JPS62201396A - Water-level controller for pressurizer - Google Patents
Water-level controller for pressurizerInfo
- Publication number
- JPS62201396A JPS62201396A JP61043134A JP4313486A JPS62201396A JP S62201396 A JPS62201396 A JP S62201396A JP 61043134 A JP61043134 A JP 61043134A JP 4313486 A JP4313486 A JP 4313486A JP S62201396 A JPS62201396 A JP S62201396A
- Authority
- JP
- Japan
- Prior art keywords
- water level
- pressurizer
- flow rate
- full
- filling flow
- 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
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims description 112
- 238000001816 cooling Methods 0.000 claims description 17
- 239000000463 material Substances 0.000 claims description 14
- 238000000605 extraction Methods 0.000 claims description 13
- 239000002826 coolant Substances 0.000 description 14
- 239000012071 phase Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000008602 contraction Effects 0.000 description 2
- 239000000498 cooling water Substances 0.000 description 2
- 239000007791 liquid phase Substances 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
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】
〔産業上の利用分野）
本発明は加圧型原子力発電所等の加圧器に適用される加
圧器の水位制御装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a water level control device for a pressurizer applied to a pressurizer in a pressurized nuclear power plant or the like.
加圧型原子炉に連通する加圧器は、通常運転中、容偵の
約６０％が液１目で池は気相を（閃成しており、その運
転圧力を一定に保持し通常の負荷変化に伴う１次冷却材
の熱膨張および収縮による圧力変化を許容範囲内に制限
するとともにいかなる場合でも最高使用圧力を越えない
ように制御されている。During normal operation, the pressurizer connected to the pressurized reactor is in a state where approximately 60% of the reactor is in the liquid phase and the pond is in the gas phase. Pressure changes due to thermal expansion and contraction of the primary coolant accompanying this are limited to within an allowable range, and are controlled so as not to exceed the maximum working pressure under any circumstances.
ところで、加圧水型原子発電所の停止過程においては、
加圧器を通常水位から満水水位までもっていく操作を行
なうが、この操作は運転員が手動によって行われている
。そこで、この加圧器の満水操作は、１次冷却材の充填
流量を増加させて水位を上昇させている。By the way, during the shutdown process of a pressurized water nuclear power plant,
The pressurizer is moved from the normal water level to the full water level, but this operation is performed manually by the operator. Therefore, in this operation of filling the pressurizer with water, the filling flow rate of the primary coolant is increased to raise the water level.
ところが、この加圧器満水操作では、満水となる時点で
加圧器水位上昇率が高い場合、加圧器の圧力が急上昇し
てしまう。これは、第３図（ａ）（ｂ）に示すように満
水水位Ｌａの前では加圧器上部に気相があり圧力変動は
小さいが、満水となって気相が消滅した時点ｔａでは加
圧器は１次冷却水のみの単相となる。従って、この満水
の時点ｔａで１次冷却水を加圧器に送ると、加圧器内の
圧力は急上昇してしまう。However, in this pressurizer filling operation, if the pressurizer water level rise rate is high when the pressurizer becomes full, the pressure in the pressurizer will rise rapidly. As shown in Figure 3 (a) and (b), before the full water level La, there is a gas phase above the pressurizer and the pressure fluctuations are small, but at the time ta when the water is full and the gas phase disappears, the pressure changes. is a single phase with only primary cooling water. Therefore, if the primary cooling water is sent to the pressurizer at the time ta when the water is full, the pressure inside the pressurizer will rise rapidly.
そこで本発明は加圧器満水操作を自動化し、かつ満水時
における加圧器の圧力り上背を防止できる加圧器の本位
制ｉ！ｌ！装置を提供することを目的とする。Therefore, the present invention is a standard system for a pressurizer that automates the operation of filling the pressurizer with water and prevents pressure build-up of the pressurizer when it is filled with water. l! The purpose is to provide equipment.
（問題点を解決するための手段〕
本発明は上記問題点を解決し目的を達成するために次の
ような手段を講じたことを特徴としている。すなわち、
１次冷Ｗ材料温度、この１次冷却材料の充填流量および
抽出流量を受けて加圧器における水位を推定する水位推
定手段と、この水位推定手段により推定された水位と満
水水位とから満水時の水位上昇を停止する推定水位と満
水水位との差に比例した充填制御信号を求める充填流量
演算手段を備えたことを特徴としている。(Means for Solving the Problems) The present invention is characterized by taking the following measures to solve the above problems and achieve the objectives.
A water level estimation means for estimating the water level in the pressurizer based on the temperature of the primary cooling W material, the filling flow rate and the extraction flow rate of the primary cooling material, and a water level estimation means for estimating the water level in the pressurizer based on the temperature of the primary cooling W material, the filling flow rate and the extraction flow rate of the primary cooling material, and a water level estimation means for estimating the water level in the pressurizer based on the water level estimated by the water level estimation means and the full water level. The present invention is characterized by comprising a filling flow rate calculation means for calculating a filling control signal proportional to the difference between the estimated water level at which the water level rise is stopped and the full water level.
（作用〕
このような手段を講じたことにより、１次冷却材料温度
、この１次冷却材料の充填流量および抽出流量から加圧
器の水位を推定し、この水位推定値と満水水位とから満
水時における水位上昇を停止する推定水位と満水水位と
の差に比例した充填制御信号を演算して求めて充１ｔｌ
ｔ流ｍを制御する。(Operation) By taking such measures, the water level of the pressurizer can be estimated from the temperature of the primary cooling material, the filling flow rate and the extraction flow rate of this primary cooling material, and the water level at full water can be estimated from this estimated water level value and the full water level. A filling control signal proportional to the difference between the estimated water level that stops the water level rise and the full water level is calculated and filled to 1 tl.
Control the flow m.
以下１本発明の一実施例について図面を参照して説明す
る。An embodiment of the present invention will be described below with reference to the drawings.
第１図は加圧器の水位制御装置の全体構成図である。同
図において１は原子炉であり、２は蒸気発生器であり、
これら原子炉１と蒸気発生器２どの間には冷却器の循環
系３が配設されている。そして、この循環系３に１次冷
却材ポンプ４および加圧器５が設けられている。この加
圧器は、通常運転中、容積の約６０％が液相で他は気相
を構成しており、その運転圧力を一定に保持し通常の負
荷変化に伴う１次冷却材の熱膨張および収縮による圧力
変化つまり原子炉１、蒸気発生器２および１次冷却材ポ
ンプ４等の１次冷却系に含まれる各凶器での熱により１
次冷却材の体積変化を吸収して許容範囲内に制限すると
ともにいかなる場合でも最高使用圧力を越えないように
制御Ｉするものである。また、循環系３には１次冷却材
の充填ラインが設けられ、この充填ラインに充填流ｍ制
御信号６が設けられている。なお、循環ライン３には抽
出ラインが設けられている。FIG. 1 is an overall configuration diagram of a water level control device for a pressurizer. In the figure, 1 is a nuclear reactor, 2 is a steam generator,
A circulation system 3 of a cooler is disposed between the nuclear reactor 1 and the steam generator 2. This circulation system 3 is provided with a primary coolant pump 4 and a pressurizer 5. During normal operation, approximately 60% of the volume of this pressurizer is in the liquid phase and the rest is in the gas phase.The operating pressure is maintained constant and the thermal expansion of the primary coolant due to normal load changes is controlled. 1 due to pressure changes due to contraction, that is, heat from each weapon included in the primary cooling system such as the reactor 1, steam generator 2, and primary coolant pump 4.
This system absorbs changes in the volume of the coolant and limits it within an allowable range, and controls the pressure so that it does not exceed the maximum operating pressure under any circumstances. The circulation system 3 is also provided with a primary coolant filling line, and this filling line is provided with a filling flow m control signal 6. Note that the circulation line 3 is provided with an extraction line.
さて、加圧器５の満水操作時における加圧器５での圧力
急上昇を防止するために加圧器水位推定装置７および充
填流分演算装置８が設けられている。加圧器水位推定装
置７は、１次冷却材温度Ｔ１充填流ｆｆ１Ｇ１および抽
出流ｆｆ１Ｇ２を受けて加圧器５の水位の変化率を演算
し求めてその水位を推定する機能を持ったものである。Now, in order to prevent a sudden increase in the pressure in the pressurizer 5 when the pressurizer 5 is filled with water, a pressurizer water level estimating device 7 and a filling flow calculation device 8 are provided. The pressurizer water level estimating device 7 has a function of receiving the primary coolant temperature T1, the filling flow ff1G1, and the extraction flow ff1G2, calculating and determining the rate of change in the water level of the pressurizer 5, and estimating the water level.
具体的には次式を演算することによって水位を推定する
。Specifically, the water level is estimated by calculating the following equation.
