JPH0214282Y2 - - Google Patents
Info
- Publication number
- JPH0214282Y2 JPH0214282Y2 JP1981102184U JP10218481U JPH0214282Y2 JP H0214282 Y2 JPH0214282 Y2 JP H0214282Y2 JP 1981102184 U JP1981102184 U JP 1981102184U JP 10218481 U JP10218481 U JP 10218481U JP H0214282 Y2 JPH0214282 Y2 JP H0214282Y2
- Authority
- JP
- Japan
- Prior art keywords
- relay
- ground fault
- output
- auxiliary
- bus bars
- 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
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- Mechanisms For Operating Contacts (AREA)
Description
【考案の詳細な説明】
この考案は直流回路の方向地絡継電装置に関す
る。[Detailed Description of the Invention] This invention relates to a directional ground fault relay device for a DC circuit.
従来、直流電源装置には回路における地絡を検
出するだけの地絡継電器しか設けられていなかつ
た。この継電器は直流回路母線の正極側Ｐ地絡あ
るいは負極側Ｎ地絡のどちらかの検出を行うだけ
であり、どの負荷への直流供給路に地絡が発生し
たかを検出できなかつた。従つて、上述のような
地絡が発生した場合にはどの供給路部分でそれが
発生したかを即座に検出しないと装置全体に悪影
響を与えるおそれがある。 Conventionally, DC power supplies have only been provided with a ground fault relay for detecting ground faults in the circuit. This relay only detects either a positive side P ground fault or a negative side N ground fault of the DC circuit bus bar, and cannot detect which load the DC supply line to which a ground fault has occurred has occurred. Therefore, if a ground fault as described above occurs, it may adversely affect the entire apparatus unless it is immediately detected in which part of the supply path the ground fault occurs.
この考案は上記の事情に鑑みてなされたもの
で、直流電力供給母線での地絡事故位置を簡単か
つ迅速に検出できる直流回路の方向地絡継電装置
を提供することを目的とする。 This invention was made in view of the above-mentioned circumstances, and an object thereof is to provide a directional ground fault relay device for a DC circuit that can easily and quickly detect the location of a ground fault fault on a DC power supply bus.
以下図面を参照してこの考案の一実施例を説明
する。 An embodiment of this invention will be described below with reference to the drawings.
第１図において、Ｐ，Ｎは直流主母線の正極母
線と負極母線で、この母線Ｐ，Ｎ間には地絡検出
用の第１リレーRy1を接続する。前記正、負極母
線Ｐ，Ｎには補助母線SB1，SB2…が複数本接続
され、その複数の補助母線SB1，SB2…には各別
に負荷LO1，LO2が接続される。前記補助母線
SB1，SB2…の途中には直流変流器DC−CT1，
DC−CT2…を配設する。変流器DC−CT1，DC
−CT2…の各出力は電流検出用の第２リレー
Ry2a，Ry2b…に入力される。この第２リレー
Ry2a，Ry2b…は補助母線SB1，SB2…に流れて
いる電流の地絡時の瞬時の変化を検出し、その検
出出力を前記第１リレーRy1に与えている。第１
リレーRy1は地絡を検出すると同時に第２リレー
Ry2a，Ry2b…のどれかの検出出力が入力される
と動作されるように構成されていて、その動作出
力は図示しない報知装置を作動させるようになつ
ている。なお、第２リレーRy2a，Ry2b…には
各々表示装置DP1，DP2…が接続されていて、ど
の補助母線SB1，SB2…に地絡事故が発生したか
を表示装置DP1，DP2…により確認できるように
なつている。 In FIG. 1, P and N are the positive and negative buses of the DC main bus, and a first relay Ry 1 for ground fault detection is connected between the buses P and N. A plurality of auxiliary buses SB 1 , SB 2 . . . are connected to the positive and negative electrode buses P, N, and loads LO 1 , LO 2 are respectively connected to the plurality of auxiliary buses SB 1 , SB 2 . Said auxiliary bus bar
In the middle of SB 1 , SB 2 ... there is a DC transformer DC-CT 1 ,
DC-CT 2 ... is installed. Current transformer DC−CT 1 , DC
- Each output of CT 2 ... is the second relay for current detection.
Input to Ry 2 a, Ry 2 b…. This second relay
Ry 2 a, Ry 2 b... detect an instantaneous change in the current flowing through the auxiliary buses SB 1 , SB 2 ... at the time of a ground fault, and provide the detected output to the first relay Ry 1 . 1st
Relay Ry 1 detects a ground fault and simultaneously switches on the second relay.
It is configured to be activated when the detection output of any one of Ry 2 a, Ry 2 b,... is input, and the operational output is configured to activate a notification device (not shown). In addition, display devices DP 1 , DP 2 ... are connected to the second relays Ry 2 a, Ry 2 b ..., respectively, and the display devices indicate which auxiliary bus SB 1 , SB 2 ... has experienced a ground fault. It can be confirmed by DP 1 , DP 2 ...
上記のように構成された実施例において、いま
補助母線SB1に地絡事故が発生したとする。する
と第１リレーRy1が動作するとともに直流変流器
DC−CT1が補助母線SB1を流れている電流変化
を検出し、その変化で第２リレーRy2aが動作し
て第１リレーRy1にその出力が供給される。第１
リレーRy1は第２リレーRy2aからの出力が入力さ
れると動作出力を送出し、地絡事故が発生したこ
とを報知する。この報知により第２リレーRy2a，
Ry2b…のうちどのリレーが動作したかを表示装
置DP1，DP2…から見出せば、即座にどの補助母
線SB1，SB2…であるかが識別できる。 In the embodiment configured as described above, it is assumed that a ground fault has now occurred on the auxiliary bus SB1 . Then, the first relay Ry 1 operates and the DC current transformer
The DC-CT 1 detects a change in the current flowing through the auxiliary bus SB 1 , and the change causes the second relay Ry 2 a to operate, and its output is supplied to the first relay Ry 1 . 1st
When the output from the second relay Ry 2 a is input, the relay Ry 1 sends out an operational output to notify that a ground fault has occurred. This notification causes the second relay Ry 2 a,
If it is found from the display devices DP 1 , DP 2 . . . which relay among Ry 2 b .
第２図は第１図における第１リレーRy1と第２
リレーRy2aとを一体化したリレーRya，Ryb…
を設けた場合の実施例であり、その動作は上記実
施例と同じである。 Figure 2 shows the first relay Ry 1 and the second relay in Figure 1.
Relays Rya and Ryb integrated with relay Ry 2 a...
This is an embodiment in which a controller is provided, and its operation is the same as the above embodiment.
以上述べたように、この考案によれば、地絡事
故を第１、第２リレーの二つのリレーで検出して
どの補助母線に地絡事故が発生したことを検知す
るようにしたので、極めて簡単に地絡事故が発生
した母線の識別ができる。これにより、他の補助
母線への停電の波及を抑えることが可能となる。 As mentioned above, according to this invention, a ground fault is detected by two relays, the first and second relays, and it is possible to detect which auxiliary bus bar a ground fault has occurred. You can easily identify the busbar where a ground fault has occurred. This makes it possible to suppress the spread of a power outage to other auxiliary buses.
第１図はこの考案の一実施例を示す回路図、第
２図はこの考案の他の実施例を示す回路図であ
る。
Ｐ，Ｎ……直流主母線の正、負極母線、SB1，
SB2……補助母線、Ry1……第１リレー、Ry2a，
Ry2b……第２リレー、DC−CT1，DC−CT2……
直流変流器、DP1，DP2……表示装置。
FIG. 1 is a circuit diagram showing one embodiment of this invention, and FIG. 2 is a circuit diagram showing another embodiment of this invention. P, N...Positive and negative pole bus of DC main bus, SB 1 ,
SB 2 ... Auxiliary bus bar, Ry 1 ... 1st relay, Ry 2 a,
Ry 2 b...Second relay, DC-CT 1 , DC-CT 2 ...
DC current transformer, DP 1 , DP 2 ...display device.
Claims (1)
接続された複数の負荷と、前記直流主母線間に接
続され、補助母線の地絡を検出する第１リレー
と、前記各々の補助母線の所定個所に設けられ、
その母線を流れる電流の変化を検出する直流変流
器と、この直流変流器に接続され、電流の変化が
ないときには動作しないで、それの変化があつた
ときのみ動作出力を送出し、その動作出力が第１
リレーに供給される第２リレー群と、この第２リ
レー群の各々に接続され、第２リレー群のうちど
れが動作したかを各別に表示する表示装置とを備
え、この第２リレーの出力が第１リレーに供給さ
れたときに地絡事故を報知する出力を送出するよ
うにしたことを特徴とする直流回路の方向地絡継
電装置。 A plurality of loads each connected to a DC main bus bar via a plurality of auxiliary bus bars, a first relay connected between the DC main bus bars to detect a ground fault of the auxiliary bus bar, and a predetermined location of each of the auxiliary bus bars. established in
There is a DC current transformer that detects changes in the current flowing through the bus. The operating output is the first
The output of the second relay includes a second relay group supplied to the relay, and a display device connected to each of the second relay groups and displaying which of the second relay groups is activated. 1. A directional ground fault relay device for a direct current circuit, characterized in that when the first relay is supplied with a signal, an output for notifying a ground fault is sent out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10218481U JPS589039U (en) | 1981-07-08 | 1981-07-08 | Directional ground fault relay device for DC circuits |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10218481U JPS589039U (en) | 1981-07-08 | 1981-07-08 | Directional ground fault relay device for DC circuits |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS589039U JPS589039U (en) | 1983-01-20 |
| JPH0214282Y2 true JPH0214282Y2 (en) | 1990-04-18 |
Family
ID=29896836
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10218481U Granted JPS589039U (en) | 1981-07-08 | 1981-07-08 | Directional ground fault relay device for DC circuits |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS589039U (en) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5412972B2 (en) * | 1973-08-24 | 1979-05-26 |
-
1981
- 1981-07-08 JP JP10218481U patent/JPS589039U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS589039U (en) | 1983-01-20 |
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