JP2004019111A

JP2004019111A - Operation support device

Info

Publication number: JP2004019111A
Application number: JP2002171217A
Authority: JP
Inventors: Kazuya Hirabayashi; 平林　和也; Akio Sato; 佐藤　明雄
Original assignee: Yaskawa Electric Corp
Current assignee: Yaskawa Electric Corp
Priority date: 2002-06-12
Filing date: 2002-06-12
Publication date: 2004-01-22
Anticipated expiration: 2022-06-12
Also published as: JP4035763B2

Abstract

<P>PROBLEM TO BE SOLVED: To provide an operation support device capable of reducing the possibility of causing worsening of water quality. <P>SOLUTION: This operation support device is provided with a gate 6 feeding water into a reinforcing pipe from a join pump station, a pump station water feeding pump 10 feeding collected sewage into the emerging pump station from a drain pump station after rainfall, a drain judging device 12 predicting and judging the results which become a standard for whether or not storage in a pipe is to be performed an operation method judging device 13 judging whether or not pump operation is to be performed based on the results of the drain judging device, a pump well water level judging device 14 at the drain pump station judging the storage amount in the pipe which becomes an index for opening or closing the gate, a pump controller 15 performing the control of respective treatment station water feeding pump, emerging pump station drain pump, drain pump station drain pump, and pump station water feeding pump and control computation for opening and closing the gate feeding water into the reinforcing pipe from the emerging pump station, and a pump operation command device 16 giving a command to the pumps. <P>COPYRIGHT: (C)2004,JPO

