JP5312625B2 - Electricity generation amount calculation device, electric power generation amount calculation method, computer program and recording medium for hydroelectric generation facility - Google Patents
Electricity generation amount calculation device, electric power generation amount calculation method, computer program and recording medium for hydroelectric generation facility Download PDFInfo
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- JP5312625B2 JP5312625B2 JP2012022115A JP2012022115A JP5312625B2 JP 5312625 B2 JP5312625 B2 JP 5312625B2 JP 2012022115 A JP2012022115 A JP 2012022115A JP 2012022115 A JP2012022115 A JP 2012022115A JP 5312625 B2 JP5312625 B2 JP 5312625B2
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- 238000010248 power generation Methods 0.000 title claims description 132
- 238000004364 calculation method Methods 0.000 title claims description 44
- 238000004590 computer program Methods 0.000 title claims description 3
- 230000005611 electricity Effects 0.000 title 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 127
- 238000000034 method Methods 0.000 claims description 7
- 238000003973 irrigation Methods 0.000 claims description 5
- 230000002262 irrigation Effects 0.000 claims description 5
- 238000010586 diagram Methods 0.000 description 5
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J15/00—Systems for storing electric energy
- H02J15/003—Systems for storing electric energy in the form of hydraulic energy
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B11/00—Parts or details not provided for in, or of interest apart from, the preceding groups, e.g. wear-protection couplings, between turbine and generator
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2260/00—Function
- F05B2260/80—Diagnostics
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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
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/50—Energy storage in industry with an added climate change mitigation effect
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Eletrric Generators (AREA)
- Management, Administration, Business Operations System, And Electronic Commerce (AREA)
Description
本発明は、既設用水路を利用した水力発電設備の発電電力量を算定するための水力発電設備の発電電力量算定装置、発電電力量算定方法、発電電力量算定プログラム及びその記録媒体に関する。 The present invention relates to a power generation amount calculation device, a power generation amount calculation method, a power generation amount calculation program, and a recording medium therefor for calculating a power generation amount of a hydropower generation facility that uses an existing waterway.
従来、既設用水路（例えば、農業用水路や灌漑用水路など）を利用した水力発電設備においては、次のようにして発電電力量を算定していた。すなわち、水力発電設備の水力発電機による一定期間の発電出力をＰ、水力発電機の取水口の高さと堰の下流側の水面高さとの落差をＨ、既設用水路に設けた堰の上流側から下流側に向けて一定期間に流れる水の流量データをＱsupply、水力発電機の発電効率をη、重力加速度をｇとして、Ｐ＝Ｈ×Ｑsupply×η×ｇの関係式に基づいて各期間毎の発電出力を算定するとともに、各発電量を合計することにより発電電力量を算定していた（例えば、特開平５−９１７９９号公報、特開２００４−１８０３７８号公報、特開２００５−２８５０３２号公報を参照）。 Conventionally, in a hydroelectric power generation facility using an existing waterway (for example, an agricultural waterway or an irrigation waterway), the amount of generated power has been calculated as follows. That is, P is the power generation output for a certain period of time by the hydroelectric generator of the hydroelectric power generation facility, H is the difference between the intake height of the hydroelectric generator and the water surface height downstream of the weir, and the upstream side of the weir provided in the existing waterway Each period based on the relational expression P = H × Q supply × η × g, where Q supply is the flow rate data of water flowing for a certain period toward the downstream side, η is the power generation efficiency of the hydroelectric generator, and g is the acceleration of gravity. The power generation output was calculated for each power generation amount, and the power generation amount was calculated by summing the power generation amounts (for example, JP-A-5-91799, JP-A-2004-180378, and JP-A-2005-285032). See the publication).
ところで、既設用水路を利用した水力発電設備にあっては、ダム等の大規模な水力発電所と異なり、落差Ｈが小さく、既設用水路の水面形にわずかな乱れが生じても、これによるＨの変動によって水力発電機内を流れる水の流量も大きく変動するので、発電電力量への影響が大きい。これに対して従来の算定方法では、水面形の乱れによるＨの変化を考慮することなくＰを直接Ｑsupplyに基づいて算定していたので、発電電力量を正確に算定することができなかった。 By the way, in a hydroelectric power generation facility using an existing irrigation channel, unlike a large-scale hydroelectric power plant such as a dam, the head H is small, and even if a slight disturbance occurs in the water surface shape of the existing irrigation channel, Since the flow rate of the water flowing through the hydroelectric generator greatly fluctuates due to the fluctuation, it greatly affects the amount of generated power. On the other hand, in the conventional calculation method, P was directly calculated based on the Q supply without considering the change in H due to the disturbance of the water surface shape, so the generated power could not be calculated accurately. .
本発明は、上記の問題に鑑みてなされたものであり、発電電力量を正確に算定することが可能な既設用水路を利用した水力発電設備における発電電力量算定装置、発電電力量算定方法、発電電力量算定プログラム及びその記録媒体を提供することを目的とする。 The present invention has been made in view of the above-described problems, and is a power generation amount calculation device, a power generation amount calculation method, a power generation amount in a hydroelectric power generation facility using an existing waterway that can accurately calculate the amount of power generation. An object is to provide an electric energy calculation program and a recording medium thereof.
上記課題を解決するために、本発明は、既設用水路を利用した水力発電設備の発電電力量を算定する発電電力量算定装置であって、既設用水路と、この既設用水路に設けられた水力発電設備とを表すモデルを記憶するモデル記憶部と、前記水力発電設備について、水位の落差と、当該水力発電設備内の水の流量との関係を示す落差−流量関係を記憶する落差−流量関係記憶部と、前記水力発電設備について、当該水力発電設備内の水の流量と発電効率との関係を示す流量−効率関係を記憶する流量−効率関係記憶部と、単位時間毎の前記既設用水路の水の流量を入力データとして、前記モデルに基づいて、前記水力発電設備の取水口の領域内における水面高さの分布、及び、前記水力発電設備の放水口出口付近における水面高さの分布である前記既設用水路の水位分布を、前記単位時間毎に計算する水位計算部と、前記水位計算部により計算された水位分布から、前記取水口の領域内の平均水面高さと前記放水口出口付近の平均水面高さの差を、前記水力発電設備の前記単位時間毎の水位落差として求め、この水位落差から前記落差−流量関係を参照して、当該水力発電設備内を流れる前記単位時間毎の水の流量を求め、この流量から前記流量−効率関係を参照して前記単位時間毎の発電効率を求め、これら求めた発電効率、水位落差、及び、流量に基づいて、前記水力発電設備の前記単位時間毎の発電電力量を計算する発電電力量計算部と、を備えることを特徴とする。 In order to solve the above-mentioned problems, the present invention provides a power generation amount calculation device for calculating the amount of power generated by a hydroelectric power generation facility using an existing water channel, the existing water channel, and a hydroelectric power generation facility provided in the existing water channel A model storage unit that stores a model that represents the head, and a head-flow rate relationship storage unit that stores a drop-flow rate relationship indicating a relationship between a water level drop and a water flow rate in the hydroelectric power facility for the hydroelectric power generation facility A flow rate-efficiency relationship storage unit that stores a flow rate-efficiency relationship indicating a relationship between a flow rate of water in the hydroelectric power generation facility and power generation efficiency, and water in the existing water channel for each unit time. the flow rate as the input data, based on said model, the distribution of the water height in the region of the intake of the hydroelectric power plants, and is the distribution of the water height at the outlets near the outlet of the hydroelectric power plant The water level distribution of serial existing canal, the level calculator for calculating for each of the unit time, from the calculated level distribution by the water level calculation unit, the average of the mean water surface height and the outlets near the outlet in the region of the intake The difference in water surface height is determined as a water level drop for each unit time of the hydroelectric power generation facility, and the water per unit time flowing through the hydroelectric power generation facility is referred to the head-flow relationship from this water level drop. The flow rate is obtained, the power generation efficiency per unit time is obtained from this flow rate with reference to the flow rate-efficiency relationship, and the unit time of the hydroelectric power generation equipment is calculated based on the obtained power generation efficiency, water level drop, and flow rate. And a generated power amount calculation unit for calculating the generated power amount for each.
以上の構成によれば、既設用水路の水面形の乱れによる落差の変化を考慮した上で発電電力量を算定するので、既設用水路を利用した水力発電設備において、発電電力量を正確に算定することが可能となる。 According to the above configuration, the amount of generated power is calculated in consideration of the change in the head due to the disturbance of the water surface shape of the existing canal. Therefore, the amount of generated power must be accurately calculated in the hydroelectric power generation facility using the existing canal. Is possible.
また、本発明において、前記発電電力量計算部は、計算した前記単位時間毎の発電電力量を所定期間にわたって合計することにより、当該所定期間の発電電力量を計算することを特徴とする。 In the present invention, the generated power amount calculation unit calculates the generated power amount for the predetermined period by summing the calculated generated power amounts per unit time over a predetermined period.
