CN205489499U - Harmless current limiting device - Google Patents
Harmless current limiting device Download PDFInfo
- Publication number
- CN205489499U CN205489499U CN201620148796.XU CN201620148796U CN205489499U CN 205489499 U CN205489499 U CN 205489499U CN 201620148796 U CN201620148796 U CN 201620148796U CN 205489499 U CN205489499 U CN 205489499U
- Authority
- CN
- China
- Prior art keywords
- current
- electricity
- transmission line
- control signal
- short circuit
- 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.)
- Active
Links
Landscapes
- Emergency Protection Circuit Devices (AREA)
Abstract
The utility model provides a harmless current limiting device relates to high -Voltage electrical appliances technical field for the realization restricts trouble short -circuit current. The device includes: detection module, a reverse current module, the 2nd reverse current module, fast switch module and current limiting inductance mould are fast, detection module is used for confirming whether short circuit and short -circuit current's direction of transmission line, a reverse current module and the 2nd reverse current module are used for output and short -circuit current opposite direction's electric current respectively to make the quick zero passage of short -circuit current, the switch fracture is broken off to the fast switch module after receiving detection module's signal, current -limiting inductance module is used for carrying out the current -limiting to short -circuit current. The embodiment of the utility model provides a make for current limiting device.
Description
Technical field
This utility model relates to high voltage electrical apparatus technical field, particularly relates to a kind of lossless current-limiting apparatus.
Background technology
Along with developing rapidly of national economy, power industry is also developing rapidly.The demand of electric energy is risen by people day by day, and reliable new and power supply quality the requirement to electric power system is more and more higher simultaneously.The demand of electric energy is risen by people day by day, the voltage in transmission line of electricity, electric current is made the most constantly to increase, and then when causing transmission line of electricity power delivery circuit that short circuit occurs, short circuit current in transmission line of electricity power delivery circuit can exceed the shutoff capacity of chopper, cause safety issue, it is thus desirable to peak point current when arranging current-limiting apparatus reduction transmission line of electricity short circuit in transmission line of electricity, alleviate the burden of cut-offfing of chopper, improve the ability to transmit electricity of circuit.
Current current-limiting apparatus can be divided mainly into new material type current-limiting apparatus and power electronics type current-limiting apparatus.Wherein, new material type current-limiting apparatus specifically includes that superconduction type current-limiting apparatus; superconduction type current-limiting apparatus has detection, conversion and current-limiting function; and current limliting speed is fast, but, under larger current, superconductor quenches and there is safety protection problem; it is thus desirable to the protective loop that design is complicated; affecting the stability that system is run, and it needs supporting refrigeration plant or rectifying installation, therefore energy consumption is relatively big, production cost is higher.Power electronics type current-limiting apparatus specifically includes that solid-state current-limiting apparatus and mode of resonance current-limiting apparatus.Solid-state current-limiting apparatus can carry out current limliting rapidly, flexibly to the short circuit current in transmission line of electricity, but, its energy consumption is higher.Mode of resonance current-limiting apparatus can also carry out rapidly current limliting to the short circuit current in transmission line of electricity, but the reactor power attenuation in mode of resonance current-limiting apparatus is relatively big, and then causes energy consumption relatively big, and resonant current limiter operation expense is the highest.
To sum up, current current-limiting apparatus all has certain limitation, and those skilled in the art urgently find a kind of lossless current-limiting apparatus.
Utility model content
Embodiment of the present utility model provides a kind of current-limiting apparatus, limits failed shorted electric current for realization.