Description

【０００１】
【発明の属する技術分野】
本発明は、合流式のポンプ場において、ポンプ場に流入する汚水、雨水を河川へ排水する量を減少させることが出来る運転支援装置に関するものである。
【０００２】
【従来の技術】
従来の運転支援装置を図２に示す。合流式のポンプ場の運転は、晴天時（小降雨含）、中降雨、大降雨の３つに分けられる。晴天時（小降雨含）は汚水が合流管に流入し、送水ポンプにより下水処理場へ送水する。中降雨時は送水ポンプによる下水処理場への送水と排水ポンプによる河川への排水が行われる。大降雨時は合流ポンプ場では送水ポンプによる下水処理場への送水と排水ポンプによる河川への排水が行われ、排水ポンプ場では分水堰から越流した雨水を河川へ排水するため排水ポンプが稼動する。
１は雨量計で、地上雨量計、レーダ雨量計などから収集した降雨量を測定する。
２は合流管水位計で汚水、雨水が混合した下水が流入する合流管の水位を測定する。
３は増補管水位計で、合流管の分水堰から越流した下水が流入する増補管の水位を測定する。
４はポンプ井水位計で、合流ポンプ場、排水ポンプ場のポンプ井の水位を測定する。
５は流量計で、ポンプ場から処理場へ送水する流量、河川へ排水する流量を測定する。
７は処理場送水ポンプで、合流ポンプ場へ流入した下水を下水処理場へ送水するポンプである。
８は合流ポンプ場排水ポンプで、処理場送水ポンプで送水してもポンプ井水位が上昇する場合に、浸水防止のために稼動するポンプである。
９は排水ポンプ場排水ポンプで、大降雨時に合流管の分水堰から越流した下水を河川へ排水するポンプである。
１１は計測値蓄積装置で、雨量計、合流管水位計、増補管水位計、ポンプ井水位計、流量計などから収集したデータを蓄積する装置である。
１５はポンプ制御装置で、送排水ポンプ制御装置１５５で構成されている。
１５５は送排水ポンプ制御装置で、ポンプ場へ流入した下水を処理場や河川へ送水、排水する。晴天時、小降雨時は合流ポンプ場へ流入した汚水を、７の処理場送水ポンプにてポンプ井水位一定制御を行い、処理場へ送水する。中降雨時は、７の処理場送水ポンプだけではポンプ場が浸水する可能性があるため、８の合流ポンプ場排水ポンプにて流入した下水を河川へ放流する。大降雨時は、７の処理場送水ポンプ、８の合流ポンプ場排水ポンプが稼動するのに加え、合流管の分水堰から越流した下水が増補管へ流入し、排水ポンプ場へ流入する。排水ポンプ場へ流入した下水は９の排水ポンプ場排水ポンプにより河川へ放流される。
１６はポンプ運転指令装置で、処理場送水ポンプ指令装置１６２、合流ポンプ場排水ポンプ指令装置１６３、排水ポンプ場排水ポンプ指令装置１６４で構成されている。
１６２は処理場送水ポンプで、晴天時、小降雨時において、１５５の送排水ポンプ制御装置にて計算された結果に基づいてポンプへ信号を送る。
１６３は合流ポンプ場排水ポンプで、中降雨時において、１５５の送排水ポンプ制御装置にて計算された結果に基づいてポンプへ信号を送る。
１６４は排水ポンプ場排水ポンプで、大降雨時において、１５５の送排水ポンプ制御装置にて計算された結果に基づいてポンプへ信号を送る。
【０００３】
【発明が解決しようとする課題】
このような運転支援装置では、合流ポンプ場、排水ポンプ場へ流入した下水の一部が未処理のまま河川へ放流されることになる。このような下水は、公共用水域の水質悪化を引き起こす原因となる。
そこで、本発明は増補管への下水の貯留を可能とすることにより、公共水域への下水の放流量を減少させ、水質悪化を引き起こす可能性を低くできる運転支援装置の提供を目的とする。
【０００４】
【課題を解決するための手段】
上記問題を解決するため、本発明はつぎの構成にしている。
（１）汚水、雨水を処理場へ送水し河川へ排水する合流ポンプ場、雨水を河川へ放流する排水ポンプ場、管渠およびポンプ井等の水位を測定する水位計と、ポンプの送水量を測定する流量計と、処理場へ送水する送水ポンプと、合流ポンプ場から河川へ放流する合流ポンプ場排水ポンプと、排水ポンプ場から河川へ排水する排水ポンプ場排水ポンプと、計測器から収集したデータを蓄積する計測値蓄積装置と、ポンプの制御演算を行うポンプ制御装置と、各ポンプへ指令を送るポンプ運転指令装置とを備えた運転支援装置において、管内貯留を行うため、合流ポンプ場から増補管への送水を行うゲートと、降雨後に排水ポンプ場から合流ポンプ場へ貯留した下水を送水するポンプ場送水ポンプと、管内貯留を行うかの基準となる結果を予測、判定する排水判定装置と、前記排水判定装置の結果からどのポンプ運転を行うかの判定を行う運転方法判定装置と、ゲートの開閉の指標となる管内貯留量を判断する排水ポンプ場ポンプ井水位判定装置と、処理場送水ポンプ、合流ポンプ場排水ポンプ、排水ポンプ場排水ポンプ、ポンプ場送水ポンプの制御、合流ポンプ場から増補管への送水を行うゲートの開閉の制御演算を行うポンプ制御装置と、前記ポンプ制御装置で演算された結果に基づいてポンプへ指令を与えるポンプ運転指令装置とを備えたものである。
（２）前記排水判定装置は、合流ポンプ場へ流入する流入量を予測する流入量予測装置、合流管の管渠水位を予測する管渠水位予測装置、管渠内に流入した下水が増補管へ越流したかを判定する合流管水位判定装置を備えたものである。
（３）前記ポンプ制御装置は、中降雨時に管内貯留を行うための制御を行う管内貯留制御装置と、中降雨時に管内貯留を行わず、河川へ排水する制御を行う合流排水制御装置と、大降雨時に河川へ排水する制御を行う排水制御装置と、晴天時に処理場への送水を行う送水制御装置とを備えたものである。
（４）前記ポンプ運転指令装置は、降雨後、増補管に貯留した下水を合流ポンプ場へ送水するための指令を出力するポンプ場送水ポンプ指令装置と、合流ポンプ場へ流入した下水を処理場へ送水するポンプへの指令を出力する処理場送水ポンプ指令装置と、合流ポンプ場へ流入した下水を河川へ排水するポンプへの指令を出力する合流ポンプ場排水ポンプ指令装置と、排水ポンプ場へ流入した下水を河川へ排水するポンプの指令を出力する排水ポンプ場排水ポンプ指令装置とを備えたものである。
上記手段により、本発明は、合流ポンプ場にゲートの設置、排水ポンプ場にポンプ場送水ポンプの設置、ポンプ制御、管渠水位の監視を行うことで、増補管へ下水の貯留が可能となるため公共水域への下水の放流量を減少させることが可能となる。また、流入量予測、水位予測を行うことで浸水の可能性を低くした管内貯留を行うことができる
【０００５】
【発明の実施の形態】
以下、本発明の実施例を図１を参照して詳細に説明する。図１は本発明の運転支援装置を示す模式図である。従来技術と同じ符号のものは説明を省略する。
１０はポンプ場送水ポンプであり、降雨後、増補管内貯留した下水を合流ポンプ場へ送水する。
１２は排水判定装置であり、流入量予測装置１２１、管渠水位予測装置１２２、増補管水位判定装置１２３のいずれかで構成される。
１２１は流入量予測装置であり。合流ポンプ場へ流入する流入量を予測する。前記計測値蓄積装置１１から入力されたデータを自己回帰モデルに適用するためのデータ作成と計測値蓄積装置１１に蓄積された降雨量と水位と流入量の直近数十分のデータを作成する。直近数十分間、雨量計１において、降雨量が観測されたかどうかをチェックし、自己回帰モデルに入力するデータ列を作成する。天候チェック時にチェックされた結果が晴天日の時はデータ列の加工を行わず、雨天日の時は、直近に計測された降雨量、水位、流入量のみをデータ列に追加する。このようにしてデータの加工を行い、降雨量、水位、流入量の関係を明確にモデル化できるようにした。しかし、雨天期間が終了しても、しばらく雨の影響を受けるため雨天期間終了後、数十分間はデータの追加を行う。作成されたデータ列から自己回帰モデルを作成する。作成されたモデルと直近のデータから、流入量の予測値を演算する。
いま、時刻ｎにおけるプロセスの状態をｋ次元の全変数ベクトルＸ（ｎ）、時刻ｎよりｍ時点前の全変数ベクトルをＸ（ｎ−ｍ）、白色ノイズベクトルをＵ（ｎ）、自己回帰モデルの回帰係数をＡ（ｍ）、自己回帰モデルの最適次数をＭで表すと、その自己回帰表現は、
【０００６】
【数１】

