CN204086378U - The substation transformer neutral line is current detecting prior-warning device over the ground - Google Patents
The substation transformer neutral line is current detecting prior-warning device over the ground Download PDFInfo
- Publication number
- CN204086378U CN204086378U CN201420458425.2U CN201420458425U CN204086378U CN 204086378 U CN204086378 U CN 204086378U CN 201420458425 U CN201420458425 U CN 201420458425U CN 204086378 U CN204086378 U CN 204086378U
- Authority
- CN
- China
- Prior art keywords
- substation transformer
- ground
- bus
- neutral line
- wireless communication
- 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.)
- Expired - Fee Related
Links
Landscapes
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Abstract
The utility model provides substation transformer neutral line current detecting prior-warning device over the ground, and it comprises substation transformer, the zero sequence current mutual inductor be connected with the neutral earthing end of this substation transformer low-pressure side, the RS-485 bus collector module be connected with the secondary side output terminal of described zero sequence current mutual inductor, the GPRS wireless communication data transport module that is connected with the output terminal of described RS-485 bus collector module by RS-485 bus.The utility model is when the neutral line of substation transformer low-pressure side increases vagabond current, undertaken detecting by zero sequence current mutual inductor and gathered by RS-485 bus collector module, the signal message collected is passed to the input end of GPRS wireless communication data transport module by RS-485 bus, the output terminal of GPRS wireless communication data transport module uploads to power supply station's computing machine by GPRS wireless communication networks, be convenient to the current detecting early warning over the ground of the substation transformer neutral line, timely centering line over the ground failure of the current is rebuild.
Description
Technical field
The utility model relates to power transformer detecting field, particularly relates to substation transformer neutral line current detecting prior-warning device over the ground.
Background technology
At present; in the transformer platform area that rural power distribution system uses; usual installation is leaked electricity total protector; as protection against indirect contact; namely when insulation of electrical installation puncture cause metal shell to leak electricity time, charged electrical equipment metal shell forms closed-loop path by ground wire, after total protector that leaks electricity detects electric leakage signal; drive trip circuit to perform tripping operation and disconnect low-voltage circuit general supply, play protection against indirect contact effect.But this protected mode can affect the reliability of electricity consumption, and the effect prevented trouble before it happens can not be played, cause circuit Frequent trip, directly have influence on the electricity consumption reliability of electricity consumer.The electricity consumption impact how preventing this phenomenon from causing, accomplish to prevent trouble before it happens, Accident Symptom is eliminated in bud, is the problem that technician needs solution badly.
Utility model content
The purpose of this utility model is for the deficiencies in the prior art, thus provides substation transformer neutral line current detecting prior-warning device over the ground.
To achieve these goals, the technical scheme that the utility model adopts is: the substation transformer neutral line is current detecting prior-warning device over the ground, and it comprises substation transformer, the zero sequence current mutual inductor be connected with the neutral earthing end of this substation transformer low-pressure side, the RS-485 bus collector module be connected with the secondary side output terminal of described zero sequence current mutual inductor, the GPRS wireless communication data transport module that is connected with the output terminal of described RS-485 bus collector module by RS-485 bus.
The utility model hinge structure has substantive distinguishing features and progress, specifically, when the neutral line of substation transformer low-pressure side increases vagabond current, detected by zero sequence current mutual inductor, the neutral line to vagabond current exceed the setting value of testing circuit namely≤500mA time, gathered by RS-485 bus collector module, and the signal message collected is passed to the input end of GPRS wireless communication data transport module by RS-485 bus, the output terminal of GPRS wireless communication data transport module uploads to power supply station's computing machine by GPRS wireless communication networks, be convenient to the current detecting early warning over the ground of the substation transformer neutral line, timely centering line over the ground failure of the current is rebuild.Thus accomplished the early warning of substation transformer neutral line earth leakage current.
Accompanying drawing explanation
Fig. 1 is the structural representation of substation transformer neutral line current detecting prior-warning device over the ground in the utility model embodiment.
Embodiment
Below by embodiment, the technical solution of the utility model is described in further detail.
As shown in Figure 1, the substation transformer neutral line is current detecting prior-warning device over the ground, it is characterized in that: it comprises substation transformer 101, the zero sequence current mutual inductor 103 be connected with the neutral earthing end of this substation transformer 101 low-pressure side, the RS-485 bus collector module 104 be connected with the secondary side output terminal of described zero sequence current mutual inductor 103, the GPRS wireless communication data transport module 105 that is connected with the output terminal of described RS-485 bus collector module 104 by RS-485 bus.When in use, when the neutral line of substation transformer low-pressure side increases vagabond current, detected by zero sequence current mutual inductor, the neutral line to vagabond current exceed the setting value of testing circuit namely≤500mA time, gathered by RS-485 bus collector module, and the signal message collected is passed to the input end of GPRS wireless communication data transport module by RS-485 bus, the output terminal of GPRS wireless communication data transport module uploads to power supply station's computing machine by GPRS wireless communication networks, be convenient to the current detecting early warning over the ground of the substation transformer neutral line, timely centering line over the ground failure of the current is rebuild.Thus accomplished the early warning of substation transformer neutral line earth leakage current.
Finally should be noted that: above embodiment is only in order to illustrate that the technical solution of the utility model is not intended to limit; Although be described in detail the utility model with reference to preferred embodiment, those of ordinary skill in the field have been to be understood that: still can modify to embodiment of the present utility model or carry out equivalent replacement to portion of techniques feature; And not departing from the spirit of technical solutions of the utility model, it all should be encompassed in the middle of the technical scheme scope of the utility model request protection.
Claims (1)
1. substation transformer neutral line current detecting prior-warning device over the ground, is characterized in that: it comprises substation transformer, the zero sequence current mutual inductor be connected with the neutral earthing end of this substation transformer low-pressure side, the RS-485 bus collector module be connected with the secondary side output terminal of described zero sequence current mutual inductor, the GPRS wireless communication data transport module that is connected with the output terminal of described RS-485 bus collector module by RS-485 bus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420458425.2U CN204086378U (en) | 2014-08-14 | 2014-08-14 | The substation transformer neutral line is current detecting prior-warning device over the ground |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420458425.2U CN204086378U (en) | 2014-08-14 | 2014-08-14 | The substation transformer neutral line is current detecting prior-warning device over the ground |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204086378U true CN204086378U (en) | 2015-01-07 |
Family
ID=52179079
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420458425.2U Expired - Fee Related CN204086378U (en) | 2014-08-14 | 2014-08-14 | The substation transformer neutral line is current detecting prior-warning device over the ground |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204086378U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104215824A (en) * | 2014-08-14 | 2014-12-17 | 河南开启电力实业有限公司 | Distribution transformer neutral-conductor ground current detection warning device |
-
2014
- 2014-08-14 CN CN201420458425.2U patent/CN204086378U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104215824A (en) * | 2014-08-14 | 2014-12-17 | 河南开启电力实业有限公司 | Distribution transformer neutral-conductor ground current detection warning device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102937687B (en) | Method for distinguishing disconnection fault and grounding fault during grounding of neutral point through small resistor | |
| CN103516052A (en) | Power distribution equipment on-line monitoring early-warning terminal | |
| CN204721106U (en) | Based on the power transmission line overhead ground wire electromagnetism energy taking device of super capacitor | |
| CN102749553A (en) | Automatic positioning device for grounding failure of power transmission line | |
| CN204361791U (en) | A kind of circuit structure of intelligent low-pressure distribution terminal | |
| CN204086378U (en) | The substation transformer neutral line is current detecting prior-warning device over the ground | |
| CN204649899U (en) | Small current grounding failure wire selection system in a kind of dispatching of power netwoks | |
| CN205027855U (en) | Passive insulator flashover fault indicator | |
| CN204179731U (en) | Support the distribution line on-line monitoring acquisition terminal of circuit automatic electricity getting | |
| CN203433077U (en) | Fault indicator of distribution network | |
| CN202041612U (en) | Automatic locating device for earth faults of electricity transmission lines | |
| CN203562840U (en) | Power distribution equipment on-line monitoring early-warning terminal | |
| CN204215865U (en) | A kind of 20kV dry-type earth transformer | |
| CN207183176U (en) | A kind of breaker with transformer disconnection defencive function | |
| CN202133471U (en) | Infrared temperature monitoring device for switchgear | |
| CN208078643U (en) | A kind of device with master-slave back-up lightning protection device | |
| CN104215824A (en) | Distribution transformer neutral-conductor ground current detection warning device | |
| CN201838986U (en) | Leakage protector | |
| CN204858730U (en) | 10KV switch board secondary circuit voltage seamless handover device | |
| CN202949213U (en) | Auxiliary protection device for remote tripping judgment | |
| CN103472359A (en) | Distribution system fault indicator | |
| CN204992546U (en) | Protection device for preventing storage battery from over-discharging | |
| CN204794055U (en) | Zero disconnected open phase protection of low pressure power supply system | |
| CN204495953U (en) | Distribution line failure wireless location system | |
| CN203673016U (en) | Distribution network fault area positioning system |
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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150107 Termination date: 20160814 |