JP4041558B2

JP4041558B2 - Switch attached to the voltage regulator

Info

Publication number: JP4041558B2
Application number: JP21145397A
Authority: JP
Inventors: 功小野寺; 久晴加藤
Original assignee: Nippon Kouatsu Electric Co
Current assignee: Nippon Kouatsu Electric Co
Priority date: 1997-08-06
Filing date: 1997-08-06
Publication date: 2008-01-30
Anticipated expiration: 2017-08-06
Also published as: JPH1154000A

Description

【０００１】
【発明の属する技術分野】
本願発明は、高圧配電線路において、低下又は上昇した配電線路の電圧を正規の電圧に調整するための電圧調整器（ＳＶＲ）に併設され、第一には電圧調整器への通電状態、第二には本線通電（短絡）状態、第三には電圧調整器課電並びに本線通電（短絡）状態の３状態の切替操作を行えるように改良した開閉器に関するものである。
【０００２】
【従来の技術】
負荷側の需要家に対し一定電圧で給電する機能を有する電圧調整器（ＳＶＲ）１００として、従来図１１に示すような開閉器１０１に併設したものがある。この併設された開閉器１０１（側路開閉器）は、３つの開閉部１０２，１０３，１０４から構成され、これらの開閉部の内、第２開閉部１０３と第３開閉部１０４は、その双方共開操作又は双方共閉操作になるように連動しており、開閉部１０３，１０４を投入操作して電圧調整器１００への通電（ただし本線１０５，１０６は開閉部１０２を開放して通電停止）を行う状態と、開閉部１０２を投入操作して本線１０５，１０６への通電（ただし電圧調整器１００は開閉部１０３，１０４を開放して通電停止）を行う状態の２状態の切替が行えるようになっている。つまり、電圧調整器の保守点検時や取替時には、電圧調整器１００を無電圧状態にするとともに負荷側の需要家に対しては送電を停止しないようになっている。
【０００３】
【発明が解決しようとする課題】
ところで上記電圧調整器１００については、保守点検や取替の際にタップ切替装置１０７等の動作確認を行うが、上記従来の構成においては、保守点検や取り替え時には、電圧調整器１００が第２開閉部１０３と第３開閉部１０４の開放によって線路から切り離された状態にあるため、制御回路１０８を駆動させるための制御用電源の確保ができない。したがって従来はこの電源を、近接の配電線にその都度接続して確保したり、携帯用発電機により確保するようにしていたため保守点検や取替に時間がかかり作業性が悪いと言う問題があった。なお、図１１において１０９は電源用変圧器を示す。
【０００４】
また、電圧調整器１００に併設する開閉器１０１については、各開閉部１０２，１０３，１０４に夫々操作機構を具備させてこれらの操作機構を連動させているため構造が複雑になり大形化、重量化、コストアップ等が避けられないと言う問題があった。
【０００５】
本願発明の目的は上記問題点を解決するためのもので、従来の電圧調整器への通電（ただし本線は開放して通電停止）状態と本線通電（ただし電圧調整器は開放して通電停止）状態の２状態の基本的な切替操作が行える上にさらに本線通電状態で電圧調整器への課電（ただし負荷側の本線とは切り離されて無負荷）状態の切換操作ができるようにすることで、電圧調整器の保守点検時や取替の際に制御用電源が確保できるようにした新規な電圧調整器に併設する開閉器（側路開閉器）を提案するものである。
【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、本願の第１の発明は、高圧配電線（５）の電源側（５ａ）と負荷側（５ｂ）との間に配設された第１開閉部（２５）の開閉操作と、第１開閉部（２５）の電源側と電圧調整器（１２）の１次側端子（１３）との間に配設された第２開閉部（２６）の開閉操作と、電圧調整器の２次側端子（２０）と上記第１開閉部（２５）の負荷側との間に配設された第３開閉部（２７）の開閉操作とを切替操作できるようにし、而も第１開閉部（２５）が開路状態で第２開閉部（２６）及び第３開閉部（２７）が閉路状態である電圧調整器（１２）への通電状態と、第１開閉部（２５）が閉路状態で第２開閉部（２６）及び第３開閉部（２７）が開路状態の本線通電（短絡）状態と、第１開閉部（２５）が閉路状態で第２開閉部（２６）が閉路状態で第３開閉部（２７）が開路状態の電圧調整器課電並びに本線通電（短絡）状態との３態様の切替開閉操作ができる開閉部から構成されていることを特徴とするものである。
【０００７】
また、第２の発明は、上記第１の発明において、第１開閉部（２５）と第２開閉部（２６）と第３開閉部（２７）とを１つの操作軸（２８）で切替開閉操作するようにしたことを特徴とするものである。
【０００８】
更に第３の発明は、上記第１又は第２の発明において、上記第１開閉部乃至第３開閉部の構成が、高圧配電線（５）の電源側（５ａ）に接続する第１固定電極（７）をケース（２）の一方の側面（２ａ）の上部に配置し、また電圧調整器（１２）の一次側端子（１３）に接続する第３固定電極（１５）を、第１、第２可動電極（２３）、（２４）が、第１開閉部（２５）を開路状態から閉路状態にする回転方向における上記第１固定電極（７）の前方に位置するように第１固定電極（７）の下部に配置し、電圧調整器（１２）の２次側端子（２０）に接続する第５固定電極（２１）を、第１、第２可動電極（２３）、（２４）の上記の回転方向における上記第３固定電極（１５）の前方に位置するように第３固定電極（１５）に対向してケース（２）の他方の側面（２ｂ）の下部に配置し、また、高圧配電線（５）の負荷側（５ｂ）に接続する第２固定電極（１０）を、第１、第２可動電極（２３）、（２４）の上記回転方向における上記第５固定電極（２１）の前方に位置するように上記第１固定電極（７）に対向してケース（２）の他方の側面（２ｂ）の上部に配置し、また制限抵抗（１６）を介して第１固定電極（７）に接続する第４固定電極（１７）を、第１、第２可動電極（２３）、（２４）の上記回転方向における前方に位置する第１の固定電極（７）と後方に位置する第２固定電極（１０）の間において配置されるようにケース（２）内に設け、これら各固定電極を同一半径（同一円周）上に夫々固定配置すると共にさらにこれら固定電極の中心には操作軸（２８）と一体の絶縁性の回転体（２２）を設け、而もこの回転体（２２）には同回転体（２２）の回動時、第１可動電極（２３）と第２可動電極（２４）とを、第１開閉部（２５）が開路状態で第２開閉部（２６）及び第３開閉部（２７）が閉路状態である電圧調整器（１２）への通電状態においては第１可動電極（２３）が第２、第５固定電極（１０）（２１）間を短絡すると共に第２可動電極（２４）が第１、第３、第４の固定電極（７）（１５）（１７）間を短絡し、また、第１開閉部（２５）が閉路状態で第２開閉部（２６）及び第３開閉部（２７）が開路の本線通電（短絡）状態においては第１可動電極（２３）が第１、第２、第４の固定電極（７）（１０）（１７）間を短絡すると共に第２可動電極（２４）が第３固定電極（１５）に接触し、また、第１開閉部（２５）が閉路状態で第２開閉部（２６）が閉路状態で第３開閉部（２７）が開路状態の電圧調整器課電並びに本線通電（短絡）状態においては第１可動電極（２３）が第１、第２、第３、第４の固定電極（７）（１０）（１５）（１７）間を短絡すると共に第２可動電極（２４）が各固定電極から離間するようにして取付固定されていることを特徴とするものである。
