CN105048430A - Gird-connected switch auxiliary arc-extinguishing device provided with automatic discharging control device for micro grid - Google Patents
Gird-connected switch auxiliary arc-extinguishing device provided with automatic discharging control device for micro grid Download PDFInfo
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- CN105048430A CN105048430A CN201510474824.7A CN201510474824A CN105048430A CN 105048430 A CN105048430 A CN 105048430A CN 201510474824 A CN201510474824 A CN 201510474824A CN 105048430 A CN105048430 A CN 105048430A
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- grid
- switch auxiliary
- auxiliary arc
- rectification circuit
- resistance
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Abstract
The invention discloses a grid-connected switch auxiliary arc-extinguishing device provided with an automatic discharging control device for a micro grid. The grid-connected switch auxiliary arc-extinguishing device comprises a current transformer, a non-controlled rectification circuit, a discharging device and a damping resistor, wherein a primary side of the current transformer is connected with a PPC, a secondary side of the current transformer is connected with the input end of the non-controlled rectification circuit, the output end of the non-controlled rectification circuit is connected with the input end of the discharging circuit, the output end of the discharging circuit is connected with the damping resistor, and the damping resistor is grounded. By the grid-connected switch auxiliary arc-extinguishing device, the electric energy of the power grid cannot be consumed during normal running of the power grid, the normal running state of the power grid is automatically recovered after arc extinguishing, energy saving demand is met, and meanwhile, compared with the traditional device, the grid-connected switch auxiliary arc-extinguishing device has the advantages of low construction cost, low requirement for technology and low maintenance cost.
Description
Technical field
The present invention relates to a kind of micro-grid connection switch auxiliary arc extinction device with control device of automatically releasing, belong to arc extinguishing field when power electronic technology is applied to micro-grid connection or excises fault.
Background technology
The modes such as the useful liquid of existing arc-suppressing method or gas-blast, multi-break blow-out, vacuum extinction, special media arc extinguishing.
Now more common is heavy wool formula arc-control device, but this device consumption steel is large, oil consumption large, and volume is large; Less oil is easily deteriorated, often need overhaul or change oil, and needs a set of oil processing mode, unsuitable frequent operation; Compressed air type complex structure, technique and material requirements high, when cut-offfing, noise is large, and maintenance cycle is long, needs a set of blowing plant; Special media formula technique and seal request are strictly, high to material requirements; Vacuum type arc control device Design and material requires high.Generally speaking the cost of traditional arc-control device high, demand strict technology, maintenance cost is high.
Summary of the invention
In order to solve the problems of the technologies described above, the invention provides a kind of micro-grid connection switch auxiliary arc extinction device with control device of automatically releasing.
In order to achieve the above object, the technical solution adopted in the present invention is:
There is the micro-grid connection switch auxiliary arc extinction device of control device of automatically releasing, comprise current transformer, uncontrollable rectification circuit, leadage circuit and damping resistance; The primary side of described current transformer is connected with PPC, secondary side is connected with the input of uncontrollable rectification circuit, the described output of uncontrollable rectification circuit is connected with the input of leadage circuit, and the output of described leadage circuit is connected with damping resistance, described damping resistance ground connection.
Described uncontrollable rectification circuit forms primarily of diode.
Described leadage circuit comprises electric capacity, IGBT and the first resistance; One end of described first resistance is respectively one end of electric capacity and the gate pole connection of IGBT, the collector electrode of described IGBT is connected with the other end of the first resistance, the external damping resistance of emitter of described IGBT, the other end of described electric capacity and the external uncontrollable rectification circuit of the tie point of the first resistance and IGBT collector electrode.
The beneficial effect that the present invention reaches: the present invention can not loss electrical network electric energy when micro-capacitance sensor normally runs, and the normal run time behaviour of electrical network can be automatically restored to after arc extinguishing, meet energy-conservation demand, simultaneously compared with traditional device, cost is low, technical requirement is not high, maintenance cost is low.
Accompanying drawing explanation
Fig. 1 is circuit block diagram of the present invention.
Fig. 2 is the circuit diagram of leadage circuit.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described.Following examples only for technical scheme of the present invention is clearly described, and can not limit the scope of the invention with this.
As shown in Figure 1, there is the micro-grid connection switch auxiliary arc extinction device of control device of automatically releasing, comprise current transformer, uncontrollable rectification circuit, leadage circuit and damping resistance R.
Syndeton is as follows: the primary side of current transformer is connected with PPC, secondary side is connected with the input of uncontrollable rectification circuit, the described output of uncontrollable rectification circuit is connected with the input of leadage circuit, the output of described leadage circuit is connected with damping resistance R, described damping resistance R ground connection.
Above-mentioned uncontrollable rectification circuit forms primarily of diode, and this circuit is an available circuit, does not describe in detail here.
Above-mentioned leadage circuit as shown in Figure 2, comprises electric capacity C, IGBT and the first resistance R1; One end of first resistance R1 is respectively one end of electric capacity C and the gate pole connection of IGBT, the collector electrode of IGBT is connected with the other end of the first resistance R1, the other end of the external damping resistance R of emitter of IGBT, electric capacity C and the external uncontrollable rectification circuit of tie point of the first resistance R1 and IGBT collector electrode.
