JPS59231104A - Controlling system of feed water pump in power plant - Google Patents
Controlling system of feed water pump in power plantInfo
- Publication number
- JPS59231104A JPS59231104A JP10532883A JP10532883A JPS59231104A JP S59231104 A JPS59231104 A JP S59231104A JP 10532883 A JP10532883 A JP 10532883A JP 10532883 A JP10532883 A JP 10532883A JP S59231104 A JPS59231104 A JP S59231104A
- Authority
- JP
- Japan
- Prior art keywords
- steam
- control signal
- feed water
- turbine
- power plant
- 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D17/00—Regulating or controlling by varying flow
- F01D17/20—Devices dealing with sensing elements or final actuators or transmitting means between them, e.g. power-assisted
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K9/00—Plants characterised by condensers arranged or modified to co-operate with the engines
- F01K9/02—Arrangements or modifications of condensate or air pumps
- F01K9/023—Control thereof
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K11/00—Plants characterised by the engines being structurally combined with boilers or condensers
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Control Of Turbines (AREA)
- Control Of Velocity Or Acceleration (AREA)
Abstract
Description
【発明の詳細な説明】
〔発明の利用分野〕
本発明は発電所の給水ポンプ制御システムに係シ、特に
、発電機を駆動する主蒸気タービンの駆動源となる蒸気
を発生する蒸気発生装置に給水する給水ポンプを発電所
の運転状態に応じて効率良く制御するのに好適な発電所
の給水ポンプ制御システムに関する。[Detailed Description of the Invention] [Field of Application of the Invention] The present invention relates to a feed water pump control system for a power plant, and particularly to a steam generator that generates steam that is a driving source for a main steam turbine that drives a generator. The present invention relates to a water supply pump control system for a power plant that is suitable for efficiently controlling a water supply pump that supplies water according to the operating state of the power plant.
火力発電設備におけるボイラ給水、あるいは原子力発電
設備における原子炉給水ポンプは、発電機を駆動する主
蒸気タービンの駆動源となる蒸気が供給され、この蒸気
圧に応じて作動する副蒸気タービンによって駆動される
ことが多い。この副蒸気タービンを用いて給水ポンプを
作動するシステムとしては、例えば、副蒸気タービンの
回転速度を検出し、この検出値と蒸気発生装置に対する
給水流量の要求値に対応づけられた副蒸気タービン回転
速度についての設定値とを比較してその偏差を求め、こ
の偏差を抑制する蒸気圧制御信号を出力する制御部と、
副蒸気タービンに供給される蒸気の圧力を、蒸気圧制御
信号により可変する蒸気圧調整部と、を備え、給水ポン
プの作動に応じた流量の水を蒸気発生装置に給水するよ
りに構成されたものが提案されている。このシステムは
、副蒸気タービンの回転速度を設定値に維持することに
より所望の給水流量を得ることができる。Boiler feed water in thermal power generation equipment or reactor feed water pumps in nuclear power generation equipment are supplied with steam that is the driving source for the main steam turbine that drives the generator, and are driven by an auxiliary steam turbine that operates according to the steam pressure. Often. As a system for operating a feed water pump using this sub-steam turbine, for example, the rotation speed of the sub-steam turbine is detected, and the sub-steam turbine rotates in correspondence with this detected value and the required value of the feed water flow rate for the steam generator. a control unit that compares the speed with a set value to determine a deviation thereof and outputs a steam pressure control signal to suppress this deviation;
A steam pressure adjustment unit that varies the pressure of steam supplied to the auxiliary steam turbine using a steam pressure control signal, and is configured to supply water to the steam generator at a flow rate corresponding to the operation of the water supply pump. something is proposed. This system can obtain a desired feedwater flow rate by maintaining the rotational speed of the secondary steam turbine at a set value.
又、前記システムにおいては、副蒸気タービンが蒸気圧
に応じて給水ポンプを作動するように構成されているの
で、抽気供給系と主蒸気供給系の２系統の蒸気を副蒸気
タービンに供給すると共に、これらの２系統に配設され
た加減弁の開度を、給水流量の要求値に応じて調整して
副蒸気タービンの回転速度を設定値に維持するように構
成されている。In addition, in the above system, the auxiliary steam turbine is configured to operate the water supply pump according to the steam pressure, so that steam from two systems, the extraction supply system and the main steam supply system, is supplied to the auxiliary steam turbine and The opening degree of the control valves disposed in these two systems is adjusted according to the required flow rate of water supply to maintain the rotational speed of the auxiliary steam turbine at a set value.
ところで、発電所においては、送電線系統などに事故が
生じた場合には、発電ユニットを系統から切ｐ離し、瞬
時に発電出力を通常運転時の数チに和尚する所内用補機
電力まで低下させるいわゆるｐａｓｔ Ｃｕｔ Ｂａｃ
ｋ （以下ＰＣＢと称する）運転が行なわれている。発
電所の運転がＰＣＢ運転に移行すると、主蒸気タービン
も短時間無負荷運転状態となるので、ボイラに対する給
水、燃料、空気などのボイラ入力をボイラ最低負荷まで
急速に絞）込んだ設定を行ない、ユニットを所内単独負
荷運転に移行させることが行なわれる。このＰＣＢ運転
に移行すると、主蒸気タービンを駆動する駆動源となる
蒸気の圧力も急激に低下するため、主蒸気タービンの抽
気の圧力も急激に低下する。そのため、通常抽気を駆動
源としている副蒸気タービンは、ＰＣＢ運転時には、主
蒸気を駆動源とする必要があめ。即ち、副蒸気タービン
は通常低圧の抽気によって駆動することができるが、Ｐ
ＣＢ運転時には、高圧蒸気が供給される主蒸気供給系か
らの蒸気によって駆動しなければ、副蒸気タービンの回
転速度が低下し、所望の給水流量を得ることができない
。By the way, in a power plant, if an accident occurs in the power transmission line system, the power generation unit is disconnected from the grid, and the power generation output is instantly reduced to the power of the auxiliary equipment for use in the station, which is just a few meters below normal operation. The so-called past cut back
k (hereinafter referred to as PCB) operation is being performed. When the power plant operation shifts to PCB operation, the main steam turbine will also be in a no-load operation state for a short period of time, so the boiler inputs such as water supply, fuel, and air to the boiler should be rapidly reduced to the lowest boiler load. , the unit is shifted to in-house single load operation. When transitioning to this PCB operation, the pressure of the steam that is the drive source for driving the main steam turbine also drops rapidly, so the pressure of the extracted air of the main steam turbine also drops rapidly. Therefore, the auxiliary steam turbine, which normally uses extraction air as its driving source, needs to use main steam as its driving source during PCB operation. That is, although the auxiliary steam turbine can normally be driven by low-pressure bleed air, P
During CB operation, unless the sub-steam turbine is driven by steam from the main steam supply system to which high-pressure steam is supplied, the rotational speed of the sub-steam turbine decreases and the desired water supply flow rate cannot be obtained.
しかし、前記システムにおいては、制御部で演算された
蒸気圧制御信号を蒸気圧調整部に供給し、副蒸気タービ
ンに供給される蒸気の圧力を調整するように構成されて
いたので、発電所の運転がＰＣＢ運転に移行したとき、
このＰＣＢ運転に対応した蒸気圧制御信号を演算するの
に時間がかがシ、給水流量の要求値に即応することが困
難であった。However, in the above system, the steam pressure control signal calculated by the control unit is supplied to the steam pressure adjustment unit to adjust the pressure of the steam supplied to the auxiliary steam turbine. When operation shifts to PCB operation,
It took a long time to calculate the steam pressure control signal corresponding to this PCB operation, and it was difficult to immediately respond to the required value of the water supply flow rate.
本発明は、前記課題に鑑みて為されたものであシ、その
目的は、給水流量の要求値に即応した給水流量の制御が
行なえる発電所の給水ポンプ制御システムを提供するこ
とにある。The present invention has been made in view of the above-mentioned problems, and an object thereof is to provide a water supply pump control system for a power plant that can control the water supply flow rate in immediate response to the requested value of the water supply flow rate.
