JPH0564527B2 - - Google Patents
Info
- Publication number
- JPH0564527B2 JPH0564527B2 JP60164618A JP16461885A JPH0564527B2 JP H0564527 B2 JPH0564527 B2 JP H0564527B2 JP 60164618 A JP60164618 A JP 60164618A JP 16461885 A JP16461885 A JP 16461885A JP H0564527 B2 JPH0564527 B2 JP H0564527B2
- Authority
- JP
- Japan
- Prior art keywords
- power generation
- auxiliary
- shaft
- generation unit
- equipment
- 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
- 238000010248 power generation Methods 0.000 claims description 49
- 230000005856 abnormality Effects 0.000 claims description 5
- 238000001816 cooling Methods 0.000 description 28
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 11
- 239000000498 cooling water Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 230000000737 periodic effect Effects 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Landscapes
- Supply And Distribution Of Alternating Current (AREA)
Description
【発明の詳細な説明】
〔発明の技術分野〕
本発明は、複数の発電ユニツトに対して複数台
の部分容量の補機が共通設備として存在し、ある
補機の異常によるトリツプに備えて予備機を自動
起動するようにした発電プラントの補機系統制御
装置の改良に関するものである。Detailed Description of the Invention [Technical Field of the Invention] The present invention provides a system in which a plurality of partial capacity auxiliary machines exist as common equipment for a plurality of power generation units, and a backup machine is provided in case of a trip due to an abnormality of a certain auxiliary machine. This invention relates to an improvement of an auxiliary equipment system control device for a power generation plant that automatically starts the equipment.
複数の発電ユニツトに対して複数台の部分容量
の補機が共通設備として存在する従来の発電プラ
ントの補機系統について、軸冷系統を例として第
２図を用いて説明する。
An auxiliary equipment system of a conventional power generation plant in which a plurality of partial capacity auxiliary equipment exist as common equipment for a plurality of power generation units will be described using FIG. 2, taking a shaft cooling system as an example.
第２図は、複数の発電ユニツトに対して複数台
の部分容量の補機が共通設備として存在する補機
系統の構成例を示すものである。なお図では、４
つの発電ユニツトに対して総容量の50％定格の軸
冷ポンプ３台を補機として設置し、そのうち２台
を常時運転機、１台を予備機とした場合を示して
いる。 FIG. 2 shows a configuration example of an auxiliary system in which a plurality of partial capacity auxiliary machines exist as common equipment for a plurality of power generation units. In the figure, 4
The figure shows a case in which three shaft-cooled pumps with a rating of 50% of the total capacity are installed as auxiliary equipment for one power generation unit, two of which are in constant operation and one is a standby unit.
図において、１〜３は補機としての軸冷ポン
プ、４は軸冷水の圧力正常または低下の判定を行
なう圧力スイツチ、９〜１２は各発電ユニツト、
１３は軸冷水冷却器である。また、５〜８は上記
各発電ユニツト９〜１２の入口側に設けられた軸
冷水しや断弁で、発電ユニツト９〜１２の定期点
検時等を除いて通常は全開状態となつている。一
方、１４は起動停止制御回路１５を備えてなる軸
冷系統制御装置であり、軸冷ポンプ制御スイツチ
１６〜１８の操作により上記軸冷ポンプ１〜３の
起動停止を行なうと共に、ポンプトリツプ等の場
合に圧力スイツチ４の条件により予備機を起動さ
せて、各発電ユニツト９〜１２に対して十分な軸
冷水量が確保できるよう制御が行なわれるように
なつている。 In the figure, 1 to 3 are shaft-cooled pumps as auxiliary equipment, 4 is a pressure switch that determines whether the pressure of shaft-chilled water is normal or decreased, 9 to 12 are each power generation unit,
13 is an axially cooled water cooler. Further, reference numerals 5 to 8 indicate shaft cooling water valves provided on the inlet side of each of the power generation units 9 to 12, which are normally fully open except during periodic inspections of the power generation units 9 to 12. On the other hand, 14 is a shaft cooling system control device comprising a start/stop control circuit 15, which starts and stops the shaft cooling pumps 1 to 3 by operating shaft cooling pump control switches 16 to 18, and also in case of pump trip etc. The standby unit is activated according to the conditions of the pressure switch 4, and control is performed to ensure a sufficient amount of shaft cooling water for each of the power generation units 9-12.
［背景技術の問題点］
しかしながら、このような従来の軸冷系統にお
いては、運転中の複数台のポンプのうち１台が異
常によりトリツプした際に、予備機が定期点検中
で起動ロツクアウト状態にある等の理由により予
備機起動ができなかつたような場合には、各発電
ユニツト９〜１２に対する必要冷却水量を十分に
確保することができないばかりでなく、運転中の
ポンプも過負荷でトリツプしてしまう可能性があ
る。そして、このような状態に至ると全ての発電
ユニツト９〜１２をトリツプまたは停止させる必
要があり、電力系統に大きな影響を与えてしまう
恐れがある。[Problems in the Background Art] However, in such a conventional shaft cooling system, when one of the multiple pumps in operation trips due to an abnormality, the standby unit is undergoing periodic inspection and is in a startup lockout state. If the backup unit cannot be started for some reason, not only will it not be possible to secure a sufficient amount of cooling water for each power generation unit 9 to 12, but the pumps in operation may also trip due to overload. There is a possibility that it will happen. When such a state occurs, it is necessary to trip or stop all the power generation units 9 to 12, which may have a large impact on the power system.
本発明は上記のような問題を解決するために成
されたもので、その目的は補機系統において運転
中のある補機がトリツプした後に予備機が起動し
なかつた場合に、残りの運転中の補機が過負荷と
なることにより起り得る全発電ユニツトの停止を
確実に防止し、運転中の発電ユニツトの少なくと
も一部を健全なまま運転継続させることが可能な
発電プラントの補機系統制御装置を提供すること
にある。
The present invention was made in order to solve the above-mentioned problems, and its purpose is to prevent the auxiliary equipment from starting during the remaining operation if the auxiliary equipment in operation in the auxiliary equipment system trips and the standby equipment fails to start. Auxiliary equipment system control for a power generation plant that can reliably prevent all power generation units from stopping due to overload of the auxiliary equipment, and allow at least some of the operating power generation units to continue operating in good condition. The goal is to provide equipment.
上記の目的を達成するために本発明では、複数
の発電ユニツトに対して複数台の部分容量の補機
が共通設備として存在し、ある補機の異常による
トリツプに備えて予備機を自動起動するようにし
た発電プラントの補機系統制御装置において、各
補機の運転状態と、予備機の起動の必要性を判別
するための補機系統の主要パラメータと、各発電
ユニツトの運転状態とを夫々入力とし、これらの
条件に基づいて、各補機から各発電ユニツトへの
各供給ラインを選択的にしや断または最低流量に
絞り込む信号、および選択された発電ユニツトを
トリツプまたは停止させる信号を出力するユニツ
ト選択しや断手段を備えて構成している。
In order to achieve the above object, in the present invention, a plurality of partial capacity auxiliary machines exist as common equipment for a plurality of power generation units, and a standby machine is automatically activated in case of a trip due to an abnormality in a certain auxiliary machine. In the auxiliary equipment system control system of a power generation plant, the main parameters of the auxiliary equipment system for determining the operating status of each auxiliary equipment, the necessity to start up the standby equipment, and the operating status of each power generation unit are individually controlled. and, based on these conditions, output a signal that selectively cuts off or throttles each supply line from each auxiliary machine to each power generation unit to the lowest flow rate, and a signal that trips or stops the selected power generation unit. It is equipped with unit selection and disconnection means.
以下、本発明の一実施例について図面を参照し
て説明する。第１図は、本発明による軸冷系統制
御装置の構成例を示すものであり、第２図と同一
部分には同一符号を付してその説明は省略し、こ
こでは異なる部分についてのみ述べる。
An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows an example of the configuration of a shaft cooling system control device according to the present invention. The same parts as in FIG. 2 are given the same reference numerals, and the explanation thereof will be omitted, and only the different parts will be described here.
