Wireless low voltage branch smart switchboard capable of monitoring power and circuit breaker status information

Abstract

This main circuit breaker comprises: a main measurement device disposed in the main circuit breaker; and a wireless communication unit configured to transmit a wireless signal to a wireless data collection device. The main measurement device includes: a main measurement unit having a plurality of terminal contact units formed to be connected to a plurality of branch circuit breakers and connected to a terminal unit for each phase of the plurality of branch circuit breakers through each input terminal of the plurality of terminal contact units; and an optical transmission and reception module for transmitting circuit breaker status information of the main circuit breaker to the main measurement unit. The main circuit breaker may further include a light reflection sticker in which a light absorption region and light reflection regions are formed.

Description

Wireless low-voltage branch smart distribution panel capable of monitoring power and circuit breaker status information

[0001] The present invention relates to a wireless low-voltage branch smart distribution panel. More specifically, it relates to a wireless low-voltage branch smart distribution panel capable of monitoring power and circuit breaker status information.

[0002] A low-voltage branch smart distribution panel is used to efficiently monitor the status information (open / closed status) of circuit breakers and switching devices used in branch distribution panels of low-voltage load systems and power information on the load side.

[0003] In this regard, devices that measure power information at the circuit breaker load end by attaching a measurement module to the load end of the branch circuit breaker are being released. Furthermore, there are products that predict circuit breaker status information using the load end's energized voltage and current information.

[0004] Typically, low-voltage branch distribution panels are equipped with a main Molded Case Circuit Breaker (MCCB) and branch MCCBs / MCBs. Monitoring the power information of the MCCB / MCB load system and the status of the circuit breaker (closing and opening) requires a measuring instrument and a circuit breaker contact signal receiver.

[0005] Depending on the MCCB / MCB device, the status contact signal AX (auxiliary switch) / AL (alarm switch) can be extracted and used by connecting it to the input contact of a general-purpose RTU (remote terminal unit). Power information of the load system can be measured through a separate measuring device by installing a CT (Current Transformer) and VT (Voltage Transformer) for measuring on the main and branch lines.

[0006] However, these products do not capture information about the physical state of the circuit breaker, making it difficult to clearly determine the energized state when the circuit breaker is turned on or off. Therefore, they face the limitation of requiring additional algorithmic operating devices to clearly determine the energized state when the circuit breaker is turned on or off.

[0007] In this regard, Fig. 1 illustrates the configuration of a low-voltage branch switchboard related to the present invention. Referring to Fig. 1, the low-voltage branch switchboard may include an RTU (10), a multi-channel measuring device (20), a main circuit breaker (300), and a plurality of branch circuit breakers (400). The main circuit breaker (300) and branch circuit breakers (400) of the low-voltage branch switchboard are illustrated as a branch switchboard composed of MCCB / MCBs.

[0008] In order to monitor the power information of the low-voltage load system, current measuring CTs may be installed on the load lines of the branch circuit breakers. A VT may be placed at the inlet of the main circuit breaker (300). The multi-channel measuring device (20) may calculate power and energy amounts using the voltage measurement information at the inlet of the main circuit breaker (300) and the current measurement information of the load circuit breaker.

[0009] The RTU (10) collects contact information from the MCCB / MCB that provides the status contact (AX / AL). The RTU (10) and the multi-channel measuring device (20) can be equipped with additional communication functions and are structured to transmit data to a power monitoring system that monitors the distribution panel. The RTU (10) and the multi-channel measuring device (20) are digital devices and can generally directly extract operating power from the inlet of the main circuit breaker (300) and use it as control power.

[0010] Meanwhile, low-voltage branch distribution panels have disadvantages in terms of space constraints and cost, such as CTs installed at the MCCB / MCB load end, a large amount of signal providing cables, and cabling costs. The CT sensors (CT1 to CT6) installed at the MCCB / MCB load end are structured to input current signals to a multi-channel measuring device, which can then be combined with the voltage signals at the outlet of the main circuit breaker (300) to provide power measurement information.

[0011] As the number of MCCBs / MCBs increases and the number of CTs increases, additional multi-channel measuring devices must be installed due to the increase in CT input signals, which causes additional space / cost constraints. In addition, in order to monitor the status information of MCCBs / MCBs, MCCBs / MCBs with AX / AL and RTU must be applied, resulting in a distribution panel structure that also adds to the space / cost constraints. Distribution panels that require load measurement and circuit breaker status monitoring can be provided in the form of a distribution panel with this structure. However, it has an inefficient structure that entails many costs, such as installing CTs including digital devices that constitute the distribution panel and circuit breakers that provide status contacts (AX / AL).

[0012] An object of the present invention is to provide a method for efficiently constructing operating information of a low-voltage branch distribution panel.

[0013] The purpose of the present invention is to provide a package module of a tag-type main measuring instrument that can be attached to a circuit breaker and a switch to determine power and circuit breaker status information of a low-voltage load system and an infrared optical transmitter / receiver for obtaining circuit breaker status information.

[0014] The purpose of the present invention is to propose an electronic tag device using a wireless transmission method for obtaining power information and status information of a branch circuit breaker of a distribution panel.

[0015] The purpose of the present invention is to obtain circuit breaker status information through a small sensor capable of transmitting and receiving light and a light reflective sticker capable of absorbing and reflecting light.

[0016] In order to achieve the above object of the present invention, according to an embodiment of the present invention, a main circuit breaker includes a main measuring device arranged on the main circuit breaker; and a wireless communication unit configured to transmit a wireless signal to a wireless data collection device. The main measuring device includes a plurality of terminal contact portions formed to be connected to the plurality of branch circuit breakers, and a main measuring unit connected to a terminal portion of each phase of the plurality of branch circuit breakers through each input terminal of the plurality of terminal contact portions; and an optical transceiver module for transmitting circuit breaker status information of the main circuit breaker to the main measuring unit. The main circuit breaker further includes a light-reflective sticker having a light-absorbing region and a light-reflecting region formed thereon, and the light-reflective sticker is attached to a specific region whose position changes depending on the blocking state of the main circuit breaker, and the amount of reflection varies depending on the blocking state of the main circuit breaker, and the main measuring unit can measure whether the main circuit breaker is turned ON / OFF / TRIP based on the amount of reflection.

[0017] According to an embodiment, the specific area may be provided with a leg structure configured to couple one side of a manual lever of the main circuit breaker and an inner side of the main circuit breaker.

[0018] Depending on the blocking state of the main circuit breaker, the positions of the light absorption area and light reflection area of ​​the light reflective sticker attached to the leg structure may change.

[0019] According to an embodiment, the amount of reflection may vary by changing the position of the rotation axis of the leg structure depending on the blocking state of the main circuit breaker.

[0020] According to an embodiment, the light reflective sticker may be installed at a predetermined distance from the light transmitting / receiving module.

[0021] According to an embodiment, the operation mode determined by the main measuring device may be divided into a first mode indicating an ON / OFF state and a second mode additionally providing a TRIP state. The optical reflection areas may include a first reflection area and a second reflection area. The optical transceiver module may include a first optical transceiver for transmitting an optical signal to the first reflection area, a second optical transceiver for receiving an optical signal reflected from the first reflection area, and a third optical transceiver for transmitting an optical signal to the second reflection area, and a fourth optical transceiver for receiving an optical signal reflected from the second reflection area.

[0022] According to an embodiment, when the optical transceiver module outputs an optical signal, the optical absorption region and the optical reflection regions are changed according to a change in the state of the main circuit breaker, and the optical signal can be received by the optical receiving unit of the optical transceiver module only in the changed reflection regions.

[0023] According to an embodiment, the main measuring device can detect the ON / OFF state of the circuit breaker status contact signal depending on whether the optical signal transmitted from the first optical transceiver is received by the second or third optical transceiver, and can detect the TRIP state of the main circuit breaker depending on whether the optical signal received by the fourth optical transceiver is transmitted by the second or third optical transceiver.

[0024] According to an embodiment, a plurality of measuring devices are arranged on the plurality of branch circuit breakers, and the wireless data collection device can receive second data information associated with each circuit breaker status information from the plurality of measuring devices. Each of the plurality of measuring devices can include a branch measuring unit that measures second power information of each of the plurality of branch circuit breakers; and an optical transceiver module that transmits the second circuit breaker status information of each of the plurality of branch circuit breakers to the branch measuring unit.

[0025] According to an embodiment, the main measuring device can detect operating circuit breakers among the plurality of branch breakers based on the second circuit breaker status information of the plurality of branch breakers when the main circuit breaker is in an ON state based on the circuit breaker status information received through the optical transceiver module, and receive third power information from the branch measuring unit of the operating circuit breakers.

[0026] According to an embodiment, the wireless data collection device can perform power monitoring and energy demand prediction based on circuit breaker status information and power information of the main circuit breaker, second circuit breaker status information of each of the plurality of branch circuit breakers, and the third power information.

[0027] The technical effects of the wireless low-voltage branch smart distribution board capable of monitoring power and circuit breaker status information according to this specification can be summarized as follows, but are not limited thereto and can be changed depending on the application.

[0028] According to this specification, power and circuit breaker status information of a branch load system can be collected in an integrated manner through a circuit breaker-attached electronic tag in a low-voltage branch distribution panel, and branch distribution panel power monitoring service and energy demand forecasting management can be performed using the collected power and circuit breaker information.

[0029] According to this specification, by installing products utilizing optical and wireless technologies in low-voltage distribution panels, the spatial constraints of having to install separate monitoring devices inside the distribution panels can be overcome.

[0030] According to this specification, safety can be ensured through electrical insulation from the system line.

[0031] Figure 1 shows the configuration of a low-voltage branch distribution board related to the present invention.

[0032] Figure 2 shows the configuration of a wireless low-voltage branch smart distribution panel capable of monitoring power and circuit breaker status information according to the present specification.

[0033] Figure 3 shows a block diagram of the main measuring device of Figure 2.

[0034] FIG. 4 shows a diagram of changes in the first and second reflection areas according to changes in the TRIP state and the ON / OFF state in relation to circuit breaker status information according to an embodiment, and transmission / reception of an optical signal according to the changes.

[0035] Fig. 5 is a block diagram showing the configuration of the branch circuit breaker of Fig. 2.

[0036] The above-described purpose of the present invention, the configuration of the present invention for achieving the purpose, and the operational effects thereof may be more clearly understood through the following description of a preferred embodiment of the present invention with reference to the attached drawings.

[0037] Figure 2 illustrates the configuration of a wireless low-voltage branch smart distribution board capable of monitoring power and circuit breaker status information according to the present specification. Figure 2 illustrates a smart distribution board (1000) comprised of a main circuit breaker (300) to which a main measuring device (100) is attached and six branch circuit breakers (400). Figure 3 illustrates a block diagram of the main measuring device of Figure 2.

[0038] Referring to FIGS. 2 and 3, a wireless low-voltage branch smart distribution board capable of monitoring power and circuit breaker status information and its main circuit breaker according to the present specification will be described. In this regard, an object of the present invention is to provide a method for efficiently establishing operation information of a low-voltage branch distribution board. An object of the present invention is to provide a tag-type main measuring instrument that can be attached to a circuit breaker and a switch to determine power and circuit breaker status information of a low-voltage load system, and a package module of an infrared optical transmitter / receiver for acquiring circuit breaker status information. An object of the present invention is to propose an electronic tag device of a wireless transmission method for acquiring power information and status information of a branch circuit breaker of a distribution board. An object of the present invention is to acquire circuit breaker status information through a small sensor capable of optical transmission and reception and an optical reflective sticker capable of light absorption and reflection.

[0039] A smart distribution board (1000) may be configured to include a main measuring device (100) and a wireless data collection device (500). The smart distribution board (1000) may further be configured to include a plurality of measuring devices (200), a main circuit breaker (300), and a plurality of branch circuit breakers (400).

[0040] Accordingly, power information and circuit breaker status information of each branch line of a smart distribution board (1000) composed of a main circuit breaker (300) and a plurality of branch circuit breakers (400) can be obtained. In this regard, in order to measure low-voltage system current flow information and obtain circuit breaker status information, a CT (Current Transformer) / VT (Voltage Transformer) and a status contact signal provided within the circuit breaker can be externally extracted. However, it is impossible to obtain status information from a circuit breaker that does not provide a status contact signal. Therefore, in the present invention, power information obtained from an electronic tag and circuit breaker status information received through an optical transceiver can be provided even from a circuit breaker (main and branch circuit breaker) that does not provide a status contact signal.

[0041] The main circuit breaker (300) and the plurality of branch circuit breakers (400) are implemented in the form of a molded case and may therefore be referred to as an MCCB (Molded Case Circuit Breaker). The main circuit breaker (300) and the plurality of branch circuit breakers (400) may be referred to as an MCCB main circuit breaker and MCCB branch circuit breakers, respectively.

[0042] The plurality of measuring devices (200) is illustrated as including the first measuring device (200a) to the sixth measuring device (200f), but is not limited thereto and may be varied depending on the application. The plurality of branch circuit breakers (400) is illustrated as including the first branch device (400a) to the sixth branch device (400f), but is not limited thereto and may be varied depending on the application.

[0043] The main measuring device (100) may be placed on the main circuit breaker (300). The main circuit breaker (300) may be connected to a low-voltage system. The wireless data collection device (500) may be configured to collect data information from the main circuit breaker (300) and a plurality of measuring devices (200) connected to the main circuit breaker (300). The wireless data collection device (500) may be configured to collect data information from the main measuring device (100). The wireless data collection device (500) may be configured to collect data information from a plurality of measuring devices (200) placed on each of a plurality of branch circuit breakers (400).

[0044] Each of the main measuring device (100) and the plurality of measuring devices (200) may be implemented as an electronic tag (ES-Tag), but is not limited thereto. Each of the main measuring device (100) and the plurality of measuring devices (200) may be implemented in a configuration that transmits / receives various types of wireless signals depending on the application.

[0045] Electronic tags can be classified into four types: 1Pole (single phase), 2Pole (single phase), 3Pole (three phase, three wire), and 4Pole (three phase, four wire) according to the classification of the low voltage system. With regard to Fig. 3, the electronic tag can be configured as a product having 4 poles, but is not limited thereto and can be changed according to the application. The wireless data collection device (500) receives measurement and status information from a plurality of electronic tags, performs storage and management functions, and transmits the information to an upper device when necessary to enable the construction of a branch distribution panel operation system.

[0046] The main measuring device (100) can be placed on the front panel and internal area of ​​the main circuit breaker (300). Specifically, the main measuring device (100) can be placed on the upper area or lower area of ​​the front panel and internal area of ​​the main circuit breaker (300).

[0047] Meanwhile, the main circuit breaker (300) of the smart distribution board (1000) may be configured to include a main measuring device (100) and a wireless communication unit (50). The main measuring device (100) may be placed in the main circuit breaker (300) connected to the low-voltage system. The wireless communication unit (50) may be configured to transmit or receive a wireless signal to a wireless data collection device (500).

[0048] The main measuring device (100) may be provided with a plurality of terminal contacts (Pc1, Pc2, Pc3, Pc4) formed to be connected to a plurality of branch circuit breakers (400). The main measuring device (100) may be configured to include a main measuring unit (110) and an optical transmission / reception module (120). The main measuring device (100) may be configured to further include a light reflective sticker (130).

[0049] The main measuring unit (110) of the main measuring device (100) may be placed in the first region (100R1), which is the upper terminal, and the second region (100R2), which is the lower terminal, of the main circuit breaker (300). The optical transmission / reception module (120) and the optical reflective sticker (130) of the main measuring device (100) may be placed in the third region (100R3), which is the region adjacent to the manual lever (40) of the main circuit breaker (300). The third region (100R3) may be placed between the first region (R1) and the second region (100R2) of the main circuit breaker (300).

[0050] As described above, the smart distribution board (1000) is composed of a main measuring device (100) which is connected to the upper and lower terminals of the main circuit breaker (300) and is provided in an attachable form, and a wireless data collection device (500) which collects data information of a plurality of electronic tags. The main measuring device (100) and a plurality of measuring devices (200) attached to a plurality of branch circuit breakers (400) may have voltage / current sensors built into them.

[0051] The main measuring device (100) can perform a measuring function by spontaneously generating control power using a voltage source in a low-voltage system line by connecting to an upper or lower terminal contact. The electronic tag of the main measuring device (100) can be implemented as a self-powered wireless transmission measuring device that generates operating power from a terminal connected to each phase of a circuit breaker to measure voltage. The electronic tag of the main measuring device (100) can wirelessly utilize Bluetooth or IEEE802.15.4, which are suitable for a low-power consumption method, but is not limited thereto and can utilize any short-range wireless communication method.

[0052] In addition, the main measuring device (100) may be composed of an optical transceiver module (120) that outputs a circuit breaker status signal and an optical reflective sticker (130) attached to an internal state displacement part of the circuit breaker.

[0053] The main measuring unit (110) may be provided with a plurality of terminal contacts (Pc1, Pc2, Pc3, Pc4) formed to be connected to a plurality of branch circuit breakers (400). The number of the plurality of terminal contacts (Pc1, Pc2, Pc3, Pc4) is not limited to four and may be changed depending on the application. For example, the main circuit breaker (300) may be connected to the first branch device (400a) to the sixth branch device (400f) through the plurality of terminal contacts (Pc1, Pc2, Pc3) and three connection points.

[0054] The main measuring unit (110) can be connected to each terminal of each phase of a plurality of branch circuit breakers (400) through each input terminal of a plurality of terminal contacts (Pc1, Pc2, Pc3, Pc4). The optical transmission / reception module (120) can be configured to transmit circuit breaker status information of the main measuring device (100) or a plurality of measuring devices to the main measuring unit (110) through an electrical signal.

[0055] The main measuring unit (110) is connected to the terminal of each phase of the circuit breaker through each input terminal, and generates operating power on its own by the potential difference (AC110V~380V) induced at the input terminal. In addition, the main measuring unit (110) can also measure power information through the built-in CT / VT sensor. The main measuring unit (110) is connected to the optical transceiver module (120) through the power and circuit breaker status signal line, and can provide operating power from the main measuring unit (110) to the optical transceiver module (120).

[0056] The light reflective sticker (130) can be attached to the main measuring device (100) to read the positional displacement of the manual lever (40) that manually operates the closing and opening states of the circuit breaker. The light reflective sticker (130) can be attached to the main measuring device (100) to read the positional displacement of the mechanism part (30) connected to the manual lever (40).

[0057] The light reflective sticker (130) can be fixed to a specific area of ​​the structure whose position changes depending on the ON / OFF / TRIP status. The light reflective sticker (130) can be attached to a legger structure constituting the mechanism part (30) to read the positional displacement of the mechanism part (30) connected to the manual lever (40). The legger structure constituting the mechanism part (30) can be configured to couple one side of the manual lever (40) and the inner side of the main circuit breaker (300). The legger structure constituting the mechanism part (30) can be configured to rotate together when the main circuit breaker (300) is turned on / off / tripped.

[0058] The light reflective sticker (130) can be fixed to a specific area of ​​the leg structure whose position changes depending on the ON / OFF / TRIP status of the manual lever (40). The amount of reflection reflected through the light reflective sticker (130) can vary depending on the ON / OFF / TRIP status of the manual lever (40). Meanwhile, the main measuring unit (110) can measure whether the main circuit breaker (300) is ON / OFF / TRIP depending on the amount of reflection.

[0059] The light reflective sticker (130) can be formed with a light absorption region (LAR) and light reflection regions (R1, R2). The positions of the light absorption region (LAR) and light reflection regions (R1, R2) of the light reflective sticker (130) attached to the lever structure constituting the mechanism part (30) can be changed depending on the ON / OFF / TRIP state of the manual lever (40).

[0060] One of the light reflection areas (R1, R2) may indicate a TRIP state of the manual lever (40) and the other may indicate an ON / OFF state of the circuit breaker status contact signal. For example, the first position and the second position of the first light reflection area (R1) change in a first state, which is a TRIP state of the manual lever (40), and a second state, which is not a TRIP state. In addition, the third position and the fourth position of the second light reflection area (R2) change in a third state and a fourth state, which are ON / OFF states of the circuit breaker status contact signal.

[0061] Accordingly, the amount of reflection reflected from the light reflective sticker (130) may vary as the position of the rotational axis of the mechanism part (30) changes depending on the TRIP state of the main circuit breaker (300) and the ON / OFF / TRIP state of the circuit breaker status contact signal of the main circuit breaker (300). The amount of reflection may vary as the position of the rotational axis of the mechanism part (30) changes depending on the TRIP state of the main circuit breaker (300) and the ON / OFF / TRIP state of the circuit breaker status contact signal of the main circuit breaker (300).

[0062] The circuit breaker status signal output from the optical transceiver module (120) is provided in the form of an electrical signal, and the main measuring unit (110) of the main measuring device (100) can receive this signal to obtain physical actual operating status information of the circuit breaker. The operating mode determined by the main measuring device (100) can be divided into a first mode indicating an ON / OFF state and a second mode additionally providing a TRIP state. The optical reflection areas (R1, R2) can include a first reflection area (R1) and a second reflection area (R2).

[0063] The optical transceiver module (120) is composed of an optical transmitter and an optical receiver, and performs a function in which an output optical signal is input to the optical receiver through an optical reflective sticker (130). In addition, by measuring the amount of reflection of the optical signal, it outputs circuit breaker status displacement position information as an electrical signal and provides it as a status signal to each module equipped with an electronic tag.

[0064] The optical transceiver module (120) may include a first optical transceiver (121) that transmits an optical signal to a first reflection area (R1), and a second optical transceiver (122) that receives an optical signal reflected from the first reflection area (R1). The optical transceiver module (120) may include a third optical transceiver (123) that transmits an optical signal to a second reflection area (R2), and a fourth optical transceiver (124) that receives an optical signal reflected from the second reflection area (R2).

[0065] When the optical transceiver module (120) outputs an optical signal, the positions of the optical absorption region (LAR) and the optical reflection regions (R1, R2) may change depending on the state change of the main circuit breaker (300). The optical signal may be received by a specific optical transceiver of the optical transceiver module (120) corresponding to the position of the changed optical reflection regions (R1, R2).

[0066] In this regard, FIG. 4 shows a diagram of changes in the first and second reflection areas according to changes in the TRIP state and the ON / OFF state in relation to circuit breaker status information according to an embodiment, and transmission / reception diagrams of optical signals according to the changes.

[0067] Figure 4(a) shows that the circuit breaker status information is in the ON state and not in the TRIP state. The optical signal indicating the ON state transmitted from the first optical transceiver (121) is reflected from the first reflection area (R1) and received by the second optical transceiver (122). The optical signal indicating the non-TRIP state transmitted from the third optical transceiver (123) is reflected from the second reflection area (R2) and received by the fourth optical transceiver (124).

[0068] Figure 4(b) shows that the circuit breaker status information is in the ON state and the TRIP state. The optical signal indicating the ON state transmitted from the first optical transceiver (121) is reflected from the first reflection area (R1) and received by the second optical transceiver (122). The optical signal indicating the TRIP state transmitted from the second optical transceiver (122) is reflected from the second reflection area (R2b) and received by the fourth optical transceiver (124).

[0069] Fig. 4(c) indicates that the circuit breaker status information is OFF and not TRIP. The optical signal indicating the OFF state transmitted from the first optical transceiver (121) is reflected from the first reflection area (R1b) and received by the third optical transceiver (123). The optical signal indicating that the TRIP state transmitted from the third optical transceiver (123) is reflected from the second reflection area (R2) and received by the fourth optical transceiver (124).

[0070] Figure 4(d) shows that the circuit breaker status information is OFF and TRIP. The optical signal indicating OFF state transmitted from the first optical transceiver (121) is reflected from the first reflection area (R1b) and received by the third optical transceiver (123). The optical signal indicating TRIP state transmitted from the second optical transceiver (122) is reflected from the second reflection area (R2b) and received by the fourth optical transceiver (124).

[0071] Referring to FIGS. 2 and 5, the main measuring device (100) can detect the ON / OFF state of the circuit breaker status contact signal depending on whether the optical signal transmitted from the first optical transceiver (121) is received by the second or third optical transceiver (122, 123). In addition, the main measuring device (100) can detect the TRIP state of the main circuit breaker depending on whether the optical signal received by the fourth optical transceiver (124) is transmitted by the second and third optical transceiver (122).

[0072] Meanwhile, the optical transmission / reception module (120) and the optical reflective sticker (130) may be installed at a predetermined distance depending on the optical transmission / reception method. In this regard, the optical reflective sticker (130) may be installed at a predetermined distance of 10 mm from the optical transmission / reception module (120).

[0073] The distance between the optical transceiver module (120) and the optical reflective sticker (130) is not limited thereto and may vary depending on the frequency band and application of the signal. The distance between the optical transceiver module (120) and the optical reflective sticker (130) may vary flexibly depending on the optical output characteristics. The optical transceiver module (120) may be designed to be attached to a location where mechanical displacement can be read using a semiconductor-type infrared transceiver component as an ultra-small module.

[0074] Meanwhile, in a wireless low-voltage branch smart distribution board capable of monitoring power and circuit breaker status information according to the present specification, not only the status information of the main circuit breaker (300) but also the status information of multiple branch circuit breakers (400) can be detected. In this regard, FIG. 5 is a block diagram showing the configuration of the branch circuit breaker of FIG. 2.

[0075] Referring to FIGS. 2 to 5, the detection of status information of multiple branch circuit breakers (400) and the operation of the main circuit breaker (300) and the wireless data collection device (500) are described.

[0076] In this regard, a plurality of measuring devices (200) may be placed on a plurality of branch circuit breakers (400). The wireless data collection device (500) may receive second data information associated with each circuit breaker status information from the plurality of measuring devices (200). Each of the plurality of measuring devices (200) may include a branch measuring unit (210), an optical transceiver module (220), and an optical reflective sticker (230).

[0077] The branch measuring unit (210), the optical transmission / reception module (220), and the optical reflective sticker (230) of the plurality of measuring devices (200) may correspond to the main measuring unit (110), the optical transmission / reception module (120), and the optical reflective sticker (230) of the main measuring device (100), respectively. The branch measuring unit (210) may measure the second power information of each of the plurality of branch breakers (400). The optical transmission / reception module (220) may transmit the second circuit breaker status information of each of the plurality of branch breakers (400) to the branch measuring unit (210) through an electrical signal.

[0078] The main measuring device (100) can obtain second circuit breaker status information of a plurality of branch circuit breakers (400) based on circuit breaker status information received through the optical transceiver module (120) when the main circuit breaker (300) is in the ON state. Therefore, the main measuring device (100) can reduce detection complexity by obtaining second circuit breaker status information of a plurality of branch circuit breakers (400) only when the main circuit breaker (300) is in the ON state.

[0079] The main measuring device (100) can detect operating circuit breakers among the plurality of branch circuit breakers (400) based on the second circuit breaker status information of the plurality of branch circuit breakers (400). The main measuring device (100) can receive third power information from the branch measuring unit (210) of the operating circuit breakers. Accordingly, the main measuring device (100) can predict energy consumption based on the power consumption of the operating branch circuit breakers when the main circuit breaker (300) is in the ON state.

[0080] The wireless data collection device (500) can perform power monitoring and energy demand prediction based on the circuit breaker status information and power information of the main circuit breaker (300), the second circuit breaker status information of each of the plurality of branch circuit breakers (400), and the third power information of the operating branch circuit breakers (400).

[0081] The above describes a wireless low-voltage branch smart distribution panel capable of monitoring power and circuit breaker status information according to this specification. The technical benefits of the wireless low-voltage branch smart distribution panel capable of monitoring power and circuit breaker status information according to this specification can be summarized as follows, but are not limited thereto and can be modified depending on the application.

[0082] According to this specification, power and circuit breaker status information of a branch load system can be collected in an integrated manner through a circuit breaker-attached electronic tag in a low-voltage branch distribution panel, and branch distribution panel power monitoring service and energy demand forecasting management can be performed using the collected power and circuit breaker information.

[0083] According to this specification, by installing products utilizing optical and wireless technologies in low-voltage distribution panels, the spatial constraints of having to install separate monitoring devices inside the distribution panels can be overcome.

[0084] According to this specification, safety can be ensured through electrical insulation from the system line.

[0085] The embodiments described above are embodiments that implement the present invention, and those skilled in the art will appreciate that various modifications and variations can be made without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are intended to illustrate rather than limit the technical spirit of the present invention, and the scope of the technical spirit of the present invention is not limited by these embodiments. In other words, the protection scope of the present invention should be interpreted by the following claims, and all technical ideas within a scope equivalent thereto should be interpreted as being included within the scope of the rights of the present invention.

Claims

1. Main measuring device placed on the main circuit breaker; and A wireless communication unit configured to transmit a wireless signal to a wireless data collection device, The above main measuring device is, A main measuring unit having a plurality of terminal contacts formed to be connected to a plurality of branch circuit breakers, and connected to a terminal for each phase of the plurality of branch circuit breakers through each input terminal of the plurality of terminal contacts; An optical transceiver module that transmits circuit breaker status information of the main circuit breaker to the main measuring unit; and Includes a light reflective sticker in which light absorbing areas and light reflecting areas are formed, The above light reflective sticker is attached to a specific area whose position changes depending on the blocking status of the main circuit breaker, and the amount of reflection changes depending on the blocking status of the main circuit breaker. The main circuit breaker, wherein the main measuring unit measures the blocking status of the main circuit breaker according to the amount of reflection.

2. In paragraph 1, The above specific area is provided with a leg structure configured to couple one side of the manual lever of the main circuit breaker and the inner side of the main circuit breaker, A main circuit breaker characterized in that the positions of the light absorption area and light reflection area of ​​the light reflective sticker attached to the leg structure change depending on the blocking state of the main circuit breaker.

3. In paragraph 2, A main circuit breaker characterized in that the amount of reflection changes as the position of the rotation axis of the leg structure changes depending on the blocking state of the main circuit breaker.

4. In paragraph 2, The above light reflective sticker is installed at a predetermined distance from the above light transmitting / receiving module, the main circuit breaker.

5. In paragraph 1, The operating mode determined by the above main measuring device is divided into a first mode indicating an ON / OFF state and a second mode additionally providing a TRIP state. The above light reflection areas include a first reflection area and a second reflection area, The above optical transceiver module. A first optical transceiver for transmitting an optical signal to the first reflection area, a second optical transceiver for receiving an optical signal reflected from the first reflection area; and A main circuit breaker comprising a third optical transceiver for transmitting an optical signal to the second reflection area, and a fourth optical transceiver for receiving an optical signal reflected from the second reflection area.

6. In paragraph 1, A main circuit breaker in which, when the optical transmission / reception module outputs an optical signal, the position of the optical reflection sticker changes according to a change in the state of the main circuit breaker, and the optical signal is received by the optical receiving unit of the optical transmission / reception module only in the changed reflection areas.

7. In paragraph 5, The above main measuring device is, Detecting the ON / OFF state of the circuit breaker status contact signal depending on whether the optical signal transmitted from the first optical transceiver is received by the second or third optical transceiver, A main circuit breaker that detects the TRIP state of the main circuit breaker depending on whether the optical signal received from the fourth optical transceiver is transmitted from the second or third optical transceiver.

8. In paragraph 1, A plurality of measuring devices are arranged on the plurality of branch circuit breakers, and the wireless data collection device receives second data information associated with each circuit breaker status information from the plurality of measuring devices, Each of the above multiple measuring devices, A branch measuring unit for measuring second power information of each of the plurality of branch circuit breakers; and A main circuit breaker comprising an optical transceiver module for transmitting status information of each of the second circuit breakers of the plurality of branch circuit breakers to the branch measuring unit.

9. In paragraph 8, The above main measuring device is, If the main circuit breaker is in the ON state based on the circuit breaker status information received through the optical transceiver module, operating circuit breakers among the plurality of branch circuit breakers are detected based on the second circuit breaker status information of the plurality of branch circuit breakers, A main circuit breaker that receives third power information from the branch measuring units of the above operating circuit breakers.

10. In paragraph 9, The above wireless data collection device, A main circuit breaker that performs power monitoring and energy demand prediction based on circuit breaker status information and power information of the main circuit breaker, second circuit breaker status information of each of the plurality of branch circuit breakers, and the third power information.

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