CN2859885Y - High-velocity liquid limit circuit breaker - Google Patents
High-velocity liquid limit circuit breaker Download PDFInfo
- Publication number
- CN2859885Y CN2859885Y CN 200520077086 CN200520077086U CN2859885Y CN 2859885 Y CN2859885 Y CN 2859885Y CN 200520077086 CN200520077086 CN 200520077086 CN 200520077086 U CN200520077086 U CN 200520077086U CN 2859885 Y CN2859885 Y CN 2859885Y
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- Prior art keywords
- current
- branch
- circuit breaker
- diffluence
- fuse
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- Expired - Fee Related
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Abstract
A high-velocity liquid limit circuit breaker, is characterized in that, a diffluence branch is composed of a lineary liquid limit resistance having an independent structure and an assistant diffluence fuse connected in series, and a three-branch circuit in parallel is composed of a diffluence branch, a main current loading bridge and a high energy oxide zinc converter connected in parallel, wherein the action of the main current loading bridge is controlled by the high voltage pulse trigger signal outputted by the high voltage generator. The utility model has strong anti-interference ability, fast response speed, large capacitance, low producing and maintaining cost, which can be widely used in the single-phase alternating current-direct current power supply system for fast cutting the short circuit, or combined in three-phase, applied in the three-phase power system for limiting the system short current, and reducing the excessive current impacting harm.
Description
Technical field:
The utility model relates to short-circuit protection, a kind of Power System Shortcuts protective device of more specifically saying so.
Background technology:
Along with the quickening of industrialization of the country process, as the electric energy of the principal mode of energy supply, its supply requirement is also in continuous increase.Ever-increasing electric energy consumption demand has been accelerated the trend of electric power system to big capacity, macroreticular, big sense of current development, simultaneously multisystem be incorporated into the power networks power supply help electric energy rational management, improve the region imbalance of power supplying efficiency, balanced feeding.But expansion along with the connection scale of electric power networks, the short-circuit current of system's interface is also increasing, depends merely on traditional current limiting reactor, fuse, and restriction such as switch and disengagement failure manifested its shortcoming aspect a lot, mainly comprises the following aspects:
1, for the reinforcement extending capacity reformation of original system, because of the original system finite capacity, be incorporated into the power networks and cause the short circuit current of system's internal fault point sharply to increase for generating, the electric power of its generation is impacted and thermal energy impacts and will produce strong destruction to equipment, surpass the former design level of system, cause relevant device to damage, reduced system reliability.
2, in new system process of construction, just improve and cut-off the short circuit current of dealing with increase with the rupturing capacity of circuit breaker, the capacity of other equipment that are in series with it in the system also needs upgrading, and its manufacturing technology level and cost will further promote.
3, the current limiting reactor of connecting in system for limiting short-circuit current has strengthened the system capacity loss, has reduced power supply quality, and during the simultaneity factor dilatation, current limiting reactor also needs to change, and causes the increase of operating cost, is unfavorable for that system plans for a long time.
4, under the prerequisite of appropriate design, though conventional current limiting reactor can reduce the system short-circuit electric current, short circuit current is maintained in the connecting-disconnecting function scope of circuit breaker, but reactor can not change the zero-crossing timing of short circuit current, main circuit breaker need just can cut-off short circuit current through several cycles, though main circuit breaker can bear, the equipment in the network comprises that transmission of electricity cable etc. all will bear the impact of the peak current that opens circuit several times, to produce cumulative damage to equipment, shorten its useful life.
At present, for solving conventional method that this type of problem adopts, reduce system power as the elevator system supply power voltage; Adopt high impedance device, reduce supply current; Change system constituted mode increases feeder line and electric substation's quantity; Adopt current limiting reactor to cut apart bus and each circuit; System impedance when adopting current-limiting apparatus raising accident reduces circuital current, or the like, all be difficult to fundamentally efficient low addressing these problems of dropping into.For this reason, people begin to start with from rapid on-off apparatus, have designed the QA speed-sensitive switch of multiple employing priming system.
On December 17th, 2003, the patent No. of bulletin was the quick current-limiting protection device of ZL03219156.1; it is the modified model of another high capacity and high speed switchgears patent; it can effectively be implemented in the uppity problem of shunting between main current in system's normal course of operation and the branch flow fuse in parallel with it; be applied in the technical problem that can effectively solve big short circuit current quick-speed turning on-off in the electric power system, but also have certain technical deficiency: mainly show:
1, the capacitance that is series on the fuse FU is selected difficulty.Show: as adopt jumbo electric capacity, though the effective shunting can guarantee fault the time exists bulkyly, difficulty is installed, the problem of a series of reality of trouble is isolated in insulation; As adopt low capacity electric capacity, though volume is easy to install for a short time, but there is another huge hidden danger: because of the existence of electric capacity, when fault took place, the effective current in the diverter branch was little, and fuse might take place can't normally fuse, the commutation course failure, huge arc energy all is added on the ZnO resistors at short notice, causes it to bear and explosive decomposition, or its therefore puncture short cause cut-offfing failure and bring out serious consequence.
2, the voltage that is series at the electric capacity on the fuse FU is selected difficulty.Show: as adopting low-voltage capacitance, though volume is little, its inevitable puncture short damages and causes moving the cost increase during failure on-off, changes time lengthening, reduces the plant maintenance performance; As adopt high-voltage capacitance, chat practical problems such as the installation and the isolation of becoming attached to before then facing equally.
3, after fuse FU cut-off, the residual voltage that the capacitor two ends might exist did not have the release loop, when causing plant maintenance the personal safety accident may take place.
Summary of the invention:
The utility model is for avoiding above-mentioned existing in prior technology weak point, a kind of high speed current limiting circuit breaker is provided, under the prerequisite of guaranteeing quick-speed turning on-off and limiting short-circuit current, further improve the reliability of equipment self, and reduce production costs and move maintenance cost.
The technical scheme that the utility model technical solution problem is adopted is:
Design feature of the present utility model is to be in series by the linear current-limiting resistance R of absolute construction and auxiliary branch flow fuse FU to constitute diverter branch, and constitute three branch's parallel circuitss by described diverter branch and main current-carrying bridge KQ, high energy ZnO converter RI are parallel with one another, wherein, the action of described main current-carrying bridge KQ is controlled by the high-voltage pulse triggering signal that electric current controller JK exports in high pressure generator HV.
Design feature of the present utility model is that also described main current-carrying bridge has the insensitiveness fuse of no ignition charge, and adopts the igniting of high pressure macro-energy signal to trigger.
The utility model is because of being in series with independently linear current-limiting resistance R in auxiliary the branch in the flow fuse FU branch road, by this resistance of choose reasonable, the electric current that flows through in this branch road in the time of can guaranteeing operate as normal is less, be generally main current-carrying bridge KQ and flow through 1/tens of electric current, therefore auxiliary divide that flow fuse is optional selects less rated operational current, also can partly share the electric current of main current-carrying bridge KQ, reduce the through-flow conductor size of current-carrying bridge KQ to a certain extent.This version circuit does not exist electric current to distribute not wield problem, the variety of issue that does not also exist the use because of capacitor to cause, and the resistance of independently linear current-limiting resistance R is only several ohm of zero points, and heating is very little during operate as normal.
Description of drawings:
Accompanying drawing is the utility model electrical block diagram.
Among the figure, JK is the electric current controller; KQ is main current-carrying bridge; R is the independently linear current-limiting resistance of structure, and FU is the auxiliary flow fuse that divides; RI is a high energy capacitance oxidization zinc converter; CT be current detecting with wide range of linearity current transformer, be mainly used in to JK the system power detection limit be provided; HV is a high pressure generator, and output triggers high-voltage pulse under the control of JK.
Embodiment:
Present embodiment is to be in series by the linear current-limiting resistance R of absolute construction and auxiliary branch flow fuse FU to constitute diverter branch, and constitute three branch's parallel circuitss by diverter branch and main current-carrying bridge KQ, high energy ZnO converter RI are parallel with one another, wherein, the action of main current-carrying bridge KQ is controlled by the high-voltage pulse triggering signal that electric current controller JK exports in high pressure generator HV.Main current-carrying bridge KQ has the insensitiveness fuse of no ignition charge, and adopts the igniting of high pressure macro-energy signal to trigger.
Adopt the current amplitude of linear current-limiting resistance restriction diverter branch, can increase substantially device reliability, reduce and produce and maintenance cost; The pontic contact fuze of main current-carrying bridge KQ adopts the no ignition charge detonator of insensitiveness, and igniter adopts high-tension ignition, and therefore anti-misoperation ability is strong; Main current-carrying bridge KQ operating member load be weight through the strict detonating explosive that calculates, shell adopts the high strength epoxy resin tube, is guaranteeing under the jumbo prerequisite that action response speed is exceedingly fast and safe and reliable.Can be widely used in and be used for excising fast short trouble in the blow-up DC power-supply system, also can three combinations, be applied to be used for the restriction system short circuit current in the three-phase ac power system, reduce overcurrent and impact harm.
The course of work:
Device integral body is connected between the circuit of power supply unit and protected equipment; during operate as normal; the overwhelming majority of system power flows through main current-carrying bridge KQ; sub-fraction flows through the auxiliary flow fuse FU that divides; preheating before moving; in case there is fault to take place; system power is undergone mutation; electric current controller JK detects this fault-signal; export high pressure macro-energy ignition signal immediately and be injected into the interior triggering portion of main current-carrying bridge KQ; current-carrying bridge KQ open circuit in the ms level time; the system short-circuit current transfer is divided in flow fuse FU and the branch road that linear current-limiting resistance R is connected to auxiliary; because of there is certain impedance in this branch road, short circuit current will no longer continue to rise, and the short circuit current that is transferred will be assisted the fuse failure in the branch flow fuse FU; the arc voltage that fusing process produces is opened high energy pressure limiting shunt RI; arc energy is by its fast Absorption and blow-out, thereby short trouble is excised the stage in the early stage, and amplitude of short circuit is limited in certain level.
