JPS59230172A - Detecting method of deterioration of lightning arrester - Google Patents
Detecting method of deterioration of lightning arresterInfo
- Publication number
- JPS59230172A JPS59230172A JP10694683A JP10694683A JPS59230172A JP S59230172 A JPS59230172 A JP S59230172A JP 10694683 A JP10694683 A JP 10694683A JP 10694683 A JP10694683 A JP 10694683A JP S59230172 A JPS59230172 A JP S59230172A
- Authority
- JP
- Japan
- Prior art keywords
- lightning arrester
- deterioration
- characteristic element
- temperature
- temperature difference
- 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.)
- Pending
Links
Landscapes
- Testing Electric Properties And Detecting Electric Faults (AREA)
- Thermistors And Varistors (AREA)
- Protection Of Static Devices (AREA)
Abstract
Description
【発明の詳細な説明】
この発明は、避雷器劣化検出方法に関するものであり、
とりわけ、非直線抵抗特性の優れた非直線抵抗体を特性
要素とした避雷器の劣化検出方法に関するものである。[Detailed Description of the Invention] The present invention relates to a lightning arrester deterioration detection method,
In particular, the present invention relates to a method for detecting deterioration of a lightning arrester using a non-linear resistor having excellent non-linear resistance characteristics as a characteristic element.
電力系統に発生する異常電圧の抑制のため、避雷器が使
用されるが、この避雷器の特性要素として酸化亜鉛を主
成分とした金属酸化物の焼結体が使用されている。この
酸化亜鉛素子は、電圧非直線性に優れるため直列ギャッ
プを必要とせず、異常電圧抑制後にも電源からの続流は
流れない利点を有する。かよ５な直列ギャップのない酸
化亜鉛形の避雷器では、特性素子に系統常規対地電圧が
直接課電される構造であるため、特性素子は徐々に劣化
下る。第１図は一定電圧課電時の従来の特性素子の漏れ
電流の経時変化の一例を示し、長時間課電後には漏れ電
流は増大し、事後には、熱暴走から避雷器が熱破壊する
ことがあり得る。このような電流の変化は、周囲温度を
画数℃というような加速試験条件で確認することができ
る。Surge arresters are used to suppress abnormal voltages occurring in power systems, and a sintered body of metal oxide containing zinc oxide as a main component is used as a characteristic element of this lightning arrester. Since this zinc oxide element has excellent voltage nonlinearity, it does not require a series gap, and has the advantage that no follow-on current from the power supply flows even after abnormal voltage suppression. In a zinc oxide type lightning arrester without a large series gap, the characteristic element gradually deteriorates because the system normal ground voltage is directly applied to the characteristic element. Figure 1 shows an example of the change over time in the leakage current of a conventional characteristic element when a constant voltage is applied.The leakage current increases after a long period of voltage application, and after the fact, the arrester is thermally destroyed due to thermal runaway. is possible. Such changes in current can be confirmed under accelerated test conditions such as an ambient temperature of several degrees Celsius.
従来、訓電劣化による避雷器の寿命は、通常百年程度に
設定されるが、万一の事態に備え、定期的に漏れ電流の
測定を行い、その経時変化を監視していた。第２図は、
漏れ電流の測定のための従来の回路で、避雷器ｌの低圧
側に接続された保護スイッチコ付きの電流言４３かもな
り、常時閉のスイッチコを開にして測定していた。Conventionally, the lifespan of lightning arresters due to deterioration due to power training is usually set at about 100 years, but in preparation for an emergency, the leakage current was regularly measured and changes over time were monitored. Figure 2 shows
In a conventional circuit for measuring leakage current, a current source 43 with a protective switch connected to the low-voltage side of the lightning arrester 1 is used, and the normally closed switch is opened for measurement.
従来は、以上のような方法で漏れ電流を測定−避雷器ｌ
の性能をチェックしていたが、定期的に行うため、点検
期間の中間における信頼性が低下すること、測定のため
の作業が面倒であるなどの欠点があった。Conventionally, leakage current was measured using the method described above - lightning arrester l
However, since the performance was checked periodically, there were drawbacks such as a decrease in reliability in the middle of the inspection period and the troublesome work required for measurement.
この発明は、上述のような従来の欠点を解消するために
なされたもので、特性要素の温度と特性要素周辺の温度
との差を検出し、温度差により避雷器の劣化を検出する
避雷器劣化検出方法を提供することを目的と千るもので
ある。This invention was made in order to eliminate the above-mentioned conventional drawbacks.This invention detects the difference between the temperature of a characteristic element and the temperature around the characteristic element, and detects the deterioration of the lightning arrester based on the temperature difference. There are thousands of ways to do this.
また、この発明の目的は、避雷器と接地間に避雷器のも
のと同種の検出片を接続し、この検出片と周辺との温度
差により避雷器の劣化を検出する避雷器劣化検出方法を
提供することである。Another object of the present invention is to provide a method for detecting deterioration of a surge arrester, which connects a detection piece of the same type as that of the lightning arrester between the surge arrester and the ground, and detects deterioration of the surge arrester based on the temperature difference between the detection piece and the surrounding area. be.
以下、図面を用いてこの発明を説明する。第３図は、酸
化亜鉛素子を特性要素とした避雷器の熱バランスを示し
、図において、避雷器の発熱特性Ｐは、特性素子の温度
に対して指数関数的に増大するが、避雷器の放熱特性Ｑ
は、はぼ素子の温度と周囲温度Ｔ。との温度差に比例千
〇。ＰとＱとの交点Ａがこの避雷器の熱安定点であり、
特性素子の温度はこの交点Ａに対応する温度ＴＡ に保
たれる。ここで、このときの特性素子温度と周囲温度と
の温度差（ＴＡ−Ｔｏ）に着目すると、劣化のない避雷
器の場合、／、−！；”Ｃ程度の温度差であり、周囲温
度Ｔ。が多少変化しても、この温度差はほとんど変化し
ない。The present invention will be explained below using the drawings. Figure 3 shows the heat balance of a surge arrester with a zinc oxide element as a characteristic element. In the figure, the heat generation characteristic P of the surge arrester increases exponentially with the temperature of the characteristic element, but the heat radiation characteristic Q
are the temperature of the element and the ambient temperature T. 1,000 proportional to the temperature difference between The intersection A of P and Q is the thermal stability point of this arrester,
The temperature of the characteristic element is maintained at a temperature TA corresponding to this intersection point A. Now, focusing on the temperature difference (TA-To) between the characteristic element temperature and the ambient temperature at this time, in the case of a lightning arrester without deterioration, /, -! The temperature difference is about "C", and even if the ambient temperature T changes somewhat, this temperature difference hardly changes.
しかし、特性素子が長期課電その他の理由により劣化す
ると、避雷器の発熱特性は曲線Ｐから曲線Ｐ１ へと移
動する。このように発熱特性が変化すると、それに伴っ
て交点はＡからＡ１ へ移動し、特性素子温度と周囲温
度との温度差も（ＴＡ’−Ｔｏ）から（Ｔ’−Ｔ）へと
太き（なる。このことから、特Ａ Ｏ
性素子温度と周囲温度との温度差を測定することにより
、避雷器の劣化を検出することができる。However, when the characteristic elements deteriorate due to long-term energization or other reasons, the heat generation characteristics of the arrester shift from curve P to curve P1. When the heat generation characteristics change in this way, the intersection point moves from A to A1, and the temperature difference between the characteristic element temperature and the ambient temperature also increases from (TA'-To) to (T'-T). From this, deterioration of the lightning arrester can be detected by measuring the temperature difference between the specific A O element temperature and the ambient temperature.
この発明は、かかる原理に基（ものである。This invention is based on this principle.
次に、この発明の一実施例について笛り図を参照して説
明する。図において、避雷器ｌ は、酸化亜鉛でなる特
性素子φ、フランジ付き碍管Ｓ１上・下部の止め板６．
り、固定金具ざ、９から構成されている。特性素子ヶの
下端Ｆａの温度および、碍管Ｓ内で特性要素りの周囲温
度の測定点ｌＯの温度を、熱電対／／、／コで測定でき
るように、下部の止め板７には絶縁引き出し部７ａを設
ける。熱電対／／、／２で測定した温度は温度差検出装
置１３により温度差を検出し、定められた以上の温度差
になったとき、劣化表示装置ｌグを動作させて避雷器ｌ
の劣化を表示させるようにする。ここで、外気に面し
た周囲温度は、気温、日射等の外部要因により急変する
ことが多く、誤動作し易いため、周囲温度の測定点１０
は碍管Ｓの内部とする。この場合、特性累子グの温度が
直接測定点ｌθに伝わらないような手段を講じることに
より、イ１１１定点ｌθの温度は十分周囲温度とみなし
得る。このように丁れば、特性素子グとその周辺との温
度差を十分な精度で測定でき、避雷器ｌの劣化を検出て
ることができる。Next, an embodiment of the present invention will be described with reference to a flute diagram. In the figure, the lightning arrester l includes a characteristic element φ made of zinc oxide, stop plates 6 and 6 on the upper and lower sides of the flanged insulator tube S1.
It consists of a fixing metal fitting 9. The lower stop plate 7 has an insulated drawer so that the temperature at the lower end Fa of the characteristic element and the temperature at the measurement point lO of the ambient temperature of the characteristic element in the insulator tube S can be measured with thermocouples // and /. A section 7a is provided. The temperature difference detected by the temperature difference detection device 13 detects the temperature measured by the thermocouple //, /2.
to display the deterioration of Here, the ambient temperature facing the outside air often changes suddenly due to external factors such as air temperature and solar radiation, and is prone to malfunction.
is the inside of the insulator tube S. In this case, by taking measures to prevent the temperature of the characteristic curve from being directly transmitted to the measurement point lθ, the temperature at the fixed point lθ in 111 can be considered to be sufficiently the ambient temperature. If arranged in this manner, the temperature difference between the characteristic element G and its surroundings can be measured with sufficient accuracy, and deterioration of the lightning arrester L can be detected.
次に、第５図により他の実施例について説明する。避雷
器／の下部の止め板７と接地との間に、容器ｉｓに入れ
た草体の特性素子でなる検出片１６を電気的に接続する
。この検出片／６は、避雷器ｌの特性素子ダと同種のも
のであるが、避雷器ｌの制限電圧が上昇しないよう、そ
の厚さはできるだけ薄いものが望ましい。このように丁
れば、検出片／６を、避雷器ｌの一部とみな丁ことかで
き、検出片ｌ乙の下面／りの温度と、容器ｌＳ内であっ
て周囲温度の測定点／ｌの温度を、第一の実施例と同様
に熱電対１１，１コにより測定する。Next, another embodiment will be described with reference to FIG. A detection piece 16 made of a grass characteristic element placed in a container is is electrically connected between the stop plate 7 at the bottom of the lightning arrester and the ground. This detection piece /6 is of the same type as the characteristic element DA of the lightning arrester 1, but it is desirable that its thickness be as thin as possible so that the limit voltage of the lightning arrester 1 does not increase. When installed in this way, the detection piece /6 can be regarded as a part of the lightning arrester l, and the temperature at the bottom surface of the detection piece lB and the ambient temperature measurement point /l inside the container IS can be determined. The temperature is measured using thermocouples 11 and 1 in the same manner as in the first embodiment.
このように、避雷器／の外部に設けた検出片ｌ乙の温度
とその周辺温度とのｆＩｙＬ度差を測定しても、開催Ｖ
Ｃ避雷器の劣化を検出することができる。In this way, even if you measure the difference in degrees between the temperature of the detection piece L installed outside the lightning arrester and the surrounding temperature,
Deterioration of C lightning arrester can be detected.
第を図は、さらに他の実施例を説明するための図である
。避雷器の保守管理の面から、避雷器に流れる衝撃大電
流を記録することが行われる。この一つの方法にペーパ
ーギャップ／９を用い、衝撃電流通電時にペーパーギャ
ップ１９に生じる穴の大きさから衝撃電流の大きさを記
録する方法が一般に用いられている。抵抗−〇は数１０
Ω程度の低い抵抗である。この実施例では抵抗、２ｏと
接地との間に第Ｓ図に示したと同様の容器／Ｓ、検出片
１６をイ」加する。衝撃電流通電時以外は、ペー バー
ギャップ／ｑは絶縁物であり、抵抗−〇は低い抵抗であ
るので、第Ｓ図の場合と全（同様の作用をする。一方衝
撃電流時には、抵抗−〇により端子電圧が上昇するので
、ペーパーギャップ１９が絶縁破壊し、従来と全（同様
に衝撃電流の大きさを記録することができる。Figure 5 is a diagram for explaining still another embodiment. In terms of maintenance and management of lightning arresters, it is necessary to record the large impact current flowing through the lightning arrester. One method generally used is to use a paper gap/9 and record the magnitude of the impulse current from the size of the hole created in the paper gap 19 when the impulse current is applied. Resistance - 〇 is number 10
It has a low resistance of about Ω. In this embodiment, a container/S similar to that shown in FIG. S and a detection piece 16 are added between the resistor 2o and the ground. Except when an impact current is applied, the paver gap /q is an insulator and the resistance -〇 is a low resistance, so it acts in the same way as in the case of Fig. As the terminal voltage increases, the paper gap 19 undergoes dielectric breakdown, and the magnitude of the shock current can be recorded in the same way as in the conventional case.
以上のように、この発明は、特性素子の温度と周辺の温
度との差を測定して避雷器の劣化を検出Ｔるようにした
ので、漏れ電流の測定などの高度な従来の方法に頼らな
くとも、簡単に精度よく、躊雷器の劣化を検出できろ効
果を有するものである。As described above, this invention detects the deterioration of a lightning arrester by measuring the difference between the temperature of the characteristic element and the surrounding temperature, thereby eliminating the need to rely on sophisticated conventional methods such as measuring leakage current. Both methods have the effect of easily and accurately detecting deterioration of the arrester.
第１図は酸化亜鉛素子の漏れ電流の経時変化特性線図、
第一図は従来方法を説明するための結線図、第３図はこ
の発明の詳細な説明子るための熱バランス線図、第９図
はこの発明の一実施例を説明するための縦断面および結
線図、第Ｓ図、第を図はそれぞれこの発明の他の実施例
を説明するための縦断面および結線図である。
ｌ・・避雷器、グ・・特性素子、Ｓ・・碍管、６．７・
・上・下部の止め板、ｌＯ，ｌざ・・周囲温度の測定点
、／／、／２・−熱電対、１３・・温度検出装置、／グ
・・劣化表示装置、／Ｓ・・容器、／６・・検出片、／
９・・ペーパーギャップ１．：ｌＯ・・抵抗。
なお、各図中、同一符号は同−又は相当部分を示す。
代理人 大岩増雄
幣１図
第２図
幣３図
ち４図Figure 1 is a characteristic diagram of leakage current over time for a zinc oxide element.
Fig. 1 is a wiring diagram for explaining the conventional method, Fig. 3 is a heat balance diagram for explaining the present invention in detail, and Fig. 9 is a longitudinal section for explaining an embodiment of the present invention. Figures 1 and 2 are a longitudinal section and a wiring diagram, respectively, for explaining other embodiments of the present invention. L...Surge arrester, G...Characteristic element, S...Insulator tube, 6.7.
・Upper and lower stop plates, lO, Lza...Ambient temperature measurement point, //, /2...Thermocouple, 13...Temperature detection device, /G...Deterioration display device, /S...Container , /6... detection piece, /
9. Paper gap 1. :lO...Resistance. In each figure, the same reference numerals indicate the same or corresponding parts. Agent: Masu Oiwa, figure 1, figure 2, figure 3, figure 4
Claims (4)
要素とし几避雷器の劣化検出方法において、前記特性要
素の温度と前記特性要素の周辺の温度との温度差を検出
し、前記温度差により前記避雷器の劣化を検出すること
を特徴とする避雷器劣化検出方法。(1) In a method for detecting deterioration of a lightning arrester using a non-linear resistor with excellent non-linear resistance characteristics as a characteristic element, a temperature difference between the temperature of the characteristic element and the temperature around the characteristic element is detected, and the temperature difference is detected. A method for detecting deterioration of a lightning arrester, characterized in that deterioration of the lightning arrester is detected by:
素を収納した碍管の内部である特許請求の範囲第７項記
載の避雷器劣化検出方法。(2) The method for detecting deterioration of a lightning arrester according to claim 7, wherein the measuring point of the ambient temperature of the characteristic element is inside an insulator tube housing the characteristic element.
とじ几避雷器の劣化検出方法において、前記特性要素と
同種の検出片を前記特性要素に接続して前記避雷器の外
部に設けた容器に収納し、前記検出片の温度と前記検出
片の周辺の温度との温度差を検出し、前記温度差により
前記避雷器の劣化を検出することを特徴とする避雷器劣
化検出方法。(3) In a method for detecting deterioration of a lightning arrester in which a non-linear resistor with excellent non-linear resistance characteristics is packed as a characteristic element, a detection piece of the same type as the characteristic element is connected to the characteristic element, and a container is provided outside the lightning arrester. 1. A method for detecting deterioration of a lightning arrester, comprising detecting a temperature difference between a temperature of the detection piece and a temperature around the detection piece, and detecting deterioration of the lightning arrester based on the temperature difference.
要素に接続して衝撃電流を記録するものの前記抵抗に直
列に接続された特許請求の範囲筒３項記載の避雷器劣化
検出方法。(4) The method for detecting deterioration of a lightning arrester according to claim 3, wherein the detection piece is connected in series to the resistor for recording the impact current by connecting the paper gap and the resistor to the characteristic element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10694683A JPS59230172A (en) | 1983-06-13 | 1983-06-13 | Detecting method of deterioration of lightning arrester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10694683A JPS59230172A (en) | 1983-06-13 | 1983-06-13 | Detecting method of deterioration of lightning arrester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS59230172A true JPS59230172A (en) | 1984-12-24 |
Family
ID=14446535
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10694683A Pending JPS59230172A (en) | 1983-06-13 | 1983-06-13 | Detecting method of deterioration of lightning arrester |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59230172A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6310486A (en) * | 1986-06-30 | 1988-01-18 | 昭和電線電纜株式会社 | Destruction detection for gapless arrester |
| JPH0391982U (en) * | 1990-01-05 | 1991-09-19 | ||
| US7508186B2 (en) * | 2003-06-12 | 2009-03-24 | Lm Glasfiber A/S | Registration of lightning strike in a wind turbine |
| CN104360197A (en) * | 2014-11-14 | 2015-02-18 | 武汉大学 | Method for monitoring resistance of valve discs of arresters based on resistance-capacitance network |
| CN105552874A (en) * | 2016-01-29 | 2016-05-04 | 上海雷迅防雷技术有限公司 | Method for judging fault situation of surge protective device by using temperature difference |
| CN105738724A (en) * | 2016-01-29 | 2016-07-06 | 上海雷迅防雷技术有限公司 | Surge protection device detection and analysis method and system |
| CN105785164A (en) * | 2016-01-29 | 2016-07-20 | 上海雷迅防雷技术有限公司 | Method and system for determining expected life of surge protection device |
-
1983
- 1983-06-13 JP JP10694683A patent/JPS59230172A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6310486A (en) * | 1986-06-30 | 1988-01-18 | 昭和電線電纜株式会社 | Destruction detection for gapless arrester |
| JPH0391982U (en) * | 1990-01-05 | 1991-09-19 | ||
| US7508186B2 (en) * | 2003-06-12 | 2009-03-24 | Lm Glasfiber A/S | Registration of lightning strike in a wind turbine |
| CN104360197A (en) * | 2014-11-14 | 2015-02-18 | 武汉大学 | Method for monitoring resistance of valve discs of arresters based on resistance-capacitance network |
| CN105552874A (en) * | 2016-01-29 | 2016-05-04 | 上海雷迅防雷技术有限公司 | Method for judging fault situation of surge protective device by using temperature difference |
| CN105738724A (en) * | 2016-01-29 | 2016-07-06 | 上海雷迅防雷技术有限公司 | Surge protection device detection and analysis method and system |
| CN105785164A (en) * | 2016-01-29 | 2016-07-20 | 上海雷迅防雷技术有限公司 | Method and system for determining expected life of surge protection device |
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