KR20230102731A - Integrated power distribution board for linkage system for smart grid - Google Patents

Abstract

The present invention relates to an integrated switchboard used in a linkage system between power and loads for a smart grid, and more specifically, to prevent safety accidents of internal devices and to provide stable power supply in response to irregular power environment changes in a smart grid. It is about an integrated switchboard based on a linkage system for a smart grid.

Description

Integrated power distribution board for linkage system for smart grid}

The present invention relates to an integrated switchboard used in a linkage system between power and loads for a smart grid, and more specifically, to prevent safety accidents of internal devices and to provide stable power supply in response to irregular power environment changes in a smart grid. It is about an integrated switchboard based on a linkage system for a smart grid.

A switchboard is a device that receives electricity, converts it into electricity suitable for consumers, and distributes it. Demand for electricity is rapidly increasing as technology advances, such as the commercialization of electric vehicles, and environmental pollution caused by fossil fuels has emerged as a social problem. A stable power supply has become important. Therefore, a switchboard with improved performance that stably receives and distributes electricity has been widely developed, as described in the following patent documents.

<Patent Document>

Registered Patent Publication No. 10-2219631 (2021. 02. 18. Registration) "Solar power generation device and ESS-linked functional switchboard"

Recently, one technology field that has been spotlighted in relation to the supply of electricity is a smart grid in which renewable energy sources such as solar and wind power and energy storage devices are converged. In the case of using a conventional switchboard, there is a problem in that the safety of internal devices of the switchboard cannot be ensured and stable power cannot be supplied.

The present invention has been made to solve the above problems,

An object of the present invention is to provide an integrated switchboard based on a linkage system for a smart grid that prevents safety accidents of internal devices and enables stable power supply in response to irregular power environment changes of the smart grid.

The present invention is implemented by an embodiment having the following configuration in order to achieve the above object.

According to one embodiment of the present invention, an integrated switchboard according to the present invention includes a housing forming an outer shape; an electric facility located inside the housing to control the reception and distribution of electric power; A controller controlling the operation of the electrical equipment; the electrical equipment includes a power conversion device that converts and transmits supplied power, and the controller is a fire response unit that detects a fire occurring in the housing. And, it is characterized in that it comprises a stabilization unit for calculating the reactive power and active power to match the rated voltage and frequency and providing them to the power conversion device.

According to another embodiment of the present invention, the integrated switchboard according to the present invention includes a facility sensing unit for measuring the state of each electrical facility, an image sensing unit for outputting a thermal image of each electrical facility, and a battery unit for measuring the state of the battery unit. It further includes a battery sensing unit and a load terminal sensing unit for measuring a power state of a load terminal, wherein the fire response unit analyzes information output from the facility sensing unit to detect an abnormality in each electrical facility; A movement control module for moving a thermal imaging camera to the front of an electrical facility determined to have an abnormality in the determination module, a diagnosis module for diagnosing a fire state using an image captured by the thermal imaging camera, and the battery sensing unit It includes a battery module that analyzes the output information to detect an abnormality in the battery unit so that the electrical equipment can be inspected, and the stabilization unit analyzes the information output from the load stage sensing unit to determine the voltage and frequency at the load stage. A variable control module that calculates control values of reactive power and active power, a threshold value derivation module that derives limit values for reactive power and active power of each individual power converter, and individual power for total maximum reactive power and active power A command value calculation module that calculates command values for reactive power and active power of each individual power converter according to the ratio of reactive power and active power of the converter, and limit values for reactive power and active power of each individual power converter A control regulation module that determines the final command value for reactive power and active power within the range of, and generating a signal for abnormal detection when the command value of reactive power and active power for each power converter exceeds the limit It is characterized in that it includes an abnormal signal generating module.

According to another embodiment of the present invention, in the integrated switchboard according to the present invention, the determination module includes a measurement information collection module for collecting information output from the facility sensing unit, and a reference value for a value output from the facility sensing unit. A reference value setting module for setting a reference value setting module, an environment information collection module for collecting environmental information on the surroundings of the housing, and a reference value correction for modifying the reference value set by the reference value setting module according to the environment information collected by the environment information collection module. module, a reference value comparison module that compares the information output by the facility sensing unit with a reference value, an excess rate calculation module that calculates the degree to which each measured value exceeds the reference value, and an excess rate calculation module that calculates an abnormality index for the degree of abnormality by summing the excess rates It includes an anomaly index calculation module and a shooting confirmation module for moving a thermal imaging camera to an electric facility having an abnormality index equal to or greater than a predetermined value, wherein the movement control module sets an initial position of the thermal imaging camera. An initial location setting module, an anomaly information receiving module for receiving information on the occurrence of an abnormality in an electrical facility detected by the determination module, an anomaly location specification module for specifying the location of an electrical facility where an anomaly occurred, and an initial location and an anomaly location according to A movement degree calculation module that calculates the degree of movement direction and distance of the thermal imaging camera, and a movement degree calculation module according to the information calculated by the movement degree calculation module to move the thermal image camera so that a photograph is taken from the front of the electrical equipment in which the abnormality occurred It is characterized in that it includes a movement operation module and a final position storage module for storing the final position where the photographing was made.

According to another embodiment of the present invention, in the integrated switchboard according to the present invention, the diagnostic module includes a photographing information receiving module for receiving photographic information of electrical equipment photographed by a thermal imaging camera, and A reference image storage module for storing a reference image, a reference image correction module for modifying a reference image according to the ambient temperature, an image comparison module for comparing a captured image and a reference image, and a temperature for each unit area according to image comparison. The elevation measurement module for measuring the elevation of the elevation, the elevation summation module for summing the elevation of temperature for each unit area, the fire index calculation module for calculating the fire index according to the summed elevation, and the fire blocking operation according to the calculated fire index and a fire blocking module that generates a warning about the risk of fire when the fire index exceeds a first warning value, and discharges the air inside the housing to the outside along with a warning. A circulation operation module that cools by cooling, a system blocking module that stops the operation of the integrated switchboard when the fire index exceeds the second warning value, which is higher than the first warning value, and the extinguishing material in the housing together with blocking the system It is characterized in that it comprises a fire extinguishing operation module for spraying.

