CN203674683U - Vacuum breaker - Google Patents
Vacuum breaker Download PDFInfo
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- CN203674683U CN203674683U CN201320865432.XU CN201320865432U CN203674683U CN 203674683 U CN203674683 U CN 203674683U CN 201320865432 U CN201320865432 U CN 201320865432U CN 203674683 U CN203674683 U CN 203674683U
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- 238000004088 simulation Methods 0.000 claims description 20
- 230000001939 inductive effect Effects 0.000 claims description 13
- 238000001914 filtration Methods 0.000 claims description 6
- 238000001514 detection method Methods 0.000 abstract description 9
- 230000006698 induction Effects 0.000 abstract 3
- 238000011002 quantification Methods 0.000 abstract 1
- 230000005540 biological transmission Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- 230000015556 catabolic process Effects 0.000 description 3
- 230000032683 aging Effects 0.000 description 2
- 230000001934 delay Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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Abstract
The utility model discloses a vacuum breaker. The vacuum breaker comprises a current collector used for receiving the three-phase output current and the zero sequence current of a 10KV electric network structure and sequentially carrying out logic quantification on the three-phase output current and the zero sequence current to acquire the three-phase analog quantity and the zero sequence analog quantity, a protection controller which is connected with the current collector and is used for receiving and respectively detecting the three-phase analog quantity and the zero sequence analog quantity to acquire detection results, a performer which is connected with an inlet and the protection controller and is used for receiving the detection results and controlling on or off of the inlet according to the detection results, and a current induction power source which is respectively connected with the current collector, the protection controller and the performer and is used for acquiring the induction current of a current transformer in the current collector and providing power for the protection controller and the performer according to the induction current.
Description
Technical field
The application relates to power industry technical field, particularly a kind of vacuum circuit-breaker.
Background technology
In urban and rural power grids; conventionally adopt the detection protective device of vacuum circuit-breaker as the demarcation switch sluice gate between 10KV outdoor aerial circuit and user; play protection user overcurrent, the protection of shoving, avoid affecting whole electrical network and normally working because of load three-phase imbalance and custom power equipment and distribution line failure of user power utilization.
But in existing vacuum circuit-breaker, need by external power supply, it to be powered, make to occur in switching circuit high tension voltage, have the possibility of high-voltage breakdown, reduce the reliability of vacuum circuit-breaker.
Utility model content
The application's technical problem to be solved is to provide a kind of vacuum circuit-breaker, need to power to it by external power supply in order to solve vacuum circuit-breaker of the prior art, make to occur in switching circuit high tension voltage, reduce the technical problem of the reliability of vacuum circuit-breaker.
The application provides a kind of vacuum circuit-breaker, comprising:
Be connected with 10KV electric network composition, receive three-phase output current and the zero-sequence current of described 10KV electric network composition, described three-phase output current and described zero-sequence current are carried out successively to logic and quantize to obtain the current collector of three-phase simulation amount and zero sequence analog quantity;
Be connected with described current collector, receive described three-phase simulation amount and described zero sequence analog quantity, respectively described three-phase simulation amount and described zero sequence analog quantity are detected, obtain the protection controller of testing result;
Be connected with sluice gate and described protection controller respectively, receive described testing result, according to the actuator of sluice gate break-make described in described testing result control, described sluice gate is connected with described 10KV electric network composition and user power utilization equipment respectively;
Be connected with described current collector, described protection controller and described actuator respectively; obtain the induced current on current transformer in described current collector, the current-inducing power supply according to described induced current to described protection controller and the power supply of described actuator.
Above-mentioned vacuum circuit-breaker, preferred, described current collector comprises:
Current acquisition trigger;
The current acquisition delay switch being connected with described current acquisition trigger.
