JPH07301557A - Galloping detector - Google Patents
Galloping detectorInfo
- Publication number
- JPH07301557A JPH07301557A JP9457194A JP9457194A JPH07301557A JP H07301557 A JPH07301557 A JP H07301557A JP 9457194 A JP9457194 A JP 9457194A JP 9457194 A JP9457194 A JP 9457194A JP H07301557 A JPH07301557 A JP H07301557A
- Authority
- JP
- Japan
- Prior art keywords
- transmission line
- power transmission
- overhead power
- galloping
- mode
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Abstract
(57)【要約】
【目的】 架空送電線のギャロッピング発生時に迅速か
つ適切に対処することができるギャロッピング検出装置
を提供する。
【構成】 架空送電線の張力および振れ角や風速、気温
等の外部環境状態を検出するセンサ群１と、該検出結果
を光ファイバケーブル３を介してリアルタイムで収集す
るコンピュータ７と、該収集した検出結果に基づき、張
力変動の周波数、振動モード、振幅を算出し、架空送電
線の振動モードおよび振幅軌跡を表示するコンピュータ
８とを設けた。
(57) [Abstract] [Purpose] To provide a galloping detection device capable of promptly and appropriately coping with the occurrence of galloping of an overhead power transmission line. [Structure] A group of sensors 1 for detecting the tension of the overhead power transmission line and external environmental conditions such as a deflection angle, wind speed, and temperature, a computer 7 for collecting the detection results in real time via an optical fiber cable 3, and the collected data. A computer 8 for calculating the frequency, vibration mode, and amplitude of the tension fluctuation based on the detection result and displaying the vibration mode and amplitude locus of the overhead power transmission line is provided.
Description
【０００１】[0001]
【産業上の利用分野】この発明は、例えば支持塔間の架
空送電線に発生するギャロッピングを検出することがで
きるギャロッピング検出装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a galloping detecting device capable of detecting galloping occurring in an overhead power transmission line between support towers.
【０００２】[0002]
【従来の技術】鉄塔等の支持塔間にわたって架設されて
いる架空送電線は、自然の風や氷雪の付着・脱落等が原
因となって振れを起こし、この振れが顕著になるとギャ
ロッピングと呼ばれる大振幅かつ低周波の振動に至る場
合がある。このギャロッピングが発生すると、電線間の
接触による短絡事故など極めて危険な事態を引き起こす
こととなるため、これを早期に発見し、迅速に対処する
ことが必要となる。2. Description of the Related Art Overhead power transmission lines erected between support towers such as steel towers sway due to natural wind and the adhesion and drop-off of snow and snow. It may result in amplitude and low frequency vibration. When this galloping occurs, an extremely dangerous situation such as a short-circuit accident due to contact between electric wires is caused, and therefore it is necessary to detect this early and deal with it promptly.
【０００３】従来、こうした架空送電線のギャロッピン
グを観測する場合には、ビデオを設置して監視を行った
り、あるいは張力計や振れ角計を架空送電線に取り付け
て計測データを記録する、という方法がとられている。Conventionally, when observing the galloping of such an overhead power transmission line, a video is installed for monitoring, or a tensiometer or a deflection angle meter is attached to the overhead power transmission line to record measurement data. Has been taken.
【０００４】[0004]
【発明が解決しようとする課題】ところが、ビデオを用
いた観測方法では、夜間における観測が不可能であり、
また、架空送電線が降雪や雪雲によって包まれることに
より観測できなくなることがある。また、張力計や振れ
角計を用いた方法では、単に計測データを記録するにと
どまり、実際にデータの解析が行われるのは１カ月〜数
カ月の後であり、状況をリアルタイムで把握することが
でなかった。すなわち、従来の方法では、時間帯や天候
等の外部条件の影響を受けることなく、リアルタイムで
状況を把握することができなかったため、ギャロッピン
グの発生に対して迅速かつ適切に対処することができな
いという問題があった。However, with the observation method using video, observation at night is impossible,
In addition, the overhead power line may become unobservable because it is covered with snow or snow clouds. Moreover, in the method using the tensiometer or the deflection angle meter, the measurement data is merely recorded, and the data is actually analyzed after one month to several months, and the situation can be grasped in real time. It wasn't. That is, in the conventional method, since the situation cannot be grasped in real time without being affected by external conditions such as time zone and weather, it is impossible to promptly and appropriately deal with the occurrence of galloping. There was a problem.
【０００５】この発明は、このような背景の下になされ
たもので、架空送電線のギャロッピング発生時に迅速か
つ適切に対処することができるギャロッピング検出装置
を提供することを目的としている。The present invention has been made under such a background, and an object thereof is to provide a galloping detecting device capable of promptly and appropriately coping with the occurrence of galloping of an overhead power transmission line.