第１図において、１９は前述の軸冷系統制御装
置１４内に備えられたユニツト選択しや断回路
で、前述の各軸冷ポンプ１〜３の運転状態と、予
備機の起動の必要性を判別するための補機系統の
主要パラメータと、前記各発電ユニツト９〜１２
の運転状態とを夫々入力とし、これらの条件に基
づいて、上記各軸冷ポンプ１〜３から各発電ユニ
ツト９〜１２への供給ラインに設けられた軸冷水
しや断弁５〜８を全閉（しや断）または最低流量
に絞り込む信号、および必要に応じて上記選択さ
れた発電ユニツト９〜１２をトリツプまたは停止
させる信号を出力するものである。 In FIG. 1, reference numeral 19 is a unit selection circuit provided in the shaft cooling system control device 14, which indicates the operating status of each of the shaft cooling pumps 1 to 3 and the need to start up the standby pumps. Main parameters of the auxiliary system for determination and each of the power generation units 9 to 12
Based on these conditions, all of the shaft chilled water valves 5 to 8 installed in the supply lines from each of the shaft cooling pumps 1 to 3 to each of the power generation units 9 to 12 are input. It outputs a signal to close or reduce the flow rate to the lowest flow rate, and a signal to trip or stop the selected power generating units 9 to 12 as necessary.
かかる構成の軸冷系統制御装置１４Ａにおい
て、いま運転中の２台の軸冷ポンプのうち１台が
トリツプした後に、起動停止制御回路１５による
前述したような予備機起動が何らかの原因より行
なえなかつた場合には、ユニツト選択しや断回路
１５が動作して発電ユニツト９〜１２のうちから
50％容量相当の発電ユニツトが選択される。第１
図の例では軸冷ポンプ１台が50％容量であり、４
つの各発電ユニツト９〜１２の定格軸冷水容量が
等しければ２ユニツトが選択されることになる。
この場合、発電ユニツトの選択に際しては停止中
のものを最優先とし、以下停止操作中のもの、起
動中のもの、通常運転中のものの順に優先度を低
くする。このようにして選択された発電ユニツト
については、各発電ユニツト９〜１２への軸冷水
の供給ラインに設けられた軸冷水しや断弁５〜８
によつて軸冷水の急速しや断が行なわれ、かつ選
択された発電ユニツトが停止中でない場合は当該
発電ユニツトに対するトリツプ指令信号が出力さ
れることになる。 In the shaft cooling system control device 14A having such a configuration, after one of the two shaft cooling pumps currently in operation trips, the start/stop control circuit 15 is unable to start the standby unit as described above for some reason. In this case, the unit selection circuit 15 operates and one of the power generating units 9 to 12 is activated.
A power generation unit corresponding to 50% capacity is selected. 1st
In the example shown, one shaft-cooled pump has a capacity of 50%, and 4
If the rated shaft chilled water capacities of the two power generating units 9 to 12 are equal, two units will be selected.
In this case, when selecting a power generation unit, the highest priority is given to the one that is stopped, and then the priority is given to the one that is being stopped, the one that is starting up, and the one that is in normal operation. For the power generation units selected in this way, the shaft cold water valves 5 to 8 installed in the shaft cold water supply lines to the respective power generation units 9 to 12 are selected.
When the shaft cold water is rapidly cut off and the selected power generation unit is not stopped, a trip command signal is outputted to the selected power generation unit.
