KR20110128778A - Apparatus and method for power control - Google Patents

Abstract

PURPOSE: An apparatus and a method for power control are provided to manage the state of all load terminals by enabling monitoring of a load sate and an individual control. CONSTITUTION: In an apparatus and a method for power control, an integration system server(110a,110b) manages a building energy management system. A machine equipment sensing and control device(120a) collects the information of the machine equipment. Collected information is reported to the integration system server through a main network(150). A power distribution equipment monitoring and control device(120b) collects the information of the power distribution equipment and reports collected information to the integration system server. A distribution panel and an MCC monitoring and control device(120c) collects the information of the power distribution panel and the MCC and reports them to the integration server. A lighting equipment sensing and control device(120d) collect the information of the lighting equipment and reports the collected information to the integration system server.

Description

Power control device and method {Apparatus and method for power control}

The present invention relates to power control, and more particularly, to an apparatus, a method and a system for detecting a state of a load stage and controlling the load stage in response to the sensed state.

Due to the recent economic development and expansion of urban functions, most new buildings are aiming for high-tech, high-rise, and large-scale buildings, and the facilities of buildings consume relatively high energy in consideration of the convenience of maintenance and the increase and stability of office equipment. Building of form to say is done.

On the other hand, a lot of research has been conducted to reduce the energy consumed in the building, for example, air conditioning, power, and lighting systems are separately constructed and the energy management system is operating based on this.

In particular, many studies have been conducted to improve energy management efficiency, such as air conditioner performance diagnosis, control and management technology, and analysis of energy consumption to buildings based on IT technology. .

However, the existing researches on energy management efficiency of the same kind of equipment are technologies that can maximize energy savings by comprehensively analyzing and managing the energy consumption of the air conditioning, power, and lighting control systems that are operating in buildings. Is not yet developed.

In addition, looking at the objects that use most of the electrical energy, it is mainly the outlet load in the office environment, it is not known what to connect to the outlet, the power of the Motor Control Center (MCC) in the power system Most of the parts used by the motor load are adversely affected by the power factor by the inductor (coil), and the increase of reactive power thereby causes a decrease in the actual power used.

In fact, even if the power distribution panel improves the overall power factor to supply power to each distribution panel and MCC, the power factor may vary depending on the load used in each distribution panel or MCC.

In particular, where the motor load is heavily used, power will be supplied to each motor through several MCCs, and deterioration of the power factor by one motor will affect the entire system.

Therefore, it is necessary not only to detect each load condition of air conditioning, power, and lighting system constituting the building at each load stage, and to control each load individually, and to manage the state of all loads comprehensively. It is required.

SUMMARY OF THE INVENTION The problem to be solved by the present invention is to provide an apparatus, a method and a system for enabling the management of the status of all load stages constituting a building by monitoring each load condition and individually controlling a specific load condition. It is.

The object of the present invention is not limited to the above-mentioned object, and other objects that are not mentioned will be clearly understood by those skilled in the art from the following description.

In order to achieve the above object, the power control apparatus according to the present invention generates and transmits a first message including a load state detection module for detecting a state of a load stage and first information about the detected load stage state. And a communication and control module for receiving a second message corresponding to the transmitted first message, wherein the second message includes second information for controlling the load end, and the communication and control module includes The load stage is controlled based on second information.

In addition, in order to achieve the above object, the power control apparatus according to the present invention includes a load state detection module for detecting a state of the load stage and a communication and control module for performing control corresponding to the detected load end state; The communication and control module transmits information on the performed control result, and the load end is a motor connected to a motor control center (MCC) on a power system or an outlet load connected to a distribution panel on a power system. It is characterized by that.

In addition, in order to achieve the above object, the power control method according to the present invention includes the steps of detecting the state of the load stage, generating and transmitting a first message including information on the detected state of the load stage; And receiving a second message including control information for controlling the load stage, and controlling the load stage based on the received second message.

In addition, in order to achieve the above object, the power control method according to the present invention comprises the steps of detecting the state of the load, performing the control corresponding to the detected load state and the information on the performed control results And a load stage is a motor connected to a motor control center (MCC) on a power system or an outlet load connected to a distribution panel on a power system, and the detected load end state is It indicates the state of the current value flowing at the bottom, characterized in that the control is performed when the current value is higher than the predetermined value, or lower than the predetermined value.

According to the embodiment of the present invention, each load state for the air conditioning, power, lighting system, etc. constituting the building can be managed and controlled for each load stage, so that the energy consumed in the building can be saved more efficiently. It works.

The effects of the present invention are not limited to the above-mentioned effects, and other effects not mentioned will be clearly understood by those skilled in the art from the description of the claims.

1 is a block diagram showing a building energy management system according to an embodiment of the present invention.
2 is a block diagram showing the function and configuration of the integrated system server according to an embodiment of the present invention.
3 is a block diagram illustrating a control configuration of an integrated system server and a power control device according to an embodiment of the present invention.
4 is a block diagram illustrating a control configuration of an integrated system server and a power control device according to another embodiment of the present invention.
5 is a block diagram illustrating a configuration of a power control apparatus according to an embodiment of the present invention.
FIG. 6 is a block diagram illustrating a configuration of a motor control center (MCC) according to an embodiment of the present invention.
7 is a block diagram showing the configuration of a distribution panel according to an embodiment of the present invention.

Specific details of other embodiments are included in the detailed description and the drawings. Advantages and features of the present invention and methods for achieving them will be apparent with reference to the embodiments described below in detail with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but can be implemented in various different forms, and only the embodiments make the disclosure of the present invention complete, and the general knowledge in the art to which the present invention belongs. It is provided to fully inform the person having the scope of the invention, which is defined only by the scope of the claims. Like reference numerals refer to like elements throughout.

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

1 is a block diagram showing a building energy management system according to an embodiment of the present invention.

1, the building energy management system according to the present invention is integrated system server (110a, 110b), detection and control device (120a, 120b, 120c, 120d), power control device (130a, 130b), gateway 140a , 140b, 140c, main network 150, and sub-network 160.

Integrated system server (110a, 110b) is a server for operating the building energy management system according to the present invention, usually the data received through the main network 150 is processed and stored in a database after the process by the control algorithm the entire system When a problem occurs in the first integrated system server (110a) and the first integrated system server (110a) for controlling the control system may be provided with a second integrated system server (110b) to manage the entire system by receiving the control authority.

The detection and control devices 120a, 120b, 120c, and 120d collect information about elements constituting each facility group for each facility group constituting a building, or provide a function of performing control on the elements. do.

As an example of such a facility group, FIG. 1 shows a mechanical facility, a power distribution system, a distribution panel, an MCC, a lighting facility, and the like.

The machine facility detection and control device 120a collects information on existing machine facilities and reports the collected information to the integrated system server 110a through the main network 150, or controls the integrated system server 110a. Receive. The machine facility detection and control device 120a may perform direct distributed control through its own algorithm by utilizing information collected from each machine facility and information on surrounding interworking facilities.

The electric power distribution facility detecting and controlling device 120b collects information on the electric power distribution facility and reports the collected information to the integrated system server 110a through the main network 150, or controls the integrated system server 110a. Receive. The electric power distribution facility detection and control device 120b may perform direct distributed control through its own algorithm by using information collected from each power distribution facility and information on surrounding interworking facilities.

The distribution panel and the MCC detection and control device 120c collects information on the distribution panel and the MCC and reports the collected information to the integrated system server 110a through the main network 150, or controls the integrated system server 110a. Receive. The distribution panel and the MCC detection and control device 120c may perform direct distributed control through its own algorithm by utilizing information collected from each distribution panel or MCC and information on surrounding interworking facilities.

The lighting equipment detection and control apparatus 120d collects information on the existing lighting equipment and reports the collected information to the integrated system server 110a through the main network 150 or controls the integrated system server 110a. Receive. The lighting fixture detection and control apparatus 120d may have its own algorithm based on information collected from each lighting fixture to directly perform distributed control.

The power control devices 130a and 130b are directly connected to the respective load ends, and provide the sensing and control device with status information (eg, on / off information, current information, voltage information, power information, etc.) of the connected load ends. Do this.

In FIG. 1, the power control devices 130a and 130b belong to the distribution panel and the MCC sensing and control device 120c. However, the present invention is not limited thereto, and at least one power control device is provided for each sensing and control device. It may include.

The gateways 140a, 140b, and 140c perform protocol conversion between the communication protocol of the existing system in which a separate platform is used and the protocol used in the main network 150.

The main network 150 provides a network function for communication between the integrated system server and the sensing and control devices, and the sub network 160 provides a network function for communication between the sensing and control device and the power control devices. To provide.

An example of the main network 150 is a network using the BACnet / IP protocol, and an example of a subnetwork is a network using the MODbus protocol.

Meanwhile, although a system mainly composed of a wired network is illustrated in FIG. 1, a wireless device corresponding to a sensing and control device may be applied where it is necessary to form a wireless network according to the surrounding environment, for example, IEEE802.15.4 and The same protocol can be used to form a sensor network between multiple wireless devices.

