CN206564423U - 66kV neutral point of electric network earthing resistance cabinets - Google Patents
66kV neutral point of electric network earthing resistance cabinets Download PDFInfo
- Publication number
- CN206564423U CN206564423U CN201720302281.5U CN201720302281U CN206564423U CN 206564423 U CN206564423 U CN 206564423U CN 201720302281 U CN201720302281 U CN 201720302281U CN 206564423 U CN206564423 U CN 206564423U
- Authority
- CN
- China
- Prior art keywords
- cabinet
- resistor
- neutral point
- electric network
- insulator
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Details Of Resistors (AREA)
Abstract
The utility model is related to a kind of 66kV neutral point of electric network earthing resistance cabinet, it is made up of cabinet and the resistor group being arranged in cabinet, insulator, current transformer, using the wire leading method of upper entering and lower leaving, resistor box small volume, floor space is few, in the case of grounding resistance cabinet is less, best radiating effect can be reached, forced air cooling system can not be increased, by natural air cooled, to meet the radiating in earthing resistance cabinet.Resistor group is set using walled structure, resistive element is small, and can high temperature resistant, big voltage and high current can be born, can guarantee that 66kV network systems it is efficient, stably, high-quality operation.
Description
Technical field
The utility model is related to a kind of power network neutral point earthing or grounding means, particularly a kind of 66kV neutral point of electric network ground connection electricity
Hinder cabinet.
Background technology
At present, the electric network composition of China via overhead transmission line be main fast transition to based on cable run, and with
The continuous expansion of present city size, the scale of cable run is also constantly increasing, the capacitance current of urban electricity system with
Be also continuously increased.The change of electric network composition causes the change of some areas neutral grounding mode, in view of neutral point is through electricity
The advantage of earthing mode is hindered, it is widely applied in urban power distribution network.
Existing power network neutral point earthing or grounding means is mostly the corollary equipment of 10kV or 220kV power networks, and it is not applied to
In the use of 66kV power networks.
Utility model content
The purpose of this utility model is to provide a kind of 66kV neutral point of electric network grounding resistances used in 66kV power networks
Cabinet.
What the purpose of this utility model was realized in：A kind of 66kV neutral point of electric network earthing resistance cabinet, by cabinet and sets
The resistor group in cabinet, insulator, current transformer is put to constitute, it is characterised in that：
（1）Described resistor group is made up of multiple resistors connected with copper bar, and the resistive element of resistor uses grid
Format structure, multiple resistive elements are placed on resistor framework, and insulation spacer is provided between each resistive element；
（2）Described insulator is arranged between resistor group each adjacent resistor and resistor group and cabinet bottom
Between face and cabinet body sidewall；
（3）Wall bushing is provided with the top of cabinet；
（4）It is connected between wall bushing, resistor group and current transformer by copper bar.
Top, bottom and the side of described cabinet are provided with air vent.
Between insulator and cabinet, resistor, elastomeric pad is provided with.
The utility model uses the wire leading method of upper entering and lower leaving, and wall bushing is placed in the top of cabinet, and resistor group is put
Resistor is fixed in the bottom surface of cabinet, and by vertical insulator, also fixed between resistor and cabinet side by horizontal insulator,
It is connected between wall bushing, resistor and current transformer by copper bar.
The beneficial effects of the utility model are：Resistor box small volume, floor space is few, in the less feelings of grounding resistance cabinet
Under condition, best radiating effect can be reached, forced air cooling system can not be increased, by natural air cooled, to meet earthing resistance cabinet
Interior radiating.Resistor group is set using walled structure, resistive element is small, and energy high temperature resistant, big voltage and big electricity can be born
Stream, can guarantee that 66kV network systems it is efficient, stably, high-quality operation.
Brief description of the drawings
Fig. 1 is the utility model structural representation；
Fig. 2 is the utility model circuit structure block diagram.
Embodiment
The utility model is further described below in conjunction with the accompanying drawings：
As shown in Figure 1, 2, the utility model is mainly by wall bushing 1, resistor group 2, insulator 3, current transformer
（CT）4 and cabinet 5 constitute.
The utility model uses the wire leading method of upper entering and lower leaving, and wall bushing is placed in the top of grounding resistance cabinet, institute
The bottom surface that resistor group is placed in grounding resistance cabinet is stated, and is fixed resistor by vertical insulator, resistor and cabinet side
Between fixed by horizontal insulator.It is connected between wall bushing, resistor and current transformer by copper bar 6.
Equipment installation and removal can be carried out in order to both meet, are met again after radiating in case of a fault, the present embodiment is set
Count cabinet size and be no more than 4.7 (m) * 2.7 (m) * 2.7 (m).Ventilating path is provided with the bottom and top of cabinet, cabinet is full
It is as much as possible to open air holes in side in the case of foot open air protection IP33 requirements, to ensure its radiating effect.
The resistive element of resistor uses walled structure, and multiple resistive elements are placed on grounding resistor framework, each
There is insulation spacer between resistive element.Equally, fixed between each grounding resistance using vertical insulator and horizontal insulator, group
Into an entirety, connected each other by copper bar.The resistive element thickness of the present embodiment grounding resistance is 4mm, and resistor makes
Made of stainless steel 304 material, it is more superior on overall performance.
Insulator is fixed and isolation adjacent resistor and the important devices of resistor and cabinet.What the present embodiment was used
Ceramic insulator, and for the frangible shortcoming of ceramic insulator, corresponding pad protection is with the addition of in design.Reduction ceramics
Insulator probability of damage in transit.
Claims (3)
1. a kind of 66kV neutral point of electric network earthing resistance cabinet, by cabinet and the resistor group being arranged in cabinet, insulator, electric current
Transformer is constituted, it is characterised in that：
（1）Described resistor group is made up of multiple resistors connected with copper bar, and the resistive element of resistor uses grid type
Structure, multiple resistive elements are placed on resistor framework, and insulation spacer is provided between each resistive element；
（2）Described insulator be arranged between resistor group each adjacent resistor and resistor group and cabinet floor and
Between cabinet body sidewall；
（3）Wall bushing is provided with the top of cabinet；
（4）It is connected between wall bushing, resistor group and current transformer by copper bar.
2. 66kV neutral point of electric network earthing resistance cabinet according to claim 1, it is characterised in that the top of described cabinet,
Bottom and side are provided with air vent.
3. 66kV neutral point of electric network earthing resistance cabinet according to claim 1, it is characterised in that in insulator and cabinet, electricity
Hinder between device, be provided with elastomeric pad.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720302281.5U CN206564423U (en) | 2017-03-27 | 2017-03-27 | 66kV neutral point of electric network earthing resistance cabinets |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720302281.5U CN206564423U (en) | 2017-03-27 | 2017-03-27 | 66kV neutral point of electric network earthing resistance cabinets |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206564423U true CN206564423U (en) | 2017-10-17 |
Family
ID=60032646
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720302281.5U Active CN206564423U (en) | 2017-03-27 | 2017-03-27 | 66kV neutral point of electric network earthing resistance cabinets |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206564423U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111327029A (en) * | 2020-04-23 | 2020-06-23 | 安徽广祺智能电器股份有限公司 | Substation dynamic small resistor in-situ protection system and method thereof |
-
2017
- 2017-03-27 CN CN201720302281.5U patent/CN206564423U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111327029A (en) * | 2020-04-23 | 2020-06-23 | 安徽广祺智能电器股份有限公司 | Substation dynamic small resistor in-situ protection system and method thereof |
| CN111327029B (en) * | 2020-04-23 | 2022-05-27 | 安徽广祺智能电器股份有限公司 | Substation dynamic small resistor in-situ protection system and method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206564423U (en) | 66kV neutral point of electric network earthing resistance cabinets | |
| CN202584884U (en) | Insulation shielding type tubular bus | |
| CN202721351U (en) | A double-layer outgoing line structure of a 220kV HGIS power distribution unit | |
| CN102427203A (en) | Method for arranging air insulated switchgear (AIS) power distribution unit of smart substation | |
| CN204088809U (en) | The special-shaped bus of external insulation shielding | |
| CN204067880U (en) | A kind of power distribution equipment arrangement back-to-back | |
| CN203260897U (en) | Outdoor opening type combined electrical appliance special for high altitude areas | |
| CN205984672U (en) | Be applicable to high -tension apparatus high current switch contact | |
| CN201490609U (en) | Grounding car with adjustable height of center-set switching device | |
| CN204809737U (en) | Exchange high -pressure metal -enclosed looped netowrk switchgear | |
| CN204497636U (en) | A kind of built on stilts inlet wire China used for wind power generation formula case becomes | |
| CN203573821U (en) | High-voltage parallel capacitor | |
| CN203456779U (en) | A metering handcart suitable for a switch cabinet | |
| CN204011246U (en) | High-pressure vacuum breaker | |
| CN206331962U (en) | High-pressure vacuum breaker | |
| CN201975704U (en) | Lower earthing switch room of floor type alternating current high-voltage intelligent switch cabinet | |
| CN206461325U (en) | A kind of energy-saving tubulose bus duct of copper aluminium interface alloy composite conductor | |
| CN204144759U (en) | ATS modular transformer substation | |
| CN204230648U (en) | Based on the outdoor power distribution unit of Novel tank-type circuit breaker | |
| CN104008916A (en) | Shunting device for handling heating of gate of horizontal-rotation type high-voltage isolating switch in electrifying mode | |
| CN204012614U (en) | A kind of large capacity drop-type arrester | |
| CN203932693U (en) | Rail traction substation 27.5kV main electrical scheme structure | |
| CN201732986U (en) | High-voltage ring network switch cabinet | |
| CN203135293U (en) | Switch cabinet provided with flame retardant plates | |
| CN202042806U (en) | Upper isolation room of floor box-type AC high-voltage intelligent switch cabinet |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |