JP7164478B2 - 発電プラント及び発電プラントの出力増加制御方法 - Google Patents
発電プラント及び発電プラントの出力増加制御方法 Download PDFInfo
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- 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
- F01D17/10—Final actuators
- F01D17/12—Final actuators arranged in stator parts
- F01D17/14—Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits
- F01D17/141—Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits by means of shiftable members or valves obturating part of the flow path
- F01D17/145—Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits by means of shiftable members or valves obturating part of the flow path by means of valves, e.g. for steam turbines
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- 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
- F01K11/02—Plants characterised by the engines being structurally combined with boilers or condensers the engines being turbines
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- 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
- F01D15/00—Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby
- F01D15/10—Adaptations for driving, or combinations with, electric generators
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- 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
- F01D17/10—Final actuators
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- 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
- F01K13/00—General layout or general methods of operation of complete plants
- F01K13/02—Controlling, e.g. stopping or starting
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- 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
- F01K17/00—Using steam or condensate extracted or exhausted from steam engine plant
- F01K17/02—Using steam or condensate extracted or exhausted from steam engine plant for heating purposes, e.g. industrial, domestic
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- 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
- F01K17/00—Using steam or condensate extracted or exhausted from steam engine plant
- F01K17/06—Returning energy of steam, in exchanged form, to process, e.g. use of exhaust steam for drying solid fuel or plant
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- 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
- F01K7/00—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating
- F01K7/34—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating the engines being of extraction or non-condensing type; Use of steam for feed-water heating
- F01K7/38—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating the engines being of extraction or non-condensing type; Use of steam for feed-water heating the engines being of turbine type
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- 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
- F01K7/00—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating
- F01K7/34—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating the engines being of extraction or non-condensing type; Use of steam for feed-water heating
- F01K7/40—Use of two or more feed-water heaters in series
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- 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
- F01K7/00—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating
- F01K7/34—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating the engines being of extraction or non-condensing type; Use of steam for feed-water heating
- F01K7/44—Use of steam for feed-water heating and another purpose
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- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
- F22D1/00—Feed-water heaters, i.e. economisers or like preheaters
- F22D1/32—Feed-water heaters, i.e. economisers or like preheaters arranged to be heated by steam, e.g. bled from turbines
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
- F22D1/00—Feed-water heaters, i.e. economisers or like preheaters
- F22D1/50—Feed-water heaters, i.e. economisers or like preheaters incorporating thermal de-aeration of feed-water
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
- F22D5/00—Controlling water feed or water level; Automatic water feeding or water-level regulators
- F22D5/26—Automatic feed-control systems
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
- F22D5/00—Controlling water feed or water level; Automatic water feeding or water-level regulators
- F22D5/26—Automatic feed-control systems
- F22D5/34—Applications of valves
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- 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
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
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Description
また、脱気器水位調節弁の閉制御による、復水器内の水位上昇を避けるため、脱気器水位調節弁上流の復水を一時的に貯水するための復水貯蔵タンク(Cold Condensate Storage Tank、以下CCSTと称する)を設置する必要があり、さらなる設備コスト上昇の要因となる。
本発明の目的は、発電プラントの発電出力増加を実施する上で、CCSTを不要にすること若しくはその容量を小さくすることを可能とし、また、脱気器容量に依らない発電プラント及び発電プラントの出力増加制御方法を提供することにある。
上記した以外の課題、構成及び効果は、以下の実施形態の説明により明らかにされる。
図1は本発明の発電プラントの構成例を示す図である。なお、図では、主蒸気弁などの弁や、脱塩装置などその他の補機類の図示を省略している。
発電プラントに対して急速負荷増加要求があった場合、ボイラ負荷が立ち上がるまでに、上述のように構成された発電プラントを次に述べる方法により制御して発電出力の急速上昇要求に対処するようにしている。
Claims (6)
- 蒸気発生装置と、前記蒸気発生装置で発生した蒸気により駆動するタービンと、前記タービンから排出された蒸気を復水にする復水器と、復水ポンプで昇圧された復水を加熱する給水加熱器と、前記給水加熱器で加熱された復水を加熱脱気する脱気器と、前記脱気器の水位を調節する脱気器水位調節弁と、前記タービンから抽気した蒸気を前記給水加熱器へ導入する抽気系統に設けられた抽気弁を有する発電プラントにおいて、
前記給水加熱器へ補助蒸気を導入する補助蒸気導入系統と、
前記補助蒸気導入系統に設けられ前記給水加熱器へ供給する蒸気量を調整する補助蒸気調節弁と、
前記脱気器水位調節弁、前記抽気弁、前記補助蒸気調節弁に対して開度指令信号を出力する制御装置を備え、
前記制御装置は、前記発電プラントに対する急速負荷増加要求時に、前記抽気弁を閉方向、前記脱気器水位調節弁を開度維持、補助蒸気調節弁を開方向に制御することを特徴とする発電プラント。 - 請求項1に記載の発電プラントにおいて、
前記補助蒸気導入系統の補助蒸気供給管内に補助蒸気の減温器を設置したことを特徴とする発電プラント。 - 請求項1に記載の発電プラントにおいて、
前記補助蒸気導入系統の補助蒸気供給管内に補助蒸気の減圧器を設置したことを特徴とする発電プラント。 - 蒸気発生装置と、前記蒸気発生装置で発生した蒸気により駆動するタービンと、前記タービンから排出された蒸気を復水にする復水器と、復水ポンプで昇圧された復水を加熱する給水加熱器と、前記給水加熱器で加熱された復水を加熱脱気する脱気器と、前記脱気器の水位を調節する脱気器水位調節弁と、前記タービンから抽気した蒸気を前記給水加熱器へ導入する抽気系統に設けられた抽気弁と、前記給水加熱器へ補助蒸気を導入する補助蒸気導入系統と、前記補助蒸気導入系統に設けられ前記給水加熱器へ供給する蒸気量を調整する補助蒸気調節弁を備える発電プラントの出力増加制御方法であって、
前記発電プラントに対する急速負荷増加要求時に、前記抽気弁を閉方向、前記脱気器水位調節弁を開度維持、補助蒸気調節弁を開方向に制御することを特徴とする発電プラントの出力増加制御方法。 - 請求項4に記載の発電プラントの出力増加制御方法において、
前記給水加熱器内の圧力を計測し、前記給水加熱器内の圧力を制御指標として前記補助蒸気調節弁の開度を制御することを特徴とする発電プラントの出力増加制御方法。 - 請求項4に記載の発電プラントの出力増加制御方法において、
前記抽気系統を流れる抽気蒸気の流量を計測し、前記抽気蒸気の流量を制御指標として前記補助蒸気調節弁の開度を制御することを特徴とする発電プラントの出力増加制御方法。
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JP2019063120A JP7164478B2 (ja) | 2019-03-28 | 2019-03-28 | 発電プラント及び発電プラントの出力増加制御方法 |
US16/700,142 US10941677B2 (en) | 2019-03-28 | 2019-12-02 | Power plant and power output increase controlling method for power plant |
EP19213127.4A EP3715593B1 (en) | 2019-03-28 | 2019-12-03 | Power plant and power output increase controlling method for power plant |
KR1020190160351A KR102325859B1 (ko) | 2019-03-28 | 2019-12-05 | 발전 플랜트 및 발전 플랜트의 출력 증가 제어 방법 |
CN201911259203.1A CN111749740B (zh) | 2019-03-28 | 2019-12-10 | 发电设备以及发电设备的输出增加控制方法 |
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JP2004190546A (ja) | 2002-12-10 | 2004-07-08 | Toshiba Corp | 汽力発電プラント |
WO2012090778A1 (ja) | 2010-12-27 | 2012-07-05 | 三菱重工業株式会社 | 発電プラントの復水流量制御装置及び制御方法 |
JP2013053531A (ja) | 2011-09-01 | 2013-03-21 | Hitachi Ltd | 発電プラント及びその発電出力増加方法 |
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CN111749740B (zh) | 2022-09-06 |
US20200308991A1 (en) | 2020-10-01 |
JP2020159352A (ja) | 2020-10-01 |
EP3715593A1 (en) | 2020-09-30 |
CN111749740A (zh) | 2020-10-09 |
KR102325859B1 (ko) | 2021-11-12 |
KR20200115025A (ko) | 2020-10-07 |
EP3715593B1 (en) | 2023-04-26 |
US10941677B2 (en) | 2021-03-09 |
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