CN202737350U

CN202737350U - Digital monitoring intelligentized power distribution cabinet

Info

Publication number: CN202737350U
Application number: CN 201220405627
Authority: CN
Inventors: 李振玺
Original assignee: YINCHUAN LIHENG ELECTRIC EQUIPMENT CO Ltd
Current assignee: YINCHUAN LIHENG ELECTRIC EQUIPMENT CO Ltd
Priority date: 2012-08-16
Filing date: 2012-08-16
Publication date: 2013-02-13
Anticipated expiration: 2022-08-16

Abstract

A digital monitoring intelligentized power distribution cabinet is provided. The cabinet body is internally provided with a current transformer, a zero sequence current transformer, a power-factor compensator, a programmable logic controller, a data acquisition module, a temperature sensor and a memory, wherein heat dissipation air ducts are disposed on the inner wall of the cabinet body; blowers are disposed in the heat dissipation air ducts; control output ends of the programmable logic controller are correspondingly connected to a breaker, an on/off circuit of a contactor, the blowers in the heat dissipation air ducts, the power-factor compensator, and the data acquisition module; and the data acquisition module is connected to the current transformer, the zero sequence current transformer, and the temperature sensor, such that the programmable logic controller is used to perform vector calculation, analysis and processing in real time, finish fault diagnosis analysis, output values of power consumption, power factor, current and the like, control the switching of a compensation device, perform on-screen display and data recording, detect the temperature in the cabinet, and switch on the blowers in the heat dissipation air ducts for heat dissipation when the temperature exceeds a preset value, thereby realizing intelligentized monitoring and management of the power distribution cabinet.

Description

The digital supervision Intelligent distributing box

Technical field:

The utility model relates to the power supply technique field, particularly a kind of digital supervision Intelligent distributing box.

Background technology:

Power distribution cabinet generally is to be made of cabinet, bus, circuit breaker, contactor, and the electric energy that is derived from electrical network is sent to the power distribution cabinet input by bus, sends terminate load to by circuit breaker, device for switching, protector and cable.Circuit breaker also has short-circuit protection, overload long delay protection, isolation and safety protection function except basic current switching function is arranged; But contactor is mainly used in frequent the connection or disjunction main circuit and remote operation; Protector generally adopts thermal relay or motor protector; thermal relay is the heat that utilizes electric current that the loop passes through to produce; cause thermal element generation mechanical deformation; control circuit disconnects; realize overload protection; the reply of traditional thermal relay requires to exist that sensitivity is low, error large, poor stability with modern control, protect insecure shortcoming.

Although power distribution cabinet has also increased the contact no-power compensation function and has installed transformer terminal unit additional at present, but also there is following shortcoming: because the contactor in the reactive compensation system is as fling-cut switch, generate heat many, power consumption is large, spin manifold temperature easily raises, contactor is fragile, and because the temperature in the cupboard raises, the transformer terminal unit, the control device that install additional are fragile; Can not be automatically to power consumption equipment failure diagnosis and real-time guard, power factor detection and electric-power metering.

Summary of the invention:

The purpose of this utility model is: the digital supervision that a kind of energy consumption is little, variations in temperature is little, volume is little and reliability is high Intelligent distributing box is provided.

A kind of digital supervision Intelligent distributing box, comprise cabinet, outside cabinet, penetrate input terminal and outlet terminal the cabinet, be arranged in the cabinet and be connected on successively circuit breaker between input terminal and the outlet terminal, contactor, current transformer, zero sequence current mutual inductor, power-factor compensator, be provided with heat dissipation wind channel on the inwall of cabinet, blower fan is housed in the heat dissipation wind channel, the digital supervision Intelligent distributing box also comprises the Programmable Logic Controller that is installed in the cabinet, data acquisition module, temperature sensor, memory, the control output end of Programmable Logic Controller corresponding and circuit breaker, opening/closed circuit of contactor, blower fan in the heat dissipation wind channel, power-factor compensator, data acquisition module connects, data acquisition module also with current transformer, zero sequence current mutual inductor, temperature sensor connects.Power-factor compensator also is connected with outlet terminal.

Preferably, be provided with the molding bed of material on chip on the cabinet outer surface.

Preferably, wherein heat dissipation wind channel can form in the following manner, sidewall in cabinet is installed cold plate, the space of installing between the sidewall in cold plate and the cabinet forms heat dissipation wind channel, wherein cold plate comprises loading plate and is installed in thermoelectric semiconductor cooling assembly on the loading plate, and the element in the chill surface Facing Digital monitoring intelligent power distribution cabinet of cold plate, the thermoelectric semiconductor cooling assembly is connected with Programmable Logic Controller.

Above-mentioned digital supervision Intelligent distributing box, current transformer is installed in cabinet, zero sequence current mutual inductor, power-factor compensator, Programmable Logic Controller, data acquisition module, temperature sensor, memory, be provided with heat dissipation wind channel on the inwall of cabinet, blower fan is housed in the heat dissipation wind channel, the control output end of Programmable Logic Controller corresponding and circuit breaker, opening/closed circuit of contactor, blower fan in the heat dissipation wind channel, power-factor compensator connects, data acquisition module and current transformer, zero sequence current mutual inductor, temperature sensor connects, power-factor compensator also is connected with outlet terminal, so carrying out in real time vector by Programmable Logic Controller calculates, analyze and process, finish Analysis on Fault Diagnosis, the output power consumption, power factor, the values such as electric current, calculate simultaneously the power consumption of taking advantage of a situation in loop, the accumulative total electric weight, the control and compensation device is cut throwing, adjust this circuit power factor, and carry out that the scene shows and data record, simultaneously to the temperature examinations in the cabinet, when temperature surpasses predetermined value, the blower fan of connecting in the heat dissipation wind channel dispels the heat, realize digital monitoring and the management of power distribution cabinet, and it is little to reach energy consumption, variations in temperature is little, the requirement that volume is little and reliability is high.

Description of drawings:

Fig. 1 is the structural representation of the digital supervision Intelligent distributing box of a better embodiment.

Fig. 2 is the cold plate structural representation in the digital supervision Intelligent distributing box among Fig. 1.

Among the figure: digital supervision Intelligent distributing box 10, cabinet 11, heat dissipation wind channel 111, blower fan 112, the molding bed of material 113 on chip, input terminal 12, outlet terminal 13, circuit breaker 14, contactor 15, current transformer 16, zero sequence current mutual inductor 17, power-factor compensator 18, Programmable Logic Controller 20, data acquisition module 21, temperature sensor 22, memory 23, cold plate 30, loading plate 31, thermoelectric semiconductor cooling assembly 32

Embodiment:

Please be simultaneously referring to Fig. 1, digital supervision Intelligent distributing box 10 comprise cabinet 11, from cabinet 11 outsides penetrate input terminal 12 and outlet terminal 13 cabinet 11, be arranged in the cabinet 11 and be connected on successively input terminal 12 and outlet terminal 13 between circuit breaker 14, contactor 15, current transformer 16, zero sequence current mutual inductor 17, power-factor compensator 18, be provided with heat dissipation wind channel 111 on the inwall of cabinet 11, blower fan 112 is housed in the heat dissipation wind channel 111.Digital supervision Intelligent distributing box 10 also comprises Programmable Logic Controller 20, data acquisition module 21, temperature sensor 22, the memory 23 that is installed in the cabinet 11.Corresponding blower fan 112, power-factor compensator 18, the data acquisition module 21 with in the opening of circuit breaker 14, contactor 15/closed circuit, the heat dissipation wind channel 111 in the control output end of Programmable Logic Controller 20 is connected, and data acquisition module 21 is connected with current transformer 16, zero sequence current mutual inductor 17, temperature sensor 22.Power-factor compensator 18 also is connected with outlet terminal 13.

In the present embodiment, be provided with the molding bed of material 113 on chip on cabinet 11 outer surfaces; Heat dissipation wind channel 111 can form in the following manner: the sidewall in cabinet 11 is installed cold plate 30, the space of installing between the sidewall in cold plate 30 and the cabinet 11 forms heat dissipation wind channel 111, wherein cold plate 30 comprises loading plate 31 and is installed in thermoelectric semiconductor cooling assembly 32 on the loading plate 31, and the element in the chill surface Facing Digital monitoring intelligent power distribution cabinet 11 of cold plate 30, thermoelectric semiconductor cooling assembly 32 is connected with Programmable Logic Controller 20.

Above-mentioned digital supervision Intelligent distributing box 10, current transformer 16 is installed in cabinet 11, zero sequence current mutual inductor 17, power-factor compensator 18, Programmable Logic Controller 20, data acquisition module 21, temperature sensor 22, memory 23, be provided with heat dissipation wind channel 111 on the inwall of cabinet 11, blower fan 112 is housed in the heat dissipation wind channel 111, the control output end of Programmable Logic Controller 20 corresponding with circuit breaker 14, opening/closed circuit of contactor 15, blower fan 112 in the heat dissipation wind channel 111, power-factor compensator 18 connects, data acquisition module 21 and current transformer 16, zero sequence current mutual inductor 17, temperature sensor 22 connects, power-factor compensator 18 also is connected with outlet terminal 13, so carrying out in real time vector by Programmable Logic Controller 20 calculates, analyze and process, finish Analysis on Fault Diagnosis, the output power consumption, power factor, the values such as electric current, calculate simultaneously the power consumption of taking advantage of a situation in loop, the accumulative total electric weight, the control and compensation device is cut throwing, adjust this circuit power factor, and carry out that the scene shows and data record, simultaneously to the temperature examinations in the cabinet, when temperature surpasses predetermined value, the blower fan 112 of connecting in the heat dissipation wind channel 111 dispels the heat, realize digital monitoring and the management of power distribution cabinet, and it is little to reach energy consumption, variations in temperature is little, the requirement that volume is little and reliability is high.

Claims

1. digital supervision Intelligent distributing box, it is characterized in that: comprise cabinet, outside cabinet, penetrate input terminal and outlet terminal the cabinet, be arranged in the cabinet and be connected on successively circuit breaker between input terminal and the outlet terminal, contactor, current transformer, zero sequence current mutual inductor, power-factor compensator, be provided with heat dissipation wind channel on the inwall of cabinet, blower fan is housed in the heat dissipation wind channel, the digital supervision Intelligent distributing box also comprises the Programmable Logic Controller that is installed in the cabinet, data acquisition module, temperature sensor, memory, the control output end of Programmable Logic Controller corresponding and circuit breaker, opening/closed circuit of contactor, blower fan in the heat dissipation wind channel, power-factor compensator, data acquisition module connects, data acquisition module also with current transformer, zero sequence current mutual inductor, temperature sensor connects; Power-factor compensator also is connected with outlet terminal.

2. digital supervision Intelligent distributing box as claimed in claim 1 is characterized in that: be provided with the molding bed of material on chip on the cabinet outer surface.

3. digital supervision Intelligent distributing box as claimed in claim 1, it is characterized in that: wherein heat dissipation wind channel can form in the following manner, sidewall in cabinet is installed cold plate, the space of installing between the sidewall in cold plate and the cabinet forms heat dissipation wind channel, wherein cold plate comprises loading plate and is installed in thermoelectric semiconductor cooling assembly on the loading plate, and the element in the chill surface Facing Digital monitoring intelligent power distribution cabinet of cold plate, the thermoelectric semiconductor cooling assembly is connected with Programmable Logic Controller.