Airfield light lightning and surge detection system

Abstract

An airfield light lightning and surge detection system according to the present invention comprises: a plurality of airfield lights; a plurality of airfield light communication terminals for controlling the plurality of airfield lights, respectively; a plurality of transformers provided in the plurality of airfield light communication terminals, respectively; a constant current regulator that supplies current to the transformers; a local control unit for controlling the plurality of airfield light communication terminals; a central server; and control units (microcomputers) provided in the airfield light communication terminals, wherein the control units detect the occurrence of surge at ground portions of high-voltage lines connecting the plurality of transformers. Accordingly, each of the control units (microcomputers), when an abnormal waveform is detected through comparison with a normal waveform of voltage frequency, may determine a surge occurrence in a corresponding high-voltage line and detect a surge occurrence portion of the high-voltage line.

Description

Aviation lightning and surge detection system

[0001] The present invention relates to an aviation light lightning and surge occurrence detection system, and more particularly, to an aviation light lightning and surge occurrence detection system that detects damage to an aviation light and surge occurrence due to lightning.

[0002] In general, an aviation lighting control and monitoring system is a system that safely guides the takeoff and landing of aircraft at an airport. It controls the turning on / off of aviation lighting individually according to brightness levels using power line communication, and detects the turning on / off status and failure status of aviation lighting.

[0003] Halogen lamps were traditionally used for these aviation lights, but they are now being replaced by light-emitting diodes (LEDs). Consequently, a control and monitoring system for both the existing halogen lamps and LED aviation lights has become necessary.

[0004] Figure 1 is a configuration diagram of a conventional aviation lighting control and monitoring system.

[0005] As shown in the drawing, the conventional aviation lighting control and monitoring system (1) is composed of a constant current regulator (40), an insulating transformer (30), an individual controller (20), aviation lighting (10), a local control unit (50), and a central control unit (60).

[0006] The central control unit (60), which is an upper server such as a control tower, turns on / off the aviation lights (10) connected to the circuit of the constant current regulator (40) through the local control unit (50) using power line (A) communication and monitors the status of the aviation lights (10).

[0007] The electricity that powers these aviation lights is connected in a series loop-type circuit by high-voltage cables connecting the lights. These cables are installed buried in the airport's underground airfield conduits.

[0008] Aviation lights are installed in underground pipes, as shown in Figures 2 and 3. These underground pipes are usually always submerged in water or filled with mud. This can cause leakage currents in high-voltage lines.

[0009] That is, the covering of high-voltage lines hardens and cracks over time, allowing current to flow through the gaps, causing grounding and surges with water and mud as a medium, which gradually causes multiple sparks to occur on the high-voltage lines, ultimately resulting in a short-circuit accident.

[0010] However, conventional aviation lighting control and monitoring systems cannot detect surges in high-voltage lines.

[0011] In particular, high-voltage lines are grounded by stripping the primary covering and then connecting the ground wire to the aluminum shielding.

[0012] Accordingly, high-voltage lines submerged in water in underground pipelines generate surges or continuous leakage currents at the grounding point, but conventional systems have had difficulty finding the point where surges or continuous leakage currents occur.

[0013] In particular, the leakage current occurring at the high-voltage line grounding point was difficult to find because it was a small change rather than a surge that caused a sudden change.

[0014] These leakage currents cause problems in power line communications through high-voltage lines.

[0015] Additionally, conventional aviation lighting control and monitoring systems had difficulty detecting lightning strikes to aviation lights.

[0016] [Prior Art Literature]

[0017] [Patent Document]

[0018] (Patent Document 1) Republic of Korea Patent Publication No. 10-2014-0085937 (July 9, 2014)

[0019] The present invention has been devised to solve the above-mentioned problems of the prior art, and the purpose of the present invention is to provide an aviation lightning and surge detection system capable of detecting a location where a surge or leakage current occurs in a high-voltage line.

[0020] In addition, another object of the present invention is to provide an aviation light lightning and surge occurrence detection system that detects lightning striking an aviation light.

[0021]

[0022] The technical problems of the present invention are not limited to the technical problems mentioned above, and other technical problems not mentioned will be clearly understood by those skilled in the art to which the present invention pertains from the description below.

[0023] In order to achieve the above-described purpose, the aviation light lightning and surge occurrence detection system of the present invention comprises: a plurality of aviation lights; a plurality of aviation light communication terminals for controlling each of the plurality of aviation lights; a plurality of transformers respectively provided in the plurality of aviation light communication terminals; a constant current regulator for supplying current to the transformers; a local control unit for controlling the plurality of aviation light communication terminals; a central server; and a control unit (microcomputer) provided in the aviation light communication terminal; wherein the control unit is characterized in that it detects the occurrence of leakage current in the grounding portion of a high-voltage line connecting each of the plurality of transformers.

[0024] In addition, it is characterized by detecting the voltage and voltage frequency of the high-voltage line connecting each of the plurality of transformers through the control unit.

[0025] In addition, the control unit is characterized in that it determines that a leakage current has occurred if the normal waveform voltage frequency of the high-voltage line and the detected voltage frequency are different.

[0026] In addition, the control unit is characterized in that it determines that lightning has struck the aircraft light if the measured voltage of the aircraft light is different from the standard operating voltage.

[0027] In addition, it is characterized by determining that lightning has struck the aircraft light if the measured voltage of the aircraft light is 50% or more higher than the standard operating voltage.

[0028] According to the aviation lightning and surge occurrence detection system according to the present invention, the control unit (microcomputer) detects an abnormal waveform by comparing it with a normal voltage frequency waveform, determines that a surge or leakage current has occurred in a high-voltage line, and can detect the location where a surge or leakage current has occurred in the high-voltage line.

[0029] Accordingly, in particular, high-voltage lines are grounded to the aluminum shielding after stripping the primary covering, and these high-voltage lines are submerged in water, so continuous leakage current occurs at the grounding portion, and in the present invention, the portion where leakage current occurs is detected through a voltage frequency abnormal waveform.

[0030] In other words, power line communication failures can be prevented in advance because the location of leakage current generation can be identified and maintenance can be performed.

[0031] In addition, the control unit can input the reference operating voltage, measure a voltage higher than the reference voltage, and determine that lightning has struck the aircraft, thereby detecting the location of the lightning strike.

[0032]

[0033] The effects according to the technical idea of ​​the present disclosure are not limited to the effects mentioned above, and other effects not mentioned will be clearly understood by those skilled in the art from the description below.

[0034] Figure 1 is a configuration diagram of a conventional halogen aviation lighting control and monitoring system.

[0035] Figures 2 and 3 are drawings showing a conduit in which conventional aviation lights are installed.

[0036] Figure 4 is a configuration diagram of an aviation lightning and surge occurrence detection system according to the present invention.

[0037] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the attached drawings. The advantages and features of the present invention, and methods for achieving them, will become clearer with reference to the embodiments described in detail below together with the attached drawings. However, the present invention is not limited to the embodiments disclosed below, but can be implemented in various different forms. These embodiments are provided only to ensure that the disclosure of the present invention is complete and to fully inform those skilled in the art of the scope of the invention, and the present invention is defined only by the scope of the claims. Like reference numerals designate like elements throughout the specification.

[0038] Unless otherwise defined, all terms (including technical and scientific terms) used herein may be used in their common sense to those of ordinary skill in the art to which the present invention pertains. Furthermore, terms defined in commonly used dictionaries are not to be interpreted ideally or excessively unless explicitly and specifically defined otherwise.

[0039] Additionally, the singular in this specification may also include the plural unless specifically stated otherwise in the text. As used herein, the terms "comprises" and / or "comprising" do not exclude the presence or addition of one or more other components, steps, operations, and / or elements.

[0040]

[0041] Figure 4 is a configuration diagram of an aviation lightning and surge occurrence detection system according to the present invention.

[0042]

[0043] *As shown in FIG. 4, the aviation light lightning and surge occurrence detection system (S) according to the present invention comprises a plurality of aviation lights (100a, 100b, …, 100n), a plurality of aviation light communication terminals (IRU: ILCMS Remote Unit) (200a, 200b, …, 200n) positioned corresponding to each of the plurality of aviation lights (100a, 100b, …, 100n) to control each of the plurality of aviation lights (100a, 100b, …, 100n), a plurality of transformers (TR) (300a, 300b, …, 300n) connected to the plurality of aviation light communication terminals (IRU: ILCMS Remote Unit) (200a, 200b, …, 200n), a constant current regulator (400), a local control unit (LCU: Local Control Unit) (500), and a central It consists of a server (600).

[0044] A constant current regulator (400) supplies current corresponding to the brightness level of each of a plurality of aviation lights (100a, 100b, …, 100n) to each of a plurality of aviation light communication terminals (200a, 200b, …, 200n) through a plurality of transformers (300a, 300b, …, 300n) corresponding to each of a plurality of aviation lights (100a, 100b, …, 100n), and each of the plurality of aviation light communication terminals (200a, 200b, …, 200n) turns on or off each of the plurality of aviation lights (100a, 100b, …, 100n) to a brightness level corresponding to the brightness level according to the current corresponding to the brightness level supplied from the constant current regulator (400).

[0045] In addition, each of the aviation lighting communication terminals (200a, 200b, …, 200n) is equipped with a control unit (700a, 700b, …, 700n; microcomputer), and the control unit (700a, 700b, …, 700n) detects the occurrence of a surge at the high-voltage line grounding portion connecting each of the plurality of transformers.

[0046] These high-voltage lines are grounded by stripping the primary insulation and then connecting the aluminum shielding to the ground wire. Consequently, submerged high-voltage lines in underground pipelines can experience surges or sustained leakage currents at the grounded portion and the high-voltage lines.

[0047] Also, lightning can strike aircraft and cause damage.

[0048] That is, a means was needed to detect surge or leakage current in high-voltage lines such as aviation lights and lightning strikes.

[0049] To this end, the voltage and voltage frequency of the high-voltage line connecting each of the plurality of transformers are configured to be detected through the control unit (700a, 700b, …, 700n).

[0050] Specifically, if the normal waveform voltage frequency (50-60 Hz) of the high-voltage line and the detected voltage frequency (noise) are different, it is determined that a surge or leakage current has occurred.

[0051] That is, one of the control units (700a, 700b, …, 700n) provided in each of the aviation lighting communication terminals (200a, 200b, …, 200n) installed to control the aviation lighting (100a, 100b, …, 100n) measures the high-voltage line voltage frequency, and when an abnormal waveform voltage frequency is measured, it is determined that a surge has occurred in the high-voltage line at the input side of the aviation lighting communication terminal (200a, 200b, …, 200n). Here, in the case of a surge, the frequency of the abnormal waveform is such that the power or voltage increases rapidly, and the leakage current generates an abnormal waveform in which a noise component is superimposed without a rapid waveform change.

[0052] For example, if the control unit (700b) equipped in the aviation lighting communication terminal (200b) No. 2 measures the high-voltage line voltage frequency and measures an abnormal waveform voltage frequency that is different from the normal waveform voltage frequency (50 to 60 Hz), it is determined that a surge or leakage current has occurred in the high-voltage line connecting the aviation lighting communication terminal (200a) No. 1 and the aviation lighting communication terminal (200b) No. 2. In other words, it determines that a surge has occurred in the high-voltage line connected to the input side of the aviation lighting communication terminal.

[0053] At this time, the control unit (700a, 700b, …, 700n) transmits to the local control unit (500) and the central server (600) that an abnormal waveform voltage frequency different from the normal waveform voltage frequency (50 to 60 Hz) has occurred.

[0054] That is, when an abnormal waveform voltage frequency different from the normal waveform voltage frequency (50 to 60 Hz) occurs in the control unit (700b) of the aviation light communication terminal installed in aviation light No. 2, it can be known that a surge or leakage current has occurred in the high-voltage line connecting aviation light No. 1 (100a) and aviation light No. 2 (100b), and the location of the aviation light where the surge occurred can also be known in real time from the local control unit (500) and the central server (600).

[0055] At this time, if the difference between the voltage frequency of the normal waveform voltage (50~60Hz) and the voltage frequency of the abnormal waveform in the control unit (700a, 700b, …, 700n) exceeds ±10%, it is determined that a surge or leakage current has occurred in the high-voltage line.

[0056] On the other hand, if the difference between the voltage frequency of the normal waveform (50~60Hz) and the voltage frequency of the abnormal waveform in the control unit (700a, 700b, …, 700n) does not exceed ±5%, it is determined that a surge or leakage current is not occurring in the high-voltage line.

[0057] However, the local control unit (500) and the central server (600) generate a maintenance notification when the voltage frequency of an abnormal waveform occurs three or more times even if it is not determined to be a surge or leakage current of a high-voltage line.

[0058] That is, when an abnormal waveform occurs, the local control unit (500) and the central server (600) sound a short-circuit risk signal to notify the user to perform preventive maintenance in advance.

[0059] Furthermore, the local control unit (500) and the central server (600) also perform an operation of comparing and judging the difference in voltage frequency between the normal voltage frequency waveform (50 to 60 Hz) and the measured abnormal waveform and the difference in voltage frequency between the normal voltage frequency waveform (50 to 60 Hz) and the measured abnormal waveform. If the difference exceeds the reference value, it is judged as a surge or leakage current.

[0060] For example, if the reference value is 10, the abnormal waveform voltage frequency of the first aviation lighting communication terminal (200a) is 55, and the abnormal waveform frequency of the second aviation lighting communication terminal (200b) is 70, the difference between the two is 15, which exceeds the reference value 10, and is therefore determined to be a surge of a high-voltage line.

[0061] However, the local control unit (500) and the central server (600) generate a maintenance notification if the fluctuation value does not exceed the reference value but the fluctuation value occurs three or more times.

[0062] That is, when a certain amount of current value changes, the local control unit (500) and the central server (600) sound a short-circuit risk signal to notify the user so that preventive maintenance can be performed in advance.

[0063] In addition, the control unit (700a, 700b, …, 700n) determines that lightning has struck the aircraft light if the measured voltage of the aircraft light is different from the standard operating voltage.

[0064] At this time, if the measured voltage of the aviation light is 50% higher than the standard operating voltage, it is determined that lightning has struck the aviation light.

[0065] According to the present invention, the control unit (700a, 700b, …, 700n) detects an abnormal waveform by comparing it with a normal voltage frequency waveform and determines that a surge or leakage current has occurred in the high-voltage line, thereby detecting the location where a surge or leakage current has occurred in the high-voltage line.

[0066] Accordingly, in particular, high-voltage lines are grounded to the aluminum shielding after stripping the primary covering, and these high-voltage lines are submerged in water, so continuous leakage current occurs at the grounding portion, and in the present invention, the portion where leakage current occurs is detected through a voltage frequency abnormal waveform.

[0067] In other words, power line communication failures can be prevented in advance because the location of leakage current generation can be identified and maintenance can be performed.

[0068] In addition, the control unit (700a, 700b, …, 700n) inputs the operating voltage and, if an abnormal voltage is measured compared to the reference voltage, determines that lightning has struck the aircraft, it can detect the lightning occurrence area.

[0069]

[0070] While preferred embodiments of the present invention have been described in detail, the technical scope of the present invention is not limited to the aforementioned embodiments and should be interpreted in accordance with the scope of the patent claims. Those skilled in the art should recognize that numerous modifications and variations are possible without departing from the scope of the present invention.

[0071]

[0072] [Explanation of symbols]

[0073] S - Aviation Lightning and Surge Detection System

[0074] 100 - Aviation lights 200 - Aviation lights communication terminal

[0075] 300 - Transformer 400 - Constant current regulator

[0076] 500 - Local Control Unit 600 - Central Server

Claims

1. A plurality of aviation lights; A plurality of aviation light communication terminals for controlling each of the plurality of aviation lights; A plurality of transformers each equipped in the plurality of aviation lighting communication terminals; A constant current regulator supplying current to the above transformer; A local control unit for controlling the plurality of aviation lighting communication terminals; central server; and It consists of a control unit (microcomputer) equipped in the above aviation lighting communication terminal; An aviation lightning and surge occurrence detection system, characterized in that the control unit detects the occurrence of leakage current in the grounding section of a high-voltage line connecting each of the plurality of transformers.

2. In paragraph 1, An aviation lightning and surge occurrence detection system characterized by detecting the voltage and voltage frequency of a high-voltage line connecting each of a plurality of transformers through the above control unit.

3. In paragraph 2, The above control unit An aviation lightning and surge occurrence detection system characterized in that it is determined that a leakage current has occurred if the normal waveform voltage frequency of the high-voltage line and the detected voltage frequency are different.

4. In paragraph 3, The above control unit, An aviation light lightning and surge occurrence detection system characterized by determining that lightning has struck the aviation light when the measured voltage of the aviation light differs from the standard operating voltage.

5. In paragraph 3, An aviation light lightning and surge occurrence detection system characterized by determining that lightning has struck the aviation light when the aviation light measured voltage is 50% or more higher than the standard operating voltage.

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