【０００９】
【発明の実施の形態】
図１乃至図１０に示す実施例に基づき本願発明の実施形態について説明する。
図１は本発明の配線状態を示す略図で、開閉器１におけるケース２の電源側端子６には本線である高圧配電線５の電源側５ａが接続され、負荷側端子９には本線である高圧配電線５の負荷側５ｂが接続されている。上記両端子６，９間は、上記従来の第１開閉部１０２に該当する第１開閉部２５により通電、遮断可能に構成されている。
【００１０】
上記開閉器１には上記従来の電圧調整器１００に該当する電圧調整器１２が併設されており、その１次側端子１３と電源側端子１４とが切り離し可能に接続され、２次側端子２０と負荷側端子１９とが切り離し可能に接続されている。
更に、開閉器１内には、上記電源側端子６，１４間の電路を開閉する第２開閉部２６が設けられているとともに負荷側端子９，１９間の電路を開閉する第３開閉部２７が設けられており、これらは上記従来の開閉部１０３，１０４に該当する。
上記電圧調整器１２には従来と同様の制御回路３０、タップ切替装置３１、電源用変圧器２９等が内蔵されている。
【００１１】
上記開閉器１の構造について図２により詳述する。
図２において、１は本願発明の開閉器を示すもので、その開閉器１を形成するステンレスケース等からなる密閉ケース２内にはＳＦ６ガス等の消弧性ガス３が所定圧力充填されている。ケース２の左側面２ａの上部には電源側ブッシング４が貫装されており、これに電源側の高圧配電線５ａに接続した電源側端子６が挿通され、そのケース内端側には第１固定電極７が固設されている。ケース２の右側面２ｂの上部には上記電源側ブッシング４に対向して負荷側ブッシング８が貫通されており、これに負荷側の高圧配電線５ｂに接続した負荷側端子９が挿通され、そのケース内端側には第２固定電極１０が固設されている。ケース２の左側面２ａの下部には電圧調整器用の１次側ブッシング１１が貫装されており、これに電圧調整器１２の１次側端子１３に接続した電源側端子１４が挿通され、そのケース内端側には第３固定電極１５が固設されている。ケース２内の上部にはリアクトル或いは抵抗等の限流抵抗１６と、第４固定電極１７が固設されており、その抵抗１６が上記第１固定電極７と第４固定電極１７間を常時接続した状態で設けられている。
【００１２】
ケース２の右側面２ｂの下部には電圧調整器用の２次側ブッシング１８が貫装されており、これに電圧調整器１２の２次側端子２０に接続した負荷側端子１９が挿通され、そのケース内端側には第５固定電極２１が固設されている。
以上各端子或いは支持碍子を介してケースに固設した第１乃至第５固定電極７，１０，１５，１７，２１の各接触片は後述のブレード形の可動電極２３，２４が挟持可能なクリップ形からなるもので、これらの固定電極７，１０，１５，１７，２１は絶縁部材からなる回転体２２並びに操作軸２８を中心にして同一円周上に配置され、また、各固定電極相互間は適宜絶縁距離を確保すべく離間した状態で設けられている。
【００１３】
上記操作軸２８は、上記各固定電極間の中心に位置してケース２に回転可能に備えられ、ケース２内の該軸２８には回転体２２が固着されている。該回転体２２には半月板状（ブレード形）の大小２つの第１可動電極２３と第２可動電極２４が固着されている。回転体２２を中心に対称的且つ同一円周上に設けられた第１可動電極２３と第２可動電極２４は、回動時に回動軌跡上（同一円周上）に配置された上記各固定電極７，１０，１５，１７，２１に対応してこれらと接触或いは離間して電路開閉（切替）が行われるようになっている。
【００１４】
つまり、電圧調整器１２への通電（ただし本線は開放）状態（図３及び図４の状態）において、第１可動電極２３は第２、第５の固定電極１０，２１間を短絡すると共に第２可動電極２４は第３、第１、第４の各固定電極１５，７，１７間を短絡し、また、切替操作により本線通電（ただし電圧調整器は開放）状態（図７及び図８の状態）においては、第１可動電極２３は第１、第４、第２の各固定電極７，１７，１０間を短絡すると共に第２可動電極２４は第３固定電極１５にのみ接触して隣接する第１固定電極７及び第５固定電極２１から離間し、さらに本線通電状態で電圧調整器１２への通電（ただし負荷側の本線とは切り離されて無負荷）状態（図９及び図１０の状態）においては、第１可動電極２３は、第３、第１、第４、第２の各固定電極１５，７，１７，１０間を短絡すると共に第２可動電極２４は隣接する第３固定電極１５と第５固定電極２１から離間するように第１可動電極２３と第２可動電極２４はその形状及び長さが設定されている。
【００１５】
なお、上記において第１固定電極７と第２固定電極１０と第１可動電極２３で図１に示す本線（電源側高圧配電線と負荷側高圧配電線）の投入・開放を行うための第１開閉部２５を、また、第１固定電極７と第３固定電極１５と第２可動電極２４（または第１可動電極２３と第３固定電極１５）とで図１に示す電圧調整器１２の１次側の投入・開放を行うための第２開閉部２６を、さらにまた第２固定電極１０と第５固定電極２１と第１可動電極２３とで図１に示す電圧調整器１２の２次側の投入・開放を行うための第３開閉部２７を構成している。なお、上記第１可動電極２３、第２可動電極２４を回動させるための回転体２２と一体の操作軸２８は同軸２８に操作機構を介して連結する図示外の操作ハンドルにより操作されることで時計或いは反時計方向に回動するようになっている。
【００１６】
次に本願発明による開閉器の動作について図２乃至図１０を中心に説明する。
図３及び図４は、電圧調整器１２への通電が行われている電圧調整器通電状態を示すもので、この場合は、第２可動電極２４が第１、第３、第４固定電極７，１５，１７間を短絡した状態にあり、また第１可動電極２３が第２固定電極１０、第５固定電極２１間を短絡した状態にある。そのため、電源側の高圧配電線５ａ−第１固定電極７−第２可動電極２４−第３固定電極１５−電圧調整器１２の１次側端子１３−電圧調整器１２の２次側端子２０−第５固定電極２１−第１可動電極２３−第２固定電極１０−負荷側の高圧配電線路５ｂなる電路（第１開閉部２５が開放した状態で第２開閉部２６及び第３開閉部２７が閉路した状態）が形成されている。
【００１７】
なお、第１固定電極７と第４固定電極１７間に接続された制限抵抗１６は上記通電経路に対し並列接続の関係になるが上記電路のインピーダンスに比して高抵抗のため、該制限抵抗１６が介在する電路には電流は実質的に流れない。該状態において負荷側の高圧配電線５ｂの電圧は高圧配電線５（本線）に直列に介設された電圧調整器１２により、調整されている。
【００１８】
かかる電圧調整状態において、電圧調整器１２を点検する場合は、図示外の操作ハンドルを操作して回転体２２を反時計方向に回転させる。すると、第１可動電極２３と第２可動電極２４がそれにより同じく反時計方向に回動し、図５の切替途中前半状態になる。つまり、図３の電圧調整器通電状態から回転体２２が回動すると第２可動電極２４の左先端部２４ａが回動に伴って第４固定電極１７から離間し、第１固定電極７と第３固定電極２４間を短絡した状態となる。また、第１可動電極２３が上記第２可動電極２４が離間した後の第４固定電極１７に対しその先端部２３ａを挿入して、第４固定電極１７、第２固定電極１０、第５固定電極２１間が短絡した状態となる。
【００１９】
つまり、図５の状態においては、電源側高圧配電線５ａ−第１固定電極７−第２可動電極２４−第３固定電極１５−電圧調整器１２の１次側端子１３−電圧調整器１２の２次側端子２０−第５固定電極２１−第１可動電極２３−第２固定電極１０−負荷側高圧配電線路５ｂの通電経路（電圧調整器通電状態）と、電源側高圧配電線５ａ−制限抵抗１６−第４固定電極１７−第１可動電極２３−第２固定電極１０−負荷側高圧配電線５ｂの通電経路（本線通電状態）と、さらに第１固定電極７−第２可動電極２４−第３固定電極１５−電圧調整器１２の１次側端子１３−電圧調整器１２の２次側端子２０−第５固定電極２１−第１可動電極２３−第４固定電極１７−制限抵抗１６−第１固定電極７に至る通電経路（循環電流通電状態）の３つの通電経路が形成されるもので、前者の通電経路により電圧調整器１２を介してそのまま負荷側高圧配電線５ｂへは継続して通電が行われ、後者２つの通電経路には上記の如く制限抵抗１６が介在することになるため、通電電流は同抵抗１６により制限され実質的に流れない。特に上記において開閉器１と電圧調整器１２との間で循環電流経路が形成された状態（循環電流通電状態）において、電源側高圧配電線５ａと負荷側高圧配電線５ｂとの間の電位差により循環電流が流れようとしても同経路には上記の如く制限抵抗１６を介在させているためこの循環電流が制限され、電圧調整器の巻線の焼損等が防止される。
【００２０】
そして上記図５の切替途中の前半状態からさらに回転体２２を反時計方向に回動して図６の切替途中の後半状態になると第２可動電極２４が第１固定電極７から離間し、電圧調整器１２への通電が遮断される（第２開閉部２６が開放する）。また、第１可動電極２３はその下端部２３ｂが第５固定電極２１から離間して電圧調整器１２を切り離す（第３開閉部２７が開放する）と共に第１可動電極２３は第４固定電極１７と第２固定電極１０間を短絡する。つまり、電圧調整器１２への通電が上記の如く遮断されると共に電源側高圧配電線路５ａ−制限抵抗１６−第４固定電極１７−第１可動電極２３−第２固定電極１０−電源側高圧配電線５ｂの通電経路が形成される。
【００２１】
そして図７及び図８に示すように回転体２２がさらに反時計方向に回動すると第１可動電極２３の先端部２３ａが第１固定電極７に挿入して接触し、第１可動電極２３は第１固定電極７、第４固定電極１７、第２固定電極１０間を短絡状態にする。つまり、電源側高圧配電線５ａ−第１固定電極７−第１可動電極２３−第４固定電極１７−第２固定電極１０−負荷側高圧配電線５ｂの通電経路が形成され本線側に通電経路が切り替わる（本線通電状態）。なお、第１固定電極７−制限抵抗１６−第４固定電極１７の通電経路がこの場合形成されるが、この通電経路には制限抵抗１６が介在するため、電流は実質的に流れない。
【００２２】
そして、図７及び図８の本線通電状態において、電圧調整器１２を点検するする場合には、さらに操作ハンドルを操作して回転体２２を反時計方向に回動させると、図９及び図１０に示すように第１可動電極２３の先端部２３ａが第３固定電極１５に挿入して接触し、第１可動電極２３により第３固定電極１５、第１固定電極７、第４固定電極１７、第２固定電極１０間が短絡される。
【００２３】
つまり、本線へは電源側高圧配電線５ａ−第１固定電極７−第１可動電極２３−第２固定電極１０の通電経路（第１開閉部２５が閉路された状態）が形成され通電が継続されると共に第１固定電極７−第１可動電極２３−第３固定電極１５の通電経路（第２開閉部が閉路された状態）が形成され、電圧調整器１２の１次側端子１３は電圧が印加された状態となる。また、この場合、第２可動電極２４の先端部２４ａが第３固定電極１５から離間して同電極２４は両側の隣接する第３固定電極１５と第５固定電極２１から離間して両固定電極間の中間に位置して電気的に切り離された状態となり、電圧調整器１２の２次側端子２０は無負荷状態となる（電圧調整器課電並びに本線通電状態）。
【００２４】
かかる場合、上記の如く第３固定電極１５が電圧印加（課電）状態にあるため、制御用電源が確保できる。つまり、第３固定電極１５が課電状態にあるため同電極に接続する電圧調整器１２に具備する電源用変圧器２９も課電されて制御回路３０は使用可能となり、上記制御用電源の確保によりこの切替状態においても電圧調整器１２のタップ切替装置３１等の動作試験を確認することができる。
【００２５】
なお、操作軸２８を上記とは逆に時計方向に回動するようにすれば、図９の電圧調整器課電並びに本線通電（短絡）状態から図７の本線通電（短絡）状態さらには図３の電圧調整器への通電状態の３態様について順次切替開閉操作ができることは当然である。
【００２６】
【発明の効果】
以上説明したように本願発明の開閉器においては電圧調整器の保守や点検の際に該電圧調整器を配電線路から切り離す場合も電圧調整器と並列の第１開閉部により負荷側の高圧配電線路に対し継続送電がきるため負荷側を停電させることが無い。
【００２７】
更に、電圧調整器の保守点検時においては第１開閉部を閉路に、第２開閉部を閉路に、第３開閉部を開路状態にして電圧調整器課電並びに本線通電（短絡）状態に切替操作できるようにしたので、従来のように制御用電源確保のための面倒な接続作業が不要となり作業性が向上する。
【００２８】
また、請求項２の発明においては、上記の切替操作が１本の操作軸で行え、切替操作が容易に行える。
また、請求項３の発明においては第１乃至第３の開閉部の構成が、同一半径（同一円周）上に配置した各固定電極とこれら固定電極の中心に位置する回転体に固定した可動電極を対応させそして可動電極を回動させて開閉（切替操作）する方式のため開閉操作が円滑に行える。
【００２９】
更に請求項３の発明においては上記の如く固定電極が円周上に配置されこれと接触或いは開離する可動電極がその中心に配置される構成のため限られたケース内空間を有効に利用でき開閉器の小型化ができる。
【図面の簡単な説明】
【図１】本発明の開閉器と電圧調整器の配線状態を示す図。
【図２】本発明の開閉器を示す断面図。
【図３】本発明の開閉器において、本線が開放され電圧調整器が通電されている状態を示す説明図。
【図４】図３の状態の略図。
【図５】図４の状態から両可動電極が回転した途中の状態を示す説明図。
【図６】図５の状態から更に両可動電極が回転した途中の状態を示す説明図。
【図７】図６の状態から更に両可動電極が回転して本線通電状態、電圧調整器の開路状態を示す説明図。
【図８】図７の状態の略図。
【図９】図７の状態から更に両可動電極が回転して本線通電、電圧調整器の通電状態を示す説明図。
【図１０】図９の状態の略図。
【図１１】従来の開閉器と電圧調整器の配線状態を示す図。[0001]
BACKGROUND OF THE INVENTION
The present invention is provided in a voltage regulator (SVR) for adjusting the voltage of a lowered or raised distribution line to a normal voltage in a high-voltage distribution line. The present invention relates to an improved switch that can be switched between three states: a main line energization (short circuit) state, and a third, voltage regulator charging and main line energization (short circuit) state.
[0002]
[Prior art]
As a voltage regulator (SVR) 100 having a function of supplying power to a consumer on the load side with a constant voltage, there is one conventionally provided in a switch 101 as shown in FIG. This side switch 101 (side switch) is composed of three open / close sections 102, 103, and 104. Among these open / close sections, the second open / close section 103 and the third open / close section 104 are both of them. Energized to the voltage regulator 100 by turning on the open / close sections 103 and 104 (however, the main lines 105 and 106 open the open / close section 102 and stop energizing. ) And a state in which the main line 105, 106 is energized by turning on the switching unit 102 (however, the voltage regulator 100 opens the switching units 103, 104 and stops energization). It is like that. That is, at the time of maintenance inspection or replacement of the voltage regulator, the voltage regulator 100 is brought into a no-voltage state and power transmission is not stopped to the load-side consumer.
[0003]
[Problems to be solved by the invention]
By the way, with respect to the voltage regulator 100, the operation of the tap switching device 107 or the like is checked at the time of maintenance inspection or replacement. However, in the above-described conventional configuration, the voltage regulator 100 is secondly opened and closed at the time of maintenance inspection and replacement. Since the part 103 and the third opening / closing part 104 are disconnected from the line, the control power source for driving the control circuit 108 cannot be secured. Therefore, in the past, this power supply was secured by connecting it to a nearby distribution line each time, or secured by a portable generator, so there was a problem that maintenance inspection and replacement took time and workability was poor. It was. In FIG. 11, reference numeral 109 denotes a power transformer.
[0004]
In addition, the switch 101 provided in addition to the voltage regulator 100 is provided with an operation mechanism in each of the opening / closing sections 102, 103, and 104, and these operation mechanisms are interlocked to make the structure complicated and large. There has been a problem that weight increase and cost increase cannot be avoided.
