CN203813303U - 10kV outdoor permanent magnet vacuum circuit breaker device - Google Patents
10kV outdoor permanent magnet vacuum circuit breaker device Download PDFInfo
- Publication number
- CN203813303U CN203813303U CN201420255340.4U CN201420255340U CN203813303U CN 203813303 U CN203813303 U CN 203813303U CN 201420255340 U CN201420255340 U CN 201420255340U CN 203813303 U CN203813303 U CN 203813303U
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- permanent magnetic
- voltage
- magnetic vacuum
- vacuum breaker
- circuit breaker
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Abstract
The utility model discloses a 10kV outdoor permanent magnet vacuum circuit breaker device comprising a lightning arrester, a permanent magnet vacuum circuit breaker, and an isolation switch connected between the permanent magnet vacuum circuit breaker and a system three-phase circuit. The permanent magnet vacuum circuit breaker is provided with a single-phase current transformer used for measuring the current of each phase, a voltage transformer used for measuring the voltage between the phases, a zero sequence current transformer, and a voltage measuring device used for measuring the zero sequence voltage. The output end of the single-phase current transformer, the output end of the voltage transformer, and the output end of the zero sequence current transformer are connected with a controller used for controlling the operation of the permanent magnet vacuum circuit breaker. The voltage measuring device comprises three capacitors and a piezoresistor circuit. The tail ends of the three capacitors are connected together, and are connected with the detection signal input port of the controller, and the head ends of the three capacitors are respectively connected with the three phase lines. One end of the piezoresistor is connected with the tail ends of the three capacitors, and the other end is grounded. The 10kV outdoor permanent magnet vacuum circuit breaker device is advantageous in that the integrated design can be carried out on the basis of satisfying the using condition, and the circuit breaker device is suitable for the rural power grid outdoor construction operation.
Description
Technical field
The utility model relates to a kind of circuit breaker, specifically a kind of 10kV outdoor permanent magnetic vacuum circuit breaking device.
Background technology
The 10kV outdoor vacuum circuit breaker that domestic rural power grids use, in actual installation, use procedure, there are the following problems: one, installation difficulty are large.The circuit breaker of existing ZW32-12 spring mechanism or ZW32-12D permanent magnet mechanism, all needs to install separately voltage transformer, circuit breaker and controller when mounted, and required module and support are many, and inconvenience is installed; Two, voltage transformer operational reliability is poor.Because long-term sudden and violent leakage of pour mass of voltage transformer moved under the irradiation of solar ultraviolet, the life-span is short on the one hand; Owing to protecting without current limliting or superpotential electric device in voltage transformer, be vulnerable to the damage of the other factorses such as extraneous thunder and lightning on the other hand; Three, branch and terminal use's circuit complexity in 10kV circuit, is difficult to the fault that judges that mains side or load side occur.
Utility model content
Technical problem to be solved in the utility model is to overcome in prior art, and circuit breaker installation difficulty is large, be difficult to failure judgement position and move the problems such as unreliable, and a kind of 10kV outdoor permanent magnetic vacuum circuit breaking device is provided.
The utility model for addressing the above problem adopted technical scheme is: a kind of 10kV outdoor permanent magnetic vacuum circuit breaking device, comprise permanent magnetic vacuum breaker and be connected on permanent magnetic vacuum breaker and three-phase circuit between isolating switch, on the connection line between permanent magnetic vacuum breaker and isolating switch, be also connected to lightning arrester, in described permanent magnetic vacuum breaker, be packaged with the single-phase current transformer for measuring each phase current, for measuring the voltage transformer of voltage between phases, for measuring the zero sequence current mutual inductor of zero-sequence current and for measuring the voltage measuring apparatus of residual voltage, described single-phase current transformer, the output of voltage transformer and zero sequence current mutual inductor is all connected to the controller for controlling permanent magnetic vacuum breaker action, described voltage measuring apparatus comprises three group capacitors and a piezo-resistance, the end of three group capacitors joins, and be connected to the detection signal input port of controller, the head end of three group capacitors is connected with three phase lines respectively, the end of one end of piezo-resistance and three group capacitors joins, other end ground connection.
The input of described voltage transformer is connected to protection fuse, installs protection fuse additional protect at the inlet wire of voltage transformer, reduces the impact of the other factorses such as extraneous thunder and lightning on its generation, ensures tripper power supply and measures sampling reliability of operation.
Permanent magnetic vacuum breaker comprises the pole being positioned on its casing and is positioned at the operating mechanism of casing, pole is by the poured with epoxy resin moulding of vacuum interrupter, input terminal and outlet terminal, vacuum interrupter is positioned at pole, can reduce the pollution of vacuum arc extinguish chamber housing, avoid vacuum interrupter to be subject to extraneous shock and the infringement of condensation, the reliability of raising permanent magnetic vacuum breaker; Permanent magnetic vacuum breaker mechanism stable is high, and contact pressure is large, and breaking speed is fast, and when disjunction without restriking, when action, there will not be overvoltage.
