KR20220076793A - Method, apparatus and computer program for maintaining power quality of onsite system in factory - Google Patents

Abstract

The method of maintaining the power quality of the on-site system of the factory performed by the power quality maintenance server includes the steps of measuring the voltage and current of each on-site system connected to each of a plurality of distribution boards provided in the factory, the measured voltage of each on-site system and calculating the compensation power required for each on-site system based on the current and controlling the power compensation device so that the calculated compensation power is supplied or absorbed by the power compensation device, which is one of the loads of each on-site system, The voltage and current of each system are measured in real time by the edge control module provided in the , and the power compensation device is further controlled based on the voltage and current measured in real time.

Description

METHOD, APPARATUS AND COMPUTER PROGRAM FOR MAINTAINING POWER QUALITY OF ONSITE SYSTEM IN FACTORY, SERVER AND COMPUTER PROGRAM

The present invention relates to a method, a server and a computer program for maintaining the power quality of an on-site system of a factory.

In the power industry, power companies supply electricity to electricity meters through generation (alternating current), transmission, and distribution. At this time, while the electric energy flows to the final wiring system through the electric wire until the final load is reached, the quality of electric power is lowered by various factors such as weather, generation, demand, and the like.

If the power quality is low, the electronic device may malfunction or not work. In particular, when the quality of power supplied to an industrial complex such as a factory is low, loads in the industrial complex may not operate normally, and thus the operation rate of the industrial complex may be lowered.

In addition, when load imbalance occurs, the current value used for each distribution panel varies due to the current imbalance, so that the phase difference between the currents of each phase cannot be maintained at 120°. In addition, due to the unbalanced current, a current exceeding an allowable range flows through the neutral conductor, and there is a risk of fire due to overheating.

In the conventional case, in order to maintain the power quality, a separate power regulator is installed in the building to monitor the power quality. Such a power regulator is generally installed at an inlet point where a high voltage is introduced into a building.

However, if only the power quality of the inlet point is maintained, there is a problem that the power quality of each system in the plant connected to each distribution board may be lowered.

In addition, in the case of the prior art, the power regulator had to be installed separately, and it had to be maintained and repaired.

Meanwhile, in the prior art, a method of compensating a neutral current or applying a zero-segment harmonic filter has been used to prevent load imbalance. However, these methods have a problem in that control performance is relatively poor because control is complicated and expensive switching parts are required, which requires excessive cost, but cannot directly solve the cause of overcurrent generated from load imbalance and phase difference.

Japanese Laid-Open Patent Publication No. 2002-244692 (published on Aug. 30, 2002)

The present invention is to solve the problems of the prior art described above, and measures the voltage and current of each system in the plant connected to each of a plurality of distribution boards provided in the factory, and based on the voltage and current of each system in the plant Calculates the compensation power required for the system, controls the power compensation device so that the power compensation device, which is one of the loads of each on-site system, supplies or absorbs the calculated compensation power, and controls each on-site system by the edge control module provided in the factory. An object of the present invention is to provide a method for maintaining power quality in which voltage and current are measured in real time, and a power compensation device is further controlled based on the voltage and current measured in real time.

It is intended to provide a method to optimally maintain the quality of power in the plant's system by performing central control and edge control in parallel.

It is intended to provide a method to secure the stability of the plant's system by preventing overcurrent from flowing in the neutral wire through phase control of the current of each phase.

However, the technical problems to be achieved by the present embodiment are not limited to the technical problems described above, and other technical problems may exist.

As a means for achieving the above-described technical problem, an embodiment of the present invention provides a method for maintaining the power quality of an on-site system of a factory performed by a power quality maintenance server, each of a plurality of distribution boards provided in the factory Measuring the voltage and current of each on-site system connected to, calculating the compensation power required for each on-site system based on the measured voltage and current of each on-site system, and applying the calculated compensation power to each on-site system and controlling the power compensation device to be supplied or absorbed by the power compensation device, which is one of the loads of The power compensation device may be further controlled based on the voltage and current measured in real time.

In an embodiment, the method may further include receiving an additional control history for each system within the system from the edge control module and re-calculating the compensation power based on the additional control history.

In one embodiment, the method may further include measuring the voltage and current of the high voltage entry point of the factory.

In an embodiment, the step of calculating additional compensation power required for the high-voltage entry point based on the measured voltage and current of the high-voltage entry point, and adding the calculated additional compensation power to any one of the power compensation devices The method may further include controlling the one power compensating device to supply or absorb compensating power.

In one embodiment, on the basis of the measured voltage and current of each in-house system, deriving a three-phase unbalanced state on-site system and controlling the power compensation device so that the three-phase unbalanced state on-site system is in a balanced state It may include further steps.

In one embodiment, the step of controlling the power compensating device so that the system in the three-phase unbalanced state is in a balanced state may include the step of performing phase control by the power compensating device to supply reactive power.

In one embodiment, the compensation power may be reactive power.

In an embodiment, the power compensation device may be at least one of an inverter of a renewable generator, a power conversion system (PCS) of an energy storage device, an inverter of an electric motor, and a reactive power compensation device.

In an embodiment, the edge control module may additionally control the power compensation device without a command from the power quality maintenance server.

In an embodiment, in the calculating of the compensation power, an excessive control phenomenon occurs according to the control of the power compensation device by the power quality maintenance server and the additional control of the power compensation device by the edge control module based on the RNN model. The compensation power may be calculated so as not to do so.

In an embodiment, the method may further include controlling the edge control module so that additional control of the power compensating device by the edge control module is not performed when the power quality of each system within the system is out of a preset range. .

Another embodiment of the present invention, in the power quality maintenance server for maintaining the power quality of the on-site system of the factory, a measuring unit for measuring the voltage and current of each in-house system connected to each of a plurality of distribution boards provided in the factory, the measurement A compensation power calculation unit that calculates the compensation power required for each on-site system based on the voltage and current of each on-site system, and a power compensation device that is one of the loads of each on-site system supplies or absorbs the calculated compensation power and a control unit for controlling the power compensation device, wherein the voltage and current of each sow system are measured in real time by an edge control module provided in the factory, and the power is compensated based on the voltage and current measured in real time The device may be further controlled.

Another embodiment of the present invention is a computer program stored in a computer-readable recording medium including a sequence of instructions for maintaining the power quality of an on-site system of a factory, wherein the computer program is executed by a computing device, the factory Measuring the voltage and current of each on-site system connected to each of the plurality of distribution boards provided in the and a sequence of commands for controlling the power compensation device so that the power compensation device, which is one of the loads of each on-site system, supplies or absorbs, the voltage of each on-site system and the voltage and Current may be measured in real time, and the power compensation device may be further controlled based on the voltage and current measured in real time.

The above-described problem solving means are merely exemplary, and should not be construed as limiting the present invention. In addition to the exemplary embodiments described above, there may be additional embodiments described in the drawings and detailed description.

According to any one of the above-described problem solving means of the present invention, the voltage and current of each on-site system connected to each of a plurality of distribution boards provided in the factory are measured, and each in-house system is based on the measured voltage and current of each in-house system. Calculates the compensation power required for The voltage and current of the system may be measured in real time, and the power compensation device may be further controlled based on the voltage and current measured in real time.

In addition, it is possible to provide a method for optimally maintaining the quality of power in a plant in a factory by performing control at the center and control at the edge in parallel.

In addition, it is possible to secure the stability of the plant system in the plant by preventing overcurrent from flowing in the neutral wire through the phase control of the current of each phase.

1 is an exemplary view for explaining a method for maintaining the power quality of the system in the plant in accordance with an embodiment of the present invention.
2 is a block diagram of a power quality maintenance server according to an embodiment of the present invention.
3 is an exemplary diagram for explaining a method of calculating compensation power according to an embodiment of the present invention.
4 is a flowchart of a method for maintaining power quality according to an embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those of ordinary skill in the art can easily implement them. However, the present invention may be embodied in several different forms and is not limited to the embodiments described herein. And in order to clearly explain the present invention in the drawings, parts irrelevant to the description are omitted, and similar reference numerals are attached to similar parts throughout the specification.

Throughout the specification, when a part is "connected" with another part, this includes not only the case of being "directly connected" but also the case of being "electrically connected" with another element interposed therebetween. . In addition, when a part "includes" a certain component, it means that other components may be further included, rather than excluding other components, unless otherwise stated, and one or more other features However, it is to be understood that the existence or addition of numbers, steps, operations, components, parts, or combinations thereof is not precluded in advance.

In this specification, a "part" includes a unit realized by hardware, a unit realized by software, and a unit realized using both. In addition, one unit may be implemented using two or more hardware, and two or more units may be implemented by one hardware. Meanwhile, '~ unit' is not limited to software or hardware, and '~ unit' may be configured to be in an addressable storage medium or may be configured to reproduce one or more processors. Accordingly, as an example, '~' indicates components such as software components, object-oriented software components, class components, and task components, and processes, functions, properties, and procedures. , subroutines, segments of program code, drivers, firmware, microcode, circuitry, data, databases, data structures, tables, arrays and variables. The functions provided in the components and '~ units' may be combined into a smaller number of components and '~ units' or further separated into additional components and '~ units'. In addition, components and '~ units' may be implemented to play one or more CPUs in a device or secure multimedia card.

The "network" referred to below means a connection structure capable of exchanging information between each node, such as terminals and servers, and includes a local area network (LAN), a wide area network (WAN). , the Internet (WWW: World Wide Web), wired and wireless data networks, telephone networks, wired and wireless television networks, and the like. Examples of wireless data communication networks include 3G, 4G, 5G, 3rd Generation Partnership Project (3GPP), Long Term Evolution (LTE), World Interoperability for Microwave Access (WIMAX), Wi-Fi, Bluetooth communication, infrared communication, ultrasound Communication, Visible Light Communication (VLC), LiFi, and the like are included, but are not limited thereto.

Some of the operations or functions described as being performed by the terminal or device in this specification may be instead performed by a server connected to the terminal or device. Similarly, some of the operations or functions described as being performed by the server may also be performed in a terminal or device connected to the server.

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

1 is an exemplary view for explaining a method for maintaining the power quality of the system in the plant in accordance with an embodiment of the present invention.

Referring to FIG. 1 , power may be supplied through a high-voltage inlet point 10 of a factory. The supplied power may be distributed to one or more in-house systems connected to each of the distribution boards through one or more distribution boards 120_1 to 120_4.

Each of the systems connected to the distribution boards 120_1 to 120_4 may be connected to one or more loads. FIG. 1 exemplarily shows power compensating devices 140_1 to 140_4 among loads included in each system in the so-called system.

The edge control module 130 may operate independently of the power quality maintenance server 110 . For example, the edge control module 130 may additionally control the power compensation devices 140_1 to 140_4 without a command from the power quality maintenance server 110 .

The power compensation devices 140_1 to 140_4 may be, for example, at least one of an inverter of a renewable generator, a power conversion system (PCS) of an energy storage device, an inverter of an electric motor, and a reactive power compensation device. In this way, by supplying or storing compensation power by the load in the plant, it is possible to maintain the power quality of the system in the plant through the control of the existing device without the installation of additional equipment such as a filter in the plant.

The power compensating devices 140_1 to 140_4 may supply or absorb compensating power to each system within the system. Here, the compensation power may be reactive power.

The on-site system of the factory may include a power conversion device (not shown). The power conversion device may include a capacitor element for storing reactive power. The power conversion device may supply the stored reactive power to the inlet point 10 or the distribution boards 120_1 to 120_4 of the high voltage of the factory.

According to the present invention, by using the power quality maintenance server 110 to maintain the power quality of the on-site system of the factory, the power quality maintenance server 110 serves as a control tower to maintain the quality of the on-site system of the factory can do.

The power quality maintenance server 110 may control each on-site system connected to the high-pressure inlet point 10 of the plant or the distribution boards 120_1 to 120_4 so that the power quality of the on-site system of the plant is maintained.

For example, the power quality maintenance server 110 may control the power compensating devices 140_1 to 140_4 so that compensation power is supplied or absorbed to the high-voltage inlet point 10 of the factory or to each system within the plant.

Hereinafter, a method for maintaining the quality of the power of the system in the plant of the factory will be described in detail with the center of the power quality maintenance server 110 .

2 is a block diagram of the power quality maintenance server 110 according to an embodiment of the present invention. Referring to FIG. 2 , the power quality maintenance server 110 may include a measurement unit 111 , a compensation power calculation unit 112 , a control unit 113 , a control history receiving unit 114 , and an imbalance detection unit 115 .

The power quality maintenance server 110 may collect information about the load of each in-house system connected to each of a plurality of distribution boards provided in the factory, and store the collected information in a database. The information about the load may include, for example, one or more of a type, an identifier, an installation location of a power compensation device, information on a connected distribution board, a capacity of the device, whether reactive power can be stored, and whether reactive power can be supplied.

The measuring unit 111 may measure the voltage and current of each system in the plant connected to each of the plurality of distribution boards 120_1 to 120_4 provided in the factory. The measurement unit 111 may measure, for example, the voltage and current of each system in the plant connected to each of the plurality of distribution boards 120_1 to 120_4 at preset time intervals.

The compensation power calculator 112 may calculate the compensation power required for each on-site system based on the measured voltage and current of each on-site system.

For example, the compensation power calculator 112 may determine whether the quality of the power of each on-site system is in a normal range or an abnormal range based on the measured voltage and current of each in-house system. When it is determined that the quality of power of an on-site system is in an abnormal range, the compensation power calculating unit 112 may calculate compensation power required for the quality of electric power of a corresponding on-site system to be within the normal range.

The power quality maintenance server 110 comprehensively considers the measured values of the voltage and current of each on-site system connected to each of the plurality of distribution boards 120_1 to 120_4 to determine whether each on-site system is normal or abnormal, and each on-site system By controlling them individually, it is possible to maintain the power quality of the plant's on-site grid in an optimal way.

For example, the power quality maintenance server 110 may determine whether each in-house system is normal or abnormal based on information about each load stored in the database.

The controller 113 may control the power compensation devices 140_1 to 140_4 to supply or absorb the calculated compensation power to the power compensation devices 140_1 to 140_4, which are one of the loads of the respective systems in the system, to supply or absorb the compensation power. In one embodiment, the compensating power may be reactive power.

The edge control module 130 provided in the factory can measure the voltage and current of each system in real time independently of the power quality maintenance server 110 .

For example, the edge control module 130 may additionally control the power compensation devices 140_1 to 140_4 without a command from the power quality maintenance server 110 .

The edge control module 130 provided in the factory may additionally control the power compensation devices 140_1 to 140_4 based on the voltage and current measured in real time.

For example, the edge control module 130 may additionally control each on-site system at a time interval shorter than a preset time interval at which the power quality maintenance server 110 controls the on-site system of the factory.

Referring back to FIG. 2 , the power quality maintenance server 110 may further include a control history receiver 114 . The control history receiving unit 114 may receive an additional control history for each system within the cow from the edge control module 130 .

The compensation power calculator 112 may recalculate the compensation power based on the additional control history.

The power quality maintenance server 110 controls each in-house system in consideration of the control history including information on additional control performed in real time by the edge control module 130, and responds in an optimal way to various situations. It is possible to maintain the quality of the power of the on-site system of the factory.

Since the control of each on-site system of the power quality maintenance server 110 and the additional control of each on-site system of the edge control module 130 are performed independently of each other, the power compensation devices 140_1 to 140_4 connected to each distribution board An excessive control phenomenon in which switching is excessively repeated may occur. Also, due to this, failures and hunting phenomena of the power compensation devices 140_1 to 140_4 may occur.

To solve this problem, the compensation power calculator 112 may calculate the compensation power based on a recurrent neural network (RNN) model so that the above-described excessive control phenomenon does not occur.

3 is an exemplary diagram for explaining a method of calculating compensation power according to an embodiment of the present invention. As shown in FIG. 3 , the compensation power calculator 112 may derive predictive control data 30b by inputting past data 30a of controlling in-house systems of a factory into the RNN model.

The power quality maintenance server 110 controls the edge control module 130 so that the control by the edge control module 130 is performed within the prediction range based on the prediction control data 30b derived using the RNN model. can

For example, when the power quality is out of the predicted range, the power quality maintenance server 110 may control the edge control module 130 so that control by the edge control module 130 is not performed.

The compensation power calculator 112 may calculate the compensation power so that the excessive control phenomenon does not occur using the above-described RNN model.

For example, when the compensation power recalculated based on the additional control history is similar to the compensation power calculated from the RNN model, that is, the compensation power calculator 112 may calculate an error between the recalculated compensation power and the compensation power calculated from the RNN model. When is within a preset range, the system in the in-house may be controlled based on the calculated compensation power.

If the error between the recalculated compensation power and the compensation power calculated from the RNN model exceeds a preset range, the compensation power calculator 112 may not perform additional control by the edge control module 130 .

The measuring unit 111 may further measure the voltage and current of the high voltage inlet point 10 of the factory.

The compensation power calculator 112 may further calculate additional compensation power required for the high-voltage entry point 10 based on the measured voltage and current of the high-voltage entry point 10 .

The controller 113 may control any one of the power compensating devices 140_1 to 140_4 so that any one of the power compensating devices 140_1 to 140_4 supplies or absorbs the calculated additional compensation power.

Referring back to FIG. 2 , the power quality maintenance server 110 may further include an imbalance detection unit 115 .

The unbalance detection unit 115 may derive the three-phase unbalanced in-house system based on the measured voltage and current of each in-house system. Since the current value used by the load in each distribution board is different, a three-phase unbalanced state may occur in the system, and if an unbalanced current greater than the allowable current flows through the neutral conductor, there is a risk of equipment failure and fire.