【０００７】
で表される。
従って自己回帰モデルの作成とは、自己回帰係数、白色ノイズベクトルの分散および自己回帰モデルの最適次数の決定に帰結される。
自己回帰係数Ａ（ｍ）は、要素をＡｉｊ（ｍ）とし、次の連立方程式をｉ＝１，２，３，・・・・，ｋについて解くことにより求められる。
但し、Ｘｉ、Ｘｊの相互分散をＲｉｊ（ｌ）、自己回帰係数の要素をＡｉｊ（ｍ）とすると
【０００８】
【数２】

【０００９】
という連立一次方程式をｉ＝１，２，．．．，ｋについて解けばＡｉｊ（ｍ）が求められる。
白色ノイズベクトルＵ（ｎ）の要素をεｉ（ｎ）とすると、その残差分散値σｉ^２は次のようになる。
【００１０】
【数３】

【００１１】
なお、モデルの最適次数Ｍは予測誤差を表す（５）式のＭＦＰＥ（Ｍ）を最小にする値である。
【００１２】
【数４】

【００１３】
但し、Ｎはデータ数、‖ｄ_Ｍ‖はＵ（ｎ）の分散共分散行列推定値である。またＭＦＰＥはＭｕｌｔｉｐｌｅ　Ｆｉｎａｌ　Ｐｒｅｄｉｃｔｉｏｎ　Ｅｒｒｏｒの頭文字である。
このようにして自己回帰係数、白色ノイズの分散および最適モデル次数が求められ、自己回帰モデルが作成される。従って、流入量の予測を行うために必要な、流入量と水位と降雨量との関係式を自己回帰モデルから求めることができる。自己回帰モデルの更新は、直近のデータを使用することを目的に１日１回行う。そして、自己回帰モデルで作成したモデルに入力するためのデータ列を作成する。作成した自己回帰モデルと予測値用データで作成したデータ列から統計的に類推可能な流入量の数十分先の予測値を演算する。自己回帰モデルを用いた時の数十分先の予測は次のように表される。
【００１４】
【数５】

【００１５】
しかし、１点先以上の予測が必要なため、１点先以上の予測には、流入量は予測値を使用し、水位、降雨量は前回の降雨量を使用する。また、数時間先まで予測した降雨量データがあれば、流入量の予測にそれを利用し、数時間先の流入量も予測することができる。このようにして得られた流入量の予測値Ｑ（０）_ｐ，Ｑ（１）_ｐ・・・を運転方法判定装置１３に出力する。
１２２は管渠水位予測装置で、流入量予測装置１２１と同様に自己回帰モデルを適用し、水位の予測を行う。自己回帰モデルに適用するシステム変数は降雨量と水位である。モデル式は流入量予測装置と同様のため省略する。水位の予測結果を運転方法判定装置１３に出力する。
１２３は合流管水位判定装置で、合流管を越流して増補管へ下水が流入したかどうかを判定する装置である。水位が管径になった時、増補管への流入があると判定する。その結果を運転方法判定装置１３に出力する。
１３は運転方法判定装置で、排水判定装置１２で得られた結果を基に、どのポンプ運転を行うかを判定する。１２１流入量予測装置、１２２管渠水位予測装置の予測結果、１２３合流管水位判定装置での水位が判定基準値を超えたかどうかを判定する。流入量、水位の予測値、合流管水位のいずれも上限値の判定基準値より低ければ、晴天とみなし、１５４の送水制御装置へ結果を出力する。流入量、水位の予測値、合流管水位のいずれかが判定基準値を超えていれば、大降雨とみなし、１５３の排水制御装置へ出力する。流入量、水位の予測値、合流管水位のいずれも上限値の判定基準値を超えていなくて、合流管の水位が下限値の判定基準値より高ければ、中降雨とみなし１４の排水ポンプ場ポンプ井水位判定装置へ出力する。
１４は排水ポンプ場ポンプ井水位判定装置で、管内貯留量を確認するため排水ポンプ場のポンプ井水位を判定する。ポンプ井水位が判定基準値を超えた場合、これ以上の管内貯留はできないため、その結果を１５２の合流排水制御装置へ出力する。排水ポンプ場のポンプ井水位が判定基準値を超えていなければ、管内貯留は可能なためその結果を１５１の管内貯留制御装置へ出力する。
１５はポンプ制御装置で、管内貯留制御装置１５１と合流排水制御装置１５２と排水制御装置１５３と送水制御装置１５４で構成されている。
１５１は管内貯留制御装置で、中降雨時、排水ポンプ場にて管内貯留を行う。処理場送水ポンプは合流ポンプ場へ流入した下水をポンプ井水位一定などの運転を行い処理場へ下水を送水する。合流ポンプ場排水ポンプはポンプ井水位が上昇しないようにポンプの制御を行い、下水を河川へ放流する。また、増補幹線にて管内貯留を行うため６のゲートは開とする。
１５２は合流排水制御装置で、中降雨時、管内貯留量が満水のため、管内貯留を行わない運転を行う。処理場送水ポンプは合流ポンプ場へ流入した下水をポンプ井水位一定などの運転を行い処理場へ下水を送水する。合流ポンプ場排水ポンプはポンプ井水位が上昇しないようにポンプの制御を行い、下水を河川へ放流する。また、増補幹線にて管内貯留を行わないため６のゲートは閉とする。
１５３は排水制御装置で、大降雨時に、処理場送水ポンプは合流ポンプ場へ流入した下水が処理場の負荷にならない量の下水を送水する。合流ポンプ場排水ポンプはポンプ井水位が上昇しないようにポンプの制御を行い、河川へ下水を放流する。排水ポンプ場では、増補管へ下水が流入した場合は、浸水防除を第一に考えるため管内貯留は行わず、流入した下水を河川へ放流する。
１５４は送水制御装置で、処理場送水ポンプは合流ポンプ場へ流入した下水をポンプ井水位一定などの運転を行い、下水を処理場へ送水する。ポンプ場送水ポンプは降雨後、増補管に貯留した下水を処理場へ送水するため、先ず合流ポンプ場へ送水する。
１６はポンプ運転指令装置で、ポンプ場送水ポンプ指令装置１６１、処理場送水ポンプ指令装置１６２、合流ポンプ場排水ポンプ指令装置１６３、排水ポンプ場排水ポンプ指令装置１６４で構成されている。
１６１はポンプ場送水ポンプ指令装置で、晴天時において、１５のポンプ制御装置にて計算された結果に基づいてポンプへ信号を送る。
１６２は処理場送水ポンプ指令装置で、晴天時、小降雨時において、１５のポンプ制御装置にて計算された結果に基づいてポンプへ信号を送る。
１６３は合流ポンプ場排水ポンプ指令装置で、中降雨時において、１５のポンプ制御装置にて計算された結果に基づいてポンプへ信号を送る。
１６４は排水ポンプ場排水ポンプ指令装置で、大降雨時において、１５のポンプ制御装置にて計算された結果に基づいてポンプへ信号を送る。
つぎに、動作について説明する。
雨天時、下水は合流管に流れ込み合流ポンプ場に流入する。排水判定装置１２で流入量が多いと判定された場合は、処理場へ送水することが不可能であり、その場合は、運転方法判定装置１３にて管内貯留を可能と判定する。そして、排水ポンプ場ポンプ井水位判定装置１４で下水の管内貯留量を判定し、ポンプ制御装置１５の制御で、貯留量が基準値になるまでゲート６を開にし、下水の管内貯留量が基準値になるとゲート６を閉にする。
排水判定装置１２で、流入量がさらに多いと判定された場合は、合流管の分水堰から下水が越流する。その場合、運転方法判定装置１３で管内貯留が不可能と判定され、ポンプ制御装置１５からの指令で、排水ポンプ場へ流入した下水を、直ちに河川へ排水する。
【００１６】
【発明の効果】
以上述べたように、本発明の運転支援装置によれば、合流ポンプ場へのゲートの設置、排水ポンプ場へのポンプ場送水ポンプの設置、流入量予測、水位予測、ポンプ制御、管渠水位の監視を行うことにより、増補管へ下水の貯留を可能とし公共水域への下水の放流量を減少させることができ、公共水域の水質悪化を引き起こす可能性を低くした管内貯留ができるなどの効果がある。
【図面の簡単な説明】
【図１】本発明の運転支援装置を示す模式図。
【図２】従来の運転支援装置を示す模式図。
【符号の説明】
１　雨量計
２　合流管水位計
３　増補管水位計
４　ポンプ井水位計
５　流量計
６　ゲート
７　処理場送水ポンプ
８　合流ポンプ場排水ポンプ
９　排水ポンプ場排水ポンプ
１０　ポンプ場送水ポンプ
１１　計測値蓄積装置
１２　排水判定装置
１２１　流入量予測装置
１２２　管渠水位予測装置
１２３　合流管水位判定装置
１３　運転方法判定装置
１４　排水ポンプ場ポンプ井水位判定装置
１５　ポンプ制御装置
１５１　管内貯留制御装置
１５２　合流排水制御装置
１５３　排水制御装置
１５４　送水制御装置
１５５　送排水制御装置
１６　ポンプ運転指令装置
１６１　ポンプ場送水ポンプ指令装置
１６２　処理場送水ポンプ指令装置
１６３　合流ポンプ場排水ポンプ指令装置
１６４　排水ポンプ排水ポンプ指令装置[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a driving support device that can reduce the amount of wastewater and rainwater draining into a pumping station to a river in a combined pumping station.
[0002]
[Prior art]
FIG. 2 shows a conventional driving support device. The operation of the combined pumping station is divided into three types: fine weather (including small rainfall), medium rainfall, and heavy rainfall. During fine weather (including small rainfall), sewage flows into the confluence pipe and is sent to a sewage treatment plant by a water pump. During moderate rainfall, water is supplied to the sewage treatment plant by the water pump and drained to the river by the drain pump. At the time of heavy rainfall, water is sent to the sewage treatment plant by a water supply pump and drained to a river by a drainage pump at the combined pumping station, and a drainage pump is installed at the drainage pumping station to drain rainwater overflowing from the diversion weir to the river. It works.
A rain gauge 1 measures rainfall collected from a ground rain gauge, a radar rain gauge, or the like.
2 is a merging pipe water level meter for measuring the water level of a merging pipe into which sewage mixed with sewage and rainwater flows.
Reference numeral 3 denotes an intensifier pipe water level meter that measures the water level of the intensifier pipe into which sewage flowing from the diversion weir of the confluence pipe flows.
Reference numeral 4 denotes a pump well water level gauge, which measures the water level of the pump wells at the merging pump station and the drainage pump station.
Reference numeral 5 denotes a flow meter which measures a flow rate of water sent from a pump station to a treatment station and a flow rate of drainage to a river.
Numeral 7 denotes a water pump for the treatment plant, which pumps the sewage flowing into the combined pumping station to the sewage treatment plant.
Numeral 8 denotes a drainage pump at the merging pump station, which operates to prevent flooding when the water level in the pump well rises even when water is supplied by the water pump at the treatment plant.
Reference numeral 9 denotes a drainage pump station drainage pump that drains sewage overflowing from a diversion weir of a confluence pipe into a river during a heavy rainfall.
Reference numeral 11 denotes a measured value accumulating device which accumulates data collected from a rain gauge, a combined pipe water level meter, an augmented pipe water level meter, a pump well water level meter, a flow meter, and the like.
Reference numeral 15 denotes a pump control device, which is constituted by a feed / drain pump control device 155.
Reference numeral 155 denotes a water supply / drainage pump control device which sends and discharges sewage flowing into a pumping station to a treatment plant or a river. During fine weather and small rainfall, the sewage flowing into the combined pumping station is controlled to the pump well water level constant by the treatment plant water supply pump 7 and then sent to the treatment plant. During middle rainfall, the pumping station may be flooded with only the treatment plant water supply pump, so the sewage that has flowed into the river is discharged to the river by the confluence pumping station drainage pump. At the time of heavy rainfall, in addition to the operation of the water treatment pump 7 and the drainage pump 8 at the confluence pump station, the sewage flowing from the diversion weir of the confluence pipe flows into the supplementary pipe and flows into the drainage pump station. . The sewage that has flowed into the drainage pumping station is discharged into the river by nine drainage pumping stations.
Reference numeral 16 denotes a pump operation command device, which includes a treatment plant water supply pump command device 162, a combined pump station drain pump command device 163, and a drain pump station drain pump command device 164.
Reference numeral 162 denotes a treatment plant water supply pump which sends a signal to the pump based on the result calculated by the 155 water supply / drainage pump control device in fine weather and small rainfall.
A junction pump station drain pump 163 sends a signal to the pump based on the result calculated by the 155 feed / drain pump control device during middle rainfall.
Reference numeral 164 denotes a drainage pump station drainage pump, which sends a signal to the pump based on the result calculated by the 155 feed / drainage pump control device during heavy rainfall.
[0003]
[Problems to be solved by the invention]
In such a driving support device, part of the sewage flowing into the merging pumping station and the drainage pumping station is discharged to the river without being treated. Such sewage causes deterioration of water quality in public water bodies.
Therefore, an object of the present invention is to provide a driving support device capable of storing sewage in a supplementary pipe, thereby reducing a discharge amount of sewage to public waters and reducing a possibility of causing deterioration of water quality.
[0004]
[Means for Solving the Problems]
In order to solve the above problem, the present invention has the following configuration.
(1) Combined pumping station that sends sewage and rainwater to a treatment plant and drains it to a river, drainage pumping station that discharges rainwater to a river, a water level meter that measures the water level of pipes, pump wells, etc. Collected from a flow meter to measure, a water pump to feed water to the treatment plant, a drainage pump from the drainage pumping station to the river, a drainage pump from the drainage pumping station to drain from the drainage pump, and a meter. In the operation support device equipped with a measured value accumulating device that accumulates data, a pump control device that performs control calculation of the pump, and a pump operation command device that sends a command to each pump, in order to perform in-pipe storage, from the merging pump station Forecasting the gate for water supply to the augmented pipe, the pumping station water supply pump for supplying sewage stored from the drainage pumping station to the merged pumping station after rainfall, and predicting the results to be used as a reference for storage in the pipe, A drainage judging device to determine, a driving method judging device for judging which pump operation is to be performed from the result of the drainage judging device, and a drainage pump station pump well water level judging for judging a storage amount in a pipe as an index of opening and closing of a gate A pump control device that controls the operation of the equipment, the treatment plant water pump, the combined pumping station drainage pump, the drainage pumping station drainage pump, the control of the pumping station water supply pump, and the opening and closing control of the gate that sends water from the combined pumping station to the supplementary pipe. And a pump operation command device for giving a command to the pump based on the result calculated by the pump control device.
(2) The drainage determination device includes an inflow amount prediction device that predicts an inflow amount flowing into a merging pump station, a culvert water level prediction device that predicts a culvert water level of a merging pipe, and a sewage flowing into the culvert. It is provided with a merging pipe water level judging device for judging whether the water has overflowed.
(3) The pump control device includes an in-pipe storage control device that performs control for performing in-pipe storage during middle rainfall, and a combined drainage control device that performs control to perform drainage to a river without performing in-pipe storage during middle rainfall. It is provided with a drainage control device that controls drainage to a river during rainfall, and a water supply control device that sends water to a treatment plant in fine weather.
(4) The pump operation command device includes a pump station water supply pump command device that outputs a command for sending the sewage stored in the augmented pipe to the combined pump station after rainfall, and a sewage flowing into the combined pump station. To the treatment plant water supply pump command device that outputs commands to the pumps that feed water to the pump, to the merge pump station drain pump command device that outputs commands to the pumps that drain the sewage flowing into the river into the river, and to the drain pump station A drain pump station that outputs a command for a pump that drains inflowed sewage to a river.
By the above means, the present invention enables storage of sewage in the supplementary pipe by installing a gate at the merging pump station, installing a pump station water pump at the drainage pump station, controlling the pump, and monitoring the sewer water level. Therefore, it is possible to reduce the discharge amount of sewage into public waters. In addition, by performing inflow rate prediction and water level prediction, it is possible to perform in-pipe storage with a reduced possibility of flooding.
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an embodiment of the present invention will be described in detail with reference to FIG. FIG. 1 is a schematic diagram showing a driving support device of the present invention. The description of the same reference numerals as in the prior art is omitted.
Reference numeral 10 denotes a pumping station water supply pump, which sends the sewage stored in the augmented pipe to the combined pumping station after rainfall.
Reference numeral 12 denotes a drainage judging device, which is constituted by any of an inflow amount estimating device 121, a sewer water level estimating device 122, and an augmented pipe water level judging device 123.
Reference numeral 121 denotes an inflow amount prediction device. Predict the amount of inflow to the merging pump station. Data creation for applying the data input from the measurement value accumulating device 11 to the autoregressive model and data of the last several ten minutes of rainfall, water level and inflow accumulated in the measurement value accumulating device 11 are created. In the last several tens of minutes, the rain gauge 1 checks whether or not rainfall is observed, and creates a data sequence to be input to the autoregressive model. If the result of the weather check is a sunny day, the data train is not processed. If the result is rainy, only the most recently measured rainfall, water level, and inflow are added to the data train. By processing the data in this way, the relationship between rainfall, water level and inflow can be clearly modeled. However, even if the rainy period ends, data is added for several tens of minutes after the rainy period ends because of the influence of rain for a while. Create an autoregressive model from the created data sequence. A predicted value of the inflow is calculated from the created model and the latest data.
Now, the state of the process at time n is k-dimensional full variable vector X (n), all variable vectors m points before time n are X (nm), white noise vector is U (n), autoregressive model If the regression coefficient of is represented by A (m) and the optimal order of the autoregressive model by M, the autoregressive expression is
[0006]
(Equation 1)

[0007]
Is represented by
Therefore, the creation of an autoregressive model results in the determination of the autoregressive coefficient, the variance of the white noise vector, and the optimal order of the autoregressive model.
The auto-regression coefficient A (m) is obtained by solving the following simultaneous equations for i = 1, 2, 3,..., K, with the elements being Aij (m).
Here, when the mutual variance of Xi and Xj is Rij (l) and the element of the autoregressive coefficient is Aij (m),
(Equation 2)

[0009]
Let the simultaneous linear equations i = 1, 2,. . . , K, Aij (m) is obtained.
Assuming that the element of the white noise vector U (n) is εi (n), the residual variance σi ² is as follows.
[0010]
[Equation 3]

[0011]
Note that the optimal order M of the model is a value that minimizes MFPE (M) in the equation (5) representing the prediction error.
[0012]
(Equation 4)

[0013]
Here, N is the number of data, and {d _M } is the variance-covariance matrix estimated value of U (n). MFPE is an acronym for Multiple Final Prediction Error.
In this way, the auto-regression coefficient, the variance of the white noise, and the optimal model order are obtained, and an auto-regression model is created. Therefore, a relational expression between the inflow amount, the water level, and the rainfall amount necessary for predicting the inflow amount can be obtained from the autoregressive model. The autoregressive model is updated once a day for the purpose of using the latest data. Then, a data string to be input to the model created by the autoregressive model is created. A predicted value that is several ten minutes ahead of the inflow amount that can be statistically inferred is calculated from the created autoregressive model and the data sequence created from the predicted value data. The prediction of several tens minutes ahead when using the autoregressive model is expressed as follows.
[0014]
(Equation 5)