Claims (2)
1, high speed current limiting circuit breaker, it is characterized in that by the linear current-limiting resistance (R) of absolute construction and an auxiliary flow fuse (FU) the formation diverter branch that is in series that divides, and by described diverter branch and main current-carrying bridge (KQ), high energy ZnO converter (RI) formation three branch's parallel circuitss parallel with one another, wherein, the action of described main current-carrying bridge (KQ) is controlled by the high-voltage pulse triggering signal that electric current controller (JK) is exported in high pressure generator (HV).
2, high speed current limiting circuit breaker according to claim 1 is characterized in that described main current-carrying bridge (KQ) has the insensitiveness fuse of no ignition charge, and adopts the igniting of high pressure macro-energy signal to trigger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520077086 CN2859885Y (en) | 2005-11-01 | 2005-11-01 | High-velocity liquid limit circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520077086 CN2859885Y (en) | 2005-11-01 | 2005-11-01 | High-velocity liquid limit circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2859885Y true CN2859885Y (en) | 2007-01-17 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520077086 Expired - Fee Related CN2859885Y (en) | 2005-11-01 | 2005-11-01 | High-velocity liquid limit circuit breaker |
Country Status (1)
| Country | Link |
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| CN (1) | CN2859885Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102290279A (en) * | 2011-06-30 | 2011-12-21 | 中国人民解放军海军工程大学 | High speed vacuum direct current (DC) current limiting circuit breaker |
| WO2013007134A1 (en) * | 2011-07-11 | 2013-01-17 | Han Yalan | Short-circuit current limiting and protection device for electrical circuit |
| CN103414175A (en) * | 2013-07-29 | 2013-11-27 | 西安交通大学 | Short-circuit fault current limiter |
| CN106921167A (en) * | 2017-03-02 | 2017-07-04 | 安徽伊格瑞德电气设备有限公司 | A kind of self-shield series compensation device based on high energy type fuse FU |
| CN110018277A (en) * | 2019-04-18 | 2019-07-16 | 北京今日蓝天科技有限公司 | A kind of protection shell, protective device and detection device |
| CN110383413A (en) * | 2017-02-08 | 2019-10-25 | 德恩欧洲股份两合公司 | Safety fuse for low pressure applications |
| CN111697532A (en) * | 2020-05-22 | 2020-09-22 | 华为技术有限公司 | Disconnection method and disconnection system of fuse |
-
2005
- 2005-11-01 CN CN 200520077086 patent/CN2859885Y/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102290279A (en) * | 2011-06-30 | 2011-12-21 | 中国人民解放军海军工程大学 | High speed vacuum direct current (DC) current limiting circuit breaker |
| WO2013007134A1 (en) * | 2011-07-11 | 2013-01-17 | Han Yalan | Short-circuit current limiting and protection device for electrical circuit |
| CN103414175A (en) * | 2013-07-29 | 2013-11-27 | 西安交通大学 | Short-circuit fault current limiter |
| CN110383413A (en) * | 2017-02-08 | 2019-10-25 | 德恩欧洲股份两合公司 | Safety fuse for low pressure applications |
| CN110383413B (en) * | 2017-02-08 | 2022-03-22 | 德恩塞两合公司 | Fuse protector for low voltage applications |
| CN106921167A (en) * | 2017-03-02 | 2017-07-04 | 安徽伊格瑞德电气设备有限公司 | A kind of self-shield series compensation device based on high energy type fuse FU |
| CN110018277A (en) * | 2019-04-18 | 2019-07-16 | 北京今日蓝天科技有限公司 | A kind of protection shell, protective device and detection device |
| CN110018277B (en) * | 2019-04-18 | 2022-05-03 | 北京今日蓝天科技有限公司 | Protective housing, protection device and detection device |
| CN111697532A (en) * | 2020-05-22 | 2020-09-22 | 华为技术有限公司 | Disconnection method and disconnection system of fuse |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: ANHUI SAIPU ELECTRIC CO., LTD Free format text: FORMER OWNER: LI YAN Effective date: 20100504 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 230011 ROOM 409, TIANYIGUOJI BUSINESS CENTER, NO.669, CHANGJIANG WEST ROAD,HEFEI CITY, ANHUI PROVINCE TO: 238335 YAOGOU INDUSTRIAL DISTRICT, WUWEI COUNTY, CHAOHU CITY, ANHUI PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20100504 Address after: 238335 Yao Gou Industrial Zone, Chaohu, Anhui, Wuwei County Patentee after: Anhui Saipu Electric Co., Ltd. Address before: 409, Tian Yi International Business Center, room 669, 230011 West Changjiang Road, Anhui, Hefei Patentee before: Li Yan |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070117 Termination date: 20121101 |