JP2806163B2 - Static switch - Google Patents
Static switchInfo
- Publication number
- JP2806163B2 JP2806163B2 JP4219257A JP21925792A JP2806163B2 JP 2806163 B2 JP2806163 B2 JP 2806163B2 JP 4219257 A JP4219257 A JP 4219257A JP 21925792 A JP21925792 A JP 21925792A JP 2806163 B2 JP2806163 B2 JP 2806163B2
- Authority
- JP
- Japan
- Prior art keywords
- switch
- zinc oxide
- thyristor
- arrester
- voltage
- 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
Landscapes
- Emergency Protection Circuit Devices (AREA)
- Protection Of Static Devices (AREA)
Description
【０００１】[0001]
【産業上の利用分野】この発明は、例えば配電系統に使
用されている区分開閉器等として用いられる静止形開閉
器に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a static switch used as, for example, a segment switch used in a distribution system.
【０００２】[0002]
【従来の技術】図３は例えば平成元年電気学会全国大会
講演論文集〔１０〕（電力保護１０−１０６／１０７）
に開示されたこの種の従来のサイリスタ開閉器を示す回
路構成図である。図において、１はサイリスタ素子を逆
並列接続してなるサイリスタスイッチ、２は機械式開閉
器としての真空電磁接触器、３はサイリスタ素子をサー
ジ電圧から保護する酸化亜鉛形避雷器、４はサイリスタ
スイッチ１および真空電磁接触器２を低電圧レベルから
操作する制御装置である。そして、サイリスタスイッチ
１および真空電磁接触器２は各相毎に相互に直列に接続
され、電源側の入力端子Ｕ１，Ｖ１，Ｗ１と負荷側の出
力端子Ｕ２，Ｖ２，Ｗ２の間に接続されている。2. Description of the Related Art FIG. 3 is, for example, a collection of papers of the 1989 National Convention of the Institute of Electrical Engineers of Japan [10] (power protection 10-106 / 107).
1 is a circuit configuration diagram showing a conventional thyristor switch of this type disclosed in FIG. In the figure, 1 is a thyristor switch in which thyristor elements are connected in anti-parallel, 2 is a vacuum electromagnetic contactor as a mechanical switch, 3 is a zinc oxide surge arrester that protects the thyristor element from surge voltage, 4 is a thyristor switch 1 And a control device for operating the vacuum electromagnetic contactor 2 from a low voltage level. The thyristor switch 1 and the vacuum electromagnetic contactor 2 are connected in series with each other for each phase, and are connected between the input terminals U1, V1, W1 on the power supply side and the output terminals U2, V2, W2 on the load side. I have.
【０００３】次ぎに上記回路の動作について説明する。
サイリスタスイッチ１と真空電磁接触器２とは制御装置
４によって操作されるが、同装置には電気的インターロ
ックが構成されており、サイリスタスイッチ１は真空電
磁接触器２が投入された状態でのみオンし、また、真空
電磁接触器２はサイリスタスイッチ１がオフの状態での
み開放可能となっている。Next, the operation of the above circuit will be described.
The thyristor switch 1 and the vacuum electromagnetic contactor 2 are operated by a control device 4, which is provided with an electric interlock. The thyristor switch 1 is operated only when the vacuum electromagnetic contactor 2 is turned on. It turns on, and the vacuum electromagnetic contactor 2 can be opened only when the thyristor switch 1 is off.
【０００４】従ってサイリスタスイッチ１がオフの状態
で真空電磁接触器２が投入された状態ではサイリスタス
イッチ１に回路の相電圧に相当する電圧（例えば回路電
圧が６．６ｋＶの時は６．６ｋＶ／√３＝３．８１ｋ
Ｖ）が印加されている。また、サイリスタスイッチ１の
オフした瞬時には過渡的に線間電圧（例えば回路電圧が
６．６ｋＶの時には６．６ｋＶ）以上の電圧が印加され
る。Therefore, when the vacuum electromagnetic contactor 2 is turned on while the thyristor switch 1 is off, a voltage corresponding to the phase voltage of the circuit (for example, 6.6 kV / when the circuit voltage is 6.6 kV) is applied to the thyristor switch 1. √3 = 3.81k
V) is applied. At the moment when the thyristor switch 1 is turned off, a voltage higher than the line voltage (for example, 6.6 kV when the circuit voltage is 6.6 kV) is applied transiently.
