JP3515271B2 - Power distribution equipment - Google Patents
Power distribution equipmentInfo
- Publication number
- JP3515271B2 JP3515271B2 JP06064996A JP6064996A JP3515271B2 JP 3515271 B2 JP3515271 B2 JP 3515271B2 JP 06064996 A JP06064996 A JP 06064996A JP 6064996 A JP6064996 A JP 6064996A JP 3515271 B2 JP3515271 B2 JP 3515271B2
- Authority
- JP
- Japan
- Prior art keywords
- power
- ground fault
- load switch
- distribution equipment
- air load
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Emergency Protection Circuit Devices (AREA)
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、受配電設備に係
り、地絡保護装置を組み込んだ自動開路機構付きの主遮
断装置を構成する高圧気中負荷開閉器を自動開路させる
方式に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power receiving and distributing facility, and relates to a system for automatically opening a high-pressure air load switch which constitutes a main circuit breaker with an automatic circuit opening mechanism incorporating a ground fault protection device. .
【０００２】[0002]
【従来の技術】受配電設備において、主遮断装置とし
て、高圧限流ヒューズと高圧気中負荷開閉器とを組み合
わせて用いるものがあり、地絡保護装置として、零相変
流器と地絡継電器とが用いられている。また、主遮断装
置を自動開路するために、高圧気中負荷開閉器には高圧
気中負荷開閉器トリップコイルが設けられている。この
回路構成において、地絡事故が発生した場合、零相変流
器により検出した地絡電流を地絡継電器により整定値と
比較し、地絡電流が整定値以上であれば、地絡継電器が
動作する。この地絡継電器の動作により、高圧気中負荷
開閉器トリップコイルが励磁され、当該高圧気中負荷開
閉器は自動開路する。このようにして、受配電設備の地
絡保護がなされていた。2. Description of the Related Art In power distribution equipment, there is a main breaker that uses a combination of a high-voltage current limiting fuse and a high-voltage air load switch, and a ground fault protection device is a zero-phase current transformer and a ground fault relay. And are used. Further, in order to automatically open the main circuit breaker, the high pressure air load switch is provided with a high pressure air load switch trip coil. In this circuit configuration, when a ground fault accident occurs, the ground fault current detected by the zero-phase current transformer is compared with the set value by the ground fault relay, and if the ground fault current is more than the set value, the ground fault relay is Operate. By the operation of this ground fault relay, the high-voltage air load switch trip coil is excited, and the high-pressure air load switch automatically opens. In this way, the ground fault of the power receiving and distribution equipment was protected.
【０００３】[0003]
【発明が解決しようとする課題】受配電設備のＪＩＳ規
格で規定している回路構成において、地絡により地絡保
護装置が動作し、高圧気中負荷開閉器が自動開路後、地
絡原因を除去しないまま高圧気中負荷開閉器を手動で再
投入する場合、手動の投入速度が速いと前記高圧気中負
荷開閉器は直ちに再開路する。しかし、前記手動の投入
速度が遅いと、手動投入の操作力とトリップコイルの開
路操作力とが相殺され、高圧気中負荷開閉器が自動開路
しない場合がある。このように、高圧気中負荷開閉器が
再開路しない場合、短時間定格である高圧気中負荷開閉
器トリップコイルが焼損するばかりでなく、受電元であ
る電力会社変電所への事故が波及して拡大する。In the circuit configuration specified by the JIS standard for power distribution equipment, the ground fault protection device operates due to a ground fault, and after the high-voltage air load switch is automatically opened, the cause of the ground fault is determined. When the high pressure air load switch is manually re-closed without being removed, the high pressure air load switch immediately restarts when the manual loading speed is high. However, if the manual closing speed is low, the manual closing operation force and the trip coil opening operation force may be canceled, and the high-pressure air load switch may not be automatically opened. In this way, if the high-pressure air load switch does not restart, not only the short-time rated high-pressure air load switch trip coil will burn out, but also an accident will spread to the power company substation, which is the power receiving source. To expand.