[0015]
However, since prediction at one point or more is required, the predicted value is used for the inflow and the previous rainfall is used for the water level and the rainfall for the prediction at one point or more. Also, if there is rainfall data predicted several hours ahead, it can be used to predict the inflow, and the inflow can be predicted several hours ahead. The predicted values Q (0) _p , Q (1) _p ... Of the inflow amount thus obtained are output to the driving method determination device 13.
Reference numeral 122 denotes a pipe water level prediction device, which applies an auto-regression model similarly to the inflow amount prediction device 121 to predict a water level. The system variables applied to the autoregressive model are rainfall and water level. The model equation is omitted because it is the same as that of the inflow amount prediction device. The prediction result of the water level is output to the driving method determination device 13.
Reference numeral 123 denotes a merging pipe water level judging device for judging whether or not sewage has flowed into the augmented pipe after flowing over the merging pipe. When the water level reaches the pipe diameter, it is determined that there is an inflow to the augmented pipe. The result is output to the driving method determination device 13.
An operation method determination device 13 determines which pump operation is to be performed based on the result obtained by the drainage determination device 12. It is determined whether or not the prediction results of the inflow amount prediction device 121, the drainage water level prediction device 122, and the water level of the junction water level determination device 123 have exceeded the determination reference value. If any of the inflow amount, the predicted value of the water level, and the water level of the merged pipe are lower than the upper limit judgment reference value, it is regarded as fine weather and the result is output to the 154 water supply control device. If any of the inflow amount, the predicted value of the water level, and the water level of the confluence pipe exceeds the determination reference value, it is regarded as a heavy rainfall and is output to the drainage control device 153. If none of the inflow, predicted water level, and water level of the confluence pipe exceed the upper limit, the water level of the confluence pipe is higher than the lower limit. Output to pump well water level determination device.
Reference numeral 14 denotes a drainage pump station pump well water level determination device, which determines the pump well water level of the drainage pump station in order to confirm the storage amount in the pipe. If the pump well water level exceeds the criterion value, no more water can be stored in the pipe, and the result is output to the combined drainage control device 152. If the pump well water level at the drainage pump station does not exceed the determination reference value, the in-pipe storage is possible and the result is output to the in-pipe storage control device 151.
Reference numeral 15 denotes a pump control device, which includes a pipe storage control device 151, a combined drainage control device 152, a drainage control device 153, and a water supply control device 154.
Reference numeral 151 denotes an in-pipe storage control device, which performs in-pipe storage at a drainage pump station during mid-rainfall. The treatment plant water supply pump operates the sewage flowing into the combined pumping station such that the pump well water level is constant, and sends the sewage to the treatment plant. The junction pump station drainage pump controls the pump so that the pump well water level does not rise, and discharges sewage to the river. In addition, gate 6 will be opened to store in the pipes on the supplementary trunk line.
Reference numeral 152 denotes a combined drainage control device, which performs an operation without storing in a pipe during middle rainfall because the stored quantity in the pipe is full. The treatment plant water supply pump operates the sewage flowing into the combined pumping station such that the pump well water level is constant, and sends the sewage to the treatment plant. The junction pump station drainage pump controls the pump so that the pump well water level does not rise, and discharges sewage to the river. In addition, gate 6 will be closed because the in-pipe storage is not performed on the supplementary trunk line.
Reference numeral 153 denotes a drainage control device. During a heavy rainfall, the treatment plant water supply pump supplies an amount of sewage that does not load the treatment plant with the sewage flowing into the combined pumping station. The drainage pump at the combined pumping station controls the pump so that the water level in the pump well does not rise, and discharges sewage to the river. At the drainage pumping station, if sewage flows into the supplementary pipe, the inflow of sewage is discharged to the river without storing in the pipe to prevent flooding first.
Reference numeral 154 denotes a water supply control device. The treatment plant water supply pump operates the sewage flowing into the merged pumping station such that the pump well water level is constant, and sends the sewage to the treatment plant. After rainfall, the pumping station water supply pump first sends water to the combined pumping station to send the sewage stored in the supplementary pipe to the treatment plant.
Reference numeral 16 denotes a pump operation command device, which includes a pump station water pump command device 161, a treatment plant water pump command device 162, a merge pump station drain pump command device 163, and a drain pump station drain pump command device 164.
Reference numeral 161 denotes a pump station water supply pump command device, which sends a signal to the pump based on the result calculated by the 15 pump control devices in fine weather.
Reference numeral 162 denotes a treatment plant water supply pump command device, which sends a signal to the pump based on the result calculated by the 15 pump control devices in fine weather and small rainfall.
A junction pump station drain pump command device 163 sends a signal to the pump based on the result calculated by the 15 pump control devices at the time of middle rainfall.
Reference numeral 164 denotes a drainage pump station drainage pump command device, which sends a signal to the pump based on the result calculated by the 15 pump control devices during heavy rainfall.
Next, the operation will be described.
In rainy weather, sewage flows into the merge pipe and flows into the merge pump station. When the drainage determination device 12 determines that the inflow amount is large, it is impossible to send water to the treatment plant, and in that case, the operation method determination device 13 determines that the in-pipe storage is possible. Then, the drainage pump station pump well water level determination device 14 determines the amount of sewage stored in the pipe, and under the control of the pump control device 15, opens the gate 6 until the stored amount reaches the reference value. When the value is reached, the gate 6 is closed.
When the drainage determination device 12 determines that the inflow amount is further larger, the sewage overflows from the diversion weir of the junction pipe. In this case, it is determined by the operation method determination device 13 that storage in the pipe is impossible, and the sewage flowing into the drainage pump station is immediately drained to the river by a command from the pump control device 15.
[0016]
【The invention's effect】
As described above, according to the operation support device of the present invention, installation of a gate at a junction pumping station, installation of a pumping station water supply pump at a drainage pumping station, inflow prediction, water level prediction, pump control, sewer water level Monitoring can reduce sewage discharge into public waters by enabling the storage of sewage in the augmented pipes, and the ability to reduce the likelihood of water quality deterioration in public waters, enabling in-pipe storage There is.
[Brief description of the drawings]
FIG. 1 is a schematic view showing a driving support device according to the present invention.
FIG. 2 is a schematic diagram showing a conventional driving support device.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Rain gauge 2 Consolidated pipe water level gauge 3 Intensified pipe water level meter 4 Pump well water level gauge 5 Flow meter 6 Gate 7 Treatment plant water supply pump 8 Combined pump station drainage pump 9 Drainage pump station drainage pump 10 Pump station water supply pump 11 Measurement value accumulating device 12 drainage judging device 121 inflow amount estimating device 122 sewer water level estimating device 123 merged pipe water level judging device 13 operating method judging device 14 drainage pump station pump well water level judging device 15 pump control device 151 in-pipe storage control device 152 combined drainage control device 153 Drainage control device 154 Water supply control device 155 Transmission / drainage control device 16 Pump operation command device 161 Pump station water supply pump command device 162 Treatment plant water supply pump command device 163 Combination pump station drain pump command device 164 Drain pump drain pump command device

Claims

Combination pumping station to send sewage and rainwater to treatment plant and drain to river, drainage pumping station to discharge rainwater to river, water level gauge (2,3,4) for measuring water level of sewers and pump wells, and pump Flowmeter for measuring the amount of water supplied to the plant, a water pump for the treatment plant (7) for supplying water to the treatment plant, a drainage pump (8) for the discharge from the junction pumping station to the river, and a drainage from the drainage pumping station to the river. Drainage pump station Drainage pump (9), measurement value accumulator (11) for accumulating data collected from measuring instruments, pump controller (15) for controlling and calculating the pump, and pump operation for sending commands to each pump In a driving assistance device including a command device (16),
A gate (6) for feeding water from the junction pump station to the supplementary pipe, a pump station water pump (10) for sending sewage stored from the drainage pump station to the junction pump station after rainfall, and whether or not to perform in-pipe storage. A drainage judging device (12) for predicting and judging the result serving as a reference of the above, an operation method judging device (13) for judging which pump operation is to be performed from the result of the drainage judging device, Drainage pump station pump well water level determination device (14) for judging the amount of storage in the pipe that serves as an indicator of opening and closing, and control of each of the treatment plant water supply pump, the combined pumping plant drainage pump, the drainage pumping plant drainage pump, and the pumping plant water pump, And a pump control device (15) for controlling the opening and closing of a gate for supplying water from the merging pump station to the supplementary pipe, and a pump based on a result calculated by the pump control device (15). Driving support device being characterized in that a pump operation command device (16) providing a decree.

The drainage determination device (12) includes an inflow amount prediction device (121) that predicts an inflow amount flowing into a merging pump station, a culvert water level prediction device (122) that predicts a culvert water level of a merging pipe, and The driving support device according to claim 1, further comprising at least one of a merging pipe water level determination device (123) that determines whether the inflow of sewage has overflowed to the supplementary pipe.

The pump control device (15) includes an in-pipe storage control device (151) that performs control for performing in-pipe storage during middle rainfall, and a combined drainage control device that performs control to perform drainage to a river without performing in-pipe storage during middle rainfall. The water supply control device (153) for controlling drainage to a river during heavy rainfall, and a water supply control device (154) for supplying water to a treatment plant in fine weather. Or the driving assistance device according to 2.

The pump operation command device (16) includes a pump station water supply pump command device (161) that outputs a command for sending the sewage stored in the supplementary pipe to the combined pump station after rainfall, and a sewage flowing into the combined pump station. Water supply pump command device (162) for outputting a command to a pump for feeding water to a treatment plant, and a merge pump station drain pump command device for outputting a command to a pump for draining sewage flowing into a merge pump station to a river (163) and a drain pump station drain pump command device (164) that outputs a command of a pump for draining sewage flowing into a drain pump station to a river. Driving assistance device.