According to another embodiment of the present invention, in the integrated switchboard according to the present invention, the variable control module includes a voltage control module for calculating a control value for reactive power using a voltage value at the load end, and A frequency control module that calculates a control value for active power using a frequency value, wherein the voltage control module includes a measured voltage input module that inputs information on the measured voltage of the load stage output from the load stage sensing unit and a reactive power control value calculation module that calculates a control value for reactive power according to a rated voltage pre-established in the load stage and the measured voltage, wherein the frequency control unit module calculates the value of the load stage output from the load stage sensing unit. It includes a measurement frequency input module for inputting information on measurement frequency and an active power control value calculation module for calculating a control value for active power according to a rated frequency and measurement frequency preset at a load stage, wherein the limit value derivation module comprises: It includes a reactive power derivation module for deriving a threshold value for reactive power and an active power derivation module for deriving a limit value for active power, wherein the reactive power derivation module inputs the maximum apparent power of the power converter. An input module, an active power measurement value input module for inputting a measured value of active power, and a reactive power limit value calculation module for calculating a reactive power limit value of an individual power converter using the maximum apparent power and the measured active power value , The active power derivation module includes a maximum active power input module for inputting the maximum active power of the power conversion device, an active power measurement value input module for inputting a measured value of active power, and a maximum active power and measured active power values. It is characterized in that it includes an active power limit value calculation module for calculating the active power limit value of the individual power conversion device using the.

According to another embodiment of the present invention, in the integrated switchboard according to the present invention, the command value calculation module includes a reactive power calculation module for calculating a command value for reactive power and active power for calculating a command value for active power. It includes a calculation module, wherein the reactive power calculation module calculates the sum of a limit reactive power input module for inputting limit information on the reactive power derived from the limit value derivation module and a limit reactive power for the entire power conversion device. A limit reactive power calculation module, a reactive power control value input module for inputting the control value information of the reactive power calculated by the variable control module, and a control value of the reactive power as the limit of the individual power conversion device for the total limit reactive power It includes a reactive power command value calculation module that calculates a reactive power command value by distributing it according to the ratio of reactive power, and the active power calculation module inputs limit information on the active power derived from the limit value derivation module. An input module, a total limit active power calculation module that calculates the sum of limit active power for all power converters, and an active power control value input module that inputs control value information of active power calculated by the variable control module , and an active power command value calculation module that calculates an active power command value by distributing the control value of active power according to the ratio of the limit active power of each power converter to the total limit active power.

The present invention can obtain the following effects by combining and using the above embodiments and configurations to be described below.

The present invention has the effect of preventing safety accidents of internal devices and enabling stable power supply in response to irregular power environment changes in a smart grid.

1 is a perspective view of an integrated switchboard according to an embodiment of the present invention;
2 is a configuration diagram of an integrated switchboard according to an embodiment of the present invention.
3 is a cross-sectional view of the image sensing unit of FIG. 2;
4 is a front view of the image sensing unit of FIG. 2;
5 is a block diagram showing a detailed configuration of the controller of FIG. 2;
Figure 6 is a block diagram showing the detailed configuration of the fire response unit of Figure 5;
7 is a block diagram showing the detailed configuration of the determination module of FIG. 6;
8 is a block diagram showing the detailed configuration of the movement control module of FIG. 6;
9 is a block diagram showing the detailed configuration of the diagnostic module of FIG. 6;
10 is a block diagram showing a detailed configuration of the stabilization unit of FIG. 5;
11 is a block diagram showing the detailed configuration of the variable control module of FIG. 10;
12 is a reference diagram showing an example of a configuration of a variable control module of FIG. 10;
Fig. 13 is a block diagram showing the detailed configuration of the threshold value derivation module of Fig. 10;
14 is a reference view showing a control example by the stabilizing unit of FIG. 5;
15 is a block diagram showing the detailed configuration of the command value calculation module of FIG. 10;
Figure 16 is a graph for showing the effect of the stabilization unit of Figure 5;

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of an integrated switchboard based on a linkage system for a smart grid according to the present invention will be described in detail with reference to the accompanying drawings. In the following description of the present invention, if it is determined that a detailed description of a known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted. Throughout the specification, when a part "includes" a certain component, it means that it may further include other components without excluding other components unless otherwise stated, and also described in the specification. Terms such as "...unit" and "...module" refer to a unit that processes at least one function or operation, and may be implemented as hardware or software or a combination of hardware and software.

Referring to FIGS. 1 to 16 for an integrated switchboard based on a linkage system for a smart grid according to an embodiment of the present invention, the integrated switchboard has a housing 1 forming an external shape and a housing 1 inside the housing 1. An electric facility (2) positioned to control power reception and distribution, a sensor unit (3) for sensing information of the electrical facility (2), and a battery section located inside the housing (1) to store power (4), the fire protection unit 5 that prevents fire inside the housing 1, and the information output from the sensor unit 3 is analyzed to determine the electrical equipment 2 and the fire prevention unit 5 It includes a controller 6 and the like to control the operation.

The housing 1 is configured to shape the outer shape of the integrated switchboard, and a door 11 for opening and closing the inner space of the housing 1 and a display located on one side of the housing 1 to display the status of the integrated switchboard ( 12), etc.

The electrical equipment 2 is located inside the housing 1 and is configured to control power reception and distribution, and is electrically connected to a power system, a battery unit, and various loads of consumers. The electrical equipment 2 may include various conventional electric equipment for controlling power reception and distribution, and may include, for example, a transformer, a circuit breaker, a current transformer, a power conversion device, and the like.