【０００４】これに対して、例えば下記のような技術が
提案されている。「非接地系および高抵抗接地系で相電
圧を検出し、この検出電圧と健全時相電圧とを合成して
地絡電圧を取り出し、この地絡電圧と零相電流信号の位
相比較により、前記健全時相電圧が確立するまで間、零
相電流信号が設定値以上であることを条件に、投入した
遮断器を再開路するようにした地絡方向継電器」であ
る。これに関連するものとしては、特開平０７−０４６
７５０号公報記載の技術がある。On the other hand, for example, the following techniques have been proposed. "A phase voltage is detected by a non-grounded system and a high resistance grounded system, a ground fault voltage is taken out by combining the detected voltage and a sound time phase voltage, and the ground fault voltage and a zero phase current signal are phase-compared to each other. It is a ground fault direction relay that restarts the closed circuit breaker on condition that the zero-phase current signal is at or above the set value until the sound time phase voltage is established. " Related to this, Japanese Patent Laid-Open No. 07-046
There is a technique described in Japanese Patent Publication No. 750.
【０００５】上記技術は、１相に設けた地絡検出器で、
地絡検出ができ、地絡事故中に遮断器を投入しても、確
実に動作して再開路するようにした優れたものである
が、前記の検出電圧と健全時相電圧との合成による地絡
電圧の取り出しには、遅延回路、反転回路等を必要と
し、構成が複雑となり、コストも高くなり、簡便な構成
という点では配慮が足りなかった。本発明は、かかる従
来の問題点を解決するためになされたものであり、高圧
気中負荷開閉器の投入速度が遅い場合でも、高圧気中負
荷開閉器の動作不良を防止し、再回路させる回路を備え
た受配電設備を提供することをその目的とする。The above technique is a ground fault detector provided in one phase.
The ground fault can be detected, and even if the circuit breaker is turned on during a ground fault, it operates reliably and restarts. However, it is a combination of the above detection voltage and the sound time phase voltage. The extraction of the ground fault voltage requires a delay circuit, an inverting circuit, etc., which complicates the configuration, increases the cost, and lacks consideration in terms of a simple configuration. The present invention has been made to solve such conventional problems, and prevents malfunction of the high-pressure air load switch and re-circuit even when the closing speed of the high-pressure air load switch is slow. It is an object of the present invention to provide a power receiving and distributing facility provided with a circuit.
【０００６】[0006]
【課題を解決するための手段】上記目的を解決するた
め、本発明に係る受配電設備の構成は、電力会社から受
電線路を通じて受電し、当該受電電力を負荷に供給する
受配電設備で、地絡継電器により受電線路の地絡電流を
検出し、高圧気中負荷開閉器を自動開路させる地絡保護
回路を備えた受配電設備において、地絡状態における前
記高圧気中負荷開閉器の再投入時、前記地絡継電器の電
源供給開始時を遅らせるようにしたことを特徴とするも
のである。前項記載の受配電設備において、前記高圧気
中負荷開閉器のトリップコイルに、ブザーを並列に配設
したことを特徴とするものである。前項記載のいずれか
の受配電設備において、前記高圧気中負荷開閉器のトリ
ップコイルに、開閉機構を直列に配設したことを特徴と
するものである。すなわち、要約して機能的に説明すれ
ば、本発明の目的は、地絡継電器の電源回路にディレイ
タイマを追加し、地絡継電器の電源立上り時間を遅らせ
ることにより達成される。In order to solve the above-mentioned problems, the structure of the power receiving and distributing equipment according to the present invention is a power receiving and distributing equipment which receives power from a power company through a power receiving line and supplies the received power to a load. When the high voltage air load switch is turned on again in a ground fault condition in the power distribution equipment equipped with a ground fault protection circuit that detects the ground fault current of the power receiving line with a fault relay and automatically opens the high voltage air load switch. It is characterized in that the start of power supply to the ground fault relay is delayed. In the power distribution equipment according to the preceding paragraph, a buzzer is arranged in parallel with the trip coil of the high-pressure air load switch. In any of the power receiving and distributing equipment described in the preceding paragraph, an opening / closing mechanism is arranged in series with a trip coil of the high-pressure air load switch. That is, when summarized and functionally described, the object of the present invention is achieved by adding a delay timer to the power supply circuit of the ground fault relay and delaying the power supply rise time of the ground fault relay.
【０００７】[0007]
図１は、本発明の一実施形態に係る受配電設備の３線接
続図である。この受配電設備は、以下、同様であるが、
説明のため例として、１次側６．６ＫＶ，２次側３．３
ＫＶの変圧器より３相３線式により受配電されているも
のとする。FIG. 1 is a 3-line connection diagram of a power receiving and distributing facility according to an embodiment of the present invention. This power receiving and distribution equipment is the same as the following,
As an example for explanation, the primary side is 6.6 KV and the secondary side is 3.3.
It is assumed that power is being received and distributed from the KV transformer using a 3-phase 3-wire system.
【０００８】主遮断装置は、高圧限流ヒューズ付高圧気
中負荷開閉器（以下、ＬＢＳという）１は、定格７．２
ＫＶ，２００Ａ、手動操作式トリップコイル付であり、
地絡保護装置として、零相変流器（以下、ＺＣＴとい
う）２及び地絡継電器（以下、ＧＲＹという）３を備
え、自動開路させるための装置として、高圧気中負荷開
閉器トリップコイル（以下、トリップコイルという）４
が高圧限流ヒューズ付ＬＢＳ１に配設されている。The main circuit breaker is a high-voltage air load switch (hereinafter referred to as LBS) 1 with a high-voltage current limiting fuse, and has a rating of 7.2.
KV, 200A, with a manually operated trip coil,
As a ground fault protection device, a zero-phase current transformer (hereinafter referred to as ZCT) 2 and a ground fault relay (hereinafter referred to as GRY) 3 are provided, and as a device for automatically opening a circuit, a high-voltage air load switch trip coil (hereinafter referred to as “trip coil”) , Called trip coil) 4
Are arranged in the LBS1 with a high-voltage current limiting fuse.
【０００９】前記高圧限流ヒューズ付ＬＢＳ１の負荷側
には、単相３線式一次側３．３ＫＶ、二次側２１０−１
０５Ｖの電灯用変圧器５が接続されている。そして、二
次側２１０−１０５Ｖに応じて出力できるターミナル
（以下、ＴＢという）１，４，３が設けられている。On the load side of the LBS1 with a high-voltage current limiting fuse, a single-phase three-wire type primary side 3.3 KV and a secondary side 210-1.
A 05V electric light transformer 5 is connected. Then, terminals (hereinafter, referred to as TB) 1, 4, 3 capable of outputting according to the secondary side 210-105V are provided.
【００１０】前記ＺＣＴ２は、ｋｔ、ｌｔが１次側端子
であり、ＴＢ１，２より通常１．２５ｍｍ2ＩＶ電線で
配線されている。また、前記ＺＣＴ２の二次側端子ｋ，
ｌは、配線Ｚ1，Ｚ２によりＧＲＹ３の入力端子３７，
３８に接続されている。ＧＲＹ３は、その電源端子３
１，３２がタイムユニット６の出力端子６４，６８と直
列に接続され、接点をその間に内設する端子３４，３６
が、トリップコイル４の端子Ｔ１，Ｔ２とそれぞれ接続
されている。なお、トリップコイル４は、ＡＣ１００Ｖ
で動作するようになっている。タイムユニット６は、前
記出力端子６４，６８の他に、電源用端子１３，１４が
設けられている。In the ZCT2, kt and lt are primary side terminals, and are normally wired by 1.25 mm 2 IV electric wires from TB1 and TB2. In addition, the secondary side terminal k of the ZCT2,
1 is an input terminal 37 of GRY3 by wiring Z1 and Z2,
38. GRY3 is its power supply terminal 3
The terminals 1, 32 are connected in series with the output terminals 64, 68 of the time unit 6, and the contacts 34, 36 with the contacts internally provided therebetween.
Are connected to the terminals T1 and T2 of the trip coil 4, respectively. The trip coil 4 is AC100V.
It is designed to work with. The time unit 6 is provided with power supply terminals 13 and 14 in addition to the output terminals 64 and 68.
【００１１】前記電灯用変圧器５のＡＣ１００Ｖの出力
端子ＴＢ１，４は、タイムユニット６の電源用端子１
３，１４とそれぞれ接続されている。また、前記出力端
子ＴＢ１は、ＧＲＹ３の端子３４と接続され、前記端子
４と、前記端子３４と接点を介して接続される端子３６
と、トリップコイル４の端子Ｔ１からＴ２と経て出力端
子ＴＢ４と接続されている。また、前記ＡＣ１００Ｖの
出力端子ＴＢ１，４からでる電源線の一方には、保護用
ヒューズＥＦ１０Ａが設けられている。なお、図示点線
で示すＣＨ１は、ケーブルヘッドであり、ＶＣＴは、積
算電力用変成器である。The AC100V output terminals TB1 and 4 of the electric light transformer 5 are power source terminals 1 of the time unit 6.
3 and 14, respectively. Further, the output terminal TB1 is connected to the terminal 34 of the GRY3, and the terminal 4 and the terminal 36 connected to the terminal 34 via a contact.
Then, the terminals T1 to T2 of the trip coil 4 are connected to the output terminal TB4. A protective fuse EF10A is provided on one of the power supply lines extending from the output terminals TB1 and TB4 of the AC100V. CH1 indicated by a dotted line in the figure is a cable head, and VCT is a transformer for integrated power.
【００１２】上記構成の受配電設備の保護動作を説明す
る。まず、本実施の形態では、前記の如く、タイムユニ
ツト６を地絡継電器３の電源端子３１，３２に直列に接
続しているが、そのオンディレイタイマの動作時間は、
電力会社変電所の地絡動作時間に対応して設定するが、
通常は、下記により予め設定する。タイムユニツト６の
タイマ設定時間＋ＧＲＹ３の動作時間＋ＬＢＳ１の開極
時間≦電力会社変電所の地絡動作時間A protective operation of the power receiving / distributing equipment having the above configuration will be described. First, in the present embodiment, as described above, the time unit 6 is connected in series to the power supply terminals 31 and 32 of the ground fault relay 3, but the operating time of the on-delay timer is
Set according to the ground fault operating time of the power company substation,
Usually, it is preset by the following. Timer unit 6 time + GRY3 operation time + LBS1 contact opening time ≤ Power company substation ground fault operation time
【００１３】いま、地絡事故を生じ、ＺＣＴ２により零
相電流を検出し、この零相電流がＧＲＹ３の入力端子３
７，３８より入力され、且つ電源端子３１，３２にも電
源が供給されているので、高圧限流ヒューズ付ＬＢＳ１
が開路される。次に、地絡事故がそのまま継続した状態
で、高圧限流ヒューズ付ＬＢＳ１を再投入されると、Ｚ
ＣＴ２により零相電流が検出され、この零相電流がＧＲ
Ｙ３の入力端子３７，３８より入力される。Now, a ground fault has occurred, a zero-phase current is detected by ZCT2, and this zero-phase current is input to the input terminal 3 of GRY3.
LBS1 with high-voltage current limiting fuse, since it is input from 7, 38 and power is also supplied to the power supply terminals 31, 32.
Is opened. Next, when the LBS1 with a high-voltage current limiting fuse is turned on again while the ground fault accident continues, Z
A zero-phase current is detected by CT2, and this zero-phase current is GR
It is input from the input terminals 37 and 38 of Y3.
【００１４】一方、電灯用変圧器５のＡＣ１００Ｖの出
力端子ＴＢ１，４間およびこれと接続されるタイムユニ
ツト６の電源用端子１３，１４には電源が供給される
が、タイムユニツト６のオンディレイタイマの設定時間
を経過しないと、タイムユニツト６の出力端子６４，６
８からＧＲＹ３の電源端子３１，３２へ電源が供給され
ない。したがって、ＧＲＹ３の電源の復帰を遅らせるこ
とができる。On the other hand, power is supplied between the output terminals TB1 and 4 of AC100V of the electric light transformer 5 and the power supply terminals 13 and 14 of the time unit 6 connected thereto, but the on-delay of the time unit 6 is delayed. If the set time of the timer does not elapse, the output terminals 64, 6 of the time unit 6
No power is supplied to the power supply terminals 31 and 32 of GRY3 from 8. Therefore, it is possible to delay the restoration of the power source of GRY3.
【００１５】したがって、高圧限流ヒューズ付ＬＢＳ１
のトリップコイル４は付勢されないため、前記手動によ
る投入速度が遅い場合でも、手動投入の操作力とトリッ
プコイルの開路操作力とが相殺されことなく、高圧限流
ヒューズ付ＬＢＳ１の不動作を防止することができ、前
記ＬＢＳ１のトリップコイル４の焼損や電力会社変電所
への波及事故を防止できる。Therefore, the LBS1 with a high-voltage current limiting fuse
Since the trip coil 4 is not energized, even if the manual closing speed is slow, the operation force of the manual closing and the opening operation force of the trip coil are not offset, and the LBS 1 with a high-voltage current limiting fuse is prevented from malfunctioning. Therefore, it is possible to prevent the trip coil 4 of the LBS 1 from being burnt out and the accident from spreading to the power company substation.
【００１６】しかも、高圧限流ヒューズ付ＬＢＳ１自体
を改良することなく、従来の回路構成に、タイムユニッ
ト６を追加するだけで、安価に且つ簡単な構成で高圧限
流ヒューズ付ＬＢＳ１のトリップフリー機能が実現でき
経済的な効果も奏する。更に、高圧限流ヒューズ付ＬＢ
Ｓ１の開路操作を、タイマを用いて行なうことで、上記
した如く、電力会社変電所の地絡動作時間により短く、
タイムユニット６の動作時間を設定できるため、高圧限
流ヒューズ付ＬＢＳ１の確実な開路が可能であり安全性
が高い。Moreover, the trip-free function of the LBS1 with a high-voltage current limiting fuse is made inexpensive and simple by adding the time unit 6 to the conventional circuit configuration without improving the LBS1 with a high-voltage current limiting fuse. Can be realized and also has an economical effect. LB with high voltage limiting fuse
By performing the opening operation of S1 using the timer, as described above, it is shorter due to the ground fault operation time of the electric power company substation,
Since the operating time of the time unit 6 can be set, the LBS 1 with a high-voltage current limiting fuse can be opened reliably and the safety is high.
【００１７】〔実施の形態 ２〕
本発明に係る他の実施形態を図２により説明する。図２
は、本発明の他の一実施形態に係る受配電設備の３線接
続図である。図中、図１と同一符号は同等部分であるの
で再度の説明を省略し、新たな符号のみを説明する。７
はブザーである。本実施形態の受配電設備は、図１の
〔実施形態 １〕の説明で述べた基本構成であり、相違
点は、タイムユニツト６を省くと共に、ブザー７を高圧
限流ヒューズ付ＬＢＳ１のトリップコイル４に並列に、
ＧＲＹ３の電源端子３２と出力端子３６との間に接続さ
れているところである。前記図１の〔実施形態 １〕と
共通する部分については説明を省略し、特徴的な部分に
ついて説明する。このブザー７は、地絡事故継続状態
で、高圧限流ヒューズ付ＬＢＳ１が開路後の再投入され
た際、当該高圧限流ヒューズ付ＬＢＳ１が開路しない場
合、電灯用変圧器５から電源供給が連続するので鳴り続
ける。よって、高圧限流ヒューズ付ＬＢＳ１が不動作で
あることの注意を喚起することができる。[Embodiment 2] Another embodiment of the present invention will be described with reference to FIG. Figure 2
[Fig. 4] is a three-line connection diagram of a power receiving and distributing facility according to another embodiment of the present invention. In the figure, the same reference numerals as those in FIG. 1 are the same parts, and therefore, a repetitive description will be omitted and only new reference numerals will be described. 7
Is a buzzer. The power distribution equipment of the present embodiment has the basic configuration described in the description of [Embodiment 1] of FIG. 1, except that the time unit 6 is omitted and the buzzer 7 is a trip coil of the LBS 1 with a high-voltage current limiting fuse. In parallel with 4,
It is just connected between the power supply terminal 32 and the output terminal 36 of GRY3. Descriptions of parts common to those of [Embodiment 1] of FIG. 1 will be omitted, and only characteristic parts will be described. The buzzer 7 is continuously supplied with power from the electric light transformer 5 when the LBS1 with a high-voltage current limiting fuse is not turned on again when the LBS1 with a high-voltage current limiting fuse is turned on again after the circuit is opened in a ground fault accident continuous state. I will continue to ring. Therefore, it is possible to call attention to the fact that the LBS1 with a high-voltage current limiting fuse does not operate.
【００１８】〔実施の形態 ３〕
本発明に係るさらに他の実施形態を図３により説明す
る。図３は、本発明のさらに他の一実施形態に係る受配
電設備の３線接続図である。図中、図２と同一符号は同
等部分であるので再度の説明を省略し、新たな符号のみ
を説明する。この受配電設備は、基本的には、図２の
〔実施形態 ２〕の説明で述べた構成であり、押釦スイ
ッチ（以下、ＰＢスイッチという）８のｂ接点をＧＲＹ
３の出力端子３６と高圧限流ヒューズ付ＬＢＳ１のトリ
ップコイル４の端子Ｔ１間に、当該トリップコイル４に
対して、直列に接続されている。前記図１の〔実施形態
１〕、前記図２の〔実施形態 ２〕と共通する部分につ
いては説明を省略し、特徴的な部分について説明する。
本実施形態は、図２の〔実施形態 ２〕に示す如く、ブ
ザー７が鳴り続けた場合、ＰＢスイッチ８を操作するこ
とにより、ＬＢＳ１のトリップコイル４の励磁が一旦リ
セットされ再度励磁されるため、高圧限流ヒューズ付Ｌ
ＢＳ１を開路することができる。[Embodiment 3] Still another embodiment of the present invention will be described with reference to FIG. FIG. 3 is a 3-line connection diagram of a power receiving and distributing facility according to still another embodiment of the present invention. In the figure, the same reference numerals as those in FIG. 2 are the same parts, and therefore the repetitive description will be omitted and only new reference numerals will be described. This power receiving / distributing equipment basically has the configuration described in the explanation of [Embodiment 2] of FIG. 2, and the b contact of the push button switch (hereinafter referred to as PB switch) 8 is GRY.
3 is connected in series with the trip coil 4 between the output terminal 36 and the terminal T1 of the trip coil 4 of the LBS1 with a high-voltage current limiting fuse. Description of parts common to [Embodiment 1] of FIG. 1 and [Embodiment 2] of FIG. 2 will be omitted, and characteristic parts will be described.
In the present embodiment, as shown in [Embodiment 2] of FIG. 2, when the buzzer 7 continues to ring, operating the PB switch 8 resets the excitation of the trip coil 4 of the LBS 1 once and re-excites it. , L with high-voltage current limiting fuse
BS1 can be opened.
【００１９】[0019]
【００２０】[0020]
【発明の効果】以上説明した如く、本発明の構成によれ
ば、ＬＢＳの動作不良の防止が可能であり、ＬＢＳトリ
ップコイルの焼損や電力会社変電所への波及事故を防止
できる受配電設備を提供することができる。しかも、Ｌ
ＢＳ自体を改良することなく、安価にＬＢＳのトリップ
フリー機能が実現でき、経済的な効果もある。更に、電
力会社変電所の地絡動作時間により、タイマの動作時間
を設定できるため、ＬＢＳの確実な開路が可能であり安
全性を高める効果もある。As described above, according to the configuration of the present invention, it is possible to prevent the malfunction of the LBS, and to prevent the burnout of the LBS trip coil and the transmission accident to the power company substation. Can be provided. Moreover, L
The trip-free function of the LBS can be realized at low cost without improving the BS itself, and there is also an economical effect. Furthermore, since the operating time of the timer can be set by the ground fault operating time of the electric power company substation, the LBS can be surely opened, and the safety is improved.
【図１】本発明の一実施形態に係る受配電設備の３線接
続図である。FIG. 1 is a 3-line connection diagram of a power receiving and distributing facility according to an embodiment of the present invention.
【図２】本発明の他の一実施形態に係る受配電設備の３
線接続図である。FIG. 2 is a diagram of a power receiving / distributing facility according to another embodiment of the present invention.
It is a line connection diagram.
【図３】本発明のさらに他の一実施形態に係る受配電設
備の３線接続図である。FIG. 3 is a 3-line connection diagram of a power receiving and distributing facility according to still another embodiment of the present invention.
１…高圧限流ヒューズ付ＬＢＳ，２…ＺＣＴ，３…ＧＲ
Ｙ，４…ＬＢＳのトリップコイル，５…電灯変圧器，６
…タイムユニット，７…ブザー，８…ＰＢスイッチ1 ... LBS with high voltage limiting fuse, 2 ... ZCT, 3 ... GR
Y, 4 ... LBS trip coil, 5 ... Light transformer, 6
... Time unit, 7 ... Buzzer, 8 ... PB switch
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.7，ＤＢ名) H02H 3/32 - 3/52 ─────────────────────────────────────────────────── ─── Continuation of the front page (58) Fields surveyed (Int.Cl. 7 , DB name) H02H 3/32-3/52
Claims (3)
当該受電電力を負荷に供給する受配電設備で、地絡継電
器により受電線路の地絡電流を検出し、高圧気中負荷開
閉器を自動開路させる地絡保護回路を備えた受配電設備
において、 地絡状態における前記高圧気中負荷開閉器の再投入時、
前記地絡継電器の電源供給開始時を遅らせるようにした
ことを特徴とする受配電設備。1. Power is received from a power company through a power receiving line,
In the power distribution equipment that supplies the received power to the load, in the power distribution equipment equipped with the ground fault protection circuit that detects the ground fault current of the power receiving line by the ground relay and automatically opens the high voltage air load switch, When the high pressure air load switch is turned on again in the closed state,
A power receiving and distributing facility characterized in that the start of power supply to the ground fault relay is delayed.
並列に配設したことを特徴とする受配電設備。2. The power distribution equipment according to claim 1, wherein a buzzer is arranged in parallel with the trip coil of the high-pressure air load switch.
備において、 前記高圧気中負荷開閉器のトリップコイルに、開閉機構
を直列に配設したことを特徴とする受配電設備。3. The power distribution equipment according to claim 1, wherein an opening / closing mechanism is arranged in series with a trip coil of the high-pressure air load switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP06064996A JP3515271B2 (en) | 1996-03-18 | 1996-03-18 | Power distribution equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP06064996A JP3515271B2 (en) | 1996-03-18 | 1996-03-18 | Power distribution equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH09252526A JPH09252526A (en) | 1997-09-22 |
| JP3515271B2 true JP3515271B2 (en) | 2004-04-05 |
Family
ID=13148401
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP06064996A Expired - Fee Related JP3515271B2 (en) | 1996-03-18 | 1996-03-18 | Power distribution equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3515271B2 (en) |
-
1996
- 1996-03-18 JP JP06064996A patent/JP3515271B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH09252526A (en) | 1997-09-22 |
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