CN103326250B - Integrated ring main unit electric controller - Google Patents

Abstract

The invention discloses an electric controller for an integrated ring network cabinet. The electric controller is an integrated sealing device, and a circuit board is arranged inside the electric controller. On the circuit board, a control closing relay, a control opening relay, and a rectifier bridge are arranged. , intermediate relay, energy storage relay, one side of the circuit board is equipped with electrical connectors. The back of the circuit board is the solder leg side of the electrical components, and this side is painted with conformal paint. The front of the electric controller is provided with a closing indication switch, an opening indication switch, an energy storage state indication switch, an operating button for switching between closing and opening, and a remote and local switching operation button. The DC large load circuit of the electric controller is equipped with a relay for breaking, and the relay for breaking is an AC relay, and the AC relay is provided with multiple fractures connected in series. The integrated circuit board is used to replace the traditional wire connection to realize the electric control of the switch operating mechanism of the ring network cabinet, which reduces the size of the equipment and more easily meets the development needs of the miniaturization of the outdoor ring network cabinet.

Description

Integrated ring network cabinet electric controller

technical field

The invention relates to an integrated ring network cabinet component, in particular to an integrated ring network cabinet electric controller.

Background technique

In the electric operation control of the ring network cabinet, the operating power supply is divided into two types: AC and DC. Among them, DC operating voltages are commonly used in several voltage levels such as DC24V, DC48V, DC110V, and DC220V. The load current required by the spring compression motor of the conventional high-voltage switch operating mechanism and the tripping coil can be as high as 10A. Since the direct current has no zero-crossing point, the prior art of breaking the direct current high voltage and high current can only be realized by wiring with bulky direct current contactors. With the development of outdoor ring network cabinets towards miniaturization, full insulation, and maintenance-free, the currently widely used electric operation control method that relies solely on secondary wiring switches can only be used for one-time equipment due to the large size of the components used and the scattered installation of components. On-site assembly, manual wiring progress is slow, error rate is high, secondary indoor components are exposed, it is difficult to achieve non-fully insulated and fully sealed, and the disadvantages of being incompatible with the environmental conditions of the outdoor place where the ring main unit operates are increasingly apparent.

Contents of the invention

The purpose of the present invention is to provide a miniaturized, fully sealed and fully insulated integrated ring network cabinet electric controller.

The purpose of the present invention is achieved through the following technical solutions:

In the electric controller of the integrated ring network cabinet of the present invention, the electric controller is an integrated sealing device, a circuit board is arranged inside the electric controller, and a closing relay and a switching relay are arranged on the circuit board. , a rectifier bridge, an intermediate relay, and an energy storage relay, one side of the circuit board is provided with an electrical connector.

It can be seen from the above-mentioned technical solutions provided by the present invention that in the electric controller of the integrated ring network cabinet provided by the embodiment of the present invention, the electric controller is an integrated sealing device, and a circuit board is arranged inside the electric controller. The circuit board is equipped with a control closing relay, a control opening relay, a rectifier bridge, an intermediate relay, and an energy storage relay. One side of the circuit board is provided with an electrical connector. The integrated controller mode reduces the size of the equipment , It is easier to meet the development needs of the miniaturization of outdoor ring network cabinets.

Description of drawings

Fig. 1 is the schematic diagram of the front structure of the electric controller of the integrated ring network cabinet provided by the embodiment of the present invention;

Figure 2 is a schematic diagram of the internal circuit board layout of the electric controller of the integrated ring network cabinet provided by the embodiment of the present invention;

Fig. 3 is a schematic diagram of the circuit principle of the electric controller of the integrated ring main unit provided by the embodiment of the present invention.

In the figure: 1. Closing indicator switch, 2. Opening indicator switch, 3. Energy storage status indicator switch, 4. Closing and opening switching operation button, 5. Remote and local switching operation button, 6. Control closing Brake relay, 7, control opening relay, 8, rectifier bridge, 9, intermediate relay, 10, energy storage relay, 11, electrical connector, 12, is provided with the alternating current relay of 2 mutually serially connected fractures.

detailed description

The embodiments of the present invention will be further described in detail below.

The electric controller of the integrated ring main unit of the present invention, its preferred specific implementation mode is:

The electric controller is an integrated sealed device, the electric controller is provided with a circuit board, and the circuit board is arranged with a control closing relay, a control opening relay, a rectifier bridge, an intermediate relay, and an energy storage relay. One side of the circuit board is provided with electrical connectors.

The back side of the circuit board is the solder leg side of the electrical component, and the side is painted with conformal paint.

The front of the electric controller is provided with a closing indicator switch, an opening indicator switch, an energy storage state indicator switch, an operating button for switching between closing and opening, and an operating button for switching between remote and local.

The DC large load circuit of the electric controller is provided with a relay for breaking, and the relay for breaking is an AC relay, and the AC relay is provided with a plurality of fractures connected in series.

The AC relay is provided with two fractures connected in series.

The invention adopts the integrated circuit board to replace the traditional wire connection to realize the electric control of the switch operating mechanism of the ring network cabinet.

Specific examples:

As shown in Figure 1, Figure 2, and Figure 3, a circuit board circuit layout suitable for higher withstand voltage is designed for the control circuit of the operating mechanism, and a special miniaturized high-power electromagnetic relay is used as the driving element, and each contact of the relay is The pins are soldered directly to the circuit board. In order to solve the problem that the small size is not easy to break caused by the high DC voltage and high current of the secondary operating power supply of the power system, the relay that plays the role of breaking in the DC large load circuit is realized by connecting multiple fractures in series, and the expected effect is achieved. The arc extinguishing effect has successfully realized the cutting off of the DC load by the AC relay.

Since the present invention is mainly used for opening and closing control of small open and fully insulated outdoor switchgears such as 10KV ring network cabinets, the controller itself is also improved with full protection technology, and the exposed parts of the welding pins of all welding components on the circuit board Apply three-proof paint on all sides. This method ensures that all metal live parts are isolated from the air, and short circuits between live conductors and between conductors and ground are not easy to occur in extremely humid outdoor climates.

The electrical connection between the electric controller and the motor, coil and other components on the switch mechanism body is uniformly connected by a sealed electrical connector. The miniaturized controller designed in this way is a brand-new prefabricated control "module", which successfully liberates the original secondary operation control system control element of the main switch of the ring main unit from the backward status quo of the original low-voltage interval on-site assembly As an independent component, the electric controller saves the installation space of the secondary room for the ring network cabinet due to its miniaturization; due to its own overall sealing treatment, it gets rid of a large number of electrical contacts such as secondary wires and terminal blocks. It is directly exposed to various harsh outdoor air environments, and it is prone to the dilemma of discharge short circuit. Due to the relatively uniform electrical principle of the switch operating mechanism, the independent electric controller can be prefabricated as an independent component prior to the production of the low-voltage chamber of the ring network cabinet, which improves the product of the ring network cabinet according to the user's order. , The modular prefabrication of components can effectively reduce the assembly workload of the ring main unit and shorten the overall delivery cycle of the product.

The beneficial effects brought by the technical solution of the present invention:

1. The integrated controller mode reduces the size of the equipment, and it is easier to meet the development needs of the miniaturization of the outdoor ring network cabinet.

2. Compared with traditional manual wiring in mass production, printed circuit boards produced by machine automation have faster speed and fewer wiring errors, saving time and labor costs from the perspective of production.

3. The integrated design of the controller has changed the complex procedure of checking the lines one by one on the spot where there is a problem, finding and eliminating component faults. The fault can be repaired by simply inserting the new control module on site, which effectively shortens the repair time of the control circuit fault. .

4. The full insulation design in the outdoor environment can better adapt to the influence of the outdoor humid environment and improve the trouble-free running time of the ring network cabinet.

5. Through the multi-fracture breaking design, one device can realize all voltage levels and full breaking capacity; through the multi-interface redundant design of the output interface, such as multi-opening, closing, and energy storage motors, it can realize multiple cabinets for circuit breakers and load switches. Breaking of type ring network switchgear. So as to realize one machine with multiple functions.

The above is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person familiar with the technical field can easily conceive of changes or changes within the technical scope disclosed in the present invention. Replacement should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be determined by the protection scope of the claims.

Claims (2)

1. an integrated ring main unit electric controller, it is characterized in that, described electric controller is integrated air locking, circuit board is provided with in described electric controller, described circuit board is furnished with and controls closing relay, control separating brake relay, rectifier bridge, auxiliary relay, energy storage relay, the side of described circuit board is provided with electric connector;

The front of described electric controller is provided with combined floodgate indicator cock, separating brake indicator cock, energy storage state indicator cock, close a floodgate and separating brake handover operation button, a distant place and handover operation button on the spot;

Be provided with the relay of disjunction effect in the direct current heavy load circuit of described electric controller, the described relay playing disjunction effect adopts AC relay, and described AC relay is provided with 2 fractures be mutually connected in series.

2. integrated ring main unit electric controller according to claim 1, is characterized in that, the back side of described circuit board is electric component leg side, the anti-paint of this side brush three.