KR20130003531A - The detection device mounted to circuit breaker and the detection system of the auxiliary power outlet information using it - Google Patents

Abstract

PURPOSE: A detection device for circuit breaker combination and a main line abnormality information detection system are provided to remotely monitor abnormality information in an integrated monitoring control panel and open a contact point of a molded case circuit breaker by generating a trip signal in an abnormality state, thereby intercepting power and maintaining safety. CONSTITUTION: A metering module(220) is mounted in a molded case circuit breaker. The metering module comprises a current transformer(CT), a zero-phase current transformer(ZCT) and an output unit. A signal processing module(240) is mounted in the metering module and receives line state information and outputs the received information with digital or analog conversion processing.

Description

Detection device for combining circuit breaker and detection system for trunk fault information using the same

The present invention relates to a circuit breaker for opening and closing a line applied to a variety of electrical equipment, the present invention relates to a circuit breaker installed on the line between the switchgear and the floor switchboard, that is, the entrance and exit of the trunk line, that is to say the switchboard side and the floor switchboard side respectively. The present invention relates to a detection device and a trunk information detection system that are equipped with a detection device as a separate structure capable of acquiring a current, and which can check and control abnormality information of trunk lines by measuring a difference in current measured by each detection device.

Various circuit breakers of various ratings are required for the selective opening and closing of main and branch lines in building units or subregional units such as schools or group residential facilities.

Such a circuit breaker plays an important role of opening and closing the power supply to various electrical equipment or the load side, so the reliability of the operation performance is very important. However, until now, the circuit breaker performs only the opening / closing function of the supply power to the electric power facility, and there is no function to judge the abnormal state of the other lines.

Accordingly, when a separate device for measuring the state of the power equipment or the power load stage is not provided, there is a problem that it is not possible to easily find out whether the failure occurs in the field even if a failure occurs on the distribution line.

In particular, the trend of collecting and managing the status information of each power distribution system in a remote central management center to facilitate the facility inspection and maintenance work of power facilities, but the circuit breaker installed on the site alone is the target of management on the overall network. It is excluded from the situation.

Therefore, in order to remotely manage the circuit breaker and line state, the circuit breaker and line state can be monitored at the remote central control center only by measuring the line state and automatically transmitting the monitoring information to the circuit breaker.

The present invention is to solve the problems of the conventional circuit breaker as described above, it is possible to obtain the current in the line between the switchboard and the floor switchboard, that is, the circuit breaker for the switchboard and the floor switchboard corresponding to the entry and exit of the trunk line respectively. It is an object of the present invention to provide a detection device and a trunk protection system using the same, each of which is equipped with a separate structure, and can measure and control the abnormality information of the trunk by measuring the difference between the measured currents.

In order to achieve the above object, the present invention is a device for detecting and controlling the abnormal state of the trunk, which is the line between the switchboard and the floor switchboard, the line flowing through the circuit breaker respectively installed on the switchboard side and the floor switchboard side of the trunk line A detection device for detecting a state and digitally processing information on the detected line state and outputting the information to the outside is detachably mounted in a separate module form to a circuit breaker installed at the switchboard side and the floor switchboard side of the trunk line. It provides a circuit breaker coupling detection device.

The detecting device is detachably mounted to each of the circuit breakers, and is capable of outputting information about a CT, ZCT and a line state detected by the CT and ZCT that can detect a line state of each phase flowing through the wiring breaker. A measurement module having an output unit; And a signal processing module detachably mounted to the measurement module, including information on the line state detected by the measurement module, and outputting the received information by digital or analog conversion processing.

The signal processing module includes: a PT for measuring a voltage between each phase flowing through the circuit breaker; Control power is supplied from each phase power flowing through the circuit breaker through the output of the measurement module, and information about the line state detected by the CT and ZCT output from the output of the measurement module is detected by the PT. A signal processor for receiving digital information about the line state and converting the digital signal to output the digital signal; A display unit for outputting and displaying a signal digitally processed by the signal processor; And a serial communication unit which is driven by a control power supply from the PT and remotely transmits the digitally processed information from the signal processing unit.

The signal processing module may further include an RF writer for configuring an RF wireless communication network with an external RFID device while the digitally converted information is input and recorded by the signal processing unit.

The signal processing unit may include: an A / D converter for receiving digital information on the line state detected by the CT and ZCT output from the output unit of the measurement module and information on the line state detected by the PT; A memory for storing the digital signal converted by the A / D converter; And a digital input / output device for inputting / outputting a digital signal or a remote trip signal converted by the A / D converter.

The signal processing unit may further include a D / A converter receiving a forced trip signal for opening the contact of the circuit breaker from the outside through the serial communication unit and converting the signal into an analog signal.

In addition, the measurement module is provided with a number capable of detecting the state of each phase flowing through the circuit breaker of three-phase four-wire, single-phase three-wire, three-phase three-wire or single-phase two-wire according to the type of each circuit breaker. CT, ZCT and the output unit for outputting information on the track state detected by the CT, ZCT may be provided.

In order to achieve the above object, the present invention provides a trunk information detecting system for detecting and controlling an abnormal state of trunk which is a line between a switchgear and a floor switchboard, the circuit breaker being provided at the switchboard side and the floor switchboard side of the trunk line, respectively; Removably coupled to each wiring breaker in the form of an independent module, and detects the line state flowing through the wiring breaker to digitally process the information on the detected line state to output to the outside or to open the contact of the circuit breaker from the outside. A detection device for receiving a trip signal and performing analog processing to output the trip signal; And an integrated monitoring controller configured to monitor and control an abnormal state of the trunk line by receiving the information output from the respective detection devices and detecting a current difference. To present.

The integrated monitoring controller, the alarm generating unit for generating a different alarm for each preset value according to the magnitude of the current difference; And a trip signal generator for generating a trip signal to the detection device when the magnitude of the current difference reaches a maximum set value.

The present invention can obtain the following effects through the circuit breaker coupling detection device and the trunk fault information detection system using the same.

The circuit breaker fault information detecting device for wiring circuit breaker of the present invention is an article independent of the circuit breaker, and is connected to the entry or exit side of the circuit breaker, and the two circuits are provided on the switchboard side and the floor panel side of the trunk line, respectively. By measuring the current of the device and displaying it on the outside of the device, it is possible to transmit it to the outside of the remote area, providing a unique effect of immediately acquiring the information of the trunk line in the field or remote place.

In particular, the apparatus for detecting fault information of trunk lines of the present invention provides integration of remote locations by providing current information of the trunk entrance and exit, that is, the current distribution information on the distribution panel side and the floor distribution panel of the trunk line to be compared with each other in the integrated monitoring controller configured in the integrated monitoring control panel. The monitoring control panel monitors abnormal information such as short circuit or ground fault in real time, generates trip signal in case of abnormality, opens the contacts of the circuit breaker, and cuts off the power supply for safety.

1 is a state diagram showing a state of a pair of detection device for coupling a circuit breaker installed in the trunk line according to the present invention.
2 is a conceptual diagram illustrating a method of detecting a current difference by using a pair of detection devices for coupling circuit breakers installed in the trunk line according to the present invention.
3A and 3B are a perspective view and a cross-sectional view of a detection device for coupling a circuit breaker installed in a trunk line according to the present invention.
4 is a mounting configuration diagram of a module constituting a detection device coupled to a circuit breaker installed in the trunk line according to the present invention.
5 is an internal configuration diagram of a measurement module of a detection device for coupling a circuit breaker installed in a trunk line according to the present invention.
6 is a block diagram of a trunk line information detection system using a detection device for coupling a circuit breaker installed in a trunk line according to the present invention.
7 is a diagram showing a preset value set therein for generating an alarm according to the magnitude of the current difference in the integrated monitoring controller configured in the integrated monitoring control panel according to the present invention.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 is a state diagram showing a state of a pair of circuit breaker coupling detection device provided in the trunk line according to the present invention, Figure 2 is a current using a pair of circuit breaker coupling detection device installed in the trunk line according to the present invention. It is a conceptual diagram explaining the method of detecting a difference.

Referring to the figure, the detection apparatus 200 of the present invention is a device for detecting and controlling the abnormal state of the trunk line which is a line between the switchgear 10 and the floor switchboard 20.

Accordingly, the detection device 200 is configured to be coupled to the circuit breaker 100 mounted on the trunk line, and is configured to detect abnormality information of the trunk line.

More specifically, the detection device 200 is configured in a structure that can detect the current information flowing through the circuit breaker in the form of an independent module detachable to the entry or exit of the circuit breaker 100, the entry and exit of the trunk line It is configured to be mounted in pairs to each of the installed circuit breaker 100.

Referring to FIG. 2, the trunk line information detection system of the present invention is configured to check the abnormality information of the trunk line by measuring a difference between currents measured by the pair of detection devices 200.

3A and 3B are a perspective view and a cross-sectional view of a circuit breaker coupling detecting device installed in a trunk line according to the present invention, and FIG. 4 is a module constituting a detection device coupled to a circuit breaker installed in the trunk line according to the present invention. It is a block diagram.

Referring to FIG. 5, the detection device for coupling the circuit breaker 200 installed in the trunk line is configured to be detachably coupled to the circuit breaker 100.

More specifically, the detection apparatus 200 is configured to be detachably mounted to the circuit breaker 100, and to detect a line state of each phase flowing through the circuit breaker and a line state detected through the circuit breaker. The measurement module 220 is provided with an output unit for outputting information.

In addition, the detection device 200 is detachably mounted to the measurement module 220 to receive information on the line state detected by the measurement module, a remote signal, etc., and output the received information by digital or analog conversion processing. The signal processing module 240 is configured to be included.

5 is an internal configuration diagram of a measurement module of a detection device for coupling a circuit breaker installed in a trunk line according to the present invention.

Referring to FIG. 5, a current transformer (CT) for detecting current as a detection sensor capable of detecting a line state of each phase flowing in the wiring breaker is mounted inside the measurement module 220 detachably mounted to the wiring breaker 100. 220a), an image transformer ZCT 220b for detecting an image current, and an output unit 220c for outputting information on a line state detected by the current transformer CT 220a and the image transformer ZCT 220b. Is provided.

Although the measurement module 220 shown is shown as a type applicable to a three-phase four-wire wiring breaker, a measurement module of a type that can be applied accordingly to a circuit breaker of a single-phase three-wire, single-phase two-wire and three-phase three-wire types respectively. The current transformers CT and 220a for detecting current provided in the measurement module 220 and the number of image current transformers ZCT and 220b for detecting image current may be adjusted accordingly. The output unit 220c may also be changed and configured accordingly.

In addition, the signal output module 240 is configured to be driven by receiving control power from each phase power flowing in the wiring breaker connected to the output unit 220c of the measurement module 220.

6 is a block diagram of a trunk line information detection system using a detection device for coupling a circuit breaker installed in a trunk line according to the present invention.

Referring to FIG. 5, the signal processing module 240 of the detection apparatus 200 receives the line state information output while being connected to the internal line of the measurement module 220, processes the signal, and transmits the signal to the outside through a communication cable. .

In other words, the signal processing module 240 is mounted in the form of a module while including a control circuit for digital processing on the upper part of the measurement module 220 to digitally process the line state information detected from the measurement module 220. After storing in the internal memory (240b-2), it is configured to be drawn out through a communication cable or the like.

In more detail, the signal processing module 240 includes a PT (Potential transformer, 240a) for measuring the voltage between each phase flowing in the circuit breaker.

In addition, the control power is supplied through the output unit 220c of the measurement module, and is detected by the current transformers CT and 220a and the image current transformers ZCT and 220b output from the output unit 220c of the measurement module. The signal processor 240b is configured to receive information about the line state and information about the line state detected by the PT 240a and to digitally convert and output the line state.

Specifically, the signal processing unit 240b includes information about the line state detected by the current transformers CT and 220a and the image current transformers ZCT and 220b output from the output unit 220c of the measurement module and the PT 240a. A / D converter 240b-1 is configured to receive and transmit information on the line state detected by the digital conversion.

In addition, the signal processing unit 240b inputs / outputs a memory 240b-2 for storing the digital signal converted by the A / D converter 240b-1 and a digital signal or a remote trip signal converted by the A / D converter. The digital input / output unit 240b-3 is configured.

In addition, the signal processor 240b includes a D / A converter 240b-4 that receives a forced trip signal for opening the contact 100a of the circuit breaker from the outside and converts the signal to an analog signal.

The signal processing module 240 further includes an RF writer 240c constituting an RF wireless communication network with an external RFID device while the digitally converted information is input and recorded by the signal processing unit 240b. do.

To this end, the RFID device may be embedded with a related application or program, through which the line state of the trunk is recognized and bidirectional communication is possible, thereby controlling the contact point of the circuit breaker 100 installed in the trunk. Can be.

In addition, the digital signal processed by the signal processor is externally output and displayed on the display unit 240d and the PT (240a) is supplied with a control power is driven to transmit the digitally processed information from the signal processor (240b) Or serial communication unit 240e for receiving a signal transmitted from the outside is further configured.

The operation method of the trunk line information detection system using the wiring breaker coupling detecting device for detecting and controlling the abnormal state of the trunk line which is the line between the switchboard and the floor panel will be described.

Referring to FIG. 6, in the trunk information detecting system of the present invention, the detection device 200 is coupled to a circuit breaker 100 respectively installed at the switchboard side and the floor distribution panel side of the trunk line, and the signal of the detection device 200 is coupled. The signal processor 240b configured in the processing module 240 includes information on the line state detected by the current transformers CT and 220a and the image current transformers ZCT and 220b of the measurement module 220 and the lines detected by the PT 240a. Integrated monitoring controller configured in the integrated monitoring control panel 300 by receiving the information on the status of the digital conversion, display externally through the display unit 240d or remotely transmit the digitally processed information through the serial communication unit 240e (not shown) Will be sent.

In addition, the RF writer 240c inputs and records information digitally converted by the signal processor 240b to form an RF wireless communication network with an external RFID device. Through this, it is possible to recognize information on the track state of the trunk line through the RFID device.

The integrated monitoring controller configured in the integrated monitoring control panel 300 receives the information output from the respective detection devices 200 coupled to the circuit breakers 100 on the switchboard side and the floor distribution panel side of the trunk line, respectively, to obtain a current difference. It is configured to detect and monitor and control the abnormal state of the trunk.

In other words, when the integrated monitoring controller detects a current difference between the detection devices 200 and recognizes an abnormal state of the trunk line, the forced trip signal for opening the contact of the circuit breaker 100 installed in the trunk line is detected. It is transmitted to the device, the detection device 200 receives the trip signal for opening the contact of the circuit breaker for the analog conversion process through the D / A converter 240b-4 to send a trip signal to the circuit breaker 100 Will print.

Therefore, in the integrated monitoring controller configured in the integrated monitoring control panel 300, when there is an abnormal state in the trunk, it is possible to control the contact point of the circuit breaker 100 installed in the trunk.

Similarly, when the RFID device recognizes the trunk line state information recorded in the RF writer 240c, it generates a trip signal through an application or a program embedded in the RFID device, so that the circuit breaker 100 is installed in the trunk line. The contact point can be controlled.

7 is a diagram showing a preset value set therein for generating an alarm according to the magnitude of the current difference in the integrated monitoring controller configured in the integrated monitoring control panel according to the present invention.

The integrated monitoring controller is configured with an alarm generating unit for generating different alarms for each preset value according to the magnitude of the current difference from the pair of detection apparatus 200.

In more detail, in the state classified into the low current, the medium current, and the high current according to a reference value, it is comprised so that an alarm may differ according to the current difference from the said pair of detection apparatus 200. FIG. Alarms can vary by changing the alarm sound or alarm color.

For example, when the current difference is 1A or more, the alarm generator generates alarm 1, when 2.5A or more, alarm 2 is generated, and when 5A or more, alarm 3 is generated while the line state of the trunk is changed. It is configured to recognize.

In addition, the integrated monitoring controller is configured with a trip signal generator for generating a trip signal to the detection device 200 when the magnitude of the current difference reaches a maximum set value.

Referring to FIG. 7, in the case of low current, when the current difference is 7A and 7A is the maximum setting value, the trip signal generator is configured to generate a trip signal to the detection device 200.

Eventually, through the integrated monitoring controller configured in the remote monitoring control panel at the remote site, it monitors the abnormal information such as short circuit or ground fault of the trunk in real time and generates a trip signal in case of abnormality to open the contact of the circuit breaker to cut off the power supply for safety. It becomes possible.

