KR20210034473A - Lightning rod system based on internet of things - Google Patents

Abstract

An IoT-based lightning protection system is disclosed. The lightning protection system is installed between the lightning rod ground lines and is connected to the sensor unit based on a wired or wireless communication interface and a sensor unit for detecting the current flowing into the lightning rod based on a current sensor, and is based on data received from the sensor unit. Thus, it includes a lightning analysis device for analyzing the magnitude, direction of inflow, inflow time, number of times, whether an induced or direct lightning strike, and a surge analysis device for receiving the analysis result from the lightning analysis device, and a sensor unit and a lightning strike. The analysis device may be located outside the building, and the surge analysis device may be located inside the building. The surge analysis apparatus may include a communication unit for a wired or wireless communication interface, and a display for displaying an analysis result.

Description

Internet of Things based lightning rod system {LIGHTNING ROD SYSTEM BASED ON INTERNET OF THINGS}

The present invention relates to a lightning protection system.

The lightning rod is a metal rod with a pointed tip, and is installed to prevent fire, damage, and human damage caused by thunderstorms and lightning strikes. Damage can be reduced by safely passing the shock current caused by lightning to the ground, and it is mainly built on the chimney of a house or on the roof of a building.

In the lightning protection system, after the lightning rod is installed on a roof or a rooftop, where it is easy to be hit by lightning, the lightning rod safely flows to the ground so that no current flows through the building. The lightning rod is said to have been invented by Benjamin Franklin, experimenting with kites, finding that lightning can first fall to a high place and allow the current to flow. When lightning falls on the lightning rod, electricity is distributed to the ground by the line connected to the lightning rod, and the damage to the building is reduced. In the case of a building, a lightning rod is connected to a ground electrode installed on the foundation of a building, and the lightning bolt flows to the ground.

A kind of electrical disturbance that occurs during lightning strikes, lightning, starting of heavy equipment, or electrical accidents is introduced through power lines and communication lines in the form of voltage impulses, which is collectively referred to as surge. Surge is somewhat different depending on the occurrence environment, but most of it is a very small amount of energy that flows into the system for a very short time within a millionth of a second and disappears, but the voltage is up to tens of thousands of volts and the current is thousands of amps. It is a problem because it can cause fatal damage to electric, electronic, and communication devices or malfunction.

The lightning protection system required by the Internet of Things (IoT) era demands differentiation from conventional facilities. That is, the data acquired from the LPS must be acquired and the information must be shared through communication. In addition, it is not possible to quickly check the lightning rods at an appropriate time because of the constraints of manpower and time to check the lightning rods scattered in various places inside the building or outdoor site.Therefore, it is necessary to share the soundness of the lightning rod, operation data and lightning information through real-time monitoring. There is.

In addition, real-time monitoring and data on the continuity of the grounding impedance and the lightweight change in grounding performance should be applied to the IoT LPS. Basic data for establishing EMP countermeasures and lightning warning systems should also be considered together with the IoT lightning protection system.

The technical problem to be achieved by the present embodiment is not limited to the technical problem as described above, and other technical problems may be inferred from the following embodiments.

The lightning protection system is installed between the first lightning rod and the ground line, the first sensor unit for detecting a current based on the first CT sensor and the second CT sensor and analyzing a surge based on the detected current, and the first sensor unit And a surge analysis device for receiving an analysis result from a wired or wireless communication interface, wherein the first sensor unit is based on the data sensed by the first and second CT sensors, the size of the surge, and the inflow direction. , Inflow time, frequency, including a lightning analysis device for analyzing whether an induced or direct lightning strike, the first sensor unit is located outside the building, the surge analysis device is located inside the building, the surge analysis device, the A communication circuit for a wired or wireless communication interface, and a display for displaying the analysis result may be included.

When the current is detected through the second CT sensor within a reference time after the current is detected through the first CT sensor, the lightning analysis device indicates that a direct lightning strike has occurred, and within a reference time after the current is detected through the second CT sensor. When a current is sensed through the first CT sensor, it may be determined that an induced lightning has occurred.