Above-mentioned vacuum circuit-breaker, preferred, described current-inducing power supply comprises:
Obtain the induced current on current transformer in described current collector, the rectifier that described induced current is carried out to rectification operation;
Be connected with described rectifier, by the tuning device of operation of adjusting through the induced current of over commutation;
Be connected with described tuning device, will carry out the filter of filtering operation through the induced current of adjusting;
Be connected with described filter, the accumulator that induced current is after filtering stored;
Be connected with described accumulator, obtain the stored voltage in described accumulator, the charger by described storage voltage to described protection controller and the power supply of described actuator.
Above-mentioned vacuum circuit-breaker, preferred, described protection controller comprises:
Receive described three-phase simulation amount, generate the balance determinant of balanced signal according to described three-phase simulation amount;
Be connected with described balance determinant, judge that whether the level of described balanced signal is higher than default signal level corresponding to the first electric current, if, generate the testing result that described three-phase output current is greater than described the first electric current, otherwise, judge that whether the level of described balanced signal is higher than signal level corresponding to default the second electric current and lower than signal level corresponding to the first electric current, if the level of described balanced signal is higher than signal level corresponding to described the second electric current and lower than signal level corresponding to the first electric current, generate the testing result that described three-phase output current is greater than described the second electric current, otherwise, generate the balance controller that described three-phase output current is less than the testing result of described the second electric current,
Judge that whether the level of described zero sequence analog quantity is higher than default signal level corresponding to the 3rd electric current, if, generate the testing result that described zero-sequence current is greater than described the 3rd electric current, otherwise, judge that whether the level of described zero sequence analog quantity is higher than signal level corresponding to default the 4th electric current and lower than signal level corresponding to the 3rd electric current, if the level of described zero sequence analog quantity is higher than signal level corresponding to described the 4th electric current and lower than signal level corresponding to the 3rd electric current, generate the testing result that described zero-sequence current is greater than described the 4th electric current, otherwise, generate the zero sequence controller that described zero-sequence current is less than the testing result of described the 4th electric current.
Above-mentioned vacuum circuit-breaker, preferred, described actuator comprises:
Receive described testing result, judge the character of described testing result, when showing described three-phase output current, described testing result is greater than described the first electric current, trigger break-make performance element, when showing described three-phase output current, described testing result is greater than described the second electric current, trigger break-make performance element, when showing described zero-sequence current, described testing result is greater than described the 3rd electric current, trigger break-make performance element, be greater than described the 4th electric current when described testing result shows described zero-sequence current, trigger the result judging unit of break-make performance element;
Be connected with described sluice gate and described result judging unit respectively, control the break-make performance element that described sluice gate disconnects.
Above-mentioned vacuum circuit-breaker, preferred, described break-make performance element comprises:
Time delay Preset Time is long, triggers the delayer of break-make actuator;
Be connected with described delayer, control the break-make actuator that described sluice gate disconnects.
Above-mentioned vacuum circuit-breaker, preferred, described balance determinant comprises and door.
Above-mentioned vacuum circuit-breaker, preferred, also comprise:
Be connected with described current collector, the first transmitter that described three-phase output current and described zero-sequence current are transmitted.
Above-mentioned vacuum circuit-breaker, preferred, also comprise:
Be connected with described protection controller, the second transmitter that the value of described the first electric current, described the second electric current, described the 3rd electric current and described the 4th electric current is transmitted.
Above-mentioned vacuum circuit-breaker, preferred, also comprise:
Be connected with described actuator, obtain the executable operations information of described actuator, the 3rd transmitter that described executable operations information is transmitted.