In the detailed description of the present invention, specific embodiments have been described, but the present invention is not limited thereto and various modifications may be made without departing from the scope of the technical idea of the present invention in all communication methods requiring a network in a specific space or remotely. This possibility will be apparent to those of ordinary skill in the art.

10: switchboard 20: floor switchboard
100: circuit breaker 100a: contact
200: detection device
220: measurement module 220a: current transformer
220b: current transformer 220c: output unit
240: signal processing module 240a: PT
240b: signal processor 240b-1: A / D converter
240b-2: Memory 240b-3: Digital I / O
240b-4: D / A Converter 240c: RF Writer
240d: display unit 240e: serial communication unit
300: integrated monitoring control panel

Claims (9)

In the device for detecting and controlling the abnormal state of the trunk line which is the line between the switchboard and the floor switchboard,
A detection device for detecting a line state flowing through a circuit breaker installed on the switchboard side and the floor switchboard side of the trunk line, and digitally processing information on the detected line state and outputting it to the outside is the switchboard side and the layer switchboard side of the trunk line. A circuit breaker coupling detection device, characterized in that the circuit breakers are installed in the detachable module form detachably mounted to each of the circuit breakers. The method of claim 1, wherein the detection device,
Measurement is provided that is detachably mounted to each of the circuit breakers, CT, ZCT capable of detecting the line state of each phase flowing through the wiring breaker, and an output unit for outputting information on the line state detected by the CT, ZCT module; And
A signal processing module detachably mounted to the measurement module, including a signal related to the line state detected by the measurement module, and a signal processing module for outputting the received information by digital or analog conversion processing; Coupling detection device. The method of claim 2, wherein the signal processing module,
PT for measuring the voltage between each phase flowing to the said circuit breaker;
Control power is supplied from each phase power flowing through the circuit breaker through the output of the measurement module, and information about the line state detected by the CT and ZCT output from the output of the measurement module is detected by the PT. A signal processor for receiving digital information about the line state and converting the digital signal to output the digital signal;
A display unit for outputting and displaying a signal digitally processed by the signal processor; And
And a serial communication unit which is driven by the control power supplied from the PT and remotely transmits the digitally processed information from the signal processing unit. The method of claim 3, wherein the signal processing module,
And an RF writer constituting an RF wireless communication network with an external RFID device while the digitally converted information is input and recorded by the signal processing unit. The method of claim 3, wherein the signal processing unit,
An A / D converter for digitally receiving and receiving information on the line state detected by the CT and ZCT output from the output of the measurement module and information on the line state detected by the PT;
A memory for storing the digital signal converted by the A / D converter; And
And a digital input / output device for inputting and outputting a digital signal or a remote trip signal converted by the A / D converter. The method of claim 5, wherein the signal processing unit,
And a D / A converter which receives a forced trip signal for opening the contact of the circuit breaker from the outside through the serial communication unit and converts it into an analog signal. The method of claim 2, wherein the measurement module,
CT, ZCT and CT provided with a number capable of detecting the line state of each phase flowing in a three-phase four-wire, single-phase three-wire, three-phase three-wire, or single-phase two-wire circuit breaker according to the type of each circuit breaker. And an output unit for outputting information on the line condition detected by the ZCT. In the trunk information detection system for detecting and controlling the abnormal state of the trunk which is the line between the switchboard and the floor panel,
A circuit breaker provided on each of the switchboard side and the floor switchboard side of the trunk line;
Removably coupled to each wiring breaker in the form of an independent module, and detects the line state flowing through the wiring breaker to digitally process the information on the detected line state to output to the outside or to open the contact of the circuit breaker from the outside. A detection device for receiving a trip signal and performing analog processing to output the trip signal; And
And an integrated monitoring controller for monitoring and controlling an abnormal state of the trunk by receiving the information output from the respective detection devices and detecting a current difference. The method of claim 8, wherein the integrated monitoring controller,
An alarm generator for generating different alarms for each preset value according to the magnitude of the current difference; And
And a trip signal generation unit for generating a trip signal to the detection device when the magnitude of the current difference reaches a maximum set value.

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