CN214154154U

CN214154154U - Microcomputer comprehensive protection measurement and control system

Info

Publication number: CN214154154U
Application number: CN202023343280.6U
Authority: CN
Inventors: 王潜; 杨金龙
Original assignee: Anshan Junlong Automation Control System Co ltd
Current assignee: Anshan Junlong Automation Control System Co ltd
Priority date: 2020-12-31
Filing date: 2020-12-31
Publication date: 2021-09-07
Anticipated expiration: 2030-12-31

Abstract

The utility model provides a microcomputer integrated protection measurement and control system, which comprises a measurement and control system, a switching value system, an external interface, a relay, a photoelectric isolator and a man-machine interaction panel, wherein the switching value system is communicated with the measurement and control system; the measurement and control system comprises a CPU processor circuit, an arc light sensor of a bus chamber, a switch chamber and a cable chamber, a temperature and humidity sensor in the cabinet, a bus temperature measuring sensor and a breaker contact temperature measuring sensor, wherein the arc light sensor of the bus chamber, the switch chamber and the cable chamber, the temperature and humidity sensor in the cabinet, the bus temperature measuring sensor and the breaker contact temperature measuring sensor are respectively connected with the CPU processor circuit. The system is additionally provided with arc light acquisition sensors of a switch chamber, a cable chamber and a bus chamber, and is additionally provided with a temperature acquisition point, so that comprehensive protection is realized under the functions of measurement and control, protection, trip early warning and the like, and the system is good in safety and high in response speed.

Description

Microcomputer comprehensive protection measurement and control system

Technical Field

The utility model relates to a feeder cabinet's observing and controlling technical field especially relates to a feeder cabinet's computer integrated protection measurement and control device.

Background

The microcomputer comprehensive protection measurement and control device is an economical protection for integrating measurement, control, protection and communication; the high-voltage distribution room of the distribution network terminal is customized, three-section type non-directional current protection is taken as a core, and monitoring and acquisition functions of power grid parameters are provided, so that the traditional ammeter, voltmeter, power meter, frequency meter, kilowatt-hour meter and the like can be omitted, the measured data and the protection information can be remotely transmitted to an upper computer through a communication port, and distribution network automation can be conveniently realized; the device integrates the automatic switching function of the standby power supply in the device according to the characteristics of the power supply of the distribution network, can flexibly realize the functions of the inlet wire standby switch and the mother standby switch, and applies a microcomputer comprehensive protection measurement and control device to protect the feeder cabinet in the feeder cabinet.

Disclosure of Invention

The utility model provides a computer integrated protection system of observing and controling has add the arc light acquisition sensor of switch room, cable chamber, generating line room to this system to add the temperature acquisition point, realize integrated protection under functions such as realization observing and controling, protection, tripping operation early warning, the security is good, and response speed is fast.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a microcomputer comprehensive protection measurement and control system is characterized by comprising a measurement and control system, a switching value system, an external interface, a relay, a photoelectric isolator and a man-machine interaction panel, wherein the switching value system is communicated with the measurement and control system; the measurement and control system comprises a CPU processor circuit, an arc light sensor of a bus chamber, a switch chamber and a cable chamber, a temperature and humidity sensor in the cabinet, a bus temperature measuring sensor and a breaker contact temperature measuring sensor, wherein the arc light sensor of the bus chamber, the switch chamber and the cable chamber, the temperature and humidity sensor in the cabinet, the bus temperature measuring sensor and the breaker contact temperature measuring sensor are respectively connected with the CPU processor circuit.

The CPU processor circuit is also connected with a memory circuit which is used for storing fault messages, sampling data and fixed value programs.

The CPU processor circuit is also connected with an alarm circuit.

The external interface comprises a communication interface and a man-machine interface, the communication interface comprises an IRIG-B GPS interface, an RS485 interface and an Ethernet interface, the communication interface is connected with the singlechip microcomputer system and is convenient for data communication with external equipment, and the man-machine interface is also connected with the singlechip microcomputer system and is connected with the man-machine interaction panel through the man-machine interface.

Compared with the prior art, the beneficial effects of the utility model are that:

1) the utility model ensures the normal operation of the feeder cabinet and realizes the functions of measurement, control, protection and communication integration;

2) the arc light acquisition sensors of the switch chamber, the cable chamber and the bus chamber are additionally arranged, and the temperature acquisition points are additionally arranged, so that comprehensive protection is realized under the functions of measurement and control, protection, trip early warning and the like, and the arc light acquisition device is good in safety and high in response speed.

3) The module integrates, and is small, is applicable to the feeder cabinet of different voltage levels, and the suitability is strong.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

FIG. 2 is a block diagram of a measurement and control system.

Fig. 3 is a pin wiring diagram of the inventive device.

In the figure: 1. data acquisition system 2, switching value system 3, measurement and control system 4 and external interface

Detailed Description

The following description of the embodiments of the present invention will be made with reference to the accompanying drawings:

referring to fig. 1-3, the microcomputer integrated protection measurement and control system comprises a measurement and control system, a switching value system, an external interface, a relay, a photoelectric isolator and a man-machine interaction panel, wherein the switching value system is communicated with the measurement and control system; the measurement and control system comprises a CPU processor circuit, an arc light sensor of a bus chamber, a switch chamber and a cable chamber, a temperature and humidity sensor in the cabinet, a bus temperature measuring sensor and a breaker contact temperature measuring sensor, wherein the arc light sensor of the bus chamber, the switch chamber and the cable chamber, the temperature and humidity sensor in the cabinet, the bus temperature measuring sensor and the breaker contact temperature measuring sensor are respectively connected with the CPU processor circuit. The CPU processor circuit is also connected with a memory circuit and an alarm circuit.

The data acquisition system 1 comprises an analog quantity input system and an analog-to-digital conversion module, and the data acquisition system 1 acquires analog quantity input signals of current and voltage of the power system and converts the analog quantity input signals.

The switching value system 2 comprises a switching value input module and a switching value output module, wherein the switching value input module is connected with the photoelectric isolator, and the switching value output module is connected with the relay.

The switching value system 2 collects switching value signals of the power system, all collected signals are transmitted to the measurement and control system 3 to be analyzed and processed, the measurement and control system 3 is connected with the external interface 4 and transmits data with external communication, then the human-computer interaction panel is connected with the external interface 4, and data setting, changing and displaying are carried out on the system through the panel.

The measured and controlled system 3 realizes the function of a microcomputer protection device, a CPU processor circuit is connected with a memory, fault messages, sampling data and fixed value programs are stored, electric energy, tripping and closing and fault recording are monitored, and an overcurrent protection circuit is further arranged to perform overcurrent protection on the CPU.

The external interface 4 comprises a communication interface and a man-machine interface, the communication interface comprises an IRIG-B GPS interface, an RS485 interface and an Ethernet port, the communication interface is connected with the measurement and control system 3 and is convenient for data communication with external equipment, and the man-machine interface is also connected with the measurement and control system 3 and is connected with a man-machine interaction panel through the man-machine interface.

The analog input system collects analog signals such as voltage, current and frequency of a feeder cabinet, signals of a switching value input module passing through a photoelectric isolator enter a CPU (central processing unit) circuit, the CPU circuit processes all the signals, switching value data are output through a switching value output module, the switching value output signals pass through a relay to execute a switching value output command, other required switching value and analog output data enter a man-machine interaction panel through a man-machine interface, the switching value and analog output data can be called and displayed through keys on a display screen of the man-machine interaction panel, parameters required to be set can be input into the device through a keyboard on the man-machine interaction panel, all the modules are integrally installed in a metal shell, external wiring pins are arranged, and external incoming line voltage, power, current signals and the like can be measured and displayed.

Claims

1. A microcomputer comprehensive protection measurement and control system is characterized by comprising a measurement and control system, a switching value system, an external interface, a relay, a photoelectric isolator and a man-machine interaction panel, wherein the switching value system is communicated with the measurement and control system; the measurement and control system comprises a CPU processor circuit, an arc light sensor of a bus chamber, a switch chamber and a cable chamber, a temperature and humidity sensor in the cabinet, a bus temperature measuring sensor and a breaker contact temperature measuring sensor, wherein the arc light sensor of the bus chamber, the switch chamber and the cable chamber, the temperature and humidity sensor in the cabinet, the bus temperature measuring sensor and the breaker contact temperature measuring sensor are respectively connected with the CPU processor circuit.

2. The microcomputer integrated protection, measurement and control system according to claim 1, wherein the CPU processor circuit is further connected to a memory circuit, and the memory circuit is used to store fault messages, sampling data and fixed value programs.

3. The microcomputer integrated protection, measurement and control system according to claim 1, wherein the CPU processor circuit is further connected to an alarm circuit.

4. The microcomputer integrated protection, measurement and control system according to claim 1, wherein the external interface comprises a communication interface and a man-machine interface, the communication interface comprises an IRIG-B GPS interface, an RS485 interface and an Ethernet interface, the communication interface is connected with the microcomputer system of the single chip microcomputer and is convenient for data communication with external equipment, and the man-machine interface is also connected with the microcomputer system of the single chip microcomputer and is connected with the man-machine interaction panel through the man-machine interface.