The controller 113 may control the power compensating devices 140_1 to 140_4 so that the system in the three-phase unbalanced state is in a balanced state. The controller 113 may cause the power compensation devices 140_1 to 140_4 to supply reactive power to perform phase control.

For example, the controller 113 may control the power compensation devices 140_1 to 140_4 so that the magnitude of the phase of the current of each phase is maintained at 120° or less. Through this, by minimizing the neutral current and preventing overcurrent from flowing in the neutral wire, the power quality maintenance server 110 can secure the safety of the system in the plant.

The unbalance detection unit 115 may determine whether a harmonic current component exists in the neutral wire based on the measured voltage and current of each system in the solenoid. The harmonic current component may be removed using a harmonic filter without physically removing it by supplying compensation power.

4 is a flowchart of a method for maintaining power quality according to an embodiment of the present invention. The method 400 for maintaining the quality of power performed in the power quality maintenance server 110 shown in FIG. 4 is time-series processing by the power quality maintenance server 110 according to the embodiment shown in FIG. 2 . include those Therefore, even if omitted below, it is also applied to the method of maintaining the quality of power performed by the power quality maintenance server 110 according to the embodiment shown in FIG. 2 .

In step S410, the power quality maintenance server 110 may measure the voltage and current of each system in the plant connected to each of a plurality of distribution boards provided in the factory.

In step S420 , the power quality maintenance server 110 may calculate the compensation power required for each on-site system based on the measured voltage and current of each on-site system.

In step S430 , the power quality maintenance server 110 may control the power compensating device so that the power compensating device, which is one of the loads of each on-site system, supplies or absorbs the calculated compensation power.

At this time, while steps S410 to S430 are performed in the power quality maintenance server 110, the voltage and current of each system in the plant are measured in real time by the edge control module provided in the factory, and the voltage and current measured in real time Based on the power compensation device may be further controlled.

In the above description, steps S410 to S430 may be further divided into additional steps or combined into fewer steps according to an embodiment of the present invention. In addition, some steps may be omitted as needed, and the order between the steps may be switched.

The method of maintaining the quality of power in the power quality maintenance server described through FIGS. 1 to 4 may be implemented in the form of a recording medium including a computer program stored in a medium executed by a computer or instructions executable by a computer. can

Computer-readable media can be any available media that can be accessed by a computer and includes both volatile and nonvolatile media, removable and non-removable media. Also, computer-readable media may include computer storage media. Computer storage media includes both volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data.

The description of the present invention described above is for illustration, and those of ordinary skill in the art to which the present invention pertains can understand that it can be easily modified into other specific forms without changing the technical spirit or essential features of the present invention. will be. Therefore, it should be understood that the embodiments described above are illustrative in all respects and not restrictive. For example, each component described as a single type may be implemented in a dispersed form, and likewise components described as distributed may also be implemented in a combined form.

The scope of the present invention is indicated by the following claims rather than the above detailed description, and all changes or modifications derived from the meaning and scope of the claims and their equivalents should be interpreted as being included in the scope of the present invention. do.

100: power quality maintenance system
110: power quality maintenance server
111: measurement unit
112: compensation power calculation unit
113: control unit
114: control history receiver
115: unbalance detection unit

Claims (23)

In the method of maintaining the power quality of the on-site system of the factory by the power quality maintenance server,
measuring the voltage and current of each system in the plant connected to each of a plurality of distribution boards provided in the factory;
calculating compensation power required for each on-site system based on the measured voltage and current of each on-site system; and
controlling the power compensating device so that a power compensating device, which is one of the loads of each on-site system, supplies or absorbs the calculated compensation power.
including,
The voltage and current of each system in the cattle are measured in real time by the edge control module provided in the factory, and the power compensation device is additionally controlled based on the voltage and current measured in real time, power quality maintenance method .
The method of claim 1,
receiving additional control histories for each soae system from the edge control module; and
recalculating the compensation power based on the additional control history
Further comprising a, power quality maintenance method.
The method of claim 1,
The method further comprising the step of measuring the voltage and current of the high voltage inlet point of the factory, the power quality maintenance method.
4. The method of claim 3,
calculating additional compensation power required for the high-voltage entry point based on the measured voltage and current of the high-voltage entry point; and
controlling any one of the power compensating devices to supply or absorb the calculated additional compensating power to the one of the power compensating devices
Further comprising a, power quality maintenance method.
The method of claim 1,
deriving an on-site system in a three-phase unbalanced state based on the measured voltage and current of each on-site system; and
controlling the power compensation device so that the system in the three-phase unbalanced state is in a balanced state
Further comprising a, power quality maintenance method.
6. The method of claim 5,
The step of controlling the power compensation device so that the system in the three-phase unbalanced state is in a balanced state,
and performing phase control by causing the power compensation device to supply reactive power.
The method of claim 1,
The compensation power is reactive power, the power quality maintenance method.
The method of claim 1,
The power compensation device is at least one of an inverter of a renewable generator, a power conversion system (PCS) of an energy storage device, an inverter of an electric motor, and a reactive power compensation device, a method of maintaining power quality.
The method of claim 1,
The edge control module will further control the power compensation device without a command from the power quality maintenance server, the power quality maintenance method.
The method of claim 1,
The step of calculating the compensation power is
Based on the RNN model, the compensation power is calculated so that an excessive control phenomenon does not occur according to the control of the power compensation device by the power quality maintenance server and the additional control of the power compensation device by the edge control module. How to keep.
11. The method of claim 10,
controlling the edge control module so that additional control of the power compensation device by the edge control module is not performed when the power quality of each system within the system is out of a preset range
Further comprising a, power quality maintenance method.
In the power quality maintenance server for maintaining the power quality of the system in the plant,
a measuring unit for measuring the voltage and current of each system in the plant connected to each of a plurality of distribution boards provided in the factory;
a compensation power calculator configured to calculate compensation power required for each on-site system based on the measured voltage and current of each on-site system; and
A control unit for controlling the power compensating device so that the calculated compensation power is supplied or absorbed by the power compensating device, which is one of the loads of each on-site system
including,
The voltage and current of each system in the cattle are measured in real time by the edge control module provided in the factory, and the power compensation device is additionally controlled based on the voltage and current measured in real time, the power quality maintenance server .
13. The method of claim 12,
Control history receiving unit for receiving the additional control history for each sonae system from the edge control module
further comprising,
The power quality maintenance server, wherein the compensation power calculation unit recalculates the compensation power based on the additional control history.
13. The method of claim 12,
The measuring unit will further measure the voltage and current of the high voltage inlet point of the factory, the power quality maintenance server.
15. The method of claim 14,
The compensation power calculation unit further calculates additional compensation power required for the high-voltage entry point based on the measured voltage and current of the high-voltage entry point,
The control unit controls any one of the power compensation devices to supply or absorb the additional compensation power to the calculated additional compensation power, the power quality maintenance server.
13. The method of claim 12,
An imbalance detection unit for deriving an in-house system in a three-phase unbalanced state based on the measured voltage and current of each in-house system
further comprising,
The control unit will control the power compensation device so that the system in the three-phase unbalanced state is in a balanced state, the power quality maintenance server.
17. The method of claim 16,
The control unit is to perform the phase control by causing the power compensation device to supply reactive power, the power quality maintenance server.
13. The method of claim 12,
The compensating power is reactive power, power quality maintenance server.
13. The method of claim 12,
The power compensation device is at least one of an inverter of a renewable generator, a power conversion system (PCS) of an energy storage device, an inverter of an electric motor, and a reactive power compensation device, a power quality maintenance server.
13. The method of claim 12,
The edge control module will further control the power compensation device without a command from the power quality maintenance server, the power quality maintenance server.
13. The method of claim 12,
The compensation power calculation unit calculates the compensation power so that an excessive control phenomenon does not occur according to the control of the power compensation device by the power quality maintenance server and the additional control of the power compensation device by the edge control module based on the RNN model that is, the power quality maintenance server.
13. The method of claim 12,
When the power quality of each on-site system is out of a preset range, the edge control module is controlled so that additional control of the power compensation device by the edge control module is not performed.
In a computer program stored in a computer-readable recording medium comprising a sequence of instructions for maintaining the power quality of the on-site system of a factory,
When the computer program is executed by a computing device,
Measuring the voltage and current of each system in the plant connected to each of the plurality of distribution boards provided in the factory,
Compensating power required for each on-site system is calculated based on the measured voltage and current of each on-site system,
and a sequence of instructions for controlling the power compensation device so that the calculated compensation power is supplied or absorbed by the power compensation device, which is one of the loads of each on-site system,
The voltage and current of each system in the cattle are measured in real time by the edge control module provided in the factory, and the power compensation device is further controlled based on the voltage and current measured in real time, computer readable record A computer program stored on a medium.

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