【０００６】[0006]
【課題を解決するための手段】この発明は、上述した課
題を解決するために、支持塔間の架空送電線に発生する
ギャロッピング状態を検出する装置であって、前記架空
送電線の張力変動を検出する第１の検出手段と、前記架
空送電線の振れ角を検出する第２の検出手段と、前記第
１の検出手段の検出結果に基づき、張力変動の各モード
の周波数のうち卓越周波数が現れるモードを決定すると
ともに、該決定したモードの周波数を算出する第１の演
算手段と、前記第１の演算手段の演算結果と前記第２の
検出手段の検出結果とに基づき、前記架空送電線の各時
点における振幅変位を算出する第２の演算手段と、前記
第２の演算手段の演算結果に基づき、前記架空送電線の
振幅変位による軌跡を表示する表示手段とを具備するこ
とを特徴としている。In order to solve the above-mentioned problems, the present invention is a device for detecting a galloping state occurring in an overhead power transmission line between support towers, wherein tension fluctuations in the overhead power transmission line are detected. Based on the first detection means for detecting, the second detection means for detecting the deflection angle of the overhead power transmission line, and the detection result of the first detection means, the predominant frequency among the frequencies of each mode of tension fluctuation is The overhead transmission line is determined based on the first calculation means for determining the mode to appear and the frequency of the determined mode, and the calculation result of the first calculation means and the detection result of the second detection means. A second calculating means for calculating the amplitude displacement at each time point, and a display means for displaying a locus due to the amplitude displacement of the overhead power transmission line based on the calculation result of the second calculating means. I .
【０００７】[0007]
【作用】この発明によれば、第１の検出手段は、架空送
電線の張力変動を検出し、第２の検出手段は、架空送電
線の振れ角を検出する。そして、第１の演算手段は、第
１の検出手段の検出結果に基づき、張力変動の各モード
の周波数のうち卓越周波数が現れるモードを決定すると
ともに、該モードの周波数を算出し、第２の演算手段
は、第１の演算手段の演算結果と第２の検出手段の検出
結果とに基づき、架空送電線の各時点における振幅変位
を算出する。さらに、表示手段は、第２の演算手段の演
算結果に基づき、架空送電線の振幅変位による軌跡を表
示する。これにより、時間帯や天候等の外部条件の影響
を受けることなく、架空送電線に発生するギャロッピン
グをリアルタイムかつ的確に把握することができる。According to the present invention, the first detecting means detects the tension fluctuation of the overhead power transmission line, and the second detecting means detects the deflection angle of the overhead power transmission line. Then, the first calculation means determines, based on the detection result of the first detection means, a mode in which the dominant frequency appears among the frequencies of the tension fluctuation modes, calculates the frequency of the mode, and determines the second mode. The calculation means calculates the amplitude displacement of the overhead power transmission line at each time point based on the calculation result of the first calculation means and the detection result of the second detection means. Further, the display means displays the locus due to the amplitude displacement of the overhead power transmission line based on the calculation result of the second calculation means. As a result, galloping occurring in the overhead power transmission line can be accurately grasped in real time without being affected by external conditions such as time zone and weather.
【０００８】[0008]
【実施例】以下、図面を参照して、この発明の実施例に
ついて説明する。図１はこの発明の一実施例の構成を示
すブロック図である。この図において、１は架空送電線
（図示略）およびその近傍に設置される種々のセンサ
（以下、センサ群という）である。このセンサ群１は、
架空送電線の張力および上下・水平方向の振れ角や風
速、気温などの外部状態を検出し、各々の検出結果を電
気信号に変換してこれを出力する。Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention. In this figure, reference numeral 1 denotes an overhead power transmission line (not shown) and various sensors (hereinafter referred to as a sensor group) installed in the vicinity thereof. This sensor group 1
It detects the tension of overhead power lines and external conditions such as vertical and horizontal deflection angles, wind speed, and temperature, and converts each detection result into an electrical signal and outputs it.
【０００９】２は架空送電線の近傍に設置された光変調
器であり、センサ群１から出力される電気信号を光信号
に変換し、これを光ファイバケーブル３へ送出する。４
は地上側の監視局に設置された光電変換器であり、光変
調器２から光ファイバケーブル３を介して送信された光
信号を再び電気信号に変換する。この電気信号は、増幅
器５を介して増幅された後、Ａ／Ｄ（アナログ／ディジ
タル）変換器６によってディジタル信号に変換される。Reference numeral 2 is an optical modulator installed near the overhead power transmission line, which converts an electric signal output from the sensor group 1 into an optical signal and sends the optical signal to the optical fiber cable 3. Four
Is a photoelectric converter installed in a monitoring station on the ground side, and converts an optical signal transmitted from the optical modulator 2 via the optical fiber cable 3 into an electric signal again. This electric signal is amplified by the amplifier 5 and then converted into a digital signal by the A / D (analog / digital) converter 6.
