JP4374598B2 - Feeding cable monitoring device - Google Patents
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- JP4374598B2 JP4374598B2 JP2004179323A JP2004179323A JP4374598B2 JP 4374598 B2 JP4374598 B2 JP 4374598B2 JP 2004179323 A JP2004179323 A JP 2004179323A JP 2004179323 A JP2004179323 A JP 2004179323A JP 4374598 B2 JP4374598 B2 JP 4374598B2
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この発明は、き電ケーブル監視装置に関するもので、詳しくは、鉄道車両に電流を供給するき電ケーブルの絶縁被覆の劣化を検出することが可能なき電ケーブル監視装置に関するものである。 The present invention relates to a feeder cable monitoring device, and more particularly to a feeder cable monitoring device capable of detecting deterioration of an insulation coating of a feeder cable that supplies current to a railway vehicle.
鉄道車両に直流電流を供給する直流き電線は、トンネル内、陸橋の下、地中等で裸線のき電線を配設することは不可能であり、そのため当該箇所ではき電線を絶縁被覆したき電ケーブルが配設されている。 A DC feeder that supplies a DC current to a railway vehicle cannot be provided with a bare feeder in a tunnel, under a bridge, or in the ground. An electric cable is provided.
上記のき電ケーブルは、設置状況によっては経年的に絶縁被覆に劣化が進行し、絶縁被覆が劣化して高抵抗地絡が発生する可能性が高い。高抵抗地絡とは、接地抵抗が大きい地絡のことであり、流れる電流も負荷電流以下であるため、変電所では検知できない。絶縁被覆の劣化は発見されないままさらに進行し、大幅に被覆が破壊されると地絡が発生し、鉄道車両の運行停止を招くと共に、き電ケーブルの焼損や電気設備の損傷等の重大事故につながり、復旧に多大な労力とコストを要する。従って、き電ケーブルの地絡を防止するために、絶縁被覆の点検が必要であり、従来は、巡回等によるき電ケーブルの目視点検がなされてきた。 Depending on the installation situation, the above-described feeder cable is likely to deteriorate over time with the insulation coating, and the insulation coating is likely to deteriorate, resulting in a high resistance ground fault. A high-resistance ground fault is a ground fault with a large ground resistance, and since the flowing current is equal to or less than the load current, it cannot be detected at a substation. The deterioration of the insulation coating proceeds further without being discovered, and if the coating is severely destroyed, a ground fault will occur, causing the railway vehicle to stop operating and causing serious accidents such as burnout of feeder cables and damage to electrical equipment. It takes a lot of effort and cost to connect and recover. Therefore, in order to prevent a ground fault of the feeder cable, it is necessary to inspect the insulation coating. Conventionally, the feeder cable has been visually inspected by patrol or the like.
ところで、上記従来の目視によるき電ケーブルの点検では、絶縁被覆の劣化状態が十分把握できないという問題があった。また、巡回による定期的、又は不定期的な点検では、き電ケーブルを常には監視することができず、絶縁被覆の劣化に対する即時の対応処置が取れないという問題もあった。 By the way, the conventional visual inspection of the feeding cable has a problem that the deterioration state of the insulation coating cannot be grasped sufficiently. Further, in periodic or irregular inspections by patrol, there is also a problem that the feeding cable cannot always be monitored, and an immediate countermeasure for the deterioration of the insulation coating cannot be taken.
この発明は、上記従来の問題点を解決するためになされたもので、その目的は、き電ケーブルの絶縁被覆を継続的に監視し、その劣化を容易かつ確実に検出することが可能なき電ケーブル監視装置を提供することにある。また、き電ケーブルの異常を管理者に知らせることが可能であり、管理者が直ちにき電ケーブルの地絡防止措置を施すことができるき電ケーブル監視装置を提供することもこの発明の目的である。 The present invention has been made to solve the above-described conventional problems, and its purpose is to continuously monitor the insulation coating of the feeder cable and detect the deterioration easily and reliably. It is to provide a cable monitoring device. It is also an object of the present invention to provide a feeder cable monitoring device capable of notifying an administrator of an abnormality of a feeder cable and allowing the administrator to immediately take measures to prevent a ground fault of the feeder cable. is there.
そこで、請求項１のき電ケーブル監視装置は、き電線２を絶縁被覆３で覆ったき電ケーブル１の周囲に配設される導体部４と、この導体部４に接続されると共に導体部４の電圧がしきい値を超えた場合に信号を出力する劣化検出器１２と、この劣化検出器１２の出力信号が供給され、上記き電ケーブル１の異常についての情報を出力する信号出力部１３とを具備し、上記き電ケーブル１を、絶縁性の保持手段４２で保持、固定し、絶縁被覆３と保持手段４２との間に、導体部４としての薄状の導電体を絶縁被覆３周囲に巻回して配設し、保持手段４２で挟み込んだことを特徴とする。
Accordingly, the feeder cable monitoring device according to the first aspect of the present invention includes a conductor portion 4 disposed around the feeder cable 1 in which the feeder wire 2 is covered with an insulating coating 3, and the conductor portion 4 connected to the conductor portion 4. A deterioration detector 12 that outputs a signal when the voltage exceeds a threshold value, and an output signal of the deterioration detector 12 that is supplied with a signal output unit 13 that outputs information about abnormality of the feeder cable 1. The feeder cable 1 is held and fixed by the insulating holding means 42, and a thin conductor as the conductor portion 4 is interposed between the insulating coating 3 and the holding means 42. It is characterized by being wound around and sandwiched between holding means 42 .
上記請求項１のき電ケーブル監視装置によれば、き電ケーブル１の周囲に導体部４を設けたことにより、き電ケーブル１に劣化が生じると、き電線２からの漏れ電流が、導体部４を介して劣化検出器１２によって検出される。また、き電ケーブル１の絶縁被覆３に劣化が生じると、き電線２からの漏れ電流が、導体部４を介して劣化検出器１２によって検出される。従って、請求項１のき電ケーブル監視装置は、き電ケーブル１が静電シールドを備えておらず、さらに導電性の保持手段を備えていない場合においても、絶縁被覆３の劣化を検出することができる。
According to the feeder cable monitoring device of the first aspect, when the conductor portion 4 is provided around the feeder cable 1 and the feeder cable 1 is deteriorated, the leakage current from the feeder wire 2 is It is detected by the deterioration detector 12 via the unit 4. Further, when the insulation coating 3 of the feeder cable 1 is deteriorated, a leakage current from the feeder line 2 is detected by the deterioration detector 12 through the conductor portion 4. Therefore, the feeder cable monitoring device according to claim 1 detects the deterioration of the insulation coating 3 even when the feeder cable 1 is not provided with an electrostatic shield and further is not provided with a conductive holding means. Can do.
また、請求項２のき電ケーブル監視装置は、き電線２を絶縁被覆３で覆ったき電ケーブル１が複数箇所に配設されている場合において、各き電ケーブル１の周囲に配設する導体部４と、各導体部４に接続されると共に導体部４の電圧がしきい値を超えた場合に信号を出力する劣化検出器１２とを設け、かつ複数の劣化検出器１２からの出力信号が供給され、き電ケーブル１の異常についての情報、及び異常の生じたき電ケーブル１の配設箇所についての情報を出力する信号出力部１３を設け、上記き電ケーブル１を、絶縁性の保持手段４２で保持、固定し、絶縁被覆３と保持手段４２との間に、導体部４としての薄状の導電体を絶縁被覆３周囲に巻回して配設し、保持手段４２で挟み込んだことを特徴とする。
Further, the feeder cable monitoring device according to claim 2 is a conductor arranged around each feeder cable 1 when feeder cables 1 in which feeder wires 2 are covered with insulating coating 3 are arranged at a plurality of locations. Part 4 and a deterioration detector 12 connected to each conductor part 4 and outputting a signal when the voltage of the conductor part 4 exceeds a threshold value, and output signals from the plurality of deterioration detectors 12 There is provided, the information about the abnormality of the feeding circuit cables 1, and provided with a signal output section 13 for outputting information about an abnormality occurs Taki electric distribution設箇plant cable 1, the feeding circuit cable 1, the retention of the insulating It is held and fixed by the means 42, and a thin conductor as the conductor portion 4 is wound around the insulating coating 3 between the insulating coating 3 and the holding means 42 and sandwiched by the holding means 42. It is characterized by .