[0005]
The purpose of the present invention is to solve the above-mentioned problems. Current supply to the voltage regulator (however, the main line is opened and turned off) and the current line is turned on (however, the voltage regulator is opened and turned off) In addition to being able to perform basic switching operations in two states, it is also possible to perform switching operations of the voltage regulator to the voltage regulator in the mains energized state (but disconnected from the main line on the load side). Thus, the present invention proposes a switch (side switch) that is provided in addition to a new voltage regulator that can secure a control power source at the time of maintenance and inspection of the voltage regulator.
[0006]
[Means for Solving the Problems]
In order to solve the above problems, the first invention of the present application is the first opening / closing part (25) disposed between the power supply side (5a) and the load side (5b) of the high-voltage distribution line (5). An opening / closing operation of the second opening / closing portion (26) disposed between the power supply side of the first opening / closing portion (25) and the primary side terminal (13) of the voltage regulator (12), The switching operation of the third opening / closing part (27) disposed between the secondary terminal (20) of the voltage regulator and the load side of the first opening / closing part (25) can be switched. In addition, the energization state to the voltage regulator (12) in which the first opening / closing portion (25) is in the open state and the second opening / closing portion (26) and the third opening / closing portion (27) are in the closed state, and the first opening / closing portion (25 ) and the second closing part (26) and the third closing unit (27) is a main line current (short-circuit) state of open circuit in closed condition, the first closing portion (25) of the second opening in closed state (26) is a closed state, and the third opening / closing part (27) is composed of an opening / closing part capable of switching opening / closing operation in three modes: voltage regulator charging and main line energization (short circuit) state in the open circuit state. It is what.
[0007]
Further, according to a second aspect, in the first aspect, the first opening / closing part (25), the second opening / closing part (26), and the third opening / closing part (27) are switched by a single operation shaft (28). It is characterized by being operated.
[0008]
Furthermore, the third invention is the first or second invention, wherein the first opening / closing part to the third opening / closing part are connected to the power supply side (5a) of the high-voltage distribution line (5). (7) is disposed on the upper side of one side surface (2a) of the case (2), and the third fixed electrode (15) connected to the primary terminal (13) of the voltage regulator (12) is connected to the first, The first fixed electrode so that the second movable electrodes (23), (24) are located in front of the first fixed electrode (7) in the rotational direction that changes the first opening / closing part (25) from the open state to the closed state. The fifth fixed electrode (21) arranged at the lower part of (7) and connected to the secondary terminal (20) of the voltage regulator (12) is connected to the first and second movable electrodes (23), (24). cable to face the third fixed electrode (15) to be located in front of the third stationary electrode in the rotational direction of the (15) Disposed below the other side of (2) (2b), also high-voltage distribution line and the second fixed electrode connected to the load side of (5) (5b) (10 ), first, second movable electrode ( 23) of the other side surface (2b) of the case (2) facing the first fixed electrode (7) so as to be positioned in front of the fifth fixed electrode (21) in the rotational direction of (24 ). The fourth fixed electrode (17) arranged on the upper part and connected to the first fixed electrode (7) through the limiting resistor (16) is connected to the first and second movable electrodes (23) and (24). Are provided in the case (2) so as to be disposed between the first fixed electrode (7) located in the front in the direction and the second fixed electrode (10) located in the rear, and each of these fixed electrodes has the same radius ( Are fixedly arranged on the same circumference), and the operation shaft (28) is provided at the center of these fixed electrodes. An integral insulating rotating body (22) is provided, and the rotating body (22) has a first movable electrode (23) and a second movable electrode (24) when the rotating body (22) is rotated. In the energized state of the voltage regulator (12) in which the first opening / closing portion (25) is in the open state and the second opening / closing portion (26) and the third opening / closing portion (27) are in the closed state, the first movable electrode ( 23) short-circuits between the second and fifth fixed electrodes (10) and (21), and the second movable electrode (24) extends between the first, third and fourth fixed electrodes (7), (15) and (17). In addition, when the first opening / closing part (25) is in the closed state and the second opening / closing part (26) and the third opening / closing part (27) are in the main line energization (short-circuiting) state, the first movable electrode (23) Short-circuits the first, second, and fourth fixed electrodes (7), (10), and (17), and the second movable electrode (24) contacts the third fixed electrode (15). In addition, the voltage regulator is charged and the main line is energized (short-circuited) when the first opening / closing part (25) is closed, the second opening / closing part (26) is closed, and the third opening / closing part (27) is open. The first movable electrode (23) short-circuits the first, second, third, and fourth fixed electrodes (7), (10), (15), and (17), and the second movable electrode (24) It is mounted and fixed so as to be separated from the fixed electrode.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
An embodiment of the present invention will be described based on the examples shown in FIGS.
FIG. 1 is a schematic diagram showing the wiring state of the present invention. The power source side 6 of the case 2 in the switch 1 is connected to the power source side 5a of the high voltage distribution line 5 which is the main line, and the load side terminal 9 is the main line. The load side 5b of the high voltage distribution line 5 is connected. Between the two terminals 6 and 9, the first opening / closing part 25 corresponding to the conventional first opening / closing part 102 can be energized and cut off.
[0010]
The switch 1 is provided with a voltage regulator 12 corresponding to the conventional voltage regulator 100, and the primary side terminal 13 and the power source side terminal 14 are detachably connected, and the secondary side terminal 20. And the load side terminal 19 are detachably connected.
Further, the switch 1 is provided with a second opening / closing portion 26 for opening / closing the electric circuit between the power supply side terminals 6, 14 and a third opening / closing portion 27 for opening / closing the electric circuit between the load side terminals 9, 19. These correspond to the conventional open / close sections 103 and 104 described above.
The voltage regulator 12 includes a control circuit 30, a tap switching device 31, a power supply transformer 29, and the like similar to the conventional one.
[0011]
The structure of the switch 1 will be described in detail with reference to FIG.
