JPH0742573A - Compressed air energy storage type power leveling system - Google Patents

Compressed air energy storage type power leveling system

Info

Publication number
JPH0742573A
JPH0742573A JP5190251A JP19025193A JPH0742573A JP H0742573 A JPH0742573 A JP H0742573A JP 5190251 A JP5190251 A JP 5190251A JP 19025193 A JP19025193 A JP 19025193A JP H0742573 A JPH0742573 A JP H0742573A
Authority
JP
Japan
Prior art keywords
compressed air
compressor
turbine
power
generator
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.)
Pending
Application number
JP5190251A
Other languages
Japanese (ja)
Inventor
Shigeru Aeba
茂 饗庭
Tadashi Tsuji
正 辻
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Heavy Industries Ltd
Original Assignee
Mitsubishi Heavy Industries Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mitsubishi Heavy Industries Ltd filed Critical Mitsubishi Heavy Industries Ltd
Priority to JP5190251A priority Critical patent/JPH0742573A/en
Publication of JPH0742573A publication Critical patent/JPH0742573A/en
Pending legal-status Critical Current

Links

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
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/16—Mechanical energy storage, e.g. flywheels or pressurised fluids

Abstract

PURPOSE:To generate power by a method wherein power is fed to an electric motor/generator during power being surplus in the night time, a compressor/ turbine is driven as a compressor, compressed air is stored in a compressed air tank, and during power shortage in the daytime, compressed air is fed from the compressed air tank to the compressor/turbine, and the electric motor/ generator is driven as a generator. CONSTITUTION:A compressor/turbine 1 and an electric motor/generator 2 are arranged on one shaft. A compressed air tank 3 is communicated with the compressed air suction/exhaust hole of the compressor/turbine 1. During power being surplus at night, power is fed to the electric motor/generator 2, the compressor/turbine 1 is driven as a compressor, and compressed air is stored in the compressed air tank 3.

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【産業上の利用分野】本発明は、夜間電力を利用する電
力平準化システムに係り、特に、空気を貯蔵・放出して
発電を行なう小・中規模圧縮空気エネルギー貯蔵式電力
平準化システムに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power leveling system using nighttime power, and more particularly to a small / medium scale compressed air energy storage type power leveling system for storing and discharging air to generate power.

【０００２】[0002]

【従来の技術】夜間電力を利用する電力平準化システム
の従来技術を図５を参照して説明する。従来は、夜間電
力平準化システムとして、圧縮機と電動機兼発電機とタ
ービン（ガスタービン）とを嵌脱接手を介して同軸に配
備し、圧縮機の空気出口と燃焼器と空気貯蔵地下空洞の
３つを弁などを介して３方に接続したガスタービン式の
夜間電力平準化システムが存在する。2. Description of the Related Art A conventional technique of a power leveling system using nighttime power will be described with reference to FIG. Conventionally, as a night-time power leveling system, a compressor, an electric motor / generator and a turbine (gas turbine) are coaxially arranged through a fitting / disconnecting hand, and the air outlet of the compressor, the combustor, and the air storage underground cavity are installed. There is a gas turbine type night-time power leveling system in which three are connected in three directions via valves or the like.

【０００３】その運転は次の通りである。夜間電力が余
っているときは、電動機と圧縮機を接なぎ、電動機にて
圧縮機を駆動し、得られた圧縮空気を空気貯蔵地下空洞
へ導き圧縮空気を貯蔵する。The operation is as follows. When there is excess nighttime power, the electric motor and compressor are connected, and the electric motor drives the compressor, and the compressed air obtained is guided to the air storage underground cavity to store the compressed air.

【０００４】昼間電力が不足しているときは、発電機と
タービンを接なぎ、空気貯蔵地下空洞に貯蔵された圧縮
空気を燃焼器へ送り、燃料と混合させて燃焼し、高温ガ
スにてタービン（ガスタービン）を駆動し、発電する。
また、通常時は、一般のガスタービンシステムと同様の
運転も可能である。When the electric power is insufficient in the daytime, the generator and the turbine are connected to each other, the compressed air stored in the air storage underground cavity is sent to the combustor, is mixed with the fuel, and is burned. (Gas turbine) is driven to generate electricity.
In addition, at the normal time, the same operation as that of a general gas turbine system is possible.

【０００５】[0005]

【発明が解決しようとする課題】上記した従来のシステ
ムに於いては、システムの大容量化は図れるが、設備費
が高くなり、発電単価が高くなる。また、大量の空気を
貯蔵する地下空洞等の立地条件は、山間部が適してお
り、地域的な制約があるとともに、関連設備の建設費が
かさみ、メンテナンスや燃料確保の点からも非常に不便
である。In the above-mentioned conventional system, the capacity of the system can be increased, but the equipment cost becomes high and the unit price of power generation becomes high. In addition, location conditions such as underground cavities that store a large amount of air are suitable in the mountainous areas, there are regional restrictions, construction costs for related equipment are high, and it is very inconvenient from the viewpoint of maintenance and fuel security. Is.

【０００６】本発明は上記実情に鑑みなされたもので、
従来のガスタービンを用いる構成に比し、構成が簡単
で、建設費が安く、かつ立地条件が特定されないことか
ら、発電単価を低減できる、経済的に有利な、小・中規
模圧縮空気エネルギー貯蔵式電力平準化システムを提供
することを目的とする。The present invention has been made in view of the above circumstances,
Compared to the conventional gas turbine configuration, the configuration is simple, the construction cost is low, and the location conditions are not specified, so the unit price of power generation can be reduced, which is economically advantageous, and small or medium scale compressed air energy storage. An object of the present invention is to provide an electric power leveling system.

【０００７】[0007]

【課題を解決するための手段】本発明は、圧縮機兼ター
ビンと電動機兼発電機を一軸上に配置し、圧縮機兼ター
ビンの圧縮空気吸排気孔と圧縮空気槽を連通した小・中
規模圧縮空気エネルギー貯蔵式電力平準化システムを特
徴とする。SUMMARY OF THE INVENTION According to the present invention, a compressor / turbine, an electric motor / generator are arranged on a single axis, and a compressed air intake / exhaust hole of the compressor / turbine is communicated with a compressed air tank. It features an air energy storage type power leveling system.

【０００８】更に、本発明は、圧縮機と電動機兼発電機
とタービンを嵌脱接手を介して一軸上に配置し、圧縮機
の圧縮空気排気孔とタービンの吸気孔と圧縮空気槽を弁
手段を介して連通した小・中規模圧縮空気エネルギー貯
蔵式電力平準化システムを特徴とする。Further, according to the present invention, the compressor, the electric motor / generator, and the turbine are arranged on one axis through a fitting / disconnecting arm, and the compressed air exhaust hole of the compressor, the intake hole of the turbine, and the compressed air tank are valve means. It features a small-to-medium-scale compressed air energy storage type power leveling system that communicates via a

【０００９】更に、具体的な実施例（１）として、ター
ビン入り口温度を更に上昇させて、出力・効率を向上さ
せるときは、 ａ）．図３に示すように、アフタークーラー兼ヒータ
（ＡＣ）で昇温した空気を圧縮機兼タービン１に投入す
る。Further, as a specific embodiment (1), when the turbine inlet temperature is further raised to improve the output and efficiency, a). As shown in FIG. 3, the air heated by the after-cooler / heater (AC) is introduced into the compressor / turbine 1.

【００１０】ｂ）．熱媒加熱装置（ＡＦ）で熱媒（ａ）
を予熱する。 以上の手段のいずれか又は双方を用いる。更に、具体的
な実施例（２）として、吸気冷却兼排熱回収（ＩＣ）は
圧縮機運用では吸気冷却、タービン運用では熱回収のた
めに用いる。消音設備（ＳＥ）には消音装置（吸気・排
気併用）を内蔵し、圧縮時は吸気フィルタ（Ｆ）、ター
ビン作動時は排気設備（ＳＴＣＫ）を用いる。B). Heat medium (a) by heat medium heating device (AF)
Preheat. Either or both of the above means are used. Further, as a specific embodiment (2), the intake air cooling / exhaust heat recovery (IC) is used for intake air cooling in compressor operation and for heat recovery in turbine operation. The silencer (SE) incorporates a silencer (both intake and exhaust), and uses an intake filter (F) during compression and an exhaust facility (STCK) during turbine operation.

【００１１】[0011]

【作用】上記した本発明の構成によれば、夜間は余剰電
力を利用して、空気貯蔵槽に圧縮空気エネルギーとして
貯蔵し、昼間は電力不足時に、この圧縮空気にてタービ
ンを駆動し、電力として回収し送電する電力平準化シス
テムが実現できる。According to the above-described structure of the present invention, surplus power is used at night to store compressed air energy in the air storage tank, and during the daytime, when the power is insufficient, the compressed air is used to drive the turbine to generate power. A power leveling system that collects and transmits the power can be realized.

【００１２】更に、図３に示される実施例（第３実施
例）の作用について述べると、 （１）．空洞への貯蔵は図示Ａ方向に空気を投入し、発
電時は全く逆方向（Ｂ方向）に空気を流して膨張タービ
ンとして作動させる。 （２）．空洞貯蔵では空気冷却、膨張操作では空気昇温
を行なうには、アフタークーラー兼ヒータ（ＡＣ）を用
いて、熱媒を循環させ、貯蔵時は熱媒タンク（Ｔ）を熱
媒（ａ）で充填し、発電時はそれをアフタークーラー兼
ヒータ（ＡＣ）に向けて払い出す。Further, the operation of the embodiment (third embodiment) shown in FIG. 3 will be described. (1). For the storage in the cavity, air is injected in the direction A in the figure, and at the time of power generation, the air is made to flow in the completely opposite direction (direction B) to operate as an expansion turbine. (2). In order to perform air cooling in the cavity storage and air temperature rise in the expansion operation, the aftercooler / heater (AC) is used to circulate the heat medium, and at the time of storage, the heat medium tank (T) is kept in the heat medium (a). It is filled and discharged during power generation toward the aftercooler and heater (AC).

【００１３】これにより、本来必要とされる、圧縮機・
タービン各１台（図５参照）が、本発明に於いては１台
の圧縮機兼タービンで済み、コストダウン、設置エリア
の節約が図れる。又、熱媒加熱装置（ＡＦ）の使用で、
高出力・高効率発電が可能となる。 （３）．吸気冷却兼排熱回収（ＩＣ）の消音効果は、消
音設備ＳＥの消音装置の小型化に役立つ。As a result, the compressor, which is originally required,
In the present invention, one turbine each (see FIG. 5) is required to be one compressor / turbine, so that cost reduction and installation area saving can be achieved. Also, by using a heating medium heating device (AF),
High power and high efficiency power generation becomes possible. (3). The sound deadening effect of the intake air cooling and exhaust heat recovery (IC) is useful for downsizing of the sound deadening device of the sound deadening equipment SE.

【００１４】[0014]

【実施例】以下図面を参照して本発明の一実施例を説明
する。先ず、本発明の第１実施例を図１を参照して説明
する。図１に示す第１実施例に於いては、圧縮機兼ター
ビン１と電動機兼発電機２が一軸上に配置され、圧縮空
気槽３が圧縮機兼タービン１の圧縮空気吸排気孔と連通
されている。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. First, a first embodiment of the present invention will be described with reference to FIG. In the first embodiment shown in FIG. 1, the compressor / turbine 1 and the electric motor / generator 2 are arranged on one axis, and the compressed air tank 3 is connected to the compressed air intake / exhaust holes of the compressor / turbine 1. There is.

【００１５】この第１実施例のシステムでは、夜間等の
電力余剰時に、電動機兼発電機２に電力を供給し、圧縮
機兼タービン１を圧縮機として駆動し、圧縮空気槽３に
圧縮空気を貯蔵する。In the system of the first embodiment, when the power is surplus at night, electric power is supplied to the electric motor / generator 2, the compressor / turbine 1 is driven as a compressor, and compressed air is supplied to the compressed air tank 3. Store.

【００１６】そして昼間等の電力不足時に、圧縮空気槽
３から圧縮空気を圧縮機兼タービン１へ供給し、電動機
兼発電機２を発電機として駆動し、電力を得る。次に、
本発明の第２実施例を図２を参照して説明する。When the electric power is insufficient during the daytime, compressed air is supplied from the compressed air tank 3 to the compressor / turbine 1 to drive the electric motor / generator 2 as a generator to obtain electric power. next,
A second embodiment of the present invention will be described with reference to FIG.

【００１７】図２に示す第２実施例に於いては、圧縮機
４と電動機兼発電機２とタービン５とがそれぞれ嵌脱接
手６，６を介して一軸上に配置され、圧縮空気槽３が圧
縮機４とタービン５とにそれぞれ弁７を介して連通され
ている。In the second embodiment shown in FIG. 2, the compressor 4, the electric motor / generator 2 and the turbine 5 are arranged on a single axis via the fitting / removing joints 6 and 6, respectively, and the compressed air tank 3 is provided. Are communicated with the compressor 4 and the turbine 5 via valves 7, respectively.

【００１８】この第２実施例のシステムでは、電力余剰
時は圧縮機４と電動機兼発電機２を嵌脱接手６にて接続
し、上記した第１実施例と同様に、圧縮空気を貯蔵す
る。そして、電力不足時には、タービン５と電動機兼発
電機２を嵌脱接手６にて接続し、上記した第１実施例と
同様に発電する。In the system of the second embodiment, when the electric power is surplus, the compressor 4 and the electric motor / generator 2 are connected by the fitting / disconnecting hand 6, and the compressed air is stored as in the first embodiment. . When the electric power is insufficient, the turbine 5 and the electric motor / generator 2 are connected by the fitting / disconnecting hand 6 to generate electric power as in the first embodiment.

【００１９】尚、圧縮空気槽３は、小型のものを複数個
並列に配置したものが好ましい。図３及び図４は、図１
及び図２に示した基本構成にプラント効率を高めるため
の補助設備を設けた実施例である。The compressed air tank 3 is preferably a plurality of small ones arranged in parallel. 3 and 4 are similar to FIG.
2 is an example in which auxiliary equipment for increasing plant efficiency is provided in the basic configuration shown in FIG.

【００２０】図３に示す第３の実施例に於いては、空気
貯蔵時には、圧縮機兼タービン１で圧縮された圧縮空気
がアフタークーラー兼ヒータ（ＡＣ）で冷却され、圧縮
空気槽３に蓄えられる。In the third embodiment shown in FIG. 3, during air storage, the compressed air compressed by the compressor / turbine 1 is cooled by the aftercooler / heater (AC) and stored in the compressed air tank 3. To be

【００２１】このとき、圧縮空気から回収された熱は熱
媒（ａ）として、熱媒タンク（Ｔ）に蓄えられる。そし
て場合によっては夜間電力などを使って熱媒加熱装置
（ＡＦ）にて熱媒（Ｔ）に蓄えられた熱媒が更に加熱さ
れる。At this time, the heat recovered from the compressed air is stored in the heat medium tank (T) as the heat medium (a). Then, in some cases, the heat medium stored in the heat medium (T) is further heated by the heat medium heating device (AF) using night-time electric power.

【００２２】次に発電時には、圧縮空気槽３から取り出
された圧縮空気がアフタークーラー兼ヒータ（ＡＣ）に
て加熱され、圧縮機兼タービン１に送られる。圧縮機兼
タービン１の外気側に設けられた吸気冷却兼排熱回収
（ＩＣ）もプラントの効率を高めるために、吸気を冷却
し、また排気の熱を回収する。Next, at the time of power generation, the compressed air taken out from the compressed air tank 3 is heated by the aftercooler / heater (AC) and sent to the compressor / turbine 1. The intake air cooling / exhaust heat recovery (IC) provided on the outside air side of the compressor / turbine 1 also cools the intake air and recovers the exhaust heat in order to enhance the efficiency of the plant.

【００２３】図４に示す第４の実施例は、基本的には第
３実施例と同機能であり、第３実施例に比べて圧縮機と
タービンが分かれている分、各補機も分けられている。
上記したように、本発明の実施例に於いては、ガスター
ビンなどを必要としない、圧縮機、空気タービン、電動
機兼発電機、及び小型の圧縮空気槽からなるシステムで
あるので、立地条件が山間部等に限られることなく、ま
た、建設費も比較的安くなる。また、燃料などを必要と
しないのでメンテナンスも容易となり、環境への影響も
ない。The fourth embodiment shown in FIG. 4 has basically the same function as that of the third embodiment. Compared to the third embodiment, the compressor and the turbine are separated, and the respective auxiliary machines are also separated. Has been.
As described above, the embodiment of the present invention is a system that does not require a gas turbine or the like, and includes a compressor, an air turbine, an electric motor / generator, and a small compressed air tank. It is not limited to mountainous areas and the construction cost is relatively low. Further, since no fuel is required, maintenance is easy and there is no impact on the environment.

【００２４】尚、昼間電力単価は約２０円／ｋｗｈ、夜
間電力単価は８円／ｋｗｈ程度であるので、多少のサイ
クルロス、エネルギーロスが生じても吸収可能であり、
本発明による電力平準化の経済的メリットも十分期待で
きる。Since the daytime power unit price is about 20 yen / kwh and the nighttime power unit price is about 8 yen / kwh, even if some cycle loss and energy loss occur, it can be absorbed.
The economic advantages of power leveling according to the present invention can be expected sufficiently.

【００２５】又、高出力・高効率のためには、図１に於
いて燃料使用も可能としておく構成とすることも可能で
ある。又、熱媒加熱装置（ＡＦ）を電気ヒータ（夜間電
力）とすれば電力平準化を更に改善でき燃料は用いなく
とも良い。Further, in order to achieve high output and high efficiency, the fuel can be used in FIG. 1 as well. Further, if the heating medium heating device (AF) is an electric heater (night power), the power leveling can be further improved, and fuel need not be used.

【００２６】[0026]

【発明の効果】以上詳記したように本発明によれば、従
来のガスタービンを用いる構成に比し、構成が簡単で、
建設費が安く、かつ立地条件が特定されないことから、
発電単価を低減できる、経済的に有利な、小・中規模圧
縮空気エネルギー貯蔵式電力平準化システムが提供でき
る。As described above in detail, according to the present invention, the structure is simple as compared with the structure using the conventional gas turbine,
Because construction costs are low and location conditions are not specified,
It is possible to provide an economically advantageous small-to-medium-scale compressed air energy storage type power leveling system that can reduce the power generation unit price.

【図面の簡単な説明】[Brief description of drawings]

【図１】本発明の第１実施例に係るシステムの全体の構
成を示すブロック図。FIG. 1 is a block diagram showing the overall configuration of a system according to a first embodiment of the present invention.

【図２】本発明の第２実施例に係るシステムの全体の構
成を示すブロック図。FIG. 2 is a block diagram showing the overall configuration of a system according to a second embodiment of the present invention.

【図３】本発明の第３実施例に係るシステムの全体の構
成を示すブロック図。FIG. 3 is a block diagram showing the overall configuration of a system according to a third embodiment of the present invention.

【図４】本発明の第４実施例に係るシステムの全体の構
成を示すブロック図。FIG. 4 is a block diagram showing the overall configuration of a system according to a fourth embodiment of the present invention.

【図５】従来のシステム構成を示すブロック図。FIG. 5 is a block diagram showing a conventional system configuration.

【符号の説明】[Explanation of symbols]

１…圧縮機兼タービン、２…電動機兼発電機、３…圧縮
空気槽、４…圧縮機、５…タービン、６…嵌脱接手、７
…弁。1 ... Compressor / turbine, 2 ... Electric motor / generator, 3 ... Compressed air tank, 4 ... Compressor, 5 ... Turbine, 6 ... Fitting / disconnecting joint, 7
…valve.

Claims (2)

【特許請求の範囲】[Claims] 【請求項１】 圧縮機兼タービンと電動機兼発電機を一
軸上に配置し、圧縮機兼タービンの圧縮空気吸排気孔と
圧縮空気槽を連通したことを特徴とする小・中規模圧縮
空気エネルギー貯蔵式電力平準化システム。1. A small / medium-scale compressed air energy storage characterized in that a compressor / turbine, a motor / generator are arranged on one axis, and a compressed air intake / exhaust hole of the compressor / turbine is communicated with a compressed air tank. Power leveling system. 【請求項２】 圧縮機と電動機兼発電機とタービンを嵌
脱接手を介して一軸上に配置し、圧縮機の圧縮空気排気
孔とタービンの吸気孔と圧縮空気槽を弁手段を介して連
通したことを特徴とする小・中規模圧縮空気エネルギー
貯蔵式電力平準化システム。2. A compressor, an electric motor / generator, and a turbine are arranged on one axis through a fitting / disconnecting arm, and a compressed air exhaust hole of the compressor, an intake hole of the turbine, and a compressed air tank are communicated with each other through valve means. A small / medium-scale compressed air energy storage type power leveling system characterized by the above.
JP5190251A 1993-07-30 1993-07-30 Compressed air energy storage type power leveling system Pending JPH0742573A (en)

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