CN202839441U - Intelligent branch division vacuum circuit breaker controller - Google Patents
Intelligent branch division vacuum circuit breaker controller Download PDFInfo
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- CN202839441U CN202839441U CN 201220456835 CN201220456835U CN202839441U CN 202839441 U CN202839441 U CN 202839441U CN 201220456835 CN201220456835 CN 201220456835 CN 201220456835 U CN201220456835 U CN 201220456835U CN 202839441 U CN202839441 U CN 202839441U
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- 238000005259 measurement Methods 0.000 description 2
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Abstract
The utility model relates to an intelligent branch division vacuum circuit breaker controller. The controller is provided with a circular casing. A five-core power supply socket, a five-core current socket, an eight-core signal socket, operation knob and handle, an alarm indication lamp, a function setting window and a grounding bolt are arranged at the bottom of the circular casing. The five-core power supply socket, the five-core current socket, the eight-core signal socket, the alarm indication lamp and the function setting window are electrically connected with a control module arranged in the controller. According to the utility model, a user uses the functions of querying, parameter setting, closing, opening and the like on the ground without climbing onto a telegraph pole; and at the same time, SIM can be used to realize GPRS remote network control, thus the user can carry out remote control elsewhere.
Description
Technical field
The utility model relates to the safe connection device of outdoor grid, especially a kind of intelligent branch demarcation vacuum circuit breaker circuit breaker.
Background technology
Along with the proposition of intelligent grid plan, the year two thousand twenty builds up the target that " strong intelligent grid " becomes China's electric power system power grid construction.The proposition of intelligent grid needs extensive use advanced equipments technology, greatly improves the performance of electrical power trans mission/distribution system.Realize that distribution network automated is a key of intelligent grid.Be the fail safe of raising and assurance supply line, reliability, and to circuit implementation Real Time Monitoring, the distribution protection equipment of intelligence plays a part very important.
China's 10KV line construction is various, and security reliability is poor, Frequent Accidents, and accident is searched difficulty, and fault of branch line has seriously affected the power distribution network safe operation.According to the interrelated data statistics, the failure rate of overhead transmission line accounts for about 70% of backbone fault ratio.How to isolate fast sole user's fault, and do not cause backbone whole piece circuit power outage to occur, and realize that Real Time Monitoring becomes the important topic of present distribution network system.At present solution involves the method for whole piece feeder line power failure because of sole user's accident and protection mismate, related art scheme mainly contains Chinese patent ZL200820051909.X " user demarcation circuit breaker complete set of equipments ".Its deficiency is: (1) maintenance difficult, and the personnel of needing repairing climb to corresponding position and detect maintenance; (2) measurement and control unit can not be realized both-way communication, for realization Real Time Monitoring and quick isolated fault certain limitation is arranged, and realize that such as wish this target needs input larger on the basis of this patent, is unfavorable for extensive use; (3) only have quick-break, overcurrent two segment protects, single shot reclosing can only be set, be unfavorable for according to circuit situation parameters and corresponding function; (4) do not establish display unit on the device, can not check easily line fault.
The utility model content
The technical problems to be solved in the utility model is: a kind of fault current detection function that has is provided, and function and communication function are controlled in protection, are applicable to the intelligent branch demarcation vacuum circuit breaker controller of 10kv overhead transmission line.
The technical scheme that its technical problem that solves the utility model adopts is: a kind of intelligent branch demarcation vacuum circuit breaker controller, described controller has the circular enclosure shell, and the bottom of described circular case is provided with five core supply sockets, five core current sockets, eight core signal plugs, operation knob and handle, alarm indicator, function setting window and earth stud; Described five core supply sockets, five core current sockets, eight core signal plugs, alarm indicator and function setting window are electrically connected with the inner control module that arranges of controller.
The below of the bottom of controller described in the utility model, function setting window is provided with definite value table is set; Have LCDs, option tab and SIM card draw-in groove in the described function setting window.
Controller described in the utility model detects biphase current, zero-sequence current and the line voltage distribution of circuit breaker circuit, above-mentioned analog signals is by the aviation socket output of circuit breaker, pass through the cable unit access controller from five core current sockets and the eight core signal plugs of controller bottom, by signal conversion and the calculating of controller inside, its runtime value of Real-Time Monitoring.
The beneficial effects of the utility model are, have solved the defective that exists in the background technology, adopt the utility model so that the user is using inquiry, parameters, during the functions such as divide-shut brake, need not to climb on the electric pole and operate, and can finish on ground; Simultaneously, the utility model can also utilize SIM to realize the remote network control of GPRS, so that the user can just can realize remote control at the scene.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is the schematic diagram of installing and using of the present utility model;
Fig. 2 is the breaker body structural representation;
Fig. 3 is controller architecture schematic diagram of the present utility model;
Among the figure: 1, breaker body; 2, controller; 3, cable unit; 11, shell; 12, vacuum interrupter; 13, voltage transformer; 14, zero sequence current mutual inductor; 15, mounting seat; 16, earth terminal; 17, bearer bar; 18, aviation socket; 21, circular case; 22, five core supply sockets; 23, five core current sockets; 24, eight core signal plugs; 25, operation knob and handle; 26, alarm indicator; 27, function setting window; 28, definite value arranges table; 29, LCDs; 40, option tab; 41, SIM card draw-in groove.
Embodiment
With preferred embodiment the utility model is described in further detail by reference to the accompanying drawings now.These accompanying drawings are the schematic diagram of simplification, basic structure of the present utility model only is described in a schematic way, so it only show the formation relevant with the utility model.
A kind of intelligent branch demarcation vacuum circuit breaker the complete sets of equipment as shown in Figure 1, the split type controller 2 that comprises breaker body 1 and be arranged on the breaker body outside, be connected by cable unit 3 with breaker body; Controller 2 detects biphase current, zero-sequence current and/or the line voltage distribution of breaker bodies 1, and electric energy-stored, the electric switch-on of control breaker body and electronic separating brake.
As shown in Figure 2, breaker body has shell 11, is provided with vacuum interrupter 12 and voltage transformer 13 in the described shell 11, and described vacuum interrupter 12 is connected with zero sequence current mutual inductor 14; Shell 11 bottoms have mounting seat 15, and a side of base 15 is provided with earth terminal 16; Described shell 11 surfaces are provided with bearer bar 17; The input of breaker body is connected with the service-wire mains side, and the output of breaker body is connected with the input of customer charge side distribution network; The bottom of described breaker body has aviation socket 18.
As shown in Figure 3, controller has circular enclosure shell 21, and the bottom of described circular case is provided with five core supply sockets 22, five core current sockets 23, eight core signal plugs 24, operation knob and handle 25, alarm indicator 26, function setting window 27 and earth stud; Described five core supply sockets, five core current sockets, eight core signal plugs, alarm indicator and function setting window are electrically connected with the inner control module that arranges of controller.
The below of the bottom of controller described in the utility model, function setting window is provided with definite value table 28 is set; Have LCDs 29, option tab 40 and SIM card draw-in groove 41 in the described function setting window; After the SIM card networking is installed, can set up the control network by GPRS, realize finishing control operation.
The electric operating of controller comprises electric energy-stored operation, electric switch-on and electronic separating brake;
Electric energy-stored operation: controller on-delay 10 seconds, automatically detect the breaker energy storage signal, detect intelligent branch demarcation vacuum circuit breaker not energy storage then automatically send electric energy-stored order, after intelligent branch demarcation vacuum circuit breaker receives the energy storage order, automatically finish electric energy-stored;
Electric switch-on: the black operation knob on the dextrorotation controller is located to hand " dynamic circuit connector/reset ", controller output switching signal, circuit breaker automatic closing;
Electronic separating brake: the black operation knob on the left-handed controller was located to " manually dividing ", controller output sub-gate signal, switch automatic brake separating.
Operation principle of the present utility model is: the fault of 10kV feeder line or equipment mainly contains two types of phase fault and single-phase earthings, and controller is processed respectively these two kinds of faults;
The troubleshooting of phase fault: for the phase fault in user circle; the generation that controller is relatively judged fault by detecting the AC phase current of drawing from the inner CT of intelligent branch demarcation vacuum circuit breaker and definite value; in when, in branch line user and the line end user circle over current fault occuring; controller detects overcurrent; after time-delay is judged; the order of controller output separating brake makes the demarcation vacuum circuit breaker automatic brake separating; automatically excise over current fault; other user on transformer station and the feeder line avoids occuring power outage; cause the user to have a power failure for a long time for fear of transient fault; after controller protection action; intelligent branch demarcation vacuum circuit breaker is carried out reclosing; the reclosing number of times; time can be set; maximum 3 times of reclosing number of times; for fear of permanent fault circuit is caused badly damaged, or the time coordinations problem of other protection, controller has been done the post reclosing acceleration defencive function.
The troubleshooting of single-phase earthing: the neutral grounding mode at China 10kV power distribution network can be divided into: isolated neutral, neutral by arc extinction coil grounding and three kinds of modes of Neutral Point Through Low Resistance.Controller is relatively to distinguish and judge in user circle and out-of-bounds single phase ground fault by detecting the zero sequence current signal of drawing from the built-in zero sequence CT of demarcation vacuum circuit breaker of intelligent branch and definite value to the basic handling method of single phase ground fault, for using sound single phase ground fault out-of-bounds, because the zero-sequence current that the zero-sequence current that detects from zero sequence CT detects when single phase ground fault occuring in user circle, therefore, by suitable fixed value adjusting, can make exactly and judging.
