JP2000021644A - Transformer equipped with three-phase tap switch which operates when loaded - Google Patents
Transformer equipped with three-phase tap switch which operates when loadedInfo
- Publication number
- JP2000021644A JP2000021644A JP10189145A JP18914598A JP2000021644A JP 2000021644 A JP2000021644 A JP 2000021644A JP 10189145 A JP10189145 A JP 10189145A JP 18914598 A JP18914598 A JP 18914598A JP 2000021644 A JP2000021644 A JP 2000021644A
- Authority
- JP
- Japan
- Prior art keywords
- phase
- transformer
- phase transformer
- load tap
- tap changer
- 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
- Housings And Mounting Of Transformers (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、三相負荷時タップ
切換器を備えた変圧器例えばガス絶縁変圧器を巻線と鉄
心および負荷タップ切換器等からなる単相変圧器に分割
して、それぞれ別々の単相変圧器タンクに収納して輸送
し、据付現地で組立てることにより、構成される分割輸
送形に好適な三相負荷時タップ切換器を備えた絶縁変圧
器に関するものである。The present invention relates to a transformer having a three-phase load tap changer, for example, a gas-insulated transformer divided into a single-phase transformer comprising a winding, an iron core, a load tap changer, and the like. The present invention relates to an insulated transformer having a three-phase on-load tap changer suitable for a divided transport type, which is housed in separate single-phase transformer tanks, transported, and assembled at an installation site.
【０００２】[0002]
【従来の技術】都市部の変電所に於いては、不燃化、難
燃化の面からガス絶縁変圧器が採用されるが、機器の大
容量化に伴い輸送寸法が制限されるため、三相負荷時タ
ップ切換器を備えたガス絶縁変圧器を巻線と鉄心および
負荷時タップ切換器からなる単相変圧器に分割して、そ
れぞれ別々の単相変圧器タンクに収納して輸送し、据付
現地で組立てることにより、分割輸送形三相負荷時タッ
プ切換器を備えたガス絶縁変圧器が採用されている。こ
れらの分割輸送形三相負荷時タップ切換器を備えた変圧
器の公知例として、実開平７−１８４２３号公報があ
る。2. Description of the Related Art In a substation in an urban area, a gas-insulated transformer is adopted in view of making it non-combustible and flame-retardant. The gas-insulated transformer with a phase load tap changer is divided into a single-phase transformer consisting of a winding, an iron core and a load tap changer, each of which is stored in a separate single-phase transformer tank and transported, By assembling at the installation site, a gas-insulated transformer equipped with a split transport three-phase load tap changer is employed. As a publicly known example of a transformer provided with the split transport type three-phase load tap changer, there is Japanese Utility Model Laid-Open No. 7-18423.
【０００３】この公知例では、絶縁油を使用する油入変
圧器への適用および巻線と鉄心等からなる単相変圧器に
分割して、それぞれ別々の単相タンクに収納して輸送
し、負荷時タップ切換器と単相変圧器とを据付現地でダ
クトの内部に収納する絶縁リード線により結線して、三
相負荷時タップ切換器を備えた変圧器を構成する場合の
負荷時タップ切換器の配置構成に関するものであり、単
相変圧器タンクとダクトをフランジ部で接続するように
構成しているため、工場で組立し試験後に輸送のため、
巻線および鉄心の絶縁および冷却に使用される絶縁油を
抜く必要があった。In this known example, application to an oil-immersed transformer using insulating oil and division into single-phase transformers composed of windings and iron cores, and transported by storing them in separate single-phase tanks, On-load tap change when a transformer with a three-phase on-load tap changer is configured by connecting the on-load tap changer and the single-phase transformer with insulated lead wires that are housed inside the duct at the installation site It is related to the arrangement configuration of the container, and it is configured to connect the single-phase transformer tank and the duct with the flange part, so that it is assembled at the factory and transported after testing.
It was necessary to drain the insulating oil used to insulate and cool the windings and iron core.
【０００４】また据付現地において、単相変圧器を据付
時に巻線および鉄心がダクトが接続するフランジ部分で
開放して接続するので、気中露出されるため絶縁物が吸
湿して、絶縁耐力が低下する恐れがあり、変圧器の電気
的性能の低下する恐れがあると共に、据付現地での絶縁
油の注油作業のための浄油機、真空ポンプ等の処理機械
が必要であった。このことは絶縁ガス例えばＳＦ６ガス
を使用する場合も同様である。Also, at the installation site, when the single-phase transformer is installed, the windings and the iron core are opened and connected at the flange portion to which the duct is connected, so that the insulator is absorbed because it is exposed to the air, and the dielectric strength is reduced. In addition to the possibility that the electrical performance of the transformer may be reduced, there is a need for a processing machine such as an oil purifier, a vacuum pump, etc. for lubricating the insulating oil at the installation site. This is the same when using an insulating gas, for example, SF6 gas.
【０００５】また据付現地でそれぞれの単相変圧器の巻
線と三相負荷時タップ切換器を容易に接続できる三相負
荷時タップ切換器を備えた変圧器の出現が望まれてい
た。At the installation site, there has been a demand for a transformer having a three-phase load tap changer which can easily connect the winding of each single-phase transformer and a three-phase load changer.
【０００６】[0006]
【発明が解決しようとする課題】本発明では、巻線と鉄
心等からなる単相変圧器本体の鉄心長手方向の前方に負
荷時タップ切換器を単相変圧器タンクの内部に配置し、
１台の中間単相変圧器を構成し、中間単相変圧器の両端
にそれぞれの巻線と鉄心からなる単相変圧器本体を別々
の単相変圧器タンクの内部に収納した２台の単相変圧器
を配置させることにより、負荷時タップ切換器へ結線さ
れる絶縁リード線を収納するダクトをそれぞれの巻線と
鉄心からなる２台の単相変圧器専用として構成出来るた
め、簡素化が図れると同時に、これらの単相変圧器タン
クとダクトの接続フランジ部分の接続部に挿入する接続
端子を設けた端部及び中間仕切板（セパレータ）を配置
することにより、工場で組立試験後に輸送のために分割
するが、それぞれの単相変圧器本体は端部及び中間仕切
板にて大気と隔離されているため、単相変圧器本体の絶
縁及び冷却に使用されるＳＦ６ガスを抜く必要がなくな
ると共に、単相変圧器として据付現地に輸送後の組立作
業時に絶縁リード線を収納したダクトと接続する際に、
巻線および鉄心が大気に露出することがなく、吸湿の恐
れがないため、変圧器の電気的性能を向上することが出
来る。According to the present invention, a load tap changer is disposed inside a single-phase transformer tank ahead of a single-phase transformer main body composed of a winding and an iron core in the longitudinal direction of the iron core.
A single intermediate single-phase transformer is constructed, and two single-phase transformers each including a winding and an iron core are housed in separate single-phase transformer tanks at both ends of the intermediate single-phase transformer. By arranging the phase transformer, the duct for storing the insulated lead wire connected to the tap changer under load can be configured exclusively for two single-phase transformers consisting of each winding and iron core. At the same time, by arranging the end part and the intermediate partition plate (separator) provided with the connection terminal to be inserted into the connection part of the connection flange part between the single-phase transformer tank and the duct, after the assembly test at the factory, However, since each single-phase transformer body is isolated from the atmosphere at the end and the intermediate partition plate, there is no need to remove SF6 gas used for insulating and cooling the single-phase transformer body. Together with a single-phase change When connecting a duct accommodating the insulated lead wires during assembly operation after transportation to installation site as a vessel,
Since the winding and the iron core are not exposed to the atmosphere and there is no fear of moisture absorption, the electrical performance of the transformer can be improved.
【０００７】また据付現地での絶縁リード線の結線作業
は、押圧接触結合してなる接続端子を装着しているた
め、絶縁リード線の接続作業の簡素化が図れる。さらに
前記ダクトの途中に伸縮継手を配置しているため、組立
時の寸法調整が容易となり、組立工数低減が図れる。[0007] Further, in the connection work of the insulated lead wire at the installation site, since the connection terminals formed by pressing and contacting are mounted, the connection work of the insulated lead wire can be simplified. Further, since the expansion joint is arranged in the middle of the duct, dimensional adjustment at the time of assembling becomes easy, and the number of assembling steps can be reduced.
【０００８】絶縁物の吸湿がなくなり、絶縁耐力が低下
する恐れがなく、変圧器の電気的性能の向上が図れると
共に、封入ガスの取扱い時間の短縮化が図れる。[0008] There is no possibility that the insulator absorbs moisture and the dielectric strength is not reduced, so that the electrical performance of the transformer can be improved and the time for handling the sealed gas can be shortened.
【０００９】つまり、本発明の目的は、各単相変圧器の
巻線と負荷時タップ切換器との接続作業を容易にする三
相負荷時タップ切換器を備えた変圧器を提供することに
ある。That is, an object of the present invention is to provide a transformer having a three-phase on-load tap changer which facilitates the connection work between the winding of each single-phase transformer and the on-load tap changer. is there.
【００１０】[0010]
【課題を解決するための手段】本発明は、上記の目的を
達成するために、請求項１の三相負荷時タップ切換器を
備えた変圧器は、一端と一端の直角方向に一端より長い
長手方向を有する鉄心に巻線を巻回した単相変圧器本体
を単相変圧器タンク内に収納した単相変圧器と、鉄心の
長手方向が互いに対応するように３個の単相変圧器を配
置し、中間の単相変圧器を他の単相変圧器より外側に突
出した突出タンク部内に巻線と中間リード線を介して接
続した負荷時タップ切換器を配置し、負荷時タップ切換
器と負荷時タップ切換器の両側の単相変圧器の巻線とを
端部リード線で接続し、端部リード線を包囲するダクト
を突出タンク部と単相変圧器タンクとの間に取り付ける
ことを特徴とする。According to the present invention, in order to achieve the above object, a transformer having a three-phase load tap changer according to claim 1 is longer than one end in a direction perpendicular to one end and one end. A single-phase transformer in which a single-phase transformer main body in which a winding is wound around an iron core having a longitudinal direction is accommodated in a single-phase transformer tank, and three single-phase transformers such that the longitudinal directions of the iron core correspond to each other. And an on-load tap changer that connects the intermediate single-phase transformer via a winding and an intermediate lead wire in the projecting tank that protrudes outside the other single-phase transformers. And the windings of the single-phase transformers on both sides of the on-load tap changer are connected by end leads, and a duct surrounding the end leads is mounted between the protruding tank and the single-phase transformer tank It is characterized by the following.
