JP4155356B2 - Abnormal vibration detection mechanism of overhead power transmission line - Google Patents
Abnormal vibration detection mechanism of overhead power transmission line Download PDFInfo
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- 230000002159 abnormal effect Effects 0.000 title claims description 45
- 238000001514 detection method Methods 0.000 title claims description 43
- 230000005540 biological transmission Effects 0.000 title claims description 42
- 229910000831 Steel Inorganic materials 0.000 claims description 17
- 239000010959 steel Substances 0.000 claims description 17
- 230000004397 blinking Effects 0.000 claims description 3
- 229910052987 metal hydride Inorganic materials 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 229910052759 nickel Inorganic materials 0.000 description 5
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 5
- -1 nickel metal hydride Chemical class 0.000 description 5
- 238000009434 installation Methods 0.000 description 3
- 230000007774 longterm Effects 0.000 description 3
- 230000007257 malfunction Effects 0.000 description 3
- 238000012790 confirmation Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 239000012212 insulator Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
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Description
この発明は、架空送電線に発生するギャロッピング、スリートジャンプ等の異常振動を検知するための異常振動検知機構に関するものである。
The present invention galloping occur overhead lines, regarding abnormal vibration detecting mechanism for detecting the abnormal vibration such as Sri Tojanpu.
鉄塔間に架設されている架空送電線は、自然風、氷雪の付着や脱落によって、種々の態様で振動する。その内、ギャロッピング現象は、鉄塔への動的な不平均張力を発生させ、設備の損傷や事故の発生原因となる。ギャロッピング現象による事故は、断線を伴い、長時間の供給支障となる場合もあり、事故発生箇所の早期特定が必要である。また、系統事故や設備事故に至らないギャロッピング現象であっても、鉄塔ボルトの抜出の設備被害が生じることがあり、ギャロッピング現象を検知することの必要性は極めて高い。 Overhead power transmission lines installed between steel towers vibrate in various ways due to the attachment and dropout of natural wind, ice and snow. Among them, the galloping phenomenon generates dynamic non-average tension to the steel tower, causing damage to facilities and accidents. An accident due to the galloping phenomenon is accompanied by a disconnection, which may hinder supply for a long time, and it is necessary to identify the location of the accident early. Moreover, even if the galloping phenomenon does not lead to a grid fault or equipment accident, equipment damage due to the extraction of steel tower bolts may occur, and the necessity of detecting the galloping phenomenon is extremely high.
そこで、特許文献１のギャロッピング検知機構においては、張力変動検出センサと振れ角検出センサとを使用し、張力変動検出センサによって張力変動が最も顕著に現れる振動周波数を求め、また振れ角検出センサによって振幅変位を求めることによりギャロッピング現象の発生を検知している。また、鉄塔などの固定点にセンサを設置し、上下振動する架線金具に伝達棒を受治具を介して取付け、伝達棒の変位をセンサで検出することによりギャロッピング現象を検知する手法も公知である。
ところで、上記特許文献１のギャロッピング検知機構においては、２種類のセンサを使用すること、及び得られたデータの解析を監視局内のコンピュータで行っていることから、検知装置の付設に多くの手数を要し、また装置自体も高価なものとなっていた。上記公知の検知方法においても、３種類の治具（取付点治具、伝達棒、受治具）を必要とし、これら冶具の取付けに際しては、捩じれ現象による誤動作を防ぐため、回転の中心を極力、耐張装置の中心軸に配置する等の工夫が必要であった。従って、取付け作業に極めて多くの手数を要していた。 By the way, in the galloping detection mechanism of the above-mentioned patent document 1, since two types of sensors are used and analysis of the obtained data is performed by a computer in the monitoring station, a large amount of work is required for attaching the detection device. In addition, the device itself is expensive. The known detection method also requires three types of jigs (attachment point jigs, transmission rods, and receiving jigs). When attaching these jigs, the center of rotation is minimized as much as possible to prevent malfunctions due to twisting. It was necessary to devise such as disposing on the central axis of the tension device. Therefore, an extremely large amount of work is required for the installation work.
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、既存の設備への取付け作業を容易に行うことが可能であり、また安価に構成可能な架空送電線の異常振動検知機構を提供することにある。 The present invention has been made to solve the above-described conventional problems, and its purpose is to provide an overhead power transmission line that can be easily attached to existing equipment and can be configured at low cost. It is to provide an abnormal vibration detection mechanism.
そこで、請求項１の架空送電線の異常振動検知機構は、ギャロッピング等の異常振動を検知する異常振動検知手段１０と、ギャロッピング等の異常振動が検知されたことを発光表示する表示手段１１とを単一のケーシング１２に収納して成る本体部Ｈを備えると共に、さらに本体部Ｈに電力を供給する電源部Ｄを備え、上記本体部Ｈを収納したケーシング１２を、架空送電線を支持する耐張装置等３０における架空送電線との連動部分３１に取付け、上記ケーシング１２は、取付状態において、表示手段１１が下方を向いて地上から視覚により確認できるように構成され、また、上記電源部Ｄは、太陽電池２１を含み、かつ鉄塔に取付けられており、上記表示手段１１は、点滅表示を行うと共に、電源部Ｄからの給電が停止しても表示状態を維持し、電源部Ｄが復帰すると、表示手段１１が再点灯することを特徴としている。
Therefore, abnormal vibration detecting mechanism for overhead transmission lines according to claim 1, the abnormal vibration detecting means 10 for detecting the abnormal vibration such as galloping, and display means 11 for the light-emitting display that abnormal vibration such as galloping is detected A main body H is provided that is housed in a single casing 12, and further includes a power source D that supplies power to the main body H , and the casing 12 that houses the main body H supports the overhead power transmission line. give taken in conjunction portion 31 of the overhead power transmission line in applying apparatus such as 30, the casing 12 is in the mounted state, the display unit 11 is configured to be confirmed visually from the ground faces downward, also, the power supply unit D includes a solar cell 21 and is attached to a steel tower. The display means 11 performs a blinking display and also displays a display state even when power supply from the power source D is stopped. Lifting and, when the power unit D is restored, is characterized in that the display unit 11 is turned on again.
請求項２の架空送電線の異常振動検知機構は、さらに、上方に向いた上記同様の表示手段を付加したことを特徴としている。
The abnormal vibration detection mechanism of the overhead power transmission line according to claim 2 is further characterized in that a display means similar to the above is added.
請求項３の架空送電線の異常振動検知機構は、上記異常振動検知手段１０は、ジャイロセンサ１を含み、このジャイロセンサ１で上記架空送電線との連動部分３１の上下振動を検出し、特定周波数帯の振動の出力が規定値以上になったときに、ギャロッピング等の異常振動が発生したことを検知することを特徴としている。 The abnormal vibration detection mechanism for an overhead power transmission line according to claim 3 is characterized in that the abnormal vibration detection means 10 includes a gyro sensor 1, and the gyro sensor 1 detects the vertical vibration of the interlocking portion 31 with the overhead power transmission line. It is characterized by detecting that abnormal vibration such as galloping has occurred when the output of the vibration in the frequency band exceeds a specified value.
請求項４の架空送電線の異常振動検知機構は、上記特定周波数帯は、０．１Ｈｚ以上で、１．０Ｈｚ以下の周波数帯であることを特徴としている。 The abnormal vibration detection mechanism for an overhead power transmission line according to claim 4 is characterized in that the specific frequency band is a frequency band of 0.1 Hz or more and 1.0 Hz or less.
請求項５の架空送電線の異常振動検知機構は、上記規定値を変更する規定値変更手段を備えていることを特徴としている。 According to a fifth aspect of the present invention, there is provided an abnormal vibration detection mechanism for an overhead power transmission line comprising a specified value changing means for changing the specified value.