The utility model except single-phase current transformer and zero sequence current mutual inductor, voltage transformer, voltage measuring apparatus be all located in the casing of permanent magnetic vacuum breaker, permanent magnetic vacuum breaker comprises outlet terminal, input terminal, vacuum interrupter and the operating mechanism being connected with the moving contact of vacuum interrupter, the casing of permanent magnetic vacuum breaker is provided with the operating grip being connected with operating mechanism outward, wherein, operating grip is made up of separating brake draw ring and the combined floodgate draw ring of controlling respectively the action of permanent magnetic vacuum breaker separating brake and feed motion.
Beneficial effect: one, voltage measuring apparatus in the utility model is in the time of normal operation, can measure the induced voltage over the ground of every phase in three-phase circuit, if there is certain phase earth fault, controller is according to single-phase current transformer, voltage transformer, the output signal Comprehensive Control permanent magnetic vacuum breaker tripping operation of voltage measuring apparatus and zero sequence current mutual inductor disconnects, if permanent magnetic vacuum breaker carries out again tripping after reclosing, now mains side circuit is charged, load side is without electricity, if voltage measuring apparatus monitors mains side phase there is abnormal residual voltage in circuit, judge mains side fault, otherwise be load side fault,
Two, this tripper mainly comprises controller, isolating switch, lightning arrester and permanent magnetic vacuum breaker four major parts, carries out Integration Design on the basis that meets service condition, and installation and easy to assembly is applicable to the operation of rural power grids field construction.
Brief description of the drawings
Fig. 1 is elementary diagram of the present utility model;
Fig. 2 is the schematic diagram of permanent magnetic vacuum breaker in the utility model;
Fig. 3 is the right view of Fig. 2.
Reference numeral: 1, isolating switch, 2, lightning arrester, 3, voltage transformer; 4, controller, 5, protection fuse, 6, voltage measuring apparatus; 7, piezo-resistance, 8, permanent magnetic vacuum breaker, 81, vacuum interrupter; 82, operating mechanism, 9, single-phase current transformer, 10, zero sequence current mutual inductor; 11, outlet terminal, 12, input terminal, 13, operating grip; 131, separating brake draw ring, 132, combined floodgate draw ring.
Embodiment
A kind of 10kV outdoor permanent magnetic vacuum circuit breaking device, elementary diagram as shown in Figure 1, this tripper comprises controller 4, permanent magnetic vacuum breaker 8, is connected on isolating switch 1, lightning arrester 2 four major parts between permanent magnetic vacuum breaker 8 and three-phase circuit, lightning arrester 2 is connected on the connection line between permanent magnetic vacuum breaker 8 and isolating switch 1, parts are few, when outdoor installation, mounting bracket and assembling are simple, and permanent magnetic vacuum breaker weight only has 120 ~ 150kg, be beneficial to rural power grids field construction.Wherein, isolating switch 1 makes there is a visible breakpoint on main line, is convenient to the maintenance protection of device; Lightning arrester 2 discharges over the ground for circuit is high-tension, protects this tripper to avoid the infringement of high-tension electricity.
As shown in Figure 1, in permanent magnetic vacuum breaker 8, be packaged with single-phase current transformer for measuring each phase current, for measuring the voltage transformer 3 of voltage between phases, for measuring the zero sequence current mutual inductor 10 of zero-sequence current and for measuring the voltage measuring apparatus 6 of residual voltage, the output of described single-phase current transformer, voltage transformer 3, voltage measuring apparatus 6 and zero sequence current mutual inductor 10 is all connected to the controller 4 moving for controlling permanent magnetic vacuum breaker 8.As seen from Figure 1, described voltage measuring apparatus 6 comprises that the end of three group capacitors and piezo-resistance 7, three group capacitors joins, and is connected to the detection signal input port of controller 4, and the head end of three group capacitors is connected with three phase lines respectively; When normal operation, induced voltage over the ground that can the every phase of measurement circuitry, as there is certain phase earth fault, zero-sequence current and residual voltage value exceed standard, permanent magnetic vacuum breaker 8 trips, permanent magnetic vacuum breaker 8 carries out after reclosing, once be judged to be permanent earth, tripping operation again, now mains side circuit is charged, load side is without electricity, if voltage measuring apparatus 6 monitors the mutually abnormal residual voltage of mains side, judge mains side fault, otherwise be load side fault.
As shown in Figures 2 and 3, single-phase current transformer, voltage transformer 3, zero sequence current mutual inductor 10 and voltage measuring apparatus 6 are all located in the casing of permanent magnetic vacuum breaker 8, permanent magnetic vacuum breaker 8 comprises outlet terminal 11, input terminal 12, vacuum interrupter 81 and the operating mechanism 82 being connected with the moving contact of vacuum interrupter 81, the casing of permanent magnetic vacuum breaker 8 is provided with the operating grip 13 being connected with operating mechanism 82 outward, wherein, operating grip 13 is made up of separating brake draw ring 131 and the combined floodgate draw ring 132 of controlling respectively permanent magnetic vacuum breaker 8 separating brake actions and feed motion.
In the utility model, voltage transformer 3 and voltage measuring apparatus 6 are as this tripper power supply and measure the core component of sampling, must ensure its operational reliability.On the one hand voltage transformer 3 and voltage measuring apparatus 6 are placed in the casing of permanent magnetic vacuum breaker 8; Be to install protection additional at voltage transformer 3 inlet wires on the other hand, install protection fuse 5 additional, reduce the other factorses such as extraneous thunder and lightning it is damaged.
This tripper has carried out Integration Design in structure aspects; install and simplify; realize the reliably protecting of voltage transformer; can be used for using as branch or user demarcation switch in rural power grids 10kV overhead transmission line; in order to automatism isolation branch line or user malfunction; reduce power failure area, be beneficial to rapidly and fix a breakdown.
Claims (4)
1. a 10kV outdoor permanent magnetic vacuum circuit breaking device, comprise permanent magnetic vacuum breaker (8) and be connected on the isolating switch (1) between permanent magnetic vacuum breaker (8) and three-phase circuit, on the connection line between permanent magnetic vacuum breaker (8) and isolating switch (1), be also connected to lightning arrester (2), it is characterized in that: in described permanent magnetic vacuum breaker (8), be packaged with the single-phase current transformer for measuring each phase current, for measuring the voltage transformer (3) of voltage between phases, for measuring the zero sequence current mutual inductor (10) of zero-sequence current and for measuring the voltage measuring apparatus (6) of residual voltage, described single-phase current transformer, the output of voltage transformer (3) and zero sequence current mutual inductor (10) is all connected to the controller (4) for controlling permanent magnetic vacuum breaker (8) action, described voltage measuring apparatus (6) comprises three group capacitors and a piezo-resistance (7), the end of three group capacitors joins, and be connected to the detection signal input port of controller (4), the head end of three group capacitors is connected with three phase lines respectively, one end of piezo-resistance (7) and the end of three group capacitors join, other end ground connection.
2. a kind of 10kV outdoor permanent magnetic vacuum circuit breaking device according to claim 1, is characterized in that: the input of described voltage transformer (3) is connected to protection fuse (5).
3. a kind of 10kV outdoor permanent magnetic vacuum circuit breaking device according to claim 1, it is characterized in that: described single-phase current transformer, voltage transformer (3), zero sequence current mutual inductor (10) and voltage measuring apparatus (6) are all located in the casing of permanent magnetic vacuum breaker (8), permanent magnetic vacuum breaker (8) comprises outlet terminal (11), input terminal (12), vacuum interrupter (81) and the operating mechanism (82) being connected with the moving contact of vacuum interrupter (81), the casing of permanent magnetic vacuum breaker (8) is provided with the operating grip (13) being connected with operating mechanism (82) outward.
4. a kind of 10kV outdoor permanent magnetic vacuum circuit breaking device according to claim 3, is characterized in that: described operating grip (13) is made up of separating brake draw ring (131) and the combined floodgate draw ring (132) of controlling respectively the action of permanent magnetic vacuum breaker (8) separating brake and feed motion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420255340.4U CN203813303U (en) | 2014-05-19 | 2014-05-19 | 10kV outdoor permanent magnet vacuum circuit breaker device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420255340.4U CN203813303U (en) | 2014-05-19 | 2014-05-19 | 10kV outdoor permanent magnet vacuum circuit breaker device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203813303U true CN203813303U (en) | 2014-09-03 |
Family
ID=51452013
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420255340.4U Expired - Fee Related CN203813303U (en) | 2014-05-19 | 2014-05-19 | 10kV outdoor permanent magnet vacuum circuit breaker device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203813303U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106443131A (en) * | 2016-10-18 | 2017-02-22 | 珠海许继电气有限公司 | Outdoor power-supply and zero-sequence-voltage measuring device |
-
2014
- 2014-05-19 CN CN201420255340.4U patent/CN203813303U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106443131A (en) * | 2016-10-18 | 2017-02-22 | 珠海许继电气有限公司 | Outdoor power-supply and zero-sequence-voltage measuring device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140903 Termination date: 20180519 |
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| CF01 | Termination of patent right due to non-payment of annual fee |