KR100887550B1 - A panel board having function of tracking individual load protection - Google Patents

Abstract

A panel board is provided to prevent the damage of whole power system by interrupting only a fault line when a ground fault current is generated. In a panel board, a distribution panel includes a ZOCT(Zero Over Current Transformer) and ZOR(Zero Over current Relay) controller(33). The ZOCT includes a CT(Current Transformer), ZCT(Zero Current Transformer), an input terminal, and output terminal. The CT detects three-phase current, and the ZCT detects a leakage current. The ZOCT is connected with the secondary side of a MCCB(Mold Case Circuit Breaker). A signal converter converts data of the three-phase current and leakage current into a communication signal. The ZOR controller compares the output of the signal converter with a predetermined value. If the output data of the signal converter is out of the range of the predetermined value, the ZOR controller executes a shunt trip command of MCCB of each load.

Description

A panel board having function of tracking individual load protection

The present invention relates to a number and a switchboard, and more particularly, to a number and a switchboard having a blocking function by tracking a fault line.

In general, a power switchboard is a device that distributes electricity by receiving electricity of a special high voltage from a power company and processing it to a capacity and voltage suitable for a load facility. It is a circuit breaker for supplying power to each load from an ACB. Configured.

However, in the above-described conventional water and distribution panel, the circuit breaker at the point where an abnormality occurs when an abnormality occurs due to an overcurrent leakage should be interrupted first, but the main circuit breaker on the low voltage side is interrupted, causing the entire line to cause an electrostatic accident. There was a problem.

In addition, after the main circuit breaker was cut off due to an error occurred, there was also a problem that it was not possible to check which line of the line was blocked due to any abnormality.

Accordingly, the present invention has been made in order to solve the above-described problems, the high-voltage power supply detecting device (VD) is provided integrally or separately with the switch in front of the main circuit switch of the power receiving line and the output voltage detection value of the switch controller It is displayed on the voltage display lamp (LED) of three phases in (ASS, LBS controller), and the phase display lamp is displayed when it is missing, and the phase output is sent out to cut off the main circuit breaker or main circuit breaker (VCB). The main circuit breaker (ACB) consists of a plurality of circuit breakers (MCCB) for distributing and supplying electricity supplied to each load facility or distribution box to the secondary side, and on the secondary side of the circuit breaker (MCCB) of the low voltage switchgear in the distribution panel. Branch-over load control device (ZOR-controlle) outputs the current and ground current detector (ZOCT) with input and output terminals for phase current, ground current, and temperature detection. r) When the data is out of the setting range and the data is compared with the set value, the circuit breaker for each circuit is cut off, and the breakdown status and cause of the high voltage main circuit breaker, the main circuit breaker and the low voltage circuit breaker are described. The purpose is to provide a switchboard with a function to cut down the fault line to notify workers or managers of the voice broadcasting and notify the facts through the mobile phone.

In order to achieve the above object, a male and a switchboard having a fault line selection blocking function according to the present invention are provided with a high voltage power detector (VD) integrated with or separately from a switch in front of a main circuit switch of the receiver line and output voltage thereof. The detection value is displayed on the voltage display lamp (LED) of three phases in the switch controller (ASS, LBS controller), and the phase display lamp is displayed when missing the phase, and the phase output is sent out to cut off the main circuit breaker or main circuit breaker (VCB). And a plurality of circuit breakers (MCCB) for supplying electric power supplied to each load facility or distribution box to the secondary side of the main circuit breaker (ACB) on the low voltage side. Integrated current and ground current detector (ZOCT) having an input / output terminal on which the device for detecting current, ground current, and temperature can be electrically coupled to the three-phase; It receives output signals of three-phase current and leakage current from ground fault current detector, and compares the data with the set value. Then, abnormality occurs in overcurrent, leakage and line temperature of the load equipment connected to the load. Optionally execute a trip command to the circuit breaker that supplies electricity to each load facility, and provide wired / wireless telephone notification for the breaking status and cause of the high-voltage main circuit breaker, the main circuit breaker, and the low-voltage distribution circuit breaker. It characterized in that it comprises a branch load controller (ZOR-controller).

The current and ground current detectors are directly connected to the secondary side of the current detector for detecting the three-phase current, the ground current detector for detecting the leakage current, and the circuit breaker (MCCB) connected to the load of the switchboard.

The signal converter may include an A / D converter for inputting data of a three-phase current, a leakage current, and a line detected by the current and ground fault current detectors connected to the respective loads and converting the data into digital signals; And a modulator for converting the digital signal converted by the A / D converter into a communication signal and outputting the communication signal.

