JP2607215Y2 - Accident detection device for DC railway substation - Google Patents
Accident detection device for DC railway substationInfo
- Publication number
- JP2607215Y2 JP2607215Y2 JP1992039569U JP3956992U JP2607215Y2 JP 2607215 Y2 JP2607215 Y2 JP 2607215Y2 JP 1992039569 U JP1992039569 U JP 1992039569U JP 3956992 U JP3956992 U JP 3956992U JP 2607215 Y2 JP2607215 Y2 JP 2607215Y2
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- Prior art keywords
- current
- transformer
- rectifier
- secondary winding
- wire
- Prior art date
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Description
【考案の詳細な説明】[Detailed description of the invention]
【０００１】[0001]
【産業上の利用分野】本考案は交流電力を直流電力に変
換し、トロリー線、フィーダ線等のき電線に供給する直
流電鉄変電所の事故検出装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for detecting an accident in a DC railway substation, which converts AC power into DC power and supplies it to a feeder line such as a trolley wire or a feeder wire.
【０００２】[0002]
【従来の技術】直流電鉄変電所において、夜間列車運行
休止時にトロリー線の着霜を防止するために、数百アン
ペアの電流を強制的に流している。トロリー線への通電
は許容温度上昇の関係で変電所には数百アンペアとなる
ように、図３に示すように数オーム程度の抵抗を入れて
調整している。2. Description of the Related Art In a DC railway substation, a current of several hundred amperes is forcibly applied in order to prevent frost on a trolley line during nighttime train operation suspension. As shown in FIG. 3, the current supply to the trolley wire is adjusted by inserting a resistance of several ohms so that the substation has a resistance of several hundred amperes due to a rise in allowable temperature.
【０００３】図３においてＳＲは直流変電所の整流器で
あり、その正極は直流高速度遮断器５４Ｆを介してトロ
リー線Ｔに接続され、負極はレール１に接続されてい
る。Ｆはトロリー線Ｔに並列接続されたフィーダ線であ
り、電流調整抵抗Ｒを介して整流器ＳＲの負極に接続さ
れている。Ｄはダイオードである。２は整流器ＳＲとト
ロリー線Ｔを結ぶ電路に設けられたΔＩ形故障選択装置
である。In FIG. 3, SR is a rectifier of a DC substation, and its positive electrode is connected to the trolley wire T via a DC high-speed circuit breaker 54F, and its negative electrode is connected to the rail 1. F is a feeder line connected in parallel to the trolley line T, and is connected to the negative electrode of the rectifier SR via a current adjustment resistor R. D is a diode. Reference numeral 2 denotes a ΔI type fault selection device provided on an electric circuit connecting the rectifier SR and the trolley wire T.
【０００４】上記のように構成された装置において、整
流器ＳＲの出力電流は図示実線の矢印のように、直流高
速度遮断器５４Ｆ、トロリー線Ｔ、フィーダ線Ｆを通っ
て流れ、同一変電所に帰ってきて電流調整抵抗Ｒを介し
て整流器ＳＲの負極側に流れる。[0004] In the device configured as described above, the output current of the rectifier SR flows through the DC high-speed circuit breaker 54F, the trolley line T, and the feeder line F, as indicated by the solid line arrow in the figure, and goes to the same substation. After returning, it flows to the negative electrode side of the rectifier SR via the current adjusting resistor R.
【０００５】上記装置のトロリー線の許容温度上昇に対
する保護は、トロリー線、レール間の短絡故障は大電流
が流れるために、従来より直流変電所の保護として使わ
れているΔＩ（デルタ・アイ）形故障選択装置２による
か、又は直流高速度遮断器５４Ｆの目盛設定の自己遮断
で保護している。[0005] The above-mentioned device protects against the allowable temperature rise of the trolley wire because a short-circuit fault between the trolley wire and the rail causes a large current to flow. Therefore, ΔI (delta eye) which has been conventionally used as protection for DC substations is used. The protection is provided by the type failure selection device 2 or by the self-interruption of the scale setting of the DC high-speed circuit breaker 54F.
【０００６】またトロリー線とフィーダ線の短絡（例え
ばダイオード故障）に対しては、直流変流器（ＤＣＣ
Ｔ）より出力電流を監視する装置を設計し、出力電流と
して設定した（抵抗値調整による）電流より数十アンペ
ア大きい値の出力電流となったことにより過電流警報器
３で、遮断保護している。[0006] In addition, when a trolley wire and a feeder wire are short-circuited (for example, a diode failure), a DC current transformer (DCC) is used.