【００１０】７，８は監視局内に設置されたコンピュー
タであり、コンピュータ７はデータ収集用として用いら
れ、コンピュータ８はデータ解析用として用いられる。
コンピュータ７は、Ａ／Ｄ変換器６から出力されるディ
ジタル信号を観測データとして取り込み、これらを内部
メモリ等の記憶装置に格納する。Reference numerals 7 and 8 denote computers installed in the monitoring station. The computer 7 is used for collecting data, and the computer 8 is used for analyzing data.
The computer 7 takes in the digital signals output from the A / D converter 6 as observation data and stores them in a storage device such as an internal memory.
【００１１】一方、コンピュータ８は、コンピュータ７
から供給される上記収集した各種観測データを取り込
み、これら観測データの解析処理を行う。そして、この
解析結果に基づき、架空送電線に発生するギャロッピン
グを図示しないディスプレイにグラフィック表示する。On the other hand, the computer 8 is the computer 7.
The above-mentioned collected various observation data supplied from the company are taken in, and the analysis processing of these observation data is performed. Then, based on the analysis result, the galloping occurring in the overhead power transmission line is graphically displayed on a display (not shown).
【００１２】次に、図２に示すフローチャートを参照
し、コンピュータ８が行う観測データの解析処理につい
て説明する。同図において、まずステップＳ１では、ト
リガー設定処理を行う。すなわち、ギャロッピング検出
のための解析処理を行う条件として、随時取り込まれる
張力変動、風速、気温等の各観測データを採用するか否
かを判断する際のしきい値を設定する。Next, with reference to the flow chart shown in FIG. 2, the observation data analysis processing performed by the computer 8 will be described. In the figure, first, in step S1, a trigger setting process is performed. That is, as a condition for performing an analysis process for galloping detection, a threshold value is set when it is determined whether or not to adopt each observation data such as tension fluctuation, wind speed, and temperature that is taken in at any time.
【００１３】次に、ステップＳ２では、各観測データの
取り込みを行う。ここで、取り込まれる観測データは、
張力、上下・水平方向の振れ角、風速、気温等である。
そして、ステップＳ３に進むと、上記ステップＳ２で取
り込んだ各観測データを上記ステップＳ１で設定した各
々のしきい値と比較し、それぞれの観測データについて
しきい値を越えているか否かを判断する。なお、張力に
ついては、その観測データの変動を表す張力変動を求
め、この値としきい値とを比較する。Next, in step S2, each observation data is fetched. Here, the observation data captured is
Tension, vertical / horizontal deflection angle, wind speed, temperature, etc.
Then, in step S3, each observation data acquired in step S2 is compared with each threshold value set in step S1 to determine whether each observation data exceeds the threshold value. . As for the tension, the tension fluctuation representing the fluctuation of the observation data is obtained, and this value is compared with the threshold value.
【００１４】ここで、各観測データがしきい値を越えな
い場合、ステップＳ３の判断結果は「Ｎｏ」となり、再
びステップＳ２に戻る。すなわちこの場合、各観測デー
タがギャロッピングが発生する程度に達していないもの
とみなし、再び観測データの取り込みを行う。Here, when each observation data does not exceed the threshold value, the determination result of step S3 is "No", and the process returns to step S2 again. That is, in this case, it is considered that each observation data has not reached the level at which galloping occurs, and the observation data is captured again.
【００１５】そして、各観測データがしきい値を越える
と、ステップＳ３の判断結果は「Ｙｅｓ」となり、ステ
ップＳ４に進む。ステップＳ４では、所定時間間隔にお
ける張力の観測データに基づき平均張力を算出する。ま
た、張力、風速、気温等の観測データに基づき、架空送
電線に付着しているものと推定される着雪重量を算出す
る。さらに、架空送電線の上下・水平方向における振れ
角の観測データに基づき、上下・水平間の振れ角の位相
差を求める。When each observation data exceeds the threshold value, the determination result of step S3 becomes "Yes", and the process proceeds to step S4. In step S4, the average tension is calculated based on the tension observation data at a predetermined time interval. In addition, the snow accretion weight estimated to be attached to the overhead power transmission line is calculated based on the observation data such as tension, wind speed, and temperature. Furthermore, the phase difference between the vertical and horizontal deflection angles is calculated based on the observation data of the vertical and horizontal deflection angles of the overhead transmission line.