For reaching above-mentioned purpose, embodiment of the present utility model adopts the following technical scheme that
First aspect, it is provided that a kind of lossless current-limiting apparatus, for limiting short circuit current when short circuit occurs in transmission line of electricity；Described current-limiting apparatus includes: detection module, the first reverse current module, the second reverse current module, high-speed switch module and current-limiting inductance mould are fast；
Described detection module is for determining transmission line of electricity whether short circuit and the direction of short circuit current；When the direction confirming short-circuit and described short circuit current is forward, described first control signal terminal sends control signal, when the direction of the short-circuit and described short circuit current of described transmission line of electricity is negative sense, sends control signal at described second control signal terminal；
Described first reverse current module connects described first control signal terminal and described transmission line of electricity two ends, for exporting negative current under the control of described first control signal terminal, and forms zero crossing with short circuit current effect；
Described second reverse current module connects described second control signal terminal and described transmission line of electricity two ends, for exporting forward current under the control of described second control signal terminal, and forms zero crossing with short circuit current effect；
Described high-speed switch module connects described first control signal terminal, described second control signal terminal and the head end of described transmission line of electricity and end, for disconnecting switch fracture under the control of described first control signal terminal or described second control signal terminal；
Described current-limiting inductance module, after disconnecting switch fracture in described high-speed switch module, is accepted the short circuit current shifting and limits described short circuit current.
Optionally, described first reverse current module includes: the first electric capacity, the first inductance and the first switch element；
The input of described first switch element connects the head end of described transmission line of electricity, and the outfan of described first switch element connects the head end of described first inductance；The control end of described first switch element connects described first control signal terminal；
The end of described first inductance connects the first pole of described first electric capacity；
Second pole of described first electric capacity connects the end of described transmission line of electricity.
Optionally, described first switch element is IGCT or Triggered Vacuum Switch.
Optionally, described second reverse current module includes: the second electric capacity, the second inductance and second switch unit；
The input of described second switch unit connects the end of described transmission line of electricity, and the outfan of described second switch unit connects the end of described second inductance；The control end of described second switch unit connects described second control signal terminal；
The head end of described second inductance connects the second pole of described second electric capacity；
First pole of described second electric capacity connects the head end of described transmission line of electricity.
Optionally, described second switch unit is IGCT or Triggered Vacuum Switch.
Optionally, described high-speed switch module includes: fast vacuum switch and controlling organization thereof；
The input of vacuum switch connects the head end of transmission line of electricity, and the outfan of vacuum switch connects the end of transmission line of electricity；
The controlling organization of described vacuum switch connects described first control signal terminal and described second control signal terminal.
Optionally, described current-limiting inductance module includes: the 3rd inductance；
The head end of described 3rd inductance connects the head end of described transmission line of electricity, and the end of described 3rd inductance connects the end of described transmission line of electricity.
Optionally, described detection module includes: sampling unit, judging unit and transmitting element；
Described sampling unit is for sampling to the electric current in described transmission line of electricity；
According to the electric current in described transmission line of electricity, described judging unit is for judging that described transmission line of electricity is the most short-circuit and judging the direction of short circuit current when described transmission line of electricity short circuit；
Described transmitting element is for exporting described control signal when the direction of the short-circuit and described short circuit current of described transmission line of electricity is forward at described first control signal terminal；
Described transmitting element is additionally operable to when the direction of the short-circuit and described short circuit current of described transmission line of electricity is negative sense export described control signal at described second control signal terminal.
The lossless current-limiting apparatus that this utility model embodiment provides includes: detection module, the first reverse current module, the second reverse current module, high-speed switch module and current-limiting inductance mould are fast, wherein, detection module determines transmission line of electricity whether short circuit and the direction of short circuit current, when transmission line of electricity short circuit, the direction of short circuit current are forward, exporting control signal at the first control signal terminal, the first reverse current module exports the negative current in opposite direction with short circuit current under control of the control signal；In transmission line of electricity short circuit, when the direction of short circuit current is negative sense, control signal is exported at the second control signal terminal, second reverse current module exports the forward current in opposite direction with short circuit current under control of the control signal, therefore the short circuit current in high-speed switch module can under the effect of reverse current quick zero passage, high-speed switch module can be fast disconnection switch fracture, and short circuit current is transferred in current-limiting inductance thus realize current limliting, again because electric current is by high-speed switch module when transmission line of electricity normally works, so transmission line of electricity normal work timing stream device is lossless.