The lightning protection system is installed between the second lightning rod and the ground line, and senses a current based on the third and fourth CT sensors, and a second sensor unit for analyzing a surge based on the detected current, a surge protector, and an electric field strength. Further comprising a lightning alarm for detecting a lightning strike by analyzing the, a leakage current detector for detecting a leakage current of the ground line, and a ground impedance analyzer for detecting the presence or absence of a ground fault, the second sensor unit, the surge protector, Data obtained from the lightning alarm, the leakage current detector, and the ground impedance analyzer may be transmitted to the surge analysis device through a wired or wireless communication interface.

The surge analysis device outputs information for maintenance and repair of the lightning protection system through a prediction model in which learning is performed based on machine learning, and the prediction model includes the first sensor unit, the second sensor unit, Receive data received from the surge protector, the lightning alarm, the leakage current detector, and the ground impedance analyzer, and the information includes the life of the surge protector, the expected time of lightning occurrence, and the first lightning rod or the second lightning rod. May include reliability information of.

The lightning protection system is installed between the first lightning rod and the ground line, and is installed between the first sensor unit for sensing current based on the first and second CT sensors, the second lightning rod and the ground line, and is installed between the third CT sensor and the fourth CT sensor. A second sensor unit for sensing a current based on a sensor, and connected to the first sensor unit or the second sensor unit based on a wired or wireless communication interface, from the first sensor unit or the second sensor unit Based on the received data, it includes a surge analysis device including a lightning analysis device for analyzing the size, inflow direction, inflow time, number of surges, whether guided or direct lightning strikes, and the surge analysis device comprises: the wired Alternatively, it may include a communication circuit for a wireless communication interface, and a display for displaying the analysis result.

When the current is detected through the second CT sensor within a reference time after the current is sensed through the first CT sensor, the lightning analysis device indicates that a direct lightning strike has occurred, and within a reference time after the current is detected through the second CT sensor. When a current is sensed through the first CT sensor, it may be determined that an induced lightning has occurred.

The lightning protection system further includes a surge protector, a lightning alarm for detecting a lightning by analyzing electric field strength, a leakage current detector for detecting a leakage current of a ground line, and a ground impedance analyzer for detecting the presence or absence of a ground fault, Data obtained from the surge protector, the lightning alarm, the leakage current detector, and the ground impedance analyzer may be transmitted to the surge analyzer through a wired or wireless communication interface.

The surge analysis device outputs information for maintenance and repair of the lightning protection system through a prediction model in which learning is performed based on machine learning, and the prediction model includes the first sensor unit, the second sensor unit, Receive data received from the surge protector, the lightning alarm, the leakage current detector, and the ground impedance analyzer, and the information includes the life of the surge protector, the expected time of lightning occurrence, and the first lightning rod or the second lightning rod. May include reliability information of.

Due to the constraints of manpower and time to check the LPS that are scattered in the building or in various outdoor sites, it is impossible to quickly check the LPS at an appropriate time.Thus, the health, operation data and lightning information of the LPS through real-time monitoring based on IoT You can share.

1 shows a lightning protection system according to an embodiment.
2 shows a surge analysis apparatus according to an embodiment.
3 illustrates an IoT-based lightning protection system for collecting data based on a communication interface, according to an embodiment.
4 illustrates a prediction model for predicting various types of information for lightning protection using data collected in a surge analysis apparatus, according to an embodiment.

In the following, some embodiments will be described clearly and in detail with reference to the accompanying drawings so that those of ordinary skill in the technical field to which the present invention pertains (hereinafter, ordinary technicians) can easily implement the present invention. will be.

In addition, the term "unit" used in the specification may mean a hardware component or circuit such as a Field Programmable Gate Array (FPGA) or an Application Specific Integrated Circuit (ASIC).

1 shows a lightning protection system according to an embodiment.

The lightning protection system 1000 may include a surge analysis device 260, a surge protector (SPD), a sensor unit 500, and a ground terminal box (300, 400, etc.) for grounding each component.