請求項１の架空送電線の異常振動検知機構では、ギャロッピング等の異常振動を検知する異常振動検知手段１０と、ギャロッピング等の異常振動が検知されたことを発光表示する表示手段１１とを有する本体部Ｈを、架空送電線を支持する耐張装置３０における架空送電線との連動部分３１に一括して取付けているので、取付け作業を容易化できる。また、上記本体部Ｈを単一のケーシング１２に収納したので、その取扱いが容易になり、高所での取付作業能率を向上できる。さらに、電源部Ｄが、太陽電池２１を含み、本体部Ｈの近傍の鉄塔に取付けられているので、地上から電源を供給するような場合に比較して、取付作業は容易となる。また、表示手段が下方を向いているので、ギャロッピング等の異常振動現象の発生の有無を地上から視覚により確認でき、ヘリコプターを使用して空中から確認するよような場合に比較して、使用上の利便性が向上する。しかも、表示手段が点滅表示を行うので、視覚性が向上し、確認作業を容易、かつ確実に行えることになる。さらに、表示手段の表示状態が維持されるので、長期間の非日射により、表示手段が非表示状態になっても、日射により太陽電池２１が復帰すると、表示手段は再点灯する。
The abnormal vibration detection mechanism for an overhead power transmission line according to claim 1 includes a main body having an abnormal vibration detection means 10 for detecting abnormal vibration such as galloping and a display means 11 for displaying that abnormal vibration such as galloping has been detected. Since the part H is collectively attached to the interlocking part 31 with the overhead power transmission line in the tension device 30 that supports the overhead power transmission line, the attachment work can be facilitated. Moreover, since the said main-body part H was accommodated in the single casing 12, the handling becomes easy and it can improve the installation work efficiency in a high place. Furthermore, since the power supply part D includes the solar cell 21 and is attached to a steel tower in the vicinity of the main body part H, the attachment work becomes easier as compared with a case where power is supplied from the ground. In addition, since the display means is facing downward, it is possible to visually confirm the occurrence of abnormal vibration phenomena such as galloping from the ground, and in comparison to using a helicopter to check from the air. Improved convenience. In addition, since the display means performs blinking display, the visibility is improved, and the confirmation operation can be performed easily and reliably. Furthermore, since the display state of the display means is maintained, even if the display means is not displayed due to long-term non-sunlight, the display means is turned on again when the solar cell 21 is restored by solar radiation.
請求項２の架空送電線の異常振動検知機構では、積雪が激しく入山不可能な場所でもヘリコプター巡視による確認が可能となる。
According to the abnormal vibration detection mechanism of the overhead power transmission line of claim 2, it is possible to check by helicopter patrol even in a place where the snow is heavy and the mountain cannot be entered.
請求項３の架空送電線の異常振動検知機構では、異常振動検知手段１０が、ジャイロセンサ１を有している。このジャイロセンサ１は、狙った方向の角速度しか検出しないため、方向さえ間違わなければよいので、取付作業を容易化できる。また、ジャイロセンサ１を使用し、目的とする方向の角速度のみを検出するので、風等によって生ずる捩じれ方向の角速度を除外し、誤作動を防止でき、検知精度を向上できる。 In the abnormal vibration detection mechanism of the overhead power transmission line according to claim 3, the abnormal vibration detection means 10 includes the gyro sensor 1. Since the gyro sensor 1 detects only the angular velocity in the aimed direction, it is not necessary to make a mistake in the direction, so that the mounting operation can be facilitated. In addition, since the gyro sensor 1 is used to detect only the angular velocity in the target direction, the angular velocity in the torsional direction caused by the wind or the like can be excluded, malfunctioning can be prevented, and detection accuracy can be improved.
請求項４の架空送電線の異常振動検知機構では、主として０．１Ｈｚ〜１．０Ｈｚの特定周波数帯の振動を取り出すことができるので、微風振動や乱流振動等の影響を取り除くことができる。従って、誤作動を防止でき、検知精度を向上できる。 According to the abnormal vibration detection mechanism of the overhead power transmission line according to the fourth aspect of the invention, vibrations in a specific frequency band of 0.1 Hz to 1.0 Hz can be mainly extracted, so that influences such as light wind vibrations and turbulent flow vibrations can be removed. Therefore, malfunction can be prevented and detection accuracy can be improved.
請求項５の架空送電線の異常振動検知機構では、ギャロッピング等の異常振動現象の発生を検知するための規定値を変更する規定値変更手段を備えているので、状況に応じた規定値の設定が行え、そのため検知精度を向上できる。 The abnormal vibration detection mechanism for an overhead power transmission line according to claim 5 is provided with specified value changing means for changing a specified value for detecting occurrence of an abnormal vibration phenomenon such as galloping, so that a specified value is set according to the situation. Therefore, the detection accuracy can be improved.
