KR200432468Y1 - Apparatus for detecting remotely fail of arrester - Google Patents

Abstract

The present invention is a device for remotely detecting the failure of the lightning arrester installed in order to prevent the ground fault and damage of the distribution equipment when there is a lightning strike in the overhead line and the distributor installed in the transmission and distribution line. The measurement device is connected to the current measurement analyzer to continuously measure and analyze, and if there is a current higher than the rated leakage current allowed by the arrester or if the flow of current is not detected due to a short circuit, the analyzer detects a failure and wirelessly detects the arrester of each distribution line. It is a device to send a signal to the sensing device installed in the lower part, and also to send a signal to the receiver owned by the inspector and the facility operator to enable replacement immediately.

Lightning arrester, lightning arrester for protecting transmission and distribution system, polymer arrester, insulator arrester

Description

Lightning arrester failure remote wireless detection device {APPARATUS FOR DETECTING REMOTELY FAIL OF ARRESTER}

1 is a view showing a telegraph pole structure for explaining a conventional transmission and distribution structure,

2 exemplarily shows a conventional polymer arrester;

3 is a diagram illustrating a polymer arrester installed with an arrester failure wireless detection device according to an embodiment of the present invention,

4 is a diagram illustrating a failure detection block diagram of the wireless failure detection apparatus attached to the arrester.

<Explanation of symbols for main parts of the drawings>

50: lightning arrester analysis module 55: analysis IC

60: wireless signal generator 70: wireless signal receiver

100: arrester failure wireless detection device

The present invention is a device for remotely detecting the failure of the lightning arrester installed in order to prevent the ground fault and damage of the distribution equipment in case of lightning strikes in the overhead line and the distribution equipment installed in the transmission and distribution line. Is connected to the current measurement analyzer, and it is always measured and analyzed.If a current higher than the rated leakage current allowed by the arrester or a current flow is not detected due to a short circuit, the analyzer determines that it is a failure and wirelessly connects to the lower part of the arrester of each distribution line. It is a device to send a signal to the installed sensing device and also to send a signal to the receiver owned by the inspector and the facility operator to enable replacement immediately.

1 is a view showing a telephone pole structure for explaining the structure of a conventional transmission line, Figure 2 is a view for explaining the transmission and distribution concept in more detail in the telephone pole structure shown in FIG.

In FIG. 1 and FIG. 2, normally, the telephone pole 4 is provided with the processing branch line 1, the transmission-distribution line 3, the ground line 5, the lightning arrester 6, etc. In FIG.

The overhead processing line 1 is a metal wire attached to the upper part of the conductor to protect the transmission line 3 supported by the telephone pole 4 from direct lightning, and serves as a lightning rod or lightning arrester. Perform. When lightning strikes, the lightning current is connected to the processing ground support (2) made of metal from the processing ground (1), the ground wire (5) installed outside the telephone pole, and the ground rod embedded in the ground ( 7) guided to the earth through. Processing line support (2) is generally made of a metal material is to be installed on the upper end of the telephone pole (4), is electrically connected to the processing line (1), the lower end of the support (2), the ground line (5) Is connected.

The high voltage of 22.9 KV is normally transmitted to the transmission and distribution line 3, and the ground line and the distribution line are branched from the transmission and distribution line 3. The ground wire is electrically connected to the arrester 6, and the rough ground wire of the arrester is electrically connected to the ground rod of the basement and grounded.

As shown in detail in FIG. 2, the lightning arrester 6 is generally used for the insulator type or polymer type arrester 6, and is installed to prevent damage to the line ground and the distributor in the event of lightning strikes. do.

The lightning arrester 6 is a device for passing the available transient voltage (surge voltage) generated during lightning invasion and filtering the abnormal transient voltage to the ground to induce ground discharge. Therefore, MOV (Metal Oxide Varister: 15) is used to return instantaneous transient voltage to earth in a very short time. Here, the MOV allows the current to flow when a voltage of a predetermined voltage or more is applied using the asymmetry effect of the voltage current to return to the ground.

In this process, the line and the ground should be insulated at normal times, but due to the characteristics of the MOV device, a small leakage current flows even in normal cases, and if there is an abnormality in the MOV device, an excessive current flows, causing a short circuit between the line and the ground. .

Currently, the inspector artificially checks the leakage current by measuring the leakage current by using a current detector while climbing on a power pole with a leakage current measuring instrument or by getting on a vehicle equipped with an aerial platform.