From such scheme, a kind of vacuum circuit-breaker that the application provides, by being set, current-inducing power supply (being CT way to take power) is connected with current collector, thereby obtain the induced current on current transformer in current collector by current-inducing power supply, according to this this induced current, protection controller and actuator are powered, three-phase simulation amount and zero sequence analog quantity that protection controller received current collector obtains are detected, obtain testing result, and then by actuator according to this testing result control connection in the sluice gate break-make of 10KV electric network composition and user power utilization equipment room, and then there is the faults such as ageing equipment or user power utilization load three-phase is unbalanced in 10KV electric network composition time, the safety of protection user power utilization equipment, reduce the loss that fault is brought user.The application replaces prior art mesohigh voltage transmission mode by CT power taking pattern, has reduced the possibility of high-voltage breakdown, improves the reliability of vacuum circuit-breaker.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the embodiment of the present application, below the accompanying drawing of required use during embodiment is described is briefly described, apparently, accompanying drawing in the following describes is only some embodiment of the application, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
The structural representation of a kind of vacuum circuit-breaker that Fig. 1 provides for the application;
Fig. 2 is the part-structure schematic diagram of the embodiment of the present application one;
The part-structure schematic diagram of a kind of vacuum circuit-breaker embodiment bis-that Fig. 3 provides for the application;
The part-structure schematic diagram of a kind of vacuum circuit-breaker embodiment tri-that Fig. 4 provides for the application;
The part-structure schematic diagram of a kind of vacuum circuit-breaker embodiment tetra-that Fig. 5 provides for the application;
Fig. 6 is another part structural representation of the embodiment of the present application four;
The structural representation of a kind of vacuum circuit-breaker embodiment five that Fig. 7 provides for the application;
The structural representation of a kind of vacuum circuit-breaker embodiment six that Fig. 8 provides for the application;
The structural representation of a kind of vacuum circuit-breaker embodiment seven that Fig. 9 provides for the application;
The logic diagram of a kind of vacuum circuit-breaker embodiment eight that Figure 10 provides for the application.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present application, the technical scheme in the embodiment of the present application is clearly and completely described, obviously, described embodiment is only the application's part embodiment, rather than whole embodiment.Based on the embodiment in the application, those of ordinary skills are not making the every other embodiment obtaining under creative work prerequisite, all belong to the scope of the application's protection.
With reference to figure 1, the structural representation of a kind of vacuum circuit-breaker providing for the application, wherein said vacuum circuit-breaker can comprise:
Be connected with 10KV electric network composition, receive three-phase output current and the zero-sequence current of described 10KV electric network composition, described three-phase output current and described zero-sequence current are carried out successively to logic and quantize to obtain the current collector 101 of three-phase simulation amount and zero sequence analog quantity.
Wherein, described current collector 101 can be by structure realization as shown in Figure 2, and described current collector 101 can comprise:
Current acquisition trigger 111, and the current acquisition delay switch 112 being connected with described current acquisition trigger 111.
It should be noted that, described current acquisition trigger 111 can be realized by Schmidt trigger, gather three-phase output current and the zero-sequence current of described 10KV electric network composition, in the time that application the application carries out three-phase output current and zero-sequence current detection, realize combined floodgate surge time delay (four sections of delay times are optional) by described current acquisition trigger 111 and described current acquisition delay switch 112, obtain the each self-corresponding three-phase simulation amount of three-phase output current and zero-sequence current and zero sequence analog quantity.Wherein, described current collector 101 can be realized with four output ports the output of output three-phase simulation amount and zero sequence analog quantity.
Be connected with described current collector 101, receive described three-phase simulation amount and described zero sequence analog quantity, respectively described three-phase simulation amount and described zero sequence analog quantity are detected, obtain the protection controller 102 of testing result.
Wherein, described protection controller 102 is by the three-phase that described current collector 101 is exported, and analog quantity and zero sequence analog quantity detect, and realizes described 10KV electric network composition is exported to the three-phase output current of user power utilization equipment and the detection of zero-sequence current.
Be connected with sluice gate and described protection controller 102 respectively, receive described testing result, according to the actuator 103 of sluice gate break-make described in described testing result control, described sluice gate is connected with described 10KV electric network composition and user power utilization equipment respectively.
Wherein, after described protection controller 102 obtains testing result; by actuator 103 according to this testing result control sluice gate break-make; be: in the time that described testing result shows that described three-phase output current shows that unbalanced (described three-phase current is greater than preset value) of three-phase or described zero-sequence current are greater than preset value; described actuator 103 disconnects sluice gate; realize and disconnect being connected between described 10KV electric network composition and user power utilization equipment, protection user power utilization equipment.