【００１６】次に、ステップＳ５に進むと、架空送電線
を弦と見なしたときの基本周波数（すなわち、１次の振
動モードの固有振動数）ｆ1を算出する。ここで、架空
送電線を弦と見なした場合の各モードの固有振動数ｆn
は、次式（１）によって算出される。ただし、ｎはモー
ド数、ｌは鉄塔間の距離（この場合、鉄塔間の距離を架
空送電線の長さとみなしている。）、ｍは着雪重量を含
む架空送電線の重量、ｇは付加係数、Ｔは平均張力をそ
れぞれ示している。Next, in step S5, the fundamental frequency (ie, the natural frequency of the primary vibration mode) f 1 when the overhead power transmission line is regarded as a string is calculated. Here, the natural frequency f n of each mode when the overhead power transmission line is regarded as a string
Is calculated by the following equation (1). Here, n is the number of modes, l is the distance between the towers (in this case, the distance between the towers is regarded as the length of the overhead power transmission line), m is the weight of the overhead power transmission line including the snow accretion weight, and g is the addition. The coefficient and T indicate average tension, respectively.
【数１】 [Equation 1]
【００１７】次に、ステップＳ６に進むと、前述のステ
ップＳ３においてしきい値を越える張力変動の周期が連
続して現れる回数ｎとその間の経過時間τとを測定す
る。そして、ステップＳ７に進むと、上記ステップＳ６
で得られた測定結果の比ｎ／τと前述のステップＳ５で
算出した基本周波数ｆ1とを比較し、測定結果の比ｎ／
τが基本周波数ｆ1より大きいか否かを判断する。Next, in step S6, the number of times n in which tension fluctuation cycles exceeding the threshold value appear consecutively and the elapsed time τ therebetween are measured in step S3. Then, when the process proceeds to step S7, the above step S6
The ratio n / τ of the measurement results obtained in step S5 is compared with the fundamental frequency f 1 calculated in step S5, and the ratio n / τ of the measurement results is compared.
It is determined whether τ is larger than the fundamental frequency f 1 .
【００１８】ここで、測定結果の比ｎ／τが基本周波数
ｆ1より小さい場合、ステップＳ６の判断結果は「Ｎ
ｏ」となり、前述のステップＳ２に戻る。すなわちこの
場合、張力変動が大きいもののその周期が長いため、ギ
ャロッピングは起こり得ないものと見なし、再び観測デ
ータの取り込みを行う。Here, when the ratio n / τ of the measurement results is smaller than the fundamental frequency f 1 , the determination result of step S6 is "N
Then, the process returns to step S2. That is, in this case, although the fluctuation in tension is large, but the period is long, it is considered that galloping cannot occur, and the observation data is fetched again.
【００１９】一方、測定結果の比ｎ／τが基本周波数ｆ
1より大きい場合、ステップＳ７の判断結果は「Ｙｅ
ｓ」となり、ステップＳ８に進む。ステップＳ８では、
張力変動の観測データをＦＦＴ（高速フーリエ変換）に
よってスペクトル解析し、張力変動が最も顕著に現れる
卓越周波数ｆrを求める。On the other hand, the ratio n / τ of the measurement results is the fundamental frequency f
If it is greater than 1 , the determination result of step S7 is "Yes
s ”, and the process proceeds to step S8. In step S8,
The observed data of the tension fluctuation is spectrally analyzed by FFT (Fast Fourier Transform), and the dominant frequency f r at which the tension fluctuation appears most significantly is obtained.
【００２０】次に、ステップＳ９に進むと、架空送電線
の鉄塔間における弛み（弛度）を考慮したときの各モー
ドの固有振動数ｆncを算出する。ここで、まず弛度Ｄは
次式（２）によって算出される。ただし、ｌは鉄塔間の
距離、ｍは着雪重量を含む架空送電線の重量、ｑは付加
係数、Ｔは平均張力をそれぞれ示している。Next, in step S9, the natural frequency f nc of each mode is calculated in consideration of the slack (sagility) between the towers of the overhead power transmission line. Here, first, the sag D is calculated by the following equation (2). Here, 1 is the distance between the towers, m is the weight of the overhead power transmission line including the snow accretion weight, q is the additional coefficient, and T is the average tension.
【数２】 [Equation 2]
【００２１】そして、例えば１次乃至５次のモードの固
有振動数ｆ1c〜ｆ5cは、下式（３）〜（７）によって算
出される。ただし、ｌは鉄塔間の距離、ｍは着雪重量を
含む架空送電線の重量、ｇは付加係数、Ｔは平均張力、
γは弛度Ｄに応じて定まる係数をそれぞれ示している。Then, for example, the natural frequencies f 1c to f 5c of the first to fifth modes are calculated by the following equations (3) to (7). Here, 1 is the distance between the towers, m is the weight of the overhead power transmission line including the snow accretion weight, g is the additional coefficient, T is the average tension,
γ represents a coefficient determined according to the sag D.
【数３】 [Equation 3]
【数４】 [Equation 4]
【数５】 [Equation 5]
【数６】 [Equation 6]
【数７】 [Equation 7]
【００２２】なお、上式（４），（６）から、偶数のモ
ードにおいては、弛度Ｄを考慮した固有振動数ｆncは、
架空送電線を弦と見なしたときの固有振動数ｆnと一致
することが分かる。From the above equations (4) and (6), in an even mode, the natural frequency f nc considering the sag D is
It can be seen that this matches the natural frequency f n when the overhead power transmission line is regarded as a string.
【００２３】また、上記の計算では簡単のため弛度Ｄの
みを考慮した場合を示しているが、実際には架空送電線
の両端に碍子連が設置されていることから、この碍子連
の重量と長さとを加味した上で上記固有振動数ｆncを算
出する。これにより、さらに精度の高い固有振動数ｆnc
が得られることになる。In the above calculation, for the sake of simplicity, only the sag D is taken into consideration. However, since the insulator string is installed at both ends of the overhead power transmission line, the weight of the insulator string is actually set. And the length are taken into consideration, and the natural frequency f nc is calculated. As a result, the natural frequency f nc with higher accuracy can be obtained.
Will be obtained.
【００２４】次に、ステップＳ１０では、上記ステップ
Ｓ９で算出した各モードの固有振動数ｆncを下式
（８），（９）によって張力変動の周波数ｆntに変換す
る。ここで、式（８）は奇数モードにおける張力変動
を、式（９）は偶数モードにおける張力変動をそれぞれ
示している。これらの式（８），（９）において、ΔＴ
ｏ，ΔＴｅは張力変動、Ａ1〜Ａ3は係数、ωは固有角周
波数、ｔは時間をそれぞれ示している。Next, in step S10, the natural frequency f nc of each mode calculated in step S9 is converted into the frequency f nt of tension fluctuation by the following equations (8) and (9). Here, the equation (8) shows the tension variation in the odd mode, and the equation (9) shows the tension variation in the even mode. In these equations (8) and (9), ΔT
o and ΔTe are tension fluctuations, A 1 to A 3 are coefficients, ω is a natural angular frequency, and t is time.
【数８】 [Equation 8]
【数９】 [Equation 9]
【００２５】そして、ステップＳ１１に進むと、上記ス
テップＳ９で算出した各モードの張力変動の周波数ｆnt
と、前述のステップＳ８で求めた卓越周波数ｆrとを比
較する。そして、ステップＳ１２では、上記ステップＳ
１１の比較結果に基づき、各モードの張力変動の周波数
ｆntのうち、卓越周波数ｆrが現れるモードと同一のモ
ードの張力変動の周波数を選択する。これにより、弛度
および碍子連を考慮した場合の架空送電線の張力変動の
周波数のうち、最も振動が顕著に現れるモードとその周
波数が採用される。Then, when the operation proceeds to step S11, the frequency f nt of the tension fluctuation of each mode calculated in step S9 is calculated.
And the predominant frequency f r obtained in step S8 described above are compared. Then, in step S12, the above step S
Based on the 11 comparison results among the frequency f nt tension fluctuations in each mode, to select the frequency of the tension fluctuation of the same mode as the mode to the dominant frequency f r appears. As a result, among the frequencies of the tension fluctuation of the overhead power transmission line in which the sag and the insulator string are taken into consideration, the mode in which the vibration is most prominent and the frequency thereof are adopted.
【００２６】次に、ステップＳ１３に進むと、上記ステ
ップＳ１２で採用したモードにおける架空送電線の上下
・水平方向の振幅Ａ，Ｂを、上下・水平方向の振れ角と
上下・水平間の振れ角の位相差とを用いて算出する。こ
こで、例えば採用されたモードが偶数モードの場合、架
空送電線の上下方向の振幅Ａは下式（１０）によって算
出される。ただし、ΔＴｅは上式（９）によって与えら
れる張力変動、ｎはモード数、φωは上下・水平間の振
れ角の位相差、ｋは上下・水平方向の振幅の比Ｂ／Ａ、
πは円周率、ｌは鉄塔間の距離、Ｌ0は電線実長、Ｆは
等価弾性力をそれぞれ示しており、これらは全て既知の
値である。Next, in step S13, the vertical and horizontal amplitudes A and B of the overhead transmission line in the mode adopted in step S12 are set to the vertical and horizontal swing angles and the vertical and horizontal swing angles. It is calculated using the phase difference and. Here, for example, when the adopted mode is an even mode, the vertical amplitude A of the overhead power transmission line is calculated by the following equation (10). Here, ΔTe is the tension fluctuation given by the above equation (9), n is the number of modes, φω is the phase difference between the vertical and horizontal deflection angles, k is the vertical / horizontal amplitude ratio B / A,
π is the circular constant, l is the distance between the steel towers, L 0 is the actual wire length, and F is the equivalent elastic force. These are all known values.