The branch load control apparatus further includes a function of displaying and storing a related data value when the load is out of range due to an abnormality in the load, and notifying the user of the execution result by voice broadcasting and notifying the operator to the mobile phone of the execution result. do.

According to the number and switchgear having a fault line selection blocking function according to the present invention, the data at the time of the fault occurrence without damaging and affecting the entire power system by quickly shutting off electricity only when the fault line occurs when current and ground fault current of each load occur. As it stores the result, it is used as information for solving the cause, and it is a function to notify the user so that the problem can be promptly solved when the power supply is cut off when the circuit breaker trips. .

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. The terms or words used in this specification and claims are not to be construed as limiting in their usual or dictionary meanings, and the inventors may properly define the concept of terms in order to best explain their invention in the best way possible. It should be interpreted as meaning and concept corresponding to the technical idea of the present invention.

Therefore, the embodiments described in the specification and the drawings shown in the drawings are only the most preferred embodiment of the present invention and do not represent all of the technical idea of the present invention, various modifications that can be replaced at the time of the present application It should be understood that there may be equivalents and variations.

Figure 1 is a front view of the number, switchboard according to the present invention, Figure 2 is an enlarged view of the controller (MR, M, ZOR) and the controller according to the present invention. In addition, Figure 3 is a disconnection diagram of the male, switchboard according to the present invention, Figure 4 is a partially enlarged view of the "B" disconnection diagram of the male, switchboard according to the present invention.

As shown, the water and distribution panel of the present invention is composed of a high-voltage power supply unit (CS-1) and a low-voltage distribution unit (CS-2) (CS-3).

The high pressure power receiver CS-1 includes an automatic failure switchgear 12, an automatic failure switchgear controller 11, an instrument current transformer 13, an arrester 14, an instrument transformer 15, and a high pressure vacuum circuit breaker. 16) It consists of various high pressure equipment such as meter 17, digital protection meter 18, surge server 19, and current transformer 20, so that the high-voltage electricity imported from the power company is an automatic failure switchgear. It pulls in to the primary side of (12).

The high-voltage electricity supplied from the electric power company is an automatic switch of the main circuit breaker installed in the power receiving line when it enters the switchboard of the customer, and is supplied to the front of the automatic breaker switch (ASS) 12 installed to control the fault section. Is applied.

At this time, in order to confirm whether the front end of the automatic failure section switch (ASS) (12) is pressurized to the electric power detection device (VD) (10) integrally mounted to the automatic failure section switch 12 to the three-phase line When is pressed, the voltage signal is detected at the output terminal of the voltage detecting device (VD) 10 and the detected signal is connected to the automatic failure switchgear controller (ASS Controller) 11 and displayed on the three-phase LED display lamp. If any of the phases in the phase of the phase is missing, one of the three phase LEDs is not displayed.

Therefore, it can be seen that an image is formed on the high-voltage electric line.

At this time, a separate phase check circuit is configured inside the automatic fault switch controller (ASS Controller) 11 to display the phase loss display lamp, and by sending the phase output signal from the phase check circuit, the automatic fault section of the high voltage side main circuit breaker. By shutting off the switch 12 or the vacuum breaker (VCB) 16, it is possible to prevent the main circuit system accident of the switchboard due to the open phase and to protect the load due to the open phase.

In addition, since the high-pressure electric pressurization is indicated by the LED display lamp, it is possible to clearly identify whether the high-pressure electric pressurization is possible, so that the distribution board manager or the contractor can prevent the electric shock accident caused by the electric contact. .

According to the system sequence of the switchboard, if a short circuit accident or overcurrent occurs on the high voltage line at the rear of the automatic failure switchgear 12, a power fuse capable of protecting the circuit for each phase is integrally formed with the automatic failure switchgear 12. When a surge flows on a high voltage line applied from the KEPCO line, a lightning arrester (LA) 14 is configured to absorb and an instrument current transformer (MOF) 13 is provided to the system line to measure the amount of electricity used. Since the high-voltage electricity can not be directly measured, the secondary signal of the instrument current transformer (MOF) 13 is connected to the meter and metered, and the instrument transformer and the instrument current transformer are configured inside the voltage of the high voltage electricity. The electric signal is connected to the meter (DM, VARM) 17 according to the ratio of the current to measure the electricity consumption.

A vacuum circuit breaker (VCB) 16 capable of cutting off high-voltage lines is constructed, and when an abnormality occurs due to overcurrent, ground overcurrent, overvoltage, phase loss, etc. A digital protection relay (MR-Controller) 18 for controlling the vacuum circuit breaker (VCB) 16 in response to the electric signal of the CT 20 is constructed, and the voltage, current, power factor, power amount, temperature, Digital protection relay measuring instrument (MR-Controller) that has the function to control, judge, store information and communicate with the network system around, such as measurement indication of display, voice broadcasting notification, mobile phone notification, etc. 18) is configured.

A vacuum absorber (SA) 19 that absorbs abnormal voltage such as surge generated when opening and closing the vacuum circuit breaker (VCB) 16 that opens and closes the high-voltage main circuit line is located behind the vacuum breaker (VCB) 16. It is installed.

3, the CS-2 and CS-3 low voltage distribution units are constructed based on the transformer (TR) 22 (22-1), and the number of transformers according to the electricity consumption and purpose of the electric customer is shown in FIG. As determined, in the present invention, the concept of the number of switchboards including two transformers is the same as that of the transformer (TR) 22 (22-1). The switchgear is composed of a power fuse (PF) 21 for transformer overload protection and a transformer (TR) 22 for converting high-voltage electricity into a low-voltage commercial voltage, and an air circuit breaker (ACB) that interrupts the main circuit of the low-voltage line. (26) and low voltage line instrument voltage transformer (PT) (23) to detect the voltage signal, instrument current transformer (CT) (27) to detect the current signal to the digital instrument (M-Controller) (28) Measures and displays voltage, current, power factor, power level, temperature, etc. on low voltage line by receiving detected voltage and current signal And to perform the air circuit breaker (ACB) function of controlling (26) and correlated to store information for a network, determining a communication function. A forward capacitor (SC) 25 for protecting the transformer and a circuit breaker (MCCB) 24 for coupling the forward capacitor 25 with the main circuit.

FIG. 5 is a structure in which current and ground current detectors (ZOCTs) 31 and 31-1 are directly connected to secondary sides of a plurality of circuit breakers 30 and 30-1 that supply power from a low voltage switchgear to a load device. As shown in the internal wiring diagram of the current and ground fault current detector, the current and ground fault current detectors 31 and 31-1 have a CT for three-phase current detection and a ZCT for detecting leakage current and input terminals Ri, Si, Ti. It is equipped with L-shaped 3-phase CT and ZCT composed of, Ni and output terminals Ro, So, To, No. The current and ground fault current detectors 31 and 31-1 are connected to current and ground fault current detectors 31 and 31-1 at the secondary terminals of the circuit breakers 30 and 30-1. (31-1) The secondary terminal block is a structure in which a cable connected to a load can be directly connected.It is composed of three-phase current detection terminals (ir, is, it, in) and leakage current detection terminals (kl, kn). You lose. The signal detected by the three-phase current detection terminal and the leakage current detection terminal is sent to the signal converters 32 and 32-1 by a combination of a normal cable and a connector. The current and ground current detectors 31 and 31-1 may be divided into sizes of ZOCT 100, ZOCT 225, and ZOCT 400 in accordance with the frames of the circuit breakers 30 and 30-1.

A three-phase current signal and leakage current signal data received from the current and ground current detectors 31 and 31-1 are converted into communication signals by the signal converters 32 and 32-1, and a branch load control device (ZOR Controller) 33 (33-1), the branch load control device (33) (33-1) compares and analyzes with the reference set value, and the overcurrent leakage of each line is connected with the alarm stage to execute the alarm. If the setting value is out of range, execute the shunt trip command of the circuit breaker 30, 30-1 of each load, display and save the related execution data result, and notify the voice broadcasting notification and the mobile phone about the execution result. do.

The present invention saves the data result at the time of abnormality without damaging and affecting the entire power system by quickly shutting off electricity only when the current and ground fault current of each load occur, which is used as information for solving the cause and used as a circuit breaker It has a technical feature that is convenient to manage the operation of the power distribution equipment.

At this time, the automatic failure section switch 12 and the voltage detector 10 are mounted on the primary side to check whether electricity is drawn in. When the three-phase electricity is pressurized, a minute voltage is detected and detected at the output terminal of the voltage detector 10. The three-phase LED lamp is displayed by connecting electricity to the automatic failure switchgear controller (11) .If no electricity is applied even in one of the three phases, the phase display lamp operates and the NOR circuit inside the automatic failure switchgear controller (11). By blocking the automatic failure section switch 12 or the vacuum breaker 16 with the phase-off output signal, it can prevent the accident of the power system due to the phase open, and electricity is applied to the primary switch's primary side of the switchgear. In this case, it is possible to recognize whether it is pressurized by the display lamp, so that workers or managers can prevent electric shock accidents caused by electricity.

In addition, the low voltage distribution unit composed of CS-2 and CS-3 includes power fuses 21 and 21-1, transformers 22 and 22-1, transformers 23 and 23-1 for low voltage meters, and power distribution units. Circuit Breakers 24, 24-1, Fastening Capacitors 25, 25-1, Air Circuit Breakers 26, 26-1, Current Transformers for Low Pressure Gauges 27, 27-1, Digital Measuring Instruments (28) (28-1), tie breaker (29), circuit breaker (30) (30-1), strategic ground current detector (31) (31-1), signal converter (32) (32-1), branch load Devices such as the control devices 33 and 33-1 are configured in accordance with the system order of the low voltage distribution unit.

Figure 5 is a schematic diagram of the internal wiring of the current and ground current detector (ZOCT) according to the present invention.

As shown, the present invention is a structure that is directly connected to the secondary side of the circuit breaker (MCCB) connected to the load of the switchboard, to detect the CT for three-phase current detection, ZCT for leakage current detection and the voltage of each phase It is a device with a terminal for power supply and a power input terminal and a load output terminal. The current and ground fault detector specifications are shown in Table 1 below.

I / O FRAME CT rating ZCT Rating Voltage rating Remarks input Current and Ground Current Detectors 100 0-100 A 100AF Current and Ground Current Detectors 225 0-225 A 225AF Current and Ground Current Detectors 400 0-400 A 400AF Print Current and Ground Current Detector 50 ~ 400 0 to mA 0 to mA Other rating  1. Satisfy the rated specifications of general CT and ZCT (insulation breakdown, withstand voltage, etc.) 2. Ratings of input and output terminals suitable for each frame rating (current, mechanical strength).

To this end, the current and ground current detector includes a current detector for detecting a three-phase current, a ground current detector for detecting a leakage current, and an output terminal of a load side integrated with a circuit breaker (MCCB) connected to a load of a switchboard. It is preferable to be fastened directly to the secondary side of.

As shown, the present invention is a device for converting and outputting data such as three-phase current, leakage current, the line detected by the current and ground current detector connected to each load into a communication signal. To this end, the signal converter includes an A / D converter for converting the data of the three-phase current, leakage current and the line detected by the current and ground current detector connected to each load into a digital signal; And a modulator for converting the digital signal converted by the A / D converter into a communication signal and outputting the communication signal.

6 is a block diagram showing the number, switchboard according to the present invention, Figure 7 and Figure 8 is a flow chart showing the operation of the number, switchboard according to the present invention.

As shown, the present invention is composed of a plurality of circuit breakers (MCCB) 30, 30-1 for distributing and supplying electricity supplied to each load facility or distribution box to the secondary side of the main circuit breaker (ACB) on the low voltage side. An integrated current and ground fault current detector (ZOCT) 31, 31-1 having a three-phase CT, ZCT and an input / output terminal for electrically coupling it to a secondary side (load side) of the circuit breaker in the switchboard. And the three-phase current and leakage current provided from the current and ground current detectors 31 and 31-1, and the output signals of the signal converters 32 and 32-1. By comparing and analyzing the overcurrent and the leakage line temperature of the load equipment connected to the load and out of the range of the set value, the trip circuit breaker 30, 30-1 selectively supplies electricity to each load equipment. The branch load controller (ZOR-controller) 33 (33-1) for executing the Trip command Characterized in that it also.

The current and ground fault current detectors 31 and 31-1 may include a current detector CT for three-phase current detection, a ground fault current detector for leak current detection, and a circuit breaker MCCB connected to a load of a switchboard. Directly to the secondary side.

The signal converters 32 and 32-1 include an A / D converter for inputting data of three-phase current, leakage current, and line detected by the current and ground current detectors connected to each load and converting the data into digital signals; And a modulator for converting the digital signal converted by the A / D converter into a communication signal and outputting the communication signal.

The branch load control device (33) (33-1), if an abnormality occurs in the load and out of the range of the set value, displays and stores the relevant data value, and notifies the voice broadcast about the execution result and sends it to the operator through the mobile phone. It further includes a function to notify the facts.

As described above, the present invention has been described by way of limited embodiments and drawings, but the present invention is not limited to the above-described embodiments, which can be variously modified and modified by those skilled in the art to which the present invention pertains. Modifications are possible. Accordingly, the spirit of the present invention should be understood only by the claims set forth below, and all equivalent or equivalent modifications thereof will belong to the scope of the present invention.

1 is a front view of the number, switchboard according to the present invention

Figure 2 is an enlarged view of the controller (MR, M, ZOR) and controller according to the present invention

3 is a disconnection diagram of the male and the switchboard according to the present invention.

4 is an enlarged view of a portion “B” of FIG. 3 as a disconnection connection diagram of a male and a switchboard according to the present invention.

5 is a diagram illustrating the internal connection of a current and ground fault current detector (ZOCT) according to the present invention.

Figure 6 is a block diagram showing the number, switchboard according to the invention.

7 and 8 is a flow chart showing the operation of the number, switchboard according to the invention.

9A and 9B are block diagrams of a branch load control device (ZOR-Controllor) and a front viewer (FRONT VIEW).

<Description of the symbols for the main parts of the drawings>

10: Voltage Detect (VD: Voltage Detect)

11: ASS Controller

12: Automatic Section Switch (ASS: Automatic Section Switch)

13: transformer current transformer (MOF: Metering Out fit)

14: Lightning Arrester (LA)

15: PT (Potential Transformer)

16: Vacuum Breaker (VCB: Vacuunm Circuit Breaker)

17: Watt Hour Meter (VHM)

18: MR-controller (Metering Protection Relay-controller)

19: Surge Arrester

20: Current Transformer (CT)

21, 21-1: Power Fuse

22, 22-1: Transformer (TR)

23, 23-1: Low Potential Transformer (PT)

24, 24-1: MCCB (Mold Case Circuit Breaker)

25, 25-1: Factual capacitor (SC: Condenser)

26, 26-1: Air Circuit Breaker (ACB)

27, 27-1: Low Current Transformer (CT)

28, 28-1: Digital measuring instrument (M-controller: metering-controller)

29: T-ACB (Tie-Air Circuit Breaker)

30, 30-1: MCCB (Mold Case Circuit Breaker)

31, 31-1: Zero Over Current Transformer (ZOCT)

33, 33-1: branch load controller (ZOR-controller: Zero Over Current Relay-controller)

1 / CS: High Pressure Water Distributor

2 / CS, 3 / CS: Low Voltage Water Distributor

Claims (4)

In the low-voltage line of the low-voltage switchgear, a male and a switchgear composed of a plurality of circuit breakers (MCCB) for distributing and supplying electricity supplied to each load facility or distribution box to the secondary side of the main circuit breaker (ACB). An integrated current and ground current detector (ZOCT) with an input and output terminal to which the three-phase current, ground current, and temperature detection devices can be electrically coupled to the secondary side (load side) of the circuit breaker; When the output signal of the signal converter is supplied and the data is compared and analyzed, the overcurrent, leakage current, and line temperature of the load equipment connected to the load occur. The circuit breaker includes a branch load controller (ZOR-controller) that selectively executes a trip command to the circuit breaker and stores information on the interrupted state and cause of the low voltage circuit breaker. Having number, switchboard. The high-voltage power detector (VD) is installed integrally or separately with the switch in front of the main circuit switch of the receiving line, and the output power detection value is displayed on the three-phase power indicator lamp (LED) in the switch controller (ASS, LBS Controller). In the case of a phase open, an image display lamp is displayed, and an image output is sent out to cut off the main circuit breaker or the main circuit breaker (VCB), and the high voltage power detector (VD) is placed in front of the power switch of the switchgear. It can be configured as a single or separate unit, and it sends out the phase output when it is missing phase with the 3-phase power display lamp (LED) and the phase-out display lamp to switch controller (ASS, LBS controller) to cut off the main circuit switch or main circuit breaker. Can have a fault line tracking cut off function, switchboard. The method of claim 1, The current and ground fault current detector, Secondary side of the circuit breaker (MCCB) connected to the load of the switchboard with a three-phase current detector, a current and ground fault current detection device (ZOCT) for detecting the leakage current, and line temperature. Can, switchboard with a fault line tracking cutoff function, characterized in that directly fastened to. The method of claim 2, The power detected by the high voltage power detector (VD) is connected to a switch controller (ASS, LBS Cont rollor) to form a three-phase power display lamp and an open-phase display lamp in the switch controller, and send out the phase output to switch or main circuit breaker. Number, switchboard with a fault line tracking cut off function, characterized in that to cut off.

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