The power converter (not shown) is configured to convert the power supplied to the integrated switchboard and transfer it to the load terminal or the battery unit 4, etc., and may be formed of a PCS or the like. For example, a transformer, a circuit breaker, a current transformer, etc. It converts and transmits the characteristics of frequency, voltage, AC/DC, etc. of electricity converted into low voltage and low current by operation. In particular, the power conversion device receives reactive power and active power according to voltage and frequency through control through the controller 6, so that it can maintain a stable state even with rapid changes in current and voltage. In addition, the power conversion device may be formed in plurality by being connected to the load terminal, the battery unit 4, and the like.

The sensor unit 3 is configured to sense information such as the electrical equipment 2, and includes an image sensing unit 31, a facility sensing unit 32, a battery sensing unit 33, and a load stage sensing unit (not shown). ), etc.

The image sensing unit 31 is configured to capture a thermal image of each electrical facility 2 using a thermal imaging camera 311, and is particularly formed to be movable along the inner surface of the door 11. . Accordingly, the image sensing unit 31 may include a movement module 312 for moving the thermal imaging camera 311 and a guide module 313 for forming a path along which the movement module 312 is supported and moved.

The thermal imaging camera 311 is configured to capture a thermal image of the electrical equipment 2, and is formed to be movable to the front of each electrical equipment 2 by the moving module 312. Accordingly, the thermal imaging camera 311 is moved along the path of the guide module 313 according to the operation of the movement module 312 . When the thermal imaging camera 311 detects a first order abnormality according to a controller 6 to be described later in each electrical equipment 2, the electrical equipment 2 in which the first order abnormality occurs according to the operation of the moving module 312 It moves to the front, and a thermal image is taken from the front of the electrical facility 2, and a precise fire diagnosis is made through comparison with the thermal image in a normal state. At this time, since the thermal imaging camera 311 is formed on the door 11 and takes a thermal image from the front of each electrical facility 2, the heat of each electrical facility 2 is not affected by other electrical facilities or other structures. Since only the image can be accurately measured, an accurate thermal image can be taken, and through this, the accuracy of fire diagnosis can also be improved.

The moving module 312 is configured to move the thermal imaging camera 311 and may include a driving means 312a, a driving shaft 312b, and a rotation wheel 312c as shown in FIG. 3 .

The driving unit 312a is configured to provide a driving force for moving the thermal imaging camera 311, and is formed such that the thermal imaging camera 311 is fixed. The driving unit 312a may be formed of a motor or the like.

The driving shaft 312b protrudes from both sides of the driving means 312a and rotates according to the operation of the driving means 312a, and rotation wheels 312c are formed at both ends to rotate together. In particular, the driving shaft 312b can be supported and moved by a guide member 313a of the guide module 313, which will be described later, and more precisely, it is inserted into the insertion hole 313a-1 of the guide member 313a and supported. In this state, movement along the guide member 313a can be made. Therefore, the thermal imaging camera 311 can be moved to the front of each electrical installation 2 in a state where it is stably supported on the inner surface of the door 11 .

The rotation wheel 312c is formed at both ends of the driving shaft 312b and rotates together with the rotation of the driving shaft 312b, and is supported by the moving rail 313b of the guide module 313 to move. Preferably, the rotating wheel 312c may form a gear stage 312c-1 protruding at regular intervals along its circumference, and the gear stage 312c-1 is a protruding stage to be described later of the moving rail 313b. It engages with (313b-1) so that it can rotate.

The guide module 313 guides the moving path of the moving module 312 and is formed to be fixed to the inner surface of the door 11 . In particular, the guide module 313 is formed as a path connecting the front of the point where each of the plurality of electrical facilities 2 are installed so that the thermal imaging camera 311 can move to the front of each of the plurality of electrical facilities 2. do. Therefore, as shown in FIG. 2, the guide module 313 is formed on the path connecting the electric facilities 2 of #1, #2, #3, and #4, so that the moving module 312 moves the guide module 313 ), so that the thermal imaging camera 311 fixed to the moving module 312 can be moved to the front of each electrical installation 2. The guide module 313 may include a guide member 313a supported by the driving shaft 312b and a moving rail 313b to which a rotating wheel 312c moves in engagement.

The guide member 313a has a configuration in which the drive shaft 312b is supported and moved, and the drive shaft 312b is inserted into the insertion hole 313a-1 formed through the guide member 313a so that it can move. do. Therefore, the guide member 313a moves stably without falling as the driving shaft 312b is supported by the guide member 313a and moves even when the moving module 312 is positioned vertically on the inner surface of the door 11. be able to In addition, since the guide member 31a allows the driving shaft 312b to move while being supported, the rotating wheel 312c formed on the driving shaft 312b is also smoothly engaged with the moving rail 313b in a stable state. can make it move.

The moving rail 313b is configured to support and move the rotating wheel 312c, and may be formed parallel to the guide member 313a. On the movable rail 313b, protruding ends 313b-1 may be formed spaced apart at regular intervals so as to be engaged with the gear stage 312c-1 of the rotating wheel 312c. Stable movement according to rotation can be achieved.

The equipment sensing unit 32 is configured to measure the state of each electrical equipment 2 and is formed in each of the electrical equipment 2 accommodated in the housing 1 so that the state can be measured. A conventional sensor for measuring current, voltage, smoke, temperature, etc. may be used as the facility sensing unit 32, and the measured information is transmitted to the controller 6 in real time so that an abnormal state can be detected.

The battery sensing unit 33 is configured to measure the state of the battery unit 4, and a conventional sensor for measuring information on temperature, humidity, gas, current, and voltage of the battery unit may be used, and the measured information is It is transmitted to the controller 6 in real time so that an abnormal state can be detected.

The load sensing unit (not shown) is configured to measure the power state of the load end, and a conventional sensor for measuring voltage, current, frequency, etc. formed at the load end may be used, and the measured information is transmitted to the controller in real time. It is passed to (6).