【数１０】 そして、上下方向の振幅Ａが求まれば、Ｂ＝ｋＡより、
水平方向の振幅Ｂが求められる。[Equation 10] Then, if the vertical amplitude A is obtained, from B = kA,
The horizontal amplitude B is determined.
【００２７】一方、採用されたモードが奇数モードの場
合には、上式（８）によって与えられる張力変動ΔＴｏ
に基づいて上記と同様に上下・水平方向の振幅Ａ，Ｂを
算出するが、ここでは簡単のため説明を省略する。On the other hand, when the adopted mode is an odd mode, the tension fluctuation ΔTo given by the above equation (8) is obtained.
Based on the above, the amplitudes A and B in the vertical and horizontal directions are calculated in the same manner as above, but the description is omitted here for simplicity.
【００２８】次に、ステップＳ１４に進むと、前述のス
テップＳ１２で採用したモードにおける張力変動の周波
数と、上記ステップＳ１３で算出した上下・水平方向の
振幅Ａ，Ｂとに基づき、ギャロッピングの状態をグラフ
ィック表示する。例えば図３（ａ）に示すように、架空
送電線のギャロッピングのモードを表示するとともに、
図３（ｂ）に示すように、架空送電線の振幅の軌跡を表
示する。Next, in step S14, the galloping state is determined based on the frequency of tension fluctuation in the mode adopted in step S12 and the vertical and horizontal amplitudes A and B calculated in step S13. Display graphic. For example, as shown in FIG. 3A, while displaying the mode of galloping of the overhead transmission line,
As shown in FIG. 3B, the locus of the amplitude of the overhead power transmission line is displayed.
【００２９】以上説明したように、本実施例によれば、
架空送電線の張力変動の振動数および上下・水平方向の
振れ角に基づき、架空送電線の振幅を求め、リアルタイ
ムで振動のモードおよび振幅の軌跡を表示することがで
きる。これにより、架空送電線に発生するギャロッピン
グの状態をリアルタイムかつ的確に把握することがで
き、ギャロッピング発生時に迅速かつ適切に対処するこ
とができる。As described above, according to this embodiment,
It is possible to obtain the amplitude of the overhead power transmission line based on the vibration frequency of tension fluctuation of the overhead power transmission line and the deflection angles in the vertical and horizontal directions, and display the mode of vibration and the locus of the amplitude in real time. As a result, the state of galloping occurring on the overhead power transmission line can be accurately grasped in real time, and when galloping occurs, it can be dealt with promptly and appropriately.
【００３０】また、本実施例では、風速や気温等の外部
環境によって推定される着雪重量を加味した計算を行う
ので、精度の高いギャロッピング検出を行うことができ
る。また、架空送電線の弛度と該送電線の両端に設置さ
れる碍子連の長さおよび重量とを加味した計算を行うこ
とにより、さらに精度の高いギャロッピング検出を行う
ことができる。また、本実施例では、各観測データの収
集処理とこれに基づく解析処理とを２つのコンピュータ
７，８によって並行して行うことができるので、データ
収集処理を中断することなく解析処理を進めることがで
き、観測データの欠落が生じることがない。Further, in this embodiment, since the calculation is performed in consideration of the snow accretion weight estimated by the external environment such as wind speed and temperature, galloping detection can be performed with high accuracy. Further, by performing the calculation in consideration of the sag of the overhead power transmission line and the length and weight of the insulator string installed at both ends of the power transmission line, galloping detection with higher accuracy can be performed. Further, in this embodiment, since the collection processing of each observation data and the analysis processing based on this can be performed in parallel by the two computers 7 and 8, the analysis processing can be advanced without interrupting the data collection processing. The observation data will not be lost.
【００３１】なお、本実施例では、上下・水平の２方向
について振れ角を検出するようにしたが、これに加え、
架空送電線の軸心の周りの回転をも検出し、解析を行う
ようにしてもよい。これにより、さらに高精度なギャロ
ッピング検出を行うことができる。In this embodiment, the deflection angle is detected in two directions, vertical and horizontal, but in addition to this, in addition to this,
The rotation around the axis of the overhead power transmission line may also be detected and analyzed. As a result, it is possible to perform galloping detection with higher accuracy.
【００３２】また、本実施例では、架空送電線に発生す
るギャロッピングを例として説明したが、これに限ら
ず、例えば釣り橋など大振幅かつ低周波の弦振動が起こ
り得るものであればその他の構造物等に適用することも
可能である。Further, in the present embodiment, the galloping which occurs in the overhead power transmission line has been described as an example, but the present invention is not limited to this. It can also be applied to structures and the like.
【００３３】[0033]
【発明の効果】以上説明したように、この発明によれ
ば、時間帯や天候等の外部条件の影響を受けることな
く、架空送電線に発生するギャロッピングの状態をリア
ルタイムかつ的確に把握することができるので、ギャロ
ッピング発生時に迅速かつ適切に対処することができる
という効果が得られる。As described above, according to the present invention, the galloping state occurring in the overhead power transmission line can be accurately grasped in real time without being affected by external conditions such as time zone and weather. As a result, it is possible to obtain an effect that it is possible to quickly and appropriately deal with the occurrence of galloping.
【図１】 この発明の一実施例の構成を示すブロック図
である。FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention.
【図２】 同実施例による解析処理を説明するフローチ
ャートである。FIG. 2 is a flowchart illustrating an analysis process according to the embodiment.
【図３】 同実施例におけるギャロッピングの状態のグ
ラフィック表示例を示す図であり、（ａ）はモードの表
示例を、（ｂ）は振幅の軌跡の表示例を示している。3A and 3B are diagrams showing a graphic display example of a galloping state in the embodiment, FIG. 3A showing a mode display example, and FIG. 3B showing an amplitude locus display example.
１…センサ群、２…光変調器、３…光ファイバケーブ
ル、４…光電変換器、５…増幅器、６…Ａ／Ｄ変換器、
７，８…コンピュータ。1 ... Sensor group, 2 ... Optical modulator, 3 ... Optical fiber cable, 4 ... Photoelectric converter, 5 ... Amplifier, 6 ... A / D converter,
7, 8 ... Computer.
Claims (1)
ッピングを検出する装置であって、 前記架空送電線の張力変動を検出する第１の検出手段
と、 前記架空送電線の振れ角を検出する第２の検出手段と、 前記第１の検出手段の検出結果に基づき、張力変動の各
モードの周波数のうち卓越周波数が現れるモードを決定
するとともに、該決定したモードの周波数を算出する第
１の演算手段と、 前記第１の演算手段の演算結果と前記第２の検出手段の
検出結果とに基づき、前記架空送電線の各時点における
振幅変位を算出する第２の演算手段と、 前記第２の演算手段の演算結果に基づき、前記架空送電
線の振幅変位による軌跡を表示する表示手段とを具備す
ることを特徴とするギャロッピング検出装置。1. An apparatus for detecting galloping occurring in an overhead power transmission line between support towers, comprising: first detecting means for detecting a tension fluctuation of the overhead power transmission line; and a deflection angle of the overhead power transmission line. And a second detecting unit that determines the mode in which the dominant frequency appears among the frequencies of each mode of tension fluctuation, and calculates the frequency of the determined mode based on the detection result of the first detecting unit. A second calculating means for calculating an amplitude displacement of the overhead power transmission line at each time point based on a calculation result of the first calculating means and a detection result of the second detecting means; 2. A galloping detection device, comprising: a display unit that displays a locus due to an amplitude displacement of the overhead power transmission line based on a calculation result of the calculation unit 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP09457194A JP3217205B2 (en) | 1994-05-06 | 1994-05-06 | Galloping detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP09457194A JP3217205B2 (en) | 1994-05-06 | 1994-05-06 | Galloping detection device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07301557A true JPH07301557A (en) | 1995-11-14 |
| JP3217205B2 JP3217205B2 (en) | 2001-10-09 |
Family
ID=14113998
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP09457194A Expired - Fee Related JP3217205B2 (en) | 1994-05-06 | 1994-05-06 | Galloping detection device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3217205B2 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007145518A (en) * | 2005-11-29 | 2007-06-14 | Chugoku Electric Power Co Inc:The | Electric wire contact avoiding device |
| KR100936543B1 (en) * | 2007-11-16 | 2010-01-13 | 현대중공업 주식회사 | Monitoring sensor for transmission line and remote monitoring facility for transmission line with same |
| CN103674229A (en) * | 2013-11-19 | 2014-03-26 | 河北省电力勘测设计研究院 | Conductive wire galloping online monitoring system based on acoustic surface wave technology |
| JP2014199982A (en) * | 2013-03-29 | 2014-10-23 | 株式会社関電工 | Power transmission line monitoring/reporting system |