Accompanying drawing explanation
In order to be illustrated more clearly that this utility model embodiment or technical scheme of the prior art, the accompanying drawing used required in embodiment or description of the prior art will be briefly described below, apparently, accompanying drawing in describing below is only embodiments more of the present utility model, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
The schematic diagram of the current-limiting apparatus that Fig. 1 provides for embodiment of the present utility model；
The schematic diagram of the current-limiting inductance module that Fig. 2 provides for embodiment of the present utility model；
One of circuit diagram of current-limiting apparatus that Fig. 3 provides for embodiment of the present utility model；
The two of the circuit diagram of the current-limiting apparatus that Fig. 4 provides for embodiment of the present utility model；
The three of the circuit diagram of the current-limiting apparatus that Fig. 5 provides for embodiment of the present utility model；
The flow chart of steps of the control method of the current-limiting apparatus that Fig. 6 provides for embodiment of the present utility model.
Detailed description of the invention
Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is clearly and completely described, it is clear that described embodiment is only a part of embodiment of this utility model rather than whole embodiments.Based on the embodiment in this utility model, the every other embodiment that those of ordinary skill in the art are obtained under not making creative work premise, broadly fall into the scope of this utility model protection.
It should be noted that the printed words such as " first ", " second " in the application be only used to function with act on essentially identical identical entry or similar item makes a distinction, the printed words such as " first ", " second " are not to be defined quantity and execution order.
Embodiment of the present utility model provides a kind of lossless current-limiting apparatus, for the short circuit current in transmission line of electricity being carried out current limliting when short circuit occurs in transmission line of electricity.Concrete, with reference to shown in Fig. 1, this current-limiting apparatus 10 includes:
Detection module the 11, first reverse current module the 12, second reverse current module 13, high-speed switch module 14 and current-limiting inductance mould fast 15.
Detection module 11 connects transmission line of electricity, the first control signal terminal CO1, the second control letter
Number terminal CO2, for determining transmission line of electricity whether short circuit and the direction of short circuit current；When transmission line of electricity short circuit and short circuit current are forward, export control signal at the first control signal terminal CO1, when transmission line of electricity short circuit and short circuit current are negative sense, export control signal at the second control signal terminal CO2.
In addition, in this utility model embodiment positively and negatively merely to limit a pair contrary direction, and it is not intended that concrete flow direction of electric current is defined, according to the definition difference to forward convection current, positively and negatively can exchange in this utility model embodiment.
Concrete, with reference to shown in Fig. 2, detection module 11 may include that sampling unit 111, judging unit 112 and transmitting element 113.
Concrete, sampling unit 111 is for sampling to the electric current in transmission line of electricity.
According to the electric current in transmission line of electricity, judging unit 112 is for judging that transmission line of electricity is the most short-circuit and judging the direction of short circuit current when described transmission line of electricity short circuit.
Transmitting element 113 is for exporting control signal when the direction of transmission line of electricity short circuit and short circuit current is forward at the first control signal terminal CO1；
Transmitting element 113 is additionally operable to when the direction of transmission line of electricity short circuit and short circuit current is negative sense export control signal at the second control signal terminal CO2.
Exemplary, it is judged that according to the electric current in transmission line of electricity, unit 112 judges whether short circuit is specifically as follows transmission line of electricity: judge that transmission line of electricity is the most short-circuit by the rate of change of the electric current in detection transmission line of electricity.Such as: if the rate of change of the electric current in transmission line of electricity exceedes preset range, then transmission line of electricity short circuit is judged.Further, it is judged that according to the electric current in transmission line of electricity, unit 112 judges whether short circuit can also be transmission line of electricity: the electric current in transmission line of electricity is carried out sampling analysis, whether exceedes limit value according to short circuit current size and determine that transmission line of electricity is the most short-circuit.These are only the preferred implementation that this utility model embodiment provides, and can not be as restriction of the present utility model, on the basis of above-described embodiment, those skilled in the art can also determine that transmission line of electricity is the most short-circuit by other means.
First reverse current module 12 connects first control end the first control signal terminal CO1 and the head end Input and end Output of transmission line of electricity, for exporting negative current under the control of the first control signal terminal CO1, and forms zero crossing with short circuit current effect.
Also, it should be noted the head end Input and end Output of the transmission line of electricity in this utility model embodiment are merely to distinguish different electric current ports rather than be defined sense of current.
