CN203014490U - Intelligent monitor of transformer substation - Google Patents

Abstract

The utility model relates to a monitor, in particular to an intelligent monitor for a substation. The technical scheme of the utility model is: an intelligent monitor for a substation, including a casing, an MCU controller, a sensor, a circuit breaker, a display, a network communication interface, and a DDC direct input interface. The MCU controller, circuit breaker, and network communication The interface and the DDC direct input interface are installed inside the housing, which is characterized in that: the sensor acquires voltage and current signals and transmits them to the MCU controller, and the MCU controller controls the on-off of the circuit breaker according to the voltage and current signals. The MCU controller converts the voltage signal into a digital signal for real-time display on the display, and provides the network communication interface for remote monitoring of the computer.

Description

Smart Monitors for Substations

technical field

The utility model relates to a monitor, in particular to an intelligent monitor for a substation.

Background technique

In order to protect the power supply lines and power equipment from overload, undervoltage, short circuit, single-phase grounding and other faults in the substation, a main switch is installed in the low-voltage power distribution cabinet to control and protect the low-voltage power supply with a rated current of 630A ~ 6300A. distribution network. The existing main switch is more advanced. The intelligent universal circuit breaker has intelligent protection function, accurate selective protection, and can improve the reliability of power supply. At the same time, it has an open communication interface, which can be connected with the upper computer for remote control Tune and so on. Its intelligent controller has overload long-delay inverse time limit, short-delay inverse time limit, definite time limit, and instantaneous functions; it also has display functions such as setting current display, operating current display, and voltage display of each line, overload alarm function, and overheating. Self-test functions such as self-test and microcomputer self-diagnosis.

Although the intelligent universal circuit breaker has the function of controlling and protecting the low-voltage power distribution network, it lacks the monitoring function. If online monitoring and harmonic analysis are to be performed on the line, many monitoring instruments and meters need to be added, which not only needs to expand The volume of the low-voltage distribution cabinet will greatly increase the cost and complexity of installation. Now in the low-voltage power distribution network, with the rapid development of power electronics technology, a large number of non-linear negative cuts are put into use, resulting in high-amplitude harmonic currents. Harmonic problems have become increasingly serious in substations. Serious harm and impact have been produced.

The utility model has carried out beneficial improvement in order to overcome above-mentioned defect.

Utility model content

The purpose of the utility model is to solve the above-mentioned deficiencies in the prior art and provide an intelligent monitor for a substation.

The purpose of the utility model is to realize the monitoring of the current and voltage of the substation through the sensor and the MCU controller, and realize the remote control.

In order to achieve the above object, the technical solution of the present utility model is: an intelligent monitor of a substation, including a casing, an MCU controller, a sensor, a circuit breaker, a display, a network communication interface, a DDC direct input interface and a keyboard, and the MCU controls A device, a circuit breaker, a network communication interface, and a DDC direct input interface are installed inside the housing, and it is characterized in that: the sensor acquires voltage and current signals and transmits them to the MCU controller, and the MCU controller controls the voltage and current signals according to the voltage and current signals On and off of the circuit breaker, the MCU controller converts the voltage signal into a digital signal for real-time display on the display, and provides it to the network communication interface for remote monitoring of the computer.

Furthermore, the MCU controller is MC68HC908GT16 single-chip microcomputer.

Beneficial effects of the utility model: Compared with the prior art, the utility model combines power grid monitoring, remote control and intelligent circuit breaker, takes the MCU as the core, monitors the true effective value of the voltage, the true effective value of the current, etc., each The parameters can be displayed in real time in the form of data and waveforms through the LED liquid crystal display, and the recorded waveforms can be played back online or uploaded to the computer through the network interface, which is very important to ensure the safe operation of the substation.

Description of drawings

Fig. 1 is a system structure block diagram of the present utility model;

Among them, 1: MCU controller, 2: circuit breaker, 3: sensor, 4: power grid, 5: DDC direct input interface, 6: network communication interface, 7: monitor, 8: computer, 9: keyboard, 10: shell.

Detailed ways

Below in conjunction with accompanying drawing and embodiment the utility model is described further.

The embodiment of the utility model is shown in Fig. 1 with reference to.

An intelligent monitor for a substation, comprising a casing, an MCU controller, a sensor, a circuit breaker, a display, a network communication interface, and a DDC direct input interface, wherein the MCU controller, the circuit breaker, the network communication interface, and the DDC direct input interface are installed on Inside the housing, it is characterized in that: the sensor acquires voltage and current signals and transmits them to the MCU controller, the MCU controller controls the on-off of the circuit breaker according to the voltage and current signals, and the MCU controller converts the voltage signals The digital signal is provided to the monitor for real-time display, and provided to the network communication interface for remote monitoring of the computer.

Furthermore, the MCU controller is MC68HC908GT16 single-chip microcomputer.

Further, the sensor is a voltage sensor or a current sensor.

Furthermore, the display is an LED liquid crystal display.

Further, the network communication interface is an RS485 network interface

Furthermore, the network communication interface is a wireless WIFI interface.

Furthermore, the keyboard is connected to the MCU controller through a DDC direct input interface.

The above-mentioned embodiment is only an embodiment of the present utility model, but should not be construed as limiting the scope of the present utility model. It should be pointed out that those skilled in the art can make several modifications and improvements without departing from the concept of the utility model, and these all belong to the protection scope of the utility model.

Claims (7)

1. the intelligent monitor of a transformer station, comprise shell, the MCU controller, transducer, circuit breaker, display, network communication interface, the direct input interface of DDC and keyboard, described MCU controller, circuit breaker, network communication interface, the direct input interface of DDC is arranged on described enclosure, it is characterized in that: described transducer obtains voltage, be transferred to the MCU controller after current signal, described MCU controller is according to voltage, current signal is controlled the break-make of circuit breaker, described MCU controller is converted to digital signal with voltage signal and offers display and show in real time, offer described network communication interface and be used for the computer remote monitoring.

2. the intelligent monitor of transformer station according to claim 1, it is characterized in that: the MCU controller is the MC68HC908GT16 single-chip microcomputer.

3. the intelligent monitor of transformer station according to claim 1, it is characterized in that: described transducer is voltage sensor, current sensor.

4. the intelligent monitor of transformer station according to claim 1, it is characterized in that: described display is the LED liquid crystal display.

5. the intelligent monitor of transformer station according to claim 1, it is characterized in that: described network communication interface is the RS485 network interface.

6. the intelligent monitor of transformer station according to claim 1, it is characterized in that: described network communication interface is wireless WIFI interface.

7. the intelligent monitor of according to claim 1-6 any one described transformer stations, it is characterized in that: described keyboard is connected with the MCU controller by the direct input interface of DDC.

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