KR102154730B1 - Switchboard energy moniteoring system - Google Patents

Abstract

According to the present invention, a switchboard energy management system, which is a system for managing energy of a switchboard including a low-voltage board, a motor control board, a panel board, and a measurement unit, includes: a current transformer mounted on a circuit breaker of each of the low-voltage board, the motor control board, and the panel board to sense the amount of current flowing in a line; and a measurement device displaying information related with electric power and the amount of current flowing in an individual load by receiving a current value from the current transformer and managing the volume of electric power based on the same. The current transformer includes: an address storage part storing a measured address value of an individual load; and a wireless communication part operated by using induced power generated by the current flowing in the line as a power source. The measurement device receives and displays address information of the current transformer and information related with electric power and the amount of current of the current transformer corresponding to the address from the wireless communication part.

Description

Switchboard energy management system {SWITCHBOARD ENERGY MONITEORING SYSTEM}

The present invention relates to a switchboard energy management system, and more particularly, to a switchboard energy management system capable of selectively displaying the load amount of each individual load using a wireless current transformer.

Recently, energy has become a big issue both domestically and internationally, and demand for energy-saving systems is increasing. Switchgear is the most basic device that supplies energy to customers, but until now, the technical elements of switchgear have been concentrated on a stable supply of electricity. Most switchgears basically measure electrical elements such as voltage, current, and power, and simply use the function of viewing the measured values in real time or remotely. Such switchgear equipment is composed of a switchboard, a switchboard, a distribution board, etc., and power devices are composed of a circuit breaker, a transformer, an MCCB, and a protection device. Power received from the power supply is supplied to the MCCB through a circuit breaker and a transformer, and power is supplied to each load terminal through the MCCB.

Accordingly, as a way to reduce power consumption and cut off when an overload occurs, cases of introducing a power measurement system that measure the power of a load are gradually increasing.

In Korean Patent Laid-Open No. 10-2012-0023475, after continuously monitoring the amount of power used through a smart meter, etc., if the amount of power used exceeds the amount of contracted power, a penalty is given in which the electricity bill increases exponentially in proportion to the number of excesses. How to do it.

Korean Patent Registration No. 10-2023954 discloses a configuration for monitoring and controlling the load of the switchboard, but there is a disadvantage in that it is not possible to monitor the total load and the load of each individual load.

(01) Republic of Korea Patent Publication No. 10-2012-0023475, a watt-hour meter that supports dynamic time-varying power rates (02) Korean Patent Registration No. 10-2023954, Switchboard monitoring and load control system

An object of the present invention is to provide a switchboard energy management system capable of saving energy through selective load measurement.

The switchboard energy management system according to the present invention is a switchboard energy management system including a low-voltage panel, a motor control panel, a distribution panel, and a measuring device, which is mounted on each of the circuit breakers of the low-voltage panel, the motor control panel, and the distribution panel to detect the amount of current flowing through the line. deflector; And a measuring device for receiving a current value from the current transformer, displaying current amount and power-related information flowing through an individual load, and managing the amount of power based thereon, wherein the current transformer is an address storage unit that stores an address value of the measured individual load, And a wireless communication unit operating by using the induced power generated by the current flowing through the line as a power source, wherein the measurement device receives address information of the current transformer and current amount and power related information of the current transformer corresponding to the address from the wireless communication unit. It characterized in that the display.

According to the embodiment of the present invention, the current transformer includes a dip switch, and the dip switch is turned on while logging into the measuring device so that the measuring device checks the address of the current transformer.

According to the embodiment of the present invention, the measurement device may check the address of the load set by the user, and selectively display the amount of power of the load portion selected by the user.

According to an embodiment of the present invention, the current transformer comprises: a plurality of first current transformers measuring the amount of current for each load of the low platen; A plurality of second current transformers measuring the amount of current for each load of the motor control panel; And a plurality of third current transformers for measuring the amount of current for each load of the distribution panel, wherein the measuring device includes: a first measuring device for receiving data from the first current transformer; A second measuring instrument for receiving data from the second current transformer; And a third measuring device for receiving data from the third current transformer.

According to the present invention, it is possible to selectively measure and manage a load amount for each type of load.

Further, according to the present invention, by performing wireless communication using induced power without a separate power source, communication between the current transformer and the measuring device can be performed simply.

1 schematically shows a switchboard energy management system according to the present invention.
2 is a block diagram showing the configuration of the current transformer of FIG. 1 for each function.
3 shows an example of use of a measuring device according to an embodiment of the present invention.

In the present invention, various modifications may be made and various embodiments may be provided, and specific embodiments will be illustrated in the drawings and described in detail in the detailed description. However, this is not intended to limit the present invention to a specific embodiment, it is to be understood to include all changes, equivalents, and substitutes included in the spirit and scope of the present invention. In describing the present invention, when it is determined that a detailed description of a related known technology may obscure the subject matter of the present invention, a detailed description thereof will be omitted.

Terms such as first, second, A, and B may be used to describe various elements, but the elements should not be limited by the terms. These terms are used only for the purpose of distinguishing one component from another component. For example, without departing from the scope of the present invention, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element. The term and/or includes a combination of a plurality of related listed items or any of a plurality of related listed items.

The terms used in the present application are only used to describe specific embodiments, and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In the present application, terms such as "comprise" or "have" are intended to designate the presence of features, numbers, steps, actions, components, parts, or combinations thereof described in the specification, but one or more other features. It is to be understood that the presence or addition of elements or numbers, steps, actions, components, parts, or combinations thereof does not preclude in advance.

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

1 schematically shows a switchboard energy management system according to an embodiment of the present invention, and FIG. 2 shows the configuration of the current transformer of FIG. 1 for each function.

The switchboard energy management system according to an embodiment of the present invention includes a switchboard 100, a motor control panel 200, a distribution panel 300, and a measurement device 500 that receives and analyzes and manages the loads thereof. .

The switchboard 100, the motor control panel 200, and the distribution panel 300 are coupled to a power line connected to a plurality of loads and a current transformer 400 connected to the power lines to measure the amount of current.

The switchboard 100 may include a high-voltage plate and a low platen, and an example of a low platen is shown in the embodiment of the present invention.

The current transformer 400 may be coupled to the primary side or the secondary side of the circuit breaker, senses the amount of current flowing in the line (power line) and transmits it to the measuring device 500.

The current transformer 400 and the measuring device 500 may transmit and receive data through wireless communication. The current transformer 400 transmits the measured amount of current to the measuring device 500, and the measuring device 500 receives the amount of current, analyzes the load amount, and manages the load. The measuring device 500 may be a smart meter. In general, a smart meter displays information necessary for load management such as current and power factor to manage the load, and includes an input device to allow the user to manage them. The measuring device according to the present invention differs from the conventional smart meter in that it includes a wireless communication unit. Recently, many technologies for a monitoring system for power management have been disclosed, and most of them are technologies in which smart meters are connected to and managed with an external server through Ethernet or the Internet. Communication between the current transformer 400 and the measurement device 500 is performed by wire.

The current transformer 400 is a first current transformer 410 attached to the switchboard to measure the load of the switchboard, a second current transformer 420 attached to the motor control panel to measure the load of the motor control panel, and the load of the distribution board attached to the switchboard. It includes a third current transformer 430 for measuring. The first current transformer 410 may include a plurality of current transformers 410a, 410b, 410c that measure various loads such as electric heat, lamps, power, and pumps. Likewise, the second and third current transformers are also a plurality of current transformers. It may include. Since the configurations of the first to third current transformers 410, 420, and 430 are substantially the same, the same reference numeral 400 will be used, and detailed configurations of the current transformers will be described.

The current transformer 400 may include a power supply unit 441, a sensing unit 442, an address storage unit 443 and a communication unit 444.

The power supply unit 441 uses an electromotive force generated by induced power by a current flowing through a line. Therefore, it can be used semi-permanently without cumbersome procedures such as separately charging or replacing the battery.

The sensing unit 442 senses the amount of current flowing through the line.

The address storage unit 443 stores an address corresponding to a unique number assigned to the current transformer. The address storage unit 443 includes a dip switch, and when the dip switch is turned on, the current transformer is activated and address information is transmitted through the communication unit. Among the plurality of current transformers, an activated current transformer may be controlled by the measuring device 500. If the administrator wants to know the load of the light system, set it through the user interface of the measuring device, and the current transformer that measures the load of the lamp is turned on and the current amount is transmitted to the measuring device along with address information, and the measuring device receives and analyzes it. Can be displayed on the display.

The communication unit 444 transmits the amount of current sensed by the sensing unit and address information stored in the address storage unit to the measurement device 500 through wireless communication with the measurement device. The communication unit 444 operates by an induction power provided from the power supply unit 441, and a Modbus RTU method may be used as a protocol, and RS-485, half duplex, and 2-wire methods may be used as a communication method. . The communication unit 444 transmits data converted into digital values. Since the amount of current measured by the sensor unit 442 is an analog value, it is converted to digital and transmitted. Therefore, it can include an AD converter.

The measuring device 500 is a first measuring instrument 510 for measuring and managing the switchboard 100, a second measuring instrument 520 for measuring and managing the motor control panel, and a third measuring instrument for measuring and managing the distribution panel 300. Including 530.

The measuring device 500 operates in correspondence with each current transformer. That is, the first measuring instrument 510 receives data from the first current transformer 410, the second measuring instrument 520 receives data from the second current transformer 420, and the third measuring instrument 530 is a third current transformer. Data is received from 430. Since the first to third measuring instruments 510, 520, and 530 operate in substantially the same manner, hereinafter, referred to as the measuring device 500, the operation method will be described in detail.

The measuring device 500 receives digitized sensor values and address information from a current transformer. Accordingly, the measurement device 500 may know which load the received sensor value corresponds to. That is, it is possible to know whether the received value is a total heat load, a light load, a power load, or a pump load. Conventionally, when a load amount is received from a switchboard, only the load amount for the entire switchboard can be known and the load amount for an individual load cannot be known. However, in the present invention, an individual load amount can be measured by assigning an address to the current transformer.

Therefore, the measurement device 500 can use energy efficiently and save energy by analyzing each individual load amount and managing the load accordingly.

3 shows an example of use of a measurement device according to an embodiment of the present invention, FIG. 3A shows a first measurement device 510, FIG. 3B shows a second measurement device 520, and is used in general equipment. The amount of current, the amount of current used in the power device, and Figure 3c used in the emergency device shows a third measuring instrument 530.

Referring to FIG. 3, the first measuring instrument 510 that measures and manages the load of the switchboard may display measured values such as the general current amount, power current amount, and emergency current amount of the voltage board, and information such as maximum power consumption and power consumption. .

The second measuring instrument 520, which measures and manages the load of the motor control panel, may display information such as a measured current amount of a pump, a fan, and a power supply, and information such as maximum power consumption and power consumption.

The third measuring instrument 530 that measures and manages the load of the distribution board may display a measured value of the amount of current used for lighting, heat transfer, and power, and information such as maximum power consumption and power consumption.

Managers can save energy by managing power by type of load based on these measured values.

The embodiments have been described above, but these are only examples and do not limit the present invention, and those of ordinary skill in the art to which the present invention belongs are not illustrated above within the scope not departing from the essential characteristics of the present embodiment. It will be seen that various modifications and applications are possible. For example, each component specifically shown in the embodiment can be modified and implemented. And differences related to these modifications and applications should be construed as being included in the scope of the present invention defined in the appended claims.

100: switchboard
200: motor control panel
300: distribution board
400: current transformer
500: measuring device

Claims (4)

As a switchboard energy management system including a low platen, a motor control panel, a distribution panel, and a measuring instrument,
A current transformer mounted on each of the circuit breakers of the low voltage panel, the motor control panel, and the distribution panel to sense an amount of current flowing through the line; And
And a measuring device for receiving a current value from the current transformer, displaying current amount and power-related information flowing through the line, and managing the amount of power based on the information,
The current transformer is
A sensing unit that detects the amount of current flowing through the line,
An address storage unit for storing the address value of the current transformer, and
Including a wireless communication unit operating as a power source induced power generated by the current flowing through the line,
The address storage unit includes a dip switch,
The wireless communication unit is activated when the dip switch is turned on and transmits the current amount sensed by the sensing unit and the address value stored in the address storage unit to the measurement device, converting the amount of current into a digital signal and transmitting it,
A plurality of first current transformers measuring the amount of current for each load of the low platen;
A plurality of second current transformers measuring the amount of current for each load of the motor control panel; And
It includes a plurality of third current transformers measuring the amount of current for each load of the distribution board,
The plurality of first to third current transformers include a total heat transformer for measuring the load of the electric heat, a light transformer for measuring the load of the electric lamp, a power transformer for measuring the load of the power, and a pump current transformer for measuring the load of the pump. ,
The measuring device receives and displays address information of the current transformer from the wireless communication unit and information related to the amount of current and power digitally converted from the current transformer,
A first measuring instrument for receiving data from the first current transformer;
A second measuring instrument for receiving data from the second current transformer; And
A third measuring instrument for receiving data from the third current transformer,
The first measuring instrument displays the general current amount, the power current amount, and the emergency current amount of the low platen,
The second measuring instrument displays the pump current amount of the motor control panel, the fan current amount, and the current amount of the power supply device,
The third measuring instrument displays the lighting current amount, the heat transfer current amount, and the power current amount of the distribution board,
Wherein the measuring device checks the address of the load set by the user, and selectively displays the current amount of the load portion selected by the user among current amounts of the first to third measuring devices.
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