JP4117266B2

JP4117266B2 - Demand monitoring control method and apparatus

Info

Publication number: JP4117266B2
Application number: JP2004134247A
Authority: JP
Inventors: 央登藤原; 玲横田; 慎二篠原
Original assignee: Mitsubishi Electric Corp
Current assignee: Mitsubishi Electric Corp
Priority date: 2003-09-01
Filing date: 2004-04-28
Publication date: 2008-07-16
Anticipated expiration: 2024-04-28
Also published as: JP2005102473A

Description

この発明は、電力系統における電力、水、ガス等の被監視量の使用量を監視し、デマンド時限開始からデマンド時限終了までの被監視量の使用量の総和が目標デマンドを超えないように、被監視量使用負荷の制御を行うデマンド監視制御方式および装置に関するものである。 This invention monitors the usage of monitored quantities of power, water, gas, etc. in the power system, so that the total usage of monitored quantities from the start of the demand time period to the end of the demand time period does not exceed the target demand. The present invention relates to a demand monitoring control method and apparatus for controlling a monitored usage load.

例えば、電力系統における電力のデマンド監視制御の従来方式は、例えば、特公平６−１０６００８号公報（特許文献１）に示されているように、負荷の投入後に、当該投入負荷の電力容量（被監視量容量）を含めて電力量（被監視量）の予測デマンド値を求め、当該予測デマンド値が目標デマンド値を超えた場合に優先度の低い負荷から順に遮断し、デマンド時限における電力の使用量を目標デマンド内に収めるようにしている。 For example, a conventional method of demand monitoring control of power in an electric power system is disclosed in Japanese Patent Publication No. 6-106008 (Patent Document 1), for example, after loading a load, Obtain the predicted demand value of the power amount (monitored amount) including the monitoring amount capacity), and when the predicted demand value exceeds the target demand value, cut off the load in order of priority and use the power in the demand time limit. The amount is kept within the target demand.

特公平６−１０６００８号公報（図４，図５、及びこれら図の説明）Japanese Examined Patent Publication No. 6-106008 (FIGS. 4 and 5 and explanation of these figures)

従来のデマンド監視制御装置では、前述のように、負荷の投入後に、当該投入負荷の電力容量（被監視量容量）を含めて電力量（被監視量）の予測デマンド値を求め、当該予測デマンド値が目標デマンド値を超えた場合に優先度の低い負荷から順に遮断し、デマンド時限における電力の使用量を目標デマンド内に収めるようにしているので、時限終了間際に目標デマンド値の近くまで電力（被監視量）を使用している状態にある場合において新たに負荷の投入があると、当該投入負荷の電力容量（被監視量容量）を含めて電力量（被監視量）の予測デマンド値を求め、当該予測デマンド値が目標デマンド値を超えた場合にデマンド時限における電力の使用量を目標デマンド内に収めるように優先度の低い負荷から順に遮断していくことになり、図７に示すように、負荷の遮断が間に合わずにデマンド時限時に目標デマンド値をオーバーする問題が生じる。 In the conventional demand monitoring control apparatus, as described above, after the load is input, the predicted demand value of the power amount (monitored amount) including the power capacity (monitored amount capacity) of the input load is obtained, and the predicted demand When the value exceeds the target demand value, the load is cut in order from the load with the lowest priority, and the power usage in the demand time period is kept within the target demand, so the power will be close to the target demand value just before the end of the time period. When a new load is input while (monitored amount) is being used, the predicted demand value of the power amount (monitored amount) including the power capacity (monitored amount capacity) of the input load If the predicted demand value exceeds the target demand value, the power usage in the demand time period will be shut off in order from the load with the lowest priority so that it falls within the target demand. As shown in FIG. 7, a problem arises that blocking the load is over the target demand value upon demand time period too late.

更に、このようなデマンド時限時の目標デマンド値のオーバーを回避するためにはデマンド予測や負荷の制御を安全サイドとする必要があるが、その場合は、逆に、デマンド時限時に目標デマンド値を不必要に下回ってしまう問題が生じる。 Furthermore, in order to avoid such an overshoot of the target demand value at the demand time limit, it is necessary to make demand prediction and load control safe, but in that case, the target demand value at the demand time limit is reversed. A problem arises that is unnecessarily lower.

特に、前記新たな負荷として例えばクレーンなどの短時間（例えば数十秒〜数分間）に大きな電力を要する負荷の場合、このような問題が顕著に現れる。 In particular, in the case of a load that requires a large amount of power in a short time (for example, several tens of seconds to several minutes) such as a crane as the new load, such a problem appears remarkably.

この発明は、かかる従来の実情に鑑みてなされたものであり、負荷投入により、被監視量の時限開始からの総和が、時限終了時に、目標デマンド値を超えないように適正な監視制御を行うことを主目的とするものである。また、目標デマンド値を不必要に下回らないように適正な監視制御を行うことを目的とするものである。 The present invention has been made in view of such conventional circumstances, and performs appropriate monitoring control so that the sum of the monitored amount from the start of the time limit does not exceed the target demand value at the end of the time period by loading the load. This is the main purpose. It is another object of the present invention to perform appropriate monitoring control so as not to unnecessarily fall below the target demand value.

この発明に係るデマンド監視制御方式は、デマンド時限開始からデマンド時限終了までの被監視量の総和が目標デマンド値以下となるように前記被監視量を監視制御するデマンド監視制御方式において、デマンド時限終了前の所定時間内における前記被監視量の使用要求有無の確認を行い、当該使用要求があった場合、当該使用要求による被監視量の使用量を含めて前記デマンド時限終了時の前記デマンド時限開始からデマンド時限終了までの被監視量の総和を予測し、当該使用要求による被監視量の使用量を含めて予測した前記デマンド時限開始からデマンド時限終了までの被監視量の予測総和量が前記目標デマンド値の内外の何れであるか判別し、前記予測総和量が前記目標デマンド値以内であれば、前記被監視量の使用要求を許可し、前記予測総和量が前記目標デマンド値外であれば、前記被監視量の使用要求を拒否するものである。 The demand monitoring control method according to the present invention is the demand monitoring control method for monitoring and controlling the monitored amount so that the sum of the monitored amounts from the start of the demand time period to the end of the demand time period is equal to or less than the target demand value. Check whether there is a usage request for the monitored amount within a predetermined time before, and if there is a usage request, start the demand time period at the end of the demand time period, including the usage amount of the monitored amount according to the usage request Predicting the sum of monitored amounts from the demand period to the end of the demand time period, and the predicted total amount of monitored quantities from the start of the demand time period to the end of the demand time period predicted including the usage amount of the monitored amount according to the use request is the target It is determined whether the demand value is inside or outside, and if the predicted total amount is within the target demand value, the use request of the monitored amount is permitted, If serial predicted total amount is out of the target demand value, it is to deny the use request of the monitored quantity.

また、この発明に係るデマンド監視制御方式は、デマンド時限開始からデマンド時限終了までの被監視量の総和が目標デマンド値以下となるように前記被監視量を監視制御するデマンド監視制御方式において、デマンド時限終了前の所定時間内における前記被監視量の使用要求有無の確認を行い、当該使用要求があった場合、当該使用要求による被監視量の使用量を含めて前記デマンド時限終了時の前記デマンド時限開始からデマンド時限終了までの被監視量の総和を予測し、当該使用要求による被監視量の使用量を含めて予測した前記デマンド時限開始からデマンド時限終了までの被監視量の予測総和量が前記目標デマンド値の内外の何れであるか判別し、前記予測総和量が前記目標デマンド値外であれば、前記使用要求のあった被監視量より優先順位の低い使用中の被監視量を、前記使用要求による被監視量の使用量を含めて予測した前記デマンド時限開始からデマンド時限終了までの被監視量の予測総和量が前記目標デマンド値以内になるまで落して、前記被監視量の使用要求を許可するものである。 The demand monitoring control system according to the present invention is the demand monitoring control system for monitoring and controlling the monitored quantity so that the sum of the monitored quantities from the start of the demand time period to the end of the demand time period is equal to or less than the target demand value. Whether or not the monitored amount is requested to be used within a predetermined time before the end of the time limit is confirmed, and if there is a request for use, the demand at the end of the demand time period including the amount of the monitored amount used according to the use request. Predict the sum of the monitored amount from the start of the time period to the end of the demand time period, and the predicted total amount of the monitored amount from the start of the demand time period to the end of the demand time period predicted including the usage amount of the monitored amount according to the use request is It is determined whether the target demand value is inside or outside, and if the predicted total amount is outside the target demand value, the monitored amount requested to be used The predicted total amount of the monitored amount from the start of the demand time period to the end of the demand time period, in which the monitored amount in use having a low priority is predicted including the usage amount of the monitored amount according to the use request is the target demand value The usage amount of the monitored amount is permitted until the value is within the range.

また、この発明に係るデマンド監視制御装置は、デマンド時限開始からデマンド時限終了までの被監視量の総和が目標デマンド値以下となるように前記被監視量を監視制御するデマンド監視制御装置において、デマンド時限終了前の所定時間内における前記被監視量の使用要求有無を確認し、当該使用要求があった場合、当該使用要求による被監視量の使用量を含めて前記デマンド時限終了時の前記デマンド時限開始からデマンド時限終了までの被監視量の総和を予測し、当該使用要求による被監視量の使用量を含めて予測した前記デマンド時限開始からデマンド時限終了までの被監視量の予測総和量が前記目標デマンド値の内外の何れであるか判別し、前記予測総和量が前記目標デマンド値以内であれば、前記被監視量の使用要求を許可し、前記予測総和量が前記目標デマンド値外であれば、前記被監視量の使用要求を拒否する機能を有しているものである。 The demand monitoring control device according to the present invention is the demand monitoring control device for monitoring and controlling the monitored amount so that the sum of the monitored amounts from the start of the demand time period to the end of the demand time period is equal to or less than the target demand value. Check whether or not the monitored amount is requested to be used within a predetermined time before the end of the time limit, and if there is a request for use, the demand time limit at the end of the demand time period including the amount of monitored amount used by the use request. The total amount of monitored amounts from the start to the end of the demand time period is predicted, and the predicted total amount of monitored amounts from the start of the demand time period to the end of the demand time period predicted including the usage amount of the monitored amount by the use request is It is determined whether the target demand value is inside or outside, and if the predicted total amount is within the target demand value, the use request of the monitored amount is permitted. If the predicted total amount outside the target demand value, the one in which has the function to deny use request of the monitored quantity.

また、この発明に係るデマンド監視制御装置は、デマンド時限開始からデマンド時限終了までの被監視量の総和が目標デマンド値以下となるように前記被監視量を監視制御するデマンド監視制御装置において、デマンド時限終了前の所定時間内における前記被監視量の使用要求有無を確認し、当該使用要求があった場合、当該使用要求による被監視量の使用量を含めて前記デマンド時限終了時の前記デマンド時限開始からデマンド時限終了までの被監視量の総和を予測し、当該使用要求による被監視量の使用量を含めて予測した前記デマンド時限開始からデマンド時限終了までの被監視量の予測総和量が前記目標デマンド値の内外の何れであるか判別し、前記予測総和量が前記目標デマンド値外であれば、前記使用要求のあった被監視量より優先順位の低い使用中の被監視量を、前記使用要求による被監視量の使用量を含めて予測した前記デマンド時限開始からデマンド時限終了までの被監視量の予測総和量が前記目標デマンド値以内になるまで落して、前記被監視量の使用要求を許可する機能を有しているものである。 The demand monitoring control device according to the present invention is the demand monitoring control device for monitoring and controlling the monitored amount so that the sum of the monitored amounts from the start of the demand time period to the end of the demand time period is equal to or less than the target demand value. Check whether or not the monitored amount is requested to be used within a predetermined time before the end of the time limit, and if there is a request for use, the demand time limit at the end of the demand time period including the amount of monitored amount used by the use request. The total amount of monitored amounts from the start to the end of the demand time period is predicted, and the predicted total amount of monitored amounts from the start of the demand time period to the end of the demand time period predicted including the usage amount of the monitored amount by the use request is It is determined whether the target demand value is inside or outside, and if the predicted total amount is outside the target demand value, the monitored amount requested to be used is determined. The predicted total amount of the monitored amount from the start of the demand time period to the end of the demand time period in which the monitored amount in use with a low priority is predicted including the usage amount of the monitored amount according to the use request is within the target demand value And has a function of permitting use of the monitored amount.