The battery unit 4 is formed in the housing to store power, and can store power generated from renewable energy sources such as wind power and sunlight, and supply the stored power to a load.

The fire prevention unit 5 is configured to prevent a fire inside the housing 1, and cools the inside of the housing by discharging air in the housing 1 to the outside under the control of the controller 6 to discharge hot air. A cooling circulation unit 51 to make this happen, and a fire extinguishing unit 52 to initially extinguish a fire occurring in the housing 1 by spraying an extinguishing material into the housing 1 under the control of the controller 6, etc. includes

The controller 6 analyzes the information output from the sensor unit 3 and controls the operation of the electrical equipment 2 and the fire prevention unit 5, and includes a transceiver 61 and a fire response unit 62. ), a stabilization unit 63, a storage unit 65, a control unit 66, and the like.

The transmission/reception unit 61 is connected to the electric equipment 2, the sensor unit 3, the fire prevention unit 5, etc. to transmit and receive information.

The fire response unit 62 controls the operation of the fire prevention unit 5 to prevent a fire from occurring in the housing 1, and displays the state of each electrical facility 2 and a thermal image. Through this, it is possible to detect and respond to fire, and includes a determination module 621, a movement control module 622, a diagnosis module 623, a battery module 624, and the like.

The determination module 621 is configured to detect an abnormal state of each electric facility 2, and enables a primary abnormal state to be detected according to information output from the facility sensing unit 32. The determination module 621 determines the measurement information collection module 621a for collecting the information output from the facility sensing unit 32 and reference values for current, voltage, smoke, and temperature information for each electrical facility 2. A reference value setting module 621b to set, an environment information collection module 621c to collect environmental information about the surroundings of the housing 1, and environment information such as temperature and humidity collected by the environment information collection module 621c A reference value correction module 621d for correcting the reference value set by the reference value setting module 621b, a reference value comparison module 621e for comparing the measured value with the reference value, and calculating the degree to which the measured value exceeds the reference value A thermal image camera ( 311) and the shooting confirmation module 621h for precise diagnosis, and a warning to generate a fire warning first before operating the movement control module 622 if the electrical equipment 2 has a serious problem module 621i and the like.

The measurement information collection module 621a collects current, voltage, smoke, and temperature information of each electrical equipment 2, and the reference value setting module 621b sets a limit value in a normal state as a reference value, The environment information collection module 621c collects information on temperature, humidity, etc. through a separate sensor installed around the housing, and the reference value correction module 621d changes the state of the electrical equipment 2 according to the surrounding environment. The reference value comparison module 621e converts the measured values of the current, voltage, smoke, and temperature of each electric facility 2 collected by the measurement information collection module 621a to the reference value. It is compared with the reference value corrected by the correction module 621d, and the excess rate calculation module 621f can calculate the excess rate for the current, voltage, smoke, and temperature of each electric facility 2, at regular time intervals. The excess rate can be calculated, and the abnormal state of each electrical installation 2 can be detected according to the excess rate, and the abnormality index calculation module 621g is calculated by the excess rate calculation module 621f. The ideal index can be calculated by adding the excess rates that are generated, and the ideal index is calculated by adding the excess rates for current, voltage, smoke, and temperature for each electrical installation (2). A comprehensive abnormal state of can be diagnosed, and the photographing confirmation module 621h is a primary abnormal state for the electrical equipment 2 whose abnormality index calculated by the abnormality index calculation module 621g is equal to or greater than a predetermined value. , so that the thermal imaging camera 311 can be moved to the front of the electrical equipment 2 where the abnormality has occurred by the movement control module 622 so that a thermal image can be captured, The warning generating module 621i is a serious error in the electrical installation 2 when the abnormality index calculated by the abnormality index calculation module 621g exceeds a specific value equal to or higher than a predetermined value at which the shooting confirmation module 621h operates. to generate a fire warning signal before the operation of the thermal imaging camera 311 is performed. 52) can be activated.

The movement control module 622 moves the thermal imaging camera 311 to capture a thermal image of the electric facility 2, and includes an initial position setting module 622a and an abnormality information receiving module 622b. ), an abnormal location specification module 622c, a movement degree calculation module 622d, a movement operation module 622e, and a final location storage module 622f.

The initial position setting module 622a is a component for setting the initial position of the thermal imaging camera 311, and sets information on the initial position at which the thermal imaging camera 311 starts to move. The initial location setting module 622a can update the initial location whenever the thermal imaging camera 311 moves, starting with the location information of the initial installation of the integrated switchboard. The last position stopped can be stored by the final position storage module 622f so that it can be set as an initial position in the next operation.

The abnormality information receiving module 622b is configured to receive the primary abnormality information of the electrical equipment 2 detected by the determination module 621), and the thermal imaging camera 311 moves to the electrical equipment 2 where the abnormality occurred. allow this to happen.

The abnormal location identification module 622c is a component that specifies the location of the electrical equipment 2 where the abnormality occurred, and allows the movement of the thermal imaging camera 311 according to the location information set for each electrical equipment 2. .

The movement degree calculation module 622d is a component that calculates the degree of movement direction and distance of the thermal imaging camera 311, from the initial position of the thermal imaging camera 311 to the location of the electrical equipment 2 where the abnormality occurred. The degree of movement along the path of is calculated. Therefore, the movement degree calculation module 622d determines the route according to the initial position set by the initial position setting module 622a and the location of the electrical equipment 2 where the abnormality occurred specified by the abnormal position specifying module 622c. A suitable degree of movement can be calculated.

The movement operation module 622e operates the driving means according to the movement degree calculated by the movement degree calculation module 622d to take a picture, and the thermal imaging camera 311 is configured to operate the electrical equipment in which the abnormality occurred ( 2) After moving to the front, take a thermal image.

The final location storage module 622f is configured to store the location of the thermal imaging camera 311 after shooting by the thermal imaging camera 311 is completed, and stores the current location of the thermal imaging camera 311 for the next operation. It is set as an initial position by the initial position setting module 622a.

The diagnosis module 623 is a component for diagnosing a fire state based on a thermal image captured by the thermal imaging camera 311, so that a diagnosis is made by comparing a thermal image in a normal state with a captured thermal image. photographing information receiving module (623a), reference image storage module (623b), reference image correction module (623c), image comparison module (623d), elevation measurement module (623e), elevation summation module (623f), fire index calculation A module 623g, a fire blocking module 623h, and the like may be included.

The photographing information receiving module 623a is a component that receives thermal image information captured by the thermal imaging camera 311, and is moved to the electric facility 2 where the first abnormality occurs by the movement control module 622. Information photographed by a thermal imaging camera 311 is received.

The reference image storage module 623b is configured to store a thermal image of each electric facility 2 in a normal state, and a fire state can be detected through comparison with a photographed image.

The reference image correction module 623c is a component that corrects the reference image stored by the reference image storage module 623b, and can modify the reference image according to the ambient temperature. The reference image correction module 623c pre-stores a reference image according to the ambient temperature of the housing for each electric facility 2 so that the correction is made, and the comparison with the image taken as the corrected reference image according to the ambient temperature is performed. make it happen Accordingly, the reference image correction module 623c can accurately detect a fire regardless of ambient temperature.

The image comparison module 623d compares the reference image with the captured thermal image, and the reference image corrected by the reference image correction module 623c and the thermal image received by the capture information receiving module 623a. Images can be compared.

The elevation measuring module 623e is configured to measure the degree of thermal elevation by comparing the photographed thermal image with the reference image, and preferably, the elevation may be compared for each unit area.

The elevation summing module 623f calculates the total elevation by summing the temperature elevations of each unit area measured by the elevation measurement module 623e, and calculates the total thermal elevation by summing the elevations of certain unit areas. By doing so, a more accurate elevation calculation can be made.

The fire index calculation module 623g is a component that calculates a fire index representing the degree of fire risk according to the result of adding the degrees of elevation calculated by the degree of elevation summing module 623f. can be calculated. For example, the fire index calculation module 623g may divide the fire index into 1 warning value and a 2nd warning value. If it is less than the warning value, it may be classified as a fire risk state, and if it exceeds the second warning value, it may be classified as a fire occurrence state, and appropriate fire blocking may be performed according to each state.

The fire blocking module 623h is configured to operate for fire blocking according to the fire index, and may include a warning generating module, a circular operation module, a system blocking module, and a fire extinguishing operation module.

The warning generating module is configured to generate a warning about the risk of fire, and can output a warning such as a siren along with lighting through the display 12 . The warning generation module may operate when the fire index exceeds the first warning value, and output different warnings depending on whether the first and second warning values are exceeded.

The circulation operation module is configured to operate the cooling circulation unit 51, and can be operated when the fire index exceeds the first warning value. Therefore, the circulation operation module has a high risk of leading to a fire if the electrical facility 2 is overheated close to a fire, although it is not a fire. Efficient operation is possible to prevent fire while minimizing damage to

The system blocking module is a component that stops the operation of the entire system of the integrated switchboard, and can be operated in a fire occurrence state in which the fire index exceeds the second warning value, thereby reducing damage caused by fire.

The fire extinguishing operation module is configured to operate the fire extinguishing unit 52 together with the operation of the system blocking module, so that the initial fire can be extinguished through the injection of extinguishing materials.

The battery module 624 is a component for diagnosing the state of the battery, and detects whether or not the battery is abnormal so that the integrated switchboard can be inspected. If overheating, gas generation, current, or voltage abnormality occurs in the battery, an abnormality may occur in the electrical equipment 2 and cause a fire. ) to be checked. The battery module 624 compares the information output from the battery sensing unit 33 with a reference value to detect an abnormality, and the abnormality determination module 624a diagnoses that there is an abnormality in the battery unit. In this case, a facility checking module 624b and the like are included to check the electrical facilities 2 .

The stabilization unit 63 is configured to secure power stability even when surges, harmonics, etc. occur, and the values of reactive power and active power provided to the power converter are limited within the maximum range according to voltage and frequency, so that sudden power to prevent changes in In addition, the stabilization unit 63 generates a signal for an abnormality when the command values of reactive power and active power according to voltage and frequency exceed the maximum range, so that inspection and countermeasures for this can be made quickly there is. The stabilization unit 63 includes a variable control module 631, a limit value derivation module 632, a command value calculation module 633, a control adjustment module 634, an abnormal signal generation module 635, and the like.

The variable control module 631 is configured to calculate the supply values of reactive power and active power according to the voltage and frequency at the load end, and the control value of the reactive power according to the voltage and the control value of the active power according to the frequency are calculated. Let it be. The variable control unit 631 may include a voltage control module 631a and a frequency control module 631b.

The voltage control module 631a is a component that calculates the control value of reactive power according to the voltage at the load end, and more precisely, calculates the control value of reactive power so that the measured voltage at the load end can be adjusted to the rated voltage, As shown in FIG. 12 (a), the control value of reactive power can be calculated using the PI controller. The voltage control module 631a may include a measurement voltage input module 6311 and a reactive power control value calculation module 6312.

The measured voltage input module 6311 is a component that collects and outputs information on the measured voltage of the load stage output from the load stage sensing unit.

The reactive power control value calculation module 6312 is a component that calculates a value of reactive power provided to the power conversion device according to a rated voltage (eg, 220V) and the measured voltage established at the load stage, and the measured voltage is Calculate the reactive power value (ΔQ _cont ) that can be adjusted to the rated voltage.

The frequency control module 631b is configured to calculate the control value of active power according to the load end frequency, and more accurately calculates the control value of active power so that the measured frequency of the load end can be adjusted to the rated frequency, The control value of active power can be calculated using the PI controller as shown in FIG. 12(b). The frequency control module 631b may include a measurement frequency input module 6313 and an active power control value calculation module 6314.

The measurement frequency input module 6313 is a component that collects and outputs information on the measurement frequency of the load stage output from the load stage sensing unit.

The active power control value calculation module 6314 is configured to calculate a value of active power provided to the power conversion device according to a rated frequency (eg, 60Hz) preset at the load end and the measured frequency, and the measured frequency is rated Calculate the active power value (ΔP _cont ) that can be tuned to the frequency.

The limit value derivation module 632 is a configuration for deriving limit values of reactive power and active power by the power converter, and includes a reactive power deriving module 632a, an active power deriving module 632b, and the like.

The reactive power deriving module 632a is a component that derives a limit value of usable reactive power for each power converter, and as shown in Step 2 of FIG. 14(a), the maximum value of the apparent power (S _{j, DG} ^max ) and the measured value of active power (P _j,DG ^means ) to calculate the maximum limit of reactive power. The reactive power deriving module 632a includes a maximum apparent power input module 6321, a measured active power value input module 6322, and a reactive power threshold calculation module 6323.

The maximum apparent power input module 6321 is a component that inputs the maximum apparent power (S _{j, DG} ^max ) for the power conversion device, and can input the value of the rated apparent power set according to the capacity of the individual power conversion device. there is.

The active power measurement value input module 6322 is a component that collects and outputs the measured value (P _{j, DG} ^means ) of the active power of the load stage outputted from the load stage sensing unit.

The reactive power limit value calculation module 6323 calculates the limit value ⁽ Q _j,DG ^max ) of the reactive power using the maximum apparent power (S j,DG max ) and the measured value (P _{j, DG} ^means ) of the active power. As a configuration, it is possible to calculate the threshold of reactive power according to the same calculation formula as in Step 2 of FIG. 14 (a).

The active power deriving module 632b is a component that derives a limit value of available active power for each power conversion device, and as shown in Step 2 of FIG. 14(b), the maximum value of active power (P _{j, DG} ^max ) and the measured active power value (P _j,DG ^means ) to calculate the maximum limit of active power. The active power deriving unit 632b includes a maximum active power input module 6324, an active power measurement value input module 6325, and an active power limit value calculation module 6326.

The maximum active power input module 6324 is configured to input the maximum active power (P _{j, DG} ^max ) for the power conversion device, and may input the value of the maximum active power set for each power conversion device.

The active power measurement value input module 6325 is a component that collects and outputs the measured values P _{j and DG} ^means of active power output from the load stage sensing unit.

The active power limit value calculation module 6326 calculates the limit value of active power (ΔP _{j, DG} ^max ) using the maximum active power ⁽ P j, DG max ) and the measured value of active power (P _{j, DG} ^means ). As a configuration, it is possible to calculate the threshold of active power according to the same calculation formula as in Step 2 of FIG. 14 (b).

The command value calculation module 633 calculates command values for reactive power and active power of each individual power converter according to the ratio of reactive power and active power of each individual power converter to the total maximum reactive power and active power. As a configuration, the reactive power and active power limit values for all power converters of the integrated switchboard are added, and the reactive power control value calculation module 6312, active power according to the ratio to the maximum limit value of each individual power converter Control values for reactive power and active power calculated by the control value calculation module 6314 are divided. The command value calculation module 633 includes a reactive power calculation module 633a that calculates a command value for reactive power and an active power calculation module 633b that calculates a command value for active power.

The reactive power calculation module 633a is a component that calculates a command value of reactive power for each individual power converter, and the command value is determined according to the ratio of the reactive power limit value of each individual power converter to the sum of all threshold values of reactive power. make the output happen. Therefore, the reactive power calculation module 633a multiplies the reactive power control value calculated by the reactive power control value calculation module 6312 by the ratio of the reactive power limit value so that the command value of the reactive power is calculated, through which Even distribution of reactive power can be achieved for each individual power conversion device, and the voltage at the load end can be maintained close to the rated voltage. The reactive power calculation module 633a may include a limit reactive power input module 6331, a total limit reactive power calculation module 6332, a reactive power control value input module 6333, and a reactive power command value calculation module 6334. can

The limit reactive power input module 6331 is a configuration for inputting reactive power limit value information for an individual power converter for which a command value is to be calculated, and the limit value (Q) for the reactive power derived from the reactive power deriving module 632a. _j,DG ^max ).

The total limit reactive power calculation module 6332 is a component that calculates the sum of the reactive power limits for all power converters in the integrated switchboard, and the reactive power derived by the reactive power deriving module 632a for each individual power converter. Calculation is made by summing the limits for power (Q _{j, DG} ^max ).

The reactive power control value input module 6333 is a configuration for inputting information on the control value of reactive power set to match the rated voltage of the load stage, and the value calculated by the reactive power control value calculation module 6312 ( ΔQ _cont ).

The reactive power command value calculation module 6334 is a component that calculates the command value of the reactive power for each power converter, and is calculated by the total limit reactive power calculation module 6332 as shown in Step 3 of FIG. 14 (a). Input the reactive power control value ratio of the reactive power limit value (Q _j,DG ^max ) of the individual power converter input by the limit reactive power input module 6331 to the limit value (Q _j,DG ^max ) for the total reactive power It is multiplied by the reactive power control value (ΔQ _cont ) input by the module 6333 to calculate the command value (Q _j,DG ^set ) for the reactive power.

The active power calculation module 633b is a component that calculates a command value of active power for each power conversion device, and the command value is calculated according to the ratio of the active power threshold value of each power conversion device to the sum of the total threshold values of active power. make the output happen. Therefore, the active power calculation module 633b multiplies the active power control value calculated by the active power control value calculation module 6314 by the ratio of the active power limit value so that the command value of active power is calculated, through which Active power can be evenly distributed to each individual power converter, and the frequency at the load end can be maintained close to the rated frequency. The active power calculation module 633b may include a limit active power input module 6335, a total limit active power calculation module 6336, an active power control value input module 6337, and an active power command value calculation module 6338. can

The limit active power input module 6335 is a configuration for inputting active power limit value information for an individual power converter for which a command value is to be calculated, and a limit value (ΔP) for active power derived from the active power derivation module 632b. _j,DG ^max ).

The total limit active power calculation module 6336 is a component that calculates the sum of active power limit values for all power converters in the switchboard device, and the effective power derived by the active power deriving module 632b for each individual power converter. Calculation is made by summing the limits for power (ΔP _{j, DG} ^max ).

The active power control value input module 6337 is a configuration for inputting information on the control value of active power set to match the rated voltage of the load stage, and the value calculated by the active power control value calculation module 6314 ( ΔP _cont ).

The active power command value calculation module 6338 is a component that calculates the command value of active power for each power conversion device, and is calculated by the total limit active power calculation module 6336 as shown in Step 3 of FIG. 14 (b). Enter the active power control value as the ratio of the active power limit value (ΔP _j,DG ^max ) of the individual power conversion device input by the limit active power input module 6335 to the limit value (ΔP _j,DG ^max ) for the total active power It is multiplied by the active power control value (ΔP _cont ) input by the module 6337 to calculate the command value (P _j,DG ^set ) for the active power.

The control regulation module 634 calculates and determines the values of reactive power and active power provided to each individual power conversion device, and determines the values of reactive power and active power calculated by the command value calculation module 633. The final values of reactive power and active power are determined by comparing the command value with the threshold value derived by the threshold value derivation module 632 . The control adjustment module 634 may include a threshold value comparison module 634a and a final command value determination module 634b.

The threshold comparison module 634a is configured to compare the command value calculated by the command value calculation module 633 with the limit value derived by the limit value derivation module 632, and the comparison for each of reactive power and active power is performed. make it happen Therefore, the threshold value comparison module 634a compares the command value (Q _{j, DG} ^set ) of reactive power with the threshold value (Q _{j, DG} ^max ) of reactive power as shown in Step 4 of FIG. 14 (a) (b), The command value of active power (P _{j, DG} ^set ) is compared with the limit value of active power (ΔP _{j, DG} ^max ).

The final command value determination module 634b is a component that determines the values of reactive power and reactive power finally provided to individual power converters, and is determined according to the comparison result by the threshold value comparison module 634a. More specifically, as shown in Step 5 of FIG. 14(a), the final command value determining module 634b sets the reactive power command value (Q _{j, DG} ^set ) within the reactive power limit value (Q _{j, DG} ^max ) range. If it is within, the final command value is determined as it is the command value of reactive power (Q _{j, DG} ^set ), and the command value of reactive power (Q _{j, DG} ^set ) exceeds the limit value (Q _{j, DG} ^max ) of reactive power. In this case, the limit value of reactive power (Q _{j, DG} ^max ) is determined as the final command value, and as shown in Step 5 of FIG. 14 (b), the command value of active power (P _{j, DG} ^set ) is the limit value of active power. If it is within the range of (ΔP _j,DG ^max ), the final command value is determined as it is the active power command value (P _j,DG ^set ), and the active power command value (P _j,DG ^set ) is the active power limit value (ΔP _j,DG ^max ) is exceeded, the limit value of active power (ΔP _j,DG ^max ) is determined as the final command value. Therefore, the final command value determination module 634b controls the voltage and frequency of the load stage according to the rated voltage and frequency, while supplying reactive power and active power to each power converter within the maximum limit range. Thus, it is possible to maintain a stable state even with rapid power fluctuations caused by harmonics and surges. Therefore, as a result of controlling the reactive power and active power according to the voltage and frequency through the stabilization unit 63 (see FIG. 16(b)), the voltage is higher than that of the conventional power factor control method (see FIG. 16(a)). And it can be seen that the stability of current and frequency is improved, and the variability of reactive power and active power is also reduced.

The abnormal signal generating module 635 is configured to generate an abnormal signal for rapid power fluctuation, and the command value of reactive power (Q _{j, DG} ^set ) is determined by the threshold value comparison module 634a as the threshold value of reactive power (Q _j,DG ^max ) or when the active power command value (P _j,DG ^set ) exceeds the active power limit value (ΔP _j,DG ^max ), a signal for abnormal occurrence is generated. Accordingly, the abnormal signal generation module 635 detects power fluctuations caused by surges, harmonics, etc. and notifies them, so that inspection and countermeasures can be made quickly.

The storage unit 64 stores information necessary for the operation of the integrated switchboard and information generated from the integrated switchboard, and the control unit 65 controls the overall operation of the controller 6 .

In the above, the applicant has described various embodiments of the present invention, but such embodiments are only one embodiment for implementing the technical idea of the present invention, and any changes or modifications are made according to the present invention as long as the technical idea of the present invention is implemented. should be construed as falling within the scope of

1: housing 2: electrical equipment 3: sensor unit
4: battery unit 5: fire prevention unit 6: controller
11: door 12: display 31: image sensing unit
32: facility sensing unit 33: battery sensing unit 51: cooling circulation unit
52: fire extinguishing unit 61: transmission and reception unit 62: fire response unit
63: stabilization unit 64: storage unit 65: control unit
311: thermal imaging camera 312: movement module 313: guide module
621: judgment module 622: movement control module 623: diagnosis module
624: battery module

Claims (6)

a housing forming an outer shape; an electric facility located inside the housing to control the reception and distribution of electric power; A controller for controlling the operation of the electrical equipment; includes,
The electrical equipment includes a power converter that converts and delivers supplied power,
The controller includes a fire response unit that detects the occurrence of a fire in the housing, and a stabilization unit that calculates reactive power and active power to match the rated voltage and frequency and provides them to the power conversion device. switchboard. According to claim 1,
The integrated switchboard includes a facility sensing unit that measures the state of each electrical facility, an image sensing unit that outputs a thermal image of each electrical facility, a battery sensing unit that measures the state of the battery unit, and measures the power state of the load end. It includes a load shedding sensing unit,
The fire response unit analyzes information output from the facility sensing unit to detect an abnormality in each electrical facility, and a movement control module that moves a thermal imaging camera to the front of an electrical facility that has been determined to have an abnormality in the determination module. And, a diagnostic module for diagnosing a fire state using an image captured by the thermal imaging camera, and a battery for detecting an abnormality in the battery unit by analyzing information output from the battery sensing unit so that electrical equipment can be inspected. contains a module,
The stabilization unit analyzes the information output from the load stage sensing unit, and a variable control module that calculates control values of reactive power and active power according to voltage and frequency at the load stage, and reactive power and effective power of each individual power conversion device. Command values for reactive power and active power of each individual power converter according to the limit value derivation module that derives the limit value for power and the ratio of reactive power and active power of each individual power converter to the total maximum reactive power and active power A command value calculation module that calculates, a control regulation module that determines final command values for reactive power and active power within the range of limits for reactive power and active power of each individual power converter, and individual power converters An integrated switchboard characterized in that it comprises an abnormal signal generating module for generating a signal for detecting an abnormality when the command values of reactive power and active power for the According to claim 2,
The determination module includes a measurement information collection module that collects information output from the facility sensing unit, a reference value setting module that sets a reference value for a value output from the facility sensing unit, and an environment that collects environment information about the surroundings of the housing. An information collection module, a reference value correction module for correcting the reference value set by the reference value setting module according to the environmental information collected by the environment information collection module, and a reference value comparison module for comparing the information output by the facility sensing unit with the reference value and an excess rate calculation module that calculates the degree to which each measured value exceeds a reference value, an abnormality index calculation module that calculates an abnormality index for the degree of abnormality by summing the excess rate, and an electrical installation in which the calculated abnormality index is higher than a certain value It includes a shooting confirmation module that moves the thermal imaging camera so that shooting is performed,
The movement control module includes an initial position setting module for setting the initial position of the thermal imaging camera, an abnormality information receiving module for receiving information on the occurrence of abnormality in electrical equipment detected by the determination module, and specifying the location of the electrical equipment in which the abnormality occurred. An abnormal position specifying module that calculates the movement direction and distance of the thermal imaging camera according to the initial position and the abnormal position; An integrated switchboard characterized in that it includes a moving operation module that moves and takes a picture from the front of an electrical facility where an abnormality occurs, and a final location storage module that stores the final location where the picture was taken. According to claim 3,
The diagnostic module includes a photographing information receiving module for receiving photographic information of electrical equipment photographed by a thermal imaging camera, a reference image storage module for storing a reference image of the electrical equipment in a normal state, and a reference image according to the ambient temperature. A reference image correction module that corrects the image, an image comparison module that compares a captured image with a reference image, a temperature rise measurement module that measures the temperature rise for each unit area according to image comparison, and the temperature rise for each unit area is summed. It includes a rising degree summation module, a fire index calculation module that calculates a fire index according to the summed rise, and a fire blocking module that performs a fire blocking operation according to the calculated fire index,
The fire blocking module includes a warning generating module that generates a warning about the risk of fire when the fire index exceeds the first warning value, and a circulation operation module that discharges the air in the housing to the outside along with the warning to make cooling , In case the fire index exceeds the second warning value higher than the first warning value, it is characterized by including a system blocking module that stops the operation of the integrated switchboard, and a fire extinguishing operation module that injects extinguishing substances into the housing together with blocking the system. Integrated switchboard made with. According to claim 4,
The variable control module includes a voltage control module that calculates a control value for reactive power using a voltage value at the load end and a frequency control module that calculates a control value for active power using a frequency value at the load end. include,
The voltage control module includes a measurement voltage input module for inputting information on the measured voltage of the load stage output from the load stage sensing unit, and a control value for reactive power according to the rated voltage already established at the load stage and the measured voltage. Including a reactive power control value calculation module that calculates,
The frequency control module calculates a control value for active power according to a measurement frequency input module for inputting information on the measurement frequency of the load stage output from the load stage sensing unit, and a rated frequency and measurement frequency preset at the load stage. Including an active power control value calculation module that does,
The limit value derivation module includes a reactive power derivation module for deriving a limit value for reactive power and an active power derivation module for deriving a limit value for active power,
The reactive power deriving module uses a maximum apparent power input module for inputting the maximum apparent power of the power converter, a measured active power value input module for inputting a measured value of active power, and a maximum apparent power and measured active power values. Including a reactive power limit value calculation module for calculating the reactive power limit value of an individual power converter by doing so,
The active power deriving module uses a maximum active power input module for inputting the maximum active power of the power converter, a measured active power value input module for inputting a measured value of active power, and a maximum active power and measured active power values. An integrated switchboard comprising an active power limit calculation module for calculating the active power limit of each power converter by doing so. According to claim 5,
The command value calculation module includes a reactive power calculation module for calculating a command value for reactive power and an active power calculation module for calculating a command value for active power;
The reactive power calculation module includes a limit reactive power input module for inputting limit value information on the reactive power derived from the limit value derivation module, a total limit reactive power calculation module for calculating the sum of limit reactive powers for the entire power conversion device, and , the reactive power control value input module for inputting the control value information of the reactive power calculated by the variable control module, and the control value of the reactive power according to the ratio of the limit reactive power of the individual power converter to the total limit reactive power It includes a reactive power command value calculation module that calculates a reactive power command value by distributing,
The active power calculation module includes a limit active power input module for inputting threshold information on active power derived from the limit value derivation module, a total limit active power calculation module for calculating the sum of limit active power for the entire power conversion device, and , the active power control value input module for inputting the control value information of the active power calculated by the variable control module, and the control value of the active power according to the ratio of the limit active power of the individual power converter to the total limit active power An integrated switchboard comprising an active power command value calculation module for distributing and calculating an active power command value.

Images