A surge protector (SPD) is a device that prevents damage or failure of electricity, electronic devices, and systems due to the inflow of a surge. When the amount of leakage current of the surge protector SPD increases, the surge protector SPD is damaged due to deterioration. Therefore, the amount of leakage current can be monitored at all times.

The sensor unit 500 installed between the lightning rod and the ground line may sense a current through a sensor and analyze a surge based on the sensed current. The sensor unit 500 may include one or more sensors (eg, a CT sensor (Current Transformer Sensor)) and a lightning analysis device for sensing current.

According to an embodiment, the sensor may measure a lightning coefficient and a lightning current, and detect a time when a lightning strike occurs. The lightning analysis device can analyze data on the size, inflow time, and number of surges using the data detected by the sensor. For example, the lightning analysis device can analyze 8/20 µs guided lightning and 10/350 µs direct strike. The lightning analysis device and sensor can be connected through a wired or wireless communication interface.

According to an embodiment, the sensor unit 500 may include at least two CT sensors, and the lightning analysis device determines the direction of the current based on data (lightning occurrence time) respectively sensed by the at least two CT sensors. By judging, it is possible to determine whether a direct strike or an induction strike has occurred. For example, the sensor unit 500 may include a first CT sensor positioned relatively above the ground and a second CT sensor positioned vertically below the ground than the first CT sensor, and the lightning analysis apparatus includes a first CT sensor. If the current is detected through the second CT sensor within the reference time after the current is detected through the sensor, it is determined as a direct lightning strike, and if the current is detected through the first CT sensor within the reference time after the current is detected through the second CT sensor, it is determined as an induced lightning. can do.

The lightning analysis device may provide the analyzed data to a remote monitoring system (eg, surge analysis device 260) based on a wired/wireless communication interface. The lightning rod and the sensor unit 500 may be located outside the building, and the surge analysis device 260 may be located inside the building, but the present invention is not limited thereto.

Although one sensor unit 500 is illustrated in FIG. 1, the sensor unit 500 of the lightning protection system 1000 may be installed at a plurality of points. For example, the lightning protection system 1000 is installed between the first lightning rod and the ground line, and based on the first CT sensor and the second CT sensor, the first sensor unit 500 and the second lightning rod and ground for sensing an incoming current. A second sensor unit (not shown) installed between the lines and configured to sense an incoming current based on the third CT sensor and the fourth CT sensor may be included. The surge analysis device 260 receives data from a plurality of sensor units (for example, the first sensor unit 500 and the second sensor unit (not shown)) through a wired or wireless communication interface, and receives the received data. Analyzed and integrated information can be provided through the display.

Each of the sensor unit 500 and the surge analysis device 260 may be an IoT device. Accordingly, each of the sensor unit 500 and the surge analysis device 260 has an accessible wired or wireless communication interface, and may be a device that transmits or receives data by communicating with at least one or more other devices through a wired or wireless interface. . The surge analysis device 260 may configure a network to embed an IoT function capable of real-time wired wireless monitoring in a mobile phone. According to an embodiment, a user or a monitor may monitor data generated by the surge analysis apparatus 260 by accessing the surge analysis apparatus 260 through a smartphone.

The surge analysis apparatus 260 may generate and display surge analysis data of the lightning protection system 1000 based on data received from the sensor unit 500 through a wired or wireless communication interface. According to an embodiment, the surge analysis apparatus 260 includes a lightning analysis apparatus 220, a ground terminal box 240 for grounding the surge current flowing into the surge analysis apparatus 260, and a communication unit (not shown). I can.

The lightning analysis apparatus 220 in the surge analysis apparatus 260 may analyze the size of the surge, the inflow time, the number of times, whether an induced or direct lightning strike, etc. based on data received from the sensor unit 500. According to an embodiment, the lightning analysis device 220 may analyze an 8/20 µs guided lightning and a 10/350 µs direct strike. The lightning analysis apparatus 220 in the surge analysis apparatus 260 may be the same as the lightning analysis apparatus of the sensor unit 500.

That is, according to an embodiment, the lightning analysis device is located in the sensor unit 500 to analyze the size of the surge, the inflow time, the number of times, whether an induced or direct strike, etc., based on the data detected by the sensor, and the analysis result. May be transmitted to the surge analysis device 260. Alternatively, according to another embodiment, the data detected by the sensor of the sensor unit 500 is transmitted to the surge analysis device 260, and the lightning analysis device 220 in the surge analysis device 260 is transmitted from the sensor unit 500. Based on the received data, it is also possible to analyze the size of the surge, the inflow time, the number of times, whether an induced or direct strike, etc. The lightning analysis device may be located in at least one of the surge analysis device 260 and the sensor unit 500.

The surge analysis device 260 measures ground current generated at a commercial frequency of 50/60Hz or leakage current information of a surge protector (SPD) using a CT sensor installed on the ground line, and based on the measured information, the grounding system and the The status of the surge protector (SPD) can be monitored in real time.

The communication unit (not shown) may connect to at least one sensor unit 500 based on wired or wireless communication. The communication unit (not shown) may include a communication circuit for using a wired or wireless communication interface. Interfaces accessible by the communication unit (not shown) include a wired local area network (LAN), a wireless local area network such as Wi-fi (Wireless Fidelity), and a wireless local area network (WLAN) such as Bluetooth. Wireless Personal Area Network (WPAN), Wireless Universal Serial Bus (USB), Zigbee, Near Field Communication (NFC), Radio-frequency identification (RFID), Power Line communication (PLC), or 3rd Generation (3G) , 4G (4th Generation), LTE (Long Term Evolution), and the like, a modem communication interface capable of accessing a mobile cellular network. The Bluetooth interface may support Bluetooth Low Energy (BLE).

The surge protector (SPD) and the ground line may be integrally configured so that a lightning analysis device (or a surge analysis device) can be inserted and detached. According to an embodiment, the surge analysis device 260 may be built into the surge protector (SPD), or the surge protector (SPD) may be built into the surge analysis device 260. The surge analysis device 260 may output a visual display device capable of constantly monitoring the function of a surge protector (SPD) device and a fault signal as a contact point.

The surge analysis apparatus 260 may further include a display (not shown) for displaying the data analysis result to the user. The display may include a Liquid Crystal Display (LCD), a Light Emitting Diode (LED), or the like.

The surge analysis device 260 may measure ground continuity. The surge analysis device 260 is measured using a ground continuity tester, and after measuring the voltage generated between points by passing 10A current in general, it can be calculated by substituting it into the R=V/I formula. If the voltage does not occur, the value is close to '0', so it can be said that the continuity is good. When the voltage is generated, the value is generated, so in this case, the continuity is not good and there is a resistance component.

2 shows a surge analysis apparatus according to an embodiment. A surge protector (SPD) may be built into the surge analysis device 2000, and the surge protector (SPD) is detachable.

3 illustrates an IoT-based lightning protection system for collecting data based on a communication interface, according to an embodiment. The lightning protection system 3000 of FIG. 3 may represent an embodiment of the lightning protection system 1000 of FIG. 1.

3, the lightning protection system 3000 includes a surge analysis device 300, a surge protector (SPD), a lightning counter (3200), a lightning alarm (3400), a leakage current detector (3600), and a ground impedance analyzer (3800). It may include. The lightning counter 3200 of FIG. 3 may correspond to the sensor unit of FIG. 1. The surge protector SPD of FIG. 3 may correspond to the surge protector SPD of FIG. 1.

A surge protector (SPD) is a device that prevents damage or failure of electricity, electronic devices, and systems due to the inflow of a surge. When the amount of leakage current of the surge protector SPD increases, the surge protector SPD is damaged due to deterioration. Therefore, the amount of leakage current can be monitored at all times. The surge protector SPD may transmit data (eg, leakage current amount) obtained from the surge protector SPD to the surge analysis apparatus 300 through a wired or wireless communication interface.

The lightning counter 3200 may measure the lightning coefficient in real time and measure the lightning current. In addition, data on the date of occurrence of the lightning can be secured. The lightning counter 3200 may be connected to the lightning analysis device 3220. The lightning analysis apparatus 3220 of FIG. 3 may correspond to the lightning analysis apparatus of FIG. 1. That is, the lightning analysis device 3220 may be located in the lightning counter 3200 or in the surge analysis device 300. As described above with reference to FIG. 1, when the lightning analysis device 3220 is located on the side of the lightning counter 3200, the lightning analysis device 3220 of FIG. 3 is connected to the lightning counter 3200 and analyzed Request data may be transmitted to the surge analysis device 300 through a wired or wireless communication interface.

In this embodiment, the lightning counter 3200 and the lightning analysis device 3220 may be located outside the building, and the surge analysis device 300 may be located inside the building. According to another embodiment, the lightning analysis device 3220 may be incorporated in the surge analysis device 300. In this embodiment, the lightning counter 3200 transmits the lightning coefficient, lightning current, date data, etc. to the surge analysis apparatus 300 through a wired or wireless communication interface, and the lightning analysis apparatus 3220 of the surge analysis apparatus 300 ) Can analyze whether an induction or direct strike occurs based on the received data.

The lightning alarm 3400 can perform functions such as real-time thundercloud monitoring and lightning detection in a radius of 20 km by analyzing the electric field strength. The lightning alarm 3400 may transmit the acquired thundercloud data and lightning data to the surge analysis apparatus 300 through a wired/wireless communication interface.

The leakage current detector 3600 may detect a leakage current of the ground line. The grounding impedance analyzer 3800 may measure the grounding impedance in real time and detect the presence or absence of a grounding error. The leakage current detector 3600 and the ground impedance analyzer 3800 may transmit leakage current data of a ground line and measured ground impedance data to the surge analysis apparatus 300 through wired or wireless communication interfaces, respectively.

The surge analysis device 300 receives data from components scattered in various places of the lightning protection system 3000, and the monitor monitors the integrated data through the surge analysis device 300 to ensure the soundness of the lightning protection system 3000. , Operation data, and lightning information can be analyzed and monitored. The surge analysis apparatus 300 may output various types of information for maintenance and repair of the lightning protection system 3000 through a predictive model in which learning is performed based on machine learning.

4 illustrates a prediction model for predicting various types of information for lightning protection using data collected in a surge analysis apparatus, according to an embodiment.

The prediction model 400 may receive various data values collected by the surge analysis device 300 of FIG. 3 and output various information for maintenance and repair of the lightning protection system 3000.

The data input to the prediction model 400 may include data received from at least one sensor unit (or lightning counter), a surge protector, a lightning alarm, a leakage current detector, and a ground impedance analyzer through a wired or wireless communication interface. I can. For example, data input to the prediction model 400 includes leakage current data received from a leakage current detector, ground impedance data received from a ground impedance analyzer, lightning size and frequency data received from a lightning alarm, and data received from the sensor unit. It may include data on the direction of surge inflow, and the like.

Various information for maintenance and repair of the lightning protection system 3000 output from the predictive model 400 includes the life of the surge protector (SPD), the expected time of lightning occurrence, the reliability of the lightning rod, various information for preventing and preventing lightning damage, and lightning protection. It can contain various information for system maintenance/maintenance. The prediction model 400 may be stored in the memory of the surge analysis apparatus 300 of FIG. 3, but is not limited thereto.

The prediction model 400 is generated by performing machine learning to predict various useful information for maintenance and repair of the lightning protection system 3000 based on input of various data values collected by the surge analysis device 300 of FIG. 3. Can be. Machine learning may refer to an algorithmic technology that classifies/learns features of input data by itself. For example, the predictive model 400 uses data on a number of quantization coefficients to determine any one of a principle component analysis (PCA) technique, a deep network learning technique, and a singular value decomposition (SVD) technique. Learning may be performed using a technique, but is not limited thereto.

The descriptions are intended to provide exemplary configurations and operations for implementing the present invention. The technical idea of the present invention will include not only the embodiments described above, but also implementations that can be obtained by simply changing or modifying the above embodiments. In addition, the technical idea of the present invention will include implementations that can be achieved by easily changing or modifying the embodiments described above in the future.

Claims (8)

A first sensor unit installed between the first lightning rod and the ground line and configured to sense a current based on the first and second CT sensors and to analyze a surge based on the sensed current; And
And a surge analysis device for receiving the analysis result from the first sensor unit through a wired or wireless communication interface,
The first sensor unit includes a lightning analysis device for analyzing the magnitude, inflow direction, inflow time, number of surges, whether induced or direct lightning strikes, based on data sensed by the first CT sensor and the second CT sensor. and,
The first sensor unit is located outside the building,
The surge analysis device is located inside the building,
The surge analysis device,
A communication circuit for the wired or wireless communication interface; And
A lightning protection system comprising a display for displaying the analysis result. The method of claim 1,
The lightning analysis device indicates that a direct lightning strike occurs when a current is detected through the second CT sensor within a reference time after the current is sensed through the first CT sensor, and within a reference time after the current is detected through the second CT sensor. A lightning protection system that determines that an induced lightning has occurred when a current is detected through the first CT sensor. The method of claim 1,
A second sensor unit installed between the second lightning rod and the ground line and configured to sense a current based on the third and fourth CT sensors and to analyze a surge based on the detected current;
Surge protector;
A lightning alarm for detecting a lightning strike by analyzing the electric field strength;
A leakage current detector for detecting a leakage current of the ground line; And
Further comprising a ground impedance analyzer for detecting the presence or absence of a ground fault,
Data obtained from the second sensor unit, the surge protector, the lightning alarm, the leakage current detector, and the ground impedance analyzer are transmitted to the surge analysis device through a wired or wireless communication interface. The method of claim 3,
The surge analysis device outputs information for maintenance and repair of the lightning protection system through a predictive model in which learning is performed based on machine learning,
The prediction model receives data received from the first sensor unit, the second sensor unit, the surge protector, the lightning alarm, the leakage current detector, and the ground impedance analyzer,
The information includes a lifespan of the surge protector, an expected time of occurrence of a lightning strike, and reliability information of the first or second lightning rod. A first sensor unit installed between the first lightning rod and the ground line and configured to sense a current based on the first CT sensor and the second CT sensor;
A second sensor unit installed between the second lightning rod and the ground line and configured to sense a current based on the third CT sensor and the fourth CT sensor; And
Connected based on a wired or wireless communication interface with the first sensor unit or the second sensor unit, and based on data received from the first sensor unit or the second sensor unit, the size, direction of inflow, and inflow of the surge It includes a surge analysis device including a lightning analysis device for analyzing the time, the number of times, whether a guided or direct strike,
The surge analysis device,
A communication circuit for the wired or wireless communication interface; And
A lightning protection system comprising a display for displaying the analysis result. The method of claim 5,
The lightning analysis device indicates that a direct lightning strike occurs when a current is detected through the second CT sensor within a reference time after the current is sensed through the first CT sensor, and within a reference time after the current is detected through the second CT sensor. A lightning protection system that determines that an induced lightning has occurred when a current is detected through the first CT sensor. The method of claim 5,
Surge protector;
A lightning alarm for detecting a lightning strike by analyzing the electric field strength;
A leakage current detector for detecting a leakage current of the ground line; And
Further comprising a ground impedance analyzer for detecting the presence or absence of a ground fault,
A lightning protection system that transmits data obtained from the surge protector, the lightning alarm, the leakage current detector, and the ground impedance analyzer to the surge analysis device through a wired or wireless communication interface. The method of claim 7,
The surge analysis device outputs information for maintenance and repair of the lightning protection system through a predictive model in which learning is performed based on machine learning,
The prediction model receives data received from the first sensor unit, the second sensor unit, the surge protector, the lightning alarm, the leakage current detector, and the ground impedance analyzer,
The information includes a lifespan of the surge protector, an expected time of occurrence of a lightning strike, and reliability information of the first or second lightning rod.

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