次に、この発明の架空送電線の異常振動検知機構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、この発明に基づく架空送電線の異常振動検知機構の実施形態の回路ブロック図を示す。図１において、１はジャイロセンサであって、このジャイロセンサ１の出力電圧が、ハイパスフィルタ２、及びローパスフィルタ３を経由して比較回路４に入力される。ジャイロセンサ１は、圧電振動形角速度センサであって、ある方向に振動（１次振動）する質量に角速度がつくと「コリオリ効果」でそれに直交する方向にも振動（２次振動）が発生することを利用したものである。上記比較回路４においては、その入力電圧が、レベル設定部５において設定されている規定値と比較され、入力電圧が規定値以上であるときに、ギャロッピング現象が発生したとして、比較回路４からラッチングリレー６へ出力される。ラッチングリレー６が動作すると、接点Ｒが閉じ、発信器７がフラッシュランプ８（例えば、高輝度青色発光ダイオード（ＬＥＤ））に接続され、フラッシュランプ８が点滅する。なお、図１において、９はカウンタであり、このカウンタ９によってギャロッピング現象の発生回数を計測している。上記において、ジャイロセンサ１、ハイパスフィルタ２、ローパスフィルタ３、比較回路、レベル設定部５でギャロッピング検知手段１０が構成され、またラッチングリレー６、発信器７、フラッシュランプ８、カウンタ９によって表示手段１１が構成されている。そして、上記ギャロッピング検知手段１０と表示手段１１とから成る本体部Ｈが、一括して、単一のケーシング１２に収納されている。 Next, a specific embodiment of an abnormal vibration detection mechanism for an overhead power transmission line according to the present invention will be described in detail with reference to the drawings. FIG. 1 shows a circuit block diagram of an embodiment of an abnormal vibration detection mechanism for an overhead power transmission line according to the present invention. In FIG. 1, reference numeral 1 denotes a gyro sensor, and an output voltage of the gyro sensor 1 is input to a comparison circuit 4 via a high pass filter 2 and a low pass filter 3. The gyro sensor 1 is a piezoelectric vibration type angular velocity sensor. When an angular velocity is applied to a mass that vibrates in a certain direction (primary vibration), vibration (secondary vibration) is generated in a direction orthogonal to the Coriolis effect. It is something that uses that. In the comparison circuit 4, the input voltage is compared with a specified value set in the level setting unit 5, and if the galloping phenomenon occurs when the input voltage is equal to or higher than the specified value, latching is performed from the comparison circuit 4. Output to relay 6. When the latching relay 6 operates, the contact R is closed, the transmitter 7 is connected to a flash lamp 8 (for example, a high-intensity blue light emitting diode (LED)), and the flash lamp 8 blinks. In FIG. 1, 9 is a counter, and the counter 9 measures the number of occurrences of the galloping phenomenon. In the above, the gyro sensor 1, the high-pass filter 2, the low-pass filter 3, the comparison circuit, and the level setting unit 5 constitute the galloping detection means 10, and the latching relay 6, the transmitter 7, the flash lamp 8, and the counter 9 display the display means 11. Is configured. The main body H composed of the galloping detection means 10 and the display means 11 is collectively stored in a single casing 12.
上記本体部Ｈに対しては、図１に示しているように、電源部Ｄから制御用電力が供給される。電源部Ｄは、太陽電池２１を備えており、太陽電池２１の出力が過充電防止回路２２を経由してニッケル水素電池２３と電源回路２４とに入力されている。そして、電源回路２４を経由して、制御用電力が本体部Ｈに供給される。上記電源部Ｄにおいては、太陽電池２１の出力により、ニッケル水素電池２３を充電したり、本体部Ｈに制御用電力を供給する。また、夜間等において、太陽電池２１が非出力の場合には、ニッケル水素電池２３から本体部Ｈに制御用電力を供給する。 As shown in FIG. 1, control power is supplied from the power source D to the main body H. The power supply unit D includes a solar cell 21, and the output of the solar cell 21 is input to the nickel metal hydride battery 23 and the power supply circuit 24 via the overcharge prevention circuit 22. Then, the control power is supplied to the main body H via the power supply circuit 24. In the power source D, the nickel metal hydride battery 23 is charged or the control power is supplied to the main body H by the output of the solar cell 21. Further, when the solar battery 21 is not outputting at night or the like, control power is supplied from the nickel metal hydride battery 23 to the main body H.
