CN209963629U

CN209963629U - Metal enclosed outlet cabinet for electric power system

Info

Publication number: CN209963629U
Application number: CN201921167624.7U
Authority: CN
Inventors: 孔保珠; 李耀辉; 郝亚冰; 谷昭建; 田彦礼
Original assignee: Hebei Wanfeng Gengtai Electrical Equipment Co Ltd
Current assignee: Hebei Wanfeng Gengtai Electrical Equipment Co Ltd
Priority date: 2019-07-24
Filing date: 2019-07-24
Publication date: 2020-01-17
Anticipated expiration: 2029-07-24

Abstract

The utility model discloses a metal-enclosed outlet cabinet for an electric power system, which comprises a cabinet body and a cabinet door, wherein the cabinet body is internally provided with an inlet wire chamber, an outlet wire chamber, a breaker chamber, an instrument chamber and a PT chamber, and a sensor is fixedly arranged on a top clapboard of the outlet wire chamber; an indicator light and an ammeter are fixedly arranged in the instrument room through a mounting panel; the cable penetrates through an insulating sleeve on the side wall of the cabinet body and extends into the wire inlet chamber, an insulator is fixedly arranged on the rear side wall of the cabinet body in the wire inlet chamber, the insulator is connected with one end of a circuit breaker through a copper bar, and the other end of the circuit breaker is connected with a wire outlet terminal at the bottom of the wire outlet chamber through a copper bar penetrating through a current transformer; the output end of the sensor is connected with the indicator light through a cable. The utility model discloses can acquire the break-make state of system's circuit through non-contact response to show through the pilot lamp in the instrument room, make things convenient for the operating condition of maintainer directly perceived master outlet cabinet.

Description

Metal enclosed outlet cabinet for electric power system

Technical Field

The utility model relates to an electric power system controlgear technical field, especially a cubical switchboard.

Background

The high-voltage switch cabinet is also called a high-voltage complete switch or a high-voltage complete distribution device, and related high-voltage and low-voltage electrical equipment, buses and the like are assembled in a closed or open metal cabinet body according to the requirements of an electrical primary main wiring diagram, and the high-voltage switch cabinet is opened, closed, controlled and protected during the power generation, power transmission, power distribution and electric energy conversion processes of an electric power system.

The outlet cabinet is one of switch cabinets, and is used for supplying power to electric equipment, and the follow-up connection or disconnection of the electric equipment is realized through the opening and closing of a breaker. Divide into inlet wire room, circuit breaker room and the room of being qualified for the next round of competitions in the cabinet of being qualified for the next round of competitions usually, but because each electrical equipment all is located the cubical switchboard, the break-make of circuit leads to the maintainer can't accurately judge the operating condition of the cabinet of being qualified for the next round of competitions from the unable direct observation of the cabinet outside of being qualified for the next round of competitions, if trade action, must have certain potential safety hazard.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that needs to solve provides a metal enclosed outgoing line cabinet for electric power system can carry out visual display to the operating condition of outgoing line cabinet, avoids the emergence of live working incident.

In order to solve the technical problem, the utility model adopts the following technical proposal.

The metal closed outgoing line cabinet for the electric power system comprises a cabinet body and a cabinet door which are assembled, wherein a line inlet chamber, a line outlet chamber and a circuit breaker chamber are arranged in the cabinet body; a current transformer for detecting system current is fixedly arranged in the inner cavity of the cabinet body between the wire inlet chamber and the wire outlet chamber; the cabinet door comprises a glass door, a breaker room door and a PT room door which are independently arranged from top to bottom, the glass door is arranged corresponding to the instrument room, the breaker room door is arranged corresponding to the breaker room, the PT room door is arranged corresponding to the inner cavity of the cabinet body below the breaker room, and an observation window is arranged on the PT room door;

a current transformer for detecting system current is fixedly arranged at the top of the outgoing line chamber, a voltage transformer is arranged in the PT chamber, and an indicator lamp and an ammeter are fixedly arranged in the instrument chamber through an installation panel; the wire outlet chamber is also internally provided with a lightning arrester vertical to the bottom plate of the cabinet body;

the cable penetrates through an insulating sleeve which is horizontally and fixedly arranged on the side wall of the cabinet body and extends into the wire inlet chamber, insulators which are perpendicular to the side wall and used for installing a bus are fixedly arranged on the rear side wall and the front side wall in the wire inlet chamber, the insulators are connected with one end of the circuit breaker through a copper bar, and the other end of the circuit breaker is connected with a wire outlet terminal at the bottom of the wire outlet chamber through the copper bar penetrating through the current transformer; the sensor is arranged opposite to the copper bar, the output end of the sensor is connected with an indicator lamp in the instrument room through a cable, and the other end of the indicator lamp is grounded; the output end of the current transformer is connected with an ammeter in the instrument room, one end of the voltage transformer is connected with a copper bar in the wire outlet room, and the other end of the voltage transformer is grounded through a lightning rod.

