JP2563126Y2 - Non-contact DC feeding circuit voltage detector - Google Patents
Non-contact DC feeding circuit voltage detectorInfo
- Publication number
- JP2563126Y2 JP2563126Y2 JP1989131328U JP13132889U JP2563126Y2 JP 2563126 Y2 JP2563126 Y2 JP 2563126Y2 JP 1989131328 U JP1989131328 U JP 1989131328U JP 13132889 U JP13132889 U JP 13132889U JP 2563126 Y2 JP2563126 Y2 JP 2563126Y2
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- feeder
- electric field
- control center
- reference voltage
- 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 Current Or Voltage (AREA)
Description
【考案の詳細な説明】 産業上の利用分野 本考案は並列き電方式における直流き電回路の電圧検
出装置に関する。DETAILED DESCRIPTION OF THE INVENTION INDUSTRIAL APPLICATION The present invention relates to a voltage detecting device for a DC feeding circuit in a parallel feeding system.
従来の技術 並列き電方式は、２つの変電所から各列の遮断器を介
して１つのき電線に直流電圧を給電する方式である。か
かる並列き電方式のき電回路において、き電線の点検、
修理を行なう場合には２つの遮断器を切断し、き電線を
無給電状態にする必要がある。2. Description of the Related Art The parallel feeding system is a system in which a DC voltage is supplied from two substations to one feeder via breakers in each row. In such a parallel feeder feeder circuit, inspection of feeder wires,
When performing repairs, it is necessary to cut off the two circuit breakers and make the feeder line unpowered.
遮断器の切断はコントロールセンターから遠隔操作に
より行なうことができるが、時々何らかの原因によって
一方の遮断器が切れていないことがある。このような場
合にき電線の点検・修理を行なうと非常に危険であるの
で、コントロールセンターでの遮断器切断制御とは別
に、実際にき電線に給電されていないことを検出するこ
とが要求される。The disconnection of the circuit breaker can be performed remotely from the control center, but sometimes one of the circuit breakers is not disconnected for some reason. In such a case, inspection and repair of the feeder line is extremely dangerous, so it is necessary to detect that the feeder line is not actually being supplied with power separately from the breaker disconnection control at the control center. You.
従来、このような検出装置としてき電回路を直接取付
けてき電回路の電圧を測定するいわゆる接触式の検出装
置が使われていた。Heretofore, a so-called contact type detection device which directly attaches a feeder circuit and measures the voltage of the feeder circuit has been used as such a detection device.
考案が解決しようとする課題 しかしながら、き電線には給電中1500Vもの高圧がか
かっているので、検出装置はそのような高圧に耐えられ
るように十分な絶縁を施す必要があるし、分圧器等他の
部品も必要となり、装備が大掛かりとなりかつコスト高
となるといった課題があった。However, since the feeder line is subjected to a high voltage of 1500 V during power supply, the detector must be sufficiently insulated to withstand such a high voltage. However, there is a problem that the equipment becomes large and the cost increases.
本考案はかかる点に鑑み、簡単な構成で簡易にセット
でき、低コストな電圧検出装置を提供することを目的と
している。In view of the above, an object of the present invention is to provide a low-cost voltage detection device that can be easily set with a simple configuration.
課題を解決するための手段 上記目的を達成するため、コントロールセンターによ
りき電線の遮断器の入切を制御する並列き電方式におい
て、き電線に対して所定の距離だけ離して設けられた、
電界強度を直流電圧に変換して出力する電界強度測定手
段と、電界強度測定手段の出力電圧を所定の基準電圧と
比較し、この出力電圧が基準電圧を越えているか否かを
判断する判断手段と、判断手段により電界強度測定手段
の出力電圧が基準電圧を越えていると判断された場合
に、前記コントロールセンターに対し信号を出力する報
知手段とを設けたものである。Means for Solving the Problems In order to achieve the above object, in a parallel feeding system in which the control center controls the on / off of the breaker of the feeder, provided at a predetermined distance from the feeder,
An electric field intensity measuring means for converting the electric field intensity into a DC voltage and outputting the DC voltage; and a judging means for comparing the output voltage of the electric field intensity measuring means with a predetermined reference voltage and judging whether or not this output voltage exceeds the reference voltage. And a notifying means for outputting a signal to the control center when the judgment means judges that the output voltage of the electric field strength measuring means exceeds the reference voltage.