前記目的を達成するために、本発明は、発電機を駆動す
る主蒸気タービンの駆動源となる蒸気が蒸気発生装置か
ら供給されこの蒸気に応じて給水ポンプを作動する副蒸
気タービンの回転速度を検出し、この検出値と蒸気発生
装置に対する給水流量の要求値に対応づけられた副蒸気
タービンの回転速度についての設定値とを比較してその
偏差を求め、この偏差を抑制する蒸気圧制御信号を出力
する制御部と、副蒸気タービンに供給される蒸気の圧力
を蒸気圧制御信号によシ可変する蒸気圧調整部を備え、
給水ポンプの作動に応じた流量の水を蒸気発生装置に給
水する発電所の給水ポンプ制御システムにおいて、前記
制御部に発電所の発電出力急落時における蒸気発生装置
への給水流量に対応づけて設定された予備の蒸気圧制御
信号を発生する予備蒸気圧制御信号発生部を設け、発電
所の発電出力急落時、副蒸気タービンを回転速度に基づ
く蒸気圧制御信号に代えて予備の蒸気圧制御信号を蒸気
圧調整部に供給するようセしたことを特徴とする。In order to achieve the above object, the present invention provides a system in which steam, which serves as a driving source for a main steam turbine that drives a generator, is supplied from a steam generator, and the rotational speed of a sub-steam turbine that operates a feed water pump in accordance with the steam is supplied from a steam generator. A steam pressure control signal that detects the detected value and compares this detected value with a set value for the rotational speed of the auxiliary steam turbine that is associated with the required value of the feed water flow rate for the steam generator to determine the deviation, and suppresses this deviation. and a steam pressure adjustment unit that varies the pressure of steam supplied to the auxiliary steam turbine in accordance with a steam pressure control signal,
In a water supply pump control system for a power plant that supplies water to a steam generator at a flow rate corresponding to the operation of the water supply pump, the control unit is set in association with the flow rate of water to be supplied to the steam generator when the power generation output of the power plant suddenly drops. A standby steam pressure control signal generator is provided to generate a standby steam pressure control signal based on the rotational speed of the auxiliary steam turbine when the power generation output of the power plant suddenly drops. is characterized in that it is configured to supply the vapor pressure to the steam pressure adjustment section.
〔発明の実施例〕
以下、図面に基づいて本発明の好適な実施例を説明する
。[Embodiments of the Invention] Hereinafter, preferred embodiments of the present invention will be described based on the drawings.
第１図には、本発明の好適な実施例の構成が示されてい
る。FIG. 1 shows the configuration of a preferred embodiment of the present invention.
本実施例におけるシステムは、第１図例示されるように
、蒸気発生装置（図示省略）から供給される蒸気圧に応
じて給水ポンプ１０を作動する副蒸気タービン１２の回
転速度を検出し、この検出値と蒸気発生装置に対する給
水流量の要求値に対応づけられた副蒸気タービン回転速
度についての設定値とを比較してその偏差を求め、この
偏差を抑制する蒸気圧制御信号を出力する制御部１４と
、副蒸気タービン１２に供給される蒸気の圧力を、蒸気
圧制御信号によシ可変する蒸気圧調整部１６を備え、給
水ポンプ１０の作動に応じ九流量の水を蒸気発生装置に
給水することができる。As illustrated in FIG. 1, the system in this embodiment detects the rotational speed of the auxiliary steam turbine 12 that operates the feed water pump 10 according to the steam pressure supplied from a steam generator (not shown), and A control unit that compares the detected value with a set value for the auxiliary steam turbine rotational speed that is associated with the required value of the feed water flow rate for the steam generator, determines the deviation, and outputs a steam pressure control signal to suppress this deviation. 14, and a steam pressure adjustment unit 16 that varies the pressure of steam supplied to the auxiliary steam turbine 12 according to a steam pressure control signal, and supplies water at a flow rate of nine to the steam generator according to the operation of the water supply pump 10. can do.
即ち、制御部１４は、速度検出器１８．２０を有し、給
水ポンプ１０、副蒸気タービン１２の駆動軸に連結され
た歯車２２の回転数を、速度検出器１８．２０で検出し
、この検出値を副蒸気タービン１２の回転速度信号とし
て検出するように構成されている。速度検出器１８．２
０による検出信号はそれぞれ速度信号変換器２４．２６
を介して真値選択器２８に供給される。真値選択器２８
は、２つの回転速度信号のうち真値とされる値を選択す
る。即ち、２信号の差が許容値以内であれば高値を真値
とし、差が許容値以上であれば変化率の小さい方を真値
とする処理を行ない、真値を偏差演算器３０、給水制御
装置３２に供給する。That is, the control unit 14 has a speed detector 18.20, which detects the rotational speed of the gear 22 connected to the drive shaft of the feed water pump 10 and the auxiliary steam turbine 12, and It is configured to detect the detected value as a rotational speed signal of the auxiliary steam turbine 12. Speed detector 18.2
Detection signals due to 0 are detected by speed signal converters 24 and 26 respectively.
is supplied to the true value selector 28 via. True value selector 28
selects the true value of the two rotational speed signals. That is, if the difference between the two signals is within the tolerance value, the higher value is determined to be the true value, and if the difference is greater than or equal to the tolerance value, the one with the smaller rate of change is determined to be the true value. is supplied to the control device 32.
給水制御装置３２は、真値選択器２８からの信号を、蒸
気発生装置に対する給水流量の要求値に対応づけられた
副蒸気タービン回転速度についての設定値に変換し、こ
の信号を偏差演算器３０に供給する。偏差演算器３０は
、真値選択器２８と給水制御装置３２からの出力信号と
を比較してその偏差を求め、比例積分演算器３４に供給
する。比例積分演算器３４は、偏差演算器３０からの偏
差を抑制する演算を行ない、この演算値に従った蒸気圧
制御信号を切換器３６を介して蒸気圧調整部１６に供給
する。The feed water control device 32 converts the signal from the true value selector 28 into a setting value for the auxiliary steam turbine rotation speed that is associated with the requested value of the feed water flow rate for the steam generator, and converts this signal into a set value for the auxiliary steam turbine rotation speed. supply to. The deviation calculator 30 compares the output signal from the true value selector 28 and the water supply control device 32 to find the deviation, and supplies it to the proportional-integral calculator 34 . The proportional-integral calculator 34 performs calculations to suppress the deviation from the deviation calculator 30, and supplies a steam pressure control signal in accordance with this calculated value to the steam pressure adjustment section 16 via the switch 36.
蒸気圧調整部１６は、増幅器３８、電気−油圧変換器４
０．油圧サーボ４２、リンク機構４４、低圧加減弁４６
、高圧加減弁４８から構成されている。蒸気圧制御信号
が増幅器３８に供給されると、この信号は、増幅器３８
で増幅されたあと電気−油圧変換６４０に供給され油圧
サーボレベルに変換される。そして、油圧サーボ４２が
、油圧サーボレベルに従ってリンク機構４４を作動する
ことによシ低圧加減弁４６、高圧加減弁４８の開度が制
御され、抽気供給系５０、主蒸気供給系５２から副蒸気
タービン１２に供給される蒸気の圧力が可変される。高
圧加減弁４８は、低圧加減弁４６の弁が全開となったあ
と開くように構成されているので、副蒸気タービン１２
に供給される蒸気量は、油圧サーボレベルに応じて第２
図に示されるような関係となる。即ち、油圧サーボレベ
ルが０−〜ａ％の範囲では低圧加減弁４６の開度が０チ
〜１００チの開度となシ、そのときの蒸気量が特性Ａに
従って変化する。又、油圧サーボレベルがａ％を越える
と高圧加減弁４８の弁が開らき始め、油圧サーボレベル
がａ％〜１００チの範囲で高圧加減弁４８の開度がθ％
〜１００チとなシ、蒸気量が特性Ｂに従って変化する。The steam pressure adjustment section 16 includes an amplifier 38 and an electro-hydraulic converter 4.
0. Hydraulic servo 42, link mechanism 44, low pressure regulating valve 46
, and a high pressure regulating valve 48. When the vapor pressure control signal is provided to amplifier 38, this signal is
After being amplified, the signal is supplied to an electro-hydraulic converter 640 and converted to a hydraulic servo level. The hydraulic servo 42 operates the link mechanism 44 in accordance with the hydraulic servo level, thereby controlling the opening degrees of the low pressure regulating valve 46 and the high pressure regulating valve 48. The pressure of steam supplied to the turbine 12 is varied. The high pressure regulating valve 48 is configured to open after the low pressure regulating valve 46 is fully opened, so that the auxiliary steam turbine 12
The amount of steam supplied to the second
The relationship is as shown in the figure. That is, when the hydraulic servo level is in the range of 0% to a%, the opening degree of the low pressure regulating valve 46 is between 0 degrees and 100 degrees, and the amount of steam at that time changes according to characteristic A. Also, when the hydraulic servo level exceeds a%, the high pressure regulating valve 48 starts to open, and when the hydraulic servo level is in the range of a% to 100 inches, the opening degree of the high pressure regulating valve 48 becomes θ%.
~100 cm, the amount of steam changes according to characteristic B.
そして、油圧サーボレベルが１００チのときには、蒸気
量Ｃ十蒸気量りの蒸気量が副蒸気タービン１２に供（９
）
給される。When the hydraulic servo level is 100, the amount of steam equal to the amount of steam C ten is supplied to the auxiliary steam turbine 12 (9
) will be paid.
ここで、本発明は、発電所の運転がＰＣＢ運転に移行し
たときの給水流量の要求値に即応することを特徴とする
ところから、本実施例における制御部１４には、発電所
の発電出力急落時いわゆるＰＣＢ運転時における蒸気発
生装置への給水流量に対応づけて設定された予備の蒸気
圧制御信号を発生する予備蒸気圧制御信号発生部５４が
設けられておシ、この予備の蒸気圧制御信号を切換器３
６に供給し、発電所の発電出力急落時、比例積分演算器
３４から出力される蒸気圧制御信号に代えて予備の蒸気
圧制御信号を蒸気圧調整部１６に供給するように構成さ
れている。Here, since the present invention is characterized in that it immediately responds to the requested value of the water supply flow rate when the operation of the power plant shifts to PCB operation, the control unit 14 in this embodiment includes the power generation output of the power plant. A preliminary steam pressure control signal generating section 54 is provided which generates a preliminary steam pressure control signal set in correspondence with the water supply flow rate to the steam generator during sudden drop, so-called PCB operation. Control signal switch 3
6, and is configured to supply a preliminary steam pressure control signal to the steam pressure adjustment unit 16 in place of the steam pressure control signal output from the proportional-integral calculator 34 when the power generation output of the power plant suddenly drops. .
即ち、通常の運転時には、第３図に示されるように、切
換器３６がオンとなって比例積分演算器３４からの蒸気
圧制御信号が蒸気圧調整部１６に供給され、第２図に示
される特性Ａ、Ｂに応じた蒸気量が副蒸気タービン１２
に供給され、副蒸気タービンの回転速度が設定値に維持
される。一方、第２図の特性Ｅで示されるように、発電
所の運転（１０）
がＰＣＢ運転に移行して抽気供給系５０の蒸気量が低下
したときには、切換器３６がオフとなって予備蒸気圧制
御信号発生部５４から出力される予備の蒸気圧制御信号
が切換器３６−を介して蒸気圧調整部１６に供給される
。予備の蒸気圧制御信号はａ％以上の油圧サーボレベル
に対応して定められているので、発電所の運転がＦＯＲ
運転に移行したとき、副蒸気タービン１２の回転速度に
基づく蒸気圧制御信号の演算を行なうことなく、主蒸気
供給系５２からの蒸気を副蒸気タービン１２に供給する
ことができる。そのため、ＰＣＢ運転に移行しても副蒸
気タービン１２に供給される蒸気の圧力が急激に低下す
ることはなく、ＰＣＢ運転時に必要とされる給水流量を
確保することができる。That is, during normal operation, the switch 36 is turned on, as shown in FIG. The amount of steam corresponding to the characteristics A and B
is supplied to maintain the rotational speed of the auxiliary steam turbine at the set value. On the other hand, as shown by characteristic E in FIG. A preliminary steam pressure control signal output from the pressure control signal generation section 54 is supplied to the steam pressure adjustment section 16 via the switch 36-. The preliminary steam pressure control signal is determined in response to a hydraulic servo level of a% or higher, so the power plant operation is FOR
When operation starts, steam from the main steam supply system 52 can be supplied to the auxiliary steam turbine 12 without calculating a steam pressure control signal based on the rotational speed of the auxiliary steam turbine 12. Therefore, even if the PCB operation is shifted to, the pressure of the steam supplied to the auxiliary steam turbine 12 does not drop suddenly, and the water supply flow rate required during the PCB operation can be ensured.
以上説明したように、本発明によれば、発電所の発電出
力が急落して給水流量の要求値が急変したときでも、副
蒸気タービンの回転速度に・基づく蒸気圧制御信号を演
算することなく、副蒸気ター（１１）
ビンには高圧の蒸気が供給されるので、給水流量の要求
値に即応した制御が行なえるという優れた効果がある。As explained above, according to the present invention, even when the power generation output of the power plant suddenly drops and the required value of the feed water flow rate suddenly changes, there is no need to calculate the steam pressure control signal based on the rotational speed of the auxiliary steam turbine. Since high-pressure steam is supplied to the auxiliary steam turbine (11) bin, there is an excellent effect that control can be performed immediately in response to the required value of the water supply flow rate.
【図面の簡単な説明】
第１図は本発明の一実施例を示すシステム構成図、第２
図は油圧サーボレベルと蒸気量との関係を示す線図、第
３図の（ａ）〜（Ｃ）は本発明に係る作用を説明するた
めのタイムチャートである。
１０・・・給水ポンプ、１２・・・副蒸気タービン、１
４・・・制御部、１６・・・蒸気圧調整部、１８．２０
・・・速度検出器、３２・・・給水制御装置、３０・・
・偏差演算器、３４・・・比例積分演算器、３６・・・
切換器、４２・・・油圧サーボ、４６・・・低圧加減弁
、４８・・・高圧加減弁、５０・・・抽気供給系、５２
・・・主蒸気供給系、５４・・・予備蒸気圧制御信号発
生部。
代理人 弁理士 鵜沼辰之
（１２）
生２図
第３図[Brief Description of the Drawings] Fig. 1 is a system configuration diagram showing one embodiment of the present invention;
The figure is a diagram showing the relationship between the hydraulic servo level and the amount of steam, and FIGS. 3(a) to 3(C) are time charts for explaining the effects of the present invention. 10... Water supply pump, 12... Sub-steam turbine, 1
4... Control unit, 16... Steam pressure adjustment unit, 18.20
...Speed detector, 32...Water supply control device, 30...
- Deviation calculator, 34...Proportional-integral calculator, 36...
Switch, 42... Hydraulic servo, 46... Low pressure regulating valve, 48... High pressure regulating valve, 50... Bleed air supply system, 52
. . . Main steam supply system, 54 . . . Preliminary steam pressure control signal generation unit. Agent Patent Attorney Tatsuyuki Unuma (12) Life 2 Figure 3
Claims (1)
気が蒸気発生装置から供給されこの蒸気圧に応じて給水
ポンプを作動する副蒸気タービンの回転速度を検出し、
この検出値と蒸気発生装置に対する給水流量の要求値に
対応づけられた副蒸気タービン回転速度についての設定
値とを比較してその偏差を求め、この偏差を抑制する蒸
気圧制御信号を出力する制御部と、副蒸気タービンに供
給される蒸気の圧力を、蒸気圧制御信号によシ可変する
蒸気圧調整部と、を備え、給水ポンプの作動に応じた流
量の水を蒸気発生装置に給水する発電所の給水ポンプ制
御システムにおいて、前記制御部は、発電所の発電出力
急落時における蒸気発生装置への給水流量に対応づけて
設定された予備の蒸気圧制御信号を発生する予備蒸気圧
制御信号発生部を有し、発電所の発電出力急落時、副蒸
気タービンの回転速度に基づく蒸気圧制御信号に代えて
予備の蒸気圧制御信号を蒸気圧調整部に供給することを
特徴とする発電所の給水ポンプ制御システム。1. Detecting the rotational speed of the auxiliary steam turbine that operates the feed water pump according to the steam pressure supplied from the steam generator, which is the driving source of the main steam turbine that drives the generator,
Control that compares this detected value with a set value for the auxiliary steam turbine rotational speed that is associated with the required value of the feed water flow rate for the steam generator, determines the deviation, and outputs a steam pressure control signal to suppress this deviation. and a steam pressure adjustment section that varies the pressure of steam supplied to the auxiliary steam turbine according to a steam pressure control signal, and supplies water to the steam generator at a flow rate according to the operation of the water supply pump. In the feedwater pump control system for a power plant, the control unit generates a preliminary steam pressure control signal that is set in correspondence with the flow rate of water supplied to the steam generator when the power generation output of the power station suddenly drops. A power plant having a generating section, and supplying a backup steam pressure control signal to the steam pressure adjustment section in place of a steam pressure control signal based on the rotational