CN203732604U - Fuse current monitoring device - Google Patents
Fuse current monitoring device Download PDFInfo
- Publication number
- CN203732604U CN203732604U CN201320824411.3U CN201320824411U CN203732604U CN 203732604 U CN203732604 U CN 203732604U CN 201320824411 U CN201320824411 U CN 201320824411U CN 203732604 U CN203732604 U CN 203732604U
- Authority
- CN
- China
- Prior art keywords
- current
- fuse
- phase
- monitoring device
- power waveform
- 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
- 238000012806 monitoring device Methods 0.000 title claims abstract description 15
- 230000005611 electricity Effects 0.000 claims description 7
- 230000008859 change Effects 0.000 abstract description 8
- 238000009825 accumulation Methods 0.000 abstract description 5
- 238000009434 installation Methods 0.000 abstract description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
Abstract
The utility model discloses a fuse current monitoring device. The device comprises three single-phase current transformers and a high speed electric power waveform record analyzer. The device is characterized in that the three single-phase current transformers are respectively disposed at end parts of primary sides of a three-phase electromagnetic voltage transformer. The high speed electric power waveform record analyzer is connected to the secondary current signal output by the three single-phase current transformers and the secondary voltage signal of the three-phase electromagnetic voltage transformer. In cooperation with the high speed electric power waveform record analyzer, the current transformers can record a steep-sided pulse current and a lightning current waveform. After usage, the device can automatically monitor and record actual data of a fuse loop current, and provide effective data accumulation for frequent fusing reason analysis of the fuse. The installation of the device causes no change of the original wiring in a voltage change vehicle and causes no influence to the operation of the operating personnel.
Description
Technical field
The utility model relates to a kind of monitoring device, more specifically, relates to a kind of fuse current monitoring device.
Background technology
GB GB15166.2-2008 < < ac high-voltage fuse current-limiting fuse > > points out; protection presses the fuse becoming to be mainly used to as spacer assembly, and the pressure of fault is become and isolated from system.This fuse can not guarantee that voltage transformer (VT) itself is not damaged, and the selection of fuse is only limited to it can bear the exciting rush current of pressing change.As can be seen here, fuse frequently fuses, and presses to become and also bears corresponding exciting current impact, finds out the reason of fuse failure and is eliminated, and is conducive to protection and presses change itself.Meanwhile, find out the reason of the frequent fusing of fuse, can be switch cubicle transformation effective foundation is provided.
The article of the frequent fusing of relevant electromagnetic potential transformer fuse is a lot of, most articles think that ferro-resonance over-voltage causes, but great majority are theoretical analysis just, research majority rests on surface, there is no on-the-spot real data support, whether fuse failure reason is really ferroresonance, or low-frequency current, or other reasons is a puzzling mystery always.
The immediate cause that causes the frequent fusing of fuse is fuse loop current, but because being loaded on to press, fuse becomes cabinet pressure change high-pressure side, and press and become no current monitoring equipment in cabinet, cause fuse loop current cannot monitor always, at present the analysis great majority of fuse failure reason are only rested on to theory stage, lack active data and support.
Given this, be necessary to provide a kind of fuse current monitoring device, can automatically monitor and record afterwards the real data of fuse loop current in use, for the frequent causes of fuse analysis of fuse provides effective data accumulation.
Summary of the invention
(1) problem that will solve
The purpose of this utility model is to provide a kind of fuse current monitoring device, can automatically monitor and record afterwards the real data of fuse loop current in use, for the frequent causes of fuse analysis of fuse provides effective data accumulation.
(2) technical scheme
For addressing the above problem, the utility model proposes fuse current monitoring device, comprise three single-phase current transformers and high-speed power waveform recording and analyzing instrument, it is characterized in that three single-phase current transformers are separately positioned on three-phase electricity magnetic-type voltage transformer (VT) primary side end, described high-speed power waveform recording and analyzing instrument connects the secondary current signal of described three current transformers output and the secondary voltage signal of three-phase electricity magnetic-type voltage transformer (VT).
As preferably, described current transformer is arranged on presses the car lower raft place that diminishes, and does not affect and presses the car operation that diminishes.
As preferably, described current transformer coordinates high-speed power waveform recording and analyzing instrument can record steep-sided pulse electric current, lightning current waveform.
As preferably, the described direct ground connection in electromagnetic potential transformer primary side end X place or through low resistance grounding.
(3) beneficial effect
Fuse current monitoring device of the present utility model, can automatically monitor and record afterwards the real data of fuse loop current in use, for the frequent causes of fuse analysis of fuse provides effective data accumulation, thereby change, at present the analysis great majority of fuse failure reason are only rested on to theory stage, lack the present situation that active data supports.
The accumulation of fuse current data contributes to find out the reason of fuse failure, can be switch cubicle transformation effective foundation is provided.And then formulation modification scheme, eliminate the fuse phenomenon that frequently fuses, change itself is pressed in protection, reduces the workload that operations staff frequently changes fuse, and reduction operational risk, has potential safety benefit and social benefit.
Accompanying drawing explanation
The accompanying drawing that forms the application's a part is used to provide further understanding of the present utility model, and schematic description and description of the present utility model is used for explaining the utility model, does not form improper restriction of the present utility model.
Fig. 1 is the structural representation of the utility model fuse current monitoring device;
Fig. 2 is the secondary voltage signal schematic representation of three-phase electricity magnetic-type voltage transformer (VT);
The signal connection diagram of Fig. 3 high-speed power waveform recording and analyzing instrument and current transformer and electromagnetic potential transformer.
Embodiment
Below by embodiment, and by reference to the accompanying drawings, the technical solution of the utility model is described in further detail.
Embodiment: as shown in Figure 1, the utility model fuse current monitoring device, comprise three single-phase current transformer CT1, CT2, CT3 and high-speed power waveform recording and analyzing instruments, three single-phase current transformer CT1, CT2, CT3 are separately positioned on three-phase electricity magnetic-type voltage transformer pt primary side end X, and described high-speed power waveform recording and analyzing instrument connects described three Current Transmits 1, the secondary current signal of CT2, CT3 output and the secondary voltage signal of three-phase electricity magnetic-type voltage transformer pt.
At distribution network systems bus, press and become in cabinet, the pressure car that diminishes is connected on bus, by being contained in Current Transmit 1, CT2, the CT3 measurement at electromagnetic potential transformer PT primary side end X place, flow through the electric current of fuse F, high-speed power waveform recording and analyzing instrument is for the secondary current signal of record current mutual inductor CT1, CT2, CT3 output.
Described Current Transmit 1, CT2, CT3 is arranged on and presses the car lower raft place that diminishes.
Described Current Transmit 1, CT2, CT3 coordinate high-speed power waveform recording and analyzing instrument can record steep-sided pulse electric current, lightning current waveform.
The described direct ground connection in electromagnetic potential transformer PT primary side end X place or through low resistance grounding.
The installation of fuse current monitoring device does not change the wiring that original pressure diminishes on car, does not affect operations staff's operation.
The foregoing is only specific embodiment of the utility model, but architectural feature of the present utility model is not limited to this, any those skilled in the art is in field of the present utility model, and the variation of doing or modification are all encompassed among the scope of the claims of the present utility model.
Claims (3)
1. fuse current monitoring device, comprise three single-phase current transformers (CT1, CT2, CT3) and high-speed power waveform recording and analyzing instrument, it is characterized in that three single-phase current transformers (CT1, CT2, CT3) are separately positioned on three-phase electricity magnetic-type voltage transformer (VT) (PT) primary side end (X), described high-speed power waveform recording and analyzing instrument connects the secondary current signal of described three current transformers (CT1, CT2, CT3) output and the secondary voltage signal of three-phase electricity magnetic-type voltage transformer (VT) (PT).
2. fuse current monitoring device according to claim 1, is characterized in that described current transformer (CT1, CT2, CT3) is arranged on to press the car lower raft place that diminishes.
3. fuse current monitoring device according to claim 1, is characterized in that described electromagnetic potential transformer (PT) primary side end (X) is located direct ground connection or through low resistance grounding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320824411.3U CN203732604U (en) | 2013-12-12 | 2013-12-12 | Fuse current monitoring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320824411.3U CN203732604U (en) | 2013-12-12 | 2013-12-12 | Fuse current monitoring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203732604U true CN203732604U (en) | 2014-07-23 |
Family
ID=51202666
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320824411.3U Expired - Fee Related CN203732604U (en) | 2013-12-12 | 2013-12-12 | Fuse current monitoring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203732604U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104316750A (en) * | 2014-11-13 | 2015-01-28 | 云南电网公司电力科学研究院 | Semi-insulating voltage transformer primary winding current monitoring device |
| CN107850633A (en) * | 2015-07-20 | 2018-03-27 | 库珀技术公司 | power fuse current sensing system and monitoring method |
-
2013
- 2013-12-12 CN CN201320824411.3U patent/CN203732604U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104316750A (en) * | 2014-11-13 | 2015-01-28 | 云南电网公司电力科学研究院 | Semi-insulating voltage transformer primary winding current monitoring device |
| CN107850633A (en) * | 2015-07-20 | 2018-03-27 | 库珀技术公司 | power fuse current sensing system and monitoring method |
| CN108351376A (en) * | 2015-07-20 | 2018-07-31 | 伊顿智能动力有限公司 | electric fuse current sensing system and monitoring method |
| CN108351376B (en) * | 2015-07-20 | 2020-09-08 | 伊顿智能动力有限公司 | Electrical fuse current sensing system and monitoring method |
| CN107850633B (en) * | 2015-07-20 | 2021-09-28 | 伊顿智能动力有限公司 | Power fuse current sensing system and monitoring method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103713210A (en) | Dry power transformer monitoring and diagnosis system | |
| CN203276027U (en) | Digital dynamic closed-loop test system of electricity smooth and steady supply device | |
| CN201509087U (en) | Reactive compensation intelligent observing and controlling terminal of high-voltage line | |
| CN204789825U (en) | Novel multi -functional distribution maintenance monitoring facilities | |
| CN109470914A (en) | A kind of VFTO signal measurement apparatus | |
| CN202837423U (en) | Wireless GPRS wind power power grid electric energy quality detection device based on DSP and ARM | |
| CN203732604U (en) | Fuse current monitoring device | |
| CN203178369U (en) | Bushing monitoring system for intelligent substation | |
| CN202256512U (en) | Multifunctional phase check instrument | |
| CN103335715A (en) | System for monitoring temperature of high-tension switch cabinet | |
| CN101949975A (en) | Intelligent electric power quantity metering instrument | |
| CN201716364U (en) | Combined high voltage electroscope | |
| CN202854224U (en) | Transformer-cutting-off no-load overvoltage on-line monitoring system used for finery transformer in steel plant | |
| CN205120774U (en) | Sensor supporting device | |
| CN203466140U (en) | Simulation fuse | |
| CN203326550U (en) | Overcurrent protection device | |
| CN103487635A (en) | High voltage induction wireless electrified indicating device | |
| CN103474297B (en) | Simulated fuse protector | |
| CN203949969U (en) | Residual current monitoring warning device | |
| CN213367635U (en) | Operation overvoltage generation circuit | |
| CN203720222U (en) | Isolation transformer for partial discharge detection of distribution transformer | |
| CN213689810U (en) | Low-voltage testing tool for capacitor inductance plate | |
| CN201335864Y (en) | Online insulation monitoring instrument for capacitive device | |
| CN102163495A (en) | Voltage transformer | |
| CN202548646U (en) | Test platform for electric energy quality control device |
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: 20140723 Termination date: 20201212 |