Second reverse current module 13 connects the head end Input and end Output of the second control signal terminal CO2 and transmission line of electricity, for exporting forward current under the control of the second control signal terminal CO2, and forms zero crossing with short circuit current effect.
High-speed switch module 14 connects first control end the first control signal terminal CO1, the second control signal terminal CO2 and the head end of described transmission line of electricity and end, for disconnecting switch fracture under the control of described first control signal terminal CO1 or described second control signal terminal CO2.
Inductor module 15, after disconnecting switch fracture in high-speed switch module 14, is accepted the short circuit current shifting and limits short circuit current.
The current-limiting apparatus that this utility model embodiment provides includes: detection module, the first reverse current module, the second reverse current module, high-speed switch module and current-limiting inductance mould are fast, wherein, detection module determines transmission line of electricity whether short circuit and the direction of short circuit current, when transmission line of electricity short circuit, the direction of short circuit current are forward, exporting control signal at the first control signal terminal, the first reverse current module exports the negative current in opposite direction with short circuit current under control of the control signal；In transmission line of electricity short circuit, when the direction of short circuit current is negative sense, control signal is exported at the second control signal terminal, second reverse current module exports the forward current in opposite direction with short circuit current under control of the control signal, therefore the short circuit current in high-speed switch module can under the effect of reverse current quick zero passage, high-speed switch module can be fast disconnection switch fracture, and short circuit current is transferred in current-limiting inductance thus realize current limliting, again because electric current is by high-speed switch module when transmission line of electricity normally works, so transmission line of electricity normal work timing stream device is lossless.
Concrete, with reference to shown in Fig. 3, the first reverse current module 12 includes: the first electric capacity C1, the first inductance L1 and the first switch element T1；
Exemplary, the first switch element T1 can be IGCT or Triggered Vacuum Switch.In this utility model embodiment, for distinguishing transistor two ends in addition to controlling end, one input and output being gone out end and is referred to as input, another input/output terminal is referred to as outfan.By the form regulation intermediate ends in accompanying drawing for controlling end, current input terminal is input, current output terminal is outfan.Above, the preferred implementation that only this utility model provides, but can not mostly be restriction of the present utility model, the first switch element T1 in this utility model embodiment can also have the device turning on turn-off function for other.
The input of the first switch element T1 connects the head end Input of transmission line of electricity, the first switch
The outfan of unit T1 connects the head end of the first inductance L1；The control end of the first switch element T1 connects the first control signal terminal CO1；
The end of the first inductance L1 connects first pole of the first electric capacity C1；
Second pole of the first electric capacity C1 connects the end Output of transmission line of electricity.
Second reverse current module 13 includes: the second electric capacity C2, the second inductance L2 and second switch unit T2；
The input of second switch unit T2 connects the outfan Output of transmission line of electricity, and the end of second switch unit T2 connects the end of the second inductance L2；The control end of second switch unit T2 connects the second control signal terminal CO2；
The head end of the second inductance L2 connects second pole of the second electric capacity C2；
First pole of the second electric capacity C2 connects the head end Input of transmission line of electricity.
Ibid, second switch unit T2 can be IGCT or Triggered Vacuum Switch, and here is omitted.
High-speed switch module 14 includes: fast vacuum switch VCB and controlling organization (English name: Vacuum Circuit Breaker) thereof；
The input of vacuum switch VCB connects the end Output of the outfan connection transmission line of electricity of the head end Input, vacuum switch VCB of transmission line of electricity；
The controlling organization of described vacuum switch VCB connects described first control signal terminal CO1 and described second control signal terminal CO2.
Vacuum switch is a kind of a kind of vacuum device utilizing a pair contact sealed in a vacuum connection Yu breaking function to realize circuit；Including: the structure such as vacuum interrupter, repulsive force mechanism.When it disconnects the electric current of certain numerical value, dynamic, determine contact in the moment separated, current constriction to the certain point of contact or certain some on, resistance between electrode acutely increases and improves rapidly with temperature, until there is the evaporation of electrode metal, concurrently form high electric field intensity, cause puncturing of violent field emission and gap, produce vacuum arc, when operating current is close to zero, increase along with contact pitch simultaneously, the plasma of vacuum arc quickly spreads to surrounding, after arc current zero passage, the medium of contact gap is become insulator from electric conductor rapidly, electric current is turned off.