上記請求項２のき電ケーブル監視装置によれば、き電ケーブル１の周囲に導体部４を設けたことにより、き電ケーブル１に劣化が生じると、き電線２からの漏れ電流が、導体部４を介して劣化検出器１２によって検出される。また、き電ケーブル１が複数の箇所に配設されている場合において、絶縁被覆３に劣化の生じているき電ケーブル１の配設箇所も特定できる。従って、き電ケーブル１の異常に加えて、異常の生じたき電ケーブル１の配設箇所も知ることができる。また、き電ケーブル１の絶縁被覆３に劣化が生じると、き電線２からの漏れ電流が、導体部４を介して劣化検出器１２によって検出される。従って、請求項２のき電ケーブル監視装置は、き電ケーブル１が静電シールドを備えておらず、さらに導電性の保持手段を備えていない場合においても、絶縁被覆３の劣化を検出することができる。
According to the feeder cable monitoring apparatus of the second aspect, when the conductor portion 4 is provided around the feeder cable 1 and the feeder cable 1 is deteriorated, the leakage current from the feeder line 2 is It is detected by the deterioration detector 12 via the unit 4. Further, when the feeder cable 1 is disposed at a plurality of locations, the location of the feeder cable 1 where the insulation coating 3 has deteriorated can also be specified. Therefore, in addition to the abnormality of the feeding cable 1, the location of the feeding cable 1 where the abnormality has occurred can be known. Further, when the insulation coating 3 of the feeder cable 1 is deteriorated, a leakage current from the feeder line 2 is detected by the deterioration detector 12 through the conductor portion 4. Therefore, the feeder cable monitoring device of claim 2 detects the deterioration of the insulation coating 3 even when the feeder cable 1 is not provided with an electrostatic shield and further is not provided with a conductive holding means. Can do.
請求項３のき電ケーブル監視装置では、上記信号出力部１３から発信されたき電ケーブル１の異常、及び異常箇所を含む出力情報を、通信回線１５を介して、き電ケーブル１の管理者に情報を伝える端末器１６に送信することを特徴としている。
In the feeder cable monitoring device of claim 3, output information including the abnormality of the feeder cable 1 transmitted from the signal output unit 13 and the abnormality location is sent to the administrator of the feeder cable 1 via the communication line 15. It transmits to the terminal device 16 which conveys information.
上記請求項３のき電ケーブル監視装置によれば、絶縁被覆３の劣化を検出した際に、信号出力部１３よりき電ケーブル１の異常発生、及び異常箇所を含む情報を、通信回線１５、及び端末器１６を介して、管理者に即時に伝えることが可能である。
According to the claim 3 eaves conducting cable monitoring device, when detecting the deterioration of the insulation coating 3, occurrence of abnormality in feeding circuit cable 1 from the signal output section 13, and the information including the anomaly, a communication line 15, It is possible to immediately notify the administrator via the terminal 16.
請求項１のき電ケーブル監視装置によれば、従来の目視による人力に頼った絶縁被覆の点検と比較して、より容易にかつ確実に絶縁被覆の劣化を検出することができる。また、地中などのように目視による検査が不可能であったり、あるいは困難な箇所でも、絶縁被覆の劣化を容易に検出できる。従って、従来の目視点検に比較して、より確実にき電ケーブルの地絡事故を防止でき、鉄道運行の安定性を高めることができる。また、き電ケーブルの保持手段を絶縁性としたことにより、き電ケーブルが導体部としての静電シールドを備えておらず、さらに導電性の保持手段を備えていない場合であっても、絶縁被覆の劣化を検出することができる。
According to the feeder cable monitoring apparatus of the first aspect, it is possible to detect the deterioration of the insulation coating more easily and reliably than the conventional inspection of the insulation coating that relies on human power by visual observation. In addition, it is possible to easily detect deterioration of the insulating coating even in places where visual inspection is impossible or difficult, such as in the ground. Therefore, compared to the conventional visual inspection, it is possible to more reliably prevent the ground fault of the feeder cable and improve the stability of the railway operation. In addition, since the feeder cable holding means is made insulative, the feeder cable is not equipped with an electrostatic shield as a conductor portion, and even if it is not equipped with a conductive holding means, it is insulated. Deterioration of the coating can be detected.
請求項２のき電ケーブル監視装置によれば、上記請求項１の場合と同様に、従来の人力に頼った目視点検と比較して、より容易にかつ確実に絶縁被覆の劣化を検出することができる。従って、より確実にき電ケーブルの地絡事故を防止できる。また、複数のき電ケーブルが配設されている場合においても、き電ケーブルの補修や交換を効率よく速やかに行うことができ、労力、コストを大幅に低減できる。また、き電ケーブルの保持手段を絶縁性としたことにより、き電ケーブルが導体部としての静電シールドを備えておらず、さらに導電性の保持手段を備えていない場合であっても、絶縁被覆の劣化を検出することができる。
According to the feeder cable monitoring device of claim 2, as in the case of claim 1, the deterioration of the insulation coating can be detected more easily and reliably than the conventional visual inspection relying on human power. Can do. Therefore, the ground fault of the feeder cable can be more reliably prevented. In addition, even when a plurality of feeder cables are provided, the feeder cables can be repaired or replaced efficiently and quickly, and labor and cost can be greatly reduced. In addition, since the feeder cable holding means is made insulative, the feeder cable is not equipped with an electrostatic shield as a conductor part, and even if it is not equipped with a conductive holding means, it is insulated. Deterioration of the coating can be detected.
請求項３のき電ケーブル監視装置によれば、き電ケーブルの異常発生に関する情報を、通信回線、及び端末器を介して、管理者に即時に伝えることが可能なため、き電ケーブルの管理者は、き電ケーブルを常に監視することができる。
According to the feeder cable monitoring device of claim 3 , since information related to the occurrence of an abnormality of the feeder cable can be immediately transmitted to the administrator via the communication line and the terminal unit, the feeder cable management The person can always monitor the feeder cable.
次に、この発明のき電ケーブル監視装置の具体的な実施の形態について、図面を参照して詳細に説明する。図１は、き電ケーブル監視装置の第１の参考例を示している。図１に示すように、き電ケーブル１は、中心部のき電線２を絶縁被覆３で覆うことで構成され、絶縁被覆３を覆う導体部としての静電シールド（導体部）４と、絶縁被覆５とによって覆われている。静電シールド４は、絶縁被覆の劣化検出器１２に接続される。き電ケーブル１は、例えばトンネル内、陸橋の下、あるいは地中等に配設される。
Next, specific embodiments of the feeder cable monitoring apparatus of the present invention will be described in detail with reference to the drawings. FIG. 1 shows a first reference example of a feeder cable monitoring device. As shown in FIG. 1, can conducting cable 1, a feeder 2 at the center is composed of Flooding in insulation coating 3, the electrostatic shield (conductor portion) 4 serving as a conductor part covering the insulating coating 3, and We covered by the insulating cover 5. The electrostatic shield 4 is connected to an insulation coating deterioration detector 12. The feeder cable 1 is disposed, for example, in a tunnel, under a crossover, or in the ground.
図２は、劣化検出器１２の回路構成の一例を示している。図２に示すように、電流抑制用抵抗２１の一端がき電ケーブル１の静電シールド４に接続され、他端が電圧検出部２２に接続される。電圧検出部２２は、電流の逆流防止用のダイオード２４を介してレール１４に接続される。電圧検出部２２は、検出電圧がしきい値を超えた場合（静電シールド４の電圧がしきい値を超えた場合）にリレー２３を動作させ、接点２５を開又は閉にして接点信号を出力させる。電圧検出部２２はレールではなくアースに接続されてもよい。この場合、ダイオード２４は設けなくてもよい。 FIG. 2 shows an example of the circuit configuration of the deterioration detector 12. As shown in FIG. 2, one end of the current suppressing resistor 21 is connected to the electrostatic shield 4 of the feeder cable 1, and the other end is connected to the voltage detection unit 22. The voltage detection unit 22 is connected to the rail 14 via a diode 24 for preventing a backflow of current. The voltage detector 22 operates the relay 23 when the detected voltage exceeds a threshold value (when the voltage of the electrostatic shield 4 exceeds the threshold value), and opens or closes the contact point 25 to generate a contact signal. Output. The voltage detector 22 may be connected to ground instead of the rail. In this case, the diode 24 may not be provided.
図１に示すき電線２には、直流電圧１５００Ｖが印加されており、絶縁被覆３が劣化すると、劣化の程度に応じてき電線２からの漏れ電流が、絶縁被覆３、静電シールド４、及び抵抗２１を介して電圧検出部２２に流れる。電圧検出部２２は、この漏れ電流に対して検出される電圧がしきい値を超えた場合にリレー２３を動作させ、接点信号を出力させる。劣化検出器１２は信号出力部１３に接続されており、信号出力部１３は、劣化検出器１２からの接点信号を受信すると、絶縁被覆３が劣化し、き電ケーブル１が異常状態であることを示す情報を出力する。 DC voltage 1500V is applied to the feeder 2 shown in FIG. 1, and when the insulation coating 3 deteriorates, the leakage current from the wire 2 depends on the degree of deterioration, and the insulation coating 3, electrostatic shield 4, and It flows to the voltage detector 22 via the resistor 21. The voltage detector 22 operates the relay 23 and outputs a contact signal when the voltage detected with respect to this leakage current exceeds a threshold value. The deterioration detector 12 is connected to the signal output unit 13, and when the signal output unit 13 receives the contact signal from the deterioration detector 12, the insulation coating 3 is deteriorated and the feeding cable 1 is in an abnormal state. The information indicating is output.
き電ケーブル１、及び劣化検出器１２は複数箇所に配設されており、各劣化検出器１２は信号出力部１３に接続されている。信号出力部１３は、各劣化検出器１２から接点信号を受けた場合に、き電ケーブル１の設置場所が特定できるように、信号出力部１３の接点信号入力ポートと劣化検出器１２の設置場所とを対応させている。従って、信号出力部１３では、接点信号を受信すると、どの場所の劣化検出器１２から発せられた信号かを識別することが可能であり、どの場所のき電ケーブル１に異常があるかを識別して、き電ケーブル１の異常、及び設置場所の情報を出力する。この出力情報（例えばメッセージ情報）は、通信回線１５を介して、管理者に情報を伝える端末器１６に送信される。管理者は、端末器１６により、どの場所又はどの区間のき電ケーブル１に異常があるかを知ることができ、速やかにき電ケーブル１の交換等の対応処置をとることができる。従って、このき電ケーブル監視装置によって、き電ケーブル１の地絡事故を未然に防止し、鉄道運行の安全を確保することができる。 The feeding cable 1 and the deterioration detector 12 are disposed at a plurality of locations, and each deterioration detector 12 is connected to the signal output unit 13. The signal output unit 13 receives the contact signal from each deterioration detector 12 so that the installation location of the feeding cable 1 can be specified so that the installation location of the contact signal input port of the signal output unit 13 and the deterioration detector 12 can be specified. And correspond. Accordingly, when the signal output unit 13 receives the contact signal, it is possible to identify the location of the deterioration detector 12 and the location of the feeder cable 1 that is abnormal. Then, information on the abnormality of the feeding cable 1 and the installation location is output. This output information (for example, message information) is transmitted via the communication line 15 to the terminal 16 that conveys information to the administrator. The administrator can know which location or which section of the feeder cable 1 is abnormal by using the terminal device 16 and can quickly take corresponding measures such as replacement of the feeder cable 1. Therefore, the feeder cable monitoring device can prevent a ground fault of the feeder cable 1 and ensure the safety of railway operation.