As an example of applying the IEEE802.15.4 protocol, data is collected from sensors for detecting indoor environments such as temperature, humidity, illumination, carbon dioxide concentration, and the like, and the collected data is integrated through the gateway 140c. It can be delivered to the system server (110a).

2 is a block diagram showing the function and configuration of the integrated system server according to an embodiment of the present invention.

Referring to FIG. 2, the integrated system server according to the present invention includes a DB 210 for energy usage and management, and stores data collected from each facility by using separate DB algorithms. In addition, DB analysis algorithm 215 for energy management and control is provided to store a variety of data, and through this analysis algorithm to efficiently report or display the data stored in the DB.

In addition, the integrated system server includes a power facility control and system interworking algorithm 220 for energy management, and integrates information collected from the indoor environment sensing device, power (power distribution panel, MCC, distribution panel), and lighting equipment through such an algorithm. It works. In addition, other equipment control algorithms 225, such as machines for energy management, and the like, using the algorithm to integrate the information collected from the indoor environment sensing device and other equipment, such as a machine in an optimal state.

In addition, the integrated system server is provided with an energy situation and DB display system 230 to review and analyze the contents of the DB, the execution result of the DB analysis algorithm, and the collected situation information, and derive the final result, and the self-diagnosis system 235 By having the integrated system server itself diagnoses its status and informs the user when an error occurs.

In addition, the integrated system server includes the system input / output device 240 and the system core 250 to form a basic configuration of the integrated system server.

3 is a block diagram illustrating a control configuration of an integrated system server and a power control device according to an embodiment of the present invention. The main network 150 uses the BACnet / IP protocol, and the subnetwork 160 uses Modbus. I am using a protocol. The communication protocol applied to the main network 150 and the sub network 160 is not limited thereto.

Referring to FIG. 3, when the power control device 330 corresponds to a distribution panel or an MCC, the power control device 330 may measure a voltage, a current, and the like, and may perform a function of turning on / off power through a relay. .

At this time, the sensing and control device 320 analyzes and generates information necessary for various power monitoring based on the data received through the Modbus protocol, and performs communication through the BACnet / IP protocol to communicate with the integrated system server 310. Will be connected.

4 is a block diagram illustrating a control configuration of an integrated system server and a power control device according to another embodiment of the present invention, in which the main network 150 uses the BACnet / IP protocol, and the subnetwork 160 uses the IEEE802. .15.4 The protocol is used. The communication protocol applied to the main network 150 and the sub network 160 is not limited thereto.

Referring to FIG. 4, when the power control device 440 corresponds to a distribution panel or an MCC, the power control device 440 may measure a voltage, a current, and the like to perform a function of turning on / off power through a relay. .

At this time, the sensing and control device 430 may be configured as a wireless module that supports the IEEE802.15.4 protocol, the sensing and control device 430 is information necessary for various power monitoring based on the data received through the Modbus protocol It is analyzed and generated, and it is connected to the gateway through IEEE802.15.4 communication.

The gateway 420 receives the information collected through the sensing and control device 430 through the IEEE802.15.4 protocol and communicates with the integrated system server 410 through the BACnet / IP protocol.

5 is a block diagram showing a configuration of a power control apparatus according to an embodiment of the present invention, the power control apparatus 500 according to the present invention includes a communication and control module 510 and a load state detection module 520 do.

The load state detection module 520 detects the state of the load stage. At this time, the state of the load stage can be determined by detecting whether the load is connected, whether an overload is applied (for example, whether a current flowing above a predetermined value flows), whether the load is detected but whether the load is actually operating. have.

For example, in case of overload, it is necessary to cut off the electric energy supplied to the load immediately, and thus it is necessary to detect whether or not it is overloaded. In addition, even when the TV plug is connected to the outlet, even when the user does not actually turn on the TV, electric energy may be wasted due to the flow of minute current. Therefore, in order to prevent such waste of electric energy, it is necessary to block the flow of the current flowing into the TV plug, so it is necessary to detect whether the current of the predetermined value or less flows. In this case, the preset value may vary depending on the type of load to be connected and may be preset or changed by the system administrator.

The communication and control module 510 generates a message including information on the detected load state and transmits the message to the detection and control device, and the monitoring and control device transmits the information included in the received message to the integrated system server. .

In this case, the message generated by the communication and control module 510 may include information on the load state and device identification information for identifying the power control device 500, and the message generated by the power control device 500. At least one identification information for identifying a destination may be further included according to a method of transmitting the UE (eg, a multicast transmission method, a unicast transmission method, and a broadcast transmission method).

The integrated system server generates a message including information for load-end control based on the information received from the detection and control device, and transmits the message to the power control device 500 via the detection and control device. At this time, the power control device 500 controls the load stage based on the information received via the sensing and control device.