Current-limiting inductance module 15 includes: the 3rd inductance L3；
The head end of the 3rd inductance L3 connects the end Output of the end connection transmission line of electricity of the head end Input, the 3rd inductance L3 of transmission line of electricity.
Optionally, with reference to shown in Fig. 4, current-limiting inductance module 15 can also include: resistance R1.
The head end of resistance R1 connects the end Output of the end connection transmission line of electricity of the head end Input, resistance R1 of transmission line of electricity.
Additionally, the current limliting module 15 in this utility model embodiment can also include inductance and the resistance being serially connected.Concrete, with reference to shown in Fig. 5, current limliting module 15 includes: the 3rd inductance L3 of series connection and resistance L1.Certainly; on this basis; those skilled in the art also easily expect the current limliting module that the position of resistance and inductance carries out exchange or realize in this utility model embodiment by the connection in series-parallel of multiple inductance, resistance; but this broadly falls into the reasonable work-around solution of this utility model embodiment, the most all should contain within protection domain of the present utility model.
Exemplary, the rated voltage of the fast vacuum switch VCB in above-mentioned enforcement is 40.5KV, rated current is 40KA；The rated voltage of the 3rd inductance L3 is 40.5KV, rated current is 40KA, inductance ratings is 6.3mH；The rated voltage of the first inductance L1 and the second inductance L2 is 220V, rated current is 40KA, inductance ratings is 10uH；The rated voltage of the first electric capacity C1 and the second electric capacity C2 is 220V, rated current is 40KA, inductance ratings is 30mF；The rated voltage of the first switch element T1 and second switch unit T2 is 40.5KV, rated current is 40KA.
This utility model embodiment provides the control method of a kind of lossless current-limiting apparatus, for limiting short circuit current when transmission line of electricity short circuit.Exemplary, the control method of this current-limiting apparatus may be used for controlling the current-limiting apparatus in above-described embodiment.
With reference to shown in Fig. 6, the control method of this lossless current-limiting apparatus includes:
The direction of short circuit current when S61 determines described transmission line of electricity whether short circuit and transmission line of electricity short circuit.
In step S61, when the direction of transmission line of electricity short circuit and short circuit current is forward, perform step S62；When the direction of transmission line of electricity short circuit and short circuit current is negative sense, perform step S62.
S62, conducting negative current loop also export negative current.
S63, conduct positive current loop also export forward current.
S64, under the effect of forward current or negative current, high-speed switch disconnects switch fracture, and is transferred to by short circuit current in current limliting loop.
Short circuit current is limited by S65, current limliting loop.
The control method of the current-limiting apparatus that this utility model embodiment provides, it is first determined the most short-circuit and direction of short circuit current, when the direction confirming short circuit and short circuit current is forward, exports negative current；When short circuit current direction is negative sense, export forward current；Control fast vacuum to switch off simultaneously；Under reverse current effect, quickly there is zero crossing in short circuit current, and short circuit current is transferred in current limliting loop, thus realize current limliting, again because electric current is by high-speed switch module when transmission line of electricity normally works, so transmission line of electricity normal work timing stream device is lossless.
Further below the operation principle of the control method of lossless current-limiting apparatus shown in current-limiting apparatus shown in Fig. 3,4,5 and Fig. 6 is illustrated.
When normally working, vacuum switch 140 turns on, and electric current flows through through vacuum switch loop, and the first electric capacity C1 and the second electric capacity C2 is electrically charged simultaneously.
When there is short circuit, first detection module 11 detects Short-circuit Working Condition and obtains the direction of short circuit current, and sending control signal according to the sense of current.When the direction of short circuit current is forward, the first switch element T1 conducting in the first reverse current module 12, produce the electric current contrary with the sense of current of short circuit current, i.e. produce negative current.The negative current that first reverse current module 12 produces and the short circuit current effect of forward, promote vacuum switch zero-crossing switching.In like manner, when the electric current of short circuit current is negative sense, the forward current that the second reverse current module 13 produces and the short circuit current effect of negative sense, promote vacuum switch zero-crossing switching.Finally, after fast vacuum switch blow-out, short circuit current transfers to realize in current-limiting inductance the restriction of short circuit current.
The above; it is only detailed description of the invention of the present utility model; but protection domain of the present utility model is not limited thereto; any those familiar with the art is in the technical scope that this utility model discloses; change can be readily occurred in or replace, all should contain within protection domain of the present utility model.Therefore, protection domain of the present utility model should be as the criterion with scope of the claims.
Claims (8)
1. a lossless current-limiting apparatus, it is characterised in that for short circuit current being limited when short circuit occurs in transmission line of electricity；Described device includes: detection module, the first reverse current module, the second reverse current module, high-speed switch module and current-limiting inductance mould are fast；
Described detection module is for determining transmission line of electricity whether short circuit and the direction of short circuit current；When the direction confirming short-circuit and described short circuit current is forward, sends control signal at the first control signal terminal, when the direction of the short-circuit and described short circuit current of described transmission line of electricity is negative sense, send control signal at the second control signal terminal；
Described first reverse current module connects described first control signal terminal and described transmission line of electricity head end and end, for exporting negative current under the control of described first control signal terminal, and forms zero crossing with short circuit current effect；
Described second reverse current module connects described second control signal terminal and the head end of described transmission line of electricity and end, for exporting forward current under the control of described second control signal terminal, and forms zero crossing with short circuit current effect；
Described high-speed switch module connects described first control signal terminal, described second control signal terminal and the head end of described transmission line of electricity and end, for disconnecting switch fracture under the control of described first control signal terminal or described second control signal terminal；
Described current-limiting inductance module, after disconnecting switch fracture in described high-speed switch module, is accepted the short circuit current shifting and limits described short circuit current.
Device the most according to claim 1, it is characterised in that described first reverse current module includes: the first electric capacity, the first inductance and the first switch element；
The input of described first switch element connects the head end of described transmission line of electricity, and the outfan of described first switch element connects the head end of described first inductance；The control end of described first switch element connects described first control signal terminal；
The end of described first inductance connects the first pole of described first electric capacity；
Second pole of described first electric capacity connects the end of described transmission line of electricity.
Device the most according to claim 2, it is characterised in that described first switch element is IGCT or Triggered Vacuum Switch.
Device the most according to claim 1, it is characterised in that described second reverse current module includes: the second electric capacity, the second inductance and second switch unit；
The input of described second switch unit connects the end of described transmission line of electricity, and the outfan of described second switch unit connects the end of described second inductance；The control end of described second switch unit connects described second control signal terminal；
The head end of described second inductance connects the second pole of described second electric capacity；
First pole of described second electric capacity connects the head end of described transmission line of electricity.
Device the most according to claim 4, it is characterised in that described second switch unit is IGCT or Triggered Vacuum Switch.
Device the most according to claim 1, it is characterised in that described high-speed switch module includes: fast vacuum switch and controlling organization thereof；
The input of described vacuum switch connects the head end of transmission line of electricity, and the outfan of described vacuum switch connects the end of transmission line of electricity；
The controlling organization of described vacuum switch connects described first control signal terminal and described second control signal terminal.
Device the most according to claim 1, it is characterised in that described current-limiting inductance module includes: the 3rd inductance；
The head end of described 3rd inductance connects the head end of described transmission line of electricity, and the end of described 3rd inductance connects the end of described transmission line of electricity.