この通信回線１５は、インターネット、携帯電話網、又は専用回線等、有線、無線を問わず種々のものを利用でき、端末器１６は、パソコン、携帯電話、又は専用の受信装置等、種々の機器を利用できる。また、信号出力部１３は、種々の通信回線１５を介して複数の端末器１６に情報を送ることもできる。 The communication line 15 can use various types of devices such as the Internet, a mobile phone network, or a dedicated line, whether wired or wireless, and the terminal device 16 can be a variety of devices such as a personal computer, a mobile phone, or a dedicated receiving device. Can be used. The signal output unit 13 can also send information to a plurality of terminals 16 via various communication lines 15.
次に図３は、き電ケーブル監視装置の第２の参考例の斜視図を示している。図３に示すように、この参考例では、き電線２を絶縁被覆３で覆ったき電ケーブル１を、複数の導電性のクリート３２で保持、固定することを特徴としている。導電性クリート３２は、き電ケーブル１を上部クリートと下部クリートの間に挟んで保持している。この導電性クリート３２の複数を連結線３３で接続し、連結線３３と劣化検出器１２とを接続する。この連結線３３で連結された複数の導電性クリート３２に対して、一台の劣化検出器１２が設けられる。き電ケーブル１が比較的長い場合には、この連結された複数の導電性クリート３２と劣化検出器１２との組合わせを、き電ケーブル１に沿って適切な間隔で複数配設する。絶縁被覆３が劣化すると、き電線２からの漏れ電流は、絶縁被覆３、導電性クリート３２、及び連結線３３を介して劣化検出器１２に伝わり、絶縁被覆３の劣化が検出される。劣化の情報を管理者に伝える手段は、上記図１、及び図２の参考例と同様である。
Next, FIG. 3 shows a perspective view of a second reference example of the feeder cable monitoring device. As shown in FIG. 3, this reference example is characterized in that a feeder cable 1 in which a feeder 2 is covered with an insulating coating 3 is held and fixed by a plurality of conductive cleats 32. The conductive cleat 32 holds the feeder cable 1 sandwiched between the upper cleat and the lower cleat. A plurality of the conductive cleats 32 are connected by a connecting line 33, and the connecting line 33 and the deterioration detector 12 are connected. One deterioration detector 12 is provided for the plurality of conductive cleats 32 connected by the connection line 33. When the feeder cable 1 is relatively long, a plurality of combinations of the plurality of connected conductive cleats 32 and the deterioration detector 12 are arranged along the feeder cable 1 at appropriate intervals. When the insulating coating 3 is deteriorated, the leakage current from the feeder 2 is transmitted to the deterioration detector 12 via the insulating coating 3, the conductive cleat 32, and the connecting wire 33, and the deterioration of the insulating coating 3 is detected. Means for notifying the manager of the deterioration information is the same as the reference example in FIGS.
図３の参考例では、き電ケーブル１が図１の参考例のような静電シールド４、及び絶縁被覆５を備えていない場合でも絶縁被覆３の劣化を検出することができる。従って、この参考例を実施するために、既に配設済みの静電シールド４を備えていないき電ケーブル１を、静電シールドを備えたケーブルに交換する必要が無く、ケーブルの交換コストを削減することができる。また、き電ケーブル１の全長が比較的長い場合にも、連結された複数の導電性クリート３２と劣化検出器１２との組合わせを、き電ケーブル１に沿って複数箇所に配設して、信号がどの劣化検出器１２から発せられたかを識別することにより、き電ケーブル１の劣化が生じている区間を正確に知ることができ、き電ケーブル１の補修が容易になる。従ってこの参考例は、配設区間の長いき電ケーブル１に対して適している。これにより、き電ケーブル１の地絡事故を未然に防止でき、労力、コストを低減できる。
In the reference example of FIG. 3, it is possible to detect the deterioration of the insulating coating 3 even when the feeder cable 1 does not include the electrostatic shield 4 and the insulating coating 5 as in the reference example of FIG. 1. Therefore, in order to implement this reference example , it is not necessary to replace the feeder cable 1 that does not have the already installed electrostatic shield 4 with a cable having the electrostatic shield, thereby reducing the cost of replacing the cable. can do. Even when the feeder cable 1 has a relatively long overall length, a combination of a plurality of connected conductive cleats 32 and deterioration detectors 12 is arranged at a plurality of locations along the feeder cable 1. By identifying which deterioration detector 12 the signal is emitted from, it is possible to accurately know the section where the feeding cable 1 is deteriorated, and the feeding cable 1 can be easily repaired. Therefore, this reference example is suitable for the feeder cable 1 having a long arrangement section. Thereby, the ground fault accident of the feeder cable 1 can be prevented beforehand, and labor and cost can be reduced.
図４は、この発明に基づくき電ケーブル監視装置の実施形態の斜視図を示している。また図５は、図４に示した実施形態の断面図を示している。この実施形態では、図４に示すように、き電線２を絶縁被覆３で覆ったき電ケーブル１を、複数の絶縁性のクリート４２で保持、固定し、図５に示すように、絶縁被覆３とクリート４２の間に、導体部としての薄状の導電体４を絶縁被覆３の周囲を巻回して配設し、上部クリートと下部クリートで挟み込んだことを特徴としている。この導電体４の複数を連結線３３で接続し、連結線３３を劣化検出器１２に接続する。この連結線３３で連結された複数の導電体４に対して、一機の劣化検出器１２が設けられる。き電ケーブル１が比較的長い場合には、連結された複数の導電体４と劣化検出器１２との組合わせを、き電ケーブル１に沿って適切な間隔で複数配設する。絶縁被覆３が劣化すると、き電線２からの漏れ電流は、絶縁被覆３、導電体４、及び連結線３３を介して劣化検出器１２に伝わり、絶縁被覆３の劣化が検出される。劣化の情報を管理者に伝える手段は、上記図１、及び図２の参考例と同様である。
FIG. 4 shows a perspective view of an embodiment of the feeder cable monitoring apparatus according to the present invention. FIG. 5 shows a cross-sectional view of the embodiment shown in FIG. In this embodiment, as shown in FIG. 4, the feeder cable 1 with the feeder 2 covered with the insulation coating 3 is held and fixed by a plurality of insulating cleats 42, and as shown in FIG. A thin conductor 4 serving as a conductor portion is wound around the insulating coating 3 between the cleat 42 and the cleat 42, and is sandwiched between the upper cleat and the lower cleat. A plurality of the conductors 4 are connected by a connecting line 33, and the connecting line 33 is connected to the deterioration detector 12. One deterioration detector 12 is provided for the plurality of conductors 4 connected by the connection line 33. When the feeding cable 1 is relatively long, a plurality of combinations of a plurality of conductors 4 and deterioration detectors 12 connected to each other are arranged along the feeding cable 1 at appropriate intervals. When the insulating coating 3 deteriorates, the leakage current from the feeder 2 is transmitted to the deterioration detector 12 via the insulating coating 3, the conductor 4, and the connecting wire 33, and the deterioration of the insulating coating 3 is detected. Means for notifying the manager of the deterioration information is the same as the reference example in FIGS.
上記図４、及び図５の実施形態においても、導体部として導電性のクリート３２を用いた上記図３の参考例と同様の効果が得られる。また、この実施形態では、既存のき電ケーブル保持手段として図３の参考例のような導電性のクリートが用いられていない場合も、この発明の実施のためにクリートを導電性のものに交換する必要が無く、交換コストを削減することができる。また、図４、及び図５の実施形態では、き電ケーブルを保持するクリートを絶縁性としたことにより、図３の参考例のような、ステンレス等の導電性素材のクリートを用いる場合と比較して、セラミックスや樹脂等のより安価な素材のクリートを選択でき、設備コストを削減できる。
In the embodiment of FIGS. 4 and 5 as well, the same effect as the reference example of FIG. 3 using the conductive cleat 32 as the conductor portion can be obtained. Further, in this embodiment, even when the conductive cleat as in the reference example of FIG. 3 is not used as the existing feeder cable holding means, the cleat is replaced with a conductive one for the implementation of the present invention. There is no need to do so, and the replacement cost can be reduced. Further, in the embodiment shown in FIGS. 4 and 5, since the cleat for holding the feeding cable is made insulating, it is compared with the case of using a cleat made of a conductive material such as stainless steel as in the reference example of FIG. Thus, cleats of cheaper materials such as ceramics and resins can be selected, and the equipment cost can be reduced.
以上にこの発明のき電ケーブル監視装置の具体的な実施の形態について説明したが、この発明は上記実施の形態に限定されるものではなく、この発明の範囲内で種々変更して実施することが可能である。例えば、図１の参考例では、絶縁被覆３を覆う導体部として、絶縁被覆３をシールドする静電シールド４を用いているが、導電体であれば細銅線の束など、種々の材料を用いてよい。
Although the specific embodiment of the feeder cable monitoring device of the present invention has been described above, the present invention is not limited to the above embodiment, and various modifications are made within the scope of the present invention. Is possible. For example, in the reference example of FIG. 1, an electrostatic shield 4 that shields the insulating coating 3 is used as a conductor portion that covers the insulating coating 3, but various materials such as a bundle of fine copper wires can be used for the conductor. May be used.
１・・き電ケーブル、２・・き電線、３・・絶縁被覆、４・・導体部、１２・・劣化検出器、１３・・信号出力部、１５・・通信回線、１６・・端末器、３２・・導電性のケーブル保持手段、４２・・絶縁性のケーブル保持手段 1 .... feeder cable, 2 .... feeder, 3 .... insulation coating, 4 .... conductor part, 12 .... deterioration detector, 13 .... signal output part, 15 .... communication line, 16 .... terminal 32 .. Conductive cable holding means, 42 .. Insulating cable holding means
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| JP4925203B2 (en) * | 2007-07-04 | 2012-04-25 | 日本電設工業株式会社 | Ground wire installation confirmation device |
| JP4951014B2 (en) * | 2009-03-19 | 2012-06-13 | 東日本旅客鉄道株式会社 | Cable status judging apparatus and method |
| JP2012182966A (en) * | 2011-02-28 | 2012-09-20 | Yoshimoto Ukita | Accident prevention and security administrator job efficiency apparatus by previously predicting and measuring water treeing phenomenon of distribution line cv cable insulator for high voltage reception |
| KR101157160B1 (en) | 2011-03-02 | 2012-06-20 | 한국전력공사 | Assembly for connection portion of underground low tension cable |
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| JP3240479B2 (en) * | 1992-03-19 | 2001-12-17 | 株式会社日立製作所 | Micro ground fault section location device |
| JPH062518U (en) * | 1992-06-11 | 1994-01-14 | 稔 中田 | Power cable with tree detector |
| JPH0636144U (en) * | 1992-10-19 | 1994-05-13 | 昭和電線電纜株式会社 | Bulk sheath cable |
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| JP3429542B2 (en) * | 1993-12-17 | 2003-07-22 | 財団法人鉄道総合技術研究所 | DC feeding circuit grounding fault detection method |
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| JP2000065868A (en) * | 1998-08-25 | 2000-03-03 | Eiraku Denki Kk | Measurement from outside of dc cable coating for core wire voltage and device therefor |
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| JP3864775B2 (en) * | 2001-12-13 | 2007-01-10 | 日立電線株式会社 | Trolley wire abnormality detection method |
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