【００１１】請求項２の負荷時タップ切換器と負荷時タ
ップ切換器の両側の単相変圧器の巻線とを接続した端部
リード線は、一方の端部リード線を他方の端部リード線
より長くして、各単相変圧器の巻線の引出部を同一方向
から引き出すことを特徴とする。According to the second aspect of the present invention, the end lead connecting the on-load tap changer and the windings of the single-phase transformers on both sides of the on-load tap changer has one end lead connected to the other end lead. The length of each of the single-phase transformers is longer than that of the single-phase transformer.
【００１２】請求項３の両側つまり左右の単相変圧器タ
ンク側の突出タンク部に取付け中間仕切板に取付け複数
の電気的な接続部は、中間仕切板側の両側の単相変圧器
タンクに取付けられた端部仕切板を貫通する端部リード
線を、電気的な接続部に接続し、中間仕切板と端部仕切
板との間にダクトを取り付けたことを特徴とする。In the third aspect, the electric motor is mounted on the projecting tanks on both sides, that is, the left and right single-phase transformer tanks, and is mounted on the intermediate partition plate. A plurality of electrical connection portions are connected to the single-phase transformer tanks on both sides on the intermediate partition plate side. An end lead wire passing through the attached end partition plate is connected to an electrical connection portion, and a duct is attached between the intermediate partition plate and the end partition plate.
【００１３】請求項４の左右の端部リードと接続する負
荷時タップ切換器の各中間リード線は、互いに違う個所
から引き出すことを特徴とする。The intermediate lead wires of the on-load tap changer connected to the left and right end leads according to the fourth aspect of the present invention are drawn from different places.
【００１４】請求項５の上記ダクトの途中には、各単相
変圧器組立時の寸法調整可能な伸縮継手を配置したこと
を特徴とする。According to a fifth aspect of the present invention, an expansion joint capable of adjusting the dimensions at the time of assembling each single-phase transformer is disposed in the middle of the duct.
【００１５】請求項６の上記単相変圧器タンクに絶縁媒
体を有する単相変圧器を３相に配置し、中間の単相変圧
器タンクの突出タンク部の一部に設けた中間仕切板と、
この両側の単相変圧器タンクの一部に設けた端部仕切板
と、両仕切板に電気的な接続部を設け、中間仕切板と端
部仕切板との間に取り付けられ、且つ電気的な接続部に
接続する端部リード線を包囲しているダクトに絶縁媒体
を供給する連結管及び連結管に接続弁を設けることを特
徴とする。The single-phase transformer tank according to claim 6, wherein the single-phase transformer having an insulating medium is arranged in three phases in the single-phase transformer tank, and an intermediate partition plate provided at a part of a projecting tank portion of the intermediate single-phase transformer tank. ,
An end partition provided on a part of the single-phase transformer tank on both sides, and an electrical connection portion provided on both the partition, attached between the intermediate partition and the end partition, and electrically connected. A connecting pipe for supplying an insulating medium to a duct surrounding an end lead wire connected to the connecting section, and a connecting valve provided on the connecting pipe.
【００１６】請求項７の左右の単相変圧器タンク側の突
出タンク部に取付け中間仕切板に取付けられた複数の電
気的な続部は、複数の接続部を間隔を介して直線条に配
置した第１の電気的接続部と、複数の間隔に第１の電気
的接続部よりずらして電気的接続部を配置した第２の電
気的接続部とを備えたことを特徴とする。A plurality of electrical continuation portions attached to the intermediate partition plate and attached to the projecting tank portions on the left and right single-phase transformer tank sides of the seventh aspect have a plurality of connecting portions arranged in a straight line with an interval therebetween. And a second electrical connection portion having an electrical connection portion arranged at a plurality of intervals and shifted from the first electrical connection portion.
【００１７】[0017]
【発明の実施の形態】以下、本発明の実施例を図１及び
図２により説明する。三相負荷時タップ切換器を備えた
変圧器を上からみた平面図が図１であり、図１の側断面
図が図２である。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. FIG. 1 is a plan view of a transformer provided with a three-phase load tap changer, and FIG. 2 is a side sectional view of FIG.
【００１８】鉄心１は一端１ａと一端の直角方向に一端
より長い長手方向１ｂを有する。単相変圧器５Ａ，５
Ｂ，５Ｃは各鉄心１に巻線２Ａ，２Ｂ，２Ｃを巻回して
単相変圧器本体３を構成し、各単相変圧器本体３を単相
変圧器タンク４Ａ，４Ｂ，４Ｃ内に収納して構成してい
る。３相の単相変圧器５Ａ，５Ｂ，５Ｃは、鉄心１の長
手方向が互いに対応するように３個の単相変圧器５Ａ，
５Ｂ，５Ｃを対応配置する。The iron core 1 has one end 1a and a longitudinal direction 1b longer than one end in a direction perpendicular to the one end. Single-phase transformer 5A, 5
B and 5C form a single-phase transformer main body 3 by winding windings 2A, 2B and 2C around each iron core 1, and house each single-phase transformer main body 3 in single-phase transformer tanks 4A, 4B and 4C. It is composed. The three-phase single-phase transformers 5A, 5B, 5C have three single-phase transformers 5A, 5A,
5B and 5C are arranged correspondingly.
【００１９】中間相の単相変圧器５Ｂは他相の単相変圧
器５Ａ，５Ｃより外側に突出した突出タンク部５Ｂ´を
形成している。突出タンク部５Ｂ´内に配置した負荷時
タップ切換器６は巻線３Ｂと一方側の中間リード線７Ｂ
を介して接続し、他方側の中間リード線７Ｂは負荷時タ
ップ切換器６の両側の単相変圧器５Ａ，５Ｃの巻線２
Ａ，２Ｃと接続した端部リード線７Ａ，７Ｃと結線して
いる。The intermediate-phase single-phase transformer 5B forms a projecting tank portion 5B 'projecting outside the other-phase single-phase transformers 5A and 5C. The on-load tap changer 6 disposed in the projecting tank portion 5B 'includes a winding 3B and an intermediate lead 7B on one side.
And the intermediate lead 7B on the other side is connected to the windings 2 of the single-phase transformers 5A and 5C on both sides of the on-load tap changer 6.
A and 2C are connected to end lead wires 7A and 7C.
【００２０】両端部リード線７Ａ，７Ｃは単相変圧器タ
ンク４Ａ，４Ｃの一部を突出した側壁に端部仕切板８を
取付けると共に、単相変圧器タンク４Ａ，４Ｃ内を気密
に保っている。端部仕切板８を貫通している端部リード
線７Ａ，７Ｃは突出タンク部５Ｂ´側に伸びている。突
出タンク部５Ｂ´の一部を突出した側壁のフランジは図
３及び図４に示す中間仕切板１０を取り付けている。The lead wires 7A and 7C at both ends are provided with an end partition plate 8 on a side wall protruding from a part of the single-phase transformer tanks 4A and 4C, and the inside of the single-phase transformer tanks 4A and 4C is kept airtight. I have. The end lead wires 7A and 7C penetrating the end partition plate 8 extend toward the protruding tank portion 5B '. The intermediate partition plate 10 shown in FIGS. 3 and 4 is attached to the flange of the side wall that protrudes a part of the protruding tank portion 5B '.
【００２１】この中間仕切板１０は、中間仕切板１０の
外周とフランジとに連通する貫通穴１０Ａに挿入したボ
ルトにナットを挿入して締め付けて、固定しているが、
この場合中間仕切板１０の外周とフランジとの間にはシ
ールを介して気密を保つている。中間仕切板１０は複数
の電気的な接続部１２を設けている。また複数の電気的
な接続部１２は端部仕切板８に設けても良い。The intermediate partition plate 10 is fixed by inserting a nut into a bolt inserted into a through hole 10A communicating with the outer periphery of the intermediate partition plate 10 and the flange, and tightening the nut.
In this case, airtightness is maintained between the outer periphery of the intermediate partition plate 10 and the flange via a seal. The intermediate partition plate 10 has a plurality of electrical connection portions 12. Further, a plurality of electrical connection portions 12 may be provided on the end partition plate 8.
【００２２】複数の電気的な接続部１２は間隔面Ｙを介
して直線的に第１の電気的接続群Ｘ１を配置し、第１の
電気的接続群Ｘ１よりずらして複数の接続部１２よりな
る第２の電気的接続群Ｘ２を複数の間隔面Ｙに配置し、
互いに隣接する各接続群の接続部１２が対応しないよう
に配置している。The plurality of electrical connection portions 12 are arranged with the first electrical connection group X1 linearly via the spacing plane Y, and are shifted from the first electrical connection group X1 so as to be shifted from the plurality of connection portions 12. The second electrical connection group X2 is disposed on a plurality of spacing planes Y,
The connection portions 12 of the connection groups adjacent to each other are arranged so as not to correspond to each other.
【００２３】接続部１２の構成は図４及び図５に示すよ
うに導電部材例えば銅棒の両端面より堀込んだ接触穴１
２Ａ，１２Ｂを形成している。内側の接触穴１２Ａと外
側の接触穴１２Ｂとに中間リード線７Ｂと端部リード線
７Ａ，７Ｃとに設けた図６の接触端子１３を挿入する。
接触端子１３は接触穴１２Ｂに挿入する場合には接触端
子１３のバネ１３Ａを指で押しながら挿入すると、接触
穴１２Ｂ内でバネ１３Ａは釈放されて、バネ１３Ａが接
触穴１２Ｂの内面を押圧し、電気的接触が良好に行われ
る。As shown in FIGS. 4 and 5, the connecting portion 12 has a contact hole 1 dug from both end surfaces of a conductive member such as a copper rod.
2A and 12B are formed. The contact terminals 13 of FIG. 6 provided in the intermediate lead wire 7B and the end lead wires 7A and 7C are inserted into the inner contact hole 12A and the outer contact hole 12B.
When inserting the contact terminal 13 into the contact hole 12B while pressing the spring 13A of the contact terminal 13 with a finger, the spring 13A is released in the contact hole 12B, and the spring 13A presses the inner surface of the contact hole 12B. Good electrical contact is made.
【００２４】端部リード線７Ａ，７Ｃを包囲しているダ
クト１４Ａ，１４Ｂは端部にフランジを形成し、このフ
ランジを端部仕切板８と中間仕切板１０との間に嵌め込
み、フランジと端部仕切板８及び中間仕切板１０に形成
した貫通穴１０Ａに相当する連通穴にボルトを挿入し、
ボルトにナットを挿入して締め付けて、固定している
が、この場合、端部仕切板８及び中間仕切板１０の外周
とフランジとの間にはシールを介して気密を保つてい
る。各ダクト１４Ａ，１４Ｂにダクト内と連通する連絡
管である連結管１５を取付け、連結管１５は絶縁冷媒例
えばＳＦ６ガスボンベ、又は絶縁油タンクに接続すると
共に、接続弁１６を取り付けて、ＳＦ６ガスの流通を制
御している。The ducts 14A, 14B surrounding the end lead wires 7A, 7C form a flange at the end, and this flange is fitted between the end partition plate 8 and the intermediate partition plate 10, and the flange and the end are inserted. A bolt is inserted into a communication hole corresponding to the through hole 10A formed in the partial partition plate 8 and the intermediate partition plate 10,
A nut is inserted into the bolt and tightened to fix it. In this case, airtightness is maintained between the outer periphery of the end partition plate 8 and the intermediate partition plate 10 and the flange via a seal. A connecting pipe 15 which is a connecting pipe communicating with the inside of the duct is attached to each of the ducts 14A and 14B. The connecting pipe 15 is connected to an insulating refrigerant, for example, an SF6 gas cylinder or an insulating oil tank, and a connecting valve 16 is attached to the duct 15 to supply SF6 gas. Controls distribution.
【００２５】また一方側のダクト１４Ａは他方側のダク
ト１４Ｂより短く配置されている。このことは端部リー
ド線７Ａ，７Ｃも同じである。さらに中間仕切板１０と
ダクト１４Ａ，１４Ｂとの間には伸縮継手１７を各々装
備し、組立時の寸法調整をして、据付時間の短縮化を図
っている。またダクト１４Ａ，１４Ｂの形状は直線でな
くＬ形に構成すると共に、それぞれの単相変圧器タンク
４Ａ，４Ｃの側板より引き出すように構成する。The duct 14A on one side is shorter than the duct 14B on the other side. This is the same for the end lead wires 7A and 7C. Further, expansion joints 17 are provided between the intermediate partition plate 10 and the ducts 14A and 14B to adjust the dimensions at the time of assembling to shorten the installation time. The ducts 14A and 14B are formed not in a straight line but in an L shape, and are drawn out from the side plates of the respective single-phase transformer tanks 4A and 4C.
【００２６】次に本発明の実施例による主な作用効果を
説明する。Next, main effects of the embodiment of the present invention will be described.
【００２７】（１）工場で予めＳＦ６を各単相変圧器タ
ンク４Ａ，４Ｂ，４Ｃ内に注入した各単相変圧器５Ａ、
５Ｂ，５Ｃを個別に設置場所に輸送し、設置個所で鉄心
１の長手方向１ｂが互いに対応するように各単相変圧器
５Ａ，５Ｂ，５Ｃを所定場所に配置後、端部仕切板８及
び中間仕切板１０の外周とフランジとの間にはシールを
介してダクト１４Ａ，１４Ｂを取付け、接続弁１６を開
き、ガスボンベからのＳＦ６ガスを連結管１５より、ダ
クト１４Ａ，１４Ｂ内に所定量を注入後、接続弁１６を
閉じる。(1) Each single-phase transformer 5A in which SF6 is previously injected into each single-phase transformer tank 4A, 4B, 4C at a factory;
5B, 5C are individually transported to the installation location, and the single-phase transformers 5A, 5B, 5C are arranged at predetermined locations so that the longitudinal directions 1b of the iron core 1 correspond to each other at the installation locations. Ducts 14A and 14B are attached between the outer periphery of the intermediate partition plate 10 and the flange via a seal, the connection valve 16 is opened, and SF6 gas from the gas cylinder is supplied into the ducts 14A and 14B from the connecting pipe 15 by a predetermined amount. After the injection, the connection valve 16 is closed.
【００２８】このため、それぞれの単相変圧器５Ａ，５
Ｂ，５Ｃは、工場試験時に封入したＳＦ６ガスを端部仕
切板（セパレータ）８で大気と隔離しているため、輸送
時に単相変圧器本体３側のガスを抜くことがなく、大気
露出が工場の輸送準備及び据付現地でも無くなり、絶縁
物の吸湿がなくなり、絶縁耐力が低下する恐れがなく、
変圧器の電気的性能の向上が図れると共に、封入ガスの
取扱い時間の短縮化が図れる。For this reason, each of the single-phase transformers 5A, 5A
In B and 5C, the SF6 gas sealed during the factory test is isolated from the atmosphere by the end partition (separator) 8, so that the gas on the single-phase transformer main body 3 side is not evacuated during transportation, and the atmosphere is exposed. There is no need for the factory to prepare for transportation and installation.
The electrical performance of the transformer can be improved, and the handling time of the sealed gas can be shortened.
【００２９】更に上述を詳細に説明すると、分割輸送時
に単相変圧器５Ａ，５Ｂ，５ＣにＳＦ６ガスを封入した
状態で分割輸送をし、据付現地で鉄心１の長手方向１ｂ
が互いに対応するように各単相変圧器５Ａ，５Ｂ，５Ｃ
を配置し、端部仕切板８と中間仕切板１０との間にダク
ト１４Ａ，１４Ｂを取付ける。ダクト１４Ａ，１４Ｂに
設けた作業穴１８より、作業員が接続部１２の接触穴１
２Ａ，１２Ｂに端部リード線７Ａ，７Ｃの接触端子１３
を挿入し、中間リード線７Ｂと接続した後、作業穴１８
を塞いで、接続弁１６を開き、ＳＦ６ガスボンベからＳ
Ｆ６ガスをダクト１４Ａ，１４Ｂに注入することによ
り、上述の効果を達成できる。To explain the above in more detail, the divided transportation is performed in a state where SF6 gas is sealed in the single-phase transformers 5A, 5B and 5C during the divided transportation, and the longitudinal direction 1b of the iron core 1 is set at the installation site.
Correspond to each other, each single-phase transformer 5A, 5B, 5C
And ducts 14 </ b> A and 14 </ b> B are attached between the end partition plate 8 and the intermediate partition plate 10. From the working holes 18 provided in the ducts 14A and 14B, the worker can use the contact holes 1
The contact terminals 13 of the end lead wires 7A, 7C are connected to 2A, 12B.
Is inserted and connected to the intermediate lead wire 7B.
Is closed, and the connection valve 16 is opened.
The effects described above can be achieved by injecting the F6 gas into the ducts 14A and 14B.
【００３０】また分割輸送時に単相変圧器５Ａ，５Ｂ，
５Ｃの封入圧力をダクト１４Ａ，１４Ｂの容積に見合っ
た分だけ高目に設定した状態で分割輸送をし、据付現地
で各単相変圧器５Ａ，５Ｂ，５Ｃにダクト１４Ａ，１４
Ｂを取付け後、各単相変圧器５Ａ，５Ｂ，５Ｃとダクト
１４Ａ，１４Ｂとの間を連絡管１５で接続後、接続弁１
６を開き、連絡管１５からのＳＦ６ガスをダクト１４
Ａ，１４Ｂに供給するように構成することにより、据付
現地にＳＦ６ガスボンベを輸送する必要がない効果があ
る。Further, at the time of divided transportation, the single-phase transformers 5A, 5B,
Separate transportation is performed in a state where the filling pressure of 5C is set higher by an amount corresponding to the volume of the ducts 14A and 14B, and the ducts 14A and 14C are supplied to the single-phase transformers 5A, 5B and 5C at the installation site.
B, after connecting each of the single-phase transformers 5A, 5B, 5C and the ducts 14A, 14B with the connecting pipe 15, the connecting valve 1
6 is opened and SF6 gas from the connecting pipe 15 is supplied to the duct 14
By supplying the gas to A and 14B, there is an effect that it is not necessary to transport the SF6 gas cylinder to the installation site.
【００３１】（２）この実施例では突出タンク部５Ｂ´
は突出タンク部５Ｂ´を設けない場合に比べて、突出タ
ンク部５Ｂ´と各単相変圧器５Ａ，５Ｃとの間に取付け
たダクト１４Ａ，１４Ｂにより、機械的強度が増し、耐
震性を増すことが出来るばかりか、また実施例のように
ダクト１４Ａ，１４Ｂを突出タンク部５Ｂ´及び各単相
変圧器５Ａ，５Ｃの側壁に設けると、重心が下がり、更
に耐震性を増すことが出来る。側壁にダクト１４Ａ，１
４Ｂを設ることは、その分高さが低くなり、作業員が設
置面に立って作業が出来るから、取付け作業の効率を計
ることが出来る。 （３）一方側の端部リード線７Ａは他方側の端部リード
線７Ｃより短く配置している。この結果、巻線２Ｂと接
続している中間リード線７Ｂと同側から端部リード線７
Ａ，７Ｃを引き出すことができ、接続作業時に作業員が
接続を間違うことがなくり、作業員が接続時に神経を使
ない分、接続作業の効率を計ることが出来る。(2) In this embodiment, the projecting tank 5B '
As compared with the case where the projecting tank portion 5B 'is not provided, the ducts 14A and 14B attached between the projecting tank portion 5B' and each of the single-phase transformers 5A and 5C increase the mechanical strength and increase the earthquake resistance. When the ducts 14A, 14B are provided on the side walls of the projecting tank portion 5B 'and the single-phase transformers 5A, 5C as in the embodiment, the center of gravity is lowered and the earthquake resistance can be further increased. Duct 14A, 1 on the side wall
By providing the 4B, the height is reduced by that amount, and the worker can work on the installation surface, so that the efficiency of the mounting work can be measured. (3) One end lead 7A is shorter than the other end lead 7C. As a result, from the same side as the intermediate lead 7B connected to the winding 2B, the end lead 7
A and 7C can be drawn out, so that the worker does not make a wrong connection at the time of connection work, and the efficiency of the connection work can be measured because the worker does not use nerves at the time of connection.
【００３２】（４）端部リード線７Ａ及び端部リード線
７Ｃに接続する中間リード線７Ｂの引出位置９を互いに
ずらして配置することにより、同一位置から引出のに比
べて、ずらした分、一端つまり突出タンク部５Ｂ´の幅
Ｌを縮小できる。(4) By arranging the lead-out positions 9 of the intermediate lead wires 7B connected to the end lead wire 7A and the end lead wire 7C so as to be shifted from each other, compared to the case where the lead wires are pulled out from the same position, One end, that is, the width L of the protruding tank portion 5B 'can be reduced.
【００３３】（５）複数の電気的な接続部１２は間隔面
Ｙを介して直線的に第１の電気的接続群Ｘ１を配置し、
第１の電気的接続群Ｘ１よりずらして複数の接続部１２
よりなる第２の電気的接続群Ｘ２を複数の間隔面Ｙに配
置し、互いに隣接する各接続群の接続部１２が対応しな
いように配置し、接続部１２の熱発生部を分散して、中
間仕切板１０の変形を防止すると共に、各電気的接続群
に間隔面Ｙを設けた分、中間仕切板１０の機械的強度を
増すことができる。尚、上記複数の電気的な接続部１２
を端部仕切板８に設けてもよい。(5) The plurality of electrical connection portions 12 linearly arrange the first electrical connection group X1 via the spacing plane Y,
The plurality of connection portions 12 are shifted from the first electrical connection group X1.
The second electrical connection group X2 is disposed on a plurality of spacing planes Y, and the connection portions 12 of the connection groups adjacent to each other are arranged so as not to correspond to each other, and the heat generating portions of the connection portions 12 are dispersed. The deformation of the intermediate partition plate 10 can be prevented, and the mechanical strength of the intermediate partition plate 10 can be increased by the provision of the spacing surface Y in each electrical connection group. Note that the plurality of electrical connection portions 12
May be provided on the end partition plate 8.
【００３４】[0034]
【発明の効果】以上のように、本発明の三相負荷時タッ
プ切換器を備えた変圧器によれば、各単相変圧器の巻線
と負荷時タップ切換器との間のダクト及びリード線の取
付作業が容易になった。As described above, according to the transformer having the three-phase load tap changer of the present invention, the duct and the lead between the winding of each single-phase transformer and the load tap changer are provided. The work of attaching the wires has become easier.
【図１】本発明の実施例として示した分割輸送形三相負
荷時タップ切換器を備えたガス絶縁変圧器の平面図。FIG. 1 is a plan view of a gas-insulated transformer provided with a split transport three-phase on-load tap changer shown as an embodiment of the present invention.
【図２】図１の正面からみた側断面図。FIG. 2 is a side sectional view as viewed from the front in FIG. 1;
【図３】図１に使用した中間仕切板の正面図。FIG. 3 is a front view of the intermediate partition plate used in FIG. 1;
【図４】図３のＡ−Ａ線断面図。FIG. 4 is a sectional view taken along line AA of FIG. 3;
【図５】図３及び図４の使用した接続部の断面図。FIG. 5 is a sectional view of the connecting portion used in FIGS. 3 and 4;
【図６】図３及び図４の使用する接触端子の断面図。FIG. 6 is a sectional view of the contact terminal used in FIGS. 3 and 4;
１…鉄心、２…巻線、３…単相変圧器本体、４Ａ，４
Ｂ，４Ｃ…単相変圧器タンク、５Ａ，５Ｂ，５Ｃ…単相
変圧器、５Ｂ´…突出タンク部、６…負荷時タップ切換
器、７Ａ、７Ｃ…端部リード線、７Ｂ…中間リード線、
８…端部仕切板、１０…中間仕切板、１２…接続部、１
４Ａ，１４Ｂ…ダクト。DESCRIPTION OF SYMBOLS 1 ... Iron core, 2 ... Winding, 3 ... Single phase transformer main body, 4A, 4
B, 4C: single-phase transformer tank, 5A, 5B, 5C: single-phase transformer, 5B ': protruding tank, 6: tap changer under load, 7A, 7C: end lead wire, 7B: intermediate lead wire ,
Reference numeral 8: end partition plate, 10: intermediate partition plate, 12: connection portion, 1
4A, 14B ... duct.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 渡辺 誠吾 茨城県日立市国分町一丁目１番１号 株式 会社日立製作所国分工場内 (72)発明者 片桐 康宣 茨城県日立市国分町一丁目１番１号 株式 会社日立製作所国分工場内 Ｆターム(参考） 5E059 AA01 EE02 EE06 LL06 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Seigo Watanabe 1-1-1, Kokubuncho, Hitachi City, Ibaraki Prefecture Inside the Kokubu Plant, Hitachi, Ltd. (72) Inventor Yasunobu Katagiri 1-1, Kokubuncho, Hitachi City, Ibaraki Prefecture No. 1 F-term in Kokubu Plant of Hitachi, Ltd. (reference) 5E059 AA01 EE02 EE06 LL06
Claims (7)
単相変圧器タンク内に収納した単相変圧器と、鉄心の長
手方向が互いに対応するように３個の単相変圧器を配置
し、中間の単相変圧器を他の単相変圧器より外側に突出
した突出タンク部内に巻線と中間リード線を介して接続
した負荷時タップ切換器を配置し、負荷時タップ切換器
と負荷時タップ切換器の両側の単相変圧器の巻線とを端
部リード線で接続し、端部リード線を包囲するダクトを
突出タンク部と単相変圧器タンクとの間に取り付けるこ
とを特徴とする三相負荷時タップ切換器を備えた変圧
器。1. A single-phase transformer in which a single-phase transformer body having windings wound around an iron core is housed in a single-phase transformer tank, and three single-phase transformers such that the longitudinal directions of the iron core correspond to each other. A load tap changer that connects the intermediate single-phase transformer via a winding and an intermediate lead wire in the projecting tank part that protrudes outside the other single-phase transformer from the other single-phase transformer, and the load tap The switch and the winding of the single-phase transformer on both sides of the on-load tap changer are connected by end leads, and a duct surrounding the end lead is inserted between the projecting tank and the single-phase transformer tank. A transformer equipped with a three-phase load tap changer, which is attached.
単相変圧器タンク内に収納した単相変圧器と、鉄心の長
手方向が互いに対応するように３個の単相変圧器を配置
し、中間の単相変圧器を他の単相変圧器より外側に突出
した突出タンク部内に巻線と中間リード線を介して接続
した負荷時タップ切換器を配置し、突出タンク部と単相
変圧器タンクとの間に端部リード線を包囲するダクトを
取り付け、負荷時タップ切換器と負荷時タップ切換器の
両側の単相変圧器の巻線とを端部リード線で接続し、一
方の端部リード線を他方の端部リード線より長くして各
単相変圧器の巻線の引出部を同一方向から引き出すこと
を特徴とする三相負荷時タップ切換器を備えた変圧器。2. A single-phase transformer in which a single-phase transformer main body in which a winding is wound around an iron core is accommodated in a single-phase transformer tank, and three single-phase transformers such that the longitudinal directions of the iron core correspond to each other. And a load tap changer connected via a winding and an intermediate lead wire in a projecting tank portion in which an intermediate single-phase transformer projects outside of other single-phase transformers. A duct surrounding the end lead wire is installed between the tank and the single-phase transformer tank, and the load tap changer and the windings of the single-phase transformers on both sides of the load tap changer are connected with the end lead wire. The three-phase load tap changer is characterized in that one end lead wire is longer than the other end lead wire and the lead-out portion of each single-phase transformer winding is drawn out from the same direction. Transformer.
ク部に取付けられた中間仕切板に複数の電気的接続部を
取付け、中間仕切板側の両側の単相変圧器タンクに取付
けた端部仕切板を貫通する端部リード線を、電気的接続
部に接続し、中間仕切板と端部仕切板との間にダクトを
取り付けることを特徴とする請求項１又は２記載の三相
負荷時タップ切換器を備えた変圧器。3. A plurality of electrical connections are mounted on an intermediate partition attached to the projecting tank on the other single-phase transformer tank side, and attached to the single-phase transformer tanks on both sides on the intermediate partition side. The three-phase according to claim 1 or 2, wherein an end lead wire passing through the end partition is connected to the electrical connection portion, and a duct is attached between the intermediate partition and the end partition. Transformer with on-load tap changer.
切換器の各中間リード線は互いに違う個所から引き出す
ことを特徴とする請求項１から３のいずれか１項記載の
三相負荷タップ切換器を備えた変圧器。4. The three-phase load tap changer according to claim 1, wherein each intermediate lead wire of the load tap changer connected to the end lead is drawn out from a different part. Transformer with a vessel.
時の寸法を調整可能な伸縮継手を配置したことを特徴と
する請求項１から４のいずれか１記載の三相負荷時タッ
プ切換器を備えた変圧器。5. A three-phase load tap according to claim 1, wherein an expansion joint capable of adjusting dimensions at the time of assembling each single-phase transformer is arranged in the middle of the duct. Transformer with switch.
る単相変圧器であって、中間の単相変圧器に中間仕切板
を両端の単相変圧器に端部仕切板を設け、中間仕切板と
端部仕切板との間にダクトを取り付け、ダクトに絶縁媒
体を供給する連結管及び連結管に接続弁を設けることを
特徴とする請求項３項記載の三相負荷時タップ切換器を
備えた変圧器。6. A single-phase transformer having an insulating medium in the single-phase transformer tank, wherein an intermediate partition plate is provided in an intermediate single-phase transformer, and an end partition plate is provided in single-phase transformers at both ends. 4. A three-phase load tap changer according to claim 3, wherein a duct is attached between the partition plate and the end partition plate, and a connecting pipe for supplying an insulating medium to the duct and a connecting valve are provided in the connecting pipe. With a transformer.
ク部に取付けられた中間仕切板に取付けた複数の電気的
接続部は、複数の電気的接続部を間隔面を介して直線的
に配置した第１の電気的接続群と、複数の間隔面に第１
の電気的接続群よりずらして電気的接続部を配置した第
２の電気的接続群とを備えたことを特徴とする請求項３
記載の三相負荷時タップ切換器を備えた変圧器。7. A plurality of electrical connection portions attached to an intermediate partition plate attached to the projecting tank portion on the other single-phase transformer tank side, the plurality of electrical connection portions are linearly connected via a spacing surface. The first electrical connection group disposed on the
And a second electrical connection group in which the electrical connection portions are arranged shifted from the electrical connection group.
A transformer comprising the three-phase on-load tap changer according to any one of the preceding claims.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10189145A JP2000021644A (en) | 1998-07-03 | 1998-07-03 | Transformer equipped with three-phase tap switch which operates when loaded |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10189145A JP2000021644A (en) | 1998-07-03 | 1998-07-03 | Transformer equipped with three-phase tap switch which operates when loaded |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2000021644A true JP2000021644A (en) | 2000-01-21 |
Family
ID=16236183
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10189145A Pending JP2000021644A (en) | 1998-07-03 | 1998-07-03 | Transformer equipped with three-phase tap switch which operates when loaded |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2000021644A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113948292A (en) * | 2021-10-27 | 2022-01-18 | 保定保菱变压器有限公司 | Novel transformer on-load voltage regulation structure and method |
-
1998
- 1998-07-03 JP JP10189145A patent/JP2000021644A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113948292A (en) * | 2021-10-27 | 2022-01-18 | 保定保菱变压器有限公司 | Novel transformer on-load voltage regulation structure and method |
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