The course of work of said apparatus is as follows:
After PCC disconnects, electric current I on transmission line increases suddenly, as I>Im (Im is operating current), current transformer produces a higher voltage at secondary side, produces the cut-in voltage that high voltage meets or exceeds IGBT, make IGBT open-minded by uncontrollable rectification circuit at the electric capacity C of leadage circuit, thus electric current flows through from damping resistance R, finally reach shunting action, the electric current in transmission line is reduced fast, reaches arc extinguishing object.When in circuit, electric current is less than Im, IGBT closes automatically, not loss power grid energy.
Said apparatus can not loss electrical network electric energy when micro-capacitance sensor normally runs, and can automatically restore to the normal run time behaviour of electrical network after arc extinguishing, meets energy-conservation demand, and simultaneously compared with traditional device, cost is low, technical requirement is not high, maintenance cost is low.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the prerequisite not departing from the technology of the present invention principle; can also make some improvement and distortion, these improve and distortion also should be considered as protection scope of the present invention.
Claims (3)
1. there is the micro-grid connection switch auxiliary arc extinction device of control device of automatically releasing, it is characterized in that: comprise current transformer, uncontrollable rectification circuit, leadage circuit and damping resistance;
The primary side of described current transformer is connected with PPC, secondary side is connected with the input of uncontrollable rectification circuit, the described output of uncontrollable rectification circuit is connected with the input of leadage circuit, and the output of described leadage circuit is connected with damping resistance, described damping resistance ground connection.
2. the micro-grid connection switch auxiliary arc extinction device with control device of automatically releasing according to claim 1, is characterized in that: described uncontrollable rectification circuit forms primarily of diode.
3. the micro-grid connection switch auxiliary arc extinction device with control device of automatically releasing according to claim 1, is characterized in that: described leadage circuit comprises electric capacity, IGBT and the first resistance; One end of described first resistance is respectively one end of electric capacity and the gate pole connection of IGBT, the collector electrode of described IGBT is connected with the other end of the first resistance, the external damping resistance of emitter of described IGBT, the other end of described electric capacity and the external uncontrollable rectification circuit of the tie point of the first resistance and IGBT collector electrode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510474824.7A CN105048430B (en) | 2015-08-06 | 2015-08-06 | Micro-grid connection switch auxiliary arc extinction device with control device of releasing automatically |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510474824.7A CN105048430B (en) | 2015-08-06 | 2015-08-06 | Micro-grid connection switch auxiliary arc extinction device with control device of releasing automatically |
Publications (2)
| Publication Number | Publication Date |
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| CN105048430A true CN105048430A (en) | 2015-11-11 |
| CN105048430B CN105048430B (en) | 2017-10-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510474824.7A Active CN105048430B (en) | 2015-08-06 | 2015-08-06 | Micro-grid connection switch auxiliary arc extinction device with control device of releasing automatically |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4991051A (en) * | 1986-09-12 | 1991-02-05 | Northern Telecom Limited | Protection arrangements for communications lines |
| CN2085092U (en) * | 1991-03-01 | 1991-09-18 | 赵为政 | A.c. arc-suppressing electronic module |
| CN102427225A (en) * | 2011-12-28 | 2012-04-25 | 上海施能电器设备厂 | TVS (transient voltage suppressor) current peak protective circuit |
| US20130222954A1 (en) * | 2012-02-29 | 2013-08-29 | Stmicroelectronics (Rousset) Sas | Electrostatic discharge protection circuit |
| CN104300520A (en) * | 2014-11-06 | 2015-01-21 | 大全集团有限公司 | Power supply energy discharge simulation load circuit of electronic release and discharge management circuit |
| CN204835519U (en) * | 2015-08-06 | 2015-12-02 | 国家电网公司 | Little electric wire netting supplementary arc control device of switch that is incorporated into power networks with automatically, controlling means releases |
-
2015
- 2015-08-06 CN CN201510474824.7A patent/CN105048430B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4991051A (en) * | 1986-09-12 | 1991-02-05 | Northern Telecom Limited | Protection arrangements for communications lines |
| CN2085092U (en) * | 1991-03-01 | 1991-09-18 | 赵为政 | A.c. arc-suppressing electronic module |
| CN102427225A (en) * | 2011-12-28 | 2012-04-25 | 上海施能电器设备厂 | TVS (transient voltage suppressor) current peak protective circuit |
| US20130222954A1 (en) * | 2012-02-29 | 2013-08-29 | Stmicroelectronics (Rousset) Sas | Electrostatic discharge protection circuit |
| CN104300520A (en) * | 2014-11-06 | 2015-01-21 | 大全集团有限公司 | Power supply energy discharge simulation load circuit of electronic release and discharge management circuit |
| CN204835519U (en) * | 2015-08-06 | 2015-12-02 | 国家电网公司 | Little electric wire netting supplementary arc control device of switch that is incorporated into power networks with automatically, controlling means releases |
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| Publication number | Publication date |
|---|---|
| CN105048430B (en) | 2017-10-24 |
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