JPS5935527A - Time limit automatic cooperation pilot protecting relay system - Google Patents
Time limit automatic cooperation pilot protecting relay systemInfo
- Publication number
- JPS5935527A JPS5935527A JP57143238A JP14323882A JPS5935527A JP S5935527 A JPS5935527 A JP S5935527A JP 57143238 A JP57143238 A JP 57143238A JP 14323882 A JP14323882 A JP 14323882A JP S5935527 A JPS5935527 A JP S5935527A
- Authority
- JP
- Japan
- Prior art keywords
- relay
- time limit
- power supply
- protective
- pilot
- 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
Landscapes
- Emergency Protection Circuit Devices (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
本発明は、受電電源系統の保護協調に係シ、特に幾つか
の分岐をもつ多段電源系統の保護に好適な時限自動協調
形パイロット保護継電方式に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to protection coordination of a receiving power supply system, and particularly to a timed automatic coordination type pilot protection relay system suitable for protection of a multi-stage power supply system having several branches.
従来の多段電源系統保膿用継電器としては受電並びに区
分変電所各回線毎に逆限時形過電流継電器が設置される
。故障が発生すると故障回路に直接接続されているしゃ
断器を開放し、他の健全回路には給電を継続させる必要
がある。As a conventional multi-stage power supply system retaining relay, a reverse time-limiting overcurrent relay is installed for each line of power receiving and sectional substations. When a fault occurs, it is necessary to open the breaker directly connected to the faulty circuit and continue supplying power to other healthy circuits.
しかし短絡電流として大電流が流れる領域では受電継電
器の時限をよシ小さく設定されるため多段電源系統の末
端の短絡に対する時限協調が、多段層が多くなる程、困
難となシ、電源側上位の健全回線の保護継電器が誤動作
し、健全回線がしゃ断される欠点があった。However, in areas where large currents flow as short-circuit currents, the time limit of the power receiving relay is set to be much smaller, so the time limit coordination for short circuits at the end of a multi-stage power supply system becomes more difficult as the number of multi-stage layers increases. The problem was that the protective relay on the healthy line would malfunction, causing the healthy line to be cut off.
本発明の目的は受電電源系統の保護協調を図った時限自
動協調形パイロット保護継電器間を提供することにある
。SUMMARY OF THE INVENTION An object of the present invention is to provide a timed automatic coordination type pilot protection relay that achieves protection coordination of a receiving power supply system.
本発明の特徴は複数の電源分岐を経て構成され各区分変
電所毎に保護継電器が設置される多段電源系統において
、系統の末端に電気故障が発生したとき該末端に設けら
れた保護継電器の動作信号を各保護継電器間に布設され
たパイロットワイヤを介して上部各段に設けられた保護
継電器に伝送し、該保護継電器の動作時限を自動的に遅
延させるようにした点にある。The feature of the present invention is that in a multi-stage power supply system configured through a plurality of power supply branches and in which a protective relay is installed at each substation, when an electrical failure occurs at the end of the system, the protective relay installed at the end operates. A signal is transmitted to the protective relays provided at each upper stage through pilot wires installed between the protective relays, and the operating time of the protective relays is automatically delayed.
以下、本発明の実施例を図面に基づいて説明する。第１
図には受電電源系統が示されており、同図において１０
は電源（例えば変電所）であシ、電力は電源１０よυ受
電しゃ断器５２Ｂ、を介して負荷しゃ断器５ｚＰ１．５
２Ｆ２により負荷に供給される。また受電端及び負荷端
には夫々、過電流継電器ＯＣＲ，０ＣＦＩが設置されて
いる。Embodiments of the present invention will be described below based on the drawings. 1st
The figure shows the receiving power supply system, and in the figure there are 10
is a power source (for example, a substation), and power is passed from the power source 10 to the load breaker 5zP1.5 via the power receiving breaker 52B.
2F2 supplies the load. Further, overcurrent relays OCR and 0CFI are installed at the power receiving end and the load end, respectively.
更に過電流保護継電器ＯＣＲ，０ＣＦＩとの間には過電
流継電器０ＣＦ１の動作信号を伝送するパイロットワイ
ヤ２０が布設されている。Furthermore, a pilot wire 20 is installed between the overcurrent protection relays OCR and 0CFI to transmit the operating signal of the overcurrent relay 0CF1.
第２図には過電流継電器の動作特性が示されており、同
図において曲線Ａは過電流継電器ＯＣＲ，、曲線Ｂは過
電流継電器０ＣＦＩの特性を示している。第１図のＦ点
で故障が発生すると、過電流継電器０ＣＦＩ、ＯＣＲが
動作し、この時の短絡電流は（イ）点に示す如く、短時
限領域となり両者の動作時限が接近する。故障電流は電
源に近い故障息根、大きくなるため過電流保護継電器Ｏ
ＣＲの時限を大幅に長くすることはできない。この結果
過電流保護継電器ＯＣＲと０ＣＦ１との時限協調が不安
定となシ、負荷端の故障で受電端のしゃ断器が誤動作す
る等の不具合を生ずる。FIG. 2 shows the operating characteristics of the overcurrent relay, in which curve A shows the characteristics of the overcurrent relay OCR, and curve B shows the characteristics of the overcurrent relay 0CFI. When a failure occurs at point F in FIG. 1, overcurrent relays 0CFI and OCR operate, and the short circuit current at this time becomes a short time limit region as shown at point (A), and the operating time limits of both relays approach each other. The fault current increases when the fault source is close to the power supply, so overcurrent protection relay O
It is not possible to significantly lengthen the CR time limit. As a result, problems such as unstable time coordination between the overcurrent protection relays OCR and 0CF1 and malfunction of the breaker at the receiving end due to a failure at the load end occur.
第３図は第１図に示した受電電源系統において負荷端の
過電流保護継電器０ＣＦＩの動作信号が過電流保護継電
器０ＣＲＫパイロツトワイヤ２０を介して伝送され、過
電流保護継電器ＯＣＲの動作時限が遅延された場合の過
電流保護継電器の動作特性を示している。同図から明ら
かなように過電流保護継電器ＯＣＲの動作特性は曲線Ａ
（遅延前）から曲線Ｃに変わシ、過電流保護継電器０Ｃ
Ｆ１との時限協調を十分にとれるようになる。Figure 3 shows that in the receiving power supply system shown in Figure 1, the operation signal of the overcurrent protection relay 0CFI at the load end is transmitted via the overcurrent protection relay 0CRK pilot wire 20, and the operation time of the overcurrent protection relay OCR is delayed. The operating characteristics of the overcurrent protection relay are shown below. As is clear from the figure, the operating characteristics of the overcurrent protection relay OCR are curve A.
(before delay) changes to curve C, overcurrent protection relay 0C
This will allow for sufficient time-limited coordination with F1.
本実施例によれば、電源端の故障に対しては、受電継電
器を速やかに動作させ、負荷端の故障では負荷端継電器
の始動を条件に時限を自動遅延させ後備保護の役目をも
たせ、安定した電源系統を確保することが出来る。According to this embodiment, in the event of a failure at the power supply end, the power receiving relay is activated immediately, and in the event of a failure at the load end, the time limit is automatically delayed on the condition that the load end relay is started, thereby serving as backup protection and providing stability. It is possible to secure a reliable power supply system.
以上に説明した如く本発明では複数の電源分岐を経て構
成され各区分変電所毎に保護継電器が設置される多段電
源系統において、系統の末端に電気故障が発生したとき
該末端に設けられた保護継電器の動作信号を各保護継電
器間に布設されたパイロットワイヤを介して上部各段に
設けられた保護継電器に伝送し、該保護継電器の動作時
限を自動的に遅延させるように構成したので本発明によ
れば保護継電器システムの信頼性が向上し、電源系統に
おける電力安定供給が可能となる。As explained above, in the present invention, in a multi-stage power supply system that is configured through a plurality of power supply branches and has a protective relay installed at each substation, when an electrical failure occurs at the end of the system, the protection provided at the end is The present invention is constructed so that the operating signal of the relay is transmitted to the protective relays provided at each upper stage through pilot wires installed between the respective protective relays, and the operating time of the protective relays is automatically delayed. According to the above, the reliability of the protective relay system is improved and a stable supply of power in the power supply system becomes possible.
第１図は受電電源系統を示す接続図、第２図は過電流保
護継電器の短絡電流に対する動作限時特性を示す図、第
３図は負荷端の故障時に受電端過電流保護継電器の動作
時限が自動遅延した場合における動作限時特性を示す図
である。
１０・・・電源、２０・・・パイロットワイヤ、０ＣＲ
１ＯＣＦ、１・・・過電流保護継電器、５２几、５２Ｆ
’ｌ。Figure 1 is a connection diagram showing the receiving power supply system, Figure 2 is a diagram showing the operating time limit characteristics of the overcurrent protection relay against short-circuit current, and Figure 3 is a diagram showing the operating time limit of the overcurrent protection relay at the receiving end in the event of a failure at the load end. It is a figure which shows the operation|movement time limit characteristic in the case of automatic delay. 10...Power supply, 20...Pilot wire, 0CR
1OCF, 1...Overcurrent protection relay, 52L, 52F
'l.
Claims (1)
護継電器が設置される多段電源系統において、系統の末
端に電気故障が発生したとき該末端に設けられた保護継
電器の動作信号を各保護継電器間に布設されたパイロッ
トワイヤを介して上部各段に設けられた保護継電器に伝
送し、該保護継電器の動作時限を自動的に遅延させるこ
とによシ保護挽調をとることを特徴とする時限自動協調
形パイロット保護継電方式。1. In a multi-stage power supply system configured through multiple power branches and with a protective relay installed at each substation, when an electrical failure occurs at the end of the system, the operation signal of the protective relay installed at the end is transmitted to each The signal is transmitted to the protective relays installed at each upper stage through pilot wires installed between the protective relays, and the operation time of the protective relays is automatically delayed to adjust the protection. A timed automatic cooperative pilot protection relay system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57143238A JPS5935527A (en) | 1982-08-20 | 1982-08-20 | Time limit automatic cooperation pilot protecting relay system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57143238A JPS5935527A (en) | 1982-08-20 | 1982-08-20 | Time limit automatic cooperation pilot protecting relay system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5935527A true JPS5935527A (en) | 1984-02-27 |
Family
ID=15334105
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57143238A Pending JPS5935527A (en) | 1982-08-20 | 1982-08-20 | Time limit automatic cooperation pilot protecting relay system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5935527A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6348916A (en) * | 1986-08-19 | 1988-03-01 | Fujitsu Ltd | Correcting circuit for error of elemental value |
| US5589785A (en) * | 1994-04-29 | 1996-12-31 | Analog Devices, Inc. | Low-voltage CMOS comparator |
| CN102709885A (en) * | 2012-05-25 | 2012-10-03 | 南京国网电瑞继保科技有限公司 | Method for isolating power distribution network fault without constant time lag in over-current protection of transformer substation |
-
1982
- 1982-08-20 JP JP57143238A patent/JPS5935527A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6348916A (en) * | 1986-08-19 | 1988-03-01 | Fujitsu Ltd | Correcting circuit for error of elemental value |
| JPH0577217B2 (en) * | 1986-08-19 | 1993-10-26 | Fujitsu Ltd | |
| US5589785A (en) * | 1994-04-29 | 1996-12-31 | Analog Devices, Inc. | Low-voltage CMOS comparator |
| US5600275A (en) * | 1994-04-29 | 1997-02-04 | Analog Devices, Inc. | Low-voltage CMOS comparator with offset cancellation |
| CN102709885A (en) * | 2012-05-25 | 2012-10-03 | 南京国网电瑞继保科技有限公司 | Method for isolating power distribution network fault without constant time lag in over-current protection of transformer substation |
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