Therefore, it is extremely difficult to know when the arrester at which position is broken in the situation where the telephone poles are installed at 50 to 100 M intervals, and according to the method described above, the cost of detecting the arrester is considerably high. It is clear that it takes a lot. In addition, the arrester can not be determined by the naked eye, and the installation position is installed on the overhead line, it is possible to determine the failure only by using a direct measuring instrument. If lightning strikes in a state where the lightning arrester is broken, it may cause not only power distribution equipment but also human accidents due to electric shock near power poles. It can extend the life and supply the stable power to the customer.

Therefore, there has been an absolute demand for a device capable of remotely detecting whether the arrester has failed.

The purpose of the wireless fault detection apparatus of the arrester according to the embodiment of the present invention made in view of the above-described problems is to determine the failure when the arrester is out of the range of the allowable leakage current by analyzing the range of the allowed leakage current of the arrester It is an object of the present invention to provide a wireless detection device capable of remotely detecting whether a lightning arrester has failed by generating a failure signal wirelessly.

Another object of the apparatus for detecting a wireless failure of an arrester according to the embodiment of the present invention, which is made in view of the above-described problems, is to provide an RFID chip at the time of manufacture of the arrester, and to produce, distribute, and install the arrester by the RFIF chip. By comprehensively managing the inspection date and time, it is possible to remotely determine whether the arrester is broken and to reduce maintenance costs.

Another object of the wireless fault detection apparatus for an arrester according to the embodiment of the present invention, which is made in view of the above-described problems, further includes an RFID chip at the time of manufacture of the arrester and the production, distribution, By comprehensively managing installation, inspection date and time, it is possible to remotely determine whether the arrester has failed and to reduce maintenance costs.

Device for remotely detecting whether the arrester according to an embodiment of the present invention by using a wireless signal,

Analysis module 50 for measuring the leakage current of the arrester to determine whether the leakage current is within the allowable range,

Faulty wireless signal generator 60 made wireless when the amount of leakage current is outside the allowable range, and

It consists of a portable wireless fault signal receiver 70 for receiving a fault signal generated from the faulty radio signal generator and displaying it to the examiner.

Preferably, in the embodiment of the present invention, the faulty radio signal generator used in the arrester fault wireless remote sensing device is preferably made of RFID.

(Example)

Hereinafter, a failure detection apparatus 100 of a lightning arrester according to an embodiment of the present invention will be described in detail with reference to FIGS. 3 to 4.

  3 is a diagram illustrating a polymer arrester installed with a lightning arrestor failure detection device according to an embodiment of the present invention, Figure 4 is a diagram showing a failure detection block diagram of a wireless failure detection device attached to the arrester.

3 and 4, the arrester failure wireless detection device 100 measures the leakage current of the arrester 6 and the arrester to determine whether the leakage current amount is within the allowable range, and the leakage current amount is in the allowable range. In other cases, it consists of a faulty wireless signal generator 60 made of a wireless, a portable radio fault signal receiver 70 for receiving a fault signal generated from the faulty wireless signal generator and displaying it to the examiner.

The lightning arrester 6 is generally installed in a telephone pole to protect additional equipment such as transmission lines and transformers. The lightning arrester 6 passes an instantaneous transient voltage (surge voltage) generated during a lightning invasion and passes only an available transient voltage. It is a device that performs ground discharge by filtering and inducing to ground. Therefore, the arrester 6 includes a MOV (Metal Oxide Varister) 15 at the center of the center of the arrester in order to return the instantaneous transient voltage to the earth in a very short time. It is sealed and formed. Here, the MOV 16 performs a function of returning to the ground by allowing a current to flow when a voltage of a predetermined voltage or more is applied by using the asymmetry effect of the voltage current.

The lightning arrester 6 currently used mainly uses an insulator type and a polymer type arrester. However, when the lightning strike does not invade as mentioned above, the lightning arrester 6 should be insulated between the transmission line and the ground. However, a slight leakage current flows even under normal conditions due to the characteristics of the MOV 6 element, and an excessive current flows when the MOV 6 element is abnormal, resulting in a short circuit between the line and the ground.

In the arrester 6, the normal leakage current is 0.05 to 0.5 mA. However, as an error, the allowable leakage current in the steady state is about 0.15 to 1 mA. Therefore, a leakage current of 0.15 mA or less is defined as a disconnection as an under leakage current, and at this time, the function as an arrester, i.e., a transient transient voltage cannot be induced to the ground during a lightning invasion, and is determined to be a failure.

 In addition, when a leakage current of 07 or more or 1 mA or more flows through the arrester 6, it is defined as an excessive leakage current and is determined to be a failure. Therefore, it is important for the arrester 6 to determine whether leakage current outside the range of the allowable leakage current is generated, that is, whether the leakage current is excessive or excessive.

The analysis module 50, which measures the leakage current of the arrester and determines whether the leakage current amount is within the allowable range, is composed of an analysis IC, and the analysis IC constantly checks a typical allowable leakage current amount of the arrester and is within the range of 0.15 to 1 mA. Indicates normal, and leakage currents outside this allowable leakage current amount range, that is, leakage currents of 0.15 mA or less or 1 mA or more, are determined to be abnormal or faulty.

If the arrester is determined to be faulty by the analysis IC, a fault signal is output. That is, the failure signal of the arrester output from the analysis IC which always analyzes the normal leakage current and the allowable error leakage current amount is input to the wireless failure signal generator 60. The wireless failure signal generator 60 input from the analysis IC wirelessly generates a signal that the arrester 6 has failed wirelessly.

In general, the wireless fault signal generator 60 may use an RF signal generator, RFID, and the like, and RFID is classified into a passive type and an active type. In the case of the passive type, the communication distance is generally about 20 m. It is preferable to use a passive type of lightning arrester, and it is preferable to use an active RFID capable of adjusting a communication distance to a telephone pole installed in a place where access to a mountainous terrain is difficult.

In addition, since the RFID used as the wireless failure signal generator 60 may include product history information such as a production date, an installation date, an inspection date, and the like of the product, it is determined that the RFID is very suitable for checking the failure of the arrester.

The wireless failure signal generated from the wireless failure signal generator 60 may be remotely sensed by the portable wireless failure signal receiver 70. Therefore, the inspector can check and check whether the arrester installed on the telephone pole under the telephone pole in which the arrester is installed while carrying the portable wireless failure signal receiver 70. If the arrester is found to be faulty, climb the telephone pole and replace the arrester.

In the case of using the arrester wireless failure detecting apparatus 100 according to the embodiment of the present invention, it is possible to remotely check whether the arrester is attached to the transmission line of the telephone pole, so that the inspection of the conventional arrester can be easily performed. Can be. Therefore, it can be seen that there is an excellent effect in that the maintenance cost of the arrester is significantly reduced, and that replacement can be performed immediately after a failure.

The purpose of the wireless fault detection device of the arrester according to the embodiment of the present invention is to analyze the range of the allowable leakage current of the arrester in the arrester, if it is out of the allowable leakage current range is determined as a failure to generate a fault signal wirelessly, To provide a wireless detection device that can remotely detect whether or not the failure.

Another object of the apparatus for detecting a wireless failure of an arrester according to the embodiment of the present invention, which is made in view of the above-described problems, is to provide an RFID chip at the time of manufacture of the arrester, and to produce, distribute, and install the arrester by the RFIF chip. By comprehensively managing the inspection date and time, it is possible to remotely determine whether the arrester is broken and to reduce maintenance costs.

 Another object of the wireless fault detection apparatus for an arrester according to the embodiment of the present invention, which is made in view of the above-described problems, further includes an RFID chip at the time of manufacture of the arrester and the production, distribution, By comprehensively managing installation, inspection date and time, it is possible to remotely determine whether the arrester has failed and to reduce maintenance costs.

In the above description of embodiments of the present invention, the failure signal generator has been described as an example of RFID, but it should be appreciated that the present invention is not limited thereto. For example, it may be appreciated that wired signal generators for use in RF, wireless signal generators, power line communication lines may be used, or may be modified or altered to allow other types of wireless signal generators to be installed, and such changes or modifications may be made. It should be construed as being included within the appended claims of the present invention.

Claims (2)

In the device for remotely detecting whether the arrester by using a radio signal, Analysis module 50 for measuring the leakage current of the arrester to determine whether the leakage current is within the allowable range, Faulty wireless signal generator 60 made wireless when the amount of leakage current is outside the allowable range, and A portable wireless fault signal receiver 70 for receiving a fault signal generated from the faulty radio signal generator and displaying the fault signal to an inspector Lightning arrester failure wireless detection device, characterized in that consisting of. 2. The arrester wireless sensing device according to claim 1, wherein the faulty radio signal generator is made of RFID.

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