JP2007244101A - Method of operating pumped-storage power generation in consideration of environment - Google Patents

Method of operating pumped-storage power generation in consideration of environment Download PDF

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JP2007244101A
JP2007244101A JP2006063469A JP2006063469A JP2007244101A JP 2007244101 A JP2007244101 A JP 2007244101A JP 2006063469 A JP2006063469 A JP 2006063469A JP 2006063469 A JP2006063469 A JP 2006063469A JP 2007244101 A JP2007244101 A JP 2007244101A
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pumped
power generation
power
storage power
generation plant
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Kazue Yashiro
和重 屋代
Nobuyuki Kaneshima
信之 金島
Naoki Inaba
直己 稲葉
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Tokyo Electric Power Company Holdings Inc
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Tokyo Electric Power Co Inc
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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
    • 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
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a method of operating a pumped-storage power generation plant in consideration of not only economy but also environmental friendliness. <P>SOLUTION: When there are margins to the lower limit of the power capacity that can be generated during daytime and the upper limit of the power capacity that can be generated during night-time at the pumped-storage power generation plant, the most economical power source operation plan can be made under a condition that exhaust gases (including CO2, SOx, NOx) of a thermal power generation plant are suppressed to a predetermined exhaust amount or lower, by increasing the power generation of the pumped-storage power generation plant and suppressing the output of the thermal power generation plant, which contains comparatively more exhaust gases, during daytime, and by increasing the output of the thermal power generation plant, which contains comparatively less exhaust gases, and increasing the water pumping of the pumped-storage power generation plant during night-time. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は，原子力，火力及び揚水発電などの各種発電所の出力を電力需要に応じて制御することにより需要に応じた電力を供給する給電システムに係り，特に環境を考慮した揚水発電運用方法に関する。   The present invention relates to a power supply system that supplies electric power according to demand by controlling the output of various power plants such as nuclear power, thermal power, and pumped-storage power generation according to electric power demand, and particularly relates to a pumped-power generation operation method that considers the environment. .

電力の需給は常に変化するため，電力の需要に応じて発電所の出力調整を行うことが従来からなされている（例えば特許文献１）。その際，原子力発電所などの出力変化不可のベース電源を多く保有し，かつ，電力の需給調整に用いられる揚水発電所を多く保有する電力系統では，揚水発電所の適切な運用が火力発電所の出力調整とともに，電力の需給バランスを保持する重要なファクターとなっている。揚水発電所では，夜間の電力需要が小さいときに，揚水発電所をポンプとして動作させ，下部ダムから上部ダムへ水をくみ上げておき，昼間の電力需要が大きいときに，上部ダムの水を下部ダムに流して発電することが行われている（図１参照）。
特開２００３−９３９１号公報 Since the supply and demand of electric power constantly changes, it has been conventionally performed to adjust the output of a power plant according to the demand for electric power (for example, Patent Document 1). At that time, in a power system that has many base power sources that cannot change its output, such as nuclear power plants, and many pumped-storage power plants that are used for power supply and demand adjustment, proper operation of the pumped-storage power plants is not suitable for thermal power plants. This is an important factor to maintain the power supply-demand balance. At the pumped storage power plant, when the nighttime power demand is small, the pumped storage power plant is operated as a pump and pumps water from the lower dam to the upper dam. Electricity is generated by flowing through a dam (see Fig. 1).
JP 2003-9391 A

週末などの休日夜間は特に電力需要が小さく余剰電力が多いため，休日前には，あらかじめ上部ダムに水をくみ上げるための空容量を確保しておく必要がある。このため，平日に火力発電所の出力を抑制して揚水発電所の発電量を増やし，上部ダムに十分な空容量を確保している。このような揚水発電所の運用は週間単位での計画となるのが通常である（例えば特許文献２）。
特願２００５−１０１４８０号公報 On weekends and other holidays, the demand for electricity is particularly small and the amount of surplus electricity is large. Therefore, it is necessary to secure an empty capacity to pump water into the upper dam before the holidays. For this reason, the power generation of the pumped storage power plant is increased by suppressing the output of the thermal power plant on weekdays, and sufficient free space is secured in the upper dam. The operation of such a pumped storage power plant is usually planned on a weekly basis (for example, Patent Document 2).
Japanese Patent Application No. 2005-101480

しかしながら，特許文献２で開示されたような揚水発電所の運用方法では，経済性のみを考慮しており，環境性については一切考慮されていない。
本発明の目的は，昨今の情勢を踏まえて，環境性を考慮した揚水発電所の運用方法を提供することである。 However, in the operation method of a pumped storage power plant as disclosed in Patent Document 2, only economic efficiency is considered, and environmental quality is not considered at all.
An object of the present invention is to provide an operation method of a pumped storage power plant in consideration of environmental characteristics based on the current situation.

本発明は，１日の電力需要の中で電力需要が大きい第１の時間帯に上部ダムの水を下部ダムに落として発電し，余剰電力がある第２の時間帯に下部ダムの水を上部ダムにくみ上げる揚水発電運用方法であって，火力発電所の排出ガスを所定の排出量以下に抑制することを特徴とする。   The present invention generates power by dropping the water of the upper dam to the lower dam during the first time period when the power demand is large among the daily power demand, and the water of the lower dam during the second time period when there is surplus power. A pumped-storage power generation operation method for pumping up an upper dam, characterized in that the exhaust gas of a thermal power plant is suppressed to a predetermined emission amount or less.

また，本発明は，１日の電力需要の中で電力需要が大きい第１の時間帯に上部ダムの水を下部ダムに落として発電し，余剰電力がある第２の時間帯に下部ダムの水を上部ダムにくみ上げる揚水発電運用方法であって，前記第２の時間帯に排出ガスが相対的に少ない火力発電所の出力を増加させて揚水発電所の揚水動力とし，前記第１の時間帯に揚水発電所の出力を増加させて排出ガスが相対的に多い火力発電所の出力を抑制することを特徴とする。   In addition, the present invention generates power by dropping the water of the upper dam to the lower dam during the first time period when the power demand is large among the daily power demand, and at the second time period when there is surplus power. A pumped-storage power generation operation method for pumping water into an upper dam, wherein the output of the thermal power plant with relatively little exhaust gas is increased during the second time period to obtain the pumping power of the pumped-storage power plant, and the first time It is characterized by increasing the output of the pumped storage power plant to suppress the output of the thermal power plant with relatively large exhaust gas.

また，本発明は，前記排出ガスは，二酸化炭素（ＣＯ２），硫黄酸化物（ＳＯｘ），窒素酸化物（ＮＯｘ）のいずれか一つまたはこれらの組合せであることを特徴とする。   Further, the present invention is characterized in that the exhaust gas is any one of carbon dioxide (CO2), sulfur oxide (SOx), nitrogen oxide (NOx), or a combination thereof.

本発明によれば，火力発電所の排出ガス（ＣＯ２，ＳＯｘ，ＮＯｘなど）を所定の排出量以下に抑制するという条件の中で，最も経済的な電源運用計画を作成することが可能となる。
さらに，環境性を考慮して，排出ガスを最も少なくする電源運用計画を作成することが可能となる。 According to the present invention, it is possible to create the most economical power operation plan under the condition that the exhaust gas (CO2, SOx, NOx, etc.) of a thermal power plant is suppressed to a predetermined emission amount or less. .
In addition, it is possible to create a power supply operation plan that minimizes exhaust gas in consideration of environmental performance.

火力発電所における一または複数の排出ガスを所定の排出量以下に抑制するための揚水発電運用方法を図２で説明する。
（１） 従来技術により，揚水発電所の諸制約（発電可能電力量の上限・下限，需要と供給のバランスなど）を満たした電源運用計画を作成する（Ｓ１）。
（２） 揚水発電所の昼間の発電可能電力量下限および夜間の発電可能電力量上限に余裕がある場合（Ｓ２〜Ｓ３），昼間に揚水発電所の発電を増加して排出ガスが相対的に多い火力発電所の出力を抑制し（Ｓ４），夜間に排出ガスが相対的に少ない火力発電所の出力を増加して揚水発電所の揚水を増加する（Ｓ４）。
（３） 排出ガスが所定の排出量以下となったら終了する（Ｓ５）。
（４） 上記（２）〜（３）を繰り返すことにより，単に排出ガスを所定の排出量以下に抑制するだけではなく，排出ガスの排出量を最も少なくする電源運用計画を作成することができる（Ｓ６）。 A pumped-storage power generation operation method for suppressing one or a plurality of exhaust gases in a thermal power plant to a predetermined emission amount or less will be described with reference to FIG.
(1) A power supply operation plan that satisfies various restrictions (upper and lower limits of the amount of power that can be generated, balance between demand and supply, etc.) is created by conventional technology (S1).
(2) When there is a margin in the lower limit of the daytime power generation capacity and the nighttime power generation capacity upper limit of the pumped storage power plant (S2 to S3), the power generation of the pumped storage power plant is increased during the day to The output of many thermal power plants is suppressed (S4), and the output of thermal power plants with relatively little exhaust gas at night is increased to increase pumping of the pumped storage power plant (S4).
(3) When the exhaust gas becomes equal to or less than the predetermined exhaust amount, the process ends (S5).
(4) By repeating the above (2) to (3), it is possible not only to suppress the exhaust gas to a predetermined emission amount or less, but also to create a power operation plan that minimizes the emission amount of the exhaust gas. (S6).

一日の電力需要変化と発電種類別の出力分担を示した図である。It is the figure which showed the electric power demand change of a day, and the output sharing according to electric power generation kind. 本発明の実施形態に係る電源運用計画を作成する方法を示したフローチャートである。It is the flowchart which showed the method of creating the power supply operation plan which concerns on embodiment of this invention.

Claims (3)

１日の電力需要の中で電力需要が大きい第１の時間帯に上部ダムの水を下部ダムに落として発電し，余剰電力がある第２の時間帯に下部ダムの水を上部ダムにくみ上げる揚水発電運用方法であって，
火力発電所の排出ガスを所定の排出量以下に抑制することを特徴とする揚水発電運用方法。 During the first time period when the demand for electricity is high, the water in the upper dam is dropped to the lower dam to generate power, and the water in the lower dam is pumped into the upper dam in the second time period with surplus power. A pumped storage power generation operation method,
A pumped storage power generation operation method characterized by suppressing exhaust gas from a thermal power plant to a predetermined amount or less. １日の電力需要の中で電力需要が大きい第１の時間帯に上部ダムの水を下部ダムに落として発電し，余剰電力がある第２の時間帯に下部ダムの水を上部ダムにくみ上げる揚水発電運用方法であって，
前記第２の時間帯に排出ガスが相対的に少ない火力発電所の出力を増加させて揚水発電所の揚水動力とし，前記第１の時間帯に揚水発電所の出力を増加させて排出ガスが相対的に多い火力発電所の出力を抑制することを特徴とする請求項１記載の揚水発電運用方法。 During the first time period when the demand for electricity is high, the water in the upper dam is dropped to the lower dam to generate power, and the water in the lower dam is pumped into the upper dam in the second time period with surplus power. A pumped storage power generation operation method,
In the second time zone, the output of the thermal power plant with relatively little exhaust gas is increased to obtain the pumping power of the pumped storage power plant, and in the first time zone, the output of the pumped storage power plant is increased to generate exhaust gas. The pumped-storage power generation operation method according to claim 1, wherein the output of relatively many thermal power plants is suppressed. 前記排出ガスは，二酸化炭素（ＣＯ２），硫黄酸化物（ＳＯｘ），窒素酸化物（ＮＯｘ）のいずれか一つまたはこれらの組合せであることを特徴とする請求項１乃至請求項２記載の揚水発電運用方法。
3. The pumped water according to claim 1, wherein the exhaust gas is any one of carbon dioxide (CO2), sulfur oxide (SOx), nitrogen oxide (NOx), or a combination thereof. Power generation operation method.
JP2006063469A 2006-03-09 2006-03-09 Method of operating pumped-storage power generation in consideration of environment Pending JP2007244101A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009106064A (en) * 2007-10-23 2009-05-14 Hiromasa Higasa Service-operation method for energy-saving flywheel

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001346333A (en) * 2000-05-31 2001-12-14 Toshiba Corp Power plant operation controlling method and operation controlling apparatus thereof
JP2005196300A (en) * 2003-12-26 2005-07-21 Toshiba Corp Discharge amount prediction system of greenhouse gas, program

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001346333A (en) * 2000-05-31 2001-12-14 Toshiba Corp Power plant operation controlling method and operation controlling apparatus thereof
JP2005196300A (en) * 2003-12-26 2005-07-21 Toshiba Corp Discharge amount prediction system of greenhouse gas, program

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009106064A (en) * 2007-10-23 2009-05-14 Hiromasa Higasa Service-operation method for energy-saving flywheel

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