作用 電界強度測定手段としては、例えば、機械振動子の振
動振幅を利用して電界強度を直流電圧に変換する表面電
位センサが使用される。かかる電界強度測定手段をき電
線から所定の距離だけ離して設けることにより、その設
定位置での電界強度の測定が行われる。ここで、電界強
度はき電線電圧に比例し、距離の２乗に反比例するの
で、この電界強度測定手段の出力により、き電線電圧を
検出することが可能となる。Action As the electric field intensity measuring means, for example, a surface potential sensor that converts the electric field intensity into a DC voltage using the vibration amplitude of a mechanical oscillator is used. By providing such electric field strength measuring means at a predetermined distance from the feeder wire, the electric field strength is measured at the set position. Here, the electric field strength is proportional to the feeder line voltage and inversely proportional to the square of the distance, so that the output of the electric field strength measuring means makes it possible to detect the feeder line voltage.
さて本願考案は上記構成により、まずコントロールセ
ンターからの遠隔操作によってき電線の遮断器が切られ
ると、これによりき電線の表面電位が下がり、これを測
定している電界強度測定手段の出力電圧が下がる。しか
し、き電線の電流が切られた場合でもしばらくはき電線
には電荷が残留し、き電線の電圧は直ちには０にはなら
ない。これは、き電線と大地には、き電線と大地間の空
気を誘電体とする静電容量やケーブルの被覆を誘電体と
する静電容量があり、また、設備上き電線と大地の間は
高抵抗しか存在しないことから、き電線の残留電荷の放
電が直ちには行われず、き電線電圧が直流き電回路の時
定数をもって降下することによる。Now, according to the invention of the present application, when the breaker of the feeder line is turned off by remote control from the control center, the surface potential of the feeder line drops, and the output voltage of the electric field strength measuring means measuring this is reduced. Go down. However, even when the current of the feeder is cut off, electric charges remain in the feeder for a while, and the voltage of the feeder does not immediately become zero. This is because there is a capacitance between the feeder line and the ground between the feeder line and the ground, and a capacitance between the feeder line and the ground that uses air as a dielectric or the sheath of the cable as a dielectric. Since only high resistance is present, the residual charge of the feeder is not immediately discharged, and the feeder voltage drops with the time constant of the DC feeder circuit.
そこで、電界強度測定手段の出力電圧を、判断手段に
よって所定の基準電圧と比較する。き電線の残留電荷が
十分放電されない間は電界強度測定手段の出力電圧が高
い状態であり基準電圧を越えるので、判断手段は電界強
度測定手段の出力電圧が基準電圧を越えていると判断す
る。判断手段が電界強度測定手段の出力電圧が基準電圧
を越えていると判断すると、報知手段はコントロールセ
ンターに信号を出力し、コントロールセンサーにき電線
の電圧が危険な状態であることを知らせる。そして、き
電線の残留電荷が十分放電されて電界強度測定手段の出
力電圧が基準電圧より低くなると、判断手段は電界強度
測定手段の出力電圧が基準電圧を越えていると判断しな
くなる。この結果、報知手段はコントロールセンターに
信号を出力せず、コントロールセンターにき電線の電圧
が安全な状態となったことを知らせる。Then, the output voltage of the electric field strength measuring means is compared with a predetermined reference voltage by the judging means. While the residual electric charge of the feeder wire is not sufficiently discharged, the output voltage of the electric field intensity measuring means is in a high state and exceeds the reference voltage, and therefore, the judging means judges that the output voltage of the electric field intensity measuring means exceeds the reference voltage. If the determining means determines that the output voltage of the electric field strength measuring means exceeds the reference voltage, the notifying means outputs a signal to the control center to notify the control sensor that the voltage of the feeder line is in a dangerous state. Then, when the residual charge of the feeder line is sufficiently discharged and the output voltage of the electric field strength measuring means becomes lower than the reference voltage, the judging means does not judge that the output voltage of the electric field strength measuring means exceeds the reference voltage. As a result, the notification means does not output a signal to the control center, but informs the control center that the voltage of the feeder cable is in a safe state.
実施例 第１図は本考案装置の適用された並列き電方式のき電
回路を示している。図中、1,2,3,4は夫々き電線で、両
端が遮断器5,6,7,8,9,10を介して変電所ASS,BSS,CSSか
ら給電されるように接続されている。前記各き電線１〜
４は夫々全長が４〜10Km程度ある。き電線の両端に設け
られた遮断器５〜10はコントロールセンター（不図示）
から入切制御されるようコントロールセンターと制御線
で接続されている。Embodiment FIG. 1 shows a feeding circuit of a parallel feeding system to which the present invention is applied. In the figure, 1,2,3,4 are respective electric wires, both ends of which are connected so as to be supplied with power from the substations ASS, BSS, CSS via breakers 5, 6, 7, 8, 9, 10. I have. Each of the above-mentioned electric wires 1
Nos. 4 each have a total length of about 4 to 10 km. Circuit breakers 5 to 10 provided at both ends of the feeder line are a control center (not shown)
It is connected to the control center by a control line so that on / off control is performed.
前記遮断器５〜10の近くのき電線１〜４には一定距離
離隔した状態で表面電位センサ11,12,13,14,15,16が設
けられてある。各表面電位センサ11〜16は作用の項で説
明した原理により電界強度を測定するセンサであり、例
えば日本電気製MNU−18Aを用いることができる。表面電
位センサとき電線との離隔距離ｄ（第２図参照）はあま
り近接しているとき電線に高圧がかかっているので絶縁
破壊を起こすおそれがあるし、逆にあまり離れていると
感度が悪くなり測定に支障を来すので、絶縁上問題なく
しかも適切な感度が得られるような距離に設定するのが
望ましい。本実施例では表面電位センサとして上記した
製品を用いる条件において離隔距離ｄを40mmに設定する
ことで好結果を得た。Feeder wires 1-4 near the circuit breakers 5-10 are provided with surface potential sensors 11, 12, 13, 14, 15, 16 at a predetermined distance from each other. Each of the surface potential sensors 11 to 16 is a sensor for measuring the electric field intensity based on the principle described in the section of the operation, and for example, NEC-made MNU-18A can be used. When the distance d (see FIG. 2) between the surface potential sensor and the electric wire is too close, high voltage is applied to the electric wire, which may cause insulation breakdown. Conversely, if the distance is too large, the sensitivity is poor. Therefore, it is desirable to set the distance so that there is no problem in insulation and an appropriate sensitivity can be obtained. In this example, good results were obtained by setting the separation distance d to 40 mm under the conditions using the above-described product as the surface potential sensor.
表面電位センサをき電線から上記した一定距離だけ離
隔させる手段としては第２図に示すようにき電線近くの
壁面21に適当な長さの線支持棒22を取付け、その支持棒
先端に表面電位センサをセットする構成が採られる。も
っとも他の構成を採用することは任意である。As means for separating the surface potential sensor from the feeder wire by the above-mentioned fixed distance, a wire support rod 22 of an appropriate length is attached to a wall 21 near the feeder wire as shown in FIG. A configuration for setting a sensor is employed. However, adopting another configuration is optional.
第３図は表面電位センサ11〜16の検出信号を処理する
ための回路で、判断手段の比較器Compと報知手段のリレ
ーRyとからなる。比較器Compはセンサ検出信号Siを基準
電圧Esと比較し、センサ検出信号が基準電圧を越えると
き比較出力を発し、リレーRyを駆動する。リレーRyの接
点ryaはコントロールセンターと遠制装置を介して接続
されているので、リレーRyの駆動により、コントロール
センターはき電線が給電状態にあることを知ることがで
きる。FIG. 3 is a circuit for processing the detection signals of the surface potential sensors 11 to 16 and comprises a comparator Comp as a judgment means and a relay Ry as a notification means. The comparator Comp compares the sensor detection signal Si with the reference voltage Es, generates a comparison output when the sensor detection signal exceeds the reference voltage, and drives the relay Ry. Since the contact rya of the relay Ry is connected to the control center via the remote control device, it is possible to know that the control center feeder line is in a power supply state by driving the relay Ry.
考案の効果 以上説明したように本考案によれば、電界強度測定手
段及び判断手段によって非接触でき電線の給電状態等を
検出し、その結果を報知手段によりコントロールセンタ
ーへ送出することができるので、並列き電方式における
遮断器切断ミスによる事故を防止することができると共
に、非接触方式のため絶縁上の問題がなくなり、設備的
には大変有利になり、低コストでの実施が可能になると
いった実用的効果を奏する。Effect of the Invention As described above, according to the present invention, the electric field strength measurement means and the judgment means can make a non-contact detection of the power supply state of the electric wire and the like, and the result can be transmitted to the control center by the notification means. In addition to preventing accidents due to breaker disconnection mistakes in the parallel feeding system, insulation problems are eliminated due to the non-contact system, making it very advantageous in terms of equipment and enabling implementation at low cost. It has a practical effect.
【図面の簡単な説明】 第１図は本考案装置の適用例を示す図、第２図は本考案
装置の設置列を示す図、第３図は本考案装置の回路例を
示す図である。 １〜４…き電線、５〜10…遮断器、11〜16…表面電位セ
ンサ、ASS,BSS,CSS…変電所BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a diagram showing an application example of the device of the present invention, FIG. 2 is a diagram showing an installation row of the device of the present invention, and FIG. 3 is a diagram showing a circuit example of the device of the present invention. . 1-4: feeder wire, 5-10: breaker, 11-16: surface potential sensor, ASS, BSS, CSS ... substation
───────────────────────────────────────────────────── フロントページの続き (72)考案者 宮崎 信夫 大阪府箕面市瀬川４丁目４番10号 津田 電気計器株式会社内 (72)考案者 ▲高▼橋 章雄 大阪府箕面市瀬川４丁目４番10号 津田 電気計器株式会社内 (56)参考文献 特開 昭56−160228（ＪＰ，Ａ) 特開 昭64−56241（ＪＰ，Ａ) 特開 昭56−103370（ＪＰ，Ａ) 特開 昭58−169063（ＪＰ，Ａ) 特開 昭60−178365（ＪＰ，Ａ) 実開 昭57−146075（ＪＰ，Ｕ) ──────────────────────────────────────────────────続 き Continuing on the front page (72) Nobuo Miyazaki 4-4-10, Segawa, Minoo-shi, Osaka Tsuda Electric Instruments Co., Ltd. No. 10 Tsuda Denki Keiki Co., Ltd. (56) References JP-A-56-160228 (JP, A) JP-A-64-56241 (JP, A) JP-A-56-103370 (JP, A) JP-A 58 -1669063 (JP, A) JP-A-60-178365 (JP, A) JP-A-57-146075 (JP, U)
Claims (1)
の入切を制御する並列き電方式における、き電線電圧を
検出する装置であって、 き電線に対して所定の距離だけ離して設けられた、電界
強度を直流電圧に変換して出力する電界強度測定手段
と、 電界強度測定手段の出力電圧を所定の基準電圧と比較
し、この出力電圧が基準電圧を越えているか否かを判断
する判断手段と、 判断手段により電界強度測定手段の出力電圧が基準電圧
を越えていると判断された場合に、前記コントロールセ
ンターに対して信号を出力する報知手段とを設けた非接
触形直流き電回路検出装置。An apparatus for detecting a feeder voltage in a parallel feeder system for controlling the on / off of a feeder breaker from a control center, provided at a predetermined distance from the feeder. An electric field intensity measuring means for converting the electric field intensity into a DC voltage and outputting the DC voltage, and comparing the output voltage of the electric field intensity measuring means with a predetermined reference voltage to judge whether or not this output voltage exceeds the reference voltage. A non-contact type DC feeding circuit provided with a means for outputting a signal to the control center when the determination means determines that the output voltage of the electric field strength measurement means exceeds the reference voltage. Detection device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989131328U JP2563126Y2 (en) | 1989-11-10 | 1989-11-10 | Non-contact DC feeding circuit voltage detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989131328U JP2563126Y2 (en) | 1989-11-10 | 1989-11-10 | Non-contact DC feeding circuit voltage detector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0370366U JPH0370366U (en) | 1991-07-15 |
| JP2563126Y2 true JP2563126Y2 (en) | 1998-02-18 |
Family
ID=31678844
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1989131328U Expired - Fee Related JP2563126Y2 (en) | 1989-11-10 | 1989-11-10 | Non-contact DC feeding circuit voltage detector |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2563126Y2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116500096A (en) * | 2023-03-16 | 2023-07-28 | 爱优特空气技术（上海）有限公司 | Quality detection method for built-in power supply micro-static device |
| US12105044B1 (en) | 2023-03-16 | 2024-10-01 | Airquality Technology (Shanghai) Co., Ltd. | Quality detection method for microelectrostatic device with built-in power supply |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56160228A (en) * | 1980-05-16 | 1981-12-09 | Mitsubishi Electric Corp | Service interruption controlling method of electric train section |
| JPS57146075U (en) * | 1981-03-11 | 1982-09-13 | ||
| JPS6456241A (en) * | 1987-08-26 | 1989-03-03 | Hitachi Ltd | Power feed system for d.c. power railway |
-
1989
- 1989-11-10 JP JP1989131328U patent/JP2563126Y2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0370366U (en) | 1991-07-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |