JP6568776B2 - Water operation planning device - Google Patents

Water operation planning device Download PDF

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JP6568776B2
JP6568776B2 JP2015223582A JP2015223582A JP6568776B2 JP 6568776 B2 JP6568776 B2 JP 6568776B2 JP 2015223582 A JP2015223582 A JP 2015223582A JP 2015223582 A JP2015223582 A JP 2015223582A JP 6568776 B2 JP6568776 B2 JP 6568776B2
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裕史 鯉渕
裕史 鯉渕
健一郎 原
健一郎 原
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Hitachi Ltd
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Description

本発明は、上水道の水運用計画を立案する水運用計画立案装置に係り、特に、電力削減要請に対応した水運用計画立案装置に関する。   The present invention relates to a water operation plan drafting apparatus for drafting a water supply plan for water supply, and more particularly, to a water management plan drafting apparatus corresponding to a power reduction request.

上水道プラントの監視制御システムにおいて、区域内に散在する浄水場、配水場、ポンプ場等の水道施設の運用計画を立案する装置が知られている。例えば、特許文献1では、需要予測部が、過去の水需要量データや当日の天気、気温、曜日をもとに当日の水需要量を予測する。また、計画立案部が当日の水需要量の予測をもとに、水源からの取水計画や配水池への送水計画を立案する。さらに、再立案判定部が計画値と実績値の間の乖離を判定し、所定の乖離が発生した場合には再計画を行う。   2. Description of the Related Art In a monitoring and control system for a water supply plant, there is known an apparatus for planning an operation plan for water supply facilities such as water purification plants, water distribution plants, and pump stations scattered in the area. For example, in Patent Document 1, the demand prediction unit predicts the water demand on the current day based on the past water demand data, the weather on the day, the temperature, and the day of the week. In addition, the planning department formulates a water intake plan from the water source and a water supply plan to the distribution reservoir based on the prediction of the water demand on the day. Further, the re-planning determination unit determines a divergence between the plan value and the actual value, and performs re-planning when a predetermined divergence occurs.

電気事業者が抱える電力需給の逼迫の問題に際して、電気事業者またはそれを代行するアグリゲータが電力の需要家に電力削減要請を行うデマンドレスポンスが検討されている。要請を受けた需要家はエネルギーマネジメントシステム等を活用し、抑制時間帯の電気機器の電力を抑制する。   In response to the problem of tight supply and demand of electric power companies, demand response is being studied in which electric power companies or aggregators acting on their behalf request electric power customers to reduce electric power. The customer who receives the request uses an energy management system or the like to suppress the electric power of the electric device during the suppression time period.

水道ではポンプの電力使用量が水道設備全体の電力使用量の8割を占めると言われており、抑制時間帯のポンプの運転調整を行うことで、電力削減要請への対応が可能である。   In waterworks, it is said that the power consumption of the pump accounts for 80% of the power consumption of the entire water supply system, and it is possible to respond to a power reduction request by adjusting the operation of the pump during the suppression time zone.

特開2007−102514号公報JP 2007-102514 A

特許文献1では所定の乖離が発生した場合に水運用計画システムは再立案を行っていた。しかし、電力削減要請に際しては、乖離の発生に関係なく再立案が必要である。また、電力削減要請で指定を受けた時間帯は要請内容を可能な限り守る計画が必要となる。同時に、ポンプの運転調整の結果、断水等が発生しないよう、需要家への給水が保証された計画である必要がある。また、電力削減要請の有無に関わらず、施設毎または複数施設をまとめたエリア毎の契約電力の抑制が求められている。
そこで、本発明の目的は、水道の需要家へ影響を与えることなく、ピーク電力を抑制した水道設備の運用計画を立案する水運用計画立案装置を提供することにある。
In Patent Literature 1, when a predetermined deviation occurs, the water operation planning system re-plans. However, when requesting power reduction, re-planning is necessary regardless of the divergence. In addition, it is necessary to plan to protect the requested content as much as possible during the time period specified in the power reduction request. At the same time, it is necessary to ensure that the water supply to the customer is guaranteed so that water is not cut off as a result of adjusting the operation of the pump. Regardless of whether or not there is a power reduction request, there is a need to reduce contract power for each facility or for each area where a plurality of facilities are combined.
SUMMARY OF THE INVENTION An object of the present invention is to provide a water operation plan drafting apparatus that drafts an operation plan for a water supply facility that suppresses peak power without affecting water supply consumers.