Device the most according to claim 1, it is characterised in that described detection module includes: sampling unit, judging unit and transmitting element；
Described sampling unit is for sampling to the electric current in described transmission line of electricity；
According to the electric current in described transmission line of electricity, described judging unit is for judging that described transmission line of electricity is the most short-circuit and judging the direction of short circuit current when described transmission line of electricity short circuit；
Described transmitting element is for exporting described control signal when the direction of the short-circuit and described short circuit current of described transmission line of electricity is forward at described first control signal terminal；
Described transmitting element is additionally operable to when the direction of the short-circuit and described short circuit current of described transmission line of electricity is negative sense export described control signal at described second control signal terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620148796.XU CN205489499U (en) | 2016-02-26 | 2016-02-26 | Harmless current limiting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620148796.XU CN205489499U (en) | 2016-02-26 | 2016-02-26 | Harmless current limiting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205489499U true CN205489499U (en) | 2016-08-17 |
Family
ID=56678642
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620148796.XU Active CN205489499U (en) | 2016-02-26 | 2016-02-26 | Harmless current limiting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205489499U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113285433A (en) * | 2021-01-27 | 2021-08-20 | 安徽一天电气技术股份有限公司 | Short circuit current peak-limiting current-limiting system |
-
2016
- 2016-02-26 CN CN201620148796.XU patent/CN205489499U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113285433A (en) * | 2021-01-27 | 2021-08-20 | 安徽一天电气技术股份有限公司 | Short circuit current peak-limiting current-limiting system |
| CN113285433B (en) * | 2021-01-27 | 2022-01-04 | 安徽一天电气技术股份有限公司 | Short circuit current peak-limiting current-limiting system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110460014B (en) | Bidirectional hybrid direct current breaker based on capacitor pre-charging transfer and switching-on/off method | |
| EP3745440B1 (en) | Oscillating dc circuit breaker based on vacuum interupter with magnetic blow integrated and breaking method thereof | |
| CN103219698B (en) | Mixing type direct-current breaker | |
| EP3343715B1 (en) | Short-circuit failure current limiter | |
| CN103296636B (en) | A kind of HVDC gas-break switch based on self-maintained circuit | |
| CN103001614B (en) | Mixing type breaker with selective protection function | |
| WO2015024509A1 (en) | High-voltage large-current direct-current circuit breaker and control method therefor | |
| WO2023001182A1 (en) | Direct-current circuit breaker and application method therefor | |
| CN103646805B (en) | A kind of direct-current breaker topology | |
| CN113013832B (en) | Hybrid direct current breaker based on passive coupling oscillation and control method thereof | |
| EP3582241A1 (en) | High-voltage large-current zero-equivalent phase switch, and control method thereof | |
| CN103337852B (en) | A kind of direct current network breaking device | |
| CN113299505B (en) | Mixed current-limiting on-off direct current breaker | |
| CN104113057A (en) | Combined type direct current switch equipment and control method thereof | |
| CN111224372A (en) | Hybrid direct-current circuit breaker with rapid reclosing function and switching-on/off method thereof | |
| CN205489499U (en) | Harmless current limiting device | |
| RU2597998C2 (en) | Switch for transmission path for high-voltage direct current | |
| CN210297244U (en) | Fast DC switch | |
| CN205489519U (en) | High -power direct current breaker of high voltage | |
| CN109361202B (en) | Current injection type circuit breaker | |
| CN110311354A (en) | Large capacity mixed DC breaker and current limliting method for dividing are pressed in one kind | |
| CN103618281A (en) | Hybrid type bidirectional full-load direct current cut-off device and cut-off method based on manual zero passage technology | |
| CN110086152A (en) | A kind of fast-speed direct current switch and its control method | |
| CN204761002U (en) | Modularization power electronic high voltage direct current circuit breaker | |
| CN110311353A (en) | A kind of current-limiting type mixed DC breaker and current limliting method for dividing |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210607 Address after: 510700 3rd, 4th and 5th floors of building J1 and 3rd floor of building J3, No.11 Kexiang Road, Science City, Luogang District, Guangzhou City, Guangdong Province Patentee after: China Southern Power Grid Research Institute Co.,Ltd. Address before: Room 505-508, 4th and 5th floor, No.6 Huasui Road, Zhujiang New Town, Tianhe District, Guangzhou, Guangdong 510623 Patentee before: CSG POWER GRID TECHNOLOGY RESEARCH CENTER Patentee before: China Southern Power Grid Research Institute Co.,Ltd. |
|
| TR01 | Transfer of patent right |