【０００５】このため、該サイリスタスイッチ１に使用
するサイリスタ素子の電圧定格はこれらの現象を考慮
し、回路電圧６．６ｋＶの時には９．３３ｋＶP （＝√
２×６．６ｋＶ）以上の電圧定格を有するものを使用す
る必要がある。また、サイリスタ素子を過電圧より保護
するため酸化亜鉛形避雷器３の制限電圧は１０．０ｋＶ
P 以下にしてサイリスタ素子の電圧定格を過大なものと
しないように協調をとっている。Therefore, the voltage rating of the thyristor element used in the thyristor switch 1 is determined in consideration of these phenomena. When the circuit voltage is 6.6 kV, the voltage rating is 9.33 kV P (= √).
It is necessary to use one having a voltage rating of 2 × 6.6 kV or more. In order to protect the thyristor element from overvoltage, the limiting voltage of the zinc oxide arrester 3 is 10.0 kV.
Cooperation is made so that the voltage rating of the thyristor element is not excessively increased below P.
【０００６】[0006]
【発明が解決しようとする課題】従来のサイリスタ開閉
器は以上のように構成されているので、酸化亜鉛形避雷
器３が三相中一相分故障（短絡故障）すると他の二相の
酸化亜鉛形避雷器３には線間電圧が印加され、酸化亜鉛
形避雷器３が漏れ電流過大となり、制限電圧×漏れ電流
×時間＝エネルギー耐量で表わされるところのエネルギ
ー耐量超過で短絡故障し、サイリスタスイッチがオンし
ていないのに酸化亜鉛形避雷器３により負荷へ電流を供
給するオン状態となり、酸化亜鉛形避雷器３がその通電
損失により破損するなどの問題点があった。Since the conventional thyristor switch is constructed as described above, if the zinc oxide surge arrester 3 fails for one phase out of three phases (short-circuit fault), the other two phases of zinc oxide will fail. A line voltage is applied to the lightning arrester 3, and the zinc oxide lightning arrester 3 has an excessive leakage current, and a short-circuit fault occurs due to an excess of the energy withstand voltage represented by a limit voltage × leakage current × time = energy withstand voltage, and the thyristor switch is turned on. Even though the surge arrester 3 has not been turned on, the current is supplied to the load by the zinc oxide arrester 3, and there is a problem that the zinc oxide arrester 3 is damaged due to the loss of electricity.
【０００７】この発明は上記のような課題を解決するた
めになされたものであり、酸化亜鉛形避雷器３が故障し
た時に瞬時にそれを検出し、サイリスタスイッチ１に直
列接続された真空電磁接触器２を開放し、健全な相の酸
化亜鉛形避雷器３を保護すると共に負荷への誤った給電
を防止することができる静止形開閉器の提供を目的とし
ている。SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problem. When a zinc oxide surge arrester 3 fails, it instantaneously detects the failure, and a vacuum electromagnetic contactor connected in series to the thyristor switch 1 is provided. The present invention aims to provide a static switch capable of opening a surge protector 2 and protecting a zinc oxide surge arrester 3 of a sound phase and preventing erroneous power supply to a load.
【０００８】[0008]
【課題を解決するための手段】この発明に係る静止形開
閉器は、サイリスタスイッチに並列接続される酸化亜鉛
形避雷器に故障検出要素を具備させたものである。A static switch according to the present invention comprises a zinc oxide surge arrester connected in parallel with a thyristor switch, provided with a failure detecting element.
【０００９】[0009]
【作用】この発明における静止形開閉器は、サイリスタ
スイッチに並列接続される酸化亜鉛形避雷器に故障検出
要素を具備させたので、三相中一相の酸化亜鉛形避雷器
が短絡故障したことを瞬時に検出し、サイリスタスイッ
チと直列接続された真空電磁接触器を開放し他の二相の
酸化亜鉛形避雷器の損傷を防止する。In the static switch according to the present invention, the zinc oxide surge arrester connected in parallel with the thyristor switch is provided with a failure detecting element. , And opens the vacuum electromagnetic contactor connected in series with the thyristor switch to prevent damage to other two-phase zinc oxide arresters.
【００１０】[0010]
【実施例】実施例１．以下、この発明の実施例１を図に
基づいて説明する。なお、従来の技術のところで説明し
たものと同一部分には同一符号を付す。[Embodiment 1] Hereinafter, a first embodiment of the present invention will be described with reference to the drawings. The same parts as those described in the related art are denoted by the same reference numerals.
【００１１】図１において、５は酸化亜鉛形避雷器３に
直列接続された溶断検出を光信号で低電位に光伝送する
機能をもったヒューズ、６は光ファイバを示す。In FIG. 1, reference numeral 5 denotes a fuse connected in series to the zinc oxide surge arrester 3 and having a function of optically transmitting the fusing detection to a low potential by an optical signal, and 6 an optical fiber.
【００１２】次ぎに動作について説明する。三相中一相
の酸化亜鉛形避雷器３が短絡故障した瞬時、他の二相の
酸化亜鉛形避雷器３には線間電圧が印加され漏れ電流が
流れる。この漏れ電流が過大になりヒューズ５が溶断
し、ヒューズ５溶断検出信号は光ファイバー６で制御装
置４に光伝送され、サイリスタスイッチ１と直列接続さ
れた真空電磁接触器２を開放する。これにより、健全な
酸化亜鉛形避雷器３の損傷を防止すると共に負荷側への
誤った通電を防止する。尚、該ヒューズ５は酸化亜鉛形
避雷器３のエネルギー耐量内で溶断するよう保護協調を
とったものである。Next, the operation will be described. At the moment when one of the three phases of the zinc oxide arrester 3 is short-circuited, a line voltage is applied to the other two-phase zinc arrester 3 and a leakage current flows. This leakage current becomes excessive and the fuse 5 is blown, and the fuse 5 blowout detection signal is optically transmitted to the control device 4 via the optical fiber 6, and the vacuum electromagnetic contactor 2 connected in series with the thyristor switch 1 is opened. This prevents damage to the sound zinc oxide arrester 3 and prevents erroneous energization to the load side. Note that the fuse 5 is protected and cooperative so as to blow within the energy withstand capability of the zinc oxide surge arrester 3.
【００１３】実施例２．また、上記実施例では酸化亜鉛
形避雷器３の故障検出用として、ヒューズ５を使用した
場合について説明したが、図２に示すように光ＣＴ７を
用いて酸化亜鉛形避雷器３に流れる電流を検出し、この
電流値が過大になったら瞬時にサイリスタスイッチ１と
直列接続された真空電磁接触器２を開放することによ
り、上記実施例と同様の効果を奏するようにした。Embodiment 2 FIG. Further, in the above embodiment, the case where the fuse 5 is used for detecting the failure of the zinc oxide arrester 3 has been described, but the current flowing through the zinc oxide arrester 3 is detected by using the optical CT 7 as shown in FIG. When the current value becomes excessive, the vacuum electromagnetic contactor 2 connected in series with the thyristor switch 1 is instantaneously opened, so that the same effect as in the above embodiment can be obtained.
【００１４】[0014]
【発明の効果】以上説明したのように、この発明による
静止形開閉器によればサイリスタ素子を過電圧より保護
するため、該素子に並列接続された酸化亜鉛形避雷器に
故障検出手段を具備したので、三相中一相の酸化亜鉛形
避雷器が損傷した場合においても、他の二相の健全な酸
化亜鉛形避雷器を保護すると共に、酸化亜鉛形避雷器の
損傷に起因する負荷への誤った給電を防止することがで
きる。As described above, according to the static switch according to the present invention, in order to protect the thyristor element from overvoltage, the zinc oxide surge arrester connected in parallel with the thyristor element is provided with the fault detecting means. In the event that one of the three phases of the zinc oxide surge arrester is damaged, the other two-phase zinc oxide surge arrester is protected and the incorrect supply of power to the load due to the damage of the zinc oxide surge arrester is prevented. Can be prevented.
【図１】この発明の実施例１の回路構成を示す。FIG. 1 shows a circuit configuration of a first embodiment of the present invention.
【図２】この発明の実施例２の回路構成を示す。FIG. 2 shows a circuit configuration according to a second embodiment of the present invention.
【図３】従来のサイリスタ開閉器の回路構成を示す。FIG. 3 shows a circuit configuration of a conventional thyristor switch.
１ サイリスタスイッチ ２ 真空電磁接触器 ３ 酸化亜鉛形避雷器 ４ 制御装置 ５ ヒューズ ６ 光ファイバ ７ 光ＣＴ DESCRIPTION OF SYMBOLS 1 Thyristor switch 2 Vacuum electromagnetic contactor 3 Zinc oxide lightning arrester 4 Control device 5 Fuse 6 Optical fiber 7 Optical CT
フロントページの続き (58)調査した分野(Int.Cl.6，ＤＢ名) H01T 15/00 H02H 3/08 - 3/253 H02H 7/00 H02H 7/10 - 7/20 H03K 17/00 - 17/70Continuation of the front page (58) Field surveyed (Int.Cl. 6 , DB name) H01T 15/00 H02H 3/08-3/253 H02H 7/00 H02H 7/10-7/20 H03K 17/00-17 / 70
Claims (2)
閉器との直列体を有し、かつこれらサイリスタスイッチ
にそれぞれ並列にサイリスタ素子を過電圧から保護する
保護回路を備えた静止形開閉器において、前記保護回路
を、酸化亜鉛形避雷器とヒューズとの直列体で構成し、
前記ヒュ−ズの溶断による溶断検出信号によって、前記
機械式開閉器を開くように構成したことを特徴とする静
止形開閉器。1. A static switch comprising a series body of a thyristor switch and a mechanical switch for each phase, and a protection circuit for protecting a thyristor element from overvoltage in parallel with each of the thyristor switches. The protection circuit comprises a series body of a zinc oxide arrester and a fuse ,
According to the fusing detection signal by the fusing of the fuse,
A static switch characterized by being configured to open a mechanical switch .
閉器との直列体を有し、かつこれらサイリスタスイッチ
にそれぞれ並列にサイリスタ素子を過電圧から保護する
保護回路を備えた静止形開閉器において、前記保護回路
を、酸化亜鉛形避雷器で構成するとともに、該酸化亜鉛
形避雷器の電流を検出する変流器を配置し、前記変流器
により過電流を検出した際に、前記機械式開閉器を開く
ように構成したことを特徴とする静止形開閉器。2. A static switch having a series circuit of a thyristor switch and a mechanical switch for each phase, and a protection circuit for protecting a thyristor element from overvoltage in parallel with each of the thyristor switches. The protection circuit is constituted by a zinc oxide surge arrester, and a current transformer for detecting a current of the zinc oxide surge arrester is arranged .
When the overcurrent is detected, the mechanical switch is opened.
A static switch characterized by having such a configuration .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4219257A JP2806163B2 (en) | 1992-08-18 | 1992-08-18 | Static switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4219257A JP2806163B2 (en) | 1992-08-18 | 1992-08-18 | Static switch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0670456A JPH0670456A (en) | 1994-03-11 |
| JP2806163B2 true JP2806163B2 (en) | 1998-09-30 |
Family
ID=16732689
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4219257A Expired - Lifetime JP2806163B2 (en) | 1992-08-18 | 1992-08-18 | Static switch |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2806163B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7902227B2 (en) * | 2007-07-27 | 2011-03-08 | Janssen Pharmaceutica Nv. | C-7 isoxazolinyl quinolone / naphthyridine derivatives useful as antibacterial agents |
| CN106451370B (en) * | 2016-10-27 | 2018-08-24 | 中国北方车辆研究所 | A kind of high voltage connector band load disjunction control method |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0160491U (en) * | 1987-10-09 | 1989-04-17 | ||
| JPH01283719A (en) * | 1988-05-09 | 1989-11-15 | Mitsubishi Electric Corp | Remote operation type circuit breaker |
-
1992
- 1992-08-18 JP JP4219257A patent/JP2806163B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0670456A (en) | 1994-03-11 |
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