ｄＬ ／ｄ℃−ａｌ （ｄＴ／ｄｔ） ＋ａ２（Ｇｌ
−Ｇ２ ）・・・（１）
ここで、ｔは時間、ａｌ、 ａ２は定数である。この第
（１）式から加圧器５の水位の変化率（ｄＬ／ｄｔ）が
求められ、さらに第（１）式の６返を積分することによ
って水位が求められる。また、充填流分演算装置８は、
加圧器水位推定装置７により求められた推定水位と加圧
器５の満水水位との差を求め、満水時における水位上昇
率がｒＯＪとなるように推定水位と満水水位との差に比
例した充填流ｍ制御信号Ｓを充填流６制ｔｉｌ＋装置６
に送出する機能をもったものである。具体的には水位変
化率と満水水位ＬＪ と推定水位しどの差とが比例する
ようにする。つまり、
（ｄＬ／ｄｔ） ＝ ｂ （ＬＯ−Ｌ ）
・＝（２）（ｂは定数〉
を求め、この第（２１式と上記第（１）式とから充填流
量Ｇ１を演算し求める。つまり、
Ｇ１−Ｇ２− （ａｌ／ａ２） ・（ｄＴ／ｄｔ）＋（
ｂ／ａ２）・（ＬＱ −Ｌ）
・・・（３）
である。従って、この充填流ｆｆ１Ｇ１により充填流量
制御信号Ｓが作成されて送出される。dL /d℃−al (dT/dt) +a2(Gl
-G2)...(1) Here, t is time, al, and a2 are constants. The rate of change (dL/dt) in the water level of the pressurizer 5 is determined from this equation (1), and the water level is further determined by integrating the six returns of equation (1). In addition, the filling flow calculation device 8 is
The difference between the estimated water level obtained by the pressurizer water level estimating device 7 and the full water level of the pressurizer 5 is determined, and the filling flow is calculated in proportion to the difference between the estimated water level and the full water level so that the water level rise rate at full water is rOJ. m control signal S filling flow 6 control til+ device 6
It has a function to send to. Specifically, the rate of change in water level is made proportional to the difference between the full water level LJ and the estimated water level. In other words, (dL/dt) = b (LO-L)
・=(2) (b is a constant) Calculate the filling flow rate G1 from this equation (21) and the above equation (1). In other words, G1-G2- (al/a2) ・(dT/ dt)+(
b/a2)・(LQ −L) (3). Therefore, the filling flow rate control signal S is created and sent out using this filling flow ff1G1.
次に上記の如く構成された′ＩＡ置の作用について説明
する。１次冷却材の温度は、原子炉１、蒸気発生器２お
よび１次冷却材等の１次冷却系に含まれる機器での熱の
発生、吸収によりその体積変化が生じる。従って、この
体積変化により加圧器５における水位が変動する。また
、１次冷却材の体積は、抽出流量と充填流量とに差が生
じれば変化する。かくして、１次冷却材の温度変化や抽
出流口の変動に対して充填流量を制御することによって
加圧器５における水位が制御される。Next, the operation of the 'IA position constructed as above will be explained. The temperature of the primary coolant changes in volume due to generation and absorption of heat in equipment included in the primary cooling system, such as the nuclear reactor 1, the steam generator 2, and the primary coolant. Therefore, the water level in the pressurizer 5 fluctuates due to this volume change. Further, the volume of the primary coolant changes if there is a difference between the extraction flow rate and the filling flow rate. Thus, the water level in the pressurizer 5 is controlled by controlling the filling flow rate in response to changes in the temperature of the primary coolant and fluctuations in the extraction flow port.
さて、加圧器５の満水操作にあっては、１次冷却材の温
１ｆＴ、充填流量Ｇ１および抽出流ｆｆ１Ｇ２とが検出
されてそれぞれ加圧器水位推定装置７に送られる。この
加圧器水位推定装置７は、１次冷却温度Ｔ、充填流ｆｆ
１Ｇ１および抽出流ｆｆ１Ｇ２を受けて上記第（１）式
を演算することによって水位の変化率を求める。そして
、開式を積分し水位を推定する。Now, when the pressurizer 5 is filled with water, the temperature 1fT of the primary coolant, the filling flow rate G1, and the extraction flow ff1G2 are detected and sent to the pressurizer water level estimating device 7, respectively. This pressurizer water level estimating device 7 has a primary cooling temperature T, a filling flow ff
1G1 and the extraction flow ff1G2 and calculate the above equation (1) to determine the rate of change in the water level. Then, the water level is estimated by integrating the open equation.
この水位の推定値しは充填流量演算手段８に送られ、こ
の充＠流」演算装置８は上記第（２式から推定水位しと
満水水位ＬＯとの差を演算して求め、水位の変化’＄
（ｄＬ／ｄｔ）を満水時における水位変化率を「０」と
するようにする。そして、上記第（３）式を演算するこ
とによって充填流ｆｆ１Ｇ１を求める。かくして、この
充填流ｆｆ１Ｇ１の充填流量制御信号Ｓが充填流ａ制御
装置６に送出される。なお、このときの加圧器５におけ
る水位の変化が第２図（ａ）に示してあり、また加圧器
５における圧力が同図（ｂ）に示しである。つまり、満
水時になっても加圧器５内の圧力は一定となっている。This estimated value of the water level is sent to the filling flow rate calculation means 8, and this charging@flow calculation device 8 calculates the difference between the estimated water level and the full water level LO from the above equation (2), and calculates the difference between the estimated water level and the full water level LO. '$
(dL/dt) is set so that the water level change rate when the water is full is "0". Then, the filling flow ff1G1 is determined by calculating the above equation (3). Thus, the filling flow rate control signal S of this filling flow ff1G1 is sent to the filling flow a control device 6. The change in the water level in the pressurizer 5 at this time is shown in FIG. 2(a), and the pressure in the pressurizer 5 is shown in FIG. 2(b). In other words, the pressure inside the pressurizer 5 remains constant even when the water is full.
このように上記一実施例においては、１次冷却材料温度
Ｔ、この１次冷却材料の充填流ｆｆ１Ｇ＋および抽出流
量Ｇ２から加圧器５の水位を推定し、この水位推定値り
と満水水位ＬＯとから満水時における水位上昇を停止す
る推定水位りと満水水位Ｌｏ との差に比例した充填流
量制御信号を演算して求めて充填流量を制御するので、
加圧器５の水位を自動的に制御することができ、特に満
水操作時の制御を自動的にできて運転員の負担を軽減で
きる。そして、この操作は、満水時の水位上昇率を「０
」と制御するので、満水時の加圧器５における圧力の急
上昇を防止できる。従って、満水操作に要する時間を短
縮できる。In this way, in the above embodiment, the water level of the pressurizer 5 is estimated from the primary cooling material temperature T, the filling flow ff1G+ of this primary cooling material, and the extraction flow rate G2, and this estimated water level and the full water level LO are calculated. Since the filling flow rate is controlled by calculating and finding a filling flow rate control signal proportional to the difference between the estimated water level that stops the water level rise at full water level and the full water level Lo,
The water level of the pressurizer 5 can be automatically controlled, and in particular, the control during full-water operation can be automatically performed, reducing the burden on the operator. Then, this operation sets the water level rise rate at full water to "0".
”, it is possible to prevent the pressure from rising rapidly in the pressurizer 5 when it is full of water. Therefore, the time required for the filling operation can be shortened.
なお、本発明は上記一実施例に限定されるものではなく
、その主旨を逸脱しない範囲で変形できる。It should be noted that the present invention is not limited to the above embodiment, and can be modified without departing from the spirit thereof.
以上詳記したように本発明は、１次冷却材料温度、この
１次冷却材料の充＠流はおよび抽出流口を受けて加圧器
における水位を推定する水位推定手段と、この水位推定
手段により推定された水位と満水水位とから満水時の水
位上昇を停止する推定水位と満水水位との差に比例した
充填流量制御信号を求める充填流量演算手段を喝えたも
のである。As described in detail above, the present invention includes a water level estimating means for estimating the water level in the pressurizer based on the temperature of the primary cooling material, the charging flow of the primary cooling material, and the extraction outlet, and the water level estimating means. The filling flow rate calculation means calculates a filling flow rate control signal proportional to the difference between the estimated water level and the full water level, which stops the rise in the water level when the water is full, from the estimated water level and the full water level.
したがって本発明によれば、１次冷却材料温度、この１
次冷却材料の充填流量および抽出流口から加圧器の水位
を推定し、この水位推定値と満水水位とから満水時にお
ける水位上昇を停止する推定水位と満水水位との差に比
例した充填流量制御信号を演算して求めて充填流量を制
御するので、加圧器満水操作を自動化し、かつ満水時に
おける加圧器の圧力急上昇を防止できる加圧器の水位制
御装置を提供できる。Therefore, according to the present invention, the temperature of the primary cooling material, this 1
The water level of the pressurizer is estimated from the filling flow rate of the next cooling material and the extraction flow port, and the filling flow rate is controlled in proportion to the difference between the estimated water level and the full water level, which stops the water level rise at full water level based on this estimated water level value and the full water level. Since the filling flow rate is controlled by calculating and determining the signal, it is possible to provide a water level control device for a pressurizer that can automate the filling operation of the pressurizer and prevent the pressure of the pressurizer from rising rapidly when the pressurizer is filled with water.
第１図は本発明に係わる加圧器の水位制御装置の一実施
例を示す全体構成図、第２図は本発明装置の作用を説明
するための図、第３図は従来装置の作用を説明するため
の図である。
１・・・原子炉、２・・・蒸気発生器、３・・・循環系
、４・・・１次冷却材ポンプ、５・・・加圧器、６・・
・充填流量制御装置、７・・・加圧器水位推定装置、８
・・・充填流量演算装置。
出願人復代理人 弁理士 鈴江武彦
時間 時間
（ａ） （ｂ）第２図
（ａ） （ｂ）Fig. 1 is an overall configuration diagram showing an embodiment of the water level control device for a pressurizer according to the present invention, Fig. 2 is a diagram for explaining the operation of the device of the present invention, and Fig. 3 is an illustration for explaining the operation of the conventional device. This is a diagram for 1... Nuclear reactor, 2... Steam generator, 3... Circulation system, 4... Primary coolant pump, 5... Pressurizer, 6...
・Filling flow rate control device, 7... Pressurizer water level estimation device, 8
...Filling flow rate calculation device. Applicant Sub-Agent Patent Attorney Takehiko Suzue Time Time (a) (b) Figure 2 (a) (b)
Claims (1)
制御装置において、１次冷却材料温度、この１次冷却材
料の充填流量および抽出流量を受けて前記加圧器におけ
る水位を推定する水位推定手段と、この水位推定手段に
より推定された水位と満水水位とから満水時の水位上昇
を停止する前記推定水位と前記満水水位との差に比例し
た充填流量制御信号を求める充填流量演算手段を具備し
たことを特徴とする加圧器の水位制御装置。Water level estimation for estimating the water level in the pressurizer based on the temperature of the primary cooling material, the filling flow rate and the extraction flow rate of the primary cooling material, in a water level control device for a pressurizer connected to the cooler circulation system of a pressurized water reactor. and a filling flow rate calculation means for calculating a filling flow rate control signal proportional to the difference between the estimated water level and the full water level, which stops the water level rise at full water level, from the water level estimated by the water level estimating means and the full water level. A water level control device for a pressurizer, which is characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61043134A JPS62201396A (en) | 1986-02-28 | 1986-02-28 | Water-level controller for pressurizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61043134A JPS62201396A (en) | 1986-02-28 | 1986-02-28 | Water-level controller for pressurizer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62201396A true JPS62201396A (en) | 1987-09-05 |
| JPH0579160B2 JPH0579160B2 (en) | 1993-11-01 |
Family
ID=12655374
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61043134A Granted JPS62201396A (en) | 1986-02-28 | 1986-02-28 | Water-level controller for pressurizer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62201396A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0643461U (en) * | 1992-11-25 | 1994-06-10 | 日本電信電話株式会社 | Underground buried object protection net |
-
1986
- 1986-02-28 JP JP61043134A patent/JPS62201396A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0579160B2 (en) | 1993-11-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4424186A (en) | Power generation | |
| JPS6136604A (en) | Method and device for protecting pump and pump-motor | |
| US3916445A (en) | Training simulator for nuclear power plant reactor coolant system and method | |
| JPS62480B2 (en) | ||
| JPS62201396A (en) | Water-level controller for pressurizer | |
| US4124067A (en) | Pressurization apparatus with an intermediate reserve vessel | |
| JPS63150415A (en) | Cooling device for water-cooling internal combustion negine | |
| US4361535A (en) | Control system and process for the operation of nuclear reactors | |
| JPS6139046Y2 (en) | ||
| JPS63315996A (en) | Operating method for liquid-metal cooled fast neutron reactor | |
| JPH04148895A (en) | Speed controller for coolant recirculation pump | |
| JP2534546Y2 (en) | Operation control device for pressurized water reactor | |
| JPS59119295A (en) | Recirculation pump control device | |
| JPS6115004A (en) | Thermal-medium circulating heat exchanger | |
| KR810001339B1 (en) | Nuclear reactor power generation | |
| SU823607A1 (en) | Method of operation of steam-gas plant | |
| JPS58217103A (en) | Controller for feedwater pump | |
| JPS61201198A (en) | Pressure control system on water fullness of pressurizer | |
| JPS6291896A (en) | Device for removing residual heat of nuclear reactor | |
| JPS59136694A (en) | Forecast control device for fast breeder plant | |
| JPH04285500A (en) | Output controller for generator | |
| JPH0139078B2 (en) | ||
| JPS63282695A (en) | Core part stabilizing apparatus | |
| JPS61266995A (en) | Pressurized water type nuclear power plant | |
| JPS5915000B2 (en) | Computer-based load runback control method for power generation plants |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |