CN204190360U - A kind of distribution transformer low pressure overload intelligent protection device - Google Patents
A kind of distribution transformer low pressure overload intelligent protection device Download PDFInfo
- Publication number
- CN204190360U CN204190360U CN201420597710.2U CN201420597710U CN204190360U CN 204190360 U CN204190360 U CN 204190360U CN 201420597710 U CN201420597710 U CN 201420597710U CN 204190360 U CN204190360 U CN 204190360U
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- load switch
- distribution transformer
- fuse
- load
- protection device
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- 230000000694 effects Effects 0.000 abstract description 2
- 230000005611 electricity Effects 0.000 abstract description 2
- 206010027374 Mental impairment Diseases 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
Abstract
The utility model discloses a kind of distribution transformer low pressure overload intelligent protection device, comprise sense terminals, controller, on-load switch and fuse, described sense terminals is Hall element, the input of the output connection control device of Hall element; On-load switch and fuse are connected between distribution transformer and load successively; Described controller comprises single-chip microcomputer and signal processing circuit.The utility model transships intelligent protection device by the cooperatively interact distribution transformer low pressure that forms of on-load switch and fuse; when there is short trouble in low-pressure side; fault point is excised by fuse blows; when low-pressure side is transshipped; on-load switch is by differentiating that the current value collected disconnects on-load switch automatically; cut-out load; after time delay after a while; close this on-load switch; restore electricity; value before load needs certain hour to recover on-load switch disconnection, even if on-load switch tripping, fuse still plays the effect of backup protection.
Description
Technical field
The utility model relates to a kind of overload protection arrangement, particularly relates to a kind of distribution transformer low pressure overload intelligent protection device.
Background technology
Existing distribution transformer is the design cost reducing transformer unit, and 10kV distribution transformer low-pressure side does not install circuit breaker separately usually, when low-voltage side outlet short trouble, is fused failure removal, lose whole load by fuse (low pressure insurance); But when only using fuse; if there is low-pressure side overload; then distribution transformer heating is very serious; thus jeopardize the insulating protective layer of distribution transformer; even make distribution transformer oil spout, blast; and current power load peak period, due to and bonus adopt fuse that Distribution Transformer Burning phenomenon is often occurred.And circuit breaker cost is higher, so do not meet the thinking reduced costs.
Utility model content
The purpose of this utility model is to provide a kind of distribution transformer low pressure overload intelligent protection device, and low-pressure side short circuit automatic disengagement failure point when inapplicable circuit breaker can excise automatic recovery of power supply after a period of time during low-pressure side overload automatically.
The utility model adopts following technical proposals:
A kind of distribution transformer low pressure overload intelligent protection device, comprise sense terminals, controller, on-load switch and fuse, described sense terminals is the Hall element for detecting distribution network voltage size, the input of the output connection control device of Hall element; On-load switch and fuse are connected between distribution transformer and load successively; Described controller comprises single-chip microcomputer and signal processing circuit; Described Hall element is Hall switch sensor, and the output of Hall switch sensor connects the input of single-chip microcomputer, and the output of single-chip microcomputer passes through the input of signal processing circuit connected load switch.
Described signal processing circuit is D/A converting circuit.
Also comprise radio signal senders, for transmitting a signal to remote server.
The utility model transships intelligent protection device by the cooperatively interact distribution transformer low pressure that forms of on-load switch and fuse; when there is short trouble in low-pressure side; fault point is excised by fuse blows; when low-pressure side is transshipped; on-load switch is by differentiating that the current value collected disconnects on-load switch automatically; cut-out load; after time delay after a while; close this on-load switch; restore electricity; value before load needs certain hour to recover on-load switch disconnection, even if on-load switch tripping, fuse still plays the effect of backup protection.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Embodiment
As shown in Figure 1, a kind of distribution transformer low pressure overload intelligent protection device, comprise sense terminals, controller, on-load switch and fuse, described sense terminals is the Hall element for detecting distribution network voltage size, and the output of Hall element is once connected with load with fuse by on-load switch; Described controller comprises single-chip microcomputer and signal processing circuit; Described Hall element is Hall switch sensor, and the output of Hall switch sensor connects the input of single-chip microcomputer, and the output of single-chip microcomputer passes through the input of signal processing circuit connected load switch.
During utility model works by distribution transformer low-pressure side CT place gather three-phase current through Hall switch sensor changing voltage be digital signal, and directly carry digital signal to single-chip microcomputer input, the magnitude of voltage of single-chip microcomputer to input compares, if exceed set point, show that power distribution network low-pressure side is transshipped, single-chip microcomputer then sends control signal to on-load switch control overhead switch, control signal is converted to through signal processing circuit and analog to digital conversion circuit can after the novel analog signal of cut-offfing of control overhead switch, on-load switch disconnects m second, on-load switch closes automatically subsequently, so just solve the situation of overload in time, and prevent the overheated potential safety hazard caused.
When the voltage signal that Hall switch sensor exports equals 0, show distribution transformer low-voltage side outlet load short circuits fault, now fuse fuses automatically, disconnecting consumers circuit, ensures the safety of power supply.
While above situation occurs; namely when fuse blows or switch disconnect; single-chip microcomputer transmits a signal to wireless signal transmitter; by wireless network; fault or overload messages by being sent to monitor terminal; i.e. remote server, monitoring operator on duty notifies that Customer Service Center notifies user's control overhead, and then protects the safe operation of distribution transformer and improve power supply reliability.
Claims (3)
1. a distribution transformer low pressure overload intelligent protection device, it is characterized in that: comprise sense terminals, controller, on-load switch and fuse, described sense terminals is the Hall element for detecting distribution network voltage size, the input of the output connection control device of Hall element; On-load switch and fuse are connected between distribution transformer and load successively; Described controller comprises single-chip microcomputer and signal processing circuit; Described Hall element is Hall switch sensor, and the output of Hall switch sensor connects the input of single-chip microcomputer, and the output of single-chip microcomputer passes through the input of signal processing circuit connected load switch.
2. distribution transformer low pressure overload intelligent protection device according to claim 1, is characterized in that: described signal processing circuit is D/A converting circuit.
3. distribution transformer low pressure overload intelligent protection device according to claim 2, is characterized in that: also comprise radio signal senders, for transmitting a signal to remote server.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420597710.2U CN204190360U (en) | 2014-10-16 | 2014-10-16 | A kind of distribution transformer low pressure overload intelligent protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420597710.2U CN204190360U (en) | 2014-10-16 | 2014-10-16 | A kind of distribution transformer low pressure overload intelligent protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204190360U true CN204190360U (en) | 2015-03-04 |
Family
ID=52622331
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420597710.2U Expired - Fee Related CN204190360U (en) | 2014-10-16 | 2014-10-16 | A kind of distribution transformer low pressure overload intelligent protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204190360U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106921160A (en) * | 2017-04-06 | 2017-07-04 | 深圳市深泰明科技有限公司 | A kind of loop network control cabinet, distribution network control system, distribution network control method |
| CN110460017A (en) * | 2019-09-10 | 2019-11-15 | 国网山东省电力公司临沂供电公司 | A kind of distribution transformer low pressure overload intelligent protection device |
| CN114094593A (en) * | 2021-11-22 | 2022-02-25 | 广东电网有限责任公司广州供电局 | Self-adaptive load control method and system based on real-time monitoring of working condition of transformer |
-
2014
- 2014-10-16 CN CN201420597710.2U patent/CN204190360U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106921160A (en) * | 2017-04-06 | 2017-07-04 | 深圳市深泰明科技有限公司 | A kind of loop network control cabinet, distribution network control system, distribution network control method |
| CN106921160B (en) * | 2017-04-06 | 2023-11-07 | 深圳市深泰明科技有限公司 | Ring network control cabinet, power distribution network control system and power distribution network control method |
| CN110460017A (en) * | 2019-09-10 | 2019-11-15 | 国网山东省电力公司临沂供电公司 | A kind of distribution transformer low pressure overload intelligent protection device |
| CN110460017B (en) * | 2019-09-10 | 2021-07-27 | 国网山东省电力公司临沂供电公司 | Intelligent low-voltage overload protection device for distribution transformer |
| CN114094593A (en) * | 2021-11-22 | 2022-02-25 | 广东电网有限责任公司广州供电局 | Self-adaptive load control method and system based on real-time monitoring of working condition of transformer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150304 Termination date: 20151016 |
|
| EXPY | Termination of patent right or utility model |