FIG. 6 is a block diagram illustrating a configuration of a motor control center (MCC) according to an embodiment of the present invention.

Referring to FIG. 6, the energy control relay 610 is an embodiment of the power control apparatus 500, the ammeter 620 corresponds to the load state sensing module 520, and the ON / OFF 630 communicates. It can be understood to correspond to the control module 510.

In this case, the ON / OFF 630 operates a circuit breaker to control the on / off of the motor and performs a communication function with the sensing and control device 640.

In addition, the energy control relay 610 may perform an intelligent relay function that performs a communication function and actively operates according to the current sensing result of the ammeter 620. Accordingly, the energy control relay 610 transmits the detection result of the ammeter 610 to the detection and control device 640, and controls the load end by the control by the detection and control device 640 or the integrated system server 650. In addition to controlling, the load stage may be controlled by the operation of the energy control relay 610 itself, and then only the control result may be transmitted to the sensing and control device 640 and the integrated system server 650.

As shown in FIG. 6, each energy control relay 610 communicates with the sensing and control device 640 via a sub-network, i.e., a network of Modbus protocol, and the sensing and control device 640 is a BACnet / Communication with the integrated system server 650 is performed using the IP protocol.

As described above, the sensing and control device 640 has the capability of collecting load information through the Modbus protocol and performing distributed control in conjunction with other systems (machines and other systems), as well as an integrated system server ( 650 has the capability to perform control via communications.

7 is a block diagram showing the configuration of a distribution panel according to an embodiment of the present invention.

Referring to FIG. 7, the energy control relay 710 is an embodiment of the power control apparatus 500, the ammeter 720 corresponds to the load state sensing module 520, and the ON / OFF 730 is a communication and Corresponds to the control module 510.

The basic configuration of the distribution panel is almost the same as that of the MCC panel shown in FIG. 6, and differs in that it is a single phase.

As shown in FIG. 7, each energy control relay 710 communicates with the sensing and control device 740 via a sub-network, i.e., a network of Modbus protocol, and the sensing and control device 740 is a BACnet / Communication with the integrated system server 750 is performed using the IP protocol. Similarly, the sensing and control device 740 has the ability to collect information from the energy control relay 710 via the Modbus protocol and perform distributed control in conjunction with other systems (machines and other systems), the integrated system server ( 750 has control capability through communication with 750.

In addition, based on the current sensed by each ammeter shown in FIGS. 6 and 7 and the voltage measured by the voltmeter shown respectively, the sensing and control device may perform power monitoring for the MCC panel or distribution panel, Through this power monitoring, the power quality can be measured. In addition, the measurement result of the power quality is transmitted to the integrated system server, and the integrated system server may improve the power factor by sending the processed control signal to the power factor control device (not shown) of the switchgear.

On the other hand, the component or module used in the present embodiment may be software such as a task, a class, a subroutine, a process, an object, an execution thread, a program, or a field-programmable that is performed in a predetermined area on a memory. It may be implemented in hardware such as a gate array or an application-specific integrated circuit (ASIC), or may be a combination of software and hardware. The component or 'module' may be included in a computer-readable storage medium, or a part thereof may be distributed and distributed in a plurality of computers.

Although embodiments of the present invention have been described above with reference to the accompanying drawings, those skilled in the art to which the present invention pertains have various permutations, modifications, and modifications without departing from the spirit or essential features of the present invention. It is to be understood that modifications may be made and other embodiments may be embodied. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive.

Claims (4)

A load state detection module detecting a state of a load stage; And
A communication for generating a first message including first information about the detected load-end state and transmitting it to an integrated system server, and receiving a second message corresponding to the transmitted first message from the integrated system server; Including a control module,
The second message includes second information for controlling the load stage,
The communication and control module controls the load stage based on the second information,
The first message is generated when the value of the sensed load current is higher than a predetermined value or lower than a predetermined value.
The integrated system server includes a DB for energy usage and management of the load end, a DB analysis algorithm for reporting data stored in the DB, contents of the DB, execution results of the DB analysis algorithm, and the load state. And an energy situation and DB display system for reviewing and analyzing the situation information collected from the sensing module to obtain a final result, and a self-diagnosis system for diagnosing a state of the integrated system server and informing a user when an abnormality occurs. The method of claim 1,
And the first message and the second message further comprise identification information identifying the power control device. The method of claim 1,
The power control device is a power control device installed in a motor control center (MCC) or a distribution panel in a power system. The method of claim 1,
And the first message is generated to prevent waste of electrical energy generated in the load stage only when the value of the sensed load current is lower than a preset value.

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