JPH01231617A - Abnormality detector - Google Patents
Abnormality detectorInfo
- Publication number
- JPH01231617A JPH01231617A JP63053536A JP5353688A JPH01231617A JP H01231617 A JPH01231617 A JP H01231617A JP 63053536 A JP63053536 A JP 63053536A JP 5353688 A JP5353688 A JP 5353688A JP H01231617 A JPH01231617 A JP H01231617A
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- superconductive material
- secondary side
- current
- superconducting material
- 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
- 230000005856 abnormality Effects 0.000 title claims abstract description 11
- 238000001514 detection method Methods 0.000 claims description 7
- 238000005259 measurement Methods 0.000 abstract description 2
- 230000002159 abnormal effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
Landscapes
- Emergency Protection Circuit Devices (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、電力系統の異常の検出装置に係り、特に、高
精度で、かつ、高速に電力系統の異常を検出するのに好
適な装置に関する。[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a device for detecting an abnormality in a power system, and in particular, a device suitable for detecting an abnormality in a power system with high precision and at high speed. Regarding.
電力系統の異常を検出するものとしては、「保護継電シ
ステム」 （昭和５１年４月、電気書院発行）８．２所
内機器保護システム、ｐ２６３Ｌこ記されている過電圧
、及び、過電流等のリレーがある。しかし、電力系統の
異常を高速、かつ、高精度で検出できないという欠点が
あった。``Protective relay system'' (April 1976, published by Denkishoin) 8.2 In-house equipment protection system, page 263L For detecting abnormalities in the power system, overvoltage, overcurrent, etc. are detected. There is a relay. However, it has the drawback that abnormalities in the power system cannot be detected quickly and with high accuracy.
上記従来技術は、事故検出の高精度化、及び、高速化と
いう点については、考慮がなされておらず、従来技術を
用いた場合には、上記性能には限界があった。The above-mentioned conventional technology does not take into consideration the high precision and high speed of accident detection, and when the conventional technology is used, there is a limit to the above-mentioned performance.
本発明の目的は、高精度で、かつ、高速に事故を検出す
るための装置を提供することにある。An object of the present invention is to provide a device for detecting accidents with high precision and high speed.
上記目的は、次のようにすることにより達せられる。す
なわち、電圧、又は、電流検出装置の二次側に超伝導材
料を設置し、常時の状態では、電気抵抗零附近の温度に
制御しておく。系統が異常となり、電圧、又は、電流が
増大すると、超伝導材料の温度は上昇し、電気抵抗は増
大する。このため、超伝導材料の両端の電圧を測定する
ことにより、系統の異常を高速、かつ、高精度で検出で
きる。The above objective can be achieved as follows. That is, a superconducting material is installed on the secondary side of the voltage or current detection device, and the temperature is controlled to be around zero electrical resistance under normal conditions. When the system becomes abnormal and the voltage or current increases, the temperature of the superconducting material increases and the electrical resistance increases. Therefore, by measuring the voltage across the superconducting material, system abnormalities can be detected quickly and with high precision.
前記超伝導材料は、常時は、電気抵抗零附近の温度に制
御し、事故時には、電圧、又は、電流変成器を通して大
電流を通過させる。このため、超伝導材料の温度は急速
に上昇し、電圧抵抗は増大する。常時、超伝導材料の両
端の電圧を測定することにより、系統異常時は、電流、
及び、抵抗の増大という両者の効果により、電圧は急速
に増大する。このため、健全状態との識別は容易となる
。The superconducting material is normally controlled at a temperature close to zero electrical resistance, and in the event of an accident, a large current is passed through a voltage or current transformer. Therefore, the temperature of the superconducting material rises rapidly and the voltage resistance increases. By constantly measuring the voltage across the superconducting material, in the event of a system abnormality, the current,
The voltage increases rapidly due to both the effects of increasing resistance. Therefore, it is easy to distinguish it from a healthy state.
このように健全状態と異常時の超伝導材料の両端の電圧
が大幅に異なるため、健全時と異常時を誤検出すること
はない。In this way, since the voltage across the superconducting material in a normal state and an abnormal state differs significantly, there is no possibility of erroneously detecting a normal state and an abnormal state.
以下、本発明の一実施例を第２図により説明する。図に
おいて、Ｇ １− Ｇ ａは同期機を、Ｂは母線を、Ｌ
１〜Ｌ４は送電線を、Ｆは事故点を示す。An embodiment of the present invention will be described below with reference to FIG. In the figure, G1-Ga is the synchronous machine, B is the busbar, and L
1 to L4 indicate power transmission lines, and F indicates the accident point.
Ｆで事故が生じた場合には、高速に事故を検出し、高速
に、遮断器ＣＢ、、ＣＢ２を遮断し、事故を系統より除
去する必要がある。このため、事故検出部に超伝導材料
を主体とした装置を設置する。If an accident occurs at F, it is necessary to detect the accident at high speed, quickly shut off circuit breakers CB, CB2, and eliminate the accident from the system. For this reason, equipment mainly made of superconducting materials will be installed in the accident detection section.
第１図に示すように、電流変成器ＣＴの二次側に、超伝
導材料Ｎを接続しておき、常時はこの材料が超伝導状態
となる温度に制御しておく。この材料の両端の電圧を計
測部りで計測し、この電圧が一定値以上となった場合に
、遮断器ＣＢに遮断信号Ｓを介して遮断指令を発する構
成とする。系統事故により、電流変成器ＣＴに大電流が
流れると、この電流のため、超伝導材料は、超伝導状態
よりずれ、一定の抵抗値をもつことになる。このため、
超伝導材料の両端の電圧を計測した場合には、−定値以
上の電圧をもつことになる。このように、計測電圧が一
定値以上となった場合に、遮断器ＣＢに遮断指令を発す
るようにすればよい。As shown in FIG. 1, a superconducting material N is connected to the secondary side of the current transformer CT, and the temperature is normally controlled at such a temperature that this material becomes superconducting. The voltage at both ends of this material is measured by a measuring section, and when this voltage exceeds a certain value, a cut-off command is issued to the circuit breaker CB via a cut-off signal S. When a large current flows through the current transformer CT due to a system fault, the superconducting material deviates from its superconducting state due to this current and has a certain resistance value. For this reason,
When the voltage across the superconducting material is measured, it will have a voltage greater than the - constant value. In this way, when the measured voltage exceeds a certain value, a shutdown command may be issued to the circuit breaker CB.
なお、電圧の計測にあたっては、従来より用いられてい
るディジタル回路の考え方を用いれば簡単に達成できる
。Note that voltage measurement can be easily achieved by using the concept of conventionally used digital circuits.
これまでの説明は、過電機検出の例で行ったが、過電圧
検出も同様にできることは、いうまでもない。The explanation so far has been made using an example of over-voltage detection, but it goes without saying that over-voltage detection can be performed in the same way.
本発明によれば、電力系統の事故を高速、かつ、高精度
で検出できる。According to the present invention, power system faults can be detected quickly and with high accuracy.
第１図は本発明の一実施例の概要説明図、第２図は本発
明の詳細な説明するための系統モデル図である。
０１〜Ｇ４・・・同期機、Ｌ１〜Ｌ４・・・送電線、Ｂ
・・・母線、ＣＢ １〜ＣＢ２ ・・遮断器、ＣＴ
ｔ〜ＣＴ２第１図
第２図FIG. 1 is a schematic explanatory diagram of an embodiment of the present invention, and FIG. 2 is a system model diagram for explaining the present invention in detail. 01~G4...Synchronous machine, L1~L4...Power line, B
... Bus bar, CB 1 to CB2 ... Circuit breaker, CT
t~CT2 Figure 1 Figure 2
Claims (1)
出する装置において、 電圧又は電流の検出装置の二次側に超伝導材料を接続し
、前記超伝導材料の両端の電圧を測定することにより、
系統の異常を検出する手段を設けたことを特徴とする電
力系統の異常検出装置。[Scope of Claims] 1. In a device for detecting voltage or current abnormalities that occur during power system accidents, a superconducting material is connected to the secondary side of the voltage or current detection device, and both ends of the superconducting material are connected to each other. By measuring the voltage,
An abnormality detection device for an electric power system, characterized in that it includes means for detecting an abnormality in the power system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63053536A JPH01231617A (en) | 1988-03-09 | 1988-03-09 | Abnormality detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63053536A JPH01231617A (en) | 1988-03-09 | 1988-03-09 | Abnormality detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01231617A true JPH01231617A (en) | 1989-09-14 |
Family
ID=12945528
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63053536A Pending JPH01231617A (en) | 1988-03-09 | 1988-03-09 | Abnormality detector |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01231617A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114839488A (en) * | 2022-05-07 | 2022-08-02 | 上海超导科技股份有限公司 | System and method for judging overcurrent impact resistance of superconducting strip |
-
1988
- 1988-03-09 JP JP63053536A patent/JPH01231617A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114839488A (en) * | 2022-05-07 | 2022-08-02 | 上海超导科技股份有限公司 | System and method for judging overcurrent impact resistance of superconducting strip |
| CN114839488B (en) * | 2022-05-07 | 2022-12-09 | 上海超导科技股份有限公司 | System and method for judging overcurrent impact resistance of superconducting strip |
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