従つて、このように構成された軸冷系統制御装
置１４Ａでは、運転中の２台の軸冷ポンプのうち
１台がトリツプした後、何らかの理由で予備機が
起動できなかつた場合でも、残つた１台が過負荷
状態となる前に軸冷系統の一部を切り離す事によ
り、軸冷ポンプが全台数トリツプといつたような
事態に至るのを回避することができる。またこの
際、軸冷系統のしや断は運転中の発電ユニツトを
極力残す方向で行なわれるため、電力系統へ与え
る影響も比較的小さくて済む、さらに、軸冷水の
供給がしや断される発電ユニツトについては運転
中であればトリツプされるため、機器に与えるダ
メージも極めて少なくて済むことになる。 Therefore, in the shaft cooling system control device 14A configured as described above, even if the standby pump cannot be started for some reason after one of the two shaft cooling pumps in operation trips, the remaining pump is not activated. By disconnecting part of the shaft cooling system before one unit becomes overloaded, it is possible to avoid a situation where all shaft cooling pumps trip. In addition, at this time, the shaft cooling system is disconnected in such a way as to leave as many generating units in operation as possible, so the impact on the power system is relatively small.Furthermore, the supply of shaft cooling water is quickly cut off. Since the power generation unit is tripped while it is in operation, there is very little damage to the equipment.
上述したように本実施例の軸冷系統制御装置に
よれば、４つの発電ユニツト９〜１２に対して３
台の部分容量の軸冷ポンプ１〜３が共通設備とし
て存在し、１台の軸冷ポンプがトリツプした後に
予備機の自動起動が行なえなかつた際に、残つた
運転中の軸冷ポンプが過負荷となる事により起こ
り得る全発電ユニツト９〜１２の停止を確実に防
止し、運転中の発電ユニツトの少なくとも一部を
健全なまま運転継続させることができるため、電
力系統に与える影響が極めて小さくて済む。ま
た、軸冷ポンプサービスの供給を断たれる発電ユ
ニツトについては同時にトリツプまたは停止操作
が行なわれるため、機器に対する影響を小さくす
るようにすることができる。 As described above, according to the shaft cooling system control device of this embodiment, three
When axial cooling pumps 1 to 3 of partial capacity exist as common equipment, and when one axial cooling pump trips and the standby unit cannot be automatically started, the remaining operating axial cooling pump is overloaded. Since it is possible to reliably prevent all power generation units 9 to 12 from stopping, which could occur due to a load, and to allow at least some of the power generation units in operation to continue operating in good condition, the impact on the power system is extremely small. It's done. Further, since the power generation unit whose supply of shaft cooling pump service is cut off is simultaneously tripped or stopped, the influence on the equipment can be reduced.
尚、上記実施冷における軸冷水しや断弁５〜８
としては、各発電ユニツト９〜１２に設けられた
軸冷水の圧力調整弁を代用してこれを強制的に閉
するようにしても良い。 In addition, in the above-mentioned cooling, the shaft cooling water valves 5 to 8
Alternatively, the shaft chilled water pressure regulating valves provided in each of the power generating units 9 to 12 may be substituted to forcibly close the valves.
また、発電ユニツトの特性によつては、選択さ
れた発電ユニツトの軸冷水の供給を安全にしや断
するのではなく、最低流量に絞り込む方法もとり
得るし、また選択された発電ユニツトが運転中の
場合にトリツプするのではなく、停止操作を開始
するようにすることも考えられる。 Furthermore, depending on the characteristics of the power generation unit, instead of safely cutting off the supply of shaft cold water to the selected power generation unit, it may be possible to limit the flow to the lowest flow rate, or if the selected power generation unit is in operation. It is also conceivable to start a stop operation instead of tripping when a problem occurs.
さらに、予備機である軸冷ポンプが起動されな
かつた場合に選択しや断を行なう発電ユニツト数
を予め決めておくのではなく、軸冷水圧力が一定
の範囲以下にある限り時間遅れをもつて次々にト
リツプを行なわせるようにすることもできる。 Furthermore, instead of predetermining the number of power generating units that will be selected or disconnected when the standby shaft cooling pump is not started, a time delay is applied as long as the shaft cooling water pressure is below a certain range. It is also possible to make the trips occur one after another.
さらにまた、上記実施例では補機系統として軸
冷系統を例にとつて説明を行なつたが、同様の制
御を他の補機系統についても適用することができ
るものである。 Furthermore, although the above embodiment has been described using the shaft cooling system as an example of the auxiliary system, similar control can be applied to other auxiliary systems as well.
その他、本発明はその要旨を変更しない範囲
で、種々に変形して実施することができるもので
ある。 In addition, the present invention can be modified and implemented in various ways without changing the gist thereof.
［発明の効果］
以上説明したように本発明によれば、複数の発
電ユニツトに対して複数台の部分容量の補機が共
通設備として存在し、ある補機の異常によるトリ
ツプに備えて予備機を自動起動するようにした発
電プラントの補機系統制御装置において、各補機
の運転状態と、予備機の起動の必要性を判別する
ための補機系統の主要パラメータと、各発電ユニ
ツトの運転状態とを夫々入力とし、これらの条件
に基づいて、各補機から各発電ユニツトへの各供
給ラインを選択的にしや断または最低流量に絞り
込む信号、および選択された発電ユニツトをトリ
ツプまたは停止させる信号を出力するユニツト選
択し断手段を備えるようにしたので、補機系統に
おいて運転中のある補機がトリツプした後に予備
機が起動しなかつた場合に、残りの運転中の補機
が過負荷となることにより起り得る全発電ユニツ
トの停止を確実に防止し、運転中の発電ユニツト
の少なくとも一部を健全なまま運転継続させるこ
とができ、しかも機器に対する影響を小さくする
ことが可能な極めて信頼性の高い発電プラントの
補機系統制御装置が提供できる。[Effects of the Invention] As explained above, according to the present invention, a plurality of partial capacity auxiliary machines exist as common equipment for a plurality of power generation units, and a spare machine is installed in case of a trip due to an abnormality in a certain auxiliary machine. In the auxiliary system control system of a power generation plant that automatically starts the main parameters of the auxiliary system to determine the operating status of each auxiliary machine and the necessity of starting the standby machine, and the operation of each power generation unit. condition and, based on these conditions, a signal to selectively cut off each supply line from each auxiliary machine to each power generation unit or reduce the flow rate to the lowest flow rate, and to trip or stop the selected power generation unit. Since it is equipped with means for selecting and disconnecting the unit that outputs the signal, if the standby machine does not start after one running auxiliary machine trips in the auxiliary system, the remaining running auxiliary machines will not be overloaded. This is an extremely reliable system that can reliably prevent all power generation units from shutting down, which could occur due to a problem, and allow at least some of the power generation units in operation to continue operating in good condition, while minimizing the impact on equipment. A power plant auxiliary system control device with high performance can be provided.
第１図は本発明の一実施例を示す構成図、第２
図は従来の軸冷系統の一例を示す構成図である。
１，２，３……軸冷ポンプ、４……圧力スイツ
チ、５，６，７，８……軸冷水しや断弁、９，１
０，１１，１２……発電ユニツト、１３……軸冷
水冷却器、１４，１４Ａ……軸冷系統制御装置、
１５……軸冷ポンプ起動停止制御回路、１６，１
７，１８……軸冷ポンプ制御スイツチ、１９……
ユニツト選択しや断回路。
FIG. 1 is a configuration diagram showing one embodiment of the present invention, and FIG.
The figure is a configuration diagram showing an example of a conventional shaft cooling system. 1, 2, 3... Shaft-cooled pump, 4... Pressure switch, 5, 6, 7, 8... Shaft-cooled water valve disconnection, 9, 1
0, 11, 12...Power generation unit, 13...Shaft chilled water cooler, 14, 14A...Shaft cooling system control device,
15...Shaft cooling pump start/stop control circuit, 16,1
7, 18... Shaft cooling pump control switch, 19...
Unit selection or circuit disconnection.
Claims (1)
量の補機が共通設備として存在し、ある補機の異
常によるトリツプに備えて予備機を自動起動する
ようにした発電プラントの補機系統制御装置にお
いて、 前記各補機の運転状態と、前記予備機の起動の
必要性を判別するための補機系統の主要パラメー
タと、前記各発電ユニツトの運転状態とを夫々入
力とし、これらの条件に基づいて、前記各補機か
ら各発電ユニツトへの各供給ラインを選択的にし
や断または最低流量に絞り込む信号、および前記
選択された発電ユニツトをトリツプまたは停止さ
せる信号を出力するユニツト選択しや断手段を備
えて成ることを特徴とする発電プラントの補機系
統制御装置。[Scope of Claims] 1. A power generation plant in which a plurality of partial capacity auxiliary machines exist as common equipment for a plurality of power generation units, and a standby machine is automatically started in case of a trip due to an abnormality in a certain auxiliary machine. In the auxiliary system control device, the operating state of each of the auxiliary machines, main parameters of the auxiliary system for determining the necessity of starting the standby machine, and the operating state of each of the power generation units are input. , based on these conditions, output a signal to selectively cut off or reduce the flow rate to the minimum flow rate of each supply line from each auxiliary machine to each power generation unit, and a signal to trip or stop the selected power generation unit. An auxiliary equipment system control device for a power generation plant, characterized in that it comprises a unit selection and disconnection means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60164618A JPS6225831A (en) | 1985-07-25 | 1985-07-25 | Accesory system controller for power generation plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60164618A JPS6225831A (en) | 1985-07-25 | 1985-07-25 | Accesory system controller for power generation plant |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6225831A JPS6225831A (en) | 1987-02-03 |
| JPH0564527B2 true JPH0564527B2 (en) | 1993-09-14 |
Family
ID=15796617
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60164618A Granted JPS6225831A (en) | 1985-07-25 | 1985-07-25 | Accesory system controller for power generation plant |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6225831A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2588745B2 (en) * | 1988-03-28 | 1997-03-12 | 東芝機械株式会社 | Cleaning equipment |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5923250A (en) * | 1982-07-29 | 1984-02-06 | Dainippon Pharmaceut Co Ltd | Kit and method for measuring activity of kallikrein |
| JPS59201638A (en) * | 1983-04-28 | 1984-11-15 | 株式会社東芝 | Output controller of composite generating plant |
-
1985
- 1985-07-25 JP JP60164618A patent/JPS6225831A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5923250A (en) * | 1982-07-29 | 1984-02-06 | Dainippon Pharmaceut Co Ltd | Kit and method for measuring activity of kallikrein |
| JPS59201638A (en) * | 1983-04-28 | 1984-11-15 | 株式会社東芝 | Output controller of composite generating plant |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6225831A (en) | 1987-02-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101413520B1 (en) | Fault protection system for a power system of dynamically positioned vessel | |
| US5158436A (en) | Pump with speed controller responsive to temperature | |
| JP5286238B2 (en) | Water supply device and control method of water supply device | |
| US7800875B2 (en) | Multi-level electronic protection system providing safe fault recovery for multiple digital control outputs | |
| JP4431519B2 (en) | Reactor coolant recirculation pump power supply | |
| JP2006009805A (en) | Turbomachinery driving device and its control method | |
| JPH0564527B2 (en) | ||
| JPH1113413A (en) | Space machine starting system for auxiliary machine of power plant | |
| JP2007139224A (en) | Air conditioner | |
| JP2000227498A (en) | Nuclear reactor control device | |
| JP3005504B2 (en) | Water supply system | |
| JP2509631B2 (en) | Pump controller | |
| JPH05312303A (en) | Water supply control device | |
| JPS6139046Y2 (en) | ||
| JPH0641350U (en) | Power supply control device | |
| KR19990071337A (en) | Nuclear power plant and its internal system command signal generation method | |
| JPS63110916A (en) | Generator failure analyzer | |
| JP2000204906A (en) | Overload preventing device for transmission line capacity in thermal power plant | |
| JPH03284197A (en) | Control device for prime mover of generator | |
| JP2815591B2 (en) | Recirculation pump protector | |
| JP2519267B2 (en) | Load runback control method for boiler plant | |
| JPS61125634A (en) | System for monitoring and controlling abnormality | |
| JPH0737792B2 (en) | Control device for the number of pumps operating | |
| JPH06194494A (en) | Water supply controller for nuclear reactor | |
| JPH06289174A (en) | Output control for nuclear reactor and device therefor |