本発明の水運用計画立案装置は、取送水管網の各所にポンプが設置され、需要家への給水の過程で浄水池または配水池に水道水を貯留する上水道システムの水運用計画を立案する装置において、需要家の需要量を予測する需要予測部を有し、需要予測結果に基づいて各時刻の管路の流量計画、ポンプ運転計画、配水池の水位計画を立案する計画立案部を有し、電力削減要請を受けた時間帯には要請内容を守るように運用計画を立案することを特徴とする。   The water operation plan planning apparatus of the present invention sets up a water operation plan for a water supply system in which pumps are installed at various locations of a water supply pipe network, and tap water is stored in a water purification pond or a distribution pond in the process of supplying water to consumers. The equipment has a demand forecasting unit that forecasts the demand volume of consumers, and a plan planning unit that formulates pipeline flow plans, pump operation plans, and reservoir water level plans at each time based on the demand forecast results. In the time period when the power reduction request is received, an operation plan is created so as to protect the requested content.

本発明によれば、水道の需要家へ影響を与えることなく、ピーク電力を抑制した水道設備の運用計画を立案することができる。   ADVANTAGE OF THE INVENTION According to this invention, the operation plan of the water supply facility which suppressed peak electric power can be drawn up, without affecting the consumer of water supply.

実施形態のデマンドレスポンスシステムの概略構成を表す図であるIt is a figure showing the schematic structure of the demand response system of an embodiment 実施形態の上水道システムの概略構成を表す図であるIt is a figure showing schematic structure of the waterworks system of an embodiment 実施形態の水運用計画立案装置の構成を表す図であるIt is a figure showing the structure of the water operation plan planning apparatus of embodiment. 実施形態の再立案判定部の処理フローを表す図である。It is a figure showing the processing flow of the re-planning determination part of embodiment. 実施形態の計画立案部の処理フローを表す図である。It is a figure showing the processing flow of the planning part of embodiment. 実施形態のリスク評価部の処理フローを表す図である。It is a figure showing the processing flow of the risk evaluation part of embodiment. 実施形態の安定供給継続時間と供給可能時間を説明する図である。It is a figure explaining the stable supply continuation time and supply possible time of embodiment. 実施形態の水運用計画立案装置の出力装置に表示する画面を例示する図である。It is a figure which illustrates the screen displayed on the output device of the water operation plan planning device of an embodiment.

本発明は、電力削減要請を水運用計画システムにおける再立案の条件とし、抑制時間の電力削減と給水の継続を両立した運用計画を作成する。また、電力削減要請がない時間帯は施設毎またはエリア毎のデマンド電力が契約電力や過去1年以内の最大電力、オペレータが設定した目標電力以下になるよう計画する。さらには、配水池への水の流入が停止すると仮定し、あらかじめ設定された運用下限水位に到達するまでの時間(安定供給継続時間)と施設下限水位に到達するまでの時間(供給可能時間)を需要予測結果と配水池の水位計画値または最新の実績値から算出するリスク評価処理と、システムの使用者に提示するグラフィカルユーザインタフェース(GUI)を備える。上記構成によれば、電力削減要請を受けた場合にも水道の需要家に断水等の影響を与えることなく、水道事業者はデマンドレスポンスを行うことができる。また、安定供給継続時間と供給可能時間を算出し、画面表示することで、システムの使用者であるオペレータは電力削減要請時に給水の継続性に関するリスクを視認できる。また、日々の運用の中でポンプ故障等の突発的な事象により配水池の水位が低下した場合にも、供給停止に至るまでの時間と対策に要する時間を比較、検討することができる。
以下、本発明に係る水運用計画立案装置の一実施形態を、図面を参照しながら説明する。ただし、本発明は以下に示す例に限定されない。
The present invention uses an electric power reduction request as a condition for re-planning in the water operation planning system, and creates an operation plan that achieves both reduction of electric power during the suppression time and continuation of water supply. In addition, during a period when there is no request for power reduction, the demand power for each facility or area is planned to be less than the contract power, the maximum power within the past year, or the target power set by the operator. Furthermore, assuming that the inflow of water into the distribution reservoir stops, the time to reach the preset operation lower limit water level (stable supply duration) and the time to reach the facility lower limit water level (supply available time) Is calculated from the demand prediction result and the water level plan value of the distribution reservoir or the latest actual value, and a graphical user interface (GUI) presented to the system user. According to the above configuration, even when a power reduction request is received, the water utility can perform a demand response without affecting the water customer, such as water outage. In addition, by calculating the stable supply continuation time and the supply available time and displaying it on the screen, the operator who is the user of the system can visually recognize the risk related to the continuity of water supply when requesting power reduction. In addition, even when the water level in the reservoir is lowered due to a sudden event such as a pump failure during daily operation, the time required to stop supply can be compared with the time required for countermeasures.
Hereinafter, an embodiment of a water operation planning apparatus according to the present invention will be described with reference to the drawings. However, the present invention is not limited to the examples shown below.