The metal closed outgoing line cabinet for the power system is characterized in that the sensor is an electromagnetic sensor.

Above-mentioned metal enclosed wire outgoing cabinet for electric power system, set up two sets of insulators on the back lateral wall of inlet wire room, set up a set of insulator on the preceding lateral wall of inlet wire room, become the triangle-shaped setting and satisfy the safe distance requirement between three sets of insulators.

Due to the adoption of the technical scheme, the utility model has the following technical progress.

The utility model arranges the inner chamber of the cabinet body in a separated way, ensures the safe distance between each electrical device, and improves the reliability of the system operation; through setting up the instrument room and being used for responding to the sensor of copper bar electric current, can acquire the break-make state of system's circuit through non-contact response to show through the pilot lamp in the instrument room, make things convenient for the operating condition of maintainer directly perceived master outlet cabinet. The utility model discloses can prevent that the equipment meets with the thunderbolt in the cabinet when thunderstorm weather at the indoor arrester that sets up of being qualified for the next round of competitions, play the effect of protecting cabinet body equipment, provide reliable guarantee for the steady operation of system.

Drawings

FIG. 1 is an electrical schematic diagram of the present invention;

FIG. 2 is a front view of the present invention;

fig. 3 is a schematic diagram of the internal structure of the present invention.

Wherein: 1. the intelligent cabinet comprises a cabinet body, 2 insulators, 3 breakers, 4 current transformers, 5 sensors, 6 voltage transformers, 7 lightning rods, 8 copper bars, 9 wire outlet terminals, 10 mounting panels, 12 glass doors, 13 breaker door doors and 14 PT door doors.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

A metal closed outlet cabinet for an electric power system is structurally shown in figures 2 and 3 and comprises a cabinet body 1 and a cabinet door which are assembled. The cabinet body is internally provided with a wire inlet chamber A, a wire outlet chamber B, a circuit breaker chamber C, an instrument chamber D and a PT chamber E, wherein the wire inlet chamber A is positioned at the upper part of the rear end of the cabinet body; the cabinet door includes glass door 12, circuit breaker room door 13 and PT room door 14 that top-down set up independently, and the glass door corresponds the instrument room setting, and circuit breaker room door corresponds the circuit breaker room setting, and PT room door corresponds the cabinet body inner chamber setting of circuit breaker room below, is provided with the observation window on the PT room door.

The insulator is fixedly arranged on the front side wall and the rear side wall in the wire inlet chamber and is perpendicular to the side walls, and the insulator is used for connecting a cable and a copper bar and conducting insulation positioning on a connecting point. In this embodiment, two sets of insulators are arranged on the rear side wall of the wire inlet chamber, a set of insulators is arranged on the front side wall of the wire inlet chamber, and the three sets of insulators are arranged in a triangular shape and meet the requirement of safety distance.

The current transformer 4 is arranged in the inner cavity of the cabinet body between the wire inlet chamber and the wire outlet chamber and is used for detecting system current; and a sensor 5 is fixedly arranged on the partition plate at the top of the wire outlet chamber, is arranged opposite to the copper bar in the wire outlet chamber and is used for sensing the current passing through the copper bar, and adopts an electromagnetic sensor.

An indicator light and an ammeter are fixedly arranged in the instrument room through the mounting panel 10. The ammeter is used for indicating the system current value, and the pilot lamp is used for indicating the break-make electrician operating condition of line cabinet.

And a voltage transformer 6 is arranged in the PT chamber and used for detecting the terminal voltage of the wire outlet.

The wire outlet chamber is also internally provided with a lightning arrester 7 perpendicular to the bottom plate of the cabinet body, and the lightning arrester can prevent equipment in the cabinet from being struck by lightning in thunderstorm weather, thereby playing a role in protecting the equipment of the cabinet body and providing reliable guarantee for the stable operation of the system.

The electrical principle of the utility model is as shown in figure 1, specifically: the cable penetrates through an insulating sleeve which is horizontally and fixedly arranged on the side wall of the cabinet body and extends into an insulator in the wire inlet chamber, the insulator is connected with one end of the circuit breaker 3 through a copper bar, and the other end of the circuit breaker 3 is connected onto a wire outlet terminal 9 at the bottom of the wire outlet chamber through the copper bar penetrating through the current transformer; the output end of the sensor positioned in the detection chamber is connected with an indicator lamp in the instrument chamber through a cable, and the other end of the indicator lamp is grounded; the output end of the current transformer is connected with an ammeter in the instrument room; one end of the voltage transformer is connected with the copper bar in the wire outlet chamber, and the other end of the voltage transformer is grounded through the lightning rod.

The utility model discloses a theory of operation does: when the circuit breaker of the outgoing line cabinet is closed, the system line is connected, current passes through the copper bar, and the induction type measurement is carried out outside the safe distance by utilizing the electric field coupling principle between the sensor and the high-voltage alternating electric field. The sensor generates an alternating current signal under the action of a high-voltage alternating electric field, the induced current signal is transmitted to the indicator lamp through the cable, the other end of the indicator lamp is grounded, and when the indicator lamp is connected with one end of the sensor to input current, the indicator lamp is lightened to indicate that the switch cabinet is in a working state. When the circuit breaker is disconnected, the system line is disconnected, no current flows through the copper bar, the sensor does not output signals, and the indicator light is turned off. The maintainer sees through the glass door, can learn the operating condition of cabinet of being qualified for the next round of competitions through the state of lighting of observing the pilot lamp, provides reliable assurance for its work safety.

Claims

1. Metal-enclosed outgoing line cabinet for electric power system, including the cabinet body (1) and the cabinet door of joining in marriage the dress mutually, the internal inlet wire room (A), the room (B) and the circuit breaker room (C) of being qualified for the next round of competitions that are provided with of cabinet, its characterized in that: the upper part of the front end of the cabinet body is also provided with an instrument room (D), the lower part of the front end of the cabinet body is also provided with a PT room (E), the wire inlet room (A) is positioned at the upper part of the rear end of the cabinet body, the wire outlet room (B) is positioned at the lower part of the rear end of the cabinet body, and the circuit breaker room (C) is arranged in the middle of the front end of the cabinet body; a current transformer for detecting system current is fixedly arranged in the inner cavity of the cabinet body between the wire inlet chamber and the wire outlet chamber; the cabinet door comprises a glass door (12), a breaker room door (13) and a PT room door (14) which are independently arranged from top to bottom, the glass door is arranged corresponding to the instrument room, the breaker room door is arranged corresponding to the breaker room, the PT room door is arranged corresponding to the PT room, and an observation window is arranged on the PT room door;

a sensor (5) for inducing the current in the copper bar to pass through is fixedly arranged on a partition plate at the top of the wire outlet chamber, a voltage transformer (6) is arranged in the PT chamber (E), an indicator lamp and an ammeter are fixedly arranged in the instrument chamber through a mounting panel (10), and a lightning arrester (7) perpendicular to a bottom plate of the cabinet body is also arranged in the wire outlet chamber;

the cable penetrates through an insulating sleeve which is horizontally and fixedly arranged on the side wall of the cabinet body and extends into the wire inlet chamber, an insulator (2) which is perpendicular to the side wall and used for installing a bus is fixedly arranged on the rear side wall and the front side wall in the wire inlet chamber, the insulator is connected with one end of a breaker (3) through a copper bar, and the other end of the breaker (3) is connected onto a wire outlet terminal (9) at the bottom of the wire outlet chamber through the copper bar which is arranged on a current transformer in a penetrating mode; the sensor is arranged opposite to the copper bar, the output end of the sensor is connected with an indicator lamp in the instrument room through a cable, and the other end of the indicator lamp is grounded; the output end of the current transformer is connected with an ammeter in the instrument room, one end of the voltage transformer is connected with a copper bar in the wire outlet room, and the other end of the voltage transformer is grounded through a lightning rod.

2. The metal-enclosed outlet cabinet for power systems of claim 1, wherein: the sensor is an electromagnetic sensor.

3. The metal-enclosed outlet cabinet for power systems of claim 1, wherein: two sets of insulators are arranged on the rear side wall of the wire inlet chamber, a set of insulators are arranged on the front side wall of the wire inlet chamber, and the three sets of insulators are arranged in a triangular mode and meet the requirement of safety distance.