KR101059525B1 - Apparatus for stabilizing voltage and electric distribution board box using the same - Google Patents

Abstract

PURPOSE: An apparatus for stabilizing voltage and an electric distribution board box using the same are provided to supply rate current to a load by controlling voltage supplied from an electric power company without an additional automatic voltage controller. CONSTITUTION: In an apparatus for stabilizing voltage and an electric distribution board box using the same, a smart voltage stabilizer includes a multi-tap transformer(20), a multi contacting switch(40), and a controller thereof. The multi-tap transformer includes a primary coil and a secondary coil comprised of a plurality of multi-tap transformers The primary coil is connected to a circuit breaker(10) receiving power form an electric power company. The multi-tap transformer compares a voltage inducted in the primary coil with a reference voltage. The multi-tap transformer includes the secondary coil having a plurality of taps to boost and drop as much as a comparison result.

Description

Smart voltage stabilization device and electric distribution board using the same {APPARATUS FOR STABILIZING VOLTAGE AND ELECTRIC DISTRIBUTION BOARD BOX USING THE SAME}

The present invention relates to a smart voltage stabilization device and an electric distribution board using the same, and more particularly, the AC power supplied from the KEPCO side is automatically and precisely and stably adjusted, and outputs to the branch switch side to supply the rated power to the load. It relates to a smart voltage stabilization device and an electric distribution board using the same.

      In general, in order to use various electric appliances safely and safely, appropriate voltage, current, and power, rated voltage, rated current, and rated power must be supplied.

      At this time, the use of the device above the rated power is dangerous, but there is no great force in using below that, there is a limit of the power available for each electric appliance.

      This limit has a momentary limit and a limit when using it for a long time, and it is recommended to use the device below the rated power after setting the maximum power that can operate without any damage even if it is used for a long time. will be.

      Meanwhile, in Korea, power is supplied at 220 volts [V] ± 6% (207 [V] ~ 233 [V]) for single phase and 380 ± 10% (342 [V] ~ 4118 [V]) for three phase. In consideration of the characteristics of each region, most of them supply power with overvoltage of 220 [V] or more.

      Accordingly, as described above, an automatic voltage regulator (AVR) is mounted and used in a device requiring precision in order to efficiently control power supplied by overvoltage.

However, since the circuit for controlling the power is designed to be very complicated and the switch is configured using a semiconductor device, the automatic voltage regulator has a problem that the product is bulky and expensive, and a high frequency of failure occurs. Problems also arise.

Accordingly, the present invention has been made to improve the conventional problems as described above, the object is to stably regulate the AC voltage supplied from the KEPCO side through a multi-tap transformer and a multi-contact switch and a predetermined control means to supply to the load side It is to provide a smart voltage stabilization device and an electric distribution board using the same.

      Smart voltage stabilization device according to the present invention for achieving the above object, in the voltage stabilization device for stably controlling the AC voltage supplied from the KEPCO side output to the branch switch side, the power from the KEPCO side is drawn in It is connected to the parking terminal to be connected, and includes a secondary coil portion wound by a primary coil portion wound in accordance with the input voltage range, and a plurality of taps that can be increased or reduced by a difference after comparing with the set reference voltage A toroidal type multi-tap transformer; In the state where a plurality of contacts are provided so that each tab of the multi-tap transformer is connected to each other, one of the contacts is selectively connected to the busbars according to an external control signal, and supplies a regulated voltage to the branch switch side. A switch; In the state where the average value of the supplied voltage and the analyzed transformer value are set and stored, a predetermined control signal is output to output the rated voltage while the multi-contact switch is operated based on the range of the voltage value input through the parking terminal. It is configured to include a control means for applying;

      Preferably, the multi-tap transformer comprises one reference tap, four pressure reducing taps consisting of -3 [V], -6 [V], -9 [V], and 12 [V], and +3 [V]. ], +6 [V] is provided with two boosting taps, characterized in that consisting of a total of seven taps.

      At this time, the number of taps of the multi-tap transformer can be changed in various designs within the range of 2 to 15 depending on the use environment.

      Preferably, the multi-contact switch, the power supply is supplied from the MCCB and selectively switched to the bypass mode and the voltage control mode, the plurality of taps provided in the secondary coil portion of the multi-tap transformer is connected to each other A plurality of contacts arranged side by side in a state, a bus bar installed in parallel with a plurality of contacts spaced apart from the plurality of contacts so as to transfer power supplied through the interlock switch or any contact to the load side, and the bus bar And a shaft having a threaded pitch of a square type installed in a space between the plurality of contacts arranged side by side, and an encoder installed at one side of the shaft to be driven by a control signal from the control means to rotate the shaft. Driver consisting of a drive motor equipped with Characterized by; in state is configured to include a switch head that while moved by the rotation of the shaft according to the operation of the driver to interconnect any of the contact and the busbar such that the power of the contact points toward the supply busbars.

      More preferably, the multi-contact switch is characterized in that it is provided with an LED display for checking the state of the contact and the bypass mode operation of the interlock switch connected to each tap of the multi-tap transformer correspondingly.

      Preferably, the control means, the input unit for inputting the operating conditions of the device for voltage regulation, and measuring the voltage and current adjusted by the conditions input from the input unit, and the abnormal current such as low current or over current A detection unit for detecting a signal, an operation unit for calculating a control value so that the control unit performs bypass or automatic voltage control according to the data measured by the detection unit, and a storage for storing data input or measured by the input unit, the detection unit, and the operation unit The unit transmits power information input from the electronic watt-hour meter, operation conditions of the input unit, and various data stored in the storage unit to the external monitor for the user to check and receives a predetermined input signal from the user. A transmitter and a receiver for performing bidirectional communication in a directional manner; And a controller configured to control the multi-contact switch through a control value calculated by the calculator according to the operating condition input to the controller to control the entire apparatus so that a predetermined voltage can be supplied to the load side. .

      On the other hand, in the configuration of the electrical distribution panel using the smart voltage stabilization device as described above, the smart voltage stabilization to automatically stabilize the voltage from the parking short circuit supplied with power from the KEPCO side in the electrical distribution panel to output to the branch switch side. Device is provided; The smart voltage stabilization device is; A secondary coil part connected to the parking terminal and configured to have a primary coil part wound according to an input voltage range, and a plurality of taps wound up or down so as to increase or decrease pressure by a difference after comparing with a set reference voltage; A toroidal type multi-tap transformer; In the state where a plurality of contacts are provided so that each tab of the multi-tap transformer is connected to each other, one of the contacts is selectively connected to the busbars according to an external control signal, and supplies a regulated voltage to the branch switch side. A switch; In the state where the average value of the supplied voltage and the analyzed transformer value are set and stored, a predetermined control signal is output to output the rated voltage while the multi-contact switch is operated based on the range of the voltage value input through the parking terminal. It is configured to include a control means for applying;

According to the present invention made as described above, there is an effect that the rated power can be supplied to the load by precisely and stably adjusting the voltage supplied from the KEPCO without a separate automatic voltage regulator (AVR), so As a result, the performance and lifespan of the load can be improved and power consumption can be reduced.

1 is a block diagram schematically illustrating a configuration in which a smart voltage stabilization apparatus according to the present invention is applied to a distribution board;
2a and 2b is a view showing the configuration of a multi-tap transformer of the smart voltage stabilization apparatus according to the present invention,
3a and 3b is a view showing the configuration of a multi-contact switch of the smart voltage stabilization apparatus according to the present invention,
4 is a view showing the configuration of the control means of the smart voltage stabilization apparatus according to the present invention.

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

1 is a block diagram schematically showing a configuration in which the smart voltage stabilization device according to the present invention is applied to the distribution board. FIGS. 2A and 2B are views illustrating a configuration of a multi-tap transformer of the smart voltage stabilization device according to the present invention. Figure 3b is a view showing the configuration of the multi-contact switch of the smart voltage stabilization device according to the present invention, Figure 4 is a view showing the configuration of the control means of the smart voltage stabilization device according to the present invention.

First, the smart voltage stabilization device according to the present invention is implemented by stably adjusting the AC voltage supplied from the KEPCO side through a voltage stabilization device of a specific structure to be supplied to the load side at rated power.

According to the present invention, the smart voltage stabilization device for stably controlling the AC voltage from the KEPCO side to the branch switch 56 side is a toroidal multi-tap transformer 20 and the multi-contact switch 40 and for controlling the same. It comprises a predetermined control means 60.

The multi-tap transformer 20 is connected to the parking terminal 10 into which the electric power from the KEPCO side is drawn, and supplies the electric power to the primary coil part 22 and the voltage induced by the primary coil part 22. It is composed of a toroidal multi-tap transformer including a secondary coil part 24 having a plurality of taps wound so as to increase or decrease pressure by the difference after comparison with voltage.

That is, the multi-tap transformer 20 arbitrarily adjusts the decompression / step-up value according to the variable input voltage instead of the decompression / step-up tap changing method of a predetermined voltage value regardless of the voltage variation of the single phase or the 3-phase input from the outside. As compared to the conventional AVR tap method, the voltage is about 220 [V] ± 2% (216 [V] to 224 [V]) or 380 ± 3% (370 [ V] ~ 390 [V]) winding to adjust.

      At this time, in the embodiment of the present invention, the multi-tap transformer 20 includes four reference tabs and four -3 [V], -6 [V], -9 [V], and 12 [V]. A pressure reducing tap and two boosting taps composed of +3 [V] and +6 [V] are provided, and the total number of taps is composed of seven taps. The number of taps varies depending on the installation environment and conditions. Of course you can.

      In addition, as shown in Figures 2a and 2b, the multi-tap transformer 20 is composed of one primary coil portion 22, the secondary coil portion 24 and the interlock switch 26 on a single phase. In each of the three phases, each of the three primary coil parts 22, the secondary coil parts 24, and the interlock switch 26 is configured as a medium.

      In addition, the multi-contact switch 40 is a predetermined control signal from the control means 60 in a state in which a plurality of contacts 44 are provided correspondingly so that each tab of the multi-tap transformer 20 is connected to each other. In accordance with this, one contact point 44 is selectively connected with the busbar 26 to output an automatically regulated voltage.

      The multi-contact switch 40 is provided with power from the MCCB and the interlock switch 42 is selectively switched to the bypass mode and the voltage control mode, that is, the interlock switch 42 receives the power from the MCCB One line is directly connected to the busbar 46 side (in bypass mode) and the other line is connected to the transformer side (in voltage regulation mode).

      Accordingly, the interlock switch 42 can supply power directly to the busbar 46 while the switch connected to the transformer is switched OFF when a malfunction such as a coil or a multi-contact switch occurs.

      In addition, the multi-contact switch 40 is configured to be arranged in a state in which a plurality of contacts 44 side by side so that a plurality of tabs provided in the secondary coil unit 24 of the multi-tap transformer 20 is correspondingly connected to each other; In addition, the bus bar 46 is installed in parallel with a plurality of contacts 44 arranged side by side at a predetermined interval spaced in parallel to the power supplied through the interlock switch 42 or any contact 44 It is configured to deliver to the load side.

      In addition, a shaft 48 made of a threaded pitch of a square type is installed between the spaces between the plurality of contacts 44 and the busbars 46 arranged side by side, and at one side of the shaft 48. A driver 50 made of a drive motor equipped with an encoder is connected and installed to rotate the shaft 48 by a control signal from the means 60.

      In addition, the switch head 52 is installed on the shaft 48 in a movable state, and the switch head 52 is moved when the shaft 48 rotates according to the driving of the driver 50. Each tab of the transformer 20 interconnects any of the contacts 44 connected to the busbars 46 so that regulated power, decompressed or boosted, can be supplied to the busbars 46 through the contacts 44. Done.

      The detailed configuration of the multi-contact switch 40 is as shown in Figs. 3a and 3b.

      As shown, in the single phase, the interlock switch 42 is connected via two bus bars 46, and in the three phase, each interlock switch 42 and three interlock switches 42 are provided. Each bus bar 46 is installed so as to correspond.

      On the other hand, the multi-contact switch 40 is designed and configured so as to be configured by adding or subtracting according to the number of taps of the voltage, and the state of the contact 44 connected to each tab of the multi-tap transformer 20 correspondingly and The LED display unit 54 for checking whether the interlock switch 42 is in bypass mode operation is further configured.

In addition, the control means 60 is the multi-contact point based on the range of the voltage value input through the parking terminal 10 in a state in which the average value of the voltage supplied from the outside and the transformed value analyzed accordingly are set and stored. It is configured to generate a predetermined control signal to operate the switch 40, the transformer value is set based on the average value and the empirical value obtained from the distribution of the input voltage.

      To this end, the control means 60 measures an input unit 62 for inputting an operating condition of the device for voltage regulation, and a voltage and current adjusted through the conditions input from the input unit 62. A detection unit 64 for detecting an abnormal current such as low current or overcurrent, and an operation unit for calculating a control value so that the control unit 72 can perform bypass or automatic voltage adjustment according to the data measured by the detection unit 64 ( 66, a storage unit 68 in which data input or measured by the input unit 62, the detection unit 64, and the calculation unit 66 are stored, power information input from the electronic electricity meter 90, and the input unit 62. Operation conditions, various data stored in the storage unit 68 is transmitted to the external monitor 80 so that the user can check, and also bi-directional communication in a wired or wireless manner to receive a predetermined input signal from the user The multi-contact switch 40 is controlled by a control value calculated by the operation unit 66 according to the transmitter and receiver 70a and 70b and the operating condition input to the input unit 62 to perform a constant voltage to the load side. It is composed of a control unit 72 made up of a processor that controls the overall apparatus so that it can be supplied.

The transceivers 70a and 70b may be configured by wired RS-485 communication, wireless communication, RF, or ZigBee.

Next, the operation of the present invention as described above will be described in detail as follows.

      First, in order to stably adjust the voltage supplied from the KEPCO side through the smart voltage stabilization device according to the present invention to supply to the load side at the rated power, it is supplied from the KEPCO side to single-phase 220 [V], three-phase 380 [V]. Among the measured voltage values, the above and below values are collected to obtain an average value, and then analyzed by various methods to set the transformer value.

      When the transformer value is set, the reference, the reduced pressure, the boosted tap, and the like of the multi-tap transformer 20 are designed based on this, and the design of the tap of the multi-tap transformer 20 varies depending on the measured value. Can be designed.

      In addition, an operation condition for voltage regulation is input to the input unit 62 of the control unit 60, and the calculation unit 66 performs calculation based on the voltage and current values detected from the detection unit 64 based on this. In order to control the device through the control unit 72 is performed.

      That is, as described above, when power is supplied from the KEPCO side through the parking terminal 10 in the state of configuring the smart voltage stabilization device according to the present invention, the detection unit 64 of the control means 60 is the input unit 62 In addition to measuring the adjusted voltage and current through the condition value input from the), and to measure the abnormal current, such as low current or overcurrent, the operation unit 66 is predetermined based on the measured value of the detection unit 64 A predetermined control value is calculated to generate a control signal.

      Accordingly, the control means 60 transmits a predetermined control signal for voltage regulation calculated by the calculation unit 66 to the multi-contact switch 40 under the control of the control unit 72. Accordingly, the multi-contact switch As the driver 50 of the 40 is driven to rotate the shaft 48, the switch head 52 of the plurality of contacts 44 of the control means 60 in accordance with the rotation of the shaft 48. The movement is made to the designated contact 44 side according to the control signal.

      Therefore, as the switch head 52 is controlled by the operation value from the control means 60, the power supplied through the parking short circuit 10 is a reference tap, a decompression tap, and a boost tap of the multi-tap transformer 20. As the voltage is reduced or increased through the bus bar 46 and the branch switch 56, the load side can be supplied at rated power.

      At this time, the interlock switch 42 of the multi-contact switch 40 performs a bypass function of directly outputting the power supplied from the MCCB to the busbar 46 when an abnormal state occurs in the device. Is displayed through the LED display unit 54, so that the user can take appropriate measures after visually confirming.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the scope of the appended claims.

In addition, although the present invention has been described with reference to the embodiment of the smart voltage stabilization device in the state installed in the distribution panel 100, as shown in Figure 1, the smart voltage stabilization device according to the present invention is expensive to be applied to a special equipment It can be used for various purposes such as replacing the automatic voltage regulator (AVR).

10: short-term parking, 20: multi-tap transformer,
22: primary side coil portion, 24: secondary side coil portion,
40: multi-contact switch, 42: interlock switch,
44: contact point, 46: busbar,
48: shaft, 50: screwdriver,
52: switchhead, 54: LED display,
56: branch switch, 60: control means,
62: input unit, 64: detection unit,
66: arithmetic unit, 68: storage unit,
70a, 70b: transmitter and receiver, 72: controller,
80: external monitor, 90: electronic meter
100: overall distribution.

Claims (6)

In order to stably control the AC voltage supplied from the KEPCO side and output it to the branch switch side, the primary coil part connected to the parking terminal into which the electric power from the KEPCO side is drawn and wound according to the input voltage range, and the set reference voltage A toroidal type multi-tap transformer including a secondary coil part including a plurality of coils wound so as to increase or decrease pressure by a difference therebetween; In the state where a plurality of contacts are provided so that each tab of the multi-tap transformer is connected to each other, one of the contacts is selectively connected to the busbars according to an external control signal, and supplies a regulated voltage to the branch switch side. A switch; A predetermined control to output the rated voltage while the multi-contact switch is operated on the basis of a range of voltage values input through the parking terminal in a state in which an average value obtained from a distribution of supplied voltages and a transformer value set thereon are stored; A voltage stabilization device comprising a; control means for applying a signal, comprising:
The multi-contact switch,
Interlock switch supplied with power from MCCB and selectively switched to bypass mode and voltage control mode,
A plurality of contacts configured to be arranged side by side in a state in which a plurality of tabs provided in the secondary coil part of the multi-tap transformer are connected to each other;
A bus bar installed in parallel with the plurality of contacts at a predetermined interval so as to transfer power supplied through the interlock switch or any contact point to the load side;
A shaft having a screw pitch of a square type installed in the space between the busbar and the plurality of contacts arranged side by side;
A driver comprising a drive motor installed at one side of the shaft and equipped with an encoder to rotate the shaft while being driven by a control signal from the control means;
A switch head configured to be connected to an arbitrary contact point and a bus bar while being moved by the rotation of the shaft according to the driving of the driver in a state of being installed on the shaft so that the power of the corresponding contact point is supplied to the busbar side; Smart voltage stabilizer. delete delete The method of claim 1,
The multi-contact switch is a smart voltage stabilization device, characterized in that the LED display for checking the state of the contact and the bypass mode operation of the interlock switch connected to each tap of the multi-tap transformer correspondingly. The method of claim 1,
Wherein,
An input unit for inputting an operating condition of a device for voltage regulation;
A detection unit for measuring an adjusted voltage and current based on a condition input from the input unit and detecting an abnormal current such as low current or over current;
An operation unit which calculates a control value so that the control unit can perform bypass or automatic voltage adjustment according to the data measured by the detection unit;
A storage unit for storing data input or measured by the input unit, the detection unit, and the calculation unit;
The power information input from the electronic electricity meter, the operating conditions of the input unit, and various data stored in the storage unit are transmitted to the external monitor for the user to check, and bi-directionally in a wired / wireless manner to receive a predetermined input signal from the user. A transmitter and receiver for performing communication;
And a controller configured to control the multi-contact switch through a control value calculated by the operation unit according to an operation condition input to the input unit to control the entire apparatus so that a predetermined voltage can be supplied to the load side. Smart voltage stabilization device. delete

Images