図1にデマンドレスポンスにおける各システムの概略構成を示す。電力事業者またはアグリゲータ10が有する電力削減管理装置90はネットワーク80を介して、水運用計画センター20の水運用計画立案装置と電力削減要請または要請内容の変更の送信、電力削減実施状況の受信を行っている。デマンドレスポンスに関連する情報を送受信する通信規格として例えばOpenADR2.0bが存在する。また、水運用計画センター20はネットワーク70a、70b、70c、70dを介して取水場30、浄水場40、ポンプ場50、配水場60とそれらを管路で繋ぐ取送水管網に対して、計画値の送信、実績値の受信を行っている。なお、取水場30、浄水場40、ポンプ場50、配水場60を総称して施設という。ここで、計画値とは実行日を含む指定日数の期間にわたる管路の流量目標値、配水池の水位目標値、ポンプの運転台数目標値、流量制御弁の開閉目標値等を指し、15分毎や30分毎の目標値が計画される。実績値とは各管路の流量を示すデータと水位計から得た配水池の水位を示すデータ、ポンプの運転台数を示すデータ、施設の30分デマンド電力、電力使用量を示すデータ等を指す。   FIG. 1 shows a schematic configuration of each system in demand response. The power reduction management device 90 possessed by the power company or aggregator 10 sends a water operation planning device of the water operation planning center 20 with the water operation plan planning device 20 through the network 80, transmits a power reduction request or request content change, and receives the power reduction implementation status. Is going. For example, OpenADR2.0b exists as a communication standard for transmitting and receiving information related to demand response. In addition, the water operation planning center 20 plans for the intake water network 30, the water purification plant 40, the pumping station 50, the water distribution plant 60 and the water supply pipe network connecting them through the networks 70a, 70b, 70c and 70d. Sending value and receiving actual value. In addition, the water intake 30, the water purification plant 40, the pumping station 50, and the water distribution plant 60 are collectively referred to as a facility. Here, the planned value refers to the flow rate target value of the pipeline over the specified number of days including the execution date, the water level target value of the reservoir, the target number of operating pumps, the target value for opening and closing the flow control valve, etc. Target values are planned every 30 minutes. The actual value refers to data indicating the flow rate of each pipeline, data indicating the water level of the reservoir obtained from the water level gauge, data indicating the number of operating pumps, 30-minute demand power of the facility, data indicating power consumption, etc. .

図2に、本発明の一実施形態に係る水道供給網の概略構成を示す。水道では取送水管網の各所にポンプが設置されている。ポンプ31は浄水場40へ、ポンプ42は配水場60a内の配水池61aへ、ポンプ51は配水場60b内の配水池61aへ水を送っている。配水池61a、61bに貯められた水道水は需要家62a、62bへ給水している。浄水場は水源から取水された原水を需要家へ給水可能な水質にするための薬品注入設備、沈殿設備、ろ過設備等の浄水設備(不図示)を有する。また、需要家へ給水可能な水質となった水道水を貯留する浄水池41がある。    In FIG. 2, schematic structure of the water supply network which concerns on one Embodiment of this invention is shown. In the water supply, pumps are installed in various places in the water supply pipe network. The pump 31 sends water to the water purification plant 40, the pump 42 sends water to the water reservoir 61a in the water distribution plant 60a, and the pump 51 sends water to the water reservoir 61a in the water distribution plant 60b. The tap water stored in the distribution reservoirs 61a and 61b is supplied to the consumers 62a and 62b. The water purification plant has water purification equipment (not shown) such as chemical injection equipment, sedimentation equipment, and filtration equipment for making the raw water taken from the water source into a water quality that can be supplied to consumers. In addition, there is a water purification basin 41 for storing tap water having water quality that can be supplied to consumers.

水道におけるデマンドレスポンス実施手法を述べる。浄水池や配水池は水需要の変動や災害の発生等に備えて、多量の水道水を貯蔵することが可能である。例えば水道設計指針において、配水池容量は計画一日最大給水量の12時間を標準と定められている。電力削減要請時には浄水池や配水池の貯水量を活用することで、ポンプの運転を調整できる。具体的には、ポンプの運転を制限し浄水場、配水場への流入が減少した場合でも、浄水池、配水池の貯水量を活用すれば、一定時間は需要家へ給水を継続することが可能となる。ただし、ポンプを停止することは水道事業者にとってはリスクとなるため、ポンプを停止した場合に何時間給水を継続できるかが重要な情報となる。   The demand response implementation method in water supply is described. Water purification ponds and distribution ponds can store a large amount of tap water in preparation for fluctuations in water demand and disasters. For example, in the water supply design guideline, the distribution tank capacity is determined to be 12 hours, which is the maximum daily water supply amount. When requesting power reduction, the pump operation can be adjusted by using the amount of water stored in the clean water reservoir and distribution reservoir. Specifically, even if the pump operation is restricted and the inflow to the water purification plant or distribution plant is reduced, the water supply to the customer can be continued for a certain period of time by using the water storage capacity of the water purification and distribution reservoirs. It becomes possible. However, since stopping the pump is a risk for the water utility, it is important information how many hours of water supply can be continued when the pump is stopped.

図3に、本発明の一実施形態に係る水運用計画立案装置の構成を示す。なお、図面には本発明に関連する要部のみを示す。   In FIG. 3, the structure of the water operation plan planning apparatus which concerns on one Embodiment of this invention is shown. In addition, only the principal part relevant to this invention is shown in drawing.

図3に示すように、水運用計画立案装置100は、水運用計画の立案処理を行う情報処理装置130と、オペレータからの各種データの入力や各種指示を受付けるための入力装置110と、情報処理装置130からデータをオペレータに提示するための出力装置120とを有する。   As shown in FIG. 3, the water operation plan planning device 100 includes an information processing device 130 that performs a planning process for a water operation plan, an input device 110 that receives input of various data and various instructions from an operator, and information processing. And an output device 120 for presenting data from the device 130 to the operator.

情報処理装置130は、各種演算処理を行うものとしてリスク評価部200、需要予測部210、計画立案部220、再立案判定部230、グラフィカルユーザインタフェース部240、通信処理部250を有する。また、演算結果やデータを記憶するために予測需要量記憶部300、施設条件記憶部310、実績値記憶部320、計画値記憶部330、電力削減条件記憶部340、リスク評価記憶部350を有する。   The information processing apparatus 130 includes a risk evaluation unit 200, a demand prediction unit 210, a planning unit 220, a re-planning determination unit 230, a graphical user interface unit 240, and a communication processing unit 250 that perform various arithmetic processes. Moreover, in order to memorize | store a calculation result and data, it has the predicted demand amount memory | storage part 300, the facility condition memory | storage part 310, the actual value memory | storage part 320, the plan value memory | storage part 330, the electric power reduction condition memory | storage part 340, and the risk evaluation memory | storage part 350. .

各種処理部について説明する。   Various processing units will be described.

グラフィカルユーザインタフェース部240は、各記憶部に格納された情報を読み込み、出力装置120の画面に表示をおこなう。具体的には、電力削減要請の受信をオペレータに通知する画面、監視下にある水道施設の運転状況と電力の使用状況を表示する画面、立案した計画値、実績値とリスク評価結果を表示する画面等である。また、グラフィカルユーザインタフェース部240は、入力装置110を介して、オペレータが入力する各種のデータおよび指示を受け付ける。具体的には施設条件や目標電力の入力、リスク評価の判定閾値の入力等である。   The graphical user interface unit 240 reads information stored in each storage unit and displays it on the screen of the output device 120. Specifically, a screen for notifying the operator of receipt of a power reduction request, a screen for displaying the operating status and power usage status of the monitored water facility, a planned plan value, an actual value, and a risk evaluation result are displayed. Screen. In addition, the graphical user interface unit 240 receives various data and instructions input by the operator via the input device 110. Specifically, it is input of facility conditions and target power, input of judgment threshold for risk evaluation, and the like.

需要予測部210はオペレータからグラフィカルユーザインタフェース部240を介して入力された需要予測条件(例えば立案日、立案期間、前日、当日の天候、最高気温等)に基づいて、需要予測を行い、その予測結果をグラフィカルユーザインタフェース部240に出力するともに予測需要量記憶部300へ格納する。   The demand forecasting unit 210 performs demand forecasting based on demand forecasting conditions (for example, planning date, planning period, the day before, weather on the day, maximum temperature, etc.) input from the operator via the graphical user interface unit 240, and the prediction The result is output to the graphical user interface unit 240 and stored in the predicted demand storage unit 300.

通信処理部250は、ネットワーク80を介して、電力削減管理装置90から電力削減要請の受信し、電力削減条件記憶部340に書き込む。電力削減条件記憶部340は、通信処理部320が受信した電力削減条件を記憶する。具体的には、デマンドレスポンスを開始する時刻、デマンドレスポンスを終了する時刻またはデマンドレスポンスを継続する時間、要請された削減電力、デマンドレスポンス実施結果を算出するためのベースライン電力等の情報を指す。また、実績値記憶部320を読み込み、ネットワーク80を介して、電力削減管理装置90へデマンドレスポンス実施状況の送信を行う。それと平行して、通信処理部250はネットワーク70aから70dを介して、各施設から受信した実績値を実績値記憶部320に格納するとともに計画値記憶部330を読み込み各施設へ計画値を送信する。  The communication processing unit 250 receives a power reduction request from the power reduction management device 90 via the network 80 and writes it in the power reduction condition storage unit 340. The power reduction condition storage unit 340 stores the power reduction condition received by the communication processing unit 320. Specifically, it refers to information such as the time to start a demand response, the time to end the demand response or the time to continue the demand response, the requested reduced power, the baseline power for calculating the demand response execution result, and the like. In addition, the actual value storage unit 320 is read, and the demand response execution status is transmitted to the power reduction management device 90 via the network 80. In parallel with this, the communication processing unit 250 stores the actual value received from each facility in the actual value storage unit 320 and reads the planned value storage unit 330 and transmits the planned value to each facility via the networks 70a to 70d. .

図4に再立案判定に係るフローを示す。再立案判定部230は、電力削減条件記憶部340を読み込み、電力削減要請の有無を判定し、要請有の場合に計画立案部220を呼び出す。また、リスク評価記憶部350を読み込み、リスク評価部200が算出したリスク評価結果を判定し、リスク有の場合に計画立案部220を呼び出す。なお、リスク有とは、後述の安定供給継続時間、供給可能時間がオペレータが入力した閾値未満になることをいう。   FIG. 4 shows a flow relating to re-planning determination. The re-planning determination unit 230 reads the power reduction condition storage unit 340, determines whether there is a power reduction request, and calls the planning unit 220 when there is a request. In addition, the risk evaluation storage unit 350 is read, the risk evaluation result calculated by the risk evaluation unit 200 is determined, and when there is a risk, the planning unit 220 is called. “Risk present” means that the stable supply continuation time and supply available time described below are less than the threshold value input by the operator.

計画立案部220は、予測需要量と施設条件、電力削減条件に基づいた演算を行い、計画値を計画値記憶部330に書き込む。なお、電力削減要請がない場合であっても、計画立案部220は運用を計画することができる。  The planning unit 220 performs a calculation based on the predicted demand, the facility condition, and the power reduction condition, and writes the planned value in the planned value storage unit 330. Even when there is no power reduction request, the planning unit 220 can plan the operation.

計画立案部220は電力会社や電力アグリゲータからの電力削減要請条件を満たす運用計画を立案する。電力削減要請がない通常時は施設毎またはエリア毎でのデマンド電力が契約電力や過去1年以内の最大電力、オペレータが設定した目標電力以下になるよう計画する。電力削減条件を満たせない場合は、各制約条件を満たした上で最大の電力削減が可能な運用計画を立案する。また、ここで、施設とは一つの電力契約がされた設備群をいう。また、エリア毎とは複数の施設の集まりをいう。   The planning unit 220 creates an operation plan that satisfies the power reduction requirement from the power company or power aggregator. During normal times when there is no request for power reduction, the demand power for each facility or area is planned to be less than the contract power, the maximum power within the past year, or the target power set by the operator. If the power reduction condition cannot be satisfied, an operation plan that can achieve the maximum power reduction is prepared after satisfying each constraint condition. Here, the facility means a group of equipment for which one power contract has been made. Each area is a collection of a plurality of facilities.

図5に計画立案に係るフローを示す。計画立案の前提条件として予測需要量記憶部300、施設条件記憶部310、電力削減条件記憶部340に演算結果や制約条件が設定済みである必要がある。はじめに予測需要量記憶部300へ格納された予測需要量時系列、施設条件記憶部310から各配水池の容量と運用上下限水位情報、ポンプの送水量と消費電力、契約電力等、電力削減条件記憶部340に格納されている電力削減要請の有無、目標電力等を読み込む。また実績値記憶部320から各配水池の最新水位と過去1年以内の最大電力を読み込む。これらの情報を用いて、計画実行日を含む指定日数の期間にわたる運用が所定の電力以下となるよう計画する。計画手法として、線形計画法や混合整数計画法がある。計画立案では、設定した条件の中で最も小さい電力以下にすることを第一の目標とする。目標が達成不可の場合には、次に小さい電力以下になるよう計画立案を行う。以降、目標が達成されるまで電力の条件を緩和していき、そのいずれもが達成できない場合には達成可能な範囲で電力が最小となるよう計画を立案する。立案結果は計画値記憶部330へ格納する。   Fig. 5 shows the flow for planning. As a precondition for planning, calculation results and constraint conditions must be set in the predicted demand storage unit 300, the facility condition storage unit 310, and the power reduction condition storage unit 340. First, the predicted demand time series stored in the predicted demand storage unit 300, the capacity and operation upper and lower limit water level information of each reservoir from the facility condition storage unit 310, the pump water supply and power consumption, contract power, etc. The presence / absence of a power reduction request and target power stored in the storage unit 340 are read. Further, the latest water level of each reservoir and the maximum power within the past year are read from the actual value storage unit 320. Using these pieces of information, an operation over a specified number of days including the planned execution date is planned to be equal to or less than a predetermined power. As a programming method, there are a linear programming method and a mixed integer programming method. In planning, the first goal is to make the power less than or equal to the smallest of the set conditions. If the target cannot be achieved, plan to make it less than the next lowest power. Thereafter, the power condition is relaxed until the target is achieved, and if neither of them can be achieved, a plan is made so that the power is minimized within the achievable range. The planning result is stored in the plan value storage unit 330.

リスク評価部200は、計画値または実績値に対するリスクを評価し、リスク評価記憶部350に格納するとともにグラフィカルユーザインタフェース部240に出力する。
図6にリスク評価に係るフローを示す。リスク評価の前提条件として予測需要量記憶部300、施設条件記憶部310、電力削減条件記憶部340に演算結果や制約条件が設定済みである必要がある。はじめに、予測需要量記憶部300から予測需要量時系列を、計画値記憶部330から配水池の水位計画を施設条件記憶部320から配水池の断面積と運用下限水位と施設下限水位を取得し、安定供給継続時間と供給可能時間を算出する。
The risk evaluation unit 200 evaluates the risk for the planned value or the actual value, stores the risk in the risk evaluation storage unit 350, and outputs it to the graphical user interface unit 240.
FIG. 6 shows a flow relating to risk assessment. As a precondition for risk evaluation, calculation results and constraint conditions must be set in the predicted demand storage unit 300, the facility condition storage unit 310, and the power reduction condition storage unit 340. First, the predicted demand time series is acquired from the predicted demand storage unit 300, the water level plan of the reservoir is acquired from the plan value storage unit 330, and the cross-sectional area of the distribution reservoir, the operation lower limit water level, and the facility lower limit water level are acquired from the facility condition storage unit 320. The stable supply continuation time and the supply available time are calculated.

図7に安定供給継続時間と供給可能時間の概念図を示す。評価開始時刻の水位を基準として、ポンプの運転が停止したと仮定した場合に配水場の水位が低下し運用下限水位に到達するまでの猶予時間を算出したものを安定供給継続時間とする。
安定供給継続時間 = 運用下限到達時刻−評価開始時刻
また、施設下限水位に到達するまでの猶予時間を供給可能時間とする。なお、水道の運用上は施設下限水位に到達すると給水の継続が不可能となり断水となる。
供給可能時間 = 施設下限到達時刻−評価開始時刻
評価開始時刻を変更し、計画期間内の全時刻分の安定供給継続時間と供給可能時間を算出したものを、各時刻のリスク評価結果としてリスク評価記憶部に格納する。また、最新時刻の水位実績値に対して安定供給継続時間と供給可能時間を算出することで現時点でのリスク評価を実施する。時系列でシステムの使用者に表示することができ、リスクの可視化に繋がる。
図8にリスク評価結果の画面例を示す。リスク評価結果画面では各配水場の実績水位トレンド500、予測水位トレンド510、各時刻の安定供給継続時間520、各時刻の供給可能時間530をグラフ表示する。また、現在時刻の水位540、現在時刻の安定供給継続時間550、現在時刻の供給可能時間560、運用下限水位570、施設下限水位580を表示する。
FIG. 7 shows a conceptual diagram of stable supply continuation time and supplyable time. Based on the water level at the evaluation start time, when the pump operation is assumed to be stopped, the stable supply continuation time is calculated by calculating the grace time until the water level in the water distribution plant decreases and reaches the operation lower limit water level.
Stable supply continuation time = operation lower limit arrival time-evaluation start time Also, the grace time until the facility lower limit water level is reached is the supplyable time. In terms of water supply operation, when the facility reaches the lower limit water level, water supply cannot be continued and water will be cut off.
Supplyable time = Facility lower limit arrival time-Evaluation start time The evaluation start time is changed, and the stable supply continuation time and supply available time for all times within the planned period are calculated, and the risk evaluation is performed as the risk evaluation result at each time. Store in the storage. In addition, the current risk assessment is performed by calculating the stable supply continuation time and supply possible time for the latest water level actual value. It can be displayed to the user of the system in chronological order, leading to risk visualization.
FIG. 8 shows a screen example of the risk evaluation result. On the risk evaluation result screen, the actual water level trend 500, the predicted water level trend 510, the stable supply continuation time 520 at each time, and the supply possible time 530 at each time are displayed in a graph. In addition, the current water level 540, the current time stable supply continuation time 550, the current time supply available time 560, the operation lower limit water level 570, and the facility lower limit water level 580 are displayed.

10…電気事業者またはアグリゲータ、20…水運用計画センター、30…取水場、40…浄水場、50…ポンプ場、60…配水場、70、80…ネットワーク、90…電力削減管理装置、100…水運用計画立案装置、110…入力装置、120…出力装置、200…通信処理部、210…需要予測部、220…計画立案部、230…再立案判定部、240…グラフィカルユーザインタフェース部、300…予測値記憶部、310…施設条件記憶部、320…実績値記憶部、330…計画値記憶部、340…電力削減条件記憶部、350…リスク評価記憶部。 DESCRIPTION OF SYMBOLS 10 ... Electric power company or aggregator, 20 ... Water operation planning center, 30 ... Water intake, 40 ... Water purification plant, 50 ... Pumping station, 60 ... Water distribution plant, 70, 80 ... Network, 90 ... Electricity reduction management apparatus, 100 ... Water operation planning device 110 ... Input device 120 ... Output device 200 ... Communication processing unit 210 ... Demand prediction unit 220 ... Planning planning unit 230 ... Re-planning decision unit 240 ... Graphical user interface unit 300 ... Predicted value storage unit, 310 ... Facility condition storage unit, 320 ... Actual value storage unit, 330 ... Planned value storage unit, 340 ... Power reduction condition storage unit, 350 ... Risk assessment storage unit.

