CN202018591U - Terminal controller for electricity using safety early warning system - Google Patents

Abstract

The utility model provides a terminal controller of an electric safety early warning system, which includes a PLC, a DC power supply and a GSMModem, a two-way communication connection between the PLC and the GSMModem, a DC power supply connected to the power supply terminals of the PLC and the GSMModem, and a control output terminal of the PLC It is connected to the power supply circuit of the controlled electrical equipment through relays and contactors, and the control input terminal of the PLC is connected to the main control computer of the system through the RS232 interface. The utility model, together with the main control computer of the system and the mobile phone of the management personnel, serves as a complete system, which can realize on-site and remote monitoring of electrical equipment, rationally optimize and utilize the backup power supply, and ensure the safe operation of key electrical equipment. The electrical equipment runs for a long time, and the practical effect is good, and it is suitable for promotion and application in substations and other occasions.

Description

A terminal controller of an electric safety early warning system

technical field

The utility model belongs to the technical field of electricity safety, in particular relates to a terminal controller of an early warning system for electricity safety.

Background technique

Some special electrical equipment or systems often need to operate continuously and reliably. With the rapid development of electronic technology and the popularization of power networks, failures caused by power outages and abnormal power supply are becoming more and more serious. However, due to the complexity of the power production and transmission process, power outages are inevitable. It is extremely important to develop safe and reliable monitoring methods for such important electrical equipment.

The current technical research and practical application mainly focus on the system based on WEB network and single-chip microcomputer. This technology model has the problems of high operating costs and limited function expansion, and there are few reports on the combination of remote monitoring and optimal control.

Utility model content

The purpose of this utility model is to provide a terminal controller of an electric safety early warning system. Using the terminal controller combined with the system main control computer and the mobile phone of the management personnel, the on-site and remote monitoring of the electric equipment can be realized. Optimize and control the reasonable distribution of backup power to ensure the safe and reliable operation of key equipment.

In order to achieve the above-mentioned technical purpose, the terminal controller of the electric safety early warning system described in the utility model includes PLC, DC power supply and GSM Modem, two-way communication connection between PLC and GSM Modem, and DC power supply is connected to PLC and GSM Modem At the power supply end, the control output end of the PLC is connected to the power supply circuit of the controlled electrical equipment through relays and contactors, and the control input end of the PLC is connected to the main control computer of the system through the RS232 interface.

PLC can independently monitor the power supply circuit of electrical equipment according to the preset control strategy, and can also work in a complete mode with the participation of the main control computer. PLC directly controls the power supply circuit of electrical equipment through relays and contactors, real-time Collect the status of the mains power and the power supply conditions of the power supply circuits of various electrical equipment, display these status information, and send them to the main control computer and the mobile phone of the management personnel. Send system status and fault alarm information, and also receive short message operation instructions sent from managers' mobile phones, so as to realize on-site and remote monitoring of electrical equipment, optimize and control the reasonable distribution of backup power in case of power failure, and ensure the safety of key equipment Reliable operation.

PLC includes function management module, status acquisition module, status display module, alarm management module, GSM management module and communication module with main control computer, status acquisition module, status display module, alarm management module, GSM management module and communication module with main control computer The communication module is connected with the function management module in parallel, and the alarm management module includes a flash alarm module and a sound alarm module in parallel. The management module is used to complete the management and coordination of each functional module; the status acquisition module is used to monitor the current working status of each controlled electrical equipment and system in real time; the status display module is used to display the current status of the system to the corresponding output device and save parameters; the alarm management module is used to complete the sound and light alarm function in the fault state; the GSM management module is used to complete the sending of fault information to the mobile phone of the management personnel in the form of SMS through GSM Modem, and receive the management SMS instructions sent by personnel mobile phones; the communication module with the main control computer is used to complete the communication with the main control computer.

The control side of the relay and contactor adopts a normally closed wiring mode, even if the system fails, it will not affect the normal operation of the electrical equipment.

The utility model, together with the main control computer of the system and the mobile phone of the management personnel, serves as a complete system, which can realize on-site and remote monitoring of electrical equipment, rationally optimize and utilize the backup power supply, and ensure the safe operation of key electrical equipment. The electrical equipment runs for a long time, and the practical effect is good, and it is suitable for promotion and application in substations and other occasions.

Description of drawings

Fig. 1 is the block diagram of the working principle of the utility model together with the system main control computer and the mobile phone of the administrator in the complete mode.

Fig. 2 is a functional module architecture diagram of PLC in the utility model.

Detailed ways

The utility model is described in detail below in conjunction with accompanying drawing and specific embodiment.

As shown in Figure 1, the terminal controller 2 of the electric safety early warning system described in the utility model includes PLC, DC power supply E and GSM Modem, two-way communication connection between PLC and GSM Modem, DC power supply E is connected to PLC and The power supply end of the GSM Modem, the control output end of the PLC are connected with the power supply circuit 8 of the controlled electrical equipment through the relay 6 and the contactor 5, and the control input end of the PLC is connected with the main control computer 1 of the system through the RS232 interface.

The PLC directly controls the power supply circuit 9 of the electrical equipment through the relay 6 and the contactor 5, collects the status of the main grid 7 of the mains power and the power supply conditions of the power supply circuits of each electrical equipment in real time, displays these status information, and sends them to the main control computer 1 and the manager’s mobile phone 4, the PLC communicates with the GSM Modem two-way, not only sends the system status and fault alarm information to the manager’s mobile phone 4 through the GSM Modem, but also receives the SMS operation instructions sent from the manager’s mobile phone 4, so as to realize On-site and remote monitoring of electrical equipment, optimize and control the reasonable distribution of backup power 3 in the event of a power failure, and ensure the safe and reliable operation of key equipment.

The PLC can independently monitor the power supply circuit of the electrical equipment according to the preset control strategy, and can also work in a complete mode with the participation of the main control computer 1 .

As shown in Figure 2, PLC includes function management module 21, status acquisition module 22, status display module 23, alarm management module 24, GSM management module 25 and with main control computer communication module 26, status acquisition module 22, status display module 23. The alarm management module 24, the GSM management module 25 and the main control computer communication module 26 are connected in parallel with the function management module 21. The alarm management module 24 includes a flash alarm module 241 and a sound alarm module 242 in parallel.

The management module 21 is used to complete the management and coordination of each functional module; the status acquisition module 22 is used to monitor the current working status of each controlled electrical equipment and system in real time; the status display module 23 is used to display the current status of the system to the corresponding output device, and save the parameters; the alarm management module 24 is used to complete the sound and light alarm function under the fault state; the GSM management module 25 is used to complete the failure information sent to the management personnel in the form of short messages by GSM Modem mobile phone, and receive the short message class instruction sent by the manager's mobile phone; the communication module 26 with the main control computer is used to complete the communication with the main control computer 1. Number 8 in FIG. 1 is an external detector used by the PLC to detect the power supply status of the main power grid of the mains.

The control side of the relay 6 and the contactor 5 adopts a normally closed wiring mode, even if the system fails, it will not affect the normal operation of the electrical equipment.

The power supply circuit of each device in the utility model corresponds to a relay and a contactor. When there are few electrical equipment to be controlled, PLC, DC power supply, GSM Modem, relays and contactors can be arranged in a box, and the box cover Set the display panel and operation panel on the top. When there are many electric devices to be controlled, the relays and contactors are scattered and correspondingly connected near the power supply circuit of the electric devices.

Claims (4)

1. the terminal control unit of an Electrical Safety early warning system, it is characterized in that: comprise PLC, direct supply and GSM Modem, two-way communication is connected between PLC and the GSM Modem, direct supply is connected in the power end of PLC and GSM Modem, the control output end of PLC is connected with the current supply circuit of controlled consumer with contactor by relay, and the control input end of PLC is crossed the RS232 interface with the master control computer expert of system and linked to each other.

2. a kind of according to claim 1 terminal control unit of Electrical Safety early warning system, it is characterized in that: described PLC includes function management module, the state acquisition module, the state display module, the alarming and managing module, the GSM administration module and with master control compunlcation module, the state acquisition module, the state display module, the alarming and managing module, the GSM administration module with arranged side by side the linking to each other of master control compunlcation module with function management module, the alarming and managing module includes flashing light alarm module arranged side by side and sound alarm module.

3. a kind of according to claim 1 terminal control unit of Electrical Safety early warning system, it is characterized in that: the control side of described relay and contactor adopts normally closed wiring pattern.

4. as the terminal control unit of a kind of Electrical Safety early warning system as described in the claim 1 to 3 any, it is characterized in that: described PLC, direct supply, GSM Modem, relay and contactor are arranged in the casing, and case lid is provided with display panel and guidance panel.

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