Be connected with described current collector 101, described protection controller 102 and described actuator 103 respectively; obtain the induced current on current transformer in described current collector 101, the current-inducing power supply 104 of described protection controller 102 and described actuator 103 being powered according to described induced current.
Wherein, described current-inducing power supply 104 can be realized by CT electricity getting device.
From such scheme, a kind of vacuum circuit-breaker embodiment mono-that the application provides, by being set, current-inducing power supply (being CT way to take power) is connected with current collector, thereby obtain the induced current on current transformer in current collector by current-inducing power supply, according to this this induced current, protection controller and actuator are powered, three-phase simulation amount and zero sequence analog quantity that protection controller received current collector obtains are detected, obtain testing result, and then by actuator according to this testing result control connection in the sluice gate break-make of 10KV electric network composition and user power utilization equipment room, and then there is the faults such as ageing equipment or user power utilization load three-phase is unbalanced in 10KV electric network composition time, the safety of protection user power utilization equipment, reduce the loss that fault is brought user.The embodiment of the present application replaces prior art high voltage appearance transmission mode by CT power taking pattern, has reduced the possibility of high-voltage breakdown, improves the reliability of vacuum circuit-breaker.
Meanwhile, the each parts in the embodiment of the present application one can be integrated in a MCU control unit and realize, and the installation of constructability personnel to the embodiment of the present application thus reduces workload, increases work efficiency.
The embodiment of the present application, in the time of actual realization, can need the assembly that user operates to be set to multiple little group of keys realizations in vacuum circuit-breaker, adopts syllogic protected mode, and protection arranges flexible, is convenient to user's operation, raising reliability.
With reference to figure 3, the structural representation of current-inducing power supply 104 described in a kind of vacuum circuit-breaker embodiment bis-providing for the application, wherein, described current-inducing power supply 104 can comprise:
Obtain the induced current on current transformer in described current collector 101, the rectifier 141 that described induced current is carried out to rectification operation.
Be connected with described rectifier 141, by the tuning device 142 of operation of adjusting through the induced current of over commutation.
Be connected with described tuning device 142, will carry out the filter 143 of filtering operation through the induced current of adjusting.
Be connected with described filter 143, the accumulator 144 that induced current is after filtering stored.
Be connected with described accumulator 144, obtain the stored voltage in described accumulator 144, the charger 145 that described storage voltage is powered to described protection controller 102 and described actuator 103.
From the implementation structure of above-mentioned current-inducing power supply 104, in the embodiment of the present application without electric weight energy storage devices such as batteries or higher than power supply etc., mustn't care and maintenance, improve reliability and the operation ease of the embodiment of the present application.
With reference to figure 4, the structural representation of protection controller 102 described in a kind of vacuum circuit-breaker embodiment tri-providing for the application, wherein, described protection controller 102 can comprise:
Receive described three-phase simulation amount, generate the balance determinant 121 of balanced signal according to described three-phase simulation amount.
Wherein, described balance determinant 121 can be by realizing with door, by three-phase simulation amount as there are three input ports with door input, using this with the output signal of door as balanced signal.
Be connected with described balance determinant 121, judge that whether the level of described balanced signal is higher than default signal level corresponding to the first electric current, if, generate the testing result that described three-phase output current is greater than described the first electric current, otherwise, judge that whether the level of described balanced signal is higher than signal level corresponding to default the second electric current and lower than signal level corresponding to the first electric current, if the level of described balanced signal is higher than signal level corresponding to described the second electric current and lower than signal level corresponding to the first electric current, generate the testing result that described three-phase output current is greater than described the second electric current, otherwise, generate the balance controller 122 that described three-phase output current is less than the testing result of described the second electric current,
Judge that whether the level of described zero sequence analog quantity is higher than default signal level corresponding to the 3rd electric current, if, generate the testing result that described zero-sequence current is greater than described the 3rd electric current, otherwise, judge that whether the level of described zero sequence analog quantity is higher than signal level corresponding to default the 4th electric current and lower than signal level corresponding to the 3rd electric current, if the level of described zero sequence analog quantity is higher than signal level corresponding to described the 4th electric current and lower than signal level corresponding to the 3rd electric current, generate the testing result that described zero-sequence current is greater than described the 4th electric current, otherwise, generate the zero sequence controller 123 that described zero-sequence current is less than the testing result of described the 4th electric current.
Wherein, described the first electric current can be set to default quick-break current value I
>>, described the second electric current can be set to default overcurrent value I
>, as 5A etc.That is to say, in such scheme, described balance controller 122 judges that whether the level of described balanced signal is higher than quick-break current value I
>>corresponding signal level, if so, generates described three-phase output current and is greater than described quick-break current value I
>>testing result, otherwise, judge that whether the level of described balanced signal is higher than overcurrent value I
>corresponding signal level and lower than quick-break current value I
>>corresponding signal level, if the level of described balanced signal is higher than described overcurrent value I
>corresponding signal level and lower than quick-break current value I
>>corresponding signal level, generates described three-phase output current and is greater than described overcurrent value I
>testing result, otherwise, generate described three-phase output current and be less than described overcurrent value I
>testing result, realize detection to three-phase output current.
Wherein, described the 3rd electric current can be set to the zero-sequence current Ie that adjusts of preset multiple
>>, described the 4th electric current can be set to zero sequence overcurrent Ie
>, as 2.5A(rated current 0.3～0.5A) etc.That is to say, in such scheme, described zero sequence controller 123 judges that whether the level of described zero sequence analog quantity is higher than the default zero-sequence current Ie that adjusts
>>corresponding signal level, if so, generates the described zero-sequence current zero-sequence current Ie that adjusts described in being greater than
>>testing result, otherwise, judge that whether the level of described zero sequence analog quantity is higher than default zero sequence overcurrent Ie
>corresponding signal level and lower than the zero-sequence current Ie that adjusts
>>corresponding signal level, if the level of described zero sequence analog quantity is higher than described zero sequence overcurrent Ie
>corresponding signal level and lower than the zero-sequence current Ie that adjusts
>>corresponding signal level, generates described zero-sequence current and is greater than described zero sequence overcurrent Ie
>testing result, otherwise, generate described zero-sequence current and be less than described zero sequence overcurrent Ie
>testing result.
It should be noted that, above-mentioned multiple refers to the multiple of rheology rated current.Wherein, described quick-break current value I
>>and described in the zero-sequence current value Ie that adjusts
>>for four sections of described multiple optional.
With reference to figure 5, the structural representation of actuator 103 described in a kind of vacuum circuit-breaker embodiment tetra-providing for the application, wherein, described actuator 103 can comprise:
Receive described testing result, judge the character of described testing result, when showing described three-phase output current, described testing result is greater than described the first electric current, trigger break-make performance element 132, when showing described three-phase output current, described testing result is greater than described the second electric current, trigger break-make performance element 132, when showing described zero-sequence current, described testing result is greater than described the 3rd electric current, trigger break-make performance element 132, be greater than described the 4th electric current when described testing result shows described zero-sequence current, trigger the result judging unit 131 of break-make performance element 132;
Be connected with described sluice gate and described result judging unit 131 respectively, control the break-make performance element 132 that described sluice gate disconnects.
Such scheme can be understood as, described actuator 103 is after its result judging unit 131 receives described testing result, judge the character of this testing result, when showing described three-phase output current, this testing result is greater than described the first electric current, described three-phase output current is greater than described the second electric current, when described zero-sequence current is greater than described the 3rd electric current or described zero-sequence current and is greater than described the 4th electric current, all can control this sluice gate by described break-make performance element 132 disconnects, realize and occur overcurrent at 10KV electric network composition, when quick-break or zero-sequence fault, sub-switching operation, user power utilization equipment is carried out to safeguard protection.
Wherein, described break-make performance element 132 can be realized by time delay break-make mode, is with reference to figure 6, is the structural representation of break-make performance element 132 described in the embodiment of the present application four, and wherein, described break-make performance element 132 can comprise:
Time delay Preset Time is long, triggers the delayer 1321 of break-make actuator 1322;
Be connected with described delayer 1321, control the break-make actuator 1322 that described sluice gate disconnects.
That is to say, described break-make performance element 132 is controlled described sluice gate and is disconnected after Preset Time described in time delay is long.
Wherein, the long T-I of described Preset Time
>>/ T-Ie
>>for four of times optional, I
>/ Ie
>16 grades of electric current time delays are optional.
In addition, with reference to figure 7, the structural representation of a kind of vacuum circuit-breaker embodiment five providing for the application, wherein, described device can also comprise:
Be connected with described current collector 101, the first transmitter 105 that described three-phase output current and described zero-sequence current are transmitted.
Wherein, described the first transmitter 105 can be transferred to user terminal with the form of short message by described three-phase output current and described zero-sequence current, in mobile phone or computer, to point out user to work as three-phase output current value and described zero-sequence current value.Described the first transmitter 105 can be realized by GSM interface transmission means.
With reference to figure 8, the structural representation of a kind of vacuum circuit-breaker embodiment six providing for the application, wherein, described device can also comprise:
Be connected with described protection controller 102, the second transmitter 106 that the value of described the first electric current, described the second electric current, described the 3rd electric current and described the 4th electric current is transmitted.
Wherein, described the second transmitter 106 can be transferred to user terminal with the form of short message by the value of described the first electric current, described the second electric current, described the 3rd electric current and described the 4th electric current, in mobile phone or computer, with the value of current the first electric current of prompting user, described the second electric current, described the 3rd electric current and described the 4th electric current, and then facilitate user that each current value is further set.Described the second transmitter 106 can be realized by GSM interface transmission means.
With reference to figure 9, the structural representation of a kind of vacuum circuit-breaker embodiment seven providing for the application, wherein, described device can also comprise:
Be connected with described actuator 103, obtain the executable operations information of described actuator 103, the 3rd transmitter 107 that described executable operations information is transmitted.
Wherein, described the 3rd transmitter 107 can be transferred to user terminal with the form of short message by described executable operations information, in mobile phone or computer, with the current executable operations information of prompting user, and then facilitate user that described 10KV electric network composition and user power utilization equipment are keeped in repair or adjusted, it can normally be moved.Described the 3rd transmitter 107 can be realized by GSM interface transmission means.
In above-mentioned rear three embodiment, described the first transmitter 105, described the second transmitter 106 and described the 3rd transmitter 107 can be integrated in same data transmission device and realize.
With reference to Figure 10, the logic diagram of a kind of vacuum circuit-breaker embodiment eight providing for the application, wherein, described vacuum circuit-breaker embodiment eight realizes the time delay of combined floodgate surge by Schmidt trigger and a delay switch, obtain four tunnel analog quantitys: first-phase current analog amount Ia, second-phase current analog amount Ib, Section 3 current analog amount Ic and zero-sequence current analog quantity Io, by realizing three-phase current analog quantity Ia with door, (the application can be by arranging for subsequent use and door for the obtaining of the balanced signal of Ib and Ic, improve the reliability of the embodiment of the present application), realize balanced signal or zero sequence analog quantity are judged by another a series of Schmidt trigger, , first judge in balanced signal and whether show that described three-phase output current exceedes I
>>, if so, by time-delay relay T-I
>>realize the sub-switching operation to sluice gate, otherwise, then judge in balanced signal whether show that described three-phase output current exceedes I
>, if so, by time-delay relay T-I
>realize the sub-switching operation to sluice gate.
Meanwhile, first the application, by realizing the judgement to zero sequence analog quantity with Schmidt trigger, judges in zero sequence analog quantity whether show that described zero-sequence current exceedes Ie
>>, if so, by time-delay relay T-Ie
>>realize the sub-switching operation to sluice gate, otherwise, then judge in zero sequence analog quantity whether show that described zero-sequence current exceedes Ie
>, if so, by time-delay relay T-Ie
>realize the sub-switching operation to sluice gate.
In addition, the application does not exceed I judging described three-phase output current
>and described zero-sequence current does not exceed Ie
>time, can return the obtaining and detecting of analog quantity, continue three-phase output current and zero-sequence current to obtain detection.
It should be noted that; embodiment in the application is applicable to domestic and international various 10KV electric network composition; as exist central point in the 10KV electric network composition of small resistance grounding system, central point isolated neutral system and/or compensated distribution network etc.; and between each system there is relatively large deviation in the size of zero-sequence current and data; the embodiment of the present application is suitable for equally to safety detection and sub-switching operation between this electric network composition and user power utilization equipment; with protection user power utilization equipment; improve grid supply quality, reduce grid loss.
It should be noted that, each embodiment in this specification all adopts the mode of going forward one by one to describe, and what each embodiment stressed is and the difference of other embodiment, between each embodiment identical similar part mutually referring to.
Finally, also it should be noted that, in this article, relational terms such as the first and second grades is only used for an entity or operation to separate with another entity or operating space, and not necessarily requires or imply and between these entities or operation, have the relation of any this reality or sequentially.And, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thereby make to comprise that the article of a series of key elements or equipment not only comprise those key elements, but also comprise other key elements of clearly not listing, or be also included as this article or the intrinsic key element of equipment.The in the situation that of more restrictions not, the key element being limited by statement " comprising ... ", and be not precluded within and comprise in the article of described key element or equipment and also have other identical element.
A kind of vacuum circuit-breaker above the application being provided is described in detail, applied principle and the execution mode of specific case to the application herein and set forth, the explanation of above embodiment is just for helping to understand the application's method and core concept thereof; , for one of ordinary skill in the art, according to the application's thought, all will change in specific embodiments and applications, in sum, this description should not be construed as the restriction to the application meanwhile.
Claims (10)
1. a vacuum circuit-breaker, is characterized in that, comprising:
Be connected with 10KV electric network composition, receive three-phase output current and the zero-sequence current of described 10KV electric network composition, described three-phase output current and described zero-sequence current are carried out successively to logic and quantize to obtain the current collector of three-phase simulation amount and zero sequence analog quantity;
Be connected with described current collector, receive described three-phase simulation amount and described zero sequence analog quantity, respectively described three-phase simulation amount and described zero sequence analog quantity are detected, obtain the protection controller of testing result;
Be connected with sluice gate and described protection controller respectively, receive described testing result, according to the actuator of sluice gate break-make described in described testing result control, described sluice gate is connected with described 10KV electric network composition and user power utilization equipment respectively;
Be connected with described current collector, described protection controller and described actuator respectively; obtain the induced current on current transformer in described current collector, the current-inducing power supply according to described induced current to described protection controller and the power supply of described actuator.
2. vacuum circuit-breaker according to claim 1, is characterized in that, described current collector comprises:
Current acquisition trigger;
The current acquisition delay switch being connected with described current acquisition trigger.
3. vacuum circuit-breaker according to claim 1, is characterized in that, described current-inducing power supply comprises:
Obtain the induced current on current transformer in described current collector, the rectifier that described induced current is carried out to rectification operation;
Be connected with described rectifier, by the tuning device of operation of adjusting through the induced current of over commutation;
Be connected with described tuning device, will carry out the filter of filtering operation through the induced current of adjusting;
Be connected with described filter, the accumulator that induced current is after filtering stored;
Be connected with described accumulator, obtain the stored voltage in described accumulator, the charger by described storage voltage to described protection controller and the power supply of described actuator.
4. vacuum circuit-breaker according to claim 1, is characterized in that, described protection controller comprises:
Receive described three-phase simulation amount, generate the balance determinant of balanced signal according to described three-phase simulation amount;
Be connected with described balance determinant, judge that whether the level of described balanced signal is higher than default signal level corresponding to the first electric current, if, generate the testing result that described three-phase output current is greater than described the first electric current, otherwise, judge that whether the level of described balanced signal is higher than signal level corresponding to default the second electric current and lower than signal level corresponding to the first electric current, if the level of described balanced signal is higher than signal level corresponding to described the second electric current and lower than signal level corresponding to the first electric current, generate the testing result that described three-phase output current is greater than described the second electric current, otherwise, generate the balance controller that described three-phase output current is less than the testing result of described the second electric current,
Judge that whether the level of described zero sequence analog quantity is higher than default signal level corresponding to the 3rd electric current, if, generate the testing result that described zero-sequence current is greater than described the 3rd electric current, otherwise, judge that whether the level of described zero sequence analog quantity is higher than signal level corresponding to default the 4th electric current and lower than signal level corresponding to the 3rd electric current, if the level of described zero sequence analog quantity is higher than signal level corresponding to described the 4th electric current and lower than signal level corresponding to the 3rd electric current, generate the testing result that described zero-sequence current is greater than described the 4th electric current, otherwise, generate the zero sequence controller that described zero-sequence current is less than the testing result of described the 4th electric current.
5. according to the vacuum circuit-breaker described in claim 1,2 or 4, it is characterized in that, described actuator comprises:
Receive described testing result, judge the character of described testing result, when showing described three-phase output current, described testing result is greater than described the first electric current, trigger break-make performance element, when showing described three-phase output current, described testing result is greater than described the second electric current, trigger break-make performance element, when showing described zero-sequence current, described testing result is greater than described the 3rd electric current, trigger break-make performance element, be greater than described the 4th electric current when described testing result shows described zero-sequence current, trigger the result judging unit of break-make performance element;
Be connected with described sluice gate and described result judging unit respectively, control the break-make performance element that described sluice gate disconnects.
6. vacuum circuit-breaker according to claim 5, is characterized in that, described break-make performance element comprises:
Time delay Preset Time is long, triggers the delayer of break-make actuator;
Be connected with described delayer, control the break-make actuator that described sluice gate disconnects.
7. vacuum circuit-breaker according to claim 4, is characterized in that, described balance determinant comprises and door.
8. according to the vacuum circuit-breaker described in claim 1 or 4, it is characterized in that, also comprise:
Be connected with described current collector, the first transmitter that described three-phase output current and described zero-sequence current are transmitted.
9. vacuum circuit-breaker according to claim 8, is characterized in that, also comprises:
Be connected with described protection controller, the second transmitter that the value of described the first electric current, described the second electric current, described the 3rd electric current and described the 4th electric current is transmitted.
10. vacuum circuit-breaker according to claim 8, is characterized in that, also comprises:
Be connected with described actuator, obtain the executable operations information of described actuator, the 3rd transmitter that described executable operations information is transmitted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320865432.XU CN203674683U (en) | 2013-12-25 | 2013-12-25 | Vacuum breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320865432.XU CN203674683U (en) | 2013-12-25 | 2013-12-25 | Vacuum breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203674683U true CN203674683U (en) | 2014-06-25 |
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ID=50970938
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320865432.XU Expired - Lifetime CN203674683U (en) | 2013-12-25 | 2013-12-25 | Vacuum breaker |
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| Country | Link |
|---|---|
| CN (1) | CN203674683U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103633612A (en) * | 2013-12-25 | 2014-03-12 | 国家电网公司 | Vacuum circuit breaker |
-
2013
- 2013-12-25 CN CN201320865432.XU patent/CN203674683U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103633612A (en) * | 2013-12-25 | 2014-03-12 | 国家电网公司 | Vacuum circuit breaker |
| CN103633612B (en) * | 2013-12-25 | 2017-01-18 | 国家电网公司 | Vacuum circuit breaker |
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