CN213484515U - Bus arc light protection system - Google Patents

Abstract

The utility model discloses a generating line electric arc light protection system belongs to electric power system technical field, include the casing and install the inside electric arc light protection circuit board of casing, still install operating panel on the casing, the casing is kept away from operating panel's one end is provided with interface structure, interface structure externally mounted has the protective cover, the line mouth is seted up to the protective cover both sides, is used for inserting interface structure's circuit passes through, the protective cover pass through connection structure with the casing is connected. The protective cover through the installation protects the interface structure, prolongs interface structure's ageing time effectively, improves life to the both sides of protective cover set up the line mouth, make the circuit of connecting interface structure only can stretch out from the both sides of casing, therefore the circuit can not influence the vertical of casing and put, and this casing not only can be vertically put and can also the level put, alternate according to the demand, convenience of customers' operation is used.

Description

Bus arc light protection system

Technical Field

The utility model relates to an electric power system technical field, in particular to generating line electric arc light protection system.

Background

Arc light is a short circuit between a charged body and ground or between charged bodies through ionized gas (air). High energy arc light faults manifest as electrical explosions. They release a large amount of energy in the form of radiation, heat, intense light and high pressure waves. In China, major equipment and personnel injury is mainly caused by arc light in short-circuit faults of medium-voltage buses and low-voltage buses, however, most of the medium-voltage buses and the low-voltage buses in China are not provided with rapid bus protection, and only simple arc extinction devices and transformer backup protection are adopted. The protection is low in intellectualization and low in action speed, the fault removal time is usually prolonged, the damage degree of equipment is further expanded, even a vicious accident of 'fire burning and operation', the transformer is impacted to run once, the safe running of the whole power grid is influenced, and therefore an arc light protection system is needed to improve the running safety of the power grid.

The arc light protection system is composed of a main unit, a current unit, a sensor unit, an arc sensor and a connecting cable. The arc light sensor can be placed at any position of the switch device (generally installed in a bus chamber to detect bus faults), the function of protecting subareas can be realized according to the actual physical position of the arc light sensor, the position of the fault occurrence is displayed on an arc light control unit, the power failure processing time can be reduced by the function, so that the power supply can be recovered quickly, all units of the general arc light protection system are integrated in the shell, an interface extends out of the shell to facilitate wiring, the traditional arc light protection system is lack of protection at the interface position and is easy to age due to environmental influence, and the operation panel of the general arc light protection system is opposite to the wiring terminal, so that the circuit at the rear end of the shell influences the vertical mode of the shell, and the arc light protection system is inconvenient to use.

SUMMERY OF THE UTILITY MODEL

The utility model discloses an it is easy ageing just in order to solve above-mentioned electric arc light protection system wiring department, influence life, the mixed and disorderly problem of putting that easily influences the casing of line is walked to the circuit and a generating line electric arc light protection system is provided, it is good to have an interface structure protecting effect, long service life, the protective cover is opened and is closed do not influence wiring efficiency easily, adopts the mode that overcurrent and electric arc light detection combined, and the response is fast, advantage that protecting effect is good.

The utility model discloses a following technical scheme realizes above-mentioned purpose, a generating line electric arc light protection system, include the casing and install the inside electric arc light protection circuit board of casing, still install operating panel on the casing, the casing is kept away from operating panel's one end is provided with interface structure, interface structure externally mounted has the protective cover, the line mouth is seted up to the protective cover both sides, is used for inserting interface structure's circuit passes through, the protective cover pass through connection structure with the casing is connected.

Preferably, the connecting structure is an elastic telescopic structure.

Preferably, the elastic telescopic structure comprises a movable hole formed in the shell and a connecting rod fixed on the protective cover, the other end of the connecting rod is inserted into the movable hole, the end of the connecting rod is provided with a limiting block, and a spring is sleeved on one section of outer wall of the connecting rod between the limiting block and the movable hole.

Preferably, the side wall of the shell is provided with an access hole, and the access hole is sealed by installing a side cover plate through a bolt.

Preferably, the arc light protection circuit board is integrated with a main control protection unit, an arc light sensor interface, a zero sequence sensor interface, a relay and a circuit breaker, and the main control protection unit is used for outputting a control signal to the relay to control the on-off of the circuit breaker by acquiring signals of the arc light sensor and the zero sequence sensor.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the protective cover through the installation protects the interface structure, prolong interface structure's ageing time effectively, and service life is prolonged, and the both sides of protective cover set up the line crossing mouth, make the circuit of connecting interface structure only can stretch out from the both sides of casing, therefore the circuit can not influence the vertical of casing and put, this casing not only can vertically put and can also the level put, transform according to the demand, convenience of customers' operation is used, the protective cover adopts the telescopic connection of elasticity, when the wiring, can pull open and expose interface structure, the wiring finishes, the automatic resilience of protective cover covers interface structure and protects, the efficiency of wiring is improved.

2. The main control non-protection unit is matched with the abnormal condition of the detection circuit through arc light detection and overcurrent detection, and has the advantages of high protection action speed and high reliability.

Drawings

Fig. 1 is a schematic view of the overall structure of the device of the present invention.

Fig. 2 is a schematic view of the protective cover opening structure of the present invention.

Fig. 3 is a schematic view of the connection structure of the present invention.

Fig. 4 is a schematic diagram of the connection structure of the arc light protection circuit board system of the present invention.

In the figure: 1. casing, 2, operating panel, 3, protective cover, 4, cross the line mouth, 5, side apron, 6, connection structure, 7, interface structure, 8, connecting rod, 9, spring, 10, stopper, 11, activity hole.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1, a bus arc light protection system includes a housing 1 and an arc light protection circuit board installed inside the housing 1, the housing 1 is further installed with an operation panel 2, one end of the housing 1 far away from the operation panel 2 is provided with an interface structure 7, a protection cover 3 is installed outside the interface structure 7, two sides of the protection cover 3 are provided with wire passing ports 4 for passing a wire connected to the interface structure 7, the protection cover 3 is connected with the housing 1 through a connection structure 6, the arc light protection circuit board provides a protection function of circuit breaking after the system detects arc light, the housing 1 is used for bearing the arc light protection circuit board, the operation panel 2 is used for setting parameters of the system, the interface structure 7 is installed at the tail of the housing 1 and is used for connecting a sensor and an electric device, the protection cover 3 covers the interface structure 7 to protect the interface structure 7 and reduce the probability of aging and damage, the both sides of protective cover 3 set up wire passing mouth 4 for the circuit of access interface structure 7 for the circuit stretches out from casing 1's afterbody both sides, and casing 1 can lie flat when putting like this and put, also can prevent that protective cover 3 from standing down and preventing, makes things convenient for the installation of casing 1 or user to use operating panel 2.

As shown in fig. 2 and fig. 3, the connection structure 6 is an elastic telescopic structure, the protective cover 3 is opened and closed by elastic stretching, when wiring, the protective cover 3 can be pulled out to expose the interface structure 7 only by applying a force far away from the operation panel 2 to the protective cover 3, the protective cover 3 can be supported by a tool or hooked by a finger to prevent springback, wiring can be performed at this time, after wiring is completed, the protective cover 3 is loosened or taken off, the protective cover 3 is covered on the interface structure 7 again to facilitate wiring operation, the elastic telescopic structure comprises a movable hole 11 formed on the housing 1 and a connecting rod 8 fixed on the protective cover 3, the other end of the connecting rod 8 is inserted into the movable hole 11, a limit block 10 is arranged at the end, a section of the outer wall of the connecting rod 8 between the limit block 10 and the movable hole 11 is sleeved with a spring 9, when the protective cover 3 is, stopper 10 extrudees spring 9, and spring storage elastic potential energy when loosening protective cover 3, and spring 9 resumes, and elasticity pulling protective cover 3 reverse movement covers on interface structure 7 again.

An access hole is formed in the side wall of the shell 1 and is sealed through a bolt mounting side cover plate 5, and the access hole is convenient to open to overhaul the arc light protection circuit board.

As shown in fig. 4, the arc light protection circuit board is integrated with a main control protection unit, an arc light sensor interface, a zero sequence sensor interface, a relay and a circuit breaker, the main control protection unit controls the on-off of the circuit breaker by collecting signals of the arc light sensor and the zero sequence sensor and outputting control signals to the relay, the arc light sensor interface is connected with the arc light sensor in the power grid, whether the power grid has arc light or not is detected, the zero sequence sensor interface is connected with the zero sequence sensor in the power grid, whether the power grid has over-current phenomenon or not is detected, whether the signals of the arc light detection and the over-current detection exceed a safety threshold value or not, if the signals exceed the safety threshold value, signals of the circuit breaker are output through the relay, if.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims (5)

1. The utility model provides a generating line electric arc light protection system, includes casing (1) and installs the inside electric arc light protection circuit board of casing (1), still install operating panel (2) on casing (1), its characterized in that, casing (1) is kept away from the one end of operating panel (2) is provided with interface structure (7), interface structure (7) externally mounted has protective cover (3), line mouth (4) are seted up to protective cover (3) both sides for insert the circuit of interface structure (7) passes through, protective cover (3) through connection structure (6) with casing (1) is connected.

2. Bus arc light protection system according to claim 1, characterized in that said connection structure (6) is an elastically telescopic structure.

3. The bus arc light protection system according to claim 2, wherein the elastic telescopic structure comprises a movable hole (11) formed in the housing (1) and a connecting rod (8) fixed on the protective cover (3), the other end of the connecting rod (8) is inserted into the movable hole (11), a limit block (10) is arranged at the end, and a spring (9) is sleeved on the outer wall of a section of the connecting rod (8) between the limit block (10) and the movable hole (11).

4. The bus arc light protection system according to claim 1, wherein the side wall of the shell (1) is provided with an access opening, and the access opening is sealed by a bolt-mounted side cover plate (5).

5. The bus arc light protection system of claim 1, wherein the arc light protection circuit board is integrated with a main control protection unit, an arc sensor interface, a zero sequence sensor interface, a relay and a circuit breaker, and the main control protection unit is used for controlling the circuit breaker to be switched on and off by collecting signals of the arc sensor and the zero sequence sensor and outputting a control signal to the relay.

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