JPH0439085U - - Google Patents
Info
- Publication number
- JPH0439085U JPH0439085U JP1990079250U JP7925090U JPH0439085U JP H0439085 U JPH0439085 U JP H0439085U JP 1990079250 U JP1990079250 U JP 1990079250U JP 7925090 U JP7925090 U JP 7925090U JP H0439085 U JPH0439085 U JP H0439085U
- Authority
- JP
- Japan
- Prior art keywords
- thyristor valve
- circuit
- voltage
- energized
- gate
- 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.)
- Pending
Links
- 238000012544 monitoring process Methods 0.000 claims description 4
- 239000003990 capacitor Substances 0.000 claims description 2
- 230000005856 abnormality Effects 0.000 claims 4
- 238000001514 detection method Methods 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Power Conversion In General (AREA)
Description
第１図は本考案の一実施例を示すブロツク図、
第２図は従来装置のブロツク図、第３図は従来装
置の動作を説明するための動作波形図である。
１……交流系統、２……しや断器、３……コン
デンサ、４Ｕ，４Ｘ……サイリスタバルブ、５Ｕ
，５Ｘ……電圧検出器、８Ｕ，８Ｘ……電圧信号
監視回路、９……オア回路、１２Ｕ，１２Ｘ……
フリツプフロツプ、１３Ｕ，１３Ｘ……第１のア
ンド回路、１５……第２のアンド回路。
FIG. 1 is a block diagram showing an embodiment of the present invention.
FIG. 2 is a block diagram of the conventional device, and FIG. 3 is an operational waveform diagram for explaining the operation of the conventional device. 1... AC system, 2... Line breaker, 3... Capacitor, 4U, 4X... Thyristor valve, 5U
, 5X... Voltage detector, 8U, 8X... Voltage signal monitoring circuit, 9... OR circuit, 12U, 12X...
Flip-flop, 13U, 13X...first AND circuit, 15...second AND circuit.
Claims (1)
ンサに直列接続される逆並列接続のサイリスタバ
ルブの順電圧及び逆電圧からサイリスタバルブの
異常を検出するサイリスタバルブの異常検出装置
において、 前記サイリスタバルブの順電圧及び逆電圧を個
別に監視するそれぞれの電圧信号監視回路と、 前記しや断器が投入されている条件で且つ前記
サイリスタバルブへのゲート信号をブロツクした
際に、ゲートブロツク直前に通電していた前記サ
イリスタバルブの通電相を判別する回路と、 該回路の出力信号を前記電圧信号監視回路に印
加し、ゲートブロツク直後、ゲートブロツク直前
の非通電相の前記電圧信号監視回路でサイリスタ
バルブの異常を監視するようにしたことを特徴と
するサイリスタバルブの異常検出装置。[Claim for Utility Model Registration] A thyristor valve that detects an abnormality in the thyristor valve from the forward voltage and reverse voltage of the thyristor valve connected in anti-parallel connection in series to a capacitor connected to an AC system via a circuit breaker. The abnormality detection device includes respective voltage signal monitoring circuits that individually monitor the forward voltage and reverse voltage of the thyristor valve, and a gate signal to the thyristor valve under the condition that the breaker is closed and the gate signal to the thyristor valve is blocked. At this time, a circuit is provided to determine the energized phase of the thyristor valve that was energized immediately before the gate block, and an output signal from this circuit is applied to the voltage signal monitoring circuit to determine the energized phase of the thyristor valve that was energized immediately before the gate block. A thyristor valve abnormality detection device, characterized in that the voltage signal monitoring circuit monitors abnormalities in the thyristor valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990079250U JPH0439085U (en) | 1990-07-27 | 1990-07-27 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990079250U JPH0439085U (en) | 1990-07-27 | 1990-07-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0439085U true JPH0439085U (en) | 1992-04-02 |
Family
ID=31623243
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1990079250U Pending JPH0439085U (en) | 1990-07-27 | 1990-07-27 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0439085U (en) |
-
1990
- 1990-07-27 JP JP1990079250U patent/JPH0439085U/ja active Pending
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