JP3329062B2 - Touch detection method for different frequency systems - Google Patents
Touch detection method for different frequency systemsInfo
- Publication number
- JP3329062B2 JP3329062B2 JP08081094A JP8081094A JP3329062B2 JP 3329062 B2 JP3329062 B2 JP 3329062B2 JP 08081094 A JP08081094 A JP 08081094A JP 8081094 A JP8081094 A JP 8081094A JP 3329062 B2 JP3329062 B2 JP 3329062B2
- Authority
- JP
- Japan
- Prior art keywords
- frequency
- current
- output
- different frequency
- touch
- 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 - Lifetime
Links
- 238000001514 detection method Methods 0.000 title claims description 9
- 238000010586 diagram Methods 0.000 description 5
- 102100026191 Class E basic helix-loop-helix protein 40 Human genes 0.000 description 4
- 101710130550 Class E basic helix-loop-helix protein 40 Proteins 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 102100026190 Class E basic helix-loop-helix protein 41 Human genes 0.000 description 2
- 101000765033 Homo sapiens Class E basic helix-loop-helix protein 41 Proteins 0.000 description 2
- 101100322249 Caenorhabditis elegans lev-1 gene Proteins 0.000 description 1
Landscapes
- Emergency Protection Circuit Devices (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Description
【０００１】[0001]
【産業上の利用分野】この発明は、電気鉄道などにおい
て、５０Ｈｚ饋電域と６０Ｈｚ饋電域が混在する区間で
の異周波数系統を切り替えて使用する異周波数系統の混
触検出方式に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cross-contact detection system for a different frequency system, which is used in an electric railway or the like by switching between different frequency systems in a section where a 50 Hz feed range and a 60 Hz feed range are mixed.
【０００２】[0002]
【従来の技術】５０Ｈｚ饋電域と６０Ｈｚ饋電域が混在
する電気鉄道において、５０Ｈｚと６０Ｈｚの饋電を切
り替えて使用する系統では、切り替え用に使用する切替
機の故障により５０Ｈｚと６０Ｈｚとが混触することが
ある。図５は電気鉄道において使用されている異周波数
系統の切替方式の概略構成説明図で、Ｌ１は５０Ｈｚ電
力系統、Ｌ２は６０Ｈｚ電力系統、ＴＦ１，ＴＦ２は変
圧器、ＣＢ１，ＣＢ２は遮断器、ＣＴ１，ＣＴ２は変流
器、変流器ＣＴ１，ＣＴ２には過電流継電器５１が設け
られている。ＳＷ１，ＳＷ２は異周波数系統切り替え器
として使用される真空スイッチ、ＤＤＳ１，ＤＤＳ２は
饋電線に設けられたデットセクション、ＥＣは電気車で
ある。2. Description of the Related Art In an electric railway in which a 50 Hz and a 60 Hz feed range are mixed, in a system in which a 50 Hz and a 60 Hz feeder are switched and used, the 50 Hz and the 60 Hz are changed due to a failure of a switching device used for the switching. May touch. FIG. 5 is a schematic configuration explanatory view of a switching system for different frequency systems used in electric railways, where L1 is a 50 Hz power system, L2 is a 60 Hz power system, TF1 and TF2 are transformers, CB1 and CB2 are circuit breakers, and CT1 , CT2 are provided with current transformers, and the current transformers CT1, CT2 are provided with overcurrent relays 51. SW1 and SW2 are vacuum switches used as different frequency system switching devices, DDS1 and DDS2 are dead sections provided on feeders, and EC is an electric car.
【０００３】図５のように構成された異周波数系統切替
方式においては、上述のように切り替え器として機械的
インターロック機構付きの真空スイッチＳＷ１，ＳＷ２
が用いられる。この真空スイッチＳＷ１，ＳＷ２は使用
中に極間の耐圧不良などで極間が溶着してしまうと、両
系統が混触してしまう。In the different frequency system switching system configured as shown in FIG. 5, the vacuum switches SW1 and SW2 with the mechanical interlock mechanism are used as the switching devices as described above.
Is used. If the gaps of the vacuum switches SW1 and SW2 are welded due to poor pressure resistance between the poles during use, the two systems will come into contact with each other.
【０００４】[0004]
【発明が解決しようとする課題】上記異周波数系統切替
方式において、両系統の混触が生じた場合、過電流継電
器５１が動作して混触を検出する手段を採っているけれ
ども、この過電流継電器５１による検出では、負荷側で
ある電気車ＥＣでの短絡による動作か、混触による動作
かの判別ができない問題がある。In the above different frequency system switching method, when a contact between the two systems occurs, the overcurrent relay 51 operates to detect the contact. However, there is a problem that it is not possible to determine whether the operation is due to a short circuit or an operation due to touch at the electric vehicle EC on the load side.
【０００５】この発明は上記の事情に鑑みてなされたも
ので、５０Ｈｚ饋電域と６０Ｈｚ饋電域が混在する区間
での異周波数系統の混触事故を検出して事故内容の判別
を容易にした異周波数系統の混触検出方式を提供するこ
とを目的とする。The present invention has been made in view of the above circumstances, and has made it possible to detect a contact accident of a different frequency system in a section in which a 50 Hz feeder region and a 60 Hz feeder region coexist and to easily determine the contents of the accident. It is an object of the present invention to provide a touch detection method for different frequency systems.
【０００６】[0006]
【課題を解決するための手段および作用】この発明は、
上記の目的を達成するために、５０Ｈｚ饋電域と６０Ｈ
ｚ饋電域が混在する区間での異周波数系統を切り替えて
使用するシステムにおいて、電力系統から饋電線域に供
給される電流あるいは電圧の周波数が供給される中心周
波数が５０Ｈｚ、６０Ｈｚの第１、第２のバンドパスフ
ィルタおよび５０Ｈｚから６０Ｈｚの間の中心周波数が
５５Ｈｚに設定された第３のバンドパスフィルタを設
け、この第３のバンドパスフィルタの出力と第１のバン
ドパスフィルタの出力および第３のバンドパスフィルタ
の出力と第２のバンドパスフィルタの出力をそれぞれ別
々に加算し、両加算出力が生じたとき混触であると判定
することを特徴とするものである。SUMMARY OF THE INVENTION The present invention provides
To achieve the above objectives, a 50Hz feedback range and 60H
In a system in which different frequency systems are switched and used in a section where a z-feeder region is mixed, a center line around which the frequency of the current or voltage supplied from the power system to the feeder region is supplied.
First and second bandpass filters having wave numbers of 50 Hz and 60 Hz
Filter and the center frequency between 50Hz and 60Hz
A third bandpass filter set at 55 Hz
The output of the third band-pass filter and the first band
Output of the pass filter and a third band pass filter
And the output of the second bandpass filter are separate
Each of them is added to each other, and when both addition outputs are generated, it is determined that a touch occurs .
【０００７】[0007]
【０００８】[0008]
【０００９】[0009]
【実施例】以下この発明の一実施例を図面に基づいて説
明する。図１はこの発明の第１実施例の要部を示すもの
で、ｃｏｓ分を周波数により検出する方式の構成説明図
であり、図５と同一部分には同一符号を付して示す。図
１において、変流器ＣＴ１で検出した電流は第１、第２
の混触電流判別部ＤＥＣ１，ＤＥＣ２に入力される。第
１の混触電流判別部ＤＥＣ１は、混触時の入力周波数
（ｃｏｓ分）をｆ1＝５３Ｈｚとしたとき、混触したと
きの電流をＩｆとすると、Ｉｆ≧５３Ｈｚのときに出力
を送出するものである。また、第２の混触電流判別部Ｄ
ＥＣ２は、混触時の入力周波数（ｃｏｓ分）をｆ2＝５
７Ｈｚとしたとき、混触したときの電流をＩｆとする
と、Ｉｆ≦５７Ｈｚのときに出力を送出するものであ
る。なお、前記混触したときの電流Ｉｆは次の式から算
出される。An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows a main part of a first embodiment of the present invention, and is an explanatory view of a configuration of a system for detecting a cos component by a frequency, and the same parts as those in FIG. In FIG. 1, the currents detected by the current transformer CT1 are first and second currents.
Is input to the touch current determination units DEC1 and DEC2. The first touch current discriminating unit DEC1 sends an output when If ≧ 53 Hz, if the input frequency (cos component) at the time of touch is f 1 = 53 Hz and the current at the time of touch is If, is there. Also, the second touch current determining unit D
EC2 indicates that the input frequency (for cos) at the time of touch is f 2 = 5.
When the current is 7 Hz and the current at the time of touch is If, the output is transmitted when If ≦ 57 Hz. The current If at the time of the contact is calculated from the following equation.
【００１０】[0010]
【数１】 (Equation 1)
【００１１】第１、第２の混触電流判別部ＤＥＣ１，Ｄ
ＥＣ２の出力はアンド回路ＡＮＤに与えられる。アンド
回路ＡＮＤは、Ｉｆが５３Ｈｚ以上で、かつ５７Ｈｚ以
下のときに動作して出力が送出され、この出力、すなわ
ち混触があったと判断されて何れか一方（５０Ｈｚまた
は６０Ｈｚ）側からの延長饋電により引き続き運用され
るように真空スイッチＳＷ１，ＳＷ２の開放を制御す
る。図２は混触時の入力周波数（ｃｏｓ分）（図中斜線
で示す領域）を示すものである。上記第１実施例は電流
の周波数が変化したことを周波数で判定するものであ
る。First and second contact current discriminating units DEC1, D
The output of EC2 is provided to AND circuit AND. The AND circuit AND operates and outputs an output when If is equal to or higher than 53 Hz and equal to or lower than 57 Hz. It is determined that there is a touch, and an extended feed from one (50 Hz or 60 Hz) side is determined. controlling the opening of the vacuum switches SW1, SW2 as operated continue by. FIG. 2 shows the input frequency (for cos) at the time of touch (the area indicated by oblique lines in the figure). In the first embodiment, the fact that the frequency of the current has changed is determined based on the frequency.
【００１２】図３はこの発明の第２実施例の要部を示す
もので、ｃｏｓ分の５５Ｈｚ成分を検出する方式の構成
説明図であり、変流器ＣＴ１で検出した電流は、中心周
波数が５０Ｈｚの第１のバンドパスフィルタＢＰＦ１、
同じく中心周波数が６０Ｈｚの第２のバンドパスフィル
タＢＰＦ２および中心周波数が５５Ｈｚの第３のバンド
パスフィルタＢＰＦ３に入力される。第１のバンドパス
フィルタＢＰＦ１の出力は第１加算器ＡＤ１のマイナス
入力端に供給され、プラス入力端には第３のバンドパス
フィルタＢＰＦ３の出力が供給される。また、第２のバ
ンドパスフィルタＢＰＦ２の出力は第２加算器ＡＤ２の
マイナス端に供給され、プラス端には第３のバンドパス
フィルタＢＰＦ３の出力が供給される。第１、第２加算
器ＡＤ１，ＡＤ２の出力は第１、第２レベル検出器ＬＥ
Ｖ１，ＬＥＶ２の入力され、その出力はアンド回路ＡＮ
Ｄに供給される。FIG. 3 shows a main part of a second embodiment of the present invention, and is an explanatory view of a configuration of a system for detecting a 55 Hz component of cos. The current detected by the current transformer CT1 has a center frequency. 50 Hz first bandpass filter BPF1,
Similarly, it is input to a second bandpass filter BPF2 having a center frequency of 60 Hz and a third bandpass filter BPF3 having a center frequency of 55 Hz. The output of the first bandpass filter BPF1 is supplied to the minus input terminal of the first adder AD1, and the output of the third bandpass filter BPF3 is supplied to the plus input terminal. The output of the second bandpass filter BPF2 is supplied to the minus end of the second adder AD2, and the output of the third bandpass filter BPF3 is supplied to the plus end. The outputs of the first and second adders AD1 and AD2 are the first and second level detectors LE.
V1 and LEV2 are input, and the output thereof is an AND circuit AN
D.
【００１３】図３の第２実施例では混触時の入力周波数
（ｃｏｓ分）は入力電流の周波数が変化したことを各フ
ィルタの加算出力により検出する。なお、混触した時の
電流Ｉｆは前述した式により求める。In the second embodiment shown in FIG. 3, the input frequency (cos) at the time of touch is detected by the addition output of each filter when the frequency of the input current has changed. The current If at the time of touching is obtained by the above-described equation.
【００１４】図４はこの発明の第３実施例の要部を示す
もので、ｓｉｎ分をレベル検出により求め、ｃｏｓ分を
周波数検出により求めてそのアンドを採る方式の構成説
明図であり、第１実施例のものにレベル検出部ＬＥＶを
設け、その出力をアンド回路ＡＮＤに供給したものであ
る。この第３実施例は入力電流の周波数が変化したこと
を、周波数検出で判別し、かつ入力電流が過電流になっ
たことにより判別するものである。この第３実施例にお
いても、混触した時の電流Ｉｆは前述した式により求め
る。FIG. 4 shows a main part of a third embodiment of the present invention. FIG. 4 is an explanatory diagram showing a configuration of a system for obtaining a sine component by level detection, obtaining a cos component by frequency detection, and taking an AND thereof. In this embodiment, a level detector LEV is provided in the embodiment, and the output is supplied to an AND circuit AND. In the third embodiment, a change in the frequency of the input current is determined by frequency detection, and a determination is made based on the fact that the input current has become overcurrent. Also in the third embodiment, the current If at the time of touch is obtained by the above-described equation.
【００１５】上記各実施例では電流の例で説明して来た
が、電圧の場合においても同じである。また、上記実施
例では変流器ＣＴ１側だけについて述べて来たが、ＣＴ
２側の場合も同様に構成されている。Although the above embodiments have been described with reference to the example of the current, the same applies to the case of the voltage. In the above embodiment, only the current transformer CT1 has been described.
The configuration on the two sides is the same.
【００１６】[0016]
【発明の効果】以上述べたように、この発明によれば、
短絡事故では動作せず、混触事故時のみ検出するように
したため、事故内容の判別が容易となる利点がある。As described above, according to the present invention,
Since it does not operate in the event of a short-circuit accident and detects only in the event of a contact accident, there is an advantage that the content of the accident can be easily determined.
【図１】この発明の第１実施例の要部を示すもので、ｃ
ｏｓ分を周波数により検出する方式の構成説明図。FIG. 1 shows a main part of a first embodiment of the present invention;
FIG. 3 is a configuration explanatory diagram of a method of detecting an os component by frequency.
【図２】混触時の入力周波数を説明する図。FIG. 2 is a diagram illustrating an input frequency at the time of touch.
【図３】この発明の第２実施例の要部を示すもので、ｃ
ｏｓ分の５５Ｈｚ成分を検出する方式の構成説明図。FIG. 3 shows a main part of a second embodiment of the present invention;
FIG. 4 is a configuration explanatory diagram of a method of detecting a 55 Hz component for os.
【図４】この発明の第３実施例の要部を示すもので、ｓ
ｉｎ分をレベル検出により求め、ｃｏｓ分を周波数検出
により求めてそのアンドを採る方式の構成説明図。FIG. 4 shows a main part of a third embodiment of the present invention;
FIG. 4 is a configuration explanatory diagram of a method of obtaining an in component by level detection, obtaining a cos component by frequency detection, and taking an AND thereof.
【図５】電気鉄道において使用されている異周波数系統
の切替方式の概略構成説明図。FIG. 5 is a schematic configuration explanatory view of a switching system of a different frequency system used in an electric railway.
ＣＴ１，ＣＴ２…変流器 ＳＷ１，ＳＷ２…真空スイッチ ＤＥＣ１，ＤＥＣ２…第１、第２の混触電流判別部 ＡＮＤ…アンド回路 ＢＰＦ１〜ＢＰＦ３…第１〜第３のバンドパスフィルタ ＡＤ１，ＡＤ２…第１、第２加算器 ＬＥＶ１，ＬＥＶ２…第１、第２レベル検出器 CT1, CT2 Current transformer SW1, SW2 Vacuum switch DEC1, DEC2 First and second contact current determining units AND AND circuit BPF1 to BPF3 First to third bandpass filters AD1, AD2 First , A second adder LEV1, LEV2... First and second level detectors
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 平１−269068（ＪＰ，Ａ) 特開 平７−170608（ＪＰ，Ａ) 特開 平７−212960（ＪＰ，Ａ) 特開 昭63−93640（ＪＰ，Ａ) 特開 昭63−31837（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) H02H 3/46 - 3/50 B60M 3/00 - 3/04 ────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-1-269068 (JP, A) JP-A-7-170608 (JP, A) JP-A-7-212960 (JP, A) JP-A-63-1988 93640 (JP, A) JP-A-63-31837 (JP, A) (58) Fields investigated (Int. Cl. 7 , DB name) H02H 3/46-3/50 B60M 3/00-3/04
Claims (1)
する区間での異周波数系統を切り替えて使用するシステ
ムにおいて、電力系統から饋電線域に供給される電流あ
るいは電圧の周波数が供給される中心周波数が５０Ｈ
ｚ、６０Ｈｚの第１、第２のバンドパスフィルタおよび
５０Ｈｚから６０Ｈｚの間の中心周波数が５５Ｈｚに設
定された第３のバンドパスフィルタを設け、この第３の
バンドパスフィルタの出力と第１のバンドパスフィルタ
の出力および第３のバンドパスフィルタの出力と第２の
バンドパスフィルタの出力をそれぞれ別々に加算し、両
加算出力が生じたとき混触であると判定することを特徴
とする異周波数系統の混触検出方式。1. A 50Hz feeder area and system 60Hz feeder zone is used by switching different-frequency system of the interval to be mixed, the frequency of the current or voltage supplied from the power system to the feeder line area supplied Center frequency is 50H
z, 60 Hz first and second bandpass filters;
The center frequency between 50 Hz and 60 Hz is set to 55 Hz.
A third band-pass filter is provided.
Output of bandpass filter and first bandpass filter
And the output of the third band-pass filter and the second
The outputs of the bandpass filters are added separately,
A cross-contact detection method of a different frequency system, wherein it is determined that a cross-contact occurs when an addition output occurs .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP08081094A JP3329062B2 (en) | 1994-04-20 | 1994-04-20 | Touch detection method for different frequency systems |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP08081094A JP3329062B2 (en) | 1994-04-20 | 1994-04-20 | Touch detection method for different frequency systems |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07298479A JPH07298479A (en) | 1995-11-10 |
| JP3329062B2 true JP3329062B2 (en) | 2002-09-30 |
Family
ID=13728832
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP08081094A Expired - Lifetime JP3329062B2 (en) | 1994-04-20 | 1994-04-20 | Touch detection method for different frequency systems |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3329062B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5484248B2 (en) * | 2010-08-04 | 2014-05-07 | 三菱電機株式会社 | Cross frequency detection device |
-
1994
- 1994-04-20 JP JP08081094A patent/JP3329062B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07298479A (en) | 1995-11-10 |
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