上記本体部Ｈは、図２〜図４に示すように、架空送電線を鉄塔に支持する場合における鉄塔取付け側の金具３１、すなわち架空送電線（がいし連）と連動して上下振れ振動が検出し易い部分３１に、簡単な取付冶具３２、あるいは磁石を利用して取付ける。図２は、２連耐張装置３０において、鉄塔取付け側の金具３１に取付けた例を示し、また図３は、上記同様に、２連耐張装置３０において、鉄塔取付け側の金具３１に取付けた例を示し、図４は、４連耐張装置３０を鉄塔に取付けるための耐張装置取付金具３１に取付けた例を示している。各図において、３３はアークホーン、３４はがいし連をそれぞれ示している。この場合、上記ジャイロセンサ１は、鉄塔取付金具３１の裏面（下側面）にできるだけ密接するように、また上記表示手段１１のフラッシュランプ８は、ケーシング１２の裏面（下側面）に露出し、地上から観察可能に配置する。なお、電源部Ｄは、本体部Ｈの近傍の鉄塔、あるいは上記本体部Ｈと同様に鉄塔取付金具３１等に取付ける。 As shown in FIGS. 2 to 4, the main body H detects up and down vibration in conjunction with the metal fitting 31 on the steel tower mounting side when supporting the overhead power transmission line on the steel tower, that is, the overhead power transmission line (insulation link). It attaches to the easy part 31 using a simple attachment jig 32 or a magnet. FIG. 2 shows an example in which the double tension device 30 is attached to the metal fitting 31 on the steel tower mounting side, and FIG. FIG. 4 shows an example in which the four-strand tension device 30 is mounted on a tension device mounting bracket 31 for mounting to a steel tower. In each figure, 33 indicates an arc horn, and 34 indicates an insulator string. In this case, the gyro sensor 1 is as close as possible to the back surface (lower side surface) of the steel tower mounting bracket 31, and the flash lamp 8 of the display means 11 is exposed to the back surface (lower side surface) of the casing 12, and Arranged to be observable. The power source D is attached to a steel tower in the vicinity of the main body H or to the steel tower mounting bracket 31 and the like in the same manner as the main body H.
次に、上記バンドパスフィルタ（ハイパスフィルタ２とローパスフィルタ３との組合せ）における選択周波数帯の設定方法、及び上記レベル設定部５において設定されている規定値の設定方法について説明する。まず、送電線における各現象の特徴を、対比して表１に示す。 Next, a method for setting a selected frequency band in the band-pass filter (a combination of the high-pass filter 2 and the low-pass filter 3) and a method for setting a specified value set in the level setting unit 5 will be described. First, Table 1 shows the characteristics of each phenomenon in the transmission line.
