CN203312759U - Synergetic protective device of ring network cabinet units - Google Patents
Synergetic protective device of ring network cabinet units Download PDFInfo
- Publication number
- CN203312759U CN203312759U CN2013203533456U CN201320353345U CN203312759U CN 203312759 U CN203312759 U CN 203312759U CN 2013203533456 U CN2013203533456 U CN 2013203533456U CN 201320353345 U CN201320353345 U CN 201320353345U CN 203312759 U CN203312759 U CN 203312759U
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- China
- Prior art keywords
- unit
- wire
- breaker
- vacuum circuit
- outgoing line
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- Expired - Fee Related
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Abstract
The utility model discloses a synergetic protective device of ring network cabinet units. The device comprises a cabinet body. The device is characterized in that the cabinet body comprises a wire incoming unit and a wire outgoing unit; the wire incoming unit comprises a vacuum circuit breaker which is connected in series with a wire incoming cabinet bus; the wire outgoing unit comprises a vacuum circuit breaker which is connected in series with a wire outgoing cabinet bus; the vacuum circuit breakers of the wire incoming unit and the wire outgoing unit are connected with actuators; each actuator is provided with an action device and a controller; and the buses of the wire incoming unit and the wire outgoing unit are provided with detection devices. According to the utility model, when a detection device detects that the normal current or the fault current of a branch circuit is not successfully broken, the actuator of the wire incoming unit is immediately controlled to switch off a switch device of the wire incoming unit; the current of the downstream branch circuit is cut off; the breaking requirement of a circuit is completed by the switch of the wire incoming unit or the wire outgoing unit; and the short circuit current is timely and safely broken under the condition that the vacuum circuit breaker of the wire outgoing unit has a fault, so as to protect an electric device.
Description
Technical field
The utility model relates to the device of coordinating protection between a kind of ring main unit unit, particularly the device of coordinating protection between the ring main unit unit of a kind of energy detection and processing vacuum circuit-breaker separating brake failure fault.
Background technology
The line disconnection device of the ring main unit adopted in distribution system at present, mainly is comprised of the on-load switch of wire inlet unit series connection and the vacuum circuit-breaker of outgoing line unit series connection.When the vacuum level of vacuum arc-quenching chamber of vacuum circuit breaker reduced, the arc control device medium increased.When the demand of cut-offfing was arranged, the electric arc cut-off made medium ionization, effectively disjunction short circuit current.When the vacuum contact of breaker wore and tore, the high temperature that during disjunction, electric arc produces made contact generation melting welding, effectively disjunction short circuit current.When the operating mechanism tripping of contact, contact can not be carried out the disjunction action, can not the disjunction short circuit current.And the on-load switch of wire inlet unit does not possess the ability of disjunction short circuit current.Therefore, in case short trouble occurs at circuit, when producing short circuit current, above three kinds of faults appear in vacuum circuit-breaker.Ring main unit is the disjunction short circuit current effectively, the protection power consumption equipment, and this will cause huge economic loss and hazard to person.
Summary of the invention
The purpose of this utility model just is to solve the problems referred to above that prior art exists; for the break-up device that overcomes existing ring main unit can not be in the situation that the outgoing line unit vacuum circuit-breaker breaks down the deficiency of disjunction short circuit current, the device of coordinating protection between a kind of ring main unit unit is provided.This device can not only realize in the situation that the function of outgoing line unit vacuum circuit-breaker normal operation breaking current, and can in the situation that the outgoing line unit vacuum circuit-breaker break down can not breaking current, the disjunction short circuit current.The protection of realization to power consumption equipment.
The method of coordinating protection between a kind of ring main unit unit, include wire inlet unit and outgoing line unit two parts, be characterized in: the combination switch of wire inlet unit/outgoing line unit is replaced with to vacuum circuit-breaker and is furnished with operating mechanism, described operating mechanism is provided with movement device and controller, when downstream branch line circuit is short-circuited or other fault and the switch of branch line circuit can't complete normal breaking function the time, the operating mechanism of controlling immediately wire inlet unit disconnects the switching device of wire inlet unit, thereby cut off the electric current in the branch line circuit of downstream, by the switch of wire inlet unit/outgoing line unit, completed the disjunction requirement of circuit, realize thus in the situation that branch line unit switch plant failure, the protection power consumption equipment.
When in the branch line circuit of the downstream of outgoing line unit, short circuit current occurring, checkout gear detects short circuit current and controls the vacuum short-circuiting device that the outgoing line unit operating mechanism disconnects outgoing line unit, checkout gear detects the outgoing line unit bus current more afterwards, if short circuit current being detected still exists, control the vacuum short-circuiting device of the closed outgoing line unit of outgoing line unit operating mechanism at once, and control wire inlet unit operating mechanism disconnects the vacuum short-circuiting device of wire inlet unit, the short circuit current in open-circuit line.
For realizing above purpose, the utility model solves the technical scheme that its technical problem adopts and is.
Between this ring main unit unit, the device of coordinating protection, include cabinet, it is characterized in that.
Described cabinet comprises wire inlet unit and outgoing line unit.
Described wire inlet unit comprises the vacuum circuit-breaker be connected on the incoming line cabinet bus.
Described outgoing line unit comprises the vacuum circuit-breaker be connected on the outgoing line cabinet bus.
On the vacuum circuit-breaker of described inlet wire and outgoing line unit, be connected with operating mechanism (permanent magnet mechanism or spring mechanism), can realize separating brake and combined floodgate bidirectional-movement.
Described operating mechanism is provided with movement device and controller, and controller can be accepted Long-distance Control.
On the bus of described inlet wire and outgoing line unit, checkout gear is housed, can detects the bus current size.
In the looped network cabinet, checkout gear is by current sensor and the voltage sensor measured vacuum arc control device signal of telecommunication and pass through the action of power amplifier control operating mechanism, and vacuum circuit-breaker is connected by insulated tension pole with operating mechanism.
The vacuum circuit-breaker of wire inlet unit and outgoing line unit is controlled and is carried out separating brake, feed motion by operating mechanism.
Compared with prior art, the beneficial effects of the utility model are.
When outgoing line unit when in electric line, short circuit current occurring, checkout gear detects short circuit current and controls the vacuum short-circuiting device that the outgoing line unit operating mechanism disconnects outgoing line unit, checkout gear detects the outgoing line unit bus current more afterwards, if short circuit current being detected still exists, control the vacuum short-circuiting device of the closed outgoing line unit of outgoing line unit operating mechanism at once, and control wire inlet unit operating mechanism disconnects the vacuum short-circuiting device of wire inlet unit, the short circuit current in open-circuit line.The utility model can be in normal breaking current, in the situation that the disjunction short circuit current of the timely safety of outgoing line unit vacuum circuit-breaker fault is protected power consumption equipment.
The accompanying drawing explanation
Fig. 1 is ring main unit schematic diagram of the present utility model.
Left and right two branch roads in Fig. 1 are the inlet wire branch road, on branch road, are equipped with detecting element and vacuum circuit-breaker.
Two of centres in Fig. 1 branch road is the outlet branch road, on branch road, is equipped with detecting element and vacuum circuit-breaker.
Embodiment
For making the purpose of this utility model, technical scheme and advantage clearer, below execution mode of the present utility model is done further and explained in detail.
On two inlet wire branch roads shown in Figure 1 (two the inlet wire branch roads of take are example, can be many), the utility model is replaced by vacuum circuit-breaker by traditional on-load switch that can not the disjunction short circuit current.Make every circuit that the switching device of disjunction short circuit current all is housed.
On two inlet wire branch roads shown in Figure 1, the utility model power take-off mechanism of operating mechanism as the vacuum circuit-breaker breaking current, operating mechanism has the ability of any time bidirectional-movement, therefore can make at any time vacuum circuit-breaker implement separating brake or feed motion, operating mechanism can be permanent magnet mechanism or spring mechanism.
On two outlet branch roads shown in Figure 1 (two the outlet branch roads of take are example, can be many), the utility model is equipped with current monitoring device, and monitoring device is used for the size of electric current in Monitoring Line constantly, and the result measured can be sent to controller.
When needs turn-offed load current, the control personnel send control command control operating mechanism disconnected outlet branch road vacuum circuit-breaker, can disconnect load current.
The vacuum circuit-breaker that turn-offs load current and outlet branch road operating mechanism and control thereof when needs breaks down, in the time of can not performing an action instruction, can control inlet wire branch road operating mechanism inlet wire branch road vacuum circuit-breaker is disconnected, get final product the disjunction load current, the execution instruction.
When needs turn-offed short circuit current, the control personnel send control command control operating mechanism disconnected outlet branch road vacuum circuit-breaker, gets final product interrupting short circuit.
To turn-off short circuit current and outlet branch road operating mechanism electric or mechanical malfunctioning while tripping occurring due to self when needs, can control inlet wire branch road operating mechanism inlet wire branch road vacuum circuit-breaker is disconnected, can the disjunction short circuit current, and the execution instruction.
The vacuum level of vacuum arc-quenching chamber that turn-offs short circuit current and outlet branch road vacuum circuit-breaker when needs reduces or contact heavy wear and can't the disjunction short circuit current time.For the vacuum interrupter that prevents outlet branch road vacuum circuit-breaker is blasted under the calcination of high-temperature electric arc.Can be by the closed outlet branch road of outlet branch road operating mechanism vacuum circuit-breaker, extinguish arcs.Control simultaneously the action of inlet wire branch road operating mechanism, the vacuum circuit-breaker on disjunction inlet wire branch road, turn-off short circuit current, realizes the protection to power consumption equipment.
By the different protection mechanisms that require of turn-offing under above reply different situations, the utility model can be realized the requirement that circuit turn-offs better, the safety of protection power consumption equipment.
Although by reference some preferred implementation of the present utility model, the utility model is illustrated and describes, but those of ordinary skill in the art should be understood that can be in form or branch road quantitatively it is done to various changes, and do not depart from spirit and scope of the present utility model.
Claims (3)
1. the device of coordinating protection between a ring main unit unit, include cabinet, it is characterized in that:
Described cabinet comprises wire inlet unit and outgoing line unit;
Described wire inlet unit comprises the vacuum circuit-breaker be connected on the incoming line cabinet bus;
Described outgoing line unit comprises the vacuum circuit-breaker be connected on the outgoing line cabinet bus;
On the vacuum circuit-breaker of described inlet wire and outgoing line unit, be connected with operating mechanism;
Described operating mechanism is provided with movement device and controller;
On the bus of described inlet wire and outgoing line unit, checkout gear is housed.
2. the device of coordinating protection between ring main unit according to claim 1 unit is characterized in that:
In the looped network cabinet, checkout gear is by current sensor and the voltage sensor measured vacuum arc control device signal of telecommunication and pass through the action of power amplifier control operating mechanism, and vacuum circuit-breaker is connected by insulated tension pole with operating mechanism.
3. the device of coordinating protection between ring main unit according to claim 1 unit is characterized in that: the vacuum circuit-breaker of wire inlet unit and outgoing line unit is controlled and is carried out separating brake, feed motion by operating mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203533456U CN203312759U (en) | 2013-06-20 | 2013-06-20 | Synergetic protective device of ring network cabinet units |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203533456U CN203312759U (en) | 2013-06-20 | 2013-06-20 | Synergetic protective device of ring network cabinet units |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203312759U true CN203312759U (en) | 2013-11-27 |
Family
ID=49618934
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013203533456U Expired - Fee Related CN203312759U (en) | 2013-06-20 | 2013-06-20 | Synergetic protective device of ring network cabinet units |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203312759U (en) |
-
2013
- 2013-06-20 CN CN2013203533456U patent/CN203312759U/en not_active Expired - Fee Related
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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: 20131127 Termination date: 20160620 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |