CN104215824A - Distribution transformer neutral-conductor ground current detection warning device - Google Patents
Distribution transformer neutral-conductor ground current detection warning device Download PDFInfo
- Publication number
- CN104215824A CN104215824A CN201410399122.2A CN201410399122A CN104215824A CN 104215824 A CN104215824 A CN 104215824A CN 201410399122 A CN201410399122 A CN 201410399122A CN 104215824 A CN104215824 A CN 104215824A
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- China
- Prior art keywords
- bus
- neutral
- conductor ground
- distribution transformer
- gprs wireless
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- 239000004020 conductor Substances 0.000 title abstract 6
- 238000001514 detection method Methods 0.000 title abstract 3
- 230000001264 neutralization Effects 0.000 claims description 18
- 230000005540 biological transmission Effects 0.000 abstract 4
- 230000005611 electricity Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000001012 protector Effects 0.000 description 2
- 238000010616 electrical installation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
Abstract
The invention provides a distribution transformer neutral-conductor ground current detection warning device which comprises a distribution transformer, a zero-sequence current transformer, an RS-485 bus collector module and a GPRS (general packet radio service) wireless data transmission module, wherein the zero-sequence current transformer is connected with the a neutral-conductor ground terminal of the low-voltage side of the distribution transformer, the RS-485 collector module is connected with the output end of the secondary side of the zero-sequence current transformer, and the GPRS wireless data transmission module is connected with the output end of the RS-485 bus collector module through an RS-485 bus. When increasing, neutral-conductor ground current on the low-voltage-side of the distribution transformer is detected through the zero-sequence current transformer and collected through the RS-485 bus collector module, collected signal information is transmitted to the input end of the GPRS wireless data transmission module through the RS-485 bus, the output end of the GPRS wireless data transmission module uploads the signal information to a computer of a power supply station through a GPRS wireless communication network, detection warning is performed on the neutral-conductor ground current of the distribution transformer, and failure of the neutral-conductor ground current can be repaired timely.
Description
Technical field
The present invention relates to power transformer detecting field, relate in particular to substation transformer neutral line current detecting prior-warning device over the ground.
Background technology
At present; the transformer platform area of using in rural power distribution system; the total protector of electric leakage is installed conventionally; as protection against indirect contact; when insulation of electrical installation punctures, cause metal shell when electric leakage, charged electrical equipment metal shell forms closed-loop path by ground wire, and total protector that leaks electricity detects after electric leakage signal; drive trip circuit to carry out 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 can not play the effect preventing trouble before it happens, cause circuit Frequent trip, directly have influence on the electricity consumption reliability of electricity consumer.How preventing the electricity consumption impact that this phenomenon causes, accomplish to prevent trouble before it happens, Accident Symptom is eliminated in bud, is the problem that technician needs solution badly.
Summary of the invention
The object of the invention is for the deficiencies in the prior art, thereby substation transformer neutral line current detecting prior-warning device is over the ground provided.
To achieve these goals, the technical solution adopted in the present invention 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 being connected with the neutral earthing end of this substation transformer low-pressure side, the RS-485 bus collector module being connected with the secondary side output terminal of described zero sequence current mutual inductor, passes through the GPRS wireless communication data transport module that RS-485 bus is connected with the output terminal of described RS-485 bus collector module.
The relative prior art of the present invention has substantive distinguishing features and progress, specifically, when the neutral line of substation transformer low-pressure side increases vagabond current, by zero sequence current mutual inductor, detected, the setting value that vagabond current is exceeded to testing circuit at the neutral line≤during 500mA, by RS-485 bus collector module, gathered, and the signal message collecting 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.Thereby accomplished the early warning of substation transformer neutral line earth leakage current.
Accompanying drawing explanation
Fig. 1 is the substation transformer neutral line structural representation of current detecting prior-warning device over the ground in the embodiment of the present invention.
