CN105098646B - Indoor intelligent 10kV boundary circuit breaker switch cabinet with communication function - Google Patents

Abstract

The invention provides an indoor intelligent 10kV demarcation circuit breaker switch cabinet with a communication function, which comprises: the intelligent monitoring cabinet comprises a cabinet body, wherein an intelligent monitoring unit is arranged at the upper end of the front side of the cabinet body, and an incoming line side bus connecting unit and an outgoing line side demarcation circuit breaker unit are arranged at the lower end of the front side of the cabinet body. The invention has the boundary short-circuit function of quickly cutting off the 10KV main network T connection when a fault occurs at the incoming line side of a user, thereby reducing the power failure area; the communication and uploading of the data information function of the master station is convenient for quickly positioning the position of a fault point, shortening the power failure time and quickly recovering power supply; the current measurement is realized by protecting CT, and can accurately display various data and memorize and inquire historical operating parameters; meanwhile, the on-column (outdoor) boundary circuit breaker is completely replaced, floor type installation is adopted, and the maintenance is convenient; the air box is provided with a ventilation heating system, and three main parts of a breaker, a disconnecting switch and a grounding switch are integrated in the air box, so that the volume is small, the material is saved, and the manufacturing difficulty and the cost are reduced.

Description

An indoor intelligent 10kV demarcation circuit breaker switchgear with communication function

technical field

The invention relates to the technical field of a boundary circuit breaker switchgear, in particular to an indoor intelligent 10kV boundary circuit breaker switchgear with a communication function.

Background technique

Traditional boundary circuit breakers (commonly known as watchdogs) are generally column-mounted. The power supply installer needs to climb up the high-voltage pole, first install the bracket, hoist the switch on the pole, the external high-voltage transformer, the boundary controller, and connect the wires. The process is cumbersome, and it takes a long time to work at heights, and it is very difficult to climb up and down for later maintenance.

The boundary circuit breaker is a multi-functional intelligent device product that integrates a disconnecting switch, a vacuum circuit breaker, and a boundary circuit breaker controller. Widely used in 10kV urban and rural distribution network overhead ring network lines, used as breaking isolating switch, contact switch, automatic switch device that can implement load allocation of ring network lines; it can be used as a boundary switch in branch lines powered by large users, The feeder overhead distribution network is used as a boundary circuit breaker sectionalizer, which is convenient for line section inspection and maintenance. The vacuum boundary circuit breaker has remote management mode, protection control function and communication function. It can reliably judge and detect milliampere-level zero-sequence current and phase-to-phase short-circuit fault current, and realize automatic removal of single-phase ground fault and phase-to-phase short-circuit fault.

There is a possibility of failure inside the user connected to the T of the 10kV cable line. Faults sometimes occur at the user's incoming line end or inside the user's incoming line. When the relay protection action time limit of the user's power distribution equipment does not match the relay protection action time limit of the power supply company's outgoing line switch, it will cause the outgoing line switch of the superior substation to trip over the level. Often a user's failure will lead to a power outage of the entire transmission line, resulting in immeasurable economic losses.

Contents of the invention

The technical problem solved by the present invention is to provide an indoor intelligent 10kV boundary circuit breaker switchgear with communication function, so as to solve the problems in the background technology above.

The technical problem solved by the present invention is realized by the following technical solutions: an indoor intelligent 10kV boundary circuit breaker switchgear with communication function, including: The lower end of the front side of the body is provided with a bus connection unit on the incoming line side and a demarcation circuit breaker unit on the outgoing line side. The intelligent monitoring unit is equipped with an intelligent control room with communication function. There is a pressure relief channel space on the rear side of the intelligent monitoring unit. On the lower side of the intelligent monitoring unit, there is a busbar connection unit on the incoming line side and on the right side a demarcation circuit breaker unit on the outgoing line side. An air pressure gauge, a fault indicator, and an electrification display at the incoming line end are installed in front of the middle end of the incoming line side bus connection unit. There is an incoming cable room and a surge arrester room in front of the lower end, and a PT unit chamber on the incoming line side is reserved behind the lower end. A current transformer CT can be installed on the incoming line cable, and the primary circuit at the incoming line end is connected to the live display at the incoming line end through a sensor. The middle end of the boundary circuit breaker unit on the outlet side adopts an air box to weld the main body of the boundary circuit breaker unit, and a boundary circuit breaker, an isolating switch, and a grounding switch are arranged in sequence from top to bottom; There is a pressure relief channel in the cable room. The lower end of the cable room is connected to the pressure relief channel. In front of the lower end, there is an outgoing cable room and a lightning arrester room. A current transformer CT can be installed on the outgoing cable. The primary circuit of the outgoing line passes through the sensor. connect.

The communication function intelligent control room is equipped with an intelligent monitoring unit module, an indicator light, a GPRS communication module and a multi-function meter.

The indicator lights include an opening indicator light, a closing indicator light, and a lighting switch indicator light.

Compared with the disclosed technology, the present invention has the following advantages: the present invention has the function of quickly cutting off the boundary short circuit of the T connection of the 10KV main network when a fault occurs on the incoming line side of the user, and reduces the power failure area; the function of communicating and uploading the data information of the main station is convenient for rapid positioning The location of the fault point shortens the power failure time and restores the power supply quickly; it also has a complete and powerful collection function of the user network, which can accurately display various data and memorize and query historical operating parameters; It has its own ventilation and heating system, which has the functions of moisture-proof, mildew-proof, anti-aging, and anti-flashover; the air box integrates three main parts: circuit breaker, disconnector, and grounding switch, which are small in size, save materials, and reduce manufacturing difficulty and cost.

Description of drawings

Figure 1 is a schematic front view of the present invention.

Fig. 2 is a schematic side view of the outlet-side demarcation circuit breaker unit of the present invention.

Fig. 3 is a schematic side view of the incoming side bus connection unit of the present invention.

Detailed ways

In order to make it easy to understand the technical means, creative features, work flow, and use methods of the present invention to achieve the purpose and effect, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the The described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

As shown in Figure 1, Figure 2, and Figure 3, an indoor intelligent 10kV boundary circuit breaker switchgear with communication function includes: a cabinet body 1, and an intelligent monitoring unit 2 is provided at the upper front side of the cabinet body 1, The lower end of the front side of the cabinet body 1 is provided with a bus connection unit 7 on the incoming line side and a boundary circuit breaker unit 8 on the outgoing line side. An indicator light 15 is installed on the intelligent monitoring unit 2, and a cable room pressure relief channel 19 and A pressure relief space 18, an intelligent control room 17 with a communication function is installed on one side of the intelligent monitoring unit 2, a fault indicator 4 and a live display 5 at the incoming line end are installed on the lower side of the intelligent monitoring unit 2, and the primary circuit at the outgoing line end passes through the circuit breaker 12, The isolating switch 11 is connected to the grounding switch 10, and the grounding switch 10 is connected with the charging indicator 9 at the outgoing line end; the rear side of the outgoing line side demarcation circuit breaker unit 8 is provided with an incoming and outgoing line and a lightning arrester chamber 20, and the incoming and outgoing lines and the lightning arrester chamber 20 are on the upper side There is a cable plug 21 on one side, and a demarcation circuit breaker unit 22 is provided on the upper side of the cable plug 21. One side of the demarcation circuit breaker unit 22 is provided with an operating mechanism chamber 16, and the other side is provided with a cable chamber pressure relief channel 19. The cable chamber pressure relief The upper end of the channel 19 communicates with the pressure relief space 18 .

The indicator lights 15 include an opening indicator light, a closing indicator light, and a lighting switch indicator light.

A multi-function meter 14 and a GPRS communication module 13 are installed in the communication function intelligent control room 17 .

The present invention not only has the boundary short-circuit function of quickly cutting off the T-connection of the 10KV main network when a fault occurs on the user’s incoming line side, reducing the power outage area; the function of communicating and uploading the data information of the main station is convenient for quickly locating the location of the fault point, shortening the time of power failure, and quickly restoring power supply; It also has the complete and powerful acquisition function of the user network, and the current measurement is realized through the protection CT, which can accurately display various data and memorize and query historical operating parameters;

At the same time, it completely replaces the pole-mounted (outdoor) demarcation circuit breaker, adopts floor-mounted installation, and is convenient for maintenance; the air box also has its own ventilation and heating system, which has the functions of moisture-proof, mildew-proof, anti-aging, and anti-flashover; the air box is integrated with a circuit breaker The three main parts of the device, the isolating switch and the grounding switch are small in size, saving materials, reducing manufacturing difficulty and cost.

In addition, the intelligent boundary circuit breaker cabinet of the present invention can be pre-installed in the American-style box transformer in the factory, without the need for power supply installers to climb up and install it, and the later maintenance becomes extremely simple and easy.

The basic principles, main features and advantages of the present invention have been shown and described above. Those skilled in the industry should understand that the present invention is not limited by the above-mentioned embodiments. What are described in the above-mentioned embodiments and the description only illustrate the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will also have Variations and improvements are possible, which fall within the scope of the claimed invention. The claimed scope of the present invention is defined by the appended claims and their equivalents.

Claims (1)

1. An indoor intelligent 10kV demarcation circuit breaker switchgear with communication function, comprising: a cabinet body, an intelligent monitoring unit is provided at the upper end of the front side of the cabinet body, and an incoming-side bus connection unit is provided at the lower end of the front side of the cabinet body , Outlet side demarcation circuit breaker unit, the intelligent monitoring unit is equipped with an intelligent control room with communication function, the rear side of the intelligent monitoring unit is provided with a pressure relief channel space, the lower side of the intelligent monitoring unit is provided with the incoming bus connection unit on the left side, and the right side is provided There is a demarcation circuit breaker unit on the outgoing line side, and the front of the middle end of the incoming line side bus connection unit is equipped with a barometer, a fault indicator, and a live display at the incoming line end. The PT unit cell on the incoming line side, the current transformer CT is installed on the incoming line cable, the primary circuit at the incoming line end is connected with the live display at the incoming line end through a sensor, and the middle end of the outgoing line side demarcation circuit breaker unit adopts a gas box welding demarcation circuit breaker The main body of the unit is provided with a demarcation circuit breaker, an isolating switch, and a grounding switch in sequence from top to bottom; an operating mechanism room is provided in front of the middle end, and a cable room pressure relief channel is provided at the rear of the middle end, and the lower end of the cable room is connected to a pressure relief channel. There is an outlet cable room and a lightning arrester room in front of the lower end, and a current transformer CT is installed on the outlet cable, and the primary circuit of the outlet end is connected with the live display at the outlet end through a sensor; the communication function intelligent control room is equipped with an intelligent monitoring unit module and an indicator light , a GPRS communication module, a multi-function meter; the indicator lights include an opening indicator light, a closing indicator light, and a lighting switch indicator light.