In FIG. 2, reference numeral 1 denotes a switch according to the present invention. An arc-extinguishing gas 3 such as SF6 gas is filled in a sealed case 2 made of a stainless steel case or the like forming the switch 1 with a predetermined pressure. . A power supply side bushing 4 is inserted in the upper part of the left side surface 2a of the case 2, and a power supply side terminal 6 connected to the high voltage distribution line 5a on the power supply side is inserted through the bushing 4, and a first side is provided on the inner end side of the case. A fixed electrode 7 is fixed. A load side bushing 8 is passed through the upper portion of the right side surface 2b of the case 2 so as to face the power supply side bushing 4, and a load side terminal 9 connected to the high voltage distribution line 5b on the load side is inserted therethrough. A second fixed electrode 10 is fixed on the inner end side of the case. A primary side bushing 11 for a voltage regulator is inserted under the left side surface 2a of the case 2, and a power supply side terminal 14 connected to the primary side terminal 13 of the voltage regulator 12 is inserted through the bushing 11, A third fixed electrode 15 is fixed on the inner end side of the case. A current limiting resistor 16 such as a reactor or a resistor and a fourth fixed electrode 17 are fixed on the upper portion of the case 2, and the resistor 16 is always connected between the first fixed electrode 7 and the fourth fixed electrode 17. It is provided in the state.
[0012]
A secondary side bushing 18 for the voltage regulator is inserted under the right side surface 2b of the case 2, and a load side terminal 19 connected to the secondary side terminal 20 of the voltage regulator 12 is inserted through the bushing 18. A fifth fixed electrode 21 is fixed on the inner end side of the case.
The first to fifth fixed electrodes 7, 10, 15, 17, 21 fixed to the case via the respective terminals or supporting insulators are clips that can hold the blade-shaped movable electrodes 23, 24 described later. These fixed electrodes 7, 10, 15, 17, and 21 are arranged on the same circumference around the rotating body 22 made of an insulating member and the operation shaft 28, and between the fixed electrodes. Are provided in a separated state so as to ensure an appropriate insulation distance.
[0013]
The operation shaft 28 is positioned at the center between the fixed electrodes and is rotatably provided in the case 2. A rotating body 22 is fixed to the shaft 28 in the case 2. The rotating body 22 is fixed with a meniscus-shaped (blade-shaped) first and second movable electrodes 23 and 24. The first movable electrode 23 and the second movable electrode 24 provided symmetrically and on the same circumference with the rotating body 22 as the center are arranged on the rotation trajectory (on the same circumference) when rotating. Corresponding to the electrodes 7, 10, 15, 17, 21, the electric circuit is opened or closed (switched) in contact with or away from them.
[0014]
That is, in a state where the voltage regulator 12 is energized (however, the main line is open) (the state shown in FIGS. 3 and 4), the first movable electrode 23 short-circuits between the second and fifth fixed electrodes 10 and 21. 2 The movable electrode 24 short-circuits between the third, first, and fourth fixed electrodes 15, 7, and 17, and the main line energization (but the voltage regulator is open) by the switching operation (in FIGS. 7 and 8). In the state), the first movable electrode 23 short-circuits between the first, fourth, and second fixed electrodes 7, 17, and 10, and the second movable electrode 24 contacts only the third fixed electrode 15 and is adjacent thereto. The voltage regulator 12 is energized (but separated from the main line on the load side and no load) in the main line energized state (see FIG. 9 and FIG. 10). In the state), the first movable electrode 23 is in the third, first, fourth, second The first movable electrode 23 and the second movable electrode 24 are short-circuited between the fixed electrodes 15, 7, 17, and 10, and the second movable electrode 24 is separated from the adjacent third fixed electrode 15 and fifth fixed electrode 21. Its shape and length are set.
[0015]
In the above, the first fixed electrode 7, the second fixed electrode 10, and the first movable electrode 23 are used to input and open the main line (power supply side high voltage distribution line and load side high voltage distribution line) shown in FIG. The opening / closing part 25 is also composed of the first fixed electrode 7, the third fixed electrode 15, and the second movable electrode 24 (or the first movable electrode 23 and the third fixed electrode 15). The second opening / closing part 26 for performing the closing / opening of the secondary side, and the secondary side of the voltage regulator 12 shown in FIG. 1 by the second fixed electrode 10, the fifth fixed electrode 21, and the first movable electrode 23 are also provided. The third opening / closing part 27 is configured to perform charging / discharging. The operation shaft 28 integrated with the rotating body 22 for rotating the first movable electrode 23 and the second movable electrode 24 is operated by an operation handle (not shown) connected to the coaxial 28 via an operation mechanism. It is designed to turn clockwise or counterclockwise.
[0016]
Next, the operation of the switch according to the present invention will be described with reference to FIGS.
3 and 4 show a voltage regulator energization state in which the voltage regulator 12 is energized. In this case, the second movable electrode 24 is the first, third, and fourth fixed electrodes 7. 15 and 17 are short-circuited, and the first movable electrode 23 is short-circuited between the second fixed electrode 10 and the fifth fixed electrode 21. Therefore, the high-voltage distribution line 5a on the power source side—the first fixed electrode 7—the second movable electrode 24—the third fixed electrode 15—the primary terminal 13 of the voltage regulator 12—the secondary terminal 20 of the voltage regulator 12— 5th fixed electrode 21-1st movable electrode 23-2nd fixed electrode 10-electric circuit (the 2nd opening-and-closing part 26 and the 3rd opening-and-closing part 27 in the state where the 1st opening-and-closing part 25 opened) Closed state) is formed.
[0017]
The limiting resistor 16 connected between the first fixed electrode 7 and the fourth fixed electrode 17 is connected in parallel with the energizing path, but has a higher resistance than the impedance of the electric path. No current substantially flows through the electric circuit 16 intervening. In this state, the voltage of the high-voltage distribution line 5b on the load side is adjusted by a voltage regulator 12 interposed in series with the high-voltage distribution line 5 (main line).
