KR101030562B1 - The automatic controling way of the not-equivalent panelboard - Google Patents

Abstract

PURPOSE: A parallel automatic controller of removing the not-equivalent of a distribution board is provided to improve a power factor and protect damage to a power distribution facility by improving the not-equivalent of a load. CONSTITUTION: In a parallel automatic controller of removing the not-equivalent of a distribution board, an phase input unit outputs a power line to a matrix unit. The output line outputted form the matrix unit is inputted to a circuit breaker which is arranged in a load. The matrix unit selects an input lien and an output line by a magnetic switch. A main controller turns on the contact of a magnetic switch.

Description

Switchboard phase imbalance elimination parallel operation automatic control controller {The automatic controling way of the not-equivalent panelboard}

The present invention relates to a water substation facility for supplying power by building unit or plant unit by lowering the special high voltage of 6,600V or more and 22,900V class to low pressure of 380V or 220V.

The present invention relates to a closed switchgear, which is divided into a high-voltage board and a low-pressure board according to a system order in a grounded cubicle (excluding metal), a breakdown section automatic switch (LBS), an arrester, a high-pressure fuse, and a transformer for instrumentation. (MOF), transformer (TR), transformer for instrument (PT), transformer for instrument (CT), and storage battery are installed, and the circuit breaker (MCCB), various measuring devices, and digital control device are built in the low pressure plate. Each device is embedded in a unit cubicle to perform its own unique function in an independent space.

The present invention is to solve the problems caused by load imbalance for each phase (R, S, T) that occurs depending on the use of the load (electric device) when supplying power to the load (electric device) through the switchboard. It is to improve the efficiency by supplementing the unbalance of the loaded load with the controller, and when the parallel operation (operating two or more transformers), the turns ratio and polarity of the transformer must be matched. This happens to solve this problem.

In the three-phase four-wire power supply method, when 220V is supplied to the load through R phase-N phase, S phase-N phase, and T phase-N phase, the load amount varies depending on the phase depending on the use of power by load. In this case, the power factor is lowered, and a partial overload condition is caused in each phase winding of the power supply transformer, thereby causing a problem such that the power supply transformer is burned out.

Therefore, if the load unbalance rate is measured and unbalanced above the set value, it is possible to prevent the power factor drop and burnout of the power supply transformer by performing maintenance work for correcting. The load unbalance rate should be determined, and after installation of the facility, if the manager does not check the load unbalance rate from time to time, the load unbalance may not be detected, resulting in a power factor drop and damage to the power supply transformer.

In addition, in order to efficiently operate the transformer, in order to install a plurality of transformers in parallel operation, the conditions and characteristics of the parallel operation must be identical. Otherwise, the transformer may be burned out and the risk of explosion accident occurs.

When multiple transformers are installed and parallel operation (TIE operation), the characteristics of the transformer, such as the turns ratio and frequency of the transformer, must be the same. Therefore, it is common to select a transformer of the same model of the same manufacturer. .

If the characteristics are different, there are many risk factors such as burnout and heat generation of the transformer, and in spite of the many advantages of parallel operation, field maintenance workers are reluctant to parallel operation.

In addition, the actual demand of the load varies according to the seasons (the final terminal load is not uniform for each phase. For example, the power supply of three computers in the office is considered in each phase (A, B-R-R phase) , C, D-S phase, E, F-T phase), but when Mr. A leaves the office, the R phase decreases the load and the rest becomes relatively unbalanced. In view of the above extreme phenomenon, the phase imbalance is greatly affected by season and time zone, and the phase imbalance is inevitable.

In addition, minimizing no-load losses by simply changing the capacity of the transformer.

In addition, the capacity of the circuit breaker and the capacity of the load are simply matched with each other.

The present invention solves the above problems by sharing the load without affecting mutual interference even if the characteristics of the plurality of transformers are different in order to solve the above problems.

In addition, in order to reduce the no-load operation loss of the transformer, it is possible to remove the no-load loss of the transformer and simply increase the capacity by operating the combination of the three-phase transformer and the single-phase transformer or the three-phase transformer in parallel for each load.

In addition, the phase imbalance is eliminated by selectively controlling the load for each phase.

In addition, the load and breakout period selections are simply changed through a microprocessor or server.

1. The present invention is fundamentally different from the technique of simply solving the parallel operation or the technique of measuring the phase imbalance and eliminating the phase imbalance with respect to the prior art. It is the first invention that a simple addition and parallel operation of a transformer having different characteristics is possible.

2. Parallel operation of the transformer is possible even if the characteristics of the transformer do not match.

3. It eliminates the risk of loss and accident caused by transformer characteristics, frequency unbalance, etc. in parallel operation.

4. Even if the transformer characteristics are different, it is possible to simply increase the transformer capacity.

5. Improvement of phase imbalance of load prevents power factor improvement and burnout of power distribution equipment.

In particular, the phase imbalance can be immediately and simply improved in consideration of the reality that the load demand for each phase is varied according to seasons and time zones differently from the prior art.

6. The capacity and load of the circuit breaker can be changed simply by wiring the matrix circuit through the microprocessor or the server.

7. The wiring between the circuit breaker and the load can be easily changed.

1 is a schematic diagram of a matrix circuit having a magnetic switch as a contact point for understanding the present invention.
2 is a schematic diagram of a three-phase transformer wired to a switchboard phase unbalance parallel operation automatic control controller and a control method simplified diagram consisting of a matrix circuit having a magnetic switch as a contact point to remove phase imbalance;
3 is a schematic diagram of a three-phase transformer for parallel operation in addition to the automatic control controller and control method for parallel operation of a switchgear phase unbalance that consists of a matrix circuit having magnetic switches as a contact point.
Figure 4 is a simplified diagram of the present invention that can improve the phase load imbalance and simply increase capacity
5 is a simplified diagram showing the load vectors in the center of gravity to understand the improvement of phase load imbalance.
Figure 6 is a simplified diagram showing a simplified block diagram of the control system of the present invention
7 is a simplified illustration of a logic flue chart that derives a combination of phases and loads in which phase imbalance of the main control portion is minimized.
8 is a schematic diagram of load wiring in which phase imbalance is minimized to one three-phase transformer;
9 is a simplified diagram of load wiring in which phase imbalance is minimized using two three-phase transformers.
10 is a simplified diagram for simply changing the wiring between the load and the wiring interruption period;
11 is an exemplary view showing that only some of the loads can be variably selected and the others can be fixedly operated.

The high voltage (6,600V or more and 22,900V) drawn from the Korea Electric Power Corporation through the high voltage inlet is introduced into the transformer (TR) through the automatic failure switch (LBS), lightning arrester, high voltage fuse, and instrument transformer (MOF) in the high voltage board. When converted into low voltage and introduced into the low voltage plate, the common power supply of AC 220V, single phase 380V, three phase 380V is supplied to the load through an earth leakage breaker, wiring breaker, current transformer, terminal block, etc. in the low platen cubicle. DC 110V is supplied to the low platen through the storage battery in the ground, and the low platen is driven by DC 110V driving power to drive various automatic control devices and measuring devices, and separately installs an uninterruptible power supply (UPS) to cope with power failure. It has a normal switchboard configuration.

The main controller of the automatic control controller and control method of the parallel distribution elimination of the switchboard is a server-class microprocessor based on the Windows XP operating system.

A microprocessor is a TTL or CMOS IC that operates only on certain characteristics, whereas a microprocessor allows an administrator to inject a program into the processor to achieve the desired operating characteristics. The microcontroller for the entire control program and operation is also called the motherboard (MOTHERBOARD) or the motherboard (MAINBOARD).

In the present invention, it is not related to the amount of current flowing through the neutral line (N phase).

In the known prior art, a method of measuring the phase unbalance by measuring the amount of current flowing through the neutral line (N phase) is used, but the present invention does not measure or use the amount of current in the neutral line (N phase).

In particular, the neutral line (N phase) has no specificity with the present invention, and in the circuit configuration on the drawing, the N phase is not shown in the drawing in common, and the lines are indicated by the phases for the convenience of understanding.

In other words, measuring the degree of phase imbalance is meaningless in the present invention, because it is a technique that puts the most important 'combination of load' to minimize the phase imbalance.

In the present invention, 'combination of loads' is the biggest feature, and the second main feature is related to the addition or combination of transformers.

It will be described in detail with reference to the drawings.

1 is a schematic diagram of a matrix circuit having a magnetic switch as a contact for understanding the present invention.

An embodiment of the present invention is based on a matrix circuit configured to form a matrix for the X-Y axis and to obtain an intersection point in two dimensions through ON / OFF selection of the magnetic switch.

2 is a schematic diagram of a three-phase transformer connected to a three-phase transformer in a switchboard phase unbalance parallel operation automatic control controller and control method consisting of a matrix circuit having a magnetic switch as a contact to remove phase imbalance. It is a simplified diagram to understand the whole.

3 is a schematic diagram of a three-phase transformer for parallel operation in addition to a control panel phase imbalance parallel control automatic control controller and a control method of a matrix circuit having a magnetic switch as a contact point. It is a simplified diagram showing an example in which parallel operation is safe and simple because there is no mutual interference between transformers for load.

The circuit is composed of a magnetic switch so that only one phase is connected to one load. There is no short circuit, and the reason for not adding a new transformer in the vertical axis is to minimize the volume.

4 is a simplified diagram of the present invention that can improve the phase load imbalance and simply increase the capacity, by adding a single-phase transformer for capacity expansion, the single-phase transformer compensates for the severe phase imbalance, and the single-phase transformer bears a part of the total load. As a result, one embodiment of the configuration that simply solves the phase imbalance and the capacity expansion at the same time.

Fig. 5 is a simplified diagram representing the load vector for understanding the improvement of phase load inequality as the center of gravity. When the load is heavily loaded on the T phase as before the T phase compensation, the center of gravity of the maximum load vector (10), that is, the center of gravity of the equilateral triangle The distance between the center of gravity (11) of the load vector of the load (T phase is a relatively heavy load) is greatly increased, reducing the power factor as a whole and shortening the life of the transformer.

However, when reconstructing the load sharing for each phase or sharing the T phase with a plurality of transformers, such as after T phase compensation, the actual load (T phase has a relatively large load in the center of gravity of the maximum load vector (10), that is, the equilateral triangle) The distance between the load vector center of gravity (11) of the load is narrowed, thereby improving the power factor as a whole and improving the life of the transformer.

FIG. 6 is an exemplary embodiment schematically illustrating a control system of a main controller in a simplified block diagram illustrating a control system of the present invention.

7 is a simplified illustration of a logic flue chart that derives a combination of loads for each phase in which phase imbalance of a main control portion is minimized. The program is a generalized logic program with a logic chart that minimizes standard deviation from a data group.

8 is a schematic diagram of a load wiring to minimize phase imbalance with one three-phase transformer.

FIG. 9 is a simplified diagram for understanding that a transformer having different characteristics may be used because phase imbalance is minimized and grids are separated by load when two three-phase transformers having different characteristics are operated in parallel.

FIG. 10 is a simplified diagram in which a matrix unit is added to a load side so that wiring can be easily changed between a circuit breaker having various rated capacities and various loads.

11 is an exemplary view showing that only some of the loads can be variably selected, and the others can be fixedly operated.

As an example, in the case of a load (computer load) that may cause damage to a device or data loss due to switching of power, the wire is not directly connected to the circuit breaker via the matrix part but directly to the load through the circuit breaker. It is a simple expression that only a load such as a light load that is not affected by the changeover can be configured to minimize phase imbalance through the matrix part.

It will be described in detail through the table below.

As shown in Table 1, 37A current is supplied to the load through the R1-5 circuit breaker (MCCB), and 35A is loaded through the S1-5 wiring breaker (MCCB). If the current of 27A is supplied to the load through the circuit breaker (MCCB) of T1 to 5 and wired to T phase, R5 and T3, S2 and T2 circuit breaker (MCCB) The replacement will resolve the phase imbalance as shown in Table 2.

Award category MCCB No Load Phase load Load inequality

R

R1 7A

37A



+ 12%

R2 8A R3 5A R4 8A R5 9A

S

S1 5A

35A



+ 6%

S2 8A S3 6A S4 8A S5 8A

T

T1 5A

27A



-18%

T2 6A T3 5A T4 5A T5 6A

Award category MCCB No Load Phase load Load inequality

R

R1 7A

33A


0%

R2 8A R3 5A R4 8A T3 5A

S

S1 5A

33A



0%

T2 6A S3 6A S4 8A S5 8A

T

T1 5A

33A



0%

S2 8A R5 9A T4 5A T5 6A

Hereinafter, the claims will be described in detail.

In one embodiment,

It consists of transformer, phase current transformer, load current transformer, phase input part, matrix part, wiring breaker and main control part.

The power line output from the terminal block of the transformer low voltage part is passed through the phase current transformer and input to the phase input part.

The phase input unit is a phase input unit that receives a power line and branches the outputted power to the matrix unit.

The output power line output from the matrix part is input to the circuit breaker wired for each load (under the load) via the load transformer.

The matrix unit comprises an input line branched through the phase input unit and an output line wired to the circuit breaker constitute an XY matrix circuit (a matrix circuit composed of X and Y axes intersecting) within the matrix unit, and magnetic switches between matrix cells. It is a matrix part that can be wired by using a magnetic switch.

9 illustrates an embodiment in which the matrix unit supplies power to each phase input of the three-phase transformer by selection of a magnetic switch for each load.

In other words, when the phase of one transformer is set to R1, S1, T1, and the phase of two transformers having different characteristics is R2, S2, T2, the power of each load is received through the circuit breaker (MCCB) by receiving the inputs of the first transformer and the second transformer. It shows an example of receiving power supply. It is a simple example that shows no problem even if transformers having different characteristics are used.

In this case, the phases R1, S1, T1, R2, S2, and T2 of the transformer may be replaced by six single-phase transformers, which is the main technology of claim 12.

In conclusion, in the above case, when the capacity of the three-phase transformer is insufficient, parallel operation is possible by additionally configuring a three-phase transformer that does not need to have the same characteristics as shown in FIG. 9.

This is because it is not a conventional method of increasing the capacity by connecting transformers of the same characteristics in a manner of receiving power by selecting a transformer for each load.

The main feature of the present invention is that the operation of the phase imbalance is minimized for each load, and at the same time, the transformer and the phase can be independently wired for each load.

The main control part composed of the microprocessor is the main control part that connects the magnetic switch to the ON contact point to connect the circuit breaker wired by the load and the phase input part to minimize the phase imbalance by receiving the current amount information of the load transformer and the current amount of the phase transformer.

Referring to Table 1, the phase imbalance is minimized in the main control part, and the main control part receives a current amount information of at least one load transformer to calculate a total load amount;

As an example, when the current amount information of 7, 8, 5, 8, 9, 5, 8, 6, 8, 8, 5, 6, 5, 5, 6 amp is received, the total load amount is calculated to be 99 amps.

Calculating phase loads for each phase by substituting the current amount information received in the first step for each of R phases, S phases, and T phases;

In one embodiment, R, 7, 8, 5, 8, 9 amps are substituted for R phase load (current) is 37 amps, S, 5, 8, 6, 8, 8 amps are substituted for S phase ( The amount of current) is 35 amps, and 5, 6, 5, 5, 6 amps is substituted for T phase, and the load amount (current amount) of T phase is 27 amps.

The average load divided by 3 is 3 amperes to compare the phase load.

When the administrator input value is 1 amp, the administrator sets the manager input value in the microprocessor of the main control part. Since the phase load is 1 amp or more, the process returns to the above step 2 (return), and the current amount information is phased again in step 2. Substituting and repeating, if the phase imbalance is less than the manager input value (find the phase load in Table 2) or less than the manager input value, the magnetic circuit switch of the matrix part is connected to the wiring breaker corresponding to the current amount information entered for each phase. 3 is a step of connecting the ON contact connection wiring; automatic control control method for parallel operation of eliminating the disparity of the distribution panel.

The process of minimizing the phase imbalance is not limited in the present invention as various methods are applied according to a method of writing a computer program, a kind of program, and the like.

The main control unit is divided into three phase groups that minimize the phase imbalance by receiving the current amount information of the load current transformer, thereby driving the magnetic switch in the matrix unit. Unbalance elimination parallel operation automatic control controller and control method.

When the administrator input value is set to 1 amp, the manager input value is explained in detail. If 33A is equally found for each phase, there is no problem, but if the total load is 100A, the phase imbalance is not sufficient. Since it can be 33A, 33A, 34A to be minimized, 'if the manager input value is 1 amp' means that the maximum difference between the phase loads is within 1A, that is, up to 1A, the difference between 33A and 34A.

As an example, when the manager input value is 2 amps, the phase current value of the 'phase imbalance equal to or less than the manager input value' may be found to minimize the phase imbalance such as '30A, 30A, 32A'.

In summary, the phase input unit includes a transformer, a phase current transformer, a load current transformer, a phase input unit, a matrix unit, a circuit breaker, and a main control unit, and receives power from the transformer low voltage unit terminal block through the phase current transformer to branch and outputs it to the matrix unit; An output line output from the matrix unit is input to a wiring breaker wired for each load via a load current transformer; An input line branched through the phase input unit and an output line wired to the circuit breaker form an XY matrix circuit in the matrix unit, and the matrix cells are wired by a magnetic switch to select and wire the input line and the output line with the magnetic switch. Matrix portion; The main control portion composed of a microprocessor includes a main control portion for connecting the magnetic switch to the ON contact point to connect the circuit breaker wired for each load and the phase input unit to minimize phase imbalance by receiving the current amount information of the load current transformer and the current amount information of the phase current transformer; The main control unit is divided into three phase groups that minimize the phase imbalance by receiving the current amount information of the load current transformer, thereby driving the magnetic switch in the matrix unit. Unbalance elimination parallel operation automatic control controller.

In one embodiment,

A phase input part composed of a transformer, a load current transformer, a phase input part, a matrix part, a circuit breaker, and a main control part, and receiving and branching a power line from the transformer low voltage part terminal block to output to the matrix part; The output line output from the matrix portion is input to the wiring breaker wired to the load via the load current transformer; An input line branched through the phase input unit and an output line wired to the circuit breaker form an XY matrix circuit in the matrix unit, and the matrix cells are wired by a magnetic switch to select and wire the input line and the output line with the magnetic switch. Matrix portion; The main control unit comprising a microprocessor includes a main control unit for connecting the magnetic switch to the ON contact to connect the circuit breaker wired for each load and the phase input unit to minimize the phase imbalance by receiving the current amount information of the load transformer; The main control part is divided into phase group which minimizes phase imbalance by receiving the current information of load current transformer, and operates the magnetic switch in the matrix part. It is an automatic control controller.

In one embodiment,

A phase input part composed of a transformer, a load current transformer, a phase input part, a matrix part, and a magnetic switch, which receives a power line from the transformer low voltage part terminal block and branches it to output to the matrix part; The output line outputted from the matrix portion is input to the wiring breaker wired to the load via the load current transformer; An input line branched through the phase input unit and an output line wired to the circuit breaker form an XY matrix circuit in the matrix unit, and the matrix cells are wired by a magnetic switch to select and wire the input line and the output line with the magnetic switch. Matrix portion; It is an automatic control controller for parallel operation of elimination of phase imbalance in elimination of distribution of phase imbalance in which the circuit breaker wired by load and the magnetic input switch are connected to the ON contact point to connect the phase input part to receive the current amount information of the load transformer are minimized.

In one embodiment,

It is composed of at least one transformer, phase current transformer, load current transformer, phase input part, matrix part, wiring breaker, main control part, and branched by receiving power line wired from low voltage part terminal block to at least one transformer through phase current transformer. A phase input unit for outputting; The output line outputted from the matrix portion is input to the wiring breaker wired to the load via the load current transformer; An input line branched through the phase input unit and an output line wired to the circuit breaker form an XY matrix circuit in the matrix unit, and the matrix cells are wired by a magnetic switch to select and wire the input line and the output line with the magnetic switch. Matrix portion; The main control part composed of microprocessor receives magnetic current of load current transformer and current transformer current information by transformer, and inputs and outputs 1: 1 by input and output so that phase imbalance is minimized by transformer. A main control unit wiring the ON contact; The main controller receives the current information of the load transformer and divides it into three phase groups in which phase imbalance is minimized for each transformer, and drives the magnetic switch in the matrix part to form a 1: 1 wiring circuit between inputs and outputs between the three phases. A switchboard phase unbalance elimination parallel operation automatic control controller characterized by a main control unit.

In one embodiment,

It consists of three phase transformer, single phase transformer, phase current transformer, load transformer, phase input part, matrix part, wiring breaker, main control part, and inputs and branches through power transformer wired from low voltage part terminal block of three phase transformer and single phase transformer through phase current transformer. A phase input unit outputting the matrix unit; The output line outputted from the matrix portion is input to the wiring breaker wired to the load via the load current transformer; An input line branched through the phase input unit and an output line wired to the circuit breaker form an XY matrix circuit in the matrix unit, and the matrix cells are wired by a magnetic switch to select and wire the input line and the output line with the magnetic switch. Matrix portion; The main control part composed of microprocessor receives input current information of load transformer and current transformer of phase transformer and minimizes the phase imbalance of three-phase transformer. A main control unit that shares some loads with the single-phase transformer; The main controller receives the current information of the load transformer and divides it into three phase groups to minimize the phase imbalance of the three-phase transformer, and drives the magnetic switch in the matrix to configure the wiring circuit with 1: 1 input and output between loads for each phase. It is an automatic control controller for parallel operation of eliminating phase imbalance in the switchgear, which is composed of a main controller composed of microprocessors that share some loads with a single phase transformer.

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In one embodiment,

In the above, the magnetic switch may be replaced by any one of a wiring switch, a circuit breaker, a reed switch, a selector switch, a push button switch, a sliding switch, a toggle switch, a digital switch, a relay, or a solid state relay. It is an automatic control controller.

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In one embodiment,

At least one single-phase transformer, single-phase transformer-side current transformer, load-side current transformer, input section, matrix section, wiring breaker, main control section, the power line wired from the low-voltage terminal terminal of at least one single-phase transformer through the single-phase transformer side current transformer An input unit for receiving and branching the output to the matrix unit; The output line outputted from the matrix portion is input to the circuit breaker wired to the load via the load side current transformer; The matrix part is connected to the input line branched through the input part and the output line wired to the wiring breaker constitutes an XY matrix circuit in the matrix part, and the matrix cells are wired by the magnetic switch, so that the input line and the output line are selected as the magnetic switch by 1: 1. A matrix unit capable of wiring; The main controller portion composed of the microprocessors is programmed with the transformer utilization maximum value and the minimum value into the microprocessor; The main control part receives current amount of current transformer and current value of transformer current transformer for each single-phase transformer and turns on the magnetic switch so that each transformer is connected to the circuit breaker and the phase input unit wired to the load uniformly based on the average value of the total current. Connecting and wiring, and if the utilization of each transformer is more than the maximum configuration of the single-phase transformer further, if less than the minimum to eliminate the single-phase transformer step by step to minimize the no-load loss; The main controller is a switchboard phase unbalance elimination parallel operation automatic control controller which includes a main processor composed of a microprocessor constituting a wiring circuit connecting the input unit and the circuit breaker so that the load is equalized for each single-phase transformer by driving the magnetic switch in the matrix unit.

In other words, if the capacity of the transformer is insufficient, simply add a transformer, change the load wiring, and increase the transformer capacity. In the related art, if a transformer having the same characteristics is connected in parallel, the present invention is not necessarily the same transformer. In addition, by changing the load wiring, the capacity of the transformer is simply increased, and when the load is less, the added transformer is removed to minimize the no-load loss.

In one embodiment,

At least one single-phase transformer, single-phase transformer-side current transformer, load-side current transformer, input section, matrix section, wiring breaker, main control section, the power line wired from the low-voltage terminal terminal of at least one single-phase transformer through the single-phase transformer side current transformer An input unit for receiving and branching the output to the matrix unit; The output line outputted from the matrix portion is input to the circuit breaker wired to the load via the load side current transformer; An input line branched through the input unit and an output line wired to the wiring breaker constitute an XY matrix circuit in the matrix unit, and the matrix cells are wired by magnetic switches so that the input lines and output lines can be selectively wired by the magnetic switch. Matrix portion; The main control part receives the current amount of the current transformer of the load side transformer and the current amount of the transformer side transformer for each single phase transformer, and turns on the magnetic switch to connect the circuit breaker wired to the load with the phase input unit so that the load side circuit breaker can select the single phase transformer. To; Main controller is a switchboard phase unbalance elimination parallel control automatic control controller which features a main controller composed of a microprocessor which forms a wiring circuit connecting the input unit and the circuit breaker to drive the magnetic switch in the matrix unit so that the load can be selected and wired for each single-phase transformer. .

In one embodiment,

It is composed of transformer, phase current transformer, load current transformer, phase input part, front matrix part, rear stage matrix part, wiring breaker, main control part. ; An output line output from the front end matrix unit is input to a wiring breaker wired for each load via a load current transformer; The input matrix branched through the phase input unit and the output line wired to the circuit breaker constitute an XY matrix circuit in the front matrix unit, and the matrix cells are wired by magnetic switches so that the input lines and output lines are selected by magnetic switches. Shear matrix unit capable of; The rear-end matrix part comprises an X-Y matrix circuit in the matrix part of the output line and the load of the circuit breaker, and the matrix cells are wired by the magnetic switch, so that the rear-end matrix part can select and wire the output line and the load of the circuit breaker by the magnetic switch; The main control part composed of microprocessor receives the current amount of load current transformer and the current amount information of each phase current transformer to turn on the magnetic switch in the matrix part to connect the circuit breaker wired by load so that the phase imbalance is minimized and the phase input part. A topic keyword to choose from; The main control part receives the current information of the load transformer and divides it into three phase groups to minimize phase imbalance, and drives the magnetic switch in the matrix to configure the wiring circuits between the three phases and to select and configure the circuit breakers and the circuits between the loads. It is an automatic control controller for parallel operation of eliminating phase imbalance in main board which is composed of microprocessor.

According to the present invention, when the capacity of the circuit breaker varies, such as 15A, 20A, 30A, 50A, 100A, the capacity of the circuit breaker can be wired according to the load of the load.

In one embodiment,

At least one single phase transformer, single phase transformer side current transformer, load side current transformer, input part, front matrix part, rear stage matrix part, wiring breaker, main control part, and at least one single phase transformer An input unit which receives an input through a current transformer and branches and outputs it to a shear matrix unit; The output line output from the front end matrix part is input to the circuit breaker wired to the load via the load side current transformer; The front matrix part is composed of an input line branched through the input part and an output line wired to the wiring breaker constitute an XY matrix circuit in the matrix part, and the matrix cells are wired by magnetic switches, so that the input lines and output lines can be selected by magnetic switches. Matrix portion; The rear-end matrix part comprises an XY matrix circuit in the matrix portion of the output line and the load of the circuit breaker, and the matrix cells are wired by the magnetic switch, so that the rear-end matrix part can select and wire the output line and the load of the circuit breaker by the magnetic switch; The main control part receives the current amount of the current transformer of the load side transformer and the current amount of the transformer side transformer for each single phase transformer, and turns on the magnetic switch to connect the circuit breaker wired to the load with the phase input unit so that the load side circuit breaker can select the single phase transformer. And a main control part for selecting a circuit breaker for each load; The main control unit is a switchboard phase unbalance elimination parallel operation automatic control controller characterized by a main control unit consisting of a microprocessor constituting a wiring circuit to drive a magnetic switch in the matrix unit to select a single-phase transformer and a circuit breaker to wire the load.

In one embodiment,

At least one single phase transformer, single phase transformer side current transformer, load side current transformer, input part, front matrix part, rear stage matrix part, wiring breaker, main control part, and at least one single phase transformer An input unit which receives an input through a current transformer and branches and outputs it to a shear matrix unit; The output line output from the front end matrix part is input to the circuit breaker wired to the load via the load side current transformer; The front matrix part is composed of an input line branched through the input part and an output line wired to the wiring breaker constitute an XY matrix circuit in the matrix part, and the matrix cells are wired by magnetic switches, so that the input lines and output lines can be selected by magnetic switches. Matrix portion; The rear-end matrix unit comprises an XY matrix circuit in the matrix section of the output line and the load of the circuit breaker, and the matrix cells are wired by a solid state relay so that the output line and the load of the circuit breaker can be selected by a solid state relay. The main control part receives the current amount of the current transformer of the load side transformer and the current amount of the transformer side transformer for each single phase transformer, and turns on the magnetic switch to connect the circuit breaker wired to the load with the phase input unit so that the load side circuit breaker can select the single phase transformer. And a main control part for selecting the circuit breaker through the contactless relay for each load; The main control part drives the magnetic switch in the front matrix part and selects the wiring breaker through the single-phase transformer and the solid state relay in the rear part matrix part to remove the wiring board. Parallel operation automatic control controller.

In one embodiment,

It consists of three phase transformer, single phase transformer for seasonal load, transformer side current transformer, load side current transformer, input part, shear matrix part, rear stage matrix part, wiring breaker, main control part, and wired from low voltage part terminal block of three phase transformer and seasonal load dedicated single phase transformer. An input unit which receives a power line through a transformer-side current transformer and branches it to output a shear matrix unit; The output line output from the front end matrix part is input to the circuit breaker wired to the load via the load side current transformer; The front matrix part is composed of an input line branched through the input part and an output line wired to the wiring breaker, which constitutes an XY matrix circuit in the front matrix part, and the matrix cells are wired by a relay so that the input line and output line can be selectively wired as a relay Shear matrix unit; The rear matrix unit comprises an XY matrix circuit in which the output line and the load of the circuit breaker are formed in the matrix unit, and the matrix cell is wired between the relays so that the output line and the load of the circuit breaker can be selectively wired between the output line and the load of the circuit breaker; The main control part composed of microprocessor receives current amount of current transformer and current value of transformer current transformer and inputs relay to ON contact point and seasonal load dedicated single phase transformer to connect input circuit breaker and input circuit to minimize phase imbalance of three phase transformer. It is a main control part that can share the seasonal demand air-conditioning load and select a circuit breaker through a contactless relay for each load; The main control part receives the current information of the load-side current transformer into three phase groups to minimize the phase imbalance of the three-phase transformer, and operates the relay in the shear matrix section to configure the wiring circuit between the loads for each phase. An automatic control controller for parallel operation of eliminating phase imbalance in a switchgear, which includes a main processor composed of a microprocessor which enables the wiring circuits to be selected and wired to the load through a solid state relay in the rear matrix matrix.

In one embodiment,

A phase input unit composed of a phase current transformer, a phase input unit, a matrix unit, a wiring breaker, and a main control unit, for inputting power from the circuit breaker in the switchboard low voltage unit through the phase current transformer and branching the output to the matrix unit; An output line output from the matrix portion is wired to the load to supply power to the load; The matrix section includes an input line branched through the phase input section and an output line wired to the load constitute an XY matrix circuit in the matrix section, and a matrix section capable of selectively wiring input lines and output lines as relays between matrix cells. ; The main control part composed of microprocessor receives the current information of the phase current transformer, and the main control part can select the ON contact connection wiring to connect the relay in the matrix part to connect the input line branched through the phase input part and the output line wired to the load to minimize phase imbalance. Is; The main control unit is divided into three phase groups in which the phase imbalance is minimized by receiving the current amount information of the phase current transformer, and drives the relay in the matrix unit to select the wiring circuit between the loads for each of the three phases. Unbalance elimination parallel operation automatic control controller.

In one embodiment,

A current breaker, an input part, a matrix part, a wiring breaker, and a main control part, wherein the wiring breaker is one or more different capacity circuit breakers; An input unit which receives power from a circuit breaker in the switchboard low voltage unit through a current transformer and branches the power to the matrix unit; An output line output from the matrix portion is wired to the load to supply power to the load; The matrix part has an input line branched through the input part and an output line wired to the load constitute an XY matrix circuit in the matrix part, and the matrix cells are wired by magnetic switches, so that the input lines and output lines can be selectively wired by the magnetic switch. part; The main control part composed of microprocessor receives input current information of current transformer and selects the circuit breaker according to the capacity of the circuit breaker. It is an automatic control controller.

In one embodiment,

In the above, the magnetic switch is a switchboard phase unbalance elimination parallel operation automatic control controller characterized in any one of a relay or a solid-state relay.

In one embodiment,

In the above, the circuit breaker is a switchboard phase unbalance removal parallel operation automatic control controller characterized by a ground fault circuit breaker.

In one embodiment,

In the above, the loads wired to the circuit breakers are classified into fixed loads and variable loads.

Fixed loads are divided into fixed loads and variable loads by a group of loads that may cause device damage or data loss when the power is switched, such as a load wired to a computer.

The variable load is a variable load in which the power is wired from the transformer low voltage section terminal block to the phase input section, the matrix section, and the circuit breaker; The fixed load is a fixed load that does not change the phase power in order to minimize the phase imbalance. The power supply is routed from the terminal block of the transformer to the circuit breaker immediately through the current transformer without passing through the phase current transformer and the matrix part. Parallel operation automatic control controller.

10: center of gravity of the maximum load vector
11: center of gravity of the load vector
12: T phase load vector compensated by reconstruction of load sharing through load transfer by phase

Claims (21)

delete delete delete Consists of at least one transformer, phase current transformer, load current transformer, phase input unit, matrix unit, wiring breaker, main control unit,
A phase input unit configured to receive a power line wired from at least one transformer terminal terminal to at least one transformer through a phase current transformer, branch, and output the branched line to a matrix unit;
The output line outputted from the matrix portion is input to the wiring breaker wired to the load via the load current transformer;
An input line branched through the phase input unit and an output line wired to the circuit breaker form an XY matrix circuit in the matrix unit, and the matrix cells are wired by a magnetic switch to select and wire the input line and the output line with the magnetic switch. Matrix portion;
The main control part composed of microprocessor receives magnetic current of load current transformer and current transformer current information by transformer, and inputs and outputs 1: 1 by input and output so that phase imbalance is minimized by transformer. A main control unit wiring the ON contact;
The main controller receives the current information of the load transformer and divides it into three phase groups in which phase imbalance is minimized for each transformer, and drives the magnetic switch in the matrix part to form a 1: 1 wiring circuit between inputs and outputs between the three phases. An automatic control controller for parallel operation of eliminating phase imbalance in the switchgear.
Three phase transformer, single phase transformer, phase current transformer, load current transformer, phase input part, matrix part, wiring breaker, main control part,
A phase input unit configured to receive a power line wired from the low voltage unit terminal block of the three-phase transformer and the single-phase transformer through a phase current transformer and branch and output the same to the matrix unit;
The output line outputted from the matrix portion is input to the wiring breaker wired to the load via the load current transformer;
An input line branched through the phase input unit and an output line wired to the circuit breaker form an XY matrix circuit in the matrix unit, and the matrix cells are wired by a magnetic switch to select and wire the input line and the output line with the magnetic switch. Matrix portion;
The main control part composed of microprocessor receives input current information of load transformer and current transformer of phase transformer and minimizes the phase imbalance of three-phase transformer. A main control unit that shares some loads with the single-phase transformer;
The main controller receives the current information of the load transformer and divides it into three phase groups, which minimizes the phase imbalance of the three-phase transformer, and drives the magnetic switch in the matrix to configure the 1: 1 wiring circuit between inputs and outputs between the three phases. An automatic control controller for parallel operation of eliminating phase imbalance in the switchgear, which includes a main controller composed of a microprocessor that shares some loads with a transformer.
delete The method according to any one of claims 4 to 5,
Magnetic switch is automatic control of switchboard phase unbalance elimination, characterized in that it is replaced by any one of wiring switch or circuit breaker or reed switch or selector switch or push button switch or sliding switch or toggle switch or digital switch or relay or solid state relay. Controller.
delete delete delete At least one single-phase transformer, single-phase transformer-side current transformer, load-side current transformer, input section, matrix section, wiring breaker, main control section,
An input unit which receives a power line wired from the low voltage unit terminal block of the at least one single phase transformer through a single phase transformer side current transformer and branches it to output to the matrix unit;
The output line outputted from the matrix portion is input to the circuit breaker wired to the load via the load side current transformer;
The matrix part is connected to the input line branched through the input part and the output line wired to the wiring breaker constitutes an XY matrix circuit in the matrix part, and the matrix cells are wired by the magnetic switch, so that the input line and the output line are selected as the magnetic switch by 1: 1. A matrix unit capable of wiring;
The main control unit composed of the microprocessor is programmed into the transformer utilization maximum and minimum values to the microprocessor;
The main control part receives current amount of current transformer and current value of transformer current transformer for each single-phase transformer and turns on the magnetic switch so that each transformer is connected to the circuit breaker and the phase input unit wired to the load uniformly based on the average value of the total current. Connecting and wiring, and if the utilization of each transformer is more than the maximum configuration of the single-phase transformer further, if less than the minimum to eliminate the single-phase transformer step by step to minimize the no-load loss;
A main control unit is a control unit for a phase-unbalanced parallel operation automatic control controller characterized in that the main control unit consisting of a microprocessor constituting a wiring circuit connecting the input unit and the circuit breaker to equally load the single phase transformer by driving the magnetic switch in the matrix unit.
At least one single-phase transformer, single-phase transformer-side current transformer, load-side current transformer, input section, matrix section, wiring breaker, main control section,
An input unit which receives a power line wired from the low voltage unit terminal block of the at least one single phase transformer through a single phase transformer side current transformer and branches it to output to the matrix unit;
The output line outputted from the matrix portion is input to the circuit breaker wired to the load via the load side current transformer;
An input line branched through the input unit and an output line wired to the wiring breaker constitute an XY matrix circuit in the matrix unit, and the matrix cells are wired by magnetic switches so that the input lines and output lines can be selectively wired by the magnetic switch. Matrix portion;
The main control part receives the current amount of the current transformer of the load side transformer and the current amount of the transformer side transformer for each single phase transformer, and turns on the magnetic switch to connect the circuit breaker wired to the load with the phase input unit so that the load side circuit breaker can select the single phase transformer. To;
A main control unit is a control panel of the phase control unbalanced parallel operation automatic control unit characterized in that the main control unit consisting of a microprocessor constituting a wiring circuit connecting the input unit and the circuit breaker to drive the magnetic switch in the matrix unit to select and wire the load for each single-phase transformer.
Consists of transformer, phase current transformer, load current transformer, phase input part, front matrix part, rear matrix part, wiring breaker, main control part,
A phase input unit for receiving power from the terminal block of the transformer low voltage unit through a phase current transformer and branching the output to the shear matrix unit;
An output line output from the front end matrix unit is input to a wiring breaker wired for each load via a load current transformer;
The input matrix branched through the phase input unit and the output line wired to the circuit breaker constitute an XY matrix circuit in the front matrix unit, and the matrix cells are wired by magnetic switches so that the input lines and output lines are selected by magnetic switches. Shear matrix unit capable of;
The rear-end matrix part comprises an XY matrix circuit in the matrix portion of the output line and the load of the circuit breaker, and the matrix cells are wired by the magnetic switch, so that the rear-end matrix part can select and wire the output line and the load of the circuit breaker by the magnetic switch;
The main control part composed of microprocessor receives the current amount of load current transformer and the current amount information of each phase current transformer to turn on the magnetic switch in the matrix part to connect the circuit breaker wired by load so that the phase imbalance is minimized and the phase input part. A topic keyword to choose from;
The main controller receives the current information of the load transformer and divides it into three phase groups that minimize phase imbalance, and drives the magnetic switch in the matrix to configure 1: 1 wiring circuit between inputs and outputs between the three phases. An automatic control controller for parallel operation of eliminating phase imbalance in the switchgear, which includes a main controller composed of microprocessors for selecting and configuring interconnection circuits.
At least one single-phase transformer, single-phase transformer-side current transformer, load-side current transformer, the input unit, the front matrix portion, the rear stage matrix portion, wiring breaker, main control portion,
An input unit which receives a power line wired from at least one single phase transformer low voltage unit terminal block through a single phase transformer side current transformer and branches the output line to a shear matrix unit;
The output line output from the front end matrix part is input to the circuit breaker wired to the load via the load side current transformer;
The front matrix part is composed of an input line branched through the input part and an output line wired to the wiring breaker constitute an XY matrix circuit in the matrix part, and the matrix cells are wired by magnetic switches, so that the input lines and output lines can be selected by magnetic switches. Matrix portion;
The rear-end matrix part comprises an XY matrix circuit in the matrix portion of the output line and the load of the circuit breaker, and the matrix cells are wired by the magnetic switch, so that the rear-end matrix part can select and wire the output line and the load of the circuit breaker by the magnetic switch;
The main control part receives the current amount of the current transformer of the load side transformer and the current amount of the transformer side transformer for each single phase transformer, and turns on the magnetic switch to connect the circuit breaker wired to the load with the phase input unit so that the load side circuit breaker can select the single phase transformer. And a main control part for selecting a circuit breaker for each load;
A main control unit is a control unit for a phase-unbalanced parallel operation automatic control controller comprising a main control unit consisting of a microprocessor constituting a wiring circuit to drive a magnetic switch in the matrix unit to select a single-phase transformer and a circuit breaker to wire the load.
At least one single-phase transformer, single-phase transformer-side current transformer, load-side current transformer, the input unit, the front matrix portion, the rear stage matrix portion, wiring breaker, main control portion,
An input unit which receives a power line wired from at least one single phase transformer low voltage unit terminal block through a single phase transformer side current transformer and branches the output line to a shear matrix unit;
The output line output from the front end matrix part is input to the circuit breaker wired to the load via the load side current transformer;
The front matrix part is composed of an input line branched through the input part and an output line wired to the wiring breaker constitute an XY matrix circuit in the matrix part, and the matrix cells are wired by magnetic switches, so that the input lines and output lines can be selected by magnetic switches. Matrix portion;
The rear-end matrix unit comprises an XY matrix circuit in the matrix section of the output line and the load of the circuit breaker, and the matrix cells are wired by a solid state relay so that the output line and the load of the circuit breaker can be selected by a solid state relay.
The main control part receives the current amount of the current transformer of the load side transformer and the current amount of the transformer side transformer for each single phase transformer, and turns on the magnetic switch to connect the circuit breaker wired to the load with the phase input unit so that the load side circuit breaker can select the single phase transformer. And a main control part for selecting the circuit breaker through the contactless relay for each load;
The main control part drives the magnetic switch in the front matrix part and selects the wiring breaker through the single-phase transformer and the solid state relay in the rear part matrix part to remove the wiring board. Parallel operation automatic control controller.
It consists of three phase transformer, single phase transformer for seasonal load, transformer side current transformer, load side current transformer, input part, shear matrix part, rear matrix part, wiring breaker, main control part.
An input unit which receives a power line wired from the low voltage unit terminal block of the three-phase transformer and the single-phase transformer for the seasonal load through the transformer-side current transformer and branches it to output to the shear matrix unit;
The output line output from the front end matrix part is input to the circuit breaker wired to the load via the load side current transformer;
The front matrix part is composed of an input line branched through the input part and an output line wired to the wiring breaker, which constitutes an XY matrix circuit in the front matrix part, and the matrix cells are wired by a relay so that the input line and output line can be selectively wired as a relay Shear matrix unit;
The rear matrix unit comprises an XY matrix circuit in which the output line and the load of the circuit breaker are formed in the matrix unit, and the matrix cell is wired between the relays so that the output line and the load of the circuit breaker can be selectively wired between the output line and the load of the circuit breaker;
The main control part composed of microprocessor receives current amount of current transformer and current value of transformer current transformer and inputs relay to ON contact point and seasonal load dedicated single phase transformer to connect input circuit breaker and input circuit to minimize phase imbalance of three phase transformer. It is a main control part that can share the seasonal demand air-conditioning load and select a circuit breaker through a contactless relay for each load;
The main control part receives the current information of the load-side current transformer into three phase groups to minimize the phase imbalance of the three-phase transformer, and operates the relay in the shear matrix section to configure the wiring circuit between the loads for each phase. An automatic control controller for parallel operation of eliminating phase imbalance in a switchgear, which includes a main processor composed of a microprocessor which enables the wiring circuits to be selected and wired to the load through a solid state relay in the rear matrix matrix.
delete It consists of current transformer, input part, matrix part, wiring breaker, main control part,
The circuit breaker is one or more different capacity circuit breakers;
An input unit which receives power from a circuit breaker in the switchboard low voltage unit through a current transformer and branches the power to the matrix unit;
An output line output from the matrix portion is wired to the load to supply power to the load;
The matrix part has an input line branched through the input part and an output line wired to the load constitute an XY matrix circuit in the matrix part, and the matrix cells are wired by magnetic switches, so that the input lines and output lines can be selectively wired by the magnetic switch. part;
The main control part composed of microprocessor receives input current information of current transformer and selects the circuit breaker according to the capacity of the circuit breaker. Auto control controller.
19. The switchgear phase according to any one of claims 11 or 12 or 13 or 14 or 15 or 18, wherein the magnetic switch is replaced by either a relay or a solid state relay. Automatic control controller for unbalanced parallel operation.
19. The circuit breaker according to any one of claims 4 or 5 or 11 or 12 or 13 or 13 or 14 or 15 or 16 or 18 is replaced with an earth leakage breaker. Parallel operation automatic control controller for eliminating phase imbalance of the switchboard.
The load according to any one of claims 4 or 5 or 11 or 12 or 13 or 13 or 14 or 15 or 16 or 16 or 18, wherein the load is wired to the wiring breaker. At fixed and variable loads;
The variable load is a variable load in which the power is wired from the transformer low voltage section terminal block to the phase input section, the matrix section, and the circuit breaker;
The fixed load is a fixed load that does not change the phase power in order to minimize the phase imbalance. Controller.

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