CN106849030A - A kind of high-voltage and current-limitation device based on current limliting zinc oxide FR - Google Patents
A kind of high-voltage and current-limitation device based on current limliting zinc oxide FR Download PDFInfo
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- CN106849030A CN106849030A CN201710121779.6A CN201710121779A CN106849030A CN 106849030 A CN106849030 A CN 106849030A CN 201710121779 A CN201710121779 A CN 201710121779A CN 106849030 A CN106849030 A CN 106849030A
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- current
- zinc oxide
- current limliting
- isolation switch
- voltage
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
- H02H7/261—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured involving signal transmission between at least two stations
- H02H7/262—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured involving signal transmission between at least two stations involving transmissions of switching or blocking orders
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- Emergency Protection Circuit Devices (AREA)
Abstract
The present invention relates to a kind of high-voltage and current-limitation device based on current limliting zinc oxide FR, including current limliting zinc oxide FR, high pressure quick break fuse FU, high-speed eddy switchs K0, electric discharge damper RL, and the first isolation switch G1, second isolation switch G2 and the 3rd isolation switch G3, electric discharge damper RL is connected in parallel on the two ends of current limliting zinc oxide FR after being connected with high-speed eddy switch both K0, high pressure quick break fuse FU is connected in parallel on the two ends of current limliting zinc oxide FR, the end of incoming cables of current limliting zinc oxide FR meets the end of incoming cables AL1 of high-voltage and current-limitation device by the first isolation switch G1, the leading-out terminal of current limliting zinc oxide FR meets the leading-out terminal AL2 of high-voltage and current-limitation device by the second isolation switch G2.The present invention can quickly put into current limliting zinc oxide FR, by current limliting zinc oxide FR can effective limiting short-circuit current intensity, greatly reduce impact of the short circuit current to electrical equipment, while user's terminal voltage is ensured, zero loss of current limliting zinc oxide FR can be realized again.
Description
Technical field
The present invention relates to power system current limliting zinc oxide technical field, especially a kind of high pressure based on current limliting zinc oxide FR
Current-limiting apparatus.
Background technology
With expanding economy, the sharp increase of electric load, the increase of net capacity, constantly the short circuit current of increase is to electricity
The impact of Force system electrical equipment is also increasing；Meanwhile, existing breaker has been difficult to cut-off huge short circuit current.Therefore it is
This great difficult problem is solved, the mode that current limiting element is concatenated in loop is widely used in power system electrical power trans mission/distribution system.
Though current limiting element series connection in the loop can limiting short-circuit current intensity, reduce short circuit current in power system electrically
The impact of equipment, maintains busbar voltage, it is to avoid the further expansion of short trouble.But series connection current limiting element has many deficiencies
Place, first, produces huge reactive loss also to cause very big financial burden to user in current limiting element series loop；Secondly,
When current limiting element is chosen, often exist after meeting the requirement of limiting short-circuit current, user terminal brownout under rated current
Contradiction.During the long distance delivery of power system transmission and distribution network, transmission line of electricity can also produce induction reactance, substantially wait similar shape
A kind of element into stealthy, potential concatenation user load loop, equally causes the reduction of user terminal voltage, at the same have again compared with
Big reactive loss.
The content of the invention
It is an object of the invention to provide a kind of safe and reliable, simple structure and current limliting thoroughly, short circuit can effectively be limited
The intensity of electric current, greatly reduces high-voltage and current-limitation device based on current limliting zinc oxide FR of the short circuit current to the impact of electrical equipment.
To achieve the above object, present invention employs following technical scheme：A kind of high pressure limit based on current limliting zinc oxide FR
Stream device, including current limliting zinc oxide FR, high pressure quick break fuse FU, use for quick input current limliting zinc oxide FR after system short-circuit
High-speed eddy switch K0 in short trouble excision backed off after random current limliting zinc oxide FR, for current limliting zinc oxide FR short circuits after limit punching
The electric discharge damper RL of electric current is hit, and for service without power-off or changes the first isolation switch G1 of component, the second isolation
Disconnecting link G2, the 3rd isolation switch G3, the electric discharge damper RL are connected in parallel on current limliting oxygen after being connected with high-speed eddy switch both K0
Change the two ends of zinc FR, the high pressure quick break fuse FU is connected in parallel on the two ends of current limliting zinc oxide FR, the end of incoming cables of current limliting zinc oxide FR
The end of incoming cables AL1 of high-voltage and current-limitation device is met by the first isolation switch G1, the leading-out terminal of current limliting zinc oxide FR is by the second isolation
Disconnecting link G2 meets the leading-out terminal AL2 of high-voltage and current-limitation device.
One end of the 3rd isolation switch G3 be connected on high-voltage and current-limitation device end of incoming cables AL1 and the first isolation switch G1 it
Between, between another leading-out terminal AL2 for terminating at high-voltage and current-limitation device of the 3rd isolation switch G3 and the second isolation switch G2.
The electric discharge damper RL is composed in parallel by inductance L and resistance R, one end of the electric discharge damper RL and current limliting oxygen
The end of incoming cables for changing zinc FR is connected, and the other end is connected with the end of incoming cables of high-speed eddy switch K0.
The high-speed eddy switch K0 is vacuum interrupter arc extinguishing breaker.
The current limliting zinc oxide FR, high pressure quick break fuse FU, high-speed eddy switch K0, electric discharge damper RL, the first isolation
Disconnecting link G1, the second isolation switch G2 and the 3rd isolation switch G3 are installed in power distribution cabinet, and the high-speed eddy switch K0 passes through
Controller in power distribution cabinet controls it to cut-off, and the first isolation switch G1, the second isolation switch G2 and the 3rd isolate
Disconnecting link G3 is connected with the operating mechanism in power distribution cabinet, is cut-off by manually controlling it.
As shown from the above technical solution, the present invention can quickly put into current limliting zinc oxide FR, can have by current limliting zinc oxide FR
The intensity of limiting short-circuit current is imitated, impact of the short circuit current to electrical equipment is greatly reduced, while user's terminal voltage is ensured,
Zero loss of current limliting zinc oxide FR can be realized again；Meanwhile, avoid being examined because having a power failure by first and second 3 isolation switch G1, G2, G3
Repair and bring economic loss.The features such as present invention has safe and reliable, simple structure and thorough tool current limliting.
Brief description of the drawings
Fig. 1 is electrical schematic diagram of the invention.
Specific embodiment
As shown in figure 1, a kind of high-voltage and current-limitation device based on current limliting zinc oxide FR, including current limliting zinc oxide FR, for being
The high pressure quick break fuse FU of current limliting zinc oxide FR is quickly put into after system short circuit, backed off after random current limliting zinc oxide is cut off for short trouble
The high-speed eddy switch K0 of FR, the electric discharge damper RL for limiting dash current after current limliting zinc oxide FR short circuits, and be used for
First isolation switch G1, the second isolation switch G2, the 3rd isolation switch G3, the electric discharge of service without power-off or replacing component
Damper RL is connected in parallel on the two ends of current limliting zinc oxide FR, the high pressure quick break fuse FU after being connected with high-speed eddy switch both K0
The two ends of current limliting zinc oxide FR are connected in parallel on, the end of incoming cables of current limliting zinc oxide FR connects high-voltage and current-limitation device by the first isolation switch G1
End of incoming cables AL1, the leading-out terminal of current limliting zinc oxide FR meets the leading-out terminal AL2 of high-voltage and current-limitation device by the second isolation switch G2.
As shown in figure 1, an end of the 3rd isolation switch G3 be connected on the end of incoming cables AL1 and first of high-voltage and current-limitation device every
Between disconnecting link G1, the isolation of another leading-out terminal AL2 for terminating at high-voltage and current-limitation device of the 3rd isolation switch G3 and second
Between disconnecting link G2.The electric discharge damper RL is composed in parallel by inductance L and resistance R, one end of the electric discharge damper RL and limit
The end of incoming cables of stream zinc oxide FR is connected, and the other end is connected with the end of incoming cables of high-speed eddy switch K0.Electric discharge damper RL is used to limit
The discharge impact electric current of current limliting zinc oxide FR processed, prevents current limliting zinc oxide FR from being damaged due to excessively stream, makes current limliting zinc oxide FR two
Terminal voltage can be limited in a relatively low level, substantially increase the frequency of the input current limliting of current limliting zinc oxide FR.
As shown in figure 1, the high-speed eddy switch K0 is vacuum interrupter arc extinguishing breaker.When hair in circuit on power system
Raw short trouble, after short trouble excision, controller controls high-speed eddy to switch K0 to close a floodgate immediately, so as to by current limliting zinc oxide FR
Short circuit, realizes zero loss of normal operation current limliting zinc oxide FR.The current limliting zinc oxide FR, high pressure quick break fuse FU, high speed whirlpool
Stream switch K0, electric discharge damper RL, the first isolation switch G1, the second isolation switch G2 and the 3rd isolation switch G3 are installed in and match somebody with somebody
In electric cabinet, the high-speed eddy switch K0 controls it to cut-off by the controller in power distribution cabinet, first isolation knife
Lock G1, the second isolation switch G2 and the 3rd isolation switch G3 are connected with the operating mechanism in power distribution cabinet, by artificial
It is controlled to cut-off.Service without power-off is realized by first, second and third isolation switch G1, G2, G3, reduces maintenance repair and failure inspection
The power failure range repaiied, greatly improves the reliability and security of power supply, while avoiding because interruption maintenance brings economic loss.It is high
Pressure quick break fuse FU is used for quick fuse during short circuit, and high pressure quick break fuse FU fusing generation arc voltages turn on current limliting zinc oxide FR,
Itself produce a larger impedance after current limliting zinc oxide FR conductings, can effective limiting short-circuit current intensity, greatly reduce short circuit
Impact of the electric current to electrical equipment.
Operation principle of the invention is：During the failure that is short-circuited, high pressure quick break fuse FU is used for quick fuse during short circuit, high
Pressing quick break fuse FU fusing generation arc voltages turns on current limliting zinc oxide FR, and itself generation one is larger after current limliting zinc oxide FR conductings
Impedance, can effective limiting short-circuit current intensity, greatly reduce harm of the short trouble to electrical equipment in power system.Short circuit
After failure removal, controller controls high-speed eddy to switch K0 combined floodgates immediately, so as to by current limliting zinc oxide FR short circuits, realize normal fortune
Zero loss of row current limliting zinc oxide FR.
Claims (5)
1. a kind of high-voltage and current-limitation device based on current limliting zinc oxide FR, it is characterised in that：Including current limliting zinc oxide FR, for system
The high pressure quick break fuse FU of current limliting zinc oxide FR is quickly put into after short circuit, backed off after random current limliting zinc oxide FR is cut off for short trouble
High-speed eddy switch K0, the electric discharge damper RL for limiting dash current after current limliting zinc oxide FR short circuits, and for not
First isolation switch G1, the second isolation switch G2, the 3rd isolation switch G3 of interruption maintenance or replacing component, the electric discharge resistance
Buddhist nun's device RL is connected in parallel on the two ends of current limliting zinc oxide FR after being connected with high-speed eddy switch both K0, the high pressure quick break fuse FU is simultaneously
The two ends of current limliting zinc oxide FR are associated in, the end of incoming cables of current limliting zinc oxide FR connects high-voltage and current-limitation device by the first isolation switch G1
End of incoming cables AL1, the leading-out terminal of current limliting zinc oxide FR meets the leading-out terminal AL2 of high-voltage and current-limitation device by the second isolation switch G2.
2. the high-voltage and current-limitation device based on current limliting zinc oxide FR according to claim 1, it is characterised in that：Described 3rd every
It is connected between the end of incoming cables AL1 of high-voltage and current-limitation device and the first isolation switch G1 from an end of disconnecting link G3, the 3rd isolation knife
Between another leading-out terminal AL2 for terminating at high-voltage and current-limitation device of lock G3 and the second isolation switch G2.
3. the high-voltage and current-limitation device based on current limliting zinc oxide FR according to claim 1, it is characterised in that：The electric discharge resistance
Buddhist nun's device RL is composed in parallel by inductance L and resistance R, the end of incoming cables phase of one end and current limliting zinc oxide FR of the damper RL that discharges
Even, the other end is connected with the end of incoming cables of high-speed eddy switch K0.
4. the high-voltage and current-limitation device based on current limliting zinc oxide FR according to claim 1, it is characterised in that：The high speed whirlpool
Stream switch K0 is vacuum interrupter arc extinguishing breaker.
5. the high-voltage and current-limitation device based on current limliting zinc oxide FR according to claim 1, it is characterised in that：The current limliting oxygen
Change zinc FR, high pressure quick break fuse FU, high-speed eddy switch K0, electric discharge damper RL, the first isolation switch G1, the second isolation switch
G2 and the 3rd isolation switch G3 are installed in power distribution cabinet, and the high-speed eddy switchs K0 by the control in power distribution cabinet
Device controls it to cut-off, the first isolation switch G1, the second isolation switch G2 and the 3rd isolation switch G3 be arranged on power distribution cabinet
In operating mechanism be connected, cut-off by manually controlling it.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710121779.6A CN106849030A (en) | 2017-03-02 | 2017-03-02 | A kind of high-voltage and current-limitation device based on current limliting zinc oxide FR |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710121779.6A CN106849030A (en) | 2017-03-02 | 2017-03-02 | A kind of high-voltage and current-limitation device based on current limliting zinc oxide FR |
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| Publication Number | Publication Date |
|---|---|
| CN106849030A true CN106849030A (en) | 2017-06-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710121779.6A Pending CN106849030A (en) | 2017-03-02 | 2017-03-02 | A kind of high-voltage and current-limitation device based on current limliting zinc oxide FR |
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| CN (1) | CN106849030A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2713641C1 (en) * | 2019-08-02 | 2020-02-05 | федеральное государственное бюджетное образовательное учреждение высшего образования "Ульяновский государственный технический университет" | Current-limiting device |
Citations (7)
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| CN202353174U (en) * | 2011-11-16 | 2012-07-25 | 安徽曼瑞特电气有限公司 | Combined protector of high-voltage current limiting fuse |
| CN203166809U (en) * | 2013-04-09 | 2013-08-28 | 居正电气(上海)有限公司 | High-voltage current-limiting motor protector |
| CN203883460U (en) * | 2014-04-02 | 2014-10-15 | 国家电网公司 | Explosion type short-circuit current limiter |
| CN204905874U (en) * | 2015-08-26 | 2015-12-23 | 安徽徽电科技股份有限公司 | Well high voltage electric network distributing type cascade compensation system |
| CN205646810U (en) * | 2016-05-12 | 2016-10-12 | 安徽尚途电力保护设备有限公司 | Well high voltage electric network arc extinction protection device |
| CN106099938A (en) * | 2016-06-24 | 2016-11-09 | 安徽尚途电力保护设备有限公司 | A kind of high-voltage fence series compensation device |
| CN206533122U (en) * | 2017-03-02 | 2017-09-29 | 安徽伊格瑞德电气设备有限公司 | A kind of high-voltage and current-limitation device based on current limliting zinc oxide FR |
-
2017
- 2017-03-02 CN CN201710121779.6A patent/CN106849030A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202353174U (en) * | 2011-11-16 | 2012-07-25 | 安徽曼瑞特电气有限公司 | Combined protector of high-voltage current limiting fuse |
| CN203166809U (en) * | 2013-04-09 | 2013-08-28 | 居正电气(上海)有限公司 | High-voltage current-limiting motor protector |
| CN203883460U (en) * | 2014-04-02 | 2014-10-15 | 国家电网公司 | Explosion type short-circuit current limiter |
| CN204905874U (en) * | 2015-08-26 | 2015-12-23 | 安徽徽电科技股份有限公司 | Well high voltage electric network distributing type cascade compensation system |
| CN205646810U (en) * | 2016-05-12 | 2016-10-12 | 安徽尚途电力保护设备有限公司 | Well high voltage electric network arc extinction protection device |
| CN106099938A (en) * | 2016-06-24 | 2016-11-09 | 安徽尚途电力保护设备有限公司 | A kind of high-voltage fence series compensation device |
| CN206533122U (en) * | 2017-03-02 | 2017-09-29 | 安徽伊格瑞德电气设备有限公司 | A kind of high-voltage and current-limitation device based on current limliting zinc oxide FR |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2713641C1 (en) * | 2019-08-02 | 2020-02-05 | федеральное государственное бюджетное образовательное учреждение высшего образования "Ульяновский государственный технический университет" | Current-limiting device |
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| PB01 | Publication | ||
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Application publication date: 20170613 |