この表１からギャロッピング現象に関し、次の事項が明らかとなる。すなわち、ギャロッピング現象は、振動周波数帯が極めて狭く（主として０．１Ｈｚ〜１．０Ｈｚ）、また振幅が極めて大きな垂直楕円振動であるということである。そのため、上記したように、ジャイロセンサ１を、耐張装置３０の鉄塔取付け部で、上下方向に振動する架線金具３１に取付けている。また、上記理由から、バンドパスフィルタ（ハイパスフィルタ２とローパスフィルタ３との組合せ）における選択周波数帯を、主として０．１Ｈｚ〜１．０Ｈｚとして、サブスパン振動、微風振動、乱流振動、風による電線横振れ、着氷雪による電線垂れ込み等と区別できるようにしている。また、レベル設定部５における規定値の設定は、以下のようにして行う。まず、ギャロッピング設計手法に基づき、ギャロッピング発生時の電線（径間）振幅、張力変動を計算し、それに相当する耐張がいし装置取付け部分の上不振れ角を算出する。上記において求めた上下振れ角、及び上記周波数帯の角速度を求め、それに応じた出力電圧を算出する。出力電圧に応じて、レベル設定部５に設けている可変抵抗（規定値変更手段）を調整し、規定値を設定する。そして最後に、加振機により所定の角度と周波数を与え、可変抵抗を微調整する。 From Table 1, the following matters become clear regarding the galloping phenomenon. That is, the galloping phenomenon is vertical elliptical vibration with a very narrow vibration frequency band (mainly 0.1 Hz to 1.0 Hz) and a very large amplitude. Therefore, as described above, the gyro sensor 1 is attached to the overhead wire fitting 31 that vibrates in the vertical direction at the steel tower attachment portion of the tension device 30. For the above reasons, the selected frequency band in the band-pass filter (the combination of the high-pass filter 2 and the low-pass filter 3) is mainly set to 0.1 Hz to 1.0 Hz, and the sub-span vibration, the slight wind vibration, the turbulent vibration, the electric wire by wind It can be distinguished from side sway and sag due to icing snow. Further, the setting of the specified value in the level setting unit 5 is performed as follows. First, based on the galloping design method, the wire (diameter) amplitude and tension fluctuation at the time of galloping are calculated, and the upper stagger angle corresponding to the tension insulator attachment portion is calculated. The vertical deflection angle obtained in the above and the angular velocity of the frequency band are obtained, and the output voltage corresponding to that is calculated. In accordance with the output voltage, a variable resistor (specified value changing means) provided in the level setting unit 5 is adjusted to set a specified value. Finally, a predetermined angle and frequency are given by the vibrator, and the variable resistance is finely adjusted.
このような状態における上記架空送電線の異常振動検知機構の作動状態について説明する。まず、架空送電線が振動すると、ジャイロセンサ１によって、角速度に応じた電圧が出力される。バンドパスフィルタ（ハイパスフィルタ２とローパスフィルタ３との組合せ）においては、必要な周波数域以外の電圧波形がカットされる。比較回路４では、レベル設定部５において設定されている規定値と実際の動きとを比較し、設定レベル（規格値）を超えた時、電圧信号を出力する。比較回路４からの出力電圧を感知した場合、ラッチングリレー６が動作し、回路（接点Ｒ）を閉じる。回路が閉じたら、フラッシュランプ８（例えば、高輝度青色発光ダイオード（ＬＥＤ））が点灯する。フラッシュランプ８は、発振器７により、例えば、０．５Ｈｚで点滅させる。上記本体部Ｈの電源としては、太陽電池２１を用い、ニッケル水素電池２３を充電しながら使用する。なお、過充電を防止するために、過充電防止回路（充電制御器）２２を使用する。ラッチングリレー６は、一旦動作すると、接点Ｒを閉じた状態で維持するため、長期間の非日射により、ニッケル水素電池２３が過放電し、フラッシュランプ８が消燈しても、日射により太陽電池２１が復帰すると、ニッケル水素電池２３に充雷を開始し、フラッシュランプ８が再点灯する。このフラッシュランプ８の点灯状態は、強制的にリセットしない限り解除できないようになっている。 The operating state of the abnormal vibration detection mechanism of the overhead power transmission line in such a state will be described. First, when the overhead power transmission line vibrates, the gyro sensor 1 outputs a voltage corresponding to the angular velocity. In the band-pass filter (a combination of the high-pass filter 2 and the low-pass filter 3), the voltage waveform outside the necessary frequency range is cut. The comparison circuit 4 compares the specified value set in the level setting unit 5 with the actual movement, and outputs a voltage signal when the set level (standard value) is exceeded. When the output voltage from the comparison circuit 4 is sensed, the latching relay 6 operates to close the circuit (contact R). When the circuit is closed, the flash lamp 8 (eg, a high intensity blue light emitting diode (LED)) is lit. The flash lamp 8 is caused to blink at, for example, 0.5 Hz by the oscillator 7. As the power source of the main body H, a solar battery 21 is used and the nickel metal hydride battery 23 is used while being charged. In order to prevent overcharge, an overcharge prevention circuit (charge controller) 22 is used. Once the latching relay 6 is operated, the contact R is maintained in a closed state. Therefore, even if the nickel-metal hydride battery 23 is overdischarged by long-term non-sunlight and the flash lamp 8 is extinguished, When 21 returns, the nickel metal hydride battery 23 starts to lighten, and the flash lamp 8 is turned on again. The lighting state of the flash lamp 8 cannot be canceled unless it is forcibly reset.