[0018]
When checking the voltage regulator 12 in this voltage adjustment state, the rotating handle 22 is rotated counterclockwise by operating an operation handle (not shown). Then, the 1st movable electrode 23 and the 2nd movable electrode 24 are similarly rotated counterclockwise, and will be in the halfway state in the middle of the switching of FIG. That is, when the rotating body 22 rotates from the state where the voltage regulator is energized in FIG. 3, the left tip 24a of the second movable electrode 24 is separated from the fourth fixed electrode 17 along with the rotation, and the first fixed electrode 7 and the first fixed electrode 7 The three fixed electrodes 24 are short-circuited. Further, the first movable electrode 23 is inserted into the fourth fixed electrode 17 after the second movable electrode 24 is separated from the fourth fixed electrode 17, and the fourth fixed electrode 17, the second fixed electrode 10, and the fifth fixed electrode 17 are inserted. The electrodes 21 are short-circuited.
[0019]
That is, in the state of FIG. 5, the power supply side high-voltage distribution line 5 a -the first fixed electrode 7 -the second movable electrode 24 -the third fixed electrode 15 -the primary side terminal 13 of the voltage regulator 12 -the voltage regulator 12 Secondary side terminal 20-fifth fixed electrode 21-first movable electrode 23-second fixed electrode 10-energization path (voltage regulator energization state) of load side high voltage distribution line 5b and power supply side high voltage distribution line 5a-restriction Resistor 16-fourth fixed electrode 17-first movable electrode 23-second fixed electrode 10-energization path (main line energization state) of the load side high-voltage distribution line 5b, and further, first fixed electrode 7-second movable electrode 24- Third fixed electrode 15-Primary side terminal 13 of voltage regulator 12-Secondary side terminal 20 of voltage regulator 12-Fifth fixed electrode 21-First movable electrode 23-Fourth fixed electrode 17-Limiting resistor 16- Three energization paths (circulation current energization state) leading to the first fixed electrode 7 An electric path is formed, and the load-side high-voltage distribution line 5b is continuously energized as it is through the voltage regulator 12 by the former energization path, and the latter two energization paths have a limiting resistance as described above. Therefore, the energization current is limited by the resistor 16 and does not substantially flow. In particular, in the state where the circulating current path is formed between the switch 1 and the voltage regulator 12 (circulating current energized state), the potential difference between the power source side high voltage distribution line 5a and the load side high voltage distribution line 5b Even if the circulating current is about to flow, since the limiting resistor 16 is interposed in the path as described above, the circulating current is limited, and burning of the winding of the voltage regulator is prevented.
[0020]
Then, when the rotating body 22 is further rotated counterclockwise from the first half state in the middle of switching in FIG. 5 to reach the second half state in the middle of switching in FIG. 6, the second movable electrode 24 is separated from the first fixed electrode 7, and the voltage Energization to the regulator 12 is interrupted (the second opening / closing part 26 is opened). The first movable electrode 23 has a lower end 23b spaced from the fifth fixed electrode 21 to disconnect the voltage regulator 12 (the third opening / closing part 27 is opened), and the first movable electrode 23 is the fourth fixed electrode 17. And the second fixed electrode 10 are short-circuited. That is, energization to the voltage regulator 12 is interrupted as described above, and the power supply side high voltage distribution line 5a-the limiting resistor 16-the fourth fixed electrode 17-the first movable electrode 23-the second fixed electrode 10-the power supply side high voltage distribution. An energization path for the electric wire 5b is formed.
[0021]
7 and 8, when the rotating body 22 further rotates counterclockwise, the tip 23a of the first movable electrode 23 is inserted into and contacted with the first fixed electrode 7, and the first movable electrode 23 is The first fixed electrode 7, the fourth fixed electrode 17, and the second fixed electrode 10 are short-circuited. That is, the energization path of the power supply side high-voltage distribution line 5a-the first fixed electrode 7-the first movable electrode 23-the fourth fixed electrode 17-the second fixed electrode 10-the load-side high-voltage distribution line 5b is formed, and the energization path on the main line side. Switches (main line energized state). In this case, an energization path of the first fixed electrode 7 -the limiting resistor 16 -the fourth fixed electrode 17 is formed. However, since the limiting resistance 16 is interposed in this energization path, no current substantially flows.
[0022]
7 and 8, when the voltage regulator 12 is inspected, if the operating handle is further operated to rotate the rotating body 22 counterclockwise, FIGS. 9 and 10 are used. As shown in FIG. 4, the tip 23a of the first movable electrode 23 is inserted into and contacted with the third fixed electrode 15, and the first movable electrode 23 causes the third fixed electrode 15, the first fixed electrode 7, the fourth fixed electrode 17, The second fixed electrodes 10 are short-circuited.
[0023]
That is, an energization path (a state where the first opening / closing portion 25 is closed) of the power supply side high-voltage distribution line 5a-first fixed electrode 7-first movable electrode 23-second fixed electrode 10 is formed on the main line, and energization continues. In addition, an energization path (a state in which the second opening / closing part is closed) of the first fixed electrode 7 -the first movable electrode 23 -the third fixed electrode 15 is formed, and the primary side terminal 13 of the voltage regulator 12 is connected to the voltage Is applied. Further, in this case, the tip 24a of the second movable electrode 24 is separated from the third fixed electrode 15, and the electrode 24 is separated from the adjacent third fixed electrode 15 and the fifth fixed electrode 21 on both sides. The secondary terminal 20 of the voltage regulator 12 is in a no-load state (positioned in the voltage regulator and energized in the main line).
[0024]
In such a case, since the third fixed electrode 15 is in a voltage application (power application) state as described above, a control power source can be secured. That is, since the third fixed electrode 15 is in an applied state, the power transformer 29 provided in the voltage regulator 12 connected to the electrode is also applied and the control circuit 30 can be used. Thus, even in this switching state, the operation test of the tap switching device 31 and the like of the voltage regulator 12 can be confirmed.
[0025]
If the operation shaft 28 is rotated clockwise as opposed to the above, the voltage regulator charging and main line energization (short circuit) state of FIG. 9 to the main line energization (short circuit) state of FIG. As a matter of course, the switching operation can be sequentially performed for the three modes of the energization state of the voltage regulator 3.
[0026]
【The invention's effect】
As described above, in the switch of the present invention, even when the voltage regulator is disconnected from the distribution line during maintenance or inspection of the voltage regulator, the load-side high-voltage distribution line is provided by the first switch in parallel with the voltage regulator. On the other hand, there is no power outage on the load side because continuous power transmission is possible.
[0027]
In addition, when the voltage regulator is inspected, the first switch is closed, the second switch is closed, the third switch is opened, and the voltage regulator is switched to the main power supply (short circuit) state. Since it can be operated, the troublesome connection work for securing the power supply for control as in the prior art is unnecessary, and the workability is improved.
[0028]
In the invention of claim 2, the above switching operation can be performed with one operating shaft, and the switching operation can be easily performed.
According to a third aspect of the present invention, the configuration of the first to third opening / closing portions is a movable electrode fixed to each fixed electrode arranged on the same radius (same circumference) and a rotating body located at the center of these fixed electrodes. Opening and closing operations can be performed smoothly due to the method of opening and closing (switching operation) by causing the electrodes to correspond and rotating the movable electrode.
[0029]
Further, in the invention of claim 3, since the fixed electrode is arranged on the circumference and the movable electrode that contacts or separates from the circumference is arranged at the center, the limited space in the case can be used effectively. The switch can be downsized.
[Brief description of the drawings]
FIG. 1 is a diagram showing a wiring state of a switch and a voltage regulator according to the present invention.
FIG. 2 is a cross-sectional view showing a switch according to the present invention.
FIG. 3 is an explanatory diagram showing a state in which the main line is opened and the voltage regulator is energized in the switch according to the present invention.
4 is a schematic diagram of the state of FIG.
5 is an explanatory diagram showing a state in the middle of rotation of both movable electrodes from the state of FIG.
6 is an explanatory view showing a state in the middle of further rotation of both movable electrodes from the state of FIG.
7 is an explanatory view showing a state where a main line is energized and a voltage regulator is opened when both movable electrodes are further rotated from the state of FIG. 6;
8 is a schematic diagram of the state of FIG.
FIG. 9 is an explanatory diagram showing the main line energization and the energization state of the voltage regulator when both movable electrodes are further rotated from the state of FIG. 7;
10 is a schematic diagram of the state of FIG.
FIG. 11 is a diagram showing a wiring state of a conventional switch and a voltage regulator.

Claims

Opening / closing operation of the first opening / closing part (25) disposed between the power supply side (5a) and the load side (5b) of the high voltage distribution line (5), and the power supply side and voltage of the first opening / closing part (25) Opening / closing operation of the second opening / closing part (26) disposed between the primary side terminal (13) of the regulator (12), the secondary side terminal (20) of the voltage regulator and the first opening / closing part. It is possible to switch between opening and closing operations of the third opening / closing part (27) disposed between the load side of (25) and the second opening / closing part (25) when the first opening / closing part (25) is in the open state. 26) and the third opening / closing portion (27) are energized to the voltage regulator (12), and the first opening / closing portion (25) is closed and the second opening / closing portion (26) and the third opening / closing portion are closed. (27) and a main current (short-circuit) state of open circuit, the third switching unit in the second closing part by the first closing portion (25) is closed state (26) is closed state (27) is open circuit form Switch which houses that of and a voltage regulator Division collector and closing section capable third aspect of the switching-off operation of the mains current (short-circuit) state to the voltage regulator, characterized.

The first opening / closing part (25), the second opening / closing part (26), and the third opening / closing part (27) are switched and opened / closed by one operating shaft (28). A switch attached to the voltage regulator.

The configuration of the first opening / closing part to the third opening / closing part is such that the first fixed electrode (7) connected to the power supply side (5a) of the high-voltage distribution line (5) is the upper part of one side surface (2a) of the case (2). placed, and the voltage regulator of the third fixed electrode connected to the primary-side terminal (13) (12) (15), first, second movable electrode (23), (24), the first closing portion (25) is placed under the first fixed electrode (7) so as to be positioned in front of the first fixed electrode (7) in the rotation direction from the open circuit state to the closed circuit state, and the voltage regulator (12) 2 The fifth fixed electrode (21) connected to the secondary terminal (20) is positioned in front of the third fixed electrode (15) in the rotation direction of the first and second movable electrodes (23) and (24). opposite the third fixed electrode (15) so as to be disposed below the other side of the case (2) (2b), also, -Pressure load side of the electric wire (5) the second fixed electrode connected to the (5b) (10), first, second movable electrode (23), the fifth fixed electrode in the direction of rotation of (24) (21 The first fixed electrode is disposed on the other side surface (2b) of the case (2) so as to be positioned in front of the first fixed electrode (7) and through a limiting resistor (16). The fourth fixed electrode (17) connected to (7) is positioned rearward of the first fixed electrode (7) positioned forward in the rotational direction of the first and second movable electrodes (23), (24). Provided in the case (2) so as to be arranged between the second fixed electrodes (10) to be arranged, and each of these fixed electrodes is fixedly arranged on the same radius (same circumference), and at the center of these fixed electrodes. Is provided with an insulating rotating body (22) integral with the operating shaft (28). (22) includes the first movable electrode (23) and the second movable electrode (24) when the rotating body (22) is rotated, and the second opening / closing portion (25) when the first opening / closing portion (25) is open. 26) and the third opening / closing part (27) are in a closed state, the first movable electrode (23) is between the second and fifth fixed electrodes (10) (21) in the energized state to the voltage regulator (12). The second movable electrode (24) short-circuits between the first, third, and fourth fixed electrodes (7), (15), and (17), and the first opening / closing part (25) is closed when the first open / close section (25) is closed. When the second opening / closing part (26) and the third opening / closing part (27) are in the open-circuit main line energization (short circuit) state, the first movable electrode (23) is the first, second and fourth fixed electrodes (7) (10). (17) The second movable electrode (24) is in contact with the third fixed electrode (15) and the second opening / closing portion is closed when the first opening / closing portion (25) is closed. The first movable electrode (23) is in the first, second, third, in the voltage regulator charging and main line energization (short circuit) state in which the part (26) is closed and the third opening / closing part (27) is open. The fourth fixed electrodes (7), (10), (15), and (17) are short-circuited, and the second movable electrode (24) is attached and fixed so as to be separated from each fixed electrode. Item 3. A switch attached to the voltage regulator according to item 1 or 2.