T) A device for monitoring the output current is designed, and the output current is several tens of amperes larger than the current set by the output current (by adjusting the resistance value). I have.
【０００７】[0007]
【考案が解決しようとする課題】電鉄用直流変電所の間
隔は広い所で２０Ｋｍ以上となっており、着霜防止のた
めに流す電流はトロリー線とフィーダ線の合計で約４０
Ｋｍ程度も流れる。例えばトロリー線抵抗０．１７７Ω
／Ｋｍ、フィーダ線抵抗０．０２８２Ω／Ｋｍで４０Ｋ
ｍの合成抵抗は、２０Ｋｍ×（０．１７７Ω＋０．０２
８２Ω）＝４．１０４Ω／２０Ｋｍとなる。[Problems to be Solved by the Invention] The distance between DC substations for railways is 20 km or more in wide places, and the current flowing to prevent frost formation is about 40 in total of the trolley wire and the feeder wire.
It flows about Km. For example, trolley wire resistance 0.177Ω
/ Km, 40K at feeder line resistance 0.0282Ω / Km
m is 20 Km × (0.177Ω + 0.02
82Ω) = 4.104Ω / 20Km.
【０００８】また各々の短絡電流は次の値が想定され
る。 トロリー線−レール短絡は約２５０〜４０００Ａ フィーダ線−レール短絡は約２５０〜３００Ａ 現在き電線の許容電流として３００Ａを変電所より連続
出力している。また保護（直流高速度遮断器５４Ｆのト
リップ条件）は５０００Ａで設定している。したがって
最悪短絡の場合は上記２５０Ａとなり検出が不可能であ
る。またトロリー線とフィーダ線の短絡の場合、ダイオ
ード破損位置によって電流値が変化するため、事故検出
が困難であるという問題がある。すなわち、図３の装置
の要部等価回路図である図４に示すように、整流器ＳＲ
に近い側のダイオードが故障して短絡した場合、トロリ
ー線およびフィーダ線の長さが短くなるため抵抗値が小
さくなるので、破線で示す短絡電流ｉ１は、実線で示す
正常時の電流ｉよりも増大する。このためどの位置のダ
イオードＤが破損したかによって電流値が異なり、事故
検出は非常に困難である。The following values are assumed for the respective short-circuit currents. Trolley line-rail short circuit is about 250-4000A Feeder line-rail short circuit is about 250-300A At present, 300A is output continuously from the substation as the allowable current of the current line. The protection (trip condition of the DC high-speed circuit breaker 54F) is set at 5000A. Therefore, in the worst case of a short circuit, the above-mentioned 250 A is detected and it is impossible to detect it. Further, in the case of a short circuit between the trolley wire and the feeder wire, the current value changes depending on the position where the diode is damaged, so that there is a problem that it is difficult to detect an accident. That is, as shown in FIG. 4 which is an equivalent circuit diagram of a main part of the device of FIG.
Is short-circuited due to the failure of the diode on the side closer to the trolley wire and the length of the trolley wire and the feeder wire are shortened, so that the resistance value becomes small. Increase. Different current values depending on whether the diode D of which position is broken for this, fault detection is very difficult.
【０００９】本考案は上記の点に鑑みてなされたもので
その目的は、着霜防止範囲が広がっても各種短絡事故を
検出し的確な保護が行える直流電鉄変電所の事故検出装
置を提供することにある。The present invention has been made in view of the above points, and an object thereof is to provide an accident detection apparatus for a DC railway substation that can detect various short-circuit accidents and perform accurate protection even if the frost prevention range is widened. It is in.
【００１０】[0010]
【課題を解決するための手段】本考案は、交流電力を直
流電力に変換する整流器と、該整流器の正極に直流高速
度遮断器を介して接続されたトロリー線および該トロリ
ー線に並設されたフィーダ線から成るき電線と、前記ト
ロリー線およびフィーダ線間に接続されたダイオード
と、前記き電線と前記整流器の負極を結ぶ電路に介挿さ
れた電流調整抵抗とを有した直流電鉄変電所において、
前記整流器の正極とき電線を結ぶ電路に介挿されるとと
もに、交流の制御電源の一方の出力端子が二次巻線の一
端に接続され、前記整流器の出力電流を検出する第１の
変流器と、前記整流器の負極と前記電流調整抵抗を結ぶ
電路に介挿されるとともに、前記制御電源の一方の出力
端子が二次巻線の一端に接続され、帰電流を検出する第
２の変流器と、一次巻線の一端が前記第１の変流器の二
次巻線の他端に接続された第１のトランスと、一端が前
記第１のトランスの一次巻線の他端に接続された第１の
一次巻線と、該第１の一次巻線に併設され、一端が、前
記第１の一次巻線の他端に接続されるとともに前記制御
電源の他方の出力端子に接続され、且つ他端が、前記第
２の変流器の二次巻線の他端に接続された第２の一次巻
線とを有した第２のトランスとを備え、前記第１のトラ
ンスの二次巻線電流を整流して得られた整流器出力電流
に基づく主回路電流値と、前記第２のトランスの二次巻
線電流を整流して得られた、整流器出力電流と帰電流の
差電流値とに基づいて短絡事故を判別することを特徴と
としている。According to the present invention, there is provided a rectifier for converting AC power into DC power, a trolley wire connected to a positive electrode of the rectifier via a DC high-speed circuit breaker, and a trolley wire arranged in parallel with the trolley wire. DC railway substation having a feeder line consisting of a feeder line, a diode connected between the trolley line and the feeder line, and a current adjusting resistor inserted in a circuit connecting the feeder line and the negative electrode of the rectifier. At
Once inserted and the path connecting the positive electrode when the wire of the rectifier DOO
One output terminal of the AC control power supply is connected to the secondary winding.
A first terminal connected to an end and detecting an output current of the rectifier.
Connecting a current transformer, a negative electrode of the rectifier, and the current adjusting resistor.
One of the outputs of the control power supply
A terminal is connected to one end of the secondary winding to detect the return current.
Two current transformers and one end of the primary winding is connected to the first current transformer.
A first transformer connected to the other end of the next winding, and one end connected to the front
A first transformer connected to the other end of the primary winding of the first transformer;
A primary winding and a first primary winding are provided side by side.
The other end of the first primary winding and the control
Connected to the other output terminal of the power supply and the other end is connected to the
Second primary winding connected to the other end of the secondary winding of the second current transformer
And a second transformer having a first transformer.
Rectifier output current obtained by rectifying the secondary winding current of the
And the secondary winding of the second transformer
Rectifier output current and return current obtained by rectifying line current
It is characterized in that a short circuit accident is determined based on the difference current value .
【００１１】[0011]
【作用】いま夜間列車運行休止時に、き電線（トロリー
線）の着霜を防止するため、数百アンペアの電流を強制
的に流したとする。正常時は整流器の正極から直流高速
度遮断器を介してき電線に電流が流れ、き電線から電流
調整用抵抗を介して整流器の負極に帰ってくる。このと
きもし変電所近傍のき電線−レール間で短絡事故が発生
すると、大きな短絡電流が流れる。この事故電流は第１
の変流器によって検出され、第１のトランスの二次巻線
電流を整流して得られた整流器出力電流に基づく主回路
電流値は大きな値となる。これによって例えばリレー等
の事故判別手段によって事故が判別され、直流高速度遮
断器をトリップさせる等の保護動作が行われる。[Function] It is assumed that a current of several hundred amperes is forcibly applied to prevent frost formation on the feeder line (trolley line) when the train operation is suspended at night. Under normal conditions, current flows from the positive electrode of the rectifier to the feeder line via the DC high-speed circuit breaker, and returns from the feeder line to the negative electrode of the rectifier via a current adjusting resistor. At this time, if a short circuit accident occurs between the feeder line and the rail near the substation, a large short circuit current flows. The fault current is the first
And the secondary winding of the first transformer
Main circuit based on rectifier output current obtained by rectifying current
The current value becomes a large value. As a result, for example, the fault is determined by a fault determining means such as a relay, and a protective operation such as tripping the DC high-speed circuit breaker is performed.
【００１２】また変電所から遠方のき電線−レール間で
短絡事故が発生した場合は、き電線の抵抗が大きいため
負荷電流より小さな故障電流が流れる。この場合第１の
変流器および第１のトランスのみでは短絡事故を検出す
ることはできないが、整流器出力電流と帰電流の差電流
値が大きくなるので、第２のトランスの二次巻線電流を
整流した電流値により短絡事故を判別することができ
る。When a short circuit accident occurs between the feeder line and the rail far from the substation, a fault current smaller than the load current flows because the feeder line resistance is large. In this case the first
Although a short-circuit fault cannot be detected only by the current transformer and the first transformer, the difference current value between the rectifier output current and the return current increases, so that the secondary winding current of the second transformer is reduced.
A short circuit accident can be determined based on the rectified current value .
【００１３】[0013]
【実施例】以下、図面を参照しながら本考案の一実施例
を説明する。本考案では、トロリー線−レール間、フィ
ーダ線−レール間の短絡の場合に着霜防止電流の帰回路
が２回路に分割されることに着目し、差電流を検出する
ことにより３５０Ａよりも小さな事故電流でも検出可能
とした。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. In the present invention, attention is paid to the fact that the return circuit of the frost prevention current is divided into two circuits in the case of a short circuit between the trolley line and the rail and between the feeder line and the rail. Detectable even with fault current.
【００１４】図１において図３と同一部分は同一符号を
以て示している。図１において図３と異なる点は、ΔＩ
形故障選択装置２を除去し、整流器ＳＲの正極とトロリ
ー線Ｔを結ぶ電路に出力電流検出器、例えば変流器ＣＴ
１（第１の変流器）を介挿し、帰電流流路である電流調
整用抵抗Ｒと整流器ＳＲの負極を結ぶ電路に帰電流検出
器、例えば変流器ＣＴ２（第２の変流器）を介挿したこ
とにある。尚図中３は電気車、５０Ｆは短絡または地絡
選択継電器、８９Ｎ，８９ＮＦ，８９ＮＰは断路器、Ａ
は継電器である。In FIG. 1, the same parts as those in FIG. 3 are denoted by the same reference numerals. The difference between FIG. 1 and FIG.
The type fault selection device 2 is removed, and an output current detector, for example, a current transformer CT is connected to a circuit connecting the positive electrode of the rectifier SR and the trolley wire T.
1 (a first current transformer) , and a return current detector, for example, a current transformer CT2 (a second current transformer) is connected to a current path, which is a return current flow path, between the current adjustment resistor R and the negative electrode of the rectifier SR . ) . In the figure, 3 is an electric car, 50F is a short-circuit or ground fault selection relay, 89N, 89NF, 89NP are disconnectors, A
Is a relay.
【００１５】図１において、整流器ＳＲの出力電流は変
流器ＣＴ１、トロリー線Ｔおよびフィーダ線Ｆを通って
同一変電所に帰ってきて、電流調整用抵抗Ｒを通り整流
器ＳＲの負極側へ帰る。即ち正常電流としての流れはｉ
1→ｉ12→ｉ11→ｉ2→ｉ3となり、Ｉ1＝Ｉ12＝Ｉ11＝Ｉ
2＝Ｉ3である。変電所近傍のトロリー線−レール間短絡
は大電流（Ｉs1）が流れるため、ｉ1も大電流となり、
従来は変流器ＣＴ１で検出していた。変電所遠方のトロ
リー線−レール間短絡は故障電流（ＩS2）が小さいため
従来は検出不可であったが、本考案のように正常回路側
（例えば電流調整用抵抗Ｒの後ろ）に変流器ＣＴ２を設
けた場合、差電流はＩ1−Ｉ2＝ＩS2となり、正常の場合
のＩ1−Ｉ2＝０と比べてＩS2という大きさの差電流が発
生する。この差電流に着目して小さな故障電流も検出で
きる差電流検出装置を図２のように製作した。In FIG. 1, the output current of the rectifier SR returns to the same substation through the current transformer CT1, the trolley line T and the feeder line F, and returns to the negative side of the rectifier SR through the current adjusting resistor R. . That is, the flow as a normal current is i
1 → i 12 → i 11 → i 2 → i 3 , and I 1 = I 12 = I 11 = I
A 2 = I 3. Since a large current (I s1 ) flows in the trolley wire-rail short circuit near the substation, i 1 also has a large current,
Conventionally, the current was detected by the current transformer CT1. The short circuit between the trolley wire and the rail far from the substation could not be detected conventionally because the fault current (I S2 ) was small, but as in the present invention, the current was changed to the normal circuit side (for example, behind the current adjusting resistor R). When the device CT2 is provided, the difference current is I 1 −I 2 = I S2 , and a difference current of magnitude I S2 is generated as compared with I 1 −I 2 = 0 in the normal case. Focusing on this difference current, a difference current detection device capable of detecting a small fault current was manufactured as shown in FIG.
【００１６】図２において図１と同一部分は同一符号を
以て示している。１０はトランス１１、１２とその整流
回路および起動または閉路時延継電器２Ａからなる差電
流検出装置である。１３は図１におけるフィーダ線Ｆ、
トロリー線Ｔおよびレール１の抵抗分であり、１４は図
１におけるフィーダ線Ｆおよびトロリー線Ｔおよび電流
調整の抵抗分である。変流器ＣＴ１の二次巻線端子Ｋ
（二次巻線の他端）は端子Ｋ1を介してトランス１１
（第１のトランス）の一次巻線の一端に接続されてい
る。トランス１１の一次巻線の他端は、トランス１２
（第２のトランス）の第１の一次巻線を介して第２の一
次巻線の一端および制御電源端子Ｊ（交流の制御電源の
他方の出力端子）に接続されている。トランス１２の第
２の一次巻線の他端は、端子Ｌ2を介して変流器ＣＴ２
の二次巻線端子Ｌ（二次巻線の他端）に接続されてい
る。変流器ＣＴ２の二次巻線端子Ｋ（二次巻線の一端）
は端子Ｋ2を介して制御電源端子Ｉ（交流の制御電源の
一方の出力端子）に接続されるとともに、端子Ｋ2およ
びＬ1を介して変流器ＣＴ１の二次巻線端子Ｌ（二次巻
線の一端）に接続されている。In FIG. 2, the same parts as those in FIG. 1 are denoted by the same reference numerals. Reference numeral 10 denotes a differential current detecting device including the transformers 11 and 12, their rectifying circuits, and a relay device 2A for starting or closing. 13 is a feeder line F in FIG.
Reference numeral 14 denotes the resistance of the trolley wire T and the rail 1, and reference numeral 14 denotes the resistance of the feeder line F and the trolley wire T and the current adjustment in FIG. Secondary winding terminal K of current transformer CT1
(The other end of the secondary winding) transformer via the terminal K 1 11
The first transformer is connected to one end of a primary winding. The other end of the primary winding of the transformer 11
One end of the second primary winding via the first primary winding of the (second transformer) and the control power supply terminal J (of the AC control power supply)
(The other output terminal) . The other end of the second primary winding of the transformer 12, the terminal L 2 the current transformer via CT2
Is connected to the secondary winding terminal L (the other end of the secondary winding) . Secondary winding terminal K of current transformer CT2 (one end of secondary winding)
The control power of the control power supply terminal I (AC via the terminal K 2
Is connected to one output terminal), secondary winding terminals L (secondary winding of the current transformer CT1 via terminal K 2 and L 1
(One end of the wire) .
【００１７】トランス１１の二次巻線ＡＴ1には、変流
器ＣＴ１で検出された整流器ＳＲの出力電流（前記
ｉ1）に比例した電流が得られ、この電流は整流回路で
整流されて主回路電流値が求められた後リレー用出力と
される。トランス１２の二次巻線ＡＴTには、変流器Ｃ
Ｔ１とＣＴ２で検出された電流の差分（例えば前記
ｉS2）に比例した電流が得られ、この電流は整流回路で
整流されて差電流値が求められた後リレー用出力とされ
る。[0017] secondary winding AT 1 of the transformer 11 is proportional to the current is obtained at the output current of the rectifier SR detected by the current transformer CT1 (the i 1), this current is rectified by the rectifier circuit After the main circuit current value is obtained, it is used as a relay output. The secondary winding AT T of the transformer 12, current transformer C
A current proportional to the difference between the currents detected at T1 and CT2 (for example, i S2 ) is obtained, and this current is rectified by a rectifier circuit to obtain a difference current value, and then output as a relay output.
【００１８】上記のように構成された装置において、変
電所近傍のトロリー線Ｔ−レール１間で短絡事故が発生
すると、大きな短絡電流ｉS1が流れる。この事故電流ｉ
S1は変流器ＣＴ１により検出され、差電流検出装置１０
のリレー用出力（主回路電流値）は大きな値となる。こ
れによって図示しないリレーによって事故が判別され、
直流高速度遮断器５４Ｆをトリップさせる。In the device configured as described above, when a short circuit occurs between the trolley wire T and the rail 1 near the substation, a large short circuit current i S1 flows. This fault current i
S1 is detected by the current transformer CT1, and the difference current detection device 10
The relay output (main circuit current value) becomes a large value. With this, an accident is determined by a relay (not shown),
The DC high-speed circuit breaker 54F is tripped.
【００１９】また変電所から遠方のトロリー線Ｔ−レー
ル１間で短絡事故が発生した場合は、負荷電流より小さ
な故障電流ｉS2が流れる。この故障電流ｉS2は変流器Ｃ
Ｔ１とＣＴ２の出力の差で求められ、差電流検出装置１
０のリレー用出力（差電流値）は大きな値となる。これ
によって図示しないリレーによって事故が判別され、直
流高速度遮断器５４Ｆをトリップさせる。さらにトロリ
ー線Ｔ−フィーダ線Ｆ間で短絡事故が発生（例えばダイ
オード故障による）した場合は、ｉ1＝ｉ2＝ｉ4＞許容
値となるため変流器ＣＴ１によって事故検出でき、しか
もその検出電流の大きさによってどの位置のダイオード
が短絡したかも特定することができる。When a short circuit occurs between the trolley wire T and the rail 1 far from the substation, a fault current i S2 smaller than the load current flows. This fault current i S2 is the current transformer C
The difference current detection device 1 is obtained from the difference between the outputs of T1 and CT2.
A relay output (difference current value) of 0 has a large value. Thus, an accident is determined by a relay (not shown), and the DC high-speed circuit breaker 54F is tripped. Further, when a short circuit fault occurs between the trolley wire T and the feeder wire F (for example, due to a diode fault), i 1 = i 2 = i 4 > allowable value, so that the fault can be detected by the current transformer CT1, and furthermore, the detection thereof The position of the diode that has short-circuited can be specified by the magnitude of the current.
【００２０】[0020]
【考案の効果】以上のように本考案によれば、第１およ
び第２の変流器と、第１および第２のトランスとを設
け、前記第１のトランスの二次巻線電流を整流して得ら
れた整流器出力電流に基づく主回路電流値と、前記第２
のトランスの二次巻線電流を整流して得られた、整流器
出力電流と帰電流の差電流値とに基づいて短絡事故を判
別するように構成したので、着霜防止範囲が広がっても
各種短絡事故を検出し的確な保護が可能となった。すな
わち差電流検出保護により負荷電流より小さい故障電流
をも検出することが可能となり、また差電流に関係なく
大電流の保護検出も可能となった。[Effects of the Invention] As described above, according to the present invention, the first and second aspects are achieved.
And a second current transformer, and first and second transformers.
And rectifying the secondary winding current of the first transformer.
The main circuit current value based on the obtained rectifier output current;
Rectifier obtained by rectifying the secondary winding current of a transformer
Since the short-circuit accident is determined based on the difference current value between the output current and the return current, various short-circuit accidents are detected and accurate protection is possible even if the frost prevention range is widened. In other words, the differential current detection protection can detect a fault current smaller than the load current, and can detect the protection of a large current regardless of the difference current.
【図１】本考案の一実施例を示し、直流電鉄変電所全体
の構成図。FIG. 1 shows an embodiment of the present invention, and is a configuration diagram of an entire DC railway substation.
【図２】本考案の実施例の要部詳細を示す回路図。FIG. 2 is a circuit diagram showing details of a main part of the embodiment of the present invention.
【図３】従来の直流電鉄変電所の事故検出装置の構成
図。FIG. 3 is a configuration diagram of a conventional DC railway substation accident detection device.
【図４】図３の装置の要部等価回路図。FIG. 4 is an equivalent circuit diagram of a main part of the device of FIG. 3;
１…レール ３…電気車 １０…差電流検出装置 １１，１２…トランス ＣＴ１，ＣＴ２…変流器 ＳＲ…整流器 ５４Ｆ…直流高速度遮断器 Ｒ…電流調整抵抗 Ｆ…フィーダ Ｔ…トロリー線 DESCRIPTION OF SYMBOLS 1 ... Rail 3 ... Electric car 10 ... Difference current detection device 11, 12 ... Transformer CT1, CT2 ... Current transformer SR ... Rectifier 54F ... DC high-speed circuit breaker R ... Current adjustment resistance F ... Feeder T ... Trolley wire
Claims (1)
と、該整流器の正極に直流高速度遮断器を介して接続さ
れたトロリー線および該トロリー線に並設されたフィー
ダ線から成るき電線と、前記トロリー線およびフィーダ
線間に接続されたダイオードと、前記き電線と前記整流
器の負極を結ぶ電路に介挿された電流調整抵抗とを有し
た直流電鉄変電所において、 前記整流器の正極とき電線を結ぶ電路に介挿されるとと
もに、交流の制御電源の一方の出力端子が二次巻線の一
端に接続され、前記整流器の出力電流を検出する第１の
変流器と、 前記整流器の負極と前記電流調整抵抗を結ぶ電路に介挿
されるとともに、前記制御電源の一方の出力端子が二次
巻線の一端に接続され、帰電流を検出する第２の変流器
と、 一次巻線の一端が前記第１の変流器の二次巻線の他端に
接続された第１のトランスと、 一端が前記第１のトランスの一次巻線の他端に接続され
た第１の一次巻線と、該第１の一次巻線に併設され、一
端が、前記第１の一次巻線の他端に接続されるとともに
前記制御電源の他方の出力端子に接続され、且つ他端
が、前記第２の変流器の二次巻線の他端に接続された第
２の一次巻線とを有した第２のトランスとを備え、 前記第１のトランスの二次巻線電流を整流して得られた
整流器出力電流に基づく主回路電流値と、前記第２のト
ランスの二次巻線電流を整流して得られた、整流器出力
電流と帰電流の差電流値とに 基づいて短絡事故を判別す
ることを特徴とする直流電鉄変電所の事故検出装置。1. A rectifier for converting AC power to DC power, a feeder wire comprising a trolley wire connected to a positive electrode of the rectifier via a DC high-speed circuit breaker, and a feeder wire juxtaposed to the trolley wire. A direct current substation having a diode connected between the trolley wire and the feeder wire, and a current adjusting resistor inserted in an electric circuit connecting the feeder wire and the negative electrode of the rectifier; Once inserted and the path connecting the bets
One output terminal of the AC control power supply is connected to the secondary winding.
A first terminal connected to an end and detecting an output current of the rectifier.
A current transformer, and a current path connected between a negative electrode of the rectifier and the current adjusting resistor.
And one output terminal of the control power supply is
A second current transformer connected to one end of the winding and detecting a return current
And one end of the primary winding is connected to the other end of the secondary winding of the first current transformer.
A connected first transformer, one end of which is connected to the other end of the primary winding of the first transformer;
A first primary winding, and a first primary winding
An end is connected to the other end of the first primary winding;
The other end connected to the other output terminal of the control power supply
Is connected to the other end of the secondary winding of the second current transformer.
And a second transformer having two primary windings, and obtained by rectifying a secondary winding current of the first transformer.
A main circuit current value based on a rectifier output current;
Rectifier output obtained by rectifying the secondary winding current of the lance
An accident detection device for a DC railway substation, wherein a short circuit accident is determined based on a difference current value between a current and a return current .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1992039569U JP2607215Y2 (en) | 1992-06-10 | 1992-06-10 | Accident detection device for DC railway substation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1992039569U JP2607215Y2 (en) | 1992-06-10 | 1992-06-10 | Accident detection device for DC railway substation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0613348U JPH0613348U (en) | 1994-02-18 |
| JP2607215Y2 true JP2607215Y2 (en) | 2001-05-28 |
Family
ID=12556709
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1992039569U Expired - Fee Related JP2607215Y2 (en) | 1992-06-10 | 1992-06-10 | Accident detection device for DC railway substation |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2607215Y2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4881628A (en) * | 1972-02-02 | 1973-11-01 | ||
| JPS4926662U (en) * | 1972-06-09 | 1974-03-07 |
-
1992
- 1992-06-10 JP JP1992039569U patent/JP2607215Y2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0613348U (en) | 1994-02-18 |
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