上記架空送電線の異常振動検知機構では、単一のケーシング１２に収納された本体部Ｈを、架空送電線を支持する耐張装置３０における架空送電線との連動部分３１に一括して取付けたので、高所での取付作業能率を向上できる。また、ジャイロセンサ１は、狙った方向の角速度しか検出しないため、方向さえ間違わなければよいので、取付作業を容易化できる。また、ジャイロセンサ１を使用し、目的とする方向の角速度のみを検出するので、風等によって生ずる捩じれ方向の角速度を除外し、誤作動を防止でき、検知精度を向上できる。さらに、主として０．１Ｈｚ〜１．０Ｈｚの特定周波数帯の振動を取り出しているので、微風振動、乱流振動、風による電線横振れ、着氷雪による電線垂れ込み等の影響を取り除くことができる。従って、誤作動を防止でき、検知精度を向上できる。レベル設定部５に設けている可変抵抗（ボリューム）を調整し、規定値を設定するようにしているので、状況に応じた規定値の設定が行え、そのため検知精度を向上できる。電源部Ｄを本体部Ｈの近傍の鉄塔に取付けているので、地上から電源を供給するような場合に比較して、取付作業が容易となる。フラッシュランプ８が下方を向いているので、ギャロッピング現象の発生の有無を地上から視覚により確認でき、ヘリコプターを使用して空中から確認するよような場合に比較して、使用上の利便性が向上する。フラッシュランプ８が点滅表示を行うので、視覚性が向上し、確認作業を容易、かつ確実に行えることになる。フラッシュランプ８の表示状態が維持されるので、長期間の非日射により、フラッシュランプ８が非表示状態になっても、日射により太陽電池２１が復帰すると、フラッシュランプ８は再点灯する。このようにフラッシュランプ８は、リセットしない限り消燈しないので、巡視等で鉄塔下に出向いた際、肉眼で簡単に確認できる。 In the above-described abnormal vibration detection mechanism of the overhead power transmission line, the main body H housed in the single casing 12 is collectively attached to the interlocking portion 31 with the overhead power transmission line in the tension device 30 that supports the overhead power transmission line. Therefore, the installation work efficiency at a high place can be improved. Further, since the gyro sensor 1 detects only the angular velocity in the aimed direction, it is not necessary to make a mistake in the direction, so that the mounting operation can be facilitated. In addition, since the gyro sensor 1 is used to detect only the angular velocity in the target direction, the angular velocity in the torsional direction caused by the wind or the like can be excluded, malfunctioning can be prevented, and detection accuracy can be improved. Furthermore, since vibrations in a specific frequency band of 0.1 Hz to 1.0 Hz are mainly extracted, it is possible to remove influences such as light wind vibration, turbulent vibration, electric wire lateral vibration due to wind, and electric wire drooping due to icing snow. Therefore, malfunction can be prevented and detection accuracy can be improved. Since the variable resistor (volume) provided in the level setting unit 5 is adjusted to set the specified value, the specified value can be set according to the situation, and therefore the detection accuracy can be improved. Since the power supply part D is attached to the steel tower in the vicinity of the main body part H, the attachment work becomes easier as compared with the case where power is supplied from the ground. Since the flash lamp 8 faces downward, it is possible to visually confirm the occurrence of galloping phenomenon from the ground, and the convenience in use is improved compared to the case of checking from the air using a helicopter. To do. Since the flash lamp 8 blinks, the visibility is improved, and the confirmation work can be performed easily and reliably. Since the display state of the flash lamp 8 is maintained, even if the flash lamp 8 is in a non-display state due to long-term non-sunlight, the flash lamp 8 is turned on again when the solar cell 21 is restored by solar radiation. Thus, the flash lamp 8 is not extinguished unless it is reset, so that it can be easily confirmed with the naked eye when going to the bottom of the steel tower during inspection.
以上にこの発明の架空送電線の異常振動検知機構の具体的な実施の形態について説明をしたが、この発明の架空送電線の異常振動検知機構は、上記実施の形態に限られるものではなく、種々変更して実施することが可能である。例えば、上記においては、異常振動の例として、ギャロッピング現象を取り上げているが、スリートジャンプ等の異常振動に対しても、上記同様の手法によって対処可能である。また、上記においては、表示手段（特に、フラッシュランプ８）が下方を向くように構成されているが、上方に向いた表示手段（特に、フラッシュランプ８）を付加してもよい。すなわち、積雪の激しい場所では、一冬中、入山不可能な場合があり、そのためこのような場所では、ヘリコプター巡視にての確認を可能とするためである。また、リモコン装置を使用して、地上からフラッシュランプ８をリセットできるような機能を追加してもよい。さらに、感度の異なる比較回路４を複数個配置すると共に、それぞれにカウンタを付設して、閾値を超えた回数をカウントすることで、ギャロッピング現象を検知するようにしてもよい。 Although the specific embodiment of the abnormal vibration detection mechanism of the overhead power transmission line of the present invention has been described above, the abnormal vibration detection mechanism of the overhead power transmission line of the present invention is not limited to the above embodiment, Various modifications can be made. For example, in the above, as an example of the abnormal vibration, but addresses the galloping phenomenon, against abnormal vibration such as Sri Tojanpu, Ru der manageable by the same method. In the above description, the display means (particularly, the flash lamp 8) is configured to face downward, but display means (particularly, the flash lamp 8) facing upward may be added. That is, in places with heavy snowfall, it may be impossible to enter the mountain during the winter, and in such places, it is possible to check with a helicopter patrol. In addition, a function that can reset the flash lamp 8 from the ground using a remote control device may be added. Further, the galloping phenomenon may be detected by arranging a plurality of comparison circuits 4 having different sensitivities and adding a counter to each of them to count the number of times the threshold value is exceeded.
１ ジャイロセンサ
２ ハイパスフィルタ
３ ローパスフィルタ
４ 比較回路
５ レベル設定部
８ フラッシュランプ
１０ ギャロッピング検知手段（異常振動検知手段）
１１ 表示手段
Ｈ 本体部
Ｄ 電源部
DESCRIPTION OF SYMBOLS 1 Gyro sensor 2 High pass filter 3 Low pass filter 4 Comparison circuit 5 Level setting part 8 Flash lamp 10 Galloping detection means (abnormal vibration detection means)
11 Display means H Body D Power supply
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| CN102288281A (en) * | 2011-06-25 | 2011-12-21 | 四川大学 | On-line monitoring device and method for breeze vibration of high-tension line based on vibration generation |
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| KR100803317B1 (en) | 2006-12-22 | 2008-02-13 | 한전케이디엔 주식회사 | Power Tower Hazard Diagnosis System |
| JP5121328B2 (en) * | 2007-06-25 | 2013-01-16 | 中国電力株式会社 | Abnormal overheat indicator |
| JP5551974B2 (en) * | 2010-06-17 | 2014-07-16 | 一般財団法人電力中央研究所 | Elastic support method and elastic support device for partial model of transmission line |
| JP2012139066A (en) * | 2010-12-27 | 2012-07-19 | Asahi Glass Co Ltd | Overhead cable monitoring system |
| CN103674229B (en) * | 2013-11-19 | 2015-07-08 | 河北省电力勘测设计研究院 | Conductive wire galloping online monitoring system based on acoustic surface wave technology |
| CN107764491B (en) * | 2017-09-21 | 2019-05-21 | 国网河南省电力公司电力科学研究院 | A simulation test method for interphase spacer bar galloping bearing based on load equivalence |
| KR102046114B1 (en) * | 2018-12-14 | 2019-12-02 | 주식회사 천아엔지니어링 | Transmission power distribution cable protection facility |
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| CN102288281A (en) * | 2011-06-25 | 2011-12-21 | 四川大学 | On-line monitoring device and method for breeze vibration of high-tension line based on vibration generation |
| CN102288281B (en) * | 2011-06-25 | 2012-08-22 | 四川大学 | On-line monitoring device and method for breeze vibration of high-tension line based on vibration generation |
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