JPS6339424A - Protective relay system - Google Patents
Protective relay systemInfo
- Publication number
- JPS6339424A JPS6339424A JP61179964A JP17996486A JPS6339424A JP S6339424 A JPS6339424 A JP S6339424A JP 61179964 A JP61179964 A JP 61179964A JP 17996486 A JP17996486 A JP 17996486A JP S6339424 A JPS6339424 A JP S6339424A
- Authority
- JP
- Japan
- Prior art keywords
- power
- generator
- relay
- receiving system
- power receiving
- 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.)
- Granted
Links
- 230000001681 protective effect Effects 0.000 title claims description 5
- 238000010248 power generation Methods 0.000 claims description 12
- 230000001131 transforming effect Effects 0.000 claims description 2
- 230000005540 biological transmission Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 1
Landscapes
- Supply And Distribution Of Alternating Current (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) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は常用発電設備をそなえた自家用受変電設備にお
ける保護継電方式に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a protective relay system in private power receiving and transforming equipment equipped with regular power generation equipment.
自家用受変電設備における常用発電設備は、自家変電所
内の電力供給用として設置され、受電系統から、逆に、
電力を供給するようなことはなく、電力が、受電から逆
に供給しようとした場合、その電力の方向を電力方向継
電器で検出し、受電系を解列する手段は公知のことであ
る。Regular power generation equipment in private power substations is installed to supply power within the private substation, and conversely, from the power receiving system,
If power is not supplied and the power is to be supplied in the opposite direction from the power receiving system, it is known that the direction of the power is detected by a power direction relay and the power receiving system is disconnected from the line.
本発明では、発電機で発電された電力を、自家用変電所
に給電することはもちろん、発電機で発電された電力を
更に受電系を介して逆に送電するため、前述の電力方向
継電器が動作しただけで受電系を解列することは、その
電力運用ヒできない。In the present invention, the power generated by the generator is not only supplied to the private substation, but also the power generated by the generator is transmitted back through the power receiving system, so the power direction relay described above operates. Disconnecting the power receiving system just by doing so will not affect the power operation.
又、受電系から、逆に、送電できる電力量は、発電機で
発電された総発電量から、自家用変電所で使用する電力
量を差し引いた電力量となる。この電力量は１発電機の
発電電力量が一定とすると自家用変電所で使用する電力
量に左右され、自家用変電所で使用する電力量は一般に
一定でないため、受電系から逆に送電できる電力量も一
定とはならない。一方、逆送電する電力量も一定とは限
らず、増加してしまい、発電機の発電能力を超過する場
合もある。この場合、発電機は停止してしまい、逆送電
できなくなるばかりでなく、自家の変電所も停止する事
態となる。Conversely, the amount of power that can be transmitted from the power receiving system is the amount of power obtained by subtracting the amount of power used at the private substation from the total amount of power generated by the generator. Assuming that the amount of power generated by one generator is constant, this amount of power depends on the amount of power used at the private substation, and since the amount of power used at the private substation is generally not constant, the amount of power that can be transmitted from the receiving system is not constant either. On the other hand, the amount of power that is transmitted in reverse is not necessarily constant, but increases, and may exceed the power generation capacity of the generator. In this case, not only will the generator stop, making it impossible to reverse power transmission, but the private substation will also be stopped.
そこで、自家用変電所の停電を防止するため、発電機の
発電能力具−トになった場合、逆送電分のみを解列し、
自家用変電所のみは、そのまま、電力を使用できるよう
考慮する必要がある。Therefore, in order to prevent power outages at private substations, when the generator's power generation capacity is reached, only the reverse power is disconnected.
Only private substations need to be considered so that electricity can be used as is.
−ヒ記目的は、受電設備から逆送電されていることを検
出すると共に、発電機の発電能力の限界になっているこ
とを検出し、両方の要素で、受電系を解列することによ
り達成される。- The objective described in (h) is achieved by detecting that power is being transmitted backwards from the power receiving equipment and detecting that the power generation capacity of the generator is at its limit, and disconnecting the power receiving system using both elements. be done.
受電系から逆送電していることを検出するには、受電系
に設けられた、変流器３と、計器用変圧器２によって作
動する電力方向継電器４により、逆送電することを検出
できる。この方式は、前述の従来技術である電力継電器
そのものであり公知の技術である。In order to detect that power is being transmitted in reverse from the power receiving system, reverse power transmission can be detected by a power direction relay 4 operated by a current transformer 3 and an instrument transformer 2 provided in the power receiving system. This method is the same as the conventional power relay described above and is a well-known technology.
一方、発電機９の発電量の能力を検出するひとつの方法
として過電流継電器による方法がある。On the other hand, one method for detecting the power generation capacity of the generator 9 is a method using an overcurrent relay.
発電機８により発電された電力は、変流器８２発電機用
遮断器６を介して、自家用変電設備用遮断器５を通して
自家用変電設備へ電力を供給すると共に、受電用遮断器
１を通して電力を逆送電するが、発電機９の発電量は、
変流器８に接続された過電流継電器７で、一定置具−１
−になったことを検出できる。電力方向継電器４と過電
流継電器７が両方動作した場合、受電用遮断器１を解列
すれば、自家用変電設備用遮断器５を通してそのまま電
力供給を続行できる。The electric power generated by the generator 8 is supplied to the private substation equipment via the current transformer 82 and the generator circuit breaker 6, and the private substation equipment circuit breaker 5, and is also supplied to the private substation equipment through the power receiving circuit breaker 1. Although the power is transmitted in reverse, the amount of power generated by generator 9 is
Constant fixture-1 with overcurrent relay 7 connected to current transformer 8
- can be detected. When both the power direction relay 4 and the overcurrent relay 7 operate, if the power receiving circuit breaker 1 is disconnected, power can be continued to be supplied through the private substation equipment circuit breaker 5.
第１図は、その一実施例を示す。 FIG. 1 shows one embodiment thereof.
発電機９の発電能力を検出する方法として、例えば、タ
ービン発電機のような場合、蒸気量により発電能力が左
右されるため、その蒸気量を検出することにより、過電
流継電器７の代用とすることも可能となる。As a method for detecting the power generation capacity of the generator 9, for example, in the case of a turbine generator, the power generation capacity is affected by the amount of steam, so detecting the amount of steam is used as a substitute for the overcurrent relay 7. It also becomes possible.
第２図は、本発明の保護継電システムを構成する。ブロ
ックダイヤグラムで、受電系より逆送電することを検出
する電力方向継電器１０の要素であり、発電機９の発電
能力を検出する要ＭＩＬとのＡＮＤ条件で、遮断器に遮
断指令を出すことを示したものである。FIG. 2 configures the protective relay system of the present invention. The block diagram shows that it is an element of the power direction relay 10 that detects reverse power transmission from the power receiving system, and issues a shutdown command to the circuit breaker under the AND condition with the required MIL that detects the power generation capacity of the generator 9. It is something that
本発明によれば、自家用受変電設備に設置された常用発
電機の能力を有効に活用し、総合的な省エネルギ効果を
得ることができ、万一、発電能力を超過する電力量が、
自家用変電所と、受電系を通した逆送電分に供給された
場合、自家用変電所のみは、電力供給をそのまま受ける
ことができる。According to the present invention, it is possible to effectively utilize the capacity of a regular power generator installed in private power receiving and substation equipment, and to obtain a comprehensive energy saving effect.
If power is supplied to the private substation and the reverse transmission through the power receiving system, only the private substation can receive the power as is.
第１図は、本発明の一実施例の単線結線図、第２図は、
保護継電方式を示すブロックダイヤグラムである。
４・・・電力方向継電器。FIG. 1 is a single line diagram of an embodiment of the present invention, and FIG. 2 is a
1 is a block diagram showing a protective relay system. 4...Power direction relay.
Claims (1)
電系統が並列運転され、かつ、発電設備の余剰電力を前
記受電系統から送り出す系統において、 電力方向継電器と、発電機の負荷量を検出する継電器と
により、前記受電系統を解列するシステムとしたことを
特徴とする保護継電方式。[Scope of Claims] 1. In a power receiving and transforming facility equipped with regular power generation equipment, in which a power receiving system and a power generation system are operated in parallel, and in which surplus power of the power generation equipment is sent out from the power receiving system, a power directional relay; A protective relay system characterized in that the system disconnects the power receiving system using a relay that detects a load amount of a generator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61179964A JP2507338B2 (en) | 1986-08-01 | 1986-08-01 | Protection equipment for power receiving and transforming equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61179964A JP2507338B2 (en) | 1986-08-01 | 1986-08-01 | Protection equipment for power receiving and transforming equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6339424A true JPS6339424A (en) | 1988-02-19 |
| JP2507338B2 JP2507338B2 (en) | 1996-06-12 |
Family
ID=16075052
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61179964A Expired - Lifetime JP2507338B2 (en) | 1986-08-01 | 1986-08-01 | Protection equipment for power receiving and transforming equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2507338B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0578149U (en) * | 1992-03-24 | 1993-10-22 | 三菱電機株式会社 | Power plant protection equipment |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS49134224U (en) * | 1973-03-22 | 1974-11-19 | ||
| JPS50143045A (en) * | 1974-05-03 | 1975-11-18 | ||
| JPS6046735A (en) * | 1983-08-24 | 1985-03-13 | 株式会社日立製作所 | Method of disassembling parallel power system |
-
1986
- 1986-08-01 JP JP61179964A patent/JP2507338B2/en not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS49134224U (en) * | 1973-03-22 | 1974-11-19 | ||
| JPS50143045A (en) * | 1974-05-03 | 1975-11-18 | ||
| JPS6046735A (en) * | 1983-08-24 | 1985-03-13 | 株式会社日立製作所 | Method of disassembling parallel power system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0578149U (en) * | 1992-03-24 | 1993-10-22 | 三菱電機株式会社 | Power plant protection equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2507338B2 (en) | 1996-06-12 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |