CN201838996U

CN201838996U - Intelligent controller for breaker with plastic shell

Info

Publication number: CN201838996U
Application number: CN2010202091765U
Authority: CN
Inventors: 袁玉鹏; 程秀光; 张健; 毛巨川; 龙继芳; 李浩沛; 凡永华; 李果; 张彬
Original assignee: JIANGNAN ELECTROMECHANICAL DESIGN RESEARCH INSTITUTE
Current assignee: JIANGNAN ELECTROMECHANICAL DESIGN RESEARCH INSTITUTE
Priority date: 2010-05-31
Filing date: 2010-05-31
Publication date: 2011-05-18
Anticipated expiration: 2020-05-31

Abstract

The utility model discloses an intelligent controller for a breaker with a plastic shell, which belongs to the field of low voltage distribution protection, has functions of grounding protection and communication networking, and consists of a microprocessor circuit (1), a dial setting circuit (2), a state indicating circuit (3), a modbus communication interface circuit (4), a trip driving control circuit (5), a grounding channel signal conditioning circuit (8), a four-phase channel signal conditioning circuit (9), a mutual inductor (10) correspondingly connected with each channel signal conditioning circuit (9), a self-generated power supply circuit (7) and a test trip power supply circuit (6), wherein the dial setting circuit (2), the state indicating circuit (3), the modbus communication interface circuit (4), the trip driving control circuit (5), the grounding channel signal conditioning circuit (8), the four-phase channel signal conditioning circuit (9) are connected with the microprocessor circuit (1), the self-generated power supply circuit (7) and the test trip power supply circuit (6) are connected with the trip driving control circuit (5), and the self-generated power supply circuit (7) is connected with each channel signal conditioning circuit (9). The intelligent controller for the breaker with the plastic shell not only has the functions of overload protection, short circuit protection, grounding protection and the like, but also can realize operations of remote test, remote regulating, remote communication and the like with an upper computer unit net.

Description

The breaker of plastic casing intelligent controller

Technical field: the utility model relates to a kind of intelligent controller, relates in particular to a kind of breaker of plastic casing intelligent controller.

Background technology: at present, breaker of plastic casing generally adopts the Thermomagnetic type controller, and the protection precision is low, is not easy to adjust protection definite value and protective feature.Though to the intelligent direction development, existing breaker of plastic casing is with intelligent controller or do not have the ground protection function, does not perhaps have the constructing communication network function for breaker of plastic casing, can not satisfy the needs of low-voltage distribution protection control.

Summary of the invention: at the above-mentioned defective that exists in the prior art, the utility model aims to provide a kind of breaker of plastic casing intelligent controller with ground protection and constructing communication network function.

To achieve these goals, the utility model is by the following technical solutions: it is by microcontroller circuit, with the dial-up that this microcontroller circuit connects respectively circuit, condition indication circuit, modbus communication interface circuit, dropout control Driver Circuit, ground connection channel signal modulate circuit and the four passage signal conditioning circuit mutually of adjusting, four instrument transformers of corresponding connection with each channel signal modulate circuit, the authigenic power supply circuit that is connected with the dropout control Driver Circuit, test dropout power circuit constitute respectively; The authigenic power supply circuit is connected with each channel signal modulate circuit respectively.

Compared with the prior art; the utility model is owing to adopted technique scheme; therefore not only have advantages such as overload long delay, short circuit short time delay, the moving protection of short circuit wink, ground protection; and, therefore can realize remote measurement, remote regulating, remote control, remote signalling operation with the host computer networking owing to possessed modbus communication interface function.

Description of drawings:

Fig. 1 is a structural principle schematic diagram of the present utility model;

Fig. 2 is a microcontroller circuit schematic diagram of the present utility model;

Fig. 3 is the dial-up of the present utility model circuit diagram of adjusting;

Fig. 4 is a condition indication circuit schematic diagram of the present utility model;

Fig. 5 is a modbus communication interface circuit schematic diagram of the present utility model;

Fig. 6 is dropout control Driver Circuit of the present utility model, test dropout power circuit and authigenic power supply circuit diagram;

Fig. 7 is ground connection channel signal modulate circuit of the present utility model and each phase passage signal conditioning circuit schematic diagram.

Among the figure: microcontroller circuit 1 dial-up circuit 2 condition indication circuits 3 modbus communication interface circuits 4 dropout control Driver Circuit 5 test dropout power circuits 6 authigenic power supply circuit 7 ground connection channel signal modulate circuits 8 channel signal modulate circuits 9 instrument transformers 10 of adjusting

Embodiment: the utility model is described in further detail below in conjunction with accompanying drawing and specific embodiment:

In Fig. 1～7, four instrument transformers 10 separately with corresponding A mutually, B phase, C phase, N phase passage signal conditioning circuit 9 connect, adjust circuit 2, condition indication circuit 3, modbus communication interface circuit 4, dropout control Driver Circuit 5, ground connection channel signal modulate circuit 8 of dial-up is connected with microcontroller circuit 1, test dropout power circuit 6, authigenic power supply circuit 7 are connected with dropout control Driver Circuit 5, and above-mentioned A phase, B phase, C phase, N phase passage signal conditioning circuit 9 are connected with authigenic power supply circuit 7.

Operation principle: electrical network actual loading electric current is handled through each phase passage signal conditioning circuit 9 by each phase instrument transformer 10 conversion, sends to by microcontroller circuit 1 and samples, calculates and the processing of relevant protective feature; Make breaker open operation if short circuit or overload are then delayed time or directly send the instruction of threading off by dropout control Driver Circuit 5, thereby realize overload long delay, short circuit short time delay, short circuit wink moving protection and ground protection function.The utility model adopts the modbus agreement to carry out networking with host computer through microcontroller circuit 1 and modbus communication interface circuit 4, thereby realizes remote regulating, remote control, remote signalling, telemetry function.The dial-up circuit 2 of adjusting is used to be provided with various protection parameters, and realizes real-time state indication by condition indication circuit 3.Authigenic power supply circuit 7 is given each circuit module power supply of the present utility model, and test dropout power circuit 6 only is used for intelligent controller is tested the operation of threading off.

Claims

1. breaker of plastic casing intelligent controller, it is characterized in that: by microcontroller circuit (1), the dial-up that is attached thereto adjust circuit (2), condition indication circuit (3), modbus communication interface circuit (4), dropout control Driver Circuit (5), ground connection channel signal modulate circuit (8) and four phase passage signal conditioning circuits (9), four instrument transformers (10) of corresponding connection with each channel signal modulate circuit (9), the authigenic power supply circuit (7) that is connected with dropout control Driver Circuit (5), test dropout power circuit (6) constitute; Authigenic power supply circuit (7) is connected with each channel signal modulate circuit (9) respectively.