JP2773763B2 - Phase switching device of the high-voltage three phase distribution line - Google Patents

Phase switching device of the high-voltage three phase distribution line

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Publication number
JP2773763B2
JP2773763B2 JP5061736A JP6173693A JP2773763B2 JP 2773763 B2 JP2773763 B2 JP 2773763B2 JP 5061736 A JP5061736 A JP 5061736A JP 6173693 A JP6173693 A JP 6173693A JP 2773763 B2 JP2773763 B2 JP 2773763B2
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switch
phase
current
distribution line
non
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JPH06276686A (en
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正人 今井
和昭 加藤
匡毅 杉山
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日本碍子株式会社
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E40/00Technologies for an efficient electrical power generation, transmission or distribution
    • Y02E40/50Arrangements for eliminating or reducing asymmetry in polyphase networks

Description

【発明の詳細な説明】 DETAILED DESCRIPTION OF THE INVENTION

【0001】 [0001]

【産業上の利用分野】本発明は、三相負荷電流の不平衡が大きい高圧三相配電線において、単相負荷が接続されている相を残りの相に切り替えるために使用される高圧三相配電線の相切替装置に関するものである。 The present invention relates, in the high pressure three-phase distribution line imbalance is large three-phase load current, high voltage three phase distribution line that is used to switch the phase of the single-phase load is connected to the remaining phase it relates the phase switching device.

【0002】 [0002]

【従来の技術】高圧三相配電線に対する単相負荷の接続は、三相中の任意の二相に対して行われることとなるが、実際の系統においては単相負荷が特定の二相に集中して接続されることが多い。 Connection of the single-phase load for the Prior Art High pressure three-phase distribution line, but the be made to any two phases of a three-phase, the actual concentration single-phase load to a specific two-phase in the system it is often connected to. このような場合には三相負荷電流の不平衡状態を招き、電力設備の利用効率が悪くなったり、三相誘導モータ等の負荷にも悪影響を及ぼしたりする。 Such lead to unbalanced three-phase load current in the case, may become poor utilization efficiency of the power plant, or have an adverse effect on the load such as a three-phase induction motor.

【0003】そこでこのような場合には、単相負荷が接続されている相を残りの相に切り替えることにより三相負荷電流の不平衡を減少させることが考えられる。 [0003] Therefore in such a case, it is conceivable to reduce the unbalance of the three-phase load current by switching the phase of the single-phase load is connected to the remaining phases. ところがこのためには長時間の停電工事を必要とするので、 However, because it requires a long period of time of the power failure construction for this purpose,
通常は相の切り替えを行うことなく運用されていることが多かった。 Usually it was often are operated without switching phase.

【0004】上記の実情に鑑み、本発明者等は実質的に無停電で相の切り替えを行うことができる相切替装置を発明し、既に特願平4-228772号として特許出願した。 [0004] In view of the above circumstances, the present inventors have invented a substantially phase-switching apparatus capable of switching the phase uninterruptible have already filed a patent application as Japanese Patent Application No. 4-228772. この先願の相切替装置は、図7に示すように配電線の切断される相bの切断点Xと並列に第1開閉器1を取り付けるとともに、前記切断点Xよりも負荷L側の点と接続される相cとの間に、第1開閉器1の開路に引続き高速で閉動作を行う無接点開閉器3を取り付け、さらにこの無接点開閉器3と並列にその閉動作に引続き閉動作を行う第2開閉器2を取り付けたものである。 Phase switching device of the prior application, the first switch 1 is attached in parallel to the cutting point X of the cut are phase b of distribution lines as shown in FIG. 7, a point of the load L side from the cutting point X between the phases c to be connected, the non-contact switch 3 attached to perform the closing operation continues at a high speed to the first open-circuit of the switch 1, further continuing the closing operation in parallel with the non-contact switch 3 to the closing operation it is prepared by attaching the second switch 2 for.

【0005】この相切替装置は、第1開閉器1をオンとして切断点Xを切断したうえ、第1開閉器1をオフとすると同時に無接点開閉器3をオンとして瞬時に相の切り替えを行い、更に第2開閉器2を閉じたうえで第2開閉器2と並列に結線を行うという手順で工事を進行するためのものである。 [0005] The phase switching device, after having cut the cut point X of the first switch 1 as an on, instantaneously switches the phases of the first switch 1 when turning off the non-contact switch 3 at the same time as on is for advanced construction in steps of further making connections in parallel with the second switch 2 upon closing the second switch 2. しかしこの先願の相切替装置において、例えば第1開閉器が開放されていないにもかかわらず無接点開閉器を投入した場合には、相間短絡事故が発生するおそれがあった。 However, in the phase switching device of the prior application, for example, when the first switch is obtained by introducing non-contact switch even though not open, there is a possibility that inter-phase short circuit occurs.

【0006】 [0006]

【発明が解決しようとする課題】本発明は上記した従来の問題点を解決して、無停電で相の切り替えを行うことができ、しかも短絡事故等の可能性を完全に防止できる高圧三相配電線の相切替装置を提供するために完成されたものである。 [SUMMARY OF THE INVENTION The present invention to solve the conventional problems described above, uninterruptible can switch phase, yet high pressure three-phase distribution that can completely prevent the possibility of such short circuit has been accomplished in order to provide a phase switching device of the electric wire.

【0007】 [0007]

【課題を解決するための手段】上記の課題を解決するためになされた本発明は、配電線の切断される相の切断点と並列に第1開閉器を取り付けるとともに、前記切断点よりも負荷側の点と接続される相との間に第1開閉器の開路に引続き高速で閉動作を行う無接点開閉器を取り付け、さらにこの無接点開閉器と並列にその閉動作に引続き閉動作を行う第2開閉器を取り付けた相切替装置において、各開閉器に電流検出手段を設けるとともに、各開閉器が動作する度に電流を検出して相の切替えを行っていく制御装置を設けたことを特徴とするものである。 Means for Solving the Problems] The present invention has been made in order to solve the aforementioned problem, is attached to the first switch in parallel with the cutting point of the cut is phase distribution line load than the cutting point attaching a non-contact switch to perform the closing operation continues at a high speed to the open passage of the first switch between the phases to be connected to a point on the side, further continue closing operation to the closing operation in parallel with the non-contact switch in phase-switching apparatus fitted with a second switch that performs, current is provided with the detection means, that each switch is provided with going control device performs switching of the phases to detect the current every time to operate the switch the one in which the features.

【0008】 [0008]

【作用】本発明の高圧三相配電線の相切替装置は、各開閉器に取り付けた電流検出手段により各開閉器の動作を確認しつつ制御装置が相の切替えを進行するので、短絡事故の発生を完全に防止しつつ相の切替えを完了することができる。 [Action] phase switching device of the high-voltage three-phase distribution line of the present invention, the control device while checking the operation of each switch by the current detecting means attached to each switch proceeds switching phase, the short-circuit accident the can be completed entirely preventing while switching phases. なお、具体的な構成及び手順は次の実施例によって詳細に説明する。 The specific arrangements and procedures are illustrated by the following examples in detail.

【0009】 [0009]

【実施例】〔実施例1〕図1は第1の実施例の構成を示す回路図であり、a,b,cの三相配電線のa−b間に接続されている負荷Lをa−c間に切り替える例を示している。 EXAMPLES Example 1 FIG. 1 is a circuit diagram showing a configuration of the first embodiment, a, b, a load L connected between a-b of the three-phase distribution lines c a- It shows an example of switching between c. ここでbを切断される相、cを接続される相、 Here phase to be cut b, phase connected to c,
Xを切断点とする。 It is referred to as the cutting point X. また1は切断される相bの切断点X The first cutting point of phase b to be cut is X
と並列に取り付けられた有接点式の第1開閉器(SW A first switch of Reed type mounted in parallel (SW
)、3は切断点Xよりも負荷L側の点と接続される相bとの間に設けられ、第1開閉器1の開路に引続き高速で閉動作を行う無接点開閉器(SCR)である。 ), 3 is provided between the phase b is connected to a point of the load L side from the cutting point X, in non-contact switch to perform the closing operation continues at a high speed to the first open-circuit of the switch 1 (SCR) is there. この無接点開閉器3としては例えばサイリスタのような半導体を利用した半導体スイッチが用いられる。 As the non-contact switch 3 semiconductor switch is used using a semiconductor such as a thyristor. 更に2はこの無接点開閉器3と並列に取り付けられ、無接点開閉器3の閉動作に引続き閉動作を行う第2開閉器(SW) Further 2 This a non-contact switch 3 mounted in parallel and subsequently the second switch to perform the closing operation on the closing of the non-contact switch 3 (SW)
である。 It is.

【0010】本発明においては、これらの第1開閉器1、第2開閉器2、無接点開閉器3の電源側にCTのような電流検出手段4(CT)、5(CT)、6(C In the present invention, the first switch 1 thereof, the second switch 2, a current detecting means 4, such as CT to the power supply side of the non-contact switch 3 (CT), 5 (CT), 6 ( C
T)を取り付け、各開閉器の動作を確認できるようにしてある。 Attach the T), it is then be able to see the operation of each switch. これらの電流検出手段4、5、6の出力は制御装置7に入力されている。 The outputs of these current detection means 4, 5, 6 is input to the control device 7. また制御装置7は第1開閉器1、第2開閉器2、無接点開閉器3にそれぞれ接続され、これらの開閉動作を制御することができるようになっている。 The control device 7 is adapted to be connected to the first switch 1, the second switch 2, the contactless switch 3, it is possible to control these switching operation.

【0011】次に図2を参照しつつ図1の装置の動作を説明する。 [0011] Next will be described the operation of the apparatus of FIG. 1 with reference to FIG. まず三相配電線のケーブルに図1のように各機器を接続したうえ、第1開閉器1(SW)をオンとする。 First terms of connecting the respective devices as shown in Figure 1 to the cable of a three-phase distribution line, and turns on the first switch 1 (SW). このとき電流検出手段4(CT)に電流が流れていることを制御装置7が確認し、もし電流が流れていない場合には異常警報を発して動作を停止する。 At this time, the current detecting that a current flows means 4 (CT) controller 7 confirms, if when the current is not flowing stops operating issues an abnormality alarm. また電流検出手段4(CT)に電流が流れていることが確認されたときには、制御装置7が電線切断の指示を出し切断される相bを切断点Xから切断する。 Further, when it is confirmed that a current flows to the current detection unit 4 (CT) cleaves the phase b the controller 7 is disconnected instructs the wire cut from the cutting point X.

【0012】次に第1開閉器1(SW)をオフとし、 [0012] Then the first switch 1 (SW) is turned off,
これに引続き制御装置7が無接点開閉器3(SCR) This continued control device 7 noncontact switch 3 (SCR)
を高速でオンとするが、本発明では第1開閉器1(SW The turning on at high speed, but in the present invention the first switch 1 (SW
)をオフとした直後に、電流検出手段4(CT)に電流が流れていないことを制御装置7が確認する。 ) Immediately after turning off the controller 7 is to verify that no current flows through the current detection means 4 (CT). もし第1開閉器1(SW)をオフとしたにもかかわらず電流検出手段4(CT)に電流が流れていれば、第1開閉器1(SW)がオフしていない等の異常があるので、直ちに異常警報を発し動作を停止する。 If if current flows through the first switch 1 (SW) even though you turn off the current detector 4 (CT), first switch 1 (SW) is an abnormality such as that is not turned off so, immediately stop the operation issued an abnormal alarm.

【0013】正常であることが確認されれば、制御装置7が無接点開閉器3(SCR)を高速でオンとしたうえで電流検出手段6(CT)に電流が流れていることを確認する。 [0013] If it is confirmed to be normal, the control unit 7 confirms that current is flowing through the current detection means 6 upon which are turned ON the contactless switch 3 (SCR) at a high speed (CT) . 無接点開閉器3(SCR)をオンとしたことにより相切り替えができたこととなるが、無接点開閉器3(SCR)に長時間電流を流すことを避けるためにこれに引続き制御装置7が第2開閉器(SW)を閉じる。 Solid state switch 3 (SCR) becomes a fact that could phase switching by which are turned ON, continue controller 7 in this order to avoid passing a long current-free contact switch 3 (SCR) is second switch to (SW) is closed. このため、無接点開閉器3(SCR)をオンとしたにもかかわらず電流検出手段6(CT)が電流を検出しない場合にも、警報を発するだけで第2開閉器(SW)を閉じる。 Therefore, even if despite current detector 6 noncontact switch 3 (SCR) was turned on (CT) does not detect the current, it closes the second switch only issue a warning (SW).

【0014】そして電流検出手段5(CT)に電流が流れていることを確認したうえで破線で示すように電線を結線する。 [0014] and connecting the wire as shown by a broken line after confirming that the current flows through the current detecting means 5 (CT). しかし、もし電流検出手段5(CT)に電流が流れていない場合には第2開閉器(SW)がオンとなっていないため、異常警報を発して動作を停止する。 However, if because when no current flows through the current detecting means 5 (CT) is not the second switch (SW) is turned on, and stops the operation issues an abnormality alarm. このようにして電線の結線を完了したら、無接点開閉器3(SCR)と第2開閉器(SW)をオフとして各機器を取り外し、全ての作業が完了する。 After completing the connection of the wire in this way, remove the respective devices contactless switch 3 (SCR) and the second switch to (SW) as an off, all work is completed.

【0015】なお、相切り替えの瞬間における各開閉器の動作のタイムチャートを図3に示す。 [0015] Incidentally, a time chart of the operation of the switch at the instant of phase switching in FIG. このタイムチャートにTとして示された時間が停電時間となるが、その長さは商用周波数の半サイクル程度で済むので、ほとんど無停電で相切り替え工事を行えることとなる。 The time shown as T in the time chart is a power failure time, the length is so requires only half-cycle of about commercial frequency, and thus capable of performing phase switching work most uninterruptible.

【0016】〔実施例2〕図4は第2の実施例の構成を示す回路図であり、図1における第1開閉器(SW) [0016] Example 2 FIG. 4 is a circuit diagram showing the configuration of a second embodiment, the first switch in FIG. 1 (SW)
と並列に無接点開閉器8(SCR)を取り付けた点のみが第1の実施例と相違する。 Only parallel to the point of attaching the non-contact switch 8 (SCR) and is different from the first embodiment. 図5は第2の実施例の動作を示すフローチャートであるが、第1の実施例では第1開閉器(SW)をオフとし、電流検出手段4(CT FIG Although 5 is a flow chart showing the operation of the second embodiment, in the first embodiment is turned off first switch the (SW), the current detecting unit 4 (CT
)に電流が流れていないことを確認してこれに引続き無接点開閉器3(SCR)を高速でオンとする。 Confirmed this to continue non-contact switch 3 and the (SCR) to turn on at a high speed that the) current does not flow through the. これに対して、第2の実施例では第1開閉器(SW)をオフとする前に無接点開閉器8(SCR)をオンとする。 In contrast, in the second embodiment to turn on the non-contact switch 8 (SCR) before turning off the first switch to (SW). そして無接点開閉器8(SCR)をオフとして電流検出手段4(CT)に電流が流れていないことを確認したうえで、無接点開閉器3(SCR)を高速でオンとする。 And after confirming that the current does not flow to the current detection unit 4 (CT) for non-contact switch 8 (SCR) as an off-free contact switch 3 (SCR) is turned on at high speed. またもし無接点開閉器8(SCR)をオフとしたにもかかわらず電流検出手段4(CT)に電流が流れている場合には、無接点開閉器8(SCR)がオフとなっていないため、短絡事故を防止するために第1開閉器(SW)をオンとしたのち警報を発して動作を停止する。 Also if when the current in the non-contact switch 8 Despite current detector 4 (SCR) and off (CT) is flowing, since the non-contact switch 8 (SCR) is not turned off to stop the operation an alarm after the first switch to (SW) are turned oN in order to prevent short circuit. その他の部分は図2と同様である。 Other portions are the same as in FIG. なお、 It should be noted that,
図6は第2の実施例の動作を示すタイムチャートであり、無接点開閉器8(SCR)を取り付けたことにより停電時間tがより短くなったことが分かる。 Figure 6 is a time chart showing the operation of the second embodiment, it can be seen that the power failure time t becomes shorter by fitted with a non-contact switch 8 (SCR).

【0017】 [0017]

【発明の効果】以上に説明したように、本発明の高圧三相配電線の相切替装置は、実質的に無停電で相の切り替えを行うことができ、しかも各開閉器に電流検出手段を設けて各開閉器が動作する度に電流を検出して相の切替えを行っていくようにしたので、短絡事故等の可能性を完全に防止することができる。 As described above, according to the present invention, the phase switching device of the high-voltage three-phase distribution line of the present invention, can switch phase substantially uninterrupted, yet provided a current detecting means to each switch since each switch is as intended to make switching of phases by detecting the current each time the operating Te, it is possible to completely prevent the possibility of such a short circuit accident. よって本発明は従来の問題点を解決した高圧三相配電線の相切替装置として、産業の発展に寄与するところはきわめて大きいものである。 Accordingly, the present invention is a phase switching device of the high-voltage three phase distribution line that solves conventional problems, when contributing to the development of industry is extremely large.