| CN104848854A (en) * | 2015-05-22 | 2015-08-19 | 国网河南省电力公司电力科学研究院 | Power transmission line waving track measuring method based on light curtain sensor |
| CN104933403A (en) * | 2015-05-18 | 2015-09-23 | 西安工程大学 | Method for monitoring conductor galloping based on spacer recognition |
| JP2016099664A (en) * | 2014-11-18 | 2016-05-30 | 東北電力株式会社 | System for supporting design of steel tower erection |
| JP2018084474A (en) * | 2016-11-24 | 2018-05-31 | 住友電気工業株式会社 | Electric wire monitoring system |
| CN108333472A (en) * | 2018-01-24 | 2018-07-27 | 江阴众和电力仪表有限公司 | Contact net holder loosens intelligent monitoring device, on-line monitoring system and its method |
| CN112161653A (en) * | 2020-09-07 | 2021-01-01 | 南方电网科学研究院有限责任公司 | Device and method for measuring wind resistance coefficient of overhead transmission wire |
| CN112179476A (en) * | 2020-10-10 | 2021-01-05 | 国网江西省电力有限公司信息通信分公司 | A sensor for measuring the galloping of transmission lines |
| CN112197858A (en) * | 2020-10-29 | 2021-01-08 | 北京国网富达科技发展有限责任公司 | Galloping detector suitable for extra-high voltage wire |
| CN114166337A (en) * | 2021-12-06 | 2022-03-11 | 北京国网富达科技发展有限责任公司 | Six-degree-of-freedom wire galloping monitoring method, system and device |
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| WO2023004085A1 (en) * | 2021-07-22 | 2023-01-26 | Nec Laboratories America, Inc. | Galloping monitoring of overhead transmission lines using distributed fiber optic sensing |
| JP2023050257A (en) * | 2021-09-30 | 2023-04-11 | 富士通株式会社 | Abnormality detection program, abnormality detector, and method for detecting abnormality |
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-
1994
- 1994-05-06 JP JP09457194A patent/JP3217205B2/en not_active Expired - Fee Related
Cited By (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007145518A (en) * | 2005-11-29 | 2007-06-14 | Chugoku Electric Power Co Inc:The | Electric wire contact avoiding device |
| KR100936543B1 (en) * | 2007-11-16 | 2010-01-13 | 현대중공업 주식회사 | Monitoring sensor for transmission line and remote monitoring facility for transmission line with same |
| JP2014199982A (en) * | 2013-03-29 | 2014-10-23 | 株式会社関電工 | Power transmission line monitoring/reporting system |
| CN103674229A (en) * | 2013-11-19 | 2014-03-26 | 河北省电力勘测设计研究院 | Conductive wire galloping online monitoring system based on acoustic surface wave technology |
| JP2016099664A (en) * | 2014-11-18 | 2016-05-30 | 東北電力株式会社 | System for supporting design of steel tower erection |
| CN104933403A (en) * | 2015-05-18 | 2015-09-23 | 西安工程大学 | Method for monitoring conductor galloping based on spacer recognition |
| CN104933403B (en) * | 2015-05-18 | 2018-05-18 | 西安工程大学 | A kind of monitoring method of the conductor galloping based on conductor spacer identification |
| CN104848854A (en) * | 2015-05-22 | 2015-08-19 | 国网河南省电力公司电力科学研究院 | Power transmission line waving track measuring method based on light curtain sensor |
| CN104848854B (en) * | 2015-05-22 | 2017-11-28 | 国网河南省电力公司电力科学研究院 | Transmission line galloping trajectory measurement method based on picking sensor |
| JP2018084474A (en) * | 2016-11-24 | 2018-05-31 | 住友電気工業株式会社 | Electric wire monitoring system |
| CN108333472A (en) * | 2018-01-24 | 2018-07-27 | 江阴众和电力仪表有限公司 | Contact net holder loosens intelligent monitoring device, on-line monitoring system and its method |
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| CN112161653A (en) * | 2020-09-07 | 2021-01-01 | 南方电网科学研究院有限责任公司 | Device and method for measuring wind resistance coefficient of overhead transmission wire |
| CN112179476A (en) * | 2020-10-10 | 2021-01-05 | 国网江西省电力有限公司信息通信分公司 | A sensor for measuring the galloping of transmission lines |
| CN112197858A (en) * | 2020-10-29 | 2021-01-08 | 北京国网富达科技发展有限责任公司 | Galloping detector suitable for extra-high voltage wire |
| WO2023004085A1 (en) * | 2021-07-22 | 2023-01-26 | Nec Laboratories America, Inc. | Galloping monitoring of overhead transmission lines using distributed fiber optic sensing |
| JP2023050257A (en) * | 2021-09-30 | 2023-04-11 | 富士通株式会社 | Abnormality detection program, abnormality detector, and method for detecting abnormality |
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