CN102487193A - Self-powered overcurrent protection device - Google Patents
Self-powered overcurrent protection device Download PDFInfo
- Publication number
- CN102487193A CN102487193A CN2010105747573A CN201010574757A CN102487193A CN 102487193 A CN102487193 A CN 102487193A CN 2010105747573 A CN2010105747573 A CN 2010105747573A CN 201010574757 A CN201010574757 A CN 201010574757A CN 102487193 A CN102487193 A CN 102487193A
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- CN
- China
- Prior art keywords
- protection device
- self
- panel
- protective device
- device body
- 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.)
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/20—Systems supporting electrical power generation, transmission or distribution using protection elements, arrangements or systems
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- Emergency Protection Circuit Devices (AREA)
Abstract
The invention relates to a self-powered overcurrent protection device, which has an inverse time lag protection function and a fixed time lag protection function and can be used for obviously increasing the load protection function of a power distribution network. The self-powered overcurrent protection device comprises a protection device body, wherein the protection device body is connected with a circuit breaker and an iron-core-type current transformer and comprises a panel, and a terminal block of a dial switch box and an S-485 communication interface are arranged on the panel.
Description
One, technical field:
The present invention relates to a kind of electric protection device, especially relate to a kind of self-powered overcurrent protective device.
Two, background technology:
In the background technology, existing current protective device is the protected mode of fuse application of load isolating switch, and the protection weak effect can not play effective protective effect to power equipment.
Three, summary of the invention:
The present invention provides a kind of self-powered overcurrent protective device in order to solve the weak point in the above-mentioned background technology, and it has inverse time lag and definite time protection function, can significantly improve power distribution network load protection function.
For realizing above-mentioned purpose, the technical scheme that the present invention adopts is:
A kind of self-powered overcurrent protective device; Comprise the protective device body, it is characterized in that: the protective device body is connected with iron core formula current transformer with circuit breaker, and the protective device body comprises panel; Panel is provided with dial switch box binding post, on the panel and be provided with the S-485 communication interface.
Compared with prior art, the advantage and the effect that have of the present invention is following:
The present invention is by the digital current protection relay of CT power supply, has inverse time lag and definite time protection function, aims at the switch cubicle that has circuit breaker and minimum output-current rating and designs.Be applicable to the place of the non-transformers such as 6 ~ 20kV ring main unit, switching station, distribution substation and the function that needs protection.Can cooperate circuit breaker to replace the protected mode of fuse application of load isolating switch fully, can significantly improve power distribution network load protection function.
Four, description of drawings:
Fig. 1 is a structural representation of the present invention;
Fig. 2 is a terminals subgraph of the present invention.
Among the figure, 1-circuit breaker, 2-iron core formula current transformer, 3-protective device body.
Five, embodiment:
Referring to Fig. 1; The present invention includes protective device body 3, protective device body 3 is connected with iron core formula current transformer 2 with circuit breaker 1, and protective device body 3 comprises panel; Panel is provided with dial switch box binding post, on the panel and be provided with the S-485 communication interface.The present invention is applicable to that secondary side is output as the conventional current instrument transformer of 1A.Output can drive conventional 24V or the monostable trip coil of 5A.Need not accessory power supply, draw power supply from the current transformer of primary circuit.Has selectable specified time/inverse time protection function.Except four standard anti-time limit characteristic-NI, VI, EI and LI, also have operating characteristicss such as RI, HV and FR fuse.The definite value parameter setting can be accomplished through the DIP dial switch, and is simple to operate, and dial switch is furnished with transparent protective cover.Compact design and mount scheme are particularly suitable for the application of ring main unit (RMU).Satisfy the applied environment of outdoor high humidity, high temperature or low temperature fully.Major function is for gathering electric weight: three-phase current, electric current full scale are realized the dynamic gain adjustment automatically.Main defencive function: A, three-phase current fast tripping protection, tripping operation outlet time scalable.B, three-phase specified time overcurrent protection (ANSI50/51), tripping operation outlet time scalable.C, the optional overcurrent protection of three-phase inverse time lag curve.Optional inverse time lag curve comprises: general inverse time lag, very inverse time lag, extreme inverse time lag, long-time inverse time lag, RI-inverse time lag, HV-fuse, FR-fuse.The present invention adopts the RS-485 communication interface, and the Modbus communication protocol is realized the data remote function.
Claims (1)
1. self-powered overcurrent protective device; Comprise protective device body (3); It is characterized in that: protective device body (3) is connected with iron core formula current transformer (2) with circuit breaker (1); Protective device body (3) comprises that panel, panel are provided with dial switch box binding post, on the panel and be provided with the S-485 communication interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105747573A CN102487193A (en) | 2010-12-06 | 2010-12-06 | Self-powered overcurrent protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105747573A CN102487193A (en) | 2010-12-06 | 2010-12-06 | Self-powered overcurrent protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102487193A true CN102487193A (en) | 2012-06-06 |
Family
ID=46152657
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105747573A Pending CN102487193A (en) | 2010-12-06 | 2010-12-06 | Self-powered overcurrent protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102487193A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103606963A (en) * | 2013-12-12 | 2014-02-26 | 国网上海市电力公司 | Distributed photovoltaic power station/380V user distributor box grid-integration structure |
| CN103606962A (en) * | 2013-12-12 | 2014-02-26 | 国网上海市电力公司 | Distributed photovoltaic power station/380V power grid overhead network grid-integration structure |
| CN103618337A (en) * | 2013-12-12 | 2014-03-05 | 国网上海市电力公司 | Grid-connected access structure of distributed photovoltaic power station and 10-kV power grid overhead line |
| CN106329498A (en) * | 2016-09-07 | 2017-01-11 | 合肥三冠包装科技有限公司 | Protection circuit for six-head balance main power circuit |
-
2010
- 2010-12-06 CN CN2010105747573A patent/CN102487193A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103606963A (en) * | 2013-12-12 | 2014-02-26 | 国网上海市电力公司 | Distributed photovoltaic power station/380V user distributor box grid-integration structure |
| CN103606962A (en) * | 2013-12-12 | 2014-02-26 | 国网上海市电力公司 | Distributed photovoltaic power station/380V power grid overhead network grid-integration structure |
| CN103618337A (en) * | 2013-12-12 | 2014-03-05 | 国网上海市电力公司 | Grid-connected access structure of distributed photovoltaic power station and 10-kV power grid overhead line |
| CN103618337B (en) * | 2013-12-12 | 2016-03-23 | 国网上海市电力公司 | The grid integration structure of a kind of distributed photovoltaic power station and 10kV electrical network overhead transmission line |
| CN106329498A (en) * | 2016-09-07 | 2017-01-11 | 合肥三冠包装科技有限公司 | Protection circuit for six-head balance main power circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120606 |