Embodiment
Below by embodiment, technical scheme of the present invention 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 being connected with the neutral earthing end of these substation transformer 101 low-pressure sides, the RS-485 bus collector module 104 being connected with the secondary side output terminal of described zero sequence current mutual inductor 103, passes through the GPRS wireless communication data transport module 105 that RS-485 bus is connected with the output terminal of described RS-485 bus collector module 104.When in use, when the neutral line of substation transformer low-pressure side increases vagabond current, by zero sequence current mutual inductor, detected, the setting value that vagabond current is exceeded to testing circuit at the neutral line≤during 500mA, by RS-485 bus collector module, gathered, and the signal message collecting 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.Thereby 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 technical scheme of the present invention is not intended to limit; Although the present invention is had been described in detail with reference to preferred embodiment, those of ordinary skill in the field are to be understood that: still can modify or part technical characterictic is equal to replacement the specific embodiment of the present invention; And not departing from the spirit of technical solution of the present invention, it all should be encompassed in the middle of the technical scheme scope that the present invention asks for 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 being connected with the neutral earthing end of this substation transformer low-pressure side, the RS-485 bus collector module being connected with the secondary side output terminal of described zero sequence current mutual inductor, the GPRS wireless communication data transport module being 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 |
|---|---|---|---|
| CN201410399122.2A CN104215824A (en) | 2014-08-14 | 2014-08-14 | Distribution transformer neutral-conductor ground current detection warning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410399122.2A CN104215824A (en) | 2014-08-14 | 2014-08-14 | Distribution transformer neutral-conductor ground current detection warning device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104215824A true CN104215824A (en) | 2014-12-17 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410399122.2A Pending CN104215824A (en) | 2014-08-14 | 2014-08-14 | Distribution transformer neutral-conductor ground current detection warning device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104215824A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201726200U (en) * | 2010-06-19 | 2011-01-26 | 陈家斌 | Low-voltage phase line grounding remote alarm for 10-20kV transformer |
| CN202421404U (en) * | 2012-01-17 | 2012-09-05 | 陈亮 | On-line monitoring system for transformer |
| US20120257315A1 (en) * | 2011-04-11 | 2012-10-11 | Aeg Power Solutions B.V. | Arrangement for ground-fault detection in an ac circuit and power supply arrangement with ground-fault detection |
| CN102931733A (en) * | 2012-11-19 | 2013-02-13 | 上海市电力公司 | Residual current remote data collection and operation monitoring system |
| CN203561715U (en) * | 2013-10-12 | 2014-04-23 | 河南开启电力实业有限公司 | Power distribution network electric leakage signal on-line detection device |
| CN204086378U (en) * | 2014-08-14 | 2015-01-07 | 河南开启电力实业有限公司 | The substation transformer neutral line is current detecting prior-warning device over the ground |
-
2014
- 2014-08-14 CN CN201410399122.2A patent/CN104215824A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201726200U (en) * | 2010-06-19 | 2011-01-26 | 陈家斌 | Low-voltage phase line grounding remote alarm for 10-20kV transformer |
| US20120257315A1 (en) * | 2011-04-11 | 2012-10-11 | Aeg Power Solutions B.V. | Arrangement for ground-fault detection in an ac circuit and power supply arrangement with ground-fault detection |
| CN202421404U (en) * | 2012-01-17 | 2012-09-05 | 陈亮 | On-line monitoring system for transformer |
| CN102931733A (en) * | 2012-11-19 | 2013-02-13 | 上海市电力公司 | Residual current remote data collection and operation monitoring system |
| CN203561715U (en) * | 2013-10-12 | 2014-04-23 | 河南开启电力实业有限公司 | Power distribution network electric leakage signal on-line detection device |
| CN204086378U (en) * | 2014-08-14 | 2015-01-07 | 河南开启电力实业有限公司 | The substation transformer neutral line is current detecting prior-warning device over the ground |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20141217 |
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| RJ01 | Rejection of invention patent application after publication |