また、本発明は、既設用水路を利用した水力発電設備の発電電力量を算定する発電電力量算定方法であって、既設用水路と、この既設用水路に設けられた水力発電設備とを表すモデルと、前記水力発電設備について、水位落差と、当該水力発電設備内の水の流量との関係を示す落差−流量関係と、前記水力発電設備について、当該水力発電設備内の水の流量と発電効率との関係を示す流量−効率関係とを予め記憶しておき、単位時間毎の前記既設用水路の水の流量を入力データとして、前記記憶したモデルに基づいて、前記水力発電設備の取水口の領域内における水面高さの分布、及び、前記水力発電設備の放水口出口付近における水面高さの分布である前記既設用水路の水位分布を、前記単位時間毎に計算し、前記計算した水位分布から、前記取水口の領域内の平均水面高さと前記放水口出口付近の平均水面高さの差を、前記水力発電設備の前記単位時間毎の水位落差として求め、この水位落差から前記落差−流量関係を参照して、当該水力発電設備内を流れる前記単位時間毎の水の流量を求め、この流量から前記流量−効率関係を参照して前記単位時間毎の発電効率を求め、これら求めた発電効率、水位落差、及び、流量に基づいて、前記水力発電設備の前記単位時間毎の発電電力量を計算する、ことを特徴とする。 In addition, the present invention is a power generation amount calculation method for calculating the amount of power generated by a hydroelectric power generation facility using an existing waterway, a model representing the existing waterway and the hydroelectric power generation facility provided in the existing waterway, Regarding the hydroelectric power generation facility, a drop-flow rate relationship indicating a relationship between a water level drop and a flow rate of water in the hydroelectric power generation facility, and for the hydroelectric power generation facility, a flow rate of water in the hydroelectric power generation facility and power generation efficiency. The flow rate-efficiency relationship indicating the relationship is stored in advance, and the flow rate of water in the existing water channel for each unit time is used as input data based on the stored model in the region of the intake port of the hydroelectric power generation facility. distribution of water height, and, the level distribution of the existing canal is a distribution of water height at outlets near the outlet of the hydroelectric power plant, is calculated for each of the unit time, from the calculated level distribution, The average water surface height difference of the mean water surface height and the outlets near the outlet in the region of the serial intake, determined as the water level difference per unit time of the hydroelectric power plant, the drop from the water level drop - see flow relationship The flow rate of water per unit time flowing in the hydroelectric power generation facility is obtained, the power generation efficiency per unit time is obtained from this flow rate with reference to the flow rate-efficiency relationship, and the obtained power generation efficiency, water level The power generation amount per unit time of the hydroelectric power generation facility is calculated based on the head and the flow rate.
また、本発明は、既設用水路を利用した水力発電設備の発電電力量を算定するためのコンピュータプログラムであって、既設用水路と、この既設用水路に設けられた水力発電設備とを表すモデルを記憶するモデル記憶部と、前記水力発電設備について、水位の落差と、当該水力発電設備内の水の流量との関係を示す落差−流量関係を記憶する落差−流量関係記憶部と、前記水力発電設備について、当該水力発電設備内の水の流量と発電効率との関係を示す流量−効率関係を記憶する流量−効率関係記憶部と、を備えるコンピュータに、単位時間毎の前記既設用水路の水の流量を入力データとして、前記モデルに基づいて、前記水力発電設備の取水口の領域内における水面高さの分布、及び、前記水力発電設備の放水口出口付近における水面高さの分布である前記既設用水路の水位分布を、前記単位時間毎に計算する処理を行わせるステップと、計算された水位分布から、前記取水口の領域内の平均水面高さと前記放水口出口付近の平均水面高さの差を、前記水力発電設備の前記単位時間毎の水位落差として求め、この水位落差から前記落差−流量関係を参照して、当該水力発電設備内を流れる前記単位時間毎の水の流量を求め、この流量から前記流量−効率関係を参照して前記単位時間毎の発電効率を求め、これら求めた発電効率、水位落差、及び、流量に基づいて、前記水力発電設備の前記単位時間毎の発電電力量を計算する処理を行わせるステップと、を実行させることを特徴とする。 The present invention is a computer program for calculating the amount of power generated by a hydroelectric power generation facility using an existing waterway, and stores a model representing the existing waterway and the hydroelectric power generation facility provided in the existing waterway About the model storage unit, the drop-flow relationship storage unit that stores the drop-flow relationship indicating the relationship between the drop in the water level and the flow rate of water in the hydroelectric facility, and the hydroelectric facility A flow rate-efficiency relationship storage unit for storing a flow rate-efficiency relationship indicating a relationship between the flow rate of water in the hydroelectric power generation facility and the power generation efficiency, and a flow rate of water in the existing water channel per unit time. as input data, based on the model, the distribution of the water surface height at intake in the region of the hydroelectric power plants, and, water height at outlets near the outlet of the hydroelectric power plant Of the water level distribution of the existing canal is a distribution, the steps to perform the process of calculating for each unit time, from the calculated level distribution, in the region of the intake MSL height and the outlets near the exit The difference in average water surface height is obtained as a water level drop for each unit time of the hydroelectric power generation equipment, and the water per unit time flowing in the hydroelectric power generation equipment is referred to the head-flow relationship from this water level drop. The flow rate of the hydroelectric power generation equipment is calculated based on the generated power generation efficiency, the water level drop, and the flow rate. And a step of performing a process of calculating the amount of generated electric power per hour.