Claims (8)

取送水管網の各所にポンプが設置され、需要家への給水の過程で浄水池または配水池に水道水を貯留する上水道システムの水運用計画を立案する装置において、
需要家の需要量を予測する需要予測部を有し、需要予測結果に基づいて各時刻の管路の流量計画、ポンプ運転計画、配水池の水位計画を含む運用計画を立案する計画立案部と、電力削減要請を受信する通信処理部と、給水の継続のリスクを評価するリスク評価部と、前記計画立案部による再立案の有無を判定する再立案判定部と、を有し、
前記計画立案部は、要請された電力削減条件に基づいて、電力削減要請を受けた時間帯の前記運用計画を立案し、
前記再立案判定部は、少なくとも、前記通信処理部が前記電力削減要請を受信する、または、前記リスク評価部がリスク有と判断すると、前記計画立案部に前記運用計画を再立案させることを特徴とする水運用計画立案装置。
Pumps are installed at various locations in the intake water pipe network, and in the process of water supply to customers, a water operation plan for a water supply system that stores tap water in a water purification pond or distribution pond,
A planning unit that has a demand forecasting unit that forecasts the demand amount of the customer, and that formulates an operation plan including a pipeline flow rate plan, a pump operation plan, and a reservoir level plan at each time based on the demand forecast result ; A communication processing unit that receives a power reduction request, a risk evaluation unit that evaluates the risk of continuation of water supply, and a re-planning determination unit that determines whether or not re-planning is performed by the planning unit ,
The planning unit formulates the operation plan for the time period in which the power reduction request is received based on the requested power reduction condition ,
The re-planning determination unit, at least when the communication processing unit receives the power reduction request or when the risk evaluation unit determines that there is a risk, causes the planning unit to re-plan the operation plan. Water operation planning device.
請求項1において、前記通信処理部は電力削減状況を送信することを特徴とする水運用計画立案装置。 According to claim 1, wherein the communication processing unit water production planning apparatus, wherein the benzalkonium to send power reduction conditions. 請求項1または2において、電力削減要請を受けた時間帯以外は施設毎またはエリア毎でのデマンド電力が契約電力以下になるように運用計画を立案することを特徴とする水運用計画立案装置。   3. The water operation plan planning apparatus according to claim 1, wherein an operation plan is prepared so that demand power for each facility or each area is equal to or less than contract power except during a time period in which a power reduction request is received. 請求項1乃至3のいずれかにおいて、電力削減要請を受けた時間帯以外は施設毎またはエリア毎でのデマンド電力が過去1年以内の最大電力以下になるように運用計画を立案することを特徴とする水運用計画立案装置。   4. The operation plan according to any one of claims 1 to 3, wherein the demand power for each facility or each area is less than or equal to the maximum power within the past year except during the time period when the power reduction request is received. Water operation planning device. 請求項1乃至4のいずれかにおいて、電力削減要請を受けた時間帯以外では、施設毎またはエリア毎でのデマンド電力がオペレータが設定した目標電力以下になるように運用計画を立案することを特徴とする水運用計画立案装置。   5. The operation plan according to any one of claims 1 to 4, wherein the demand power for each facility or each area is less than or equal to a target power set by an operator, except for a time zone in which a power reduction request is received. Water operation planning device. 請求項1乃至5のいずれかにおいて、需要予測結果と最新の水位実績値から、安定供給継続時間と供給可能時間を算出し、システムの使用者に表示することを特徴とする水運用計画立案装置。   6. The water operation planning apparatus according to claim 1, wherein a stable supply continuation time and a supply available time are calculated from the demand prediction result and the latest water level actual value and displayed to a user of the system. . 請求項1乃至6のいずれかにおいて、需要予測結果と各時刻の水位計画値から安定供給継続時間と供給可能時間を算出し、表示することを特徴とする水運用計画立案装置。   7. The water operation planning apparatus according to claim 1, wherein a stable supply continuation time and a supply available time are calculated and displayed from the demand prediction result and the water level plan value at each time. 請求項1乃至7のいずれかにおいて、オペレータが設定した安定供給継続時間と供給可能時間の閾値と算出結果を比較し、再立案の有無を判定する再立案判定部を有することを特徴とする水運用計画立案装置。   8. The water according to claim 1, further comprising: a re-planning determination unit that compares the calculation result with a threshold value of a stable supply continuation time and a supplyable time set by an operator and determines whether or not re-planning is performed. Operation planning device.
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