JPH0227809B2 - - Google Patents
Info
- Publication number
- JPH0227809B2 JPH0227809B2 JP59139122A JP13912284A JPH0227809B2 JP H0227809 B2 JPH0227809 B2 JP H0227809B2 JP 59139122 A JP59139122 A JP 59139122A JP 13912284 A JP13912284 A JP 13912284A JP H0227809 B2 JPH0227809 B2 JP H0227809B2
- Authority
- JP
- Japan
- Prior art keywords
- temperature
- data processing
- electrical equipment
- insulating material
- polymerization
- 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 - Lifetime
Links
Landscapes
- Housings And Mounting Of Transformers (AREA)
Description
【発明の詳細な説明】
〔発明の技術分野〕
この発明は、変圧器などの電気機器の絶縁物の
劣化を監視しかつ寿命を予測する絶縁物劣化監視
装置に関するものである。油入電気機器では、絶
縁物として、絶縁油と絶縁紙が使用されている。
絶縁油の場合は、サンプリングを行つて耐圧値な
どを測定し、劣化しているならば新油と取り替え
ることにより寿命の更新が行えるのに対し、絶縁
紙の場合は、その取り替えを行おうとすれば全面
解体となるので更新を行うことが出来ず、電気機
器の寿命は絶縁紙の劣化、寿命で決まるとも言え
る。DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to an insulator deterioration monitoring device that monitors the deterioration of an insulator in an electrical device such as a transformer and predicts its life. In oil-filled electrical equipment, insulating oil and insulating paper are used as insulators.
In the case of insulating oil, the lifespan can be extended by sampling and measuring the pressure resistance value, etc., and replacing it with new oil if it has deteriorated, but in the case of insulating paper, it is difficult to replace it. Since it would be completely dismantled, it would not be possible to update the equipment, and it can be said that the lifespan of electrical equipment is determined by the deterioration and lifespan of the insulating paper.
従来、絶縁紙の劣化を推定する方法として８度
則などが知られ、変圧器の運転指針や温度を積算
して寿命損失を算定する方法などに使われてい
る。しかしながら、この方法による寿命予測は、
30年間運転を100とした寿命の相対比較を行うも
のであり、運転保守に対する一つの指針としての
役割は大きいが、30年以上運転を継続しているも
のも存在し、実質的な劣化や寿命を判定すること
は出来ない欠点があつた。
Conventionally, the 8 degree rule is known as a method for estimating the deterioration of insulating paper, and is used in operating guidelines for transformers and in methods for calculating life loss by integrating temperatures. However, life prediction using this method is
This is a relative comparison of lifespan with 30 years of operation as 100, and it plays an important role as a guideline for operation and maintenance. There was a drawback that it was not possible to judge.
この発明は、上記の従来の欠点を除去するため
になされたもので、運転温度を積算して絶縁紙の
重合度を求めることにより、電気機器の絶縁紙の
実質的な劣化や寿命を判定できる絶縁物劣化監視
装置を提供することを目的としている。絶縁紙の
劣化は、紙の物理的な特性が運転経歴により変化
し、絶縁強度が影響を受けることである。物理的
な特性には重合度、引つぱり強度、破裂、耐折強
度などがあるが、特に重合度が主な要因であるこ
とが最近の研究で判明しており、重合度があるレ
ベル以下になると、振動などで紙が破れやすく、
著しく絶縁性能を低下させる。また、絶縁紙の重
合度の変化の要因については酸素と熱が主に影響
を及ぼすが、変圧器の場合など無圧密封式のコン
サベ−タなどにより、絶縁油に空気が直接さらさ
れないので酸素が供給されることはなく、重合度
劣化の主要因は熱と考えてよく、絶縁紙がさらさ
れている温度が主要因となる。
This invention was made to eliminate the above-mentioned conventional drawbacks, and by calculating the degree of polymerization of the insulating paper by integrating the operating temperature, it is possible to determine the substantial deterioration and lifespan of the insulating paper of electrical equipment. The purpose is to provide an insulator deterioration monitoring device. The deterioration of insulating paper is that the physical properties of the paper change with operating history and the insulating strength is affected. Physical properties include degree of polymerization, tensile strength, bursting strength, bending strength, etc., but recent research has shown that the degree of polymerization is the main factor; When this happens, the paper tends to tear due to vibrations, etc.
Significantly reduces insulation performance. Oxygen and heat are the main factors that affect the degree of polymerization of insulating paper, but in the case of transformers, air is not directly exposed to insulating oil, so oxygen is not supplied, and the main factor in the deterioration of the degree of polymerization can be considered to be heat, and the main factor is the temperature to which the insulating paper is exposed.
以下、この発明の一実施例を第２図について説
明する。図において、１は電気機器例えば変圧
器、２はこの変圧器１の温度を検知する温度セン
サ例えば測定抵抗体、３は温度センサ２ヘ接続さ
れたデ−タ処理部であつて、温度センサ２から入
力されたアナログ温度値をデジタル温度値に変換
するアナログ／デジタル変換器（Ａ／Ｄ）３１、
演算手段例えばCPU３２およびメモリ３３で構
成されている。４はデ−タ処理部３ヘ接続されて
寿命がどの位か外部に表わす表示部である。この
ように構成した絶縁物劣化監視装置では、デ−タ
処理部３は温度センサ２から入力された温度値を
Ａ／Ｄ３１で変換後に、CPU３２で時間積分し、
メモリ３３にあらかじめ覚えさせておいた第１図
の重合度対温度時間積分曲線と比較することによ
り重合度で算出する。寿命の判定はあらかじめ危
険値とされた重合度のレベルに達した時点とし、
寿命終了時点の他、消費寿命、残存寿命、将来可
能な負荷時間などを表示し、実質的な劣化判定が
行える他、過負荷運転などの運転指示管理を行わ
せることもできる。なお、負荷率の変動が大きい
場合や冷却器の制御が運転により変るような場
合、また絶縁物の温度分布があるような場合に
は、直接対象箇所に温度センサ２を埋め込む方法
の他、負荷率や冷却器運転状態を入力演算するこ
とにより、また温度分布については、各種の実験
により推定が可能なので、数点を対象とすること
により、重合度の演算精度を落すことなく実施で
きる。また、運転途中より絶縁物監視を行うよう
な場合には、電気機器の絶縁物の重合度の初期設
定が必要となるので、内部点検の場合などに絶縁
物の一部よりサンプリングを行つて重合度を測定
し、初期値を合せておけば以後の運転状態や寿命
劣化判定に同じ効果がある。デ−タ処理部は、変
圧器なび各電気機器に専用に設置してもよいし、
複数台の変圧器や電気機器をひとまとめにして１
個のデ−タ処理部を設置してもよい。
An embodiment of the present invention will be described below with reference to FIG. In the figure, 1 is an electrical device such as a transformer, 2 is a temperature sensor for detecting the temperature of the transformer 1, such as a measuring resistor, and 3 is a data processing unit connected to the temperature sensor 2. an analog/digital converter (A/D) 31 that converts the analog temperature value input from the input into a digital temperature value;
The computing means includes a CPU 32 and a memory 33, for example. Reference numeral 4 denotes a display section connected to the data processing section 3 to externally display how long the life span is. In the insulator deterioration monitoring device configured as described above, the data processing section 3 converts the temperature value input from the temperature sensor 2 using the A/D 31, and then integrates the temperature value over time using the CPU 32.
The degree of polymerization is calculated by comparing it with the degree of polymerization vs. temperature and time integral curve of FIG. 1, which is stored in the memory 33 in advance. The lifespan is determined when the degree of polymerization reaches a level that has been determined as a dangerous value in advance.
In addition to the end of life, consumption life, remaining life, possible future load times, etc. are displayed, and actual deterioration can be determined, and operation instructions such as overload operation can be managed. In addition, when the load factor fluctuates greatly, when the cooler control changes depending on the operation, or when there is a temperature distribution of the insulator, there is a method of embedding the temperature sensor 2 directly at the target location, It is possible to estimate the temperature distribution by inputting and calculating the rate and operating state of the cooler, and by various experiments, so by targeting several points, the degree of polymerization can be calculated without reducing the accuracy. In addition, when monitoring insulators during operation, it is necessary to initialize the degree of polymerization of the insulators in electrical equipment. Measuring the temperature and matching the initial values will have the same effect on determining future operating conditions and life deterioration. The data processing unit may be installed exclusively in each electrical equipment in the transformer, or
Combine multiple transformers and electrical equipment into one
It is also possible to install several data processing units.
以上のように、この発明によれば、変圧器など
の電気機器の絶縁物の重合度の低下を求めるデ−
タ処理部を設けたので、絶縁物の劣化診断が実効
的に行える他、過負荷運転管理も効果的に行える
効果がある。
As described above, according to the present invention, data for determining the degree of polymerization of insulators of electrical equipment such as transformers can be obtained.
Since a data processing section is provided, in addition to effectively diagnosing deterioration of insulators, overload operation management can also be effectively performed.
第１図は絶縁物の重合度対温度時間積分曲線を
示すグラフ図、そして第２図はこの発明の一実施
例を示すブロツク図である。
１は変圧器、２は温度センサ、３はデ−タ処理
部、４は表示部、３１はＡ／Ｄ、３２はCPU、
３３はメモリである。
FIG. 1 is a graph showing a degree of polymerization versus temperature and time integral curve of an insulator, and FIG. 2 is a block diagram showing an embodiment of the present invention. 1 is a transformer, 2 is a temperature sensor, 3 is a data processing section, 4 is a display section, 31 is an A/D, 32 is a CPU,
33 is a memory.
Claims (1)
定の絶縁物重合度対温度時間積分曲線をあらかじ
め覚えさせておいたメモリ、および前記温度セン
サから入力された温度値を時間積分して前記曲線
と比較し、前記電気機器中の絶縁物の重合度の低
下を求め、前記絶縁物の劣化を判定する演算手段
を有するデ−タ処理部とを備えたことを特徴とす
る絶縁物劣化監視装置。 ２ デ−タ処理部は電気機器の過負荷運転状態、
負荷率、または冷却器運転状態が入力される特許
請求の範囲第１項記載の絶縁物劣化監視装置。 ３ デ−タ処理部は複数台の電気機器に対して１
個設置される特許請求の範囲第１項または第２項
記載の絶縁物劣化監視装置。[Scope of Claims] 1. A temperature sensor for measuring the temperature of electrical equipment, a memory in which a predetermined insulating material polymerization degree versus temperature-time integral curve is stored in advance, and a temperature value input from the temperature sensor is stored over time. It is characterized by comprising a data processing unit having arithmetic means for integrating and comparing with the curve to determine a decrease in the degree of polymerization of the insulating material in the electrical equipment and determining deterioration of the insulating material. Insulator deterioration monitoring device. 2 The data processing unit detects the overload operating state of electrical equipment,
2. The insulation deterioration monitoring device according to claim 1, wherein the load factor or the operating state of the cooler is input. 3 The data processing unit is
An insulating material deterioration monitoring device according to claim 1 or 2, which is installed individually.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59139122A JPS6119106A (en) | 1984-07-06 | 1984-07-06 | Insulator deterioration monitoring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59139122A JPS6119106A (en) | 1984-07-06 | 1984-07-06 | Insulator deterioration monitoring device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6119106A JPS6119106A (en) | 1986-01-28 |
| JPH0227809B2 true JPH0227809B2 (en) | 1990-06-20 |
Family
ID=15238014
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59139122A Granted JPS6119106A (en) | 1984-07-06 | 1984-07-06 | Insulator deterioration monitoring device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6119106A (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4323396B2 (en) * | 2004-08-23 | 2009-09-02 | 東北電力株式会社 | Power transformer remaining life diagnosis apparatus and remaining life diagnosis method |
| JP4800903B2 (en) * | 2006-11-09 | 2011-10-26 | 関西電力株式会社 | Deterioration degree estimation method and apparatus for oil-filled electrical equipment |
| CN104375029A (en) * | 2014-11-10 | 2015-02-25 | 大连理工大学 | Intelligent insulator aging test box |
| CN113588714B (en) * | 2021-08-26 | 2024-07-26 | 国网四川省电力公司成都供电公司 | Composite insulator defect detection method |
| JP7157268B1 (en) * | 2022-03-23 | 2022-10-19 | 一般財団法人電力中央研究所 | Life evaluation method for pole-mounted transformers |
-
1984
- 1984-07-06 JP JP59139122A patent/JPS6119106A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6119106A (en) | 1986-01-28 |
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