また、本発明の記録媒体は、上記プログラムを記録したコンピュータ読取可能な記録媒体である。 The recording medium of the present invention is a computer-readable recording medium on which the program is recorded.
＜関連文献とのクロスリファレンス＞
本願は、２００６年７月２０日付けで出願した日本国特願２００６−１９８６４６号に基づく優先権を主張する。この文献を本明細書に援用する。
<Cross-reference with related literature>
This application claims the priority based on Japanese Patent Application No. 2006-198646 filed on July 20, 2006. This document is incorporated herein by reference.
以下、添付図面を参照しながら、本発明の実施形態について説明する。 Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.
図１は、本実施形態における発電電力量算定装置のブロック構成図、図２は水力発電機落差−流量関係を示すグラフ、図３は水力発電機の流量−効率関係を示すグラフ、図４は水力発電機の単位時間毎の発電電力量を示すグラフ、図５Ａ〜図５Ｃは既設用水路内の水位分布の計算例を示す図、図６Ａ，図６Ｂは既設用水路の一例の拡大図、図７Ａ〜図７Ｄは図６Ａ，図６Ｂの既設用水路内の水位分布を示す図、図８は水力発電機の流量データと流量の関係を示すグラフである。なお、図５Ａ〜図５Ｃは、それぞれ図４の（ａ），（ｂ），（ｃ）に対応する時点での水位分布を示している。また、図６Ｂは図６ＡのＹ−Ｚ平面図を示し、図７Ａ〜図７Ｄは水位分布の経時的変化を示している。 FIG. 1 is a block diagram of a power generation amount calculation apparatus according to the present embodiment, FIG. 2 is a graph showing a hydraulic generator drop-flow rate relationship, FIG. 3 is a graph showing a flow rate-efficiency relationship of a hydroelectric generator, and FIG. FIG. 5A to FIG. 5C are diagrams illustrating calculation examples of the water level distribution in the existing water channel, FIGS. 6A and 6B are enlarged views of an example of the existing water channel, and FIG. 7A. FIG. 7D is a graph showing the water level distribution in the existing water channel shown in FIGS. 6A and 6B, and FIG. 8 is a graph showing the relationship between the flow rate data and the flow rate of the hydroelectric generator. 5A to 5C show the water level distribution at the time corresponding to (a), (b), and (c) in FIG. 4, respectively. 6B shows a YZ plan view of FIG. 6A, and FIGS. 7A to 7D show changes in the water level distribution over time.
図１に示す発電電力量算定装置１００は、既設用水路を利用した水力発電設備の発電電力量を算定する装置であってコンピュータにより構成され、モデル記憶部１０と、落差−流量関係記憶部２０と、流量−効率関係記憶部３０と、水位計算部４０と、発電電力量計算部５０と、を備えている。水位計算部４０及び発電電力量計算部５０は、コンピュータがハードディスク等の外部記憶装置に記録された所定のプログラムをメモリに読み出して実行することにより実現され、また、モデル記憶部１０及び落雷−流量関係記憶部２０は等の外部記憶装置上に構築される。なお、上記外部記憶装置はコンピュータに内蔵されていてもよいし、ネットワーク等を介して接続されていてもよい。また、上記プログラムは、例えば、ＤＶＤやＣＤ−ＲＯＭ等の可搬型記憶媒体に記憶されて外部記憶装置にインストールされることとしてもよいし、ネットワーク配信されて外部記憶装置にインストールされることとしてもよい。 A power generation amount calculation device 100 shown in FIG. 1 is a device that calculates the power generation amount of a hydroelectric power generation facility that uses an existing water channel, and is configured by a computer. The model storage unit 10, a head-flow rate relationship storage unit 20, and , A flow rate-efficiency relationship storage unit 30, a water level calculation unit 40, and a power generation amount calculation unit 50 are provided. The water level calculation unit 40 and the generated power amount calculation unit 50 are realized by a computer reading a predetermined program recorded in an external storage device such as a hard disk into a memory and executing it, and the model storage unit 10 and the lightning strike-flow rate. The relationship storage unit 20 is constructed on an external storage device such as. The external storage device may be built in the computer or connected via a network or the like. The above program may be stored in a portable storage medium such as a DVD or CD-ROM and installed in an external storage device, or may be distributed over a network and installed in an external storage device. Good.
モデル記憶部１０は、既設用水路と、この既設用水路に設けられた水力発電設備とを表す二次元モデルを記憶する。水力発電設備は、既設水路に設けられた堰（例えば、図５Ａ〜図５Ｃ，図６Ａ，図６Ｂ，図７に示すクランク型の堰など）と、この堰の上流側に設けられた水力発電機（例えば、水車やイームル工業株式会社製の水中タービンなど）と、を備えたものであり、水力発電機内を流れる水（水中タービンの場合は、その水車部を流れる水）の流量Ｑ発電機は、既設水路を流れる水の流量Ｑsupplyの影響を直接受けて増減変動する（例えば、図８参照）。なお、図４〜図８には、既設用水路に２台の発電機１，２を設けた場合について例示している。 The model storage unit 10 stores a two-dimensional model representing an existing water channel and a hydroelectric power generation facility provided in the existing water channel. The hydroelectric power generation equipment includes a weir (for example, a crank-type weir shown in FIGS. 5A to 5C, 6A, 6B, and 7) provided in an existing water channel, and a hydroelectric power generation provided on the upstream side of the weir. Machine (for example, a water turbine or an underwater turbine manufactured by Emul Industrial Co., Ltd.), and a flow rate Q generator of water flowing in the hydroelectric generator (in the case of an underwater turbine, water flowing in the water turbine section) Is directly affected by the flow rate Q supply of water flowing through the existing water channel and fluctuates (see, for example, FIG. 8). 4 to 8 exemplify a case where two generators 1 and 2 are provided in an existing water channel.
落差−流量関係記憶部２０は、上記水力発電設備について、水位の落差Ｈと、当該水力発電設備内の水の流量Ｑ発電機との関係を示す落差−流量関係（例えば、図２参照）を記憶する。落差Ｈは、例えば、水力発電機の取水口の水位と堰下流側の水位との差を意味する（図６Ｂ参照）。なお、落差−流量関係は、発電機１，２の特性に応じて異なるものである。 The drop-flow rate relationship storage unit 20 has a drop-flow rate relationship (for example, see FIG. 2) indicating the relationship between the water level drop H and the water flow rate Q generator in the hydropower facility. Remember. The drop H means, for example, the difference between the water level at the intake of the hydroelectric generator and the water level downstream of the weir (see FIG. 6B). The drop-flow rate relationship varies depending on the characteristics of the generators 1 and 2.
流量−効率関係記憶部３０は、水力発電設備内の水の流量Ｑ発電機と発電効率ηとの関係を示す流量−効率関係（例えば、図３参照）を記憶する。この落差−効率関係は、落差−流量関係と同様、発電機１，２の特性に応じて異なる。 The flow rate-efficiency relationship storage unit 30 stores a flow rate-efficiency relationship (for example, see FIG. 3) that indicates the relationship between the flow rate Q generator of water in the hydroelectric power generation facility and the power generation efficiency η. This drop-efficiency relationship differs depending on the characteristics of the generators 1 and 2 as well as the drop-flow rate relationship.
水位計算部４０は、単位時間毎の既設用水路を流れる水の流量Ｑsupplyを入力データとして、モデル記憶部１０で記憶された二次元モデルに基づいて、例えば差分法解析により既設用水路の単位時間毎の水位分布（詳しくは、水力発電機の取水口の領域内の水面高さの分布、及び、放水口出口付近の水面高さの分布）を計算する（例えば、図５Ａ〜図５Ｃ，図６Ａ，図６Ｂ，図７参照）。 The water level calculation unit 40 receives, as input data, the flow rate Q supply of water flowing through the existing channel for each unit time, based on the two-dimensional model stored in the model storage unit 10, for example, for each unit time of the existing channel by the differential method analysis. The water level distribution (specifically, the distribution of the water surface height in the region of the intake port of the hydroelectric generator and the distribution of the water surface height near the outlet port) is calculated (for example, FIG. 5A to FIG. 5C, FIG. 6A). FIG. 6B and FIG. 7).
発電電力量計算部５０は、水位計算部４０により計算された水位分布から水力発電設備の単位時間毎の水位落差Ｈを求める。その際、水力発電機の取水口の水位は、取水口の領域内の平均水面高さとし、他方、堰下流側の水位は、放水口出口付近の平均水面高さで評価する。 The power generation amount calculation unit 50 obtains a water level drop H per unit time of the hydroelectric power generation facility from the water level distribution calculated by the water level calculation unit 40. At that time, the water level at the intake of the hydroelectric generator is the average water level in the area of the intake, while the water level downstream of the weir is evaluated by the average water level near the outlet.
次いで、発電電力量計算部５０は、この水位落差Ｈから落差−流量関係記憶部２０で記憶された落差−流量関係を参照して、当該水力発電設備内を流れる単位時間毎の水の流量Ｑ発電機を求める（例えば、図２参照）。さらに、発電電力量計算部５０は、この流量Ｑ発電機から流量−効率関係記憶部３０で記憶された流量−効率関係を参照して単位時間毎の発電効率ηを求める（例えば、図３参照）。発電電力量計算部５０は、これら求めた発電効率η、水位落差Ｈ、及び流量Ｑ発電機に基づいて、水力発電設備の単位時間毎の発電電力量を計算し（例えば、図４参照）、さらにこの発電電力量を所定期間にわたって合計することにより、当該所定期間の発電電力量を計算する。なお、以上の計算は、発電機１，２それぞれについて行うこととし、両者の合計値をもって水力発電設備の発電電力量とする。 Next, the generated power amount calculation unit 50 refers to the drop-flow rate relationship stored in the drop-flow rate relationship storage unit 20 from the water level drop H, and the flow rate Q of water per unit time flowing in the hydroelectric power generation facility. A generator is obtained (see, for example, FIG. 2). Furthermore, the generated power amount calculation unit 50 refers to the flow rate-efficiency relationship stored in the flow rate-efficiency relationship storage unit 30 from this flow rate Q generator to determine the power generation efficiency η per unit time (see, for example, FIG. 3). ). The generated power amount calculation unit 50 calculates the generated power amount per unit time of the hydroelectric power generation facility based on the determined power generation efficiency η, water level drop H, and flow rate Q generator (see, for example, FIG. 4). Furthermore, the amount of generated power for the predetermined period is calculated by summing the amount of generated power over a predetermined period. The above calculation is performed for each of the generators 1 and 2, and the total value of both is used as the amount of power generated by the hydroelectric power generation facility.
以上説明したように、本実施形態の発電電力量算定装置１００は、発電電力量をＱsupplyに基づいて直接を算定するのではなく、水力発電設備内を流れる単位時間毎の水の流量Ｑ発電機に基づいて算定するものである。すなわち、発電電力量算定装置１００は、前述した二次元モデルを用いた差分法解析によりＱsupplyから水位分布を求め、この水位分布からＨを求めるとともに、さらにＨからＱ発電機、Ｑ発電機からηを順に求め、その上で前述したＰ＝Ｈ×Ｑsupply×η×ｇの関係式に基づいて単位時間毎の発電電力量を算定するものである。従って、発電電力量算定装置１００によれば、既設用水路の水面形の乱れによる落差の変化を考慮した上で発電電力量を算定することになるので、既設用水路を利用した水力発電設備において、発電電力量を正確に算定することが可能となる。 As described above, the generated power amount calculation device 100 of this embodiment does not directly calculate the generated power amount based on the Q supply , but the flow rate of water per unit time flowing in the hydroelectric power generation facility Q power generation It is calculated based on the machine . That is, the power generation amount calculation apparatus 100 obtains the water level distribution from the Q supply by the difference method analysis using the above-described two-dimensional model, obtains H from the water level distribution, and further obtains the H from the Q generator and the Q generator. η is obtained in order, and the amount of generated power per unit time is calculated based on the above-described relational expression of P = H × Q supply × η × g. Therefore, according to the generated power amount calculation device 100, the generated power amount is calculated in consideration of the change in the head due to the disturbance of the water surface shape of the existing canal. Therefore, in the hydroelectric power generation facility using the existing canal, It is possible to accurately calculate the amount of electric power.
なお、本発明において、前述した二次元モデル（発電設備の設置位置など）を自動的に変化させながら繰り返し発電電力量を算定し、その発電電力量が最大となる水力発電設備の配置・水路構造を最適な設計として選定できるようにしてもよい。 In the present invention, the power generation amount is repeatedly calculated while automatically changing the above-described two-dimensional model (such as the installation position of the power generation facility), and the arrangement and channel structure of the hydroelectric power generation facility that maximizes the power generation amount May be selected as the optimum design.
また、上記実施形態では、モデル記憶部１０に、既設用水路と、この既設用水路に設けられた水力発電設備とを表すモデルとして二次元モデルを記憶するものとしたが、これに限らず、三次元あるいは一次元のモデルを記憶し、このモデルに基づいて上記実施形態と同様の処理を行うこととしてもよい。 In the above embodiment, the model storage unit 10 stores the two-dimensional model as a model representing the existing water channel and the hydroelectric power generation equipment provided in the existing water channel. Alternatively, a one-dimensional model may be stored, and processing similar to that in the above embodiment may be performed based on this model.
本発明によれば、既設用水路を利用した水力発電設備において、発電電力量を正確に算定することが可能となる。 According to the present invention, it is possible to accurately calculate the amount of generated power in a hydroelectric power generation facility using an existing water channel.
１０ モデル記憶部
２０ 落差−流量関係記憶部
３０ 流量−効率関係記憶部
４０ 水位計算部
５０ 発電電力量計算部
１００ 発電電力量算定装置
DESCRIPTION OF SYMBOLS 10 Model memory | storage part 20 Head-flow rate relationship memory | storage part 30 Flow rate-efficiency relationship memory | storage part 40 Water level calculation part 50 Generated electric energy calculation part 100 Generated electric energy calculation apparatus
Claims (5)
既設用水路と、この既設用水路に設けられた水力発電設備とを表すモデルを記憶するモデル記憶部と、
前記水力発電設備について、水位の落差と、当該水力発電設備内の水の流量との関係を示す落差−流量関係を記憶する落差−流量関係記憶部と、
前記水力発電設備について、当該水力発電設備内の水の流量と発電効率との関係を示す流量−効率関係を記憶する流量−効率関係記憶部と、
単位時間毎の前記既設用水路の水の流量を入力データとして、前記モデルに基づいて、前記水力発電設備の取水口の領域内における水面高さの分布、及び、前記水力発電設備の放水口出口付近における水面高さの分布である前記既設用水路の水位分布を、前記単位時間毎に計算する水位計算部と、
前記水位計算部により計算された水位分布から、前記取水口の領域内の平均水面高さと前記放水口出口付近の平均水面高さの差を、前記水力発電設備の前記単位時間毎の水位落差として求め、この水位落差から前記落差−流量関係を参照して、当該水力発電設備内を流れる前記単位時間毎の水の流量を求め、この流量から前記流量−効率関係を参照して前記単位時間毎の発電効率を求め、これら求めた発電効率、水位落差、及び、流量に基づいて、前記水力発電設備の前記単位時間毎の発電電力量を計算する発電電力量計算部と、
を備えることを特徴とする水力発電設備の発電電力量算定装置。 A power generation amount calculation device for calculating a power generation amount of a hydroelectric power generation facility using an existing waterway,
A model storage unit for storing a model representing an existing water channel and a hydroelectric power generation facility provided in the existing water channel;
About the hydroelectric power generation facility, a drop-flow rate relationship storage unit that stores a drop-flow rate relationship indicating a relationship between a water level drop and a flow rate of water in the hydroelectric power generation facility,
For the hydroelectric power generation facility, a flow rate-efficiency relationship storage unit that stores a flow rate-efficiency relationship indicating the relationship between the flow rate of water in the hydroelectric power generation facility and the power generation efficiency;
Based on the model, the water flow height distribution in the area of the intake port of the hydroelectric power generation facility and the vicinity of the outlet of the hydroelectric power generation facility A water level calculation unit for calculating the water level distribution of the existing irrigation channel, which is a distribution of the water surface height in each unit time , and
From the calculated level distribution by the water level calculation unit, the average difference in water height of MSL height and the outlets near the exit in the area of the intake, as the water level difference per unit time of the hydroelectric power plant Determine the flow rate of water per unit time flowing in the hydroelectric power generation facility with reference to the drop-flow rate relationship from this water level drop, and refer to the flow rate-efficiency relationship from this flow rate for each unit time. A power generation amount calculation unit that calculates the power generation amount per unit time of the hydroelectric power generation facility, based on the power generation efficiency, the water level drop, and the flow rate thus obtained;
A power generation amount calculation device for hydroelectric power generation equipment, comprising:
既設用水路と、この既設用水路に設けられた水力発電設備とを表すモデルと、前記水力発電設備について、水位落差と、当該水力発電設備内の水の流量との関係を示す落差−流量関係と、前記水力発電設備について、当該水力発電設備内の水の流量と発電効率との関係を示す流量−効率関係とを予め記憶しておき、
単位時間毎の前記既設用水路の水の流量を入力データとして、前記記憶したモデルに基づいて、前記水力発電設備の取水口の領域内における水面高さの分布、及び、前記水力発電設備の放水口出口付近における水面高さの分布である前記既設用水路の水位分布を、前記単位時間毎に計算し、
前記計算した水位分布から、前記取水口の領域内の平均水面高さと前記放水口出口付近の平均水面高さの差を、前記水力発電設備の前記単位時間毎の水位落差として求め、この水位落差から前記落差−流量関係を参照して、当該水力発電設備内を流れる前記単位時間毎の水の流量を求め、この流量から前記流量−効率関係を参照して前記単位時間毎の発電効率を求め、これら求めた発電効率、水位落差、及び、流量に基づいて、前記水力発電設備の前記単位時間毎の発電電力量を計算する、ことを特徴とする水力発電設備の発電電力量算定方法。 A power generation amount calculation method for calculating a power generation amount of a hydroelectric power generation facility using an existing waterway,
A model representing an existing water channel, a hydroelectric power generation facility provided in the existing water channel, a head-flow relationship indicating a relationship between a water level drop and a flow rate of water in the hydroelectric power facility, For the hydroelectric power generation facility, a flow rate-efficiency relationship indicating the relationship between the flow rate of water in the hydroelectric power generation facility and the power generation efficiency is stored in advance,
Based on the stored model, using the flow rate of water in the existing water channel per unit time as input data, the distribution of the water surface height in the area of the intake of the hydroelectric power generation facility, and the outlet of the hydroelectric power generation facility Calculate the water level distribution of the existing canal, which is the distribution of the water surface height in the vicinity of the exit, for each unit time ,
From the calculated water level distribution, the difference between the average water surface height in the intake area and the average water surface height in the vicinity of the outlet outlet is obtained as the water level drop per unit time of the hydroelectric power generation facility, and this water level drop The flow rate of water per unit time flowing in the hydroelectric power generation facility is obtained with reference to the head-flow relationship, and the power generation efficiency per unit time is obtained from the flow rate with reference to the flow rate-efficiency relationship. A method for calculating the amount of generated power of a hydroelectric power generation facility, wherein the amount of generated power per unit time of the hydroelectric power generation facility is calculated on the basis of the determined power generation efficiency, water level drop, and flow rate.
単位時間毎の前記既設用水路の水の流量を入力データとして、前記モデルに基づいて、前記水力発電設備の取水口の領域内における水面高さの分布、及び、前記水力発電設備の放水口出口付近における水面高さの分布である前記既設用水路の水位分布を、前記単位時間毎に計算する処理を行わせるステップと、
計算された水位分布から、前記取水口の領域内の平均水面高さと前記放水口出口付近の平均水面高さの差を、前記水力発電設備の前記単位時間毎の水位落差として求め、
この水位落差から前記落差−流量関係を参照して、当該水力発電設備内を流れる前記単位時間毎の水の流量を求め、この流量から前記流量−効率関係を参照して前記単位時間毎の発電効率を求め、これら求めた発電効率、水位落差、及び、流量に基づいて、前記水力発電設備の前記単位時間毎の発電電力量を計算する処理を行わせるステップと、
を実行させることを特徴とする水力発電設備の発電電力量算定プログラム。 A computer program for calculating the amount of power generated by a hydroelectric power generation facility using an existing waterway, the model storage unit storing a model representing the existing waterway and the hydroelectric power generation facility provided in the existing waterway, and For a hydroelectric power generation facility, a drop-flow rate relationship storage unit that stores a drop-flow rate relationship indicating a relationship between a water level drop and a flow rate of water in the hydroelectric power generation facility, and the hydroelectric power generation facility, A computer having a flow rate-efficiency relationship storage unit that stores a flow rate-efficiency relationship indicating a relationship between the flow rate of water and power generation efficiency;
Based on the model, the water flow height distribution in the area of the intake port of the hydroelectric power generation facility and the vicinity of the outlet of the hydroelectric power generation facility Performing a process of calculating the water level distribution of the existing irrigation channel, which is a distribution of the water surface height in each unit time , and
From the calculated water level distribution, the difference between the average water surface height in the area of the intake and the average water surface height near the outlet outlet is determined as the water level drop per unit time of the hydroelectric power generation facility,
The flow rate of water per unit time flowing in the hydroelectric power generation facility is obtained from the water level head by referring to the head-flow relationship, and the power generation per unit time is obtained from the flow rate by referring to the flow-efficiency relationship. Determining the efficiency, and performing a process of calculating the generated power per unit time of the hydroelectric power generation facility based on the determined power generation efficiency, water level drop, and flow rate;
A program for calculating the amount of electric power generated by a hydroelectric power generation facility.
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| JPH10122118A (en) * | 1996-10-22 | 1998-05-12 | Mitsubishi Electric Corp | Speed governing control device for water turbine and reversible pump-turbine |
| JP3913487B2 (en) * | 2001-03-21 | 2007-05-09 | 東京電力株式会社 | Hydropower station speed control device and speed control method for hydropower station |
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