speed of a sub-steam turbine when the power generation output of the power plant suddenly drops. water pump control system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10532883A JPS59231104A (en) | 1983-06-13 | 1983-06-13 | Controlling system of feed water pump in power plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10532883A JPS59231104A (en) | 1983-06-13 | 1983-06-13 | Controlling system of feed water pump in power plant |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59231104A true JPS59231104A (en) | 1984-12-25 |
| JPH0256481B2 JPH0256481B2 (en) | 1990-11-30 |
Family
ID=14404650
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10532883A Granted JPS59231104A (en) | 1983-06-13 | 1983-06-13 | Controlling system of feed water pump in power plant |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59231104A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2605046A1 (en) * | 1986-07-17 | 1988-04-15 | Skoda Kp | METHOD FOR CONTROLLING A TURBINE AND INSTALLATION FOR CARRYING OUT SAID METHOD |
| CN103397919A (en) * | 2013-08-13 | 2013-11-20 | 中国电力工程顾问集团华东电力设计院 | Feed pump system driven by straight condensing small turbine and speed-governed by power frequency generator and method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57144803A (en) * | 1981-03-04 | 1982-09-07 | Hitachi Ltd | Controller for feed water pump driving turbine |
-
1983
- 1983-06-13 JP JP10532883A patent/JPS59231104A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57144803A (en) * | 1981-03-04 | 1982-09-07 | Hitachi Ltd | Controller for feed water pump driving turbine |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2605046A1 (en) * | 1986-07-17 | 1988-04-15 | Skoda Kp | METHOD FOR CONTROLLING A TURBINE AND INSTALLATION FOR CARRYING OUT SAID METHOD |
| CN103397919A (en) * | 2013-08-13 | 2013-11-20 | 中国电力工程顾问集团华东电力设计院 | Feed pump system driven by straight condensing small turbine and speed-governed by power frequency generator and method |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0256481B2 (en) | 1990-11-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS6124601B2 (en) | ||
| JPS6253797B2 (en) | ||
| US6055945A (en) | Full range feedwater control system for pressurized water reactor steam generators | |
| JPS59231104A (en) | Controlling system of feed water pump in power plant | |
| JP2000297608A (en) | Control device for feed water pump of power station | |
| JPH0148366B2 (en) | ||
| JP3469685B2 (en) | Control method and control device for feed water pump turbine | |
| JPS61108811A (en) | Control system for water supply pump in power plant | |
| JPS61180812A (en) | Control system of feedwater pump for power station | |
| JPS61108810A (en) | Control system for water supply pump in power plant | |
| JP2531755B2 (en) | Water supply control device | |
| JPH073166B2 (en) | Control method for parallel operation of exhaust gas turbo generator and diesel generator | |
| JPH0122521B2 (en) | ||
| JP3166972B2 (en) | Power plant control method and apparatus, and power plant | |
| JPS6158903A (en) | Turbine controller for nuclear reactor | |
| JPH0743092B2 (en) | Steam turbine controller | |
| JPS622278B2 (en) | ||
| JPS61180811A (en) | Control system of feedwater pump for power station | |
| JPS58165507A (en) | Pressure controller of driving steam of turbine driving feed water pump | |
| JPS63162903A (en) | Steam turbine controller | |
| JPS6294702A (en) | Feed pump control system of power plant | |
| JPS6260603B2 (en) | ||
| JPS6215737B2 (en) | ||
| JPH0241720B2 (en) | ||
| JPH01216005A (en) | Turbine control device |