabinet is influenced.
The invention content is as follows:
the invention aims to at least solve the technical problems that the existing resistor cabinet is poor in heat dissipation effect, heat is accumulated in a circuit system to cause the service life of a resistor cabinet monitoring device to be shortened, and the use of the resistor cabinet is influenced, and provides a neutral point grounding resistor cabinet for a wind power system.
In order to achieve the purpose, the invention adopts the following technical scheme:
a neutral point grounding resistor cabinet for a wind power system comprises a cabinet body, wherein a bottom plate is arranged at the bottom of the cabinet body, a first ventilation hole is formed in the bottom plate, side plates are fixedly connected to the periphery of the bottom plate, the side plates are fixedly connected to a base plate, air inlets are formed in the side plates, a guide rail is fixedly connected to the base plate, a screw rod parallel to the guide rail is arranged on the guide rail, two ends of the screw rod are fixedly connected to the side plates, a movable block penetrates through the guide rail, a through hole is formed in the movable block, the screw rod penetrates through the movable block through the through hole, a first driving motor is fixedly mounted on the movable block, a fan blade is fixedly connected to an output shaft of the first driving motor, and faces towards an upper bottom plate and is used for rotating; rotate on the lateral wall of movable block and be connected with first gear, the middle part of first gear is equipped with the screw thread and passes through screw-thread fit with the screw rod, fixed mounting has second driving motor on the movable block, fixedly connected with second gear on second driving motor's the output shaft, first gear passes through gear engagement transmission with the second gear.
Furthermore, be equipped with the step axle on the lateral wall of first gear, fixedly connected with sleeve on the lateral wall of movable block, the step axle alternates in telescopic hole, telescopic outer end is equipped with the buckle ring that extends to the axis, the buckle ring inlay card is in the recess between step axle and the first gear lateral wall.
Furthermore, the upper ends of the two sides of the cabinet body are provided with air holes, the top of the cabinet body is fixedly connected with a top plate, and four sides of the top plate extend to the outer side of the cabinet body to form a shielding plate.
Furthermore, a water baffle is fixedly connected to the side wall of the cabinet body, the outer side edge of the water baffle inclines downwards, and the water baffle is located above the air inlet.
Furthermore, the base plate is provided with a mounting hole for fixing the cabinet body on the ground.
The neutral point grounding resistance cabinet for the wind power system has the following beneficial effects: when the air cooling cabinet is used, the output shaft of the first driving motor rotates to drive the fan blades to rotate, so that air at a lower temperature entering from the air inlet is blown into the inner cavity of the cabinet body from the first air vent of the bottom plate, the air flow in the inner cavity of the cabinet body is increased, and heat generated in the cabinet body is dissipated; an output shaft of the second driving motor drives the first gear to rotate, the first gear is matched with the screw rod through threads, so that the first gear moves axially along the screw rod, the movable block is driven to move along the guide rail, the fan blades move to blow cooling air into the cabinet body, the fan blades blow the cooling air into the cabinet body back and forth through the forward and reverse rotation of the second driving motor, and the heat dissipation effect is improved; the top of the side wall of the cabinet body is provided with the air holes, so that heat can be quickly spread; the outer edge of the top plate forms a baffle plate, and the side wall of the cabinet body is provided with a water baffle plate, so that sundries can be reduced from entering the cabinet body and dust can be prevented from entering the cabinet body. The invention realizes the heat dissipation of the circuit elements in the cabinet body, and improves the heat dissipation effect by blowing cold air in the moving way.
Description of the drawings:
the following detailed description of embodiments of the invention is provided in conjunction with the appended drawings:
fig. 1 is a schematic structural diagram of a neutral point grounding resistor cabinet for a wind power system according to the present invention;
fig. 2 is a partial structure diagram of a portion a in fig. 1.
The reference numbers in the figures illustrate: 1-cabinet body, 11-ventilation hole, 12-top plate, 13-water baffle, 2-bottom plate, 21-first ventilation hole, 22-side plate, 221-air inlet, 3-base plate, 31-guide rail, 32-screw rod, 33-movable block, 331-sleeve, 332-snap ring, 34-first driving motor, 35-fan blade, 36-first gear, 361-step shaft, 37-second driving motor and 38-second gear.
The specific implementation mode is as follows:
it should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that all the directional indicators (such as up-down-left-right-front-back … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components in a specific posture (as shown in the figure) -motion situation, etc., and if the specific posture is changed, the directional indicators are changed accordingly, and the connection may be a direct connection or an indirect connection.
As shown in fig. 1 and 2, a neutral point grounding resistance cabinet for a wind power system comprises a cabinet body 1, the bottom of the cabinet body 1 is provided with a bottom plate 2, the bottom plate 2 is provided with a first vent hole 21, the periphery of the bottom plate 2 is fixedly connected with a side plate 22, the side plate 22 is fixedly connected on the base plate 3, the side plate 22 is provided with an air inlet 221, the base plate 3 is fixedly connected with a guide rail 31, the guide rail 31 is provided with a screw 32 arranged in parallel with the guide rail 31, two ends of the screw 32 are fixedly connected with the side plate 22, the guide rail 31 is sleeved with a movable block 33, a through hole is arranged in the movable block 33, the screw 32 passes through the movable block 33 through the through hole, a first driving motor 34 is fixedly installed on the movable block 33, fan blades 35 are fixedly connected to an output shaft of the first driving motor 34, the fan blades 35 face the upper bottom plate 2 and are used for rotating to supply air to the cavity above the bottom plate 2; rotate on the lateral wall of movable block 33 and be connected with first gear 36, the middle part of first gear 36 is equipped with the screw thread and passes through screw-thread fit with screw rod 32, fixed mounting has second driving motor 37 on the movable block 33, fixedly connected with second gear 38 on the output shaft of second driving motor 37, first gear 36 passes through gear engagement transmission with second gear 38. The second driving motor 37 is a servo motor capable of rotating in forward and reverse directions.
Specifically, a step shaft 361 is arranged on the side wall of the first gear 36, a sleeve 331 is fixedly connected to the side wall of the movable block 33, the step shaft 361 is inserted into an inner hole of the sleeve 331, a snap ring 332 extending in the axial direction is arranged at the outer end of the sleeve 331, and the snap ring 332 is snap-fitted in a groove between the step shaft 361 and the side wall of the first gear 36.
Specifically, bleeder vent 11 has been seted up to the both sides upper end of the cabinet body 1, the top fixedly connected with roof 12 of the cabinet body 1, the four sides of roof 12 extend to the outside of the cabinet body 1 and form the shielding plate.
Specifically, a water baffle 13 is fixedly connected to the side wall of the cabinet body 1, the outer side edge of the water baffle 13 is inclined downward, and the water baffle 13 is located above the air inlet 221.
Specifically, the periphery of the base plate 3 is provided with mounting holes for fixing the cabinet 1 on the ground.
By adopting the technical scheme, when the heat dissipation cabinet is used, the output shaft of the first driving motor 34 rotates to drive the fan blades 35 to rotate, so that air with lower temperature entering from the air inlet 221 is blown into the inner cavity of the cabinet body 1 from the first air vent 21 of the bottom plate 2, the air flow in the inner cavity of the cabinet body 1 is increased, and heat generated in the cabinet body 1 is dissipated; an output shaft of the second driving motor 37 drives the first gear 36 to rotate, the first gear 36 is matched with the screw rod 32 through threads, so that the first gear 36 axially moves along the screw rod 32, the movable block 33 is driven to move along the guide rail 31, the fan blades 35 move to blow cooling air into the cabinet body 1, the fan blades 35 are driven to reciprocate to blow cooling air into the cabinet body 1 through the forward and reverse rotation of the second driving motor 37, and the heat dissipation effect is improved; the top of the side wall of the cabinet body 1 is provided with the air holes 11, so that heat can be quickly spread; the outer edge of the top plate 12 forms a baffle plate, and the side wall of the cabinet body 1 is provided with a water baffle 13, so that sundries can be reduced from entering the cabinet body 1 and dust can be prevented from entering the cabinet body 1.
The foregoing shows and describes the general principles, essential features, and inventive features of this invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is to be protected by the following claims and their equivalents.
Claims (5)
1. The utility model provides a neutral point resistance to ground cabinet for wind power system which characterized in that: comprises a cabinet body (1), the bottom of the cabinet body (1) is provided with a bottom plate (2), a first vent hole (21) is formed in the bottom plate (2), a bottom plate (2) is fixedly connected with side plates (22) all around, the side plates (22) are fixedly connected onto a base plate (3), an air inlet (221) is formed in the side plates (22), a base plate (3) is fixedly connected with a guide rail (31), the guide rail (31) is provided with a screw rod (32) which is arranged in parallel with the guide rail (31), two ends of the screw rod (32) are fixedly connected onto the side plates (22), a movable block (33) is sleeved on the guide rail (31), a through hole is formed in the inner part of the movable block (33), the screw rod (32) penetrates through the movable block (33) through the through hole, a first driving motor (34) is fixedly installed on the movable block (33), and fan blades (35) are fixedly connected onto an output, the fan blades (35) face the upper bottom plate (2) and are used for rotating to supply air to the cavity above the bottom plate (2); rotate on the lateral wall of movable block (33) and be connected with first gear (36), the middle part of first gear (36) is equipped with the screw thread and passes through screw-thread fit with screw rod (32), fixed mounting has second driving motor (37) on movable block (33), fixedly connected with second gear (38) on the output shaft of second driving motor (37), gear engagement transmission is passed through with second gear (38) in first gear (36).
2. The neutral point grounding resistor cabinet for the wind power system as claimed in claim 1, wherein a step shaft (361) is disposed on a side wall of the first gear (36), a sleeve (331) is fixedly connected to a side wall of the movable block (33), the step shaft (361) is inserted into an inner hole of the sleeve (331), an outer end of the sleeve (331) is provided with a snap ring (332) extending in an axial direction, and the snap ring (332) is snap-fitted into a groove between the step shaft (361) and the side wall of the first gear (36).
3. The neutral point grounding resistor cabinet for the wind power system as claimed in claim 1, wherein: the improved wardrobe is characterized in that air holes (11) are formed in the upper ends of the two sides of the wardrobe body (1), a top plate (12) is fixedly connected to the top of the wardrobe body (1), and four sides of the top plate (12) extend to the outer side of the wardrobe body (1) to form a shielding plate.
4. The neutral point grounding resistor cabinet for the wind power system as claimed in claim 1, wherein: fixedly connected with breakwater (13) on the lateral wall of cabinet body (1), just the outside border downward sloping of breakwater (13), breakwater (13) are located the top of air intake (221).
5. The neutral point grounding resistor cabinet for the wind power system as claimed in claim 1, wherein: the periphery of the base plate (3) is provided with mounting holes for fixing the cabinet body (1) on the ground.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010194454.2A CN111313253A (en) | 2020-03-19 | 2020-03-19 | Neutral point grounding resistance cabinet for wind power system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010194454.2A CN111313253A (en) | 2020-03-19 | 2020-03-19 | Neutral point grounding resistance cabinet for wind power system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111313253A true CN111313253A (en) | 2020-06-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010194454.2A Pending CN111313253A (en) | 2020-03-19 | 2020-03-19 | Neutral point grounding resistance cabinet for wind power system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111313253A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113851984A (en) * | 2021-10-29 | 2021-12-28 | 广东电网有限责任公司 | Switch board heat sink and switch board |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201319285Y (en) * | 2008-12-12 | 2009-09-30 | 上海幸久电气成套设备有限公司 | Neutral point earth resistance cabinet |
| CN208258286U (en) * | 2018-05-29 | 2018-12-18 | 合肥龙多电子科技有限公司 | A kind of novel household appliance controller |
| CN209105523U (en) * | 2018-08-29 | 2019-07-12 | 中国十七冶集团有限公司 | A kind of convenient and fast security information equipment of operation |
| CN110461126A (en) * | 2019-07-10 | 2019-11-15 | 安徽迅科智能技术有限公司 | A kind of light current security protection cabinet of perfect heat-dissipating |
| CN209994755U (en) * | 2019-01-10 | 2020-01-24 | 广州永昱节能科技有限公司 | And dress formula terminal DDC control box |
-
2020
- 2020-03-19 CN CN202010194454.2A patent/CN111313253A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201319285Y (en) * | 2008-12-12 | 2009-09-30 | 上海幸久电气成套设备有限公司 | Neutral point earth resistance cabinet |
| CN208258286U (en) * | 2018-05-29 | 2018-12-18 | 合肥龙多电子科技有限公司 | A kind of novel household appliance controller |
| CN209105523U (en) * | 2018-08-29 | 2019-07-12 | 中国十七冶集团有限公司 | A kind of convenient and fast security information equipment of operation |
| CN209994755U (en) * | 2019-01-10 | 2020-01-24 | 广州永昱节能科技有限公司 | And dress formula terminal DDC control box |
| CN110461126A (en) * | 2019-07-10 | 2019-11-15 | 安徽迅科智能技术有限公司 | A kind of light current security protection cabinet of perfect heat-dissipating |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113851984A (en) * | 2021-10-29 | 2021-12-28 | 广东电网有限责任公司 | Switch board heat sink and switch board |
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| RJ01 | Rejection of invention patent application after publication | ||
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Application publication date: 20200619 |