【図面の簡単な説明】 BRIEF DESCRIPTION OF THE DRAWINGS

【図1】第1の実施例の構成を示す回路図である。 1 is a circuit diagram showing a configuration of a first embodiment.

【図2】第1の実施例の装置の動作を説明するフローチャートである。 2 is a flowchart for explaining the operation of the apparatus of the first embodiment.

【図3】第1の実施例の装置における、相切替え動作のタイムチャートである。 [3] the apparatus of the first embodiment, is a time chart of the phase switching operation.

【図4】第2の実施例の構成を示す回路図である。 4 is a circuit diagram showing a configuration of a second embodiment.

【図5】第2の実施例の装置の動作を説明するフローチャートである。 5 is a flowchart for explaining the operation of the apparatus of the second embodiment.

【図6】第2の実施例の装置における、相切替え動作のタイムチャートである。 [6] in the apparatus of the second embodiment is a time chart of the phase switching operation.

【図7】先願の相切替装置の構成を示す回路図である。 7 is a circuit diagram showing the configuration of a prior application of the phase switching device.

【符号の説明】 DESCRIPTION OF SYMBOLS

1 第1開閉器(SW) 2 第2開閉器(SW) 3 無接点開閉器(SCR) 4 電流検出手段(CT) 5 電流検出手段(CT) 6 電流検出手段(CT) 7 制御装置 8 無接点開閉器(SCR) 1 first switch (SW) 2 second switch (SW) 3 noncontact switch (SCR) 4 current detecting means (CT) 5 current detecting means (CT) 6 current detecting means (CT) 7 control unit 8 No contact switch (SCR)

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Claims (2)

    (57)【特許請求の範囲】 (57) [the claims]
  1. 【請求項1】 配電線の切断される相の切断点と並列に第1開閉器を取り付けるとともに、前記切断点よりも負荷側の点と接続される相との間に第1開閉器の開路に引続き高速で閉動作を行う無接点開閉器を取り付け、さらにこの無接点開閉器と並列にその閉動作に引続き閉動作を行う第2開閉器を取り付けた相切替装置において、各開閉器に電流検出手段を設けるとともに、各開閉器が動作する度に電流を検出して相の切替えを行っていく制御装置を設けたことを特徴とする高圧三相配電線の相切替装置。 With 1. A mounting a first switch in parallel with the cutting point of the cut is phase distribution line, an open circuit of the first switch between the phases to be connected to a point of the load side of the cutting point subsequently fast mounting a non-contact switch to perform the closing operation, yet continue phase-switching apparatus fitted with a second switch that performs the closing operation to the closing operation in parallel with the non-contact switch, current in each switch to provided with a detecting means, the phase switching device of each switch is a high-pressure three-phase distribution line, characterized in that a by going control device performs switching of the phases to detect the current each time the operating.
  2. 【請求項2】 第1開閉器と並列に無接点開閉器を取り付けたことを特徴とする請求項1記載の高圧三相配電線の相切替装置。 2. A phase switching device of the high-voltage three-phase distribution line according to claim 1, wherein a fitted with a non-contact switch in parallel with the first switch.
JP5061736A 1993-03-22 1993-03-22 Phase switching device of the high-voltage three phase distribution line Expired - Fee Related JP2773763B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5061736A JP2773763B2 (en) 1993-03-22 1993-03-22 Phase switching device of the high-voltage three phase distribution line

Applications Claiming Priority (1)

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JP5061736A JP2773763B2 (en) 1993-03-22 1993-03-22 Phase switching device of the high-voltage three phase distribution line

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JPH06276686A JPH06276686A (en) 1994-09-30
JP2773763B2 true JP2773763B2 (en) 1998-07-09

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KR101079900B1 (en) * 2007-10-31 2011-11-04 주식회사 케이티 Static transfer switch device, power supply apparatus using the switch device and switching method thereof
JP6234125B2 (en) * 2013-09-10 2017-11-22 三菱電機株式会社 Load change device

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JPS4952034U (en) * 1972-08-14 1974-05-08
JPS63917A (en) * 1986-06-18 1988-01-05 Ngk Insulators Ltd Contactless switch
JPS648837A (en) * 1987-06-30 1989-01-12 Shin Kobe Electric Machinery Ac no-break power unit

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