Controller is applicable to above-mentioned three kinds of neutral grounding modes, and its action principle is described below:
A, isolated neutral mode
When earth fault occurred in intelligent branch demarcation vacuum circuit breaker load side, the zero-sequence current that detects was:
I
01=3ωU
0C
1
U wherein
0Be the power supply phase voltage, ω is frequency.
When earth fault occurred in intelligent branch demarcation vacuum circuit breaker mains side, the zero-sequence current that detects was:
I
02=3ωU
0C
2
U wherein
0Be the power supply phase voltage, ω is frequency.
In general, C1 is much larger than C2, so I
02Than I
01, namely earth fault is very little at the zero-sequence current that the user detects out-of-bounds the time, and the zero-sequence current that earth fault detects in user circle the time is very large, sets by suitable definite value, and controller can be judged earth fault in the boundary accurately.
B, neutral by arc extinction coil grounding mode and c, Neutral Point Through Low Resistance mode do not elaborate herein.
The basic function of controller has several:
1. manual deciliter function of Switch main body
As general circuit breaker, intelligent branch demarcation vacuum circuit breaker possesses on-site manual deciliter and electronic deciliter control function.
2. analog quantity measuring ability
But controller and Switch main body are used in conjunction with biphase current, zero-sequence current and the line voltage distribution of detection line, and above-mentioned analog signals is by the output of Switch main body aviation socket, and the CT/IO socket bottom controller passes through the aviation plug access controller.Signal conversion by controller inside and calculating, but its runtime value of Real-Time Monitoring (with notebook computer by controller the maintain communications mouth or the configuration communication module after can receive and process these and measure numerical value).
3. function is controlled in protection
A) zero-sequenceprotection
By to the fixed value adjusting of controller with to the monitoring of zero-sequence current, single phase ground fault in user circle can be detected and judge to the intelligent branch true residence circuit breaker of demarcating, and carries out sub-switching operation after time-delay reaches a definite value, automatically excises earth fault; Other user on transformer station and the feeder line avoids occuring power outage; cause the switch separating brake for fear of transient fault; can carry out the reclosing setting to intelligent branch demarcation vacuum circuit breaker. reclosing number of times, time can set up on their own; maximum 3 times of reclosing number of times; circuit is caused badly damaged for fear of permanent fault; or the time coordinations problem of other protection, intelligent branch demarcation vacuum circuit breaker has been done the post reclosing acceleration defencive function.The control function of zero-sequenceprotection is applicable to power network neutral point isolated neutral system, neutral by arc extinction coil grounding system and Neutral Point Through Low Resistance system.
B) overcurrent protection
1, when being set to intelligent branch demarcation vacuum circuit breaker function, connect fixed and to the monitoring of phase current by definite value, the phase fault in user circle can be detected and judge to intelligence branch demarcation vacuum circuit breaker, after time-delay is judged, the order of controller output separating brake makes the demarcation vacuum circuit breaker automatic brake separating, automatically excise over current fault, other user on transformer station and the feeder line avoids occuring power outage, cause the user to have a power failure for a long time for fear of transient fault, after controller protection action, intelligent branch demarcation vacuum circuit breaker is carried out reclosing, the reclosing number of times, time can be set, and maximum 3 times of reclosing number of times causes badly damaged for fear of permanent fault to circuit, or the time coordinations problem of other protection, controller has been done the post reclosing acceleration defencive function;
When 2, being set to the demarcation load switch function, by fixed value adjusting with to the monitoring of phase current, the phase fault in user circle can be detected and judge to demarcation switch, in this malfunction of memory and after detecting transformer station's outlet breaking, after time-delay, carry out sub-switching operation, the short trouble in the user-isolated boundary effectively before transformer station overlaps.
Separating brake under the circuit power failure state and the protection alarm function
Controller is when [automatically] running status, after out-of-bounds phase fault occuring such as the user, can cause transformer station's outlet switch breaking, controller is without input power, after whole device dead electricity, controller is kept its normal operation by storage capacitor, can carry out during this period separating brake output (DC2200V) switch was explained in reliable minute.No matter be that single phase ground fault or phase fault cause and can only branch's demarcation vacuum circuit breaker protection move, the ALARM alarm indicator of controller is all normal bright or glittering, and single-phase earthing or phase fault have occured in prompting user circle.
5. self-checking function
Controller timer-controlled self-inspection (automatically being carried out by program control) when normal operation, the object of self check comprises definite value district, output loop, sampling channel, E
2PROM etc. when self check is unusual, light the self-checking alarming indicator light, and the locking closing loop.
The all operations of controller is established TV output loop protection fusion tube all in the bottom of its circular case in the COM, when the controller internal circuit broke down, built-in TV was unaffected for the protection switch body.The IO socket connects the measurement cable that attracts from switch-side, and the IO socket connects the control cables that attracts from switch-side.ALARM is protection action light-emitting diode index signal; Definite value is set window and is closed by a sealing tegillum when equipment normally moves, and then opens this little small cup when needs carry out fixed value modification or check that state is made in control, operates accordingly.
A) be connected with control cables correctly when measuring cable, and when Switch main body is in closing position, the operating grip of controller is in [automatically] position, then intelligent branch demarcation vacuum circuit breaker is in automatic monitoring running status, in case the interior line fault of user's circle this moment occurs, intelligent branch demarcation vacuum circuit breaker can be finished its automatically function of excision fault.
B) the control operation handle that rotates counterclockwise controller can make the switch automatic brake separating to [dividing] position.
C) after the demarcation vacuum circuit breaker protection action of intelligent branch; the ALARM stand by lamp is bright, clockwise rotates the control operation handle of controller to [resetting] position, can remove the ALARM alarm status; as not taking the hand-reset operation, the ALARM alarm status then automatically terminated after 48 hours.
D) the intelligent branch of electric quantity test function [electric weight test button] demarcation vacuum circuit breaker needs the electric weight of self to process when handling failure, whether how many decision systems of electric weight can handle failure condition well, so being very important " electric quantity test " two buttons, depresses simultaneously electric quantity test, normal operation in the running indicator 4 seconds, this moment, the electric capacity electric weight was qualified.
E) subsidiary communications function [RS-232/RS-485 interface] is mainly used and the maintenance of communicating by letter, and setting parameter etc. must be by the maintain communications mouth with the notebook computer setting of making amendment.
Controller is indicated various operating states by light-emitting diode.
The " RUN " indicator light, glittering this indicator light during the controller operation, it has the internal electric source measuring ability, one second blanking time.
" fault " indicator light is lighted this indicator light during controller self check fault;
" overcurrent " indicator light is lighted during phase current overdetermination value, extinguishes when being lower than definite value;
" ground connection " indicator light is lighted during earth current overdetermination value, extinguishes when being lower than definite value;
" minute position " indicator light when controlled switch is in separating brake, is lighted this indicator light.
Controller described in the utility model can increase and join communication module as required, SIM card namely is installed networks, and wireless handheld terminal can show and all parameters of Configuration Control Unit like this, and liquid crystal panel and the handheld terminal of simultaneously retentive control device keep simultaneous display.
What describe in the above specification is embodiment of the present utility model, various not illustrating is construed as limiting flesh and blood of the present utility model, the person of an ordinary skill in the technical field after having read specification can to before described embodiment make an amendment or be out of shape, and do not deviate from essence and the scope of utility model.
Claims (3)
1. intelligent branch demarcation vacuum circuit breaker controller, it is characterized in that: described controller has the circular enclosure shell, and the bottom of described circular case is provided with five core supply sockets, five core current sockets, eight core signal plugs, operation knob and handle, alarm indicator, function setting window and earth stud; Described five core supply sockets, five core current sockets, eight core signal plugs, alarm indicator and function setting window are electrically connected with the inner control module that arranges of controller.
2. intelligent branch as claimed in claim 1 demarcation vacuum circuit breaker controller, it is characterized in that: the below of the bottom of described controller, function setting window is provided with definite value table is set; Have LCDs, option tab and SIM card draw-in groove in the described function setting window.
3. intelligent branch as claimed in claim 1 demarcation vacuum circuit breaker controller, it is characterized in that: described controller detects biphase current, zero-sequence current and the line voltage distribution of circuit breaker circuit, above-mentioned analog signals is by the aviation socket output of circuit breaker, pass through the cable unit access controller from five core current sockets and the eight core signal plugs of controller bottom, by signal conversion and the calculating of controller inside, its runtime value of Real-Time Monitoring.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220456835 CN202839441U (en) | 2012-09-08 | 2012-09-08 | Intelligent branch division vacuum circuit breaker controller |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220456835 CN202839441U (en) | 2012-09-08 | 2012-09-08 | Intelligent branch division vacuum circuit breaker controller |
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| Publication Number | Publication Date |
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| CN202839441U true CN202839441U (en) | 2013-03-27 |
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| CN 201220456835 Expired - Fee Related CN202839441U (en) | 2012-09-08 | 2012-09-08 | Intelligent branch division vacuum circuit breaker controller |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109801814A (en) * | 2019-03-21 | 2019-05-24 | 广东电网有限责任公司 | A kind of pole-mounted circuit breaker of secondary deep fusion |
-
2012
- 2012-09-08 CN CN 201220456835 patent/CN202839441U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109801814A (en) * | 2019-03-21 | 2019-05-24 | 广东电网有限责任公司 | A kind of pole-mounted circuit breaker of secondary deep fusion |
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Granted publication date: 20130327 Termination date: 20140908 |
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