JP2731685B2 - Soil detection sensor - Google Patents
Soil detection sensorInfo
- Publication number
- JP2731685B2 JP2731685B2 JP346093A JP346093A JP2731685B2 JP 2731685 B2 JP2731685 B2 JP 2731685B2 JP 346093 A JP346093 A JP 346093A JP 346093 A JP346093 A JP 346093A JP 2731685 B2 JP2731685 B2 JP 2731685B2
- Authority
- JP
- Japan
- Prior art keywords
- electrodes
- insulating plate
- detection sensor
- leakage current
- resistance value
- 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.)
- Expired - Fee Related
Links
Landscapes
- Measurement Of Resistance Or Impedance (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
- Insulators (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、架空送電線を絶縁支持
する碍子装置の汚損量を把握するために用いられる汚損
検出センサの改良に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a fouling detection sensor used for grasping a fouling amount of an insulator device for insulatingly supporting an overhead transmission line.
【０００２】[0002]
【従来の技術】碍子装置の表面が付着塩分により汚損さ
れると絶縁性が低下するため、架空送電線路の保守のた
めには碍子装置の汚損量を常に把握しておく必要があ
る。このために碍子装置の近傍に設置する汚損検出セン
サが従来から知られている。2. Description of the Related Art When the surface of an insulator device is contaminated by attached salt, the insulating property deteriorates. Therefore, it is necessary to keep track of the amount of contamination of the insulator device for maintenance of an overhead transmission line. Therefore, a fouling detection sensor installed near the insulator device has been conventionally known.
【０００３】この種の汚損検出センサの代表的なもの
は、例えば実開昭62-88951号公報に示されるように、絶
縁板上の電極間抵抗値に基づいて絶縁板上の等価塩分付
着量を検出する方式のもので、測定時に絶縁板を電子冷
却して結露を生じさせ、電極間を湿潤させた状態でもれ
電流を測定する工夫がなされている。A typical example of this type of fouling detection sensor is, for example, as disclosed in Japanese Utility Model Laid-Open Publication No. Sho 62-88951, based on the resistance value between electrodes on an insulating plate and the amount of equivalent salt deposited on the insulating plate. A method has been devised in which the insulating plate is electronically cooled during measurement to cause dew condensation, and the leakage current is measured even when the electrodes are moistened.
【０００４】しかしこの種の従来の汚損検出センサは、
絶縁板上の全体に広く分布させた電極の全体を湿潤させ
る必要があるために、部分的に過剰に湿潤される部分が
生じることが避けられず、電極間のもれ電流が変化して
測定精度が低下する傾向があった。またこれを避けるた
めに湿潤を抑制すると部分的に湿潤不足が生じ、電極間
のもれ電流が飽和に達する前に測定が終了し、やはり測
定精度が低下する傾向があった。However, this type of conventional fouling detection sensor is
Since it is necessary to wet the entirety of the electrodes that are widely distributed over the insulating plate, it is inevitable that some parts will be excessively wetted, and the leakage current between the electrodes will change and measurement will be performed The accuracy tended to decrease. In order to avoid this, if wetting is suppressed, insufficient wetting occurs partially, and the measurement ends before the leakage current between the electrodes reaches saturation, which also tends to lower the measurement accuracy.
【０００５】[0005]
【発明が解決しようとする課題】本発明は上記した従来
の問題点を解消して、絶縁板上の全体に広く分布させた
電極間のもれ電流を精度よく検出することができ、これ
により絶縁板上全体の等価塩分付着量を正確に知ること
ができる汚損検出センサを提供するために完成されたも
のである。SUMMARY OF THE INVENTION The present invention solves the above-mentioned conventional problems and can accurately detect a leakage current between electrodes widely distributed on an insulating plate. The present invention has been completed in order to provide a fouling detection sensor capable of accurately knowing the amount of equivalent salt deposited on the entire insulating plate.
【０００６】[0006]
【課題を解決するための手段】上記の課題を解決するた
めになされた本発明は、絶縁板上の電極間抵抗値に基づ
いて絶縁板上の等価塩分付着量を検出する汚損検出セン
サにおいて、絶縁板上に多数の電極をマトリックス状に
配置するとともに、２つの電極を順次選択しそれらの電
極間に電圧を印加して抵抗値を測定するスイッチ回路
と、このようにして測定された絶縁板上全体の抵抗値分
布から等価塩分付着量を演算する演算回路とを設けたこ
とを特徴とするものである。SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a fouling detection sensor for detecting the amount of equivalent salt deposited on an insulating plate based on the resistance between electrodes on the insulating plate. A switch circuit for arranging a large number of electrodes in a matrix on an insulating plate, sequentially selecting two electrodes and applying a voltage between the electrodes to measure a resistance value, and an insulating plate measured in this manner And an arithmetic circuit for calculating the equivalent salt deposition amount from the entire resistance value distribution.
【０００７】[0007]
【実施例】以下に本発明を図示の実施例により更に詳細
に説明する。図１において、１は碍子と同様のセラミッ
ク質よりなる絶縁板であり、２はこの絶縁板１の上にマ
トリックス状に配置された多数の電極である。各電極
２、２の間隔は微少距離とされている。各電極２、２は
横方向及び縦方向のスイッチ回路３、４に接続されてい
る。ここではスイッチ回路３、４としてアナログスイッ
チやリレー接点が用いられており、これらのスイッチ回
路３、４を順次切り換えることにより、隣接する２個の
電極を次々と選択してライン５とライン６に電気的に接
続することができるようになっている。DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in more detail with reference to the illustrated embodiments. In FIG. 1, reference numeral 1 denotes an insulating plate made of the same ceramic material as the insulator, and reference numeral 2 denotes a large number of electrodes arranged on the insulating plate 1 in a matrix. The distance between the electrodes 2, 2 is a minute distance. Each electrode 2, 2 is connected to horizontal and vertical switch circuits 3, 4. Here, analog switches and relay contacts are used as the switch circuits 3 and 4. By switching these switch circuits 3 and 4 sequentially, two adjacent electrodes are selected one after another to form the lines 5 and 6. It can be electrically connected.
【０００８】ライン５とライン６は測定用電源７と測定
用抵抗８に接続され、測定用抵抗８に流れる電流を測定
することによりスイッチ回路３、４で選択された一対の
電極２、２間の導電性の汚損付着物によるもれ電流が回
路を流れ、測定用抵抗８にもれ電流に比例した起電圧と
して発生する。そしてこの測定用抵抗８の両端の電圧値
はA/D 変換器９によりデジタル値に変換され、演算装置
10に入力される。なお絶縁板１には電子冷却装置11また
は蒸気加湿器などの絶縁板１上の汚損物に湿潤を与える
装置が取り付けられ、絶縁板１を湿潤させることができ
るようになっている。A line 5 and a line 6 are connected to a measuring power source 7 and a measuring resistor 8, and a current flowing through the measuring resistor 8 is measured to connect the pair of electrodes 2 and 2 selected by the switch circuits 3 and 4. The leakage current due to the conductive contaminant deposits flows through the circuit and is generated as an electromotive voltage in the measuring resistor 8 in proportion to the leakage current. Then, the voltage value at both ends of the measuring resistor 8 is converted into a digital value by the A / D converter 9 and
Entered in 10. The insulating plate 1 is provided with a device for moistening contaminants on the insulating plate 1, such as an electronic cooling device 11 or a steam humidifier, so that the insulating plate 1 can be wetted.
【０００９】[0009]
【作用】このように構成された本発明の汚損検出センサ
は、碍子装置と同一の汚損を受けるように碍子装置の近
傍に設置されるもので、汚損測定の際にはまず絶縁板１
上にマトリックス状に配置された多数の電極２、２から
スイッチ回路３、４により２つの電極を選択し、電子冷
却装置11等により絶縁板１に湿潤を与える。図２に示す
ように、加湿が進行するに連れて電極間のもれ電流値は
次第に増加し、ある時点で飽和に達するので、この時間
変化を演算装置10で監視して飽和値をその電極間のもれ
電流値（抵抗値）とする。The fouling detection sensor of the present invention thus constructed is installed near the insulator apparatus so as to receive the same fouling as the flaw insulator apparatus.
Two electrodes are selected from the large number of electrodes 2 and 2 arranged in a matrix by the switch circuits 3 and 4, and the insulating plate 1 is wetted by the electronic cooling device 11 or the like. As shown in FIG. 2, the leakage current between the electrodes gradually increases as the humidification progresses, and reaches saturation at a certain point in time. The leakage current value (resistance value) is used.
【００１０】このようにして最初に選択された電極２、
２間のもれ電流値（抵抗値）の測定を終了すると、スイ
ッチ回路３、４は次の電極２、２を選択し、同様に測定
を行う。そしてこの動作を繰り返して全ての電極間の測
定が終了したとき、演算装置10は絶縁板１上全体の抵抗
値分布を算出し、図３に示されるような関係を利用して
絶縁板１上の等価塩分付着量を演算する。[0010] The electrode 2, which is thus initially selected,
When the measurement of the leakage current value (resistance value) between the two ends, the switch circuits 3 and 4 select the next electrodes 2 and 2 and perform the same measurement. When the measurement is completed between all the electrodes by repeating this operation, the arithmetic unit 10 calculates the resistance distribution on the entire insulating plate 1 and uses the relationship as shown in FIG. Is calculated.
【００１１】上記したように、本発明の汚損検出センサ
はマトリックス状に配置された多数の電極２、２間の微
少な間隔を利用して微少部分にのみ順次電圧を印加する
方式を採用したので、１組の電極間のもれ電流測定中に
絶縁板１上の他の部分には電圧が印加されず、もれ電流
が流れないため、電流による発熱で汚損湿潤状態が変化
することがない。従って絶縁板の全体を十分に湿潤させ
て測定する必要のあった従来の汚損検出センサに比較し
て、はるかに正確な測定を行うことができる。また湿潤
状態は、絶縁板と湿潤を与える装置の相対位置で板の面
状で分布しており、表面の湿潤状態によって電流分布が
異なるが、本方式では電極間距離が狭く、１対の電極間
では均一湿潤と考えられる。このため、それぞれの１対
の電極間の湿潤状態に応じて繰り返し計測することがで
きるので、もれ電流の飽和値を得やすく、精度の高い測
定が可能である。As described above, the fouling detection sensor of the present invention employs a system in which a voltage is sequentially applied only to a minute portion by utilizing a minute interval between a large number of electrodes 2 arranged in a matrix. No voltage is applied to the other portion of the insulating plate 1 during the leakage current measurement between one set of electrodes, and no leakage current flows, so that the fouling and wet state does not change due to heat generated by the current. . Therefore, a far more accurate measurement can be performed as compared with the conventional contamination detection sensor which required the entire insulating plate to be sufficiently wetted for the measurement. The wet state is distributed in the form of a plate at the relative position of the insulating plate and the device for applying wetness, and the current distribution varies depending on the wet state of the surface. Between is considered uniform wet. For this reason, since the measurement can be repeatedly performed according to the wet state between each pair of electrodes, it is easy to obtain the saturation value of the leakage current, and highly accurate measurement is possible.
【００１２】[0012]
【発明の効果】以上に説明したように、本発明の汚損検
出センサは絶縁板全体に広く分布させた多数の電極間の
もれ電流を過剰な湿潤を与えることなく精度よく検出す
ることができ、これにより絶縁板上全体の等価塩分付着
量を正確に知ることができる利点がある。よって本発明
は従来の問題点を解消した汚損検出センサとして、産業
の発展に寄与するところはきわめて大きいものである。As described above, the contamination detection sensor of the present invention can accurately detect the leakage current between a large number of electrodes widely distributed over the entire insulating plate without giving excessive wetting. Thus, there is an advantage that the equivalent salt deposition amount on the entire insulating plate can be accurately known. Therefore, the present invention greatly contributes to industrial development as a fouling detection sensor which has solved the conventional problems.
【図１】本発明の実施例を示す回路図である。FIG. 1 is a circuit diagram showing an embodiment of the present invention.
【図２】加湿による電極間のもれ電流値の変化を示すグ
ラフである。FIG. 2 is a graph showing a change in a leakage current value between electrodes due to humidification.
【図３】絶縁板上への塩分付着量と電極間のもれ電流値
の変化を示すグラフである。FIG. 3 is a graph showing a change in the amount of salt attached to an insulating plate and a leakage current value between electrodes.
１ 絶縁板 ２ マトリックス状に配置された電極 ３ スイッチ回路 ４ スイッチ回路 10 演算回路 REFERENCE SIGNS LIST 1 insulating plate 2 electrodes arranged in a matrix 3 switch circuit 4 switch circuit 10 arithmetic circuit
───────────────────────────────────────────────────── フロントページの続き (72)発明者 中村 永植 愛知県名古屋市天白区表山３丁目150番 地 (56)参考文献 特開 昭63−144296（ＪＰ，Ａ) 特開 平６−207917（ＪＰ，Ａ) 特開 平６−207918（ＪＰ，Ａ) 特開 平６−207919（ＪＰ，Ａ) 特開 平６−207920（ＪＰ，Ａ) 実開 昭62−88951（ＪＰ，Ｕ) ──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Nagae Nagae 3-150 Omoyama, Tenpaku-ku, Nagoya City, Aichi Prefecture (56) References JP-A-63-144296 (JP, A) JP-A-6-207917 (JP, A) JP-A-6-207918 (JP, A) JP-A-6-207919 (JP, A) JP-A-6-207920 (JP, A) JP-A-62-188951 (JP, U)
Claims (1)
板上の等価塩分付着量を検出する汚損検出センサにおい
て、絶縁板上に多数の電極をマトリックス状に配置する
とともに、２つの電極を順次選択しそれらの電極間に電
圧を印加して抵抗値を測定するスイッチ回路と、このよ
うにして測定された絶縁板上全体の抵抗値分布から等価
塩分付着量を演算する演算回路とを設けたことを特徴と
する汚損検出センサ。In a fouling detection sensor for detecting an equivalent salt deposition amount on an insulating plate based on a resistance value between the electrodes on the insulating plate, a large number of electrodes are arranged in a matrix on the insulating plate and two electrodes are arranged. A switch circuit for sequentially selecting and applying a voltage between the electrodes to measure the resistance value, and a calculation circuit for calculating the equivalent salt deposition amount from the resistance value distribution on the entire insulating plate thus measured. A fouling detection sensor characterized by being provided.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP346093A JP2731685B2 (en) | 1993-01-12 | 1993-01-12 | Soil detection sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP346093A JP2731685B2 (en) | 1993-01-12 | 1993-01-12 | Soil detection sensor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06207916A JPH06207916A (en) | 1994-07-26 |
| JP2731685B2 true JP2731685B2 (en) | 1998-03-25 |
Family
ID=11557944
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP346093A Expired - Fee Related JP2731685B2 (en) | 1993-01-12 | 1993-01-12 | Soil detection sensor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2731685B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2527766B (en) * | 2014-06-30 | 2020-07-29 | Elcometer Ltd | Contamination meter |
-
1993
- 1993-01-12 JP JP346093A patent/JP2731685B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06207916A (en) | 1994-07-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA2258360A1 (en) | Coupon monitor for cathodic protection system | |
| US2659861A (en) | Apparatus for electrical thickness measurement | |
| JPH07306098A (en) | Temperature measuring instrument by oxygen probe | |
| JP2731685B2 (en) | Soil detection sensor | |
| JP3103449B2 (en) | Soil detection method | |
| JPH02243951A (en) | Diagnosis of corrosion of steel material within reinforced condrete | |
| JP3067921B2 (en) | Soil detection sensor | |
| JP3103450B2 (en) | Soil detection method | |
| JP3067922B2 (en) | Soil detection sensor | |
| JP2945315B2 (en) | Method and apparatus for detecting insulator fouling | |
| JPH04315062A (en) | Method for measuring resistance value of resistor | |
| SU993394A1 (en) | Device for registering voltage distribution curve between adjacent commutator plates of dc electric machine | |
| JPS56153745A (en) | Method for defect evaluation on insulative thin film | |
| JPH0552789A (en) | Moisture content sensor | |
| JPH06342031A (en) | Measuring apparatus for insulator stain | |
| JP3638067B2 (en) | A method for determining the position of a nail punched into a hot water pipe of a floor heating system | |
| JPH0579489U (en) | Beam current density distribution measuring device | |
| SU1434348A1 (en) | Method of electric resistance flaw detection in conducting media | |
| SU1317348A1 (en) | Device for performing thermal flaw detection | |
| SU1684739A1 (en) | Thermographic method of non-destructive control of pc board wiring | |
| JPH0330829B2 (en) | ||
| JP2004095347A (en) | Insulator pollution detector | |
| JPH10312722A (en) | Insulator contamination detecting devices | |
| JPH0192651A (en) | Insulator stain detecting device | |
| JP2021032582A (en) | Corrosion sensor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 19971205 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20081219 Year of fee payment: 11 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20081219 Year of fee payment: 11 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20091219 Year of fee payment: 12 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20091219 Year of fee payment: 12 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20101219 Year of fee payment: 13 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20111219 Year of fee payment: 14 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20121219 Year of fee payment: 15 |
|
| LAPS | Cancellation because of no payment of annual fees |