この発明は、デマンド時限開始からデマンド時限終了までの被監視量の総和が目標デマンド値以下となるように前記被監視量を監視制御するデマンド監視制御方式において、デマンド時限終了前の所定時間内における前記被監視量の使用要求有無の確認を行い、当該使用要求があった場合、当該使用要求による被監視量の使用量を含めて前記デマンド時限終了時の前記デマンド時限開始からデマンド時限終了までの被監視量の総和を予測し、当該使用要求による被監視量の使用量を含めて予測した前記デマンド時限開始からデマンド時限終了までの被監視量の予測総和量が前記目標デマンド値の内外の何れであるか判別し、前記予測総和量が前記目標デマンド値以内であれば、前記被監視量の使用要求を許可し、前記予測総和量が前記目標デマンド値外であれば、前記被監視量の使用要求を拒否するようにしたので、時限終了間際での負荷投入により、被監視量の時限開始からの総和が、時限終了時に、目標デマンド値を超えないように適正な監視制御を行うことができるという効果がある。 The present invention relates to a demand monitoring control method for monitoring and controlling the monitored amount so that the sum of the monitored amounts from the start of the demand time period to the end of the demand time period is equal to or less than the target demand value, and within a predetermined time before the end of the demand time period Check whether there is a usage request for the monitored amount, and if there is a usage request, including the usage amount of the monitored amount according to the usage request, from the start of the demand time period at the end of the demand time period to the end of the demand time period The predicted total amount of the monitored amount from the start of the demand time period to the end of the demand time period predicted by including the usage amount of the monitored amount according to the use request is either inside or outside the target demand value. If the predicted total amount is within the target demand value, a use request for the monitored amount is permitted, and the predicted total amount is determined to be the target data. If it is outside the threshold value, the use request of the monitored amount is rejected, so that the sum of the monitored amount from the start of the time limit is set to the target demand value at the end of the time limit due to the loading at the end of the time limit. There is an effect that appropriate monitoring control can be performed so as not to exceed.

また、この発明には、デマンド時限開始からデマンド時限終了までの被監視量の総和が目標デマンド値以下となるように前記被監視量を監視制御するデマンド監視制御方式において、デマンド時限終了前の所定時間内における前記被監視量の使用要求有無の確認を行い、当該使用要求があった場合、当該使用要求による被監視量の使用量を含めて前記デマンド時限終了時の前記デマンド時限開始からデマンド時限終了までの被監視量の総和を予測し、当該使用要求による被監視量の使用量を含めて予測した前記デマンド時限開始からデマンド時限終了までの被監視量の予測総和量が前記目標デマンド値の内外の何れであるか判別し、前記予測総和量が前記目標デマンド値外であれば、前記使用要求のあった被監視量より優先順位の低い使用中の被監視量を、前記使用要求による被監視量の使用量を含めて予測した前記デマンド時限開始からデマンド時限終了までの被監視量の予測総和量が前記目標デマンド値以内になるまで落して、前記被監視量の使用要求を許可するようにしたので、時限終了間際での負荷投入により、被監視量の時限開始からの総和が、時限終了時に、目標デマンド値を超えないようにしかも目標デマンド値を不必要に下回らないように適正な監視制御を行うことができるという効果がある。 Further, the present invention provides a demand monitoring control method for monitoring and controlling the monitored amount so that the sum of the monitored amounts from the start of the demand time period to the end of the demand time period is equal to or less than the target demand value. Check whether there is a usage request for the monitored amount in time, and if there is a usage request, including the usage amount of the monitored amount according to the usage request, the demand time period from the start of the demand time period at the end of the demand time period The total amount of monitored amounts until the end is predicted, and the predicted total amount of monitored amounts from the start of the demand time period to the end of the demand time period predicted including the usage amount of the monitored amount according to the use request is the target demand value. It is determined whether it is inside or outside, and if the predicted total amount is outside the target demand value, it is in use that has a lower priority than the monitored amount requested to be used. The monitored amount is reduced until the predicted total amount of the monitored amount from the start of the demand time period to the end of the demand time period predicted including the usage amount of the monitored amount according to the use request falls within the target demand value, Since the usage request for the monitored amount is allowed, the total demand from the start of the monitored amount will not exceed the target demand value at the end of the time period by loading the load just before the end of the time period. There is an effect that appropriate monitoring control can be performed so as not to be unnecessarily lower than.

また、この発明は、デマンド時限開始からデマンド時限終了までの被監視量の総和が目標デマンド値以下となるように前記被監視量を監視制御するデマンド監視制御装置において、デマンド時限終了前の所定時間内における前記被監視量の使用要求有無を確認し、当該使用要求があった場合、当該使用要求による被監視量の使用量を含めて前記デマンド時限終了時の前記デマンド時限開始からデマンド時限終了までの被監視量の総和を予測し、当該使用要求による被監視量の使用量を含めて予測した前記デマンド時限開始からデマンド時限終了までの被監視量の予測総和量が前記目標デマンド値の内外の何れであるか判別し、前記予測総和量が前記目標デマンド値以内であれば、前記被監視量の使用要求を許可し、前記予測総和量が前記目標デマンド値外であれば、前記被監視量の使用要求を拒否する機能を有しているので、時限終了間際での負荷投入により、被監視量の時限開始からの総和が、時限終了時に、目標デマンド値を超えないように適正な監視制御を行うことができるデマンド監視制御装置を実現できるという効果がある。 Further, the present invention provides a demand monitoring control device that monitors and controls the monitored amount so that the sum of the monitored amounts from the start of the demand time period to the end of the demand time period is equal to or less than the target demand value. From the start of the demand time period at the end of the demand time period to the end of the demand time period, including the usage amount of the monitored quantity according to the use request. The predicted total amount of the monitored amount from the start of the demand time period to the end of the demand time period predicted including the usage amount of the monitored amount according to the use request is within or outside the target demand value. If the predicted total amount is within the target demand value, the usage request for the monitored amount is permitted, and the predicted total amount is the target total amount. If it is outside the mand value, it has a function of rejecting the use request of the monitored amount, so that the sum of the monitored amount from the start of the time limit is set to There is an effect that it is possible to realize a demand monitoring control apparatus capable of performing appropriate monitoring control so as not to exceed the demand value.

また、この発明は、デマンド時限開始からデマンド時限終了までの被監視量の総和が目標デマンド値以下となるように前記被監視量を監視制御するデマンド監視制御装置において、デマンド時限終了前の所定時間内における前記被監視量の使用要求有無を確認し、当該使用要求があった場合、当該使用要求による被監視量の使用量を含めて前記デマンド時限終了時の前記デマンド時限開始からデマンド時限終了までの被監視量の総和を予測し、当該使用要求による被監視量の使用量を含めて予測した前記デマンド時限開始からデマンド時限終了までの被監視量の予測総和量が前記目標デマンド値の内外の何れであるか判別し、前記予測総和量が前記目標デマンド値外であれば、前記使用要求のあった被監視量より優先順位の低い使用中の被監視量を、前記使用要求による被監視量の使用量を含めて予測した前記デマンド時限開始からデマンド時限終了までの被監視量の予測総和量が前記目標デマンド値以内になるまで落して、前記被監視量の使用要求を許可する機能を有しているので、時限終了間際での負荷投入により、被監視量の時限開始からの総和が、時限終了時に、目標デマンド値を超えないようにしかも目標デマンド値を不必要に下回らないように適正な監視制御を行うことができるデマンド監視制御装置を実現できるという効果がある。 Further, the present invention provides a demand monitoring control device that monitors and controls the monitored amount so that the sum of the monitored amounts from the start of the demand time period to the end of the demand time period is equal to or less than the target demand value. From the start of the demand time period at the end of the demand time period to the end of the demand time period, including the usage amount of the monitored quantity according to the use request. The predicted total amount of the monitored amount from the start of the demand time period to the end of the demand time period predicted including the usage amount of the monitored amount according to the use request is within or outside the target demand value. If the predicted total amount is outside the target demand value, the monitored amount in use having a lower priority than the monitored amount requested to be used is used. The monitored amount is decreased until the predicted total amount of the monitored amount from the start of the demand time period to the end of the demand time period is within the target demand value. A function to allow usage requests for volume is used, so that the total demand from the start of the monitored amount will not exceed the target demand value at the end of the time period by loading the load just before the end of the time period. There is an effect that it is possible to realize a demand monitoring control apparatus capable of performing appropriate monitoring control so as not to be unnecessarily below the value.

実施の形態１．
以下、この発明の実施の形態１を、電力系統における電力量のデマンド監視制御の場合を事例として図１〜図４により説明する。図１はデマンド監視制御方式を実行するデマンド監視制御装置の構成の一例を示す図、図２は定常時の動作フロ−を説明する図、図３は負荷追加原則禁止時間帯における動作フロ−を説明する図、図４はデマンドの推移を示す図である。 Embodiment 1 FIG.
Hereinafter, Embodiment 1 of the present invention will be described with reference to FIG. 1 to FIG. FIG. 1 is a diagram showing an example of a configuration of a demand monitoring control apparatus that executes a demand monitoring control system, FIG. 2 is a diagram for explaining an operation flow in a steady state, and FIG. 3 shows an operation flow in a load addition principle prohibition time zone. FIG. 4 and FIG. 4 are diagrams illustrating demand transition.

先ず、図１により、構成、及び構成要素である各手段の機能を説明する。 First, referring to FIG. 1, the configuration and the function of each means that is a component will be described.

デマンド監視制御方式を実行するデマンド監視制御装置は、時限信号発生手段１と、被監視量測定手段２と、時間経過演算手段３と、予測デマンド演算手段４と、設定値記憶手段５と、任意投入禁止信号発生手段６と、投入信号監視手段７と、投入・遮断信号監視手段８と、投入負荷順位比較手段９と、投入・遮断信号発生手段１０とを備えている。なお、前記投入・遮断信号監視手段８は、仮予測デマンド演算手段８１と投入・遮断演算手段８２とを備えている。 The demand monitoring control apparatus for executing the demand monitoring control system includes a time signal generating unit 1, a monitored amount measuring unit 2, a time lapse calculating unit 3, a predicted demand calculating unit 4, a set value storage unit 5, and an arbitrary An input prohibition signal generation means 6, an input signal monitoring means 7, an input / cutoff signal monitoring means 8, an input load rank comparison means 9, and an input / cutoff signal generation means 10 are provided. The on / off signal monitoring means 8 includes a temporary predicted demand calculating means 81 and an on / off calculating means 82.

前記時限信号発生手段１は、デマンド時限の時限信号を発生する機能を有しているものである。 The time signal generating means 1 has a function of generating a time signal for a demand time period.

前記被監視量測定手段２は、図示しない負荷で使用される電力量（換言すれば被監視量）を測定する機能を有しているものである。 The monitored amount measuring means 2 has a function of measuring the amount of electric power (in other words, the monitored amount) used by a load (not shown).

前記時間経過演算手段３は、前記時限信号発生手段１から時限開始（図３の例では０分）からの経過時間を演算する機能を有しているものである。 The time elapsed calculating means 3 has a function of calculating the elapsed time from the time limit signal generating means 1 from the time limit start (0 minutes in the example of FIG. 3).

前記予測デマンド演算手段４は、前記被監視量測定手段２により測定された負荷の使用電力量（換言すれば使用被監視量）と前記時間経過演算手段３により得られた経過時間とによって、デマンド時限終了時（図３の例では３０分）の予測デマンド値を演算する機能を有しているものである。 The predicted demand calculating means 4 determines the demand based on the amount of power used by the load (in other words, the amount to be monitored) measured by the monitored amount measuring means 2 and the elapsed time obtained by the time elapsed calculating means 3. It has a function of calculating a predicted demand value at the end of the time limit (30 minutes in the example of FIG. 3).

前記設定値記憶手段５は、電力会社との契約デマンド値などの目標デマンド値D1、各負荷の電力容量（換言すれば被監視量容量）、各負荷の優先制御順位などの制御順位、負荷の任意投入禁止時間（換言すればデマンド時限終了前の所定時間（図３の例では２７分〜３０分））を記憶する機能を有しているものである。 The set value storage means 5 includes a target demand value D1 such as a contract demand value with an electric power company, a power capacity of each load (in other words, a monitored capacity), a control order such as a priority control order of each load, It has a function of storing an arbitrary insertion prohibition time (in other words, a predetermined time before the end of the demand time period (27 to 30 minutes in the example of FIG. 3)).

前記任意投入禁止信号発生手段６は、前記時間経過演算手段３から経過時間信号を入力し、前記デマンド時限開始から所定の時間（図３の例では２７分）を経過したとき各負荷の任意投入を禁止する任意投入禁止信号を発生したり任意投入禁止警報を発したりする機能を有しているものである。 The arbitrary input prohibition signal generating means 6 receives an elapsed time signal from the time lapse calculating means 3, and arbitrarily inputs each load when a predetermined time (27 minutes in the example of FIG. 3) has elapsed since the start of the demand time limit. It has a function of generating an arbitrary input prohibition signal for prohibiting the input and issuing an arbitrary input prohibition alarm.

前記投入信号監視手段７は、制御を行う負荷の投入があったか否かを監視する機能を有しているものである。 The input signal monitoring means 7 has a function of monitoring whether or not a load to be controlled has been input.

前記仮予測デマンド演算手段８１は、投入要求のあった負荷を仮に入れたとすればデマンド時限終了時に到達するであろう予測デマンド値を演算する機能を有しているものである。 The temporary predicted demand calculation means 81 has a function of calculating a predicted demand value that will be reached at the end of the demand time period if the load requested to be input is temporarily input.

前記投入・遮断演算手段８２は、前記仮予測デマンド演算手段８１による予測デマンド値の演算結果と、前記設定値記憶手段５に記憶されている各負荷の電力容量（換言すれば被監視量容量）や制御順位とから、投入可能な負荷および遮断可能な負荷を計算により選択する機能を有しているものである。 The on / off operation means 82 calculates the predicted demand value calculated by the temporary predicted demand calculation means 81 and the power capacity of each load stored in the set value storage means 5 (in other words, the monitored capacity). And a function of selecting a load that can be turned on and a load that can be cut off by calculation from the control order.

前記投入・遮断信号監視手段８は、負荷の投入遮断状態の監視および負荷の投入遮断の制御を行う機能を有しているものである。 The on / off signal monitoring means 8 has a function of monitoring the on / off state of the load and controlling the on / off of the load.

前記投入負荷順位比較手段９は、前記設定値記憶手段５に記憶されている各負荷の優先順位などの制御順位の比較を行う機能を有しているものである。 The input load rank comparing means 9 has a function of comparing control ranks such as priority orders of loads stored in the set value storage means 5.

前記投入・遮断信号発生手段１０は、前記投入・遮断信号監視手段８で選定された負荷の投入および遮断を実際に行う機能を有しているものである。 The on / off signal generating means 10 has a function of actually turning on and off the load selected by the on / off signal monitoring means 8.

次に、図２により、図１及び図３と関連付けながら、動作の説明をする。 Next, the operation will be described with reference to FIG. 2 in association with FIG. 1 and FIG.

動作説明に当たり、事前に、前記デマンド時限および負荷の前記任意投入禁止時間（換言すればデマンド時限終了前の所定時間）の事例について説明しておく。図３に示すように、前記デマンド時限を３０分間とし、前記設定値記憶手段５に記憶されている前記任意投入禁止時間をデマンド終了間際の３分間（即ち２７分〜３０分）とする。 Prior to the description of the operation, an example of the demand time period and the arbitrary input prohibition time of the load (in other words, a predetermined time before the end of the demand time period) will be described. As shown in FIG. 3, the demand time limit is set to 30 minutes, and the arbitrary input prohibition time stored in the set value storage means 5 is set to 3 minutes (ie, 27 minutes to 30 minutes) just before the end of demand.

以下、最初に、［定常時（例えばデマンド時限の０分〜２７分）の動作］を説明し、その後、［時限終了間際（例えばデマンド時限の２７分〜３０分）の動作］について説明する。 Hereinafter, first, [operation at a steady time (for example, demand period 0 minutes to 27 minutes)] will be described, and then [operation at the end of a period (for example, demand period 27 minutes to 30 minutes)] will be described.

［定常時（例えばデマンド時限の０分〜２７分）の動作］ [Operation at steady time (for example, 0 to 27 minutes of demand time limit)]

まず、定常時、即ち時限開始から２７分までの間の動作について図２を主体にして説明する。なお、時限の経過時間は前記時限経過演算手段３（図１参照）により検出する。 First, the operation in the steady state, that is, the operation from the start of the time limit to 27 minutes will be described mainly with reference to FIG. The elapsed time of the time period is detected by the time period elapsed calculation means 3 (see FIG. 1).

負荷の投入要求（換言すれば被監視量の使用要求）があれば（ステップST201）、原則としてその負荷を投入する（ステップST202）。即ち、負荷側から見た場合、負荷は任意に投入（換言すれば使用）できる。 If there is a load input request (in other words, a request for using the monitored amount) (step ST201), the load is input in principle (step ST202). That is, when viewed from the load side, the load can be input arbitrarily (in other words, used).

所定のデマンド演算時間ごとに前記予測デマンド値演算手段４（図１参照）により、時限終了時のデマンド値を予測演算する（ステップST203）。なお、前述の所定のデマンド演算時間とは、例えば１０秒である。また、デマンド値の予測演算は、当該演算をする時刻から所定時間（例えば６０秒）遡る時刻の間における使用電力量（即ち、使用被監視量）と、それ以前の使用電力量（換言すれば使用被監視量）と経過時間（それ以前の当該演算をする時刻から所定時間（例えば６０秒）遡る時刻）とにより予測演算する。 The demand value at the end of the time limit is predicted and calculated by the predicted demand value calculation means 4 (see FIG. 1) every predetermined demand calculation time (step ST203). The predetermined demand calculation time is, for example, 10 seconds. In addition, the demand value prediction calculation is performed using a power consumption amount (that is, a monitored amount) used during a predetermined time (for example, 60 seconds) from a time when the calculation is performed, and a power consumption amount before that (in other words, a power consumption amount before that). Predictive calculation is performed based on the monitored amount) and the elapsed time (a time that goes back a predetermined time (for example, 60 seconds) from the previous calculation time).

次いで、前記ステップST203における予測演算結果である予測デマンド値が、前記目標デマンド値D1を超えているかどうか判断する（ステップST204）。 Next, it is determined whether or not the predicted demand value, which is the prediction calculation result in step ST203, exceeds the target demand value D1 (step ST204).

前記ステップST204での判断により、前記ステップST203における予測演算結果である予測デマンド値が、前記目標デマンド値D1を超えている場合は、前記投入負荷順位比較手段９（図１参照）により負荷遮断の優先順位の情報を入手し(ステップST205)、 If the predicted demand value, which is the prediction calculation result in step ST203, exceeds the target demand value D1 based on the determination in step ST204, the input load rank comparing means 9 (see FIG. 1) Obtain priority information (step ST205),

前記目標デマンド値D1を超えなくなるように、最も優先順位の低い負荷から順に遮断する（換言すれば落す）負荷を選定し、当該選定された負荷を遮断する（換言すれば落す）（ステップST206）。具体的には、例えば、前記投入・遮断信号監視手段８（図１参照）が、前記投入信号監視手段７（図１参照）からの信号により、現在投入されている（換言すれば現在使用されている）負荷が優先順位１、２、５、６、７であると認識している場合、優先順位７の負荷を遮断する（換言すれば落す）。前記投入・遮断信号監視手段８（図１参照）での演算の結果、優先順位７の負荷を遮断する（換言すれば落す）だけでは前記目標デマンド値D1を超えなくなるようにできない場合は、優先順位７、６の負荷を遮断し（換言すれば落し）、前記目標デマンド値D1を超えなくなるようにする。 In order not to exceed the target demand value D1, a load that is cut off in order from the load with the lowest priority (in other words, dropped) is selected, and the selected load is cut off (in other words, dropped) (step ST206). . Specifically, for example, the on / off signal monitoring means 8 (see FIG. 1) is currently on (in other words, currently used) by a signal from the on signal monitoring means 7 (see FIG. 1). If it is recognized that the load is priority 1, 2, 5, 6, 7, the load of priority 7 is cut off (in other words, dropped). As a result of calculation by the on / off signal monitoring means 8 (see FIG. 1), priority cannot be exceeded if it is not possible to exceed the target demand value D1 only by cutting off the load of priority order 7 (in other words, dropping it). The loads of ranks 7 and 6 are cut off (in other words, dropped) so that the target demand value D1 is not exceeded.

［時限終了間際（例えば２７分〜３０分（即ちデマンド時限終了前の所定時間））の動作］ [Operation near the end of the time limit (for example, 27 to 30 minutes (ie, a predetermined time before the end of the demand time limit))

前記時間経過演算手段３（図１参照）において、計算された経過時間が例えば３０分−３分で時限開始から例えば２７分を経過しているかどうか、つまり、デマンド時限終了前の所定時間内であるか外であるか、換言すれば任意投入禁止領域に入っているかいないかを判断し（ステップST301）、 In the time lapse calculating means 3 (see FIG. 1), whether the calculated elapsed time is 30 minutes-3 minutes, for example 27 minutes from the start of the time limit, that is, within a predetermined time before the end of the demand time limit. It is determined whether it is present or not, in other words whether it is in the optional entry prohibited area (step ST301),

このステップST301による判断の結果が、時限開始から例えば２７分を経過している場合、つまり、デマンド時限終了前の所定時間内である場合、換言すれば任意投入禁止時間帯に入ると、その旨（つまり、負荷任意投入禁止の状態にある旨）を前記任意投入禁止信号発生手段６（図１参照）が発生する（ステップST302）。具体的には、前記任意投入禁止信号発生手段６（図１参照）が信号を発生すると、この信号により、投入されていない（換言すれば使用されていない）負荷の投入スイッチ（例えば電源スイッチ）の近傍に設けた表示ランプ（図示省略）を点灯させる。この表示ランプの点灯により、作業者は任意投入禁止時間帯であることを認識でき、不急の場合には、表示ランプの消灯（例えば、最大３分後の所謂デマンド時限終了時に消灯）を待って当該負荷を投入する（換言すれば使用する）ことができる。 If, for example, 27 minutes have passed since the start of the time limit, i.e., within a predetermined time before the end of the demand time limit, in other words, if the optional input prohibition time zone is entered, this is indicated. The arbitrary input prohibition signal generating means 6 (see FIG. 1) generates (that is, that the load is arbitrarily input prohibited) (step ST302). Specifically, when the arbitrary input prohibition signal generating means 6 (see FIG. 1) generates a signal, a load input switch (for example, a power switch) that is not input (in other words, not used) is generated by this signal. A display lamp (not shown) provided in the vicinity of is turned on. By turning on the display lamp, the operator can recognize that it is in the time period for which the optional charging is prohibited, and in an emergency, wait for the display lamp to turn off (for example, turn off at the end of the so-called demand period after 3 minutes at the maximum). The load can be input (in other words, used).

次いで、負荷の投入要求（換言すれば使用要求）の有無を判断し（ステップST303）、前記ステップST301での判断結果が「経過時間が例えば２７分を経過している」（換言すればデマンド時限終了前の所定時間内）であるにも拘わらず、例えば電源スイッチの押下等の負荷の投入要求（換言すれば使用要求）があると、前記投入信号監視手段７（図１参照）は投入要求（換言すれば使用要求）を確認する。 Next, it is determined whether or not there is a load input request (in other words, a use request) (step ST303), and the determination result in step ST301 is “elapsed time has passed, for example, 27 minutes” (in other words, demand time limit). If there is a load application request (in other words, a use request) such as pressing of a power switch, for example, the input signal monitoring means 7 (refer to FIG. 1) (In other words, use request) is confirmed.

前記ステップST303での判断結果が負荷の投入要求（換言すれば使用要求）「有り」の場合、前記仮予測デマンド演算手段８１（図１参照）は、前記予測デマンド演算手段４（図１参照）による計算結果を入力すると共に、投入要求（換言すれば使用要求）のあった負荷の負荷容量（換言すれば被監視量容量）を前記記憶設定手段５（図１参照）から入力し、投入要求（換言すれば使用要求）のあった負荷を投入した場合（換言すれば使用した場合）のデマンド時限終了時の予測デマンド値を演算する（ステップST304）。 When the determination result in step ST303 is a load input request (in other words, a use request) “present”, the temporary predicted demand calculating means 81 (see FIG. 1) is the predicted demand calculating means 4 (see FIG. 1). Is input from the storage setting means 5 (see FIG. 1), and the load request of the load for which the input request (in other words, use request) has been input is input from the storage setting means 5 (see FIG. 1). A predicted demand value at the end of the demand time period when a load having a demand (in other words, a use request) is input (in other words, when used) is calculated (step ST304).

他方、前記ステップST303での判断の結果、負荷の投入要求（換言すれば使用要求）が無い場合には、所定のデマンド予測演算時間（例えば１秒）ごとに、前述の図２におけるステップST203〜ステップST206によるデマンド予測をすることとなる。 On the other hand, as a result of the determination in step ST303, if there is no load input request (in other words, a use request), step ST203 to step ST203 in FIG. 2 described above every predetermined demand prediction calculation time (for example, 1 second). The demand is predicted at step ST206.

次いで、前記ステップST304での演算による予測デマンド値が、前記記憶設定手段５（図１参照）に記憶されている前記目標デマンド値D１を超えているかどうか前記投入・遮断制御演算手段８２で判断する(ステップST305)。 Next, the on / off control calculation means 82 determines whether or not the predicted demand value obtained by the calculation at step ST304 exceeds the target demand value D1 stored in the storage setting means 5 (see FIG. 1). (Step ST305).

前記ステップST305での判断の結果、前記ステップST304での演算による予測デマンド値が、前記記憶設定手段５（図１参照）に記憶されている前記目標デマンド値D１を超えていない場合、前記投入・遮断信号監視手段８（図１参照）は、前記投入・遮断信号発生手段１０（図１参照）に投入要求（換言すれば使用要求）のあった負荷を投入（換言すれば使用）させる(ステップST306)。 As a result of the determination in step ST305, if the predicted demand value obtained by the calculation in step ST304 does not exceed the target demand value D1 stored in the storage setting means 5 (see FIG. 1), the input / The shut-off signal monitoring means 8 (see FIG. 1) puts on (in other words, uses) a load that has been requested to put in (in other words, a use request) to the on / off signal generating means 10 (see FIG. 1) (steps in other words) ST306).

他方、前記ステップST305での判断の結果、前記ステップST304での演算による予測デマンド値が、前記記憶設定手段５（図１参照）に記憶されている目標デマンド値D１を超える場合、前記投入負荷順位比較手段９（図１参照）より負荷遮断の優先順位の情報を入手する(ステップST307)。 On the other hand, as a result of the determination in step ST305, when the predicted demand value obtained by the calculation in step ST304 exceeds the target demand value D1 stored in the storage setting means 5 (see FIG. 1), the input load rank Information on the priority order of load shedding is obtained from the comparison means 9 (see FIG. 1) (step ST307).

次いで、投入しようとする負荷（換言すれば投入要求のあった負荷）と現在遮断していない負荷(即ち、現在電力を供給中の負荷（換言すれば現在使用中の負荷）)との優先順位の比較を行い、投入要求のあった負荷よりも優先順位の低い負荷が遮断されていないかどうか、即ち投入要求のあった負荷よりも優先順位の低い負荷が現在給電中であるかどうか（換言すれば現時使用中であるかどうか）判断する(ステップST308)。 Next, the priority order of the load to be turned on (in other words, the load requested to be turned on) and the load that is not currently cut off (ie, the load that is currently supplying power (in other words, the load that is currently in use)) A load having a lower priority than the load requested to be turned on is not cut off, that is, a load having a lower priority than the load requested to be turned on is currently being fed (in other words, Then, it is determined whether or not it is currently used (step ST308).

前記ステップST305での判断の結果、投入要求のあった負荷よりも優先順位の低い負荷が遮断されていない場合（即ち使用されている場合）、前記仮予測デマンド演算手段８１（図１参照）によって、優先順位の低い負荷を遮断し投入要求のあった負荷を投入した場合のデマンド時限終了時の予測デマンド値を演算して求める(ステップST309)。 As a result of the determination in step ST305, when a load having a lower priority than the load requested to be input is not cut off (that is, used), the temporary predicted demand calculation means 81 (see FIG. 1) Then, the predicted demand value at the end of the demand time period when the load having a low priority order is cut off and the load requested to be input is calculated and calculated (step ST309).

次いで、前記ステップST309で求められた予測デマンド値が、前記記憶設定手段５（図１参照）に記憶されている目標デマンド値D1を超えないかどうか判断する(ステップST310)。 Next, it is determined whether or not the predicted demand value obtained in step ST309 does not exceed the target demand value D1 stored in the storage setting means 5 (see FIG. 1) (step ST310).

前記ステップST310での判断の結果、前記ステップST309で求められた予測デマンド値が、前記記憶設定手段５（図１参照）に記憶されている目標デマンド値D1を超えない場合は、前記投入・遮断信号発生手段１０（図１参照）により、優先順位の低い負荷を遮断する（換言すれば落す）と共に（好ましくは同時に）、投入要求のあった負荷の投入（換言すれば使用開始）を行う(ステップST311)。 If the predicted demand value obtained in step ST309 does not exceed the target demand value D1 stored in the storage setting means 5 (see FIG. 1) as a result of the determination in step ST310, the input / blocking is performed. The signal generation means 10 (see FIG. 1) cuts off the load with a low priority (in other words, drops it) (preferably simultaneously) and inputs the load requested to be input (in other words, starts use) ( Step ST311).

前記ステップST311において優先順位の低い負荷を遮断する（換言すれば落す）と共に（好ましくは同時に）、投入要求のあった負荷の投入（換言すれば使用開始）を行うので、従来の場合（即ち、所定の演算時間が１０秒ごとであることを考慮すると新たに投入した負荷による使用電力を反映したデマンド予測がなされるまでに、最低１０秒、負荷の使用状況や経過時間にもよるが数十秒程度かかることが多く、この間に図５に示すように使用量の増加が起こり、その後優先順位の負荷を遮断する場合）に比較し、契約デマンドを超過する可能性は非常に低くなる。 In step ST311, a load having a low priority is shut off (in other words, dropped) (preferably simultaneously), and a load that has been requested to be input (in other words, start of use) is performed. Considering that the predetermined calculation time is every 10 seconds, it will be several tens of seconds, depending on the load usage status and elapsed time, before the demand prediction reflecting the power consumption due to the newly input load is made. In many cases, it takes about a second, and the use amount increases as shown in FIG. 5, and the possibility of exceeding the contract demand is very low compared to the case where the priority load is cut off thereafter.

また、前述の定常時（例えばデマンド時限の０分〜２７分）においては、投入要求に応じて負荷を投入し、その結果、デマンドを予測し目標デマンドD1を超えると判断したとき、優先度の低い負荷を遮断するようにしたので、投入要求される負荷としてクレーンなどの短時間（例えば数十秒〜数分間）に大きな電力（換言すれば被監視量）を必要とする負荷も使える。 Moreover, in the above-mentioned steady time (for example, 0 to 27 minutes of the demand time period), when a load is input in response to an input request and, as a result, it is determined that the demand is predicted and exceeds the target demand D1, Since a low load is cut off, a load that requires a large amount of power (in other words, a monitored amount) in a short time (for example, several tens of seconds to several minutes) such as a crane can be used as a load required to be input.

即ち、例えば、前記定常時（例えばデマンド時限の０分〜２７分）においても前述の図３（任意投入禁止時間帯がある場合の動作）と同様の負荷投入の判断ロジック（即ち、前記ステップST305）の機能を持たせると、例えば時限開始から１分後にクレーンを投入要求すると、クレーンは負荷容量が大きいため判断ロジック（即ち、前記ステップST305）でのデマンド予測が前記目標デマンド値D1を超え、時限の初期において負荷容量の大きな負荷を投入できないという問題が生じるが、前述のように前記定常時（例えばデマンド時限の０分〜２７分）においては負荷の任意投入を許すようにすれば、かかる問題は解消できる。さらに、時限終了間際においては上述したように契約デマンドを超過する可能性は低くなる。 That is, for example, even in the normal state (for example, 0 to 27 minutes of the demand time limit), the same load input determination logic (that is, step ST305) as in FIG. ), For example, when a crane is requested to be input after 1 minute from the start of the time limit, the crane has a large load capacity, so the demand prediction in the determination logic (ie, step ST305) exceeds the target demand value D1, There is a problem that a load with a large load capacity cannot be input at the beginning of the time period. However, as described above, if the load is allowed to be arbitrarily input at the normal time (for example, 0 minutes to 27 minutes of the demand time period) The problem can be solved. Further, as described above, the possibility of exceeding the contract demand is reduced at the end of the time limit.

また、前述のこの発明の実施の形態１は、デマンド時限（例えば３０分）におけるデマンド電力量（換言すればデマンド被監視量）を超えないように監視制御するものであり、デマンド時限終了前の所定時間内を負荷の任意投入（換言すれば任意使用）を禁止する時間帯とするものであるが、更に、優先順位の低い負荷が無い場合(ステップST308参照)や優先順位の低い負荷を遮断しても（換言すれば落しても）目標デマンドを超える場合(ステップST310参照)は、時限終了時まで投入（換言すれば使用）を行わず(ステップST312参照)、前記投入・遮断信号発生手段１０（図１参照）により、時限終了時に投入要求のあった負荷の投入を行う(ステップST313参照)ので、負荷の投入遮断を行う作業者は現在の負荷状況および現在までの電力量（換言すれば被監視量）の使用量を意識することなく、負荷（換言すれば被監視量）を投入（換言すれば使用）することができ、しかも契約デマンド等の目標デマンドに納めることができる。 Further, the above-described first embodiment of the present invention performs monitoring control so as not to exceed the demand power amount (in other words, the demand monitored amount) in the demand time period (for example, 30 minutes), and before the demand time period ends. Although the predetermined time is a time zone in which arbitrary loading of loads (in other words, arbitrary use) is prohibited, further, when there is no load with low priority (see step ST308) or when load with low priority is cut off Even if (in other words, drop), if the target demand is exceeded (see step ST310), the above-mentioned on / off signal generation means is not performed (in other words, used) until the end of the time limit (see step ST312). 10 (see FIG. 1), the load requested to be turned on at the end of the time limit is turned on (see step ST313), so that the operator who cuts off the load turns on the current load status and the amount of power up to now (in other words, If The load (in other words, the monitored amount) can be input (in other words, used) without being aware of the usage amount of the monitored amount), and can be accommodated in the target demand such as the contract demand.

また、前述のこの発明の実施の形態１は、負荷投入遮断のスケジューリングを行うものではなく、負荷投入遮断のリアルタイムな監視制御装置であり、それが故に、デマンド時限終了前の所定時間内を負荷の任意投入（換言すれば任意使用）を禁止する時間帯とするものである。 The above-described first embodiment of the present invention does not perform scheduling of load input cutoff, but is a real-time monitoring and control apparatus for load input cutoff. Therefore, the load is interrupted within a predetermined time before the end of the demand time limit. This is a time zone in which arbitrary input (in other words, optional use) is prohibited.

また、前述のこの発明の実施の形態１においては、前記ステップST302において、表示灯が点灯しているので、例えば、負荷の電源スイッチの投入後、直に負荷が起動しない場合にも、負荷の投入遮断を行う作業者は、表示灯の点灯を確認することにより、直に負荷が起動しない原因が、デマンド時限終了前の所定時間内を負荷の任意投入（即ち、任意使用）を禁止する時間帯の最中であることを知ることができ、さらに、所定の時間（例えば最大３分）経過後に当該負荷が起動する（即ち使用状態となる）ことを知ることができる。 In Embodiment 1 of the present invention described above, since the indicator lamp is lit in step ST302, for example, even if the load does not start immediately after the power switch of the load is turned on, The operator who shuts off the load confirms the lighting of the indicator light, and the reason why the load does not start immediately is the time during which the load is not turned on (ie, used arbitrarily) within the predetermined time before the end of the demand time limit. It is possible to know that the belt is in the middle of the band, and it is possible to know that the load is activated (that is, is in use) after a predetermined time (for example, a maximum of 3 minutes) has elapsed.

また、前述のこの発明の実施の形態１の要点を整理すると、前述のように、所定の時限（即ち、デマンド時限（例えば３０分））における電力、ガス、水などの使用量の総和を目標のデマンド値D1以下となるように監視制御するデマンド監視制御装置において、前記時間経過演算手段３によって計算された経過時間が、前記設定値記憶手段５に記憶されている負荷の任意投入禁止時間（換言すれば任意使用禁止時間）に入っているとき（即ち、例えば図４においてデマンド時限３０分の内の２７分〜３０分の時間帯に入っているとき）、前記投入信号監視手段７によって負荷の投入要求（換言すれば使用要求）を確認した場合、前記予測デマンド演算手段４による計算結果と投入要求（換言すれば使用要求）のあった負荷の記憶されている負荷容量（換言すれば使用要求のあった被監視量の容量）により、前記仮予測デマンド演算手段８１によって投入要求（換言すれば使用要求）のあった負荷（換言すれば被監視量）を投入（換言すれば使用）した場合のデマンド時限終了時の予測デマンド値を演算し、上記目標デマンド値D1を超えない場合、前記投入・遮断信号発生手段１０により投入要求（換言すれば使用要求）のあった負荷（換言すれば被監視量）を投入（換言すれば使用）させるものである。 Further, when the main points of the first embodiment of the present invention described above are arranged, as described above, the target is the sum of the usage amounts of power, gas, water, etc. in a predetermined time period (that is, demand time period (for example, 30 minutes)). In the demand monitoring control apparatus that monitors and controls the demand value D1 or less, the elapsed time calculated by the time lapse calculating means 3 is an arbitrary load prohibition time (stored in the set value storage means 5) ( In other words, when the optional use prohibition time is entered (that is, when, for example, the demand time period is within the time period of 27 minutes to 30 minutes within 30 minutes), the input signal monitoring means 7 loads the load. When the input request (in other words, use request) is confirmed, the calculation result by the predicted demand calculating means 4 and the negative load in which the input request (in other words, use request) is stored are stored. Based on the capacity (in other words, the capacity of the monitored amount requested to be used), the temporary predicted demand calculating means 81 inputs the load (in other words, the monitored amount) requested to be input (in other words, the usage request) ( In other words, the predicted demand value at the end of the demand time period is calculated, and when the target demand value D1 is not exceeded, there is a request for input (in other words, a request for use) by the input / shutoff signal generating means 10. Load (in other words, the monitored amount) is input (in other words, used).

また、前述のこの発明の実施の形態１の要点を整理すると、前述のように、前記時間経過演算手段３によって計算された経過時間が、前記設定値記憶手段５に記憶されている負荷の任意投入禁止時間（換言すれば任意使用禁止時間）に入っていないとき（即ち、例えば図４においてデマンド時限３０分の内の０分〜２７分の時間帯内にあるとき）、前記投入信号監視手段７によって負荷の投入要求（換言すれば使用要求）を確認した場合、前記デマンド時限終了時の予測デマンド値と前記目標デマンド値D１を比較することなく、前記投入・遮断信号発生手段１０は当該負荷（換言すれば被監視量）を投入（換言すれば使用）させるものである。 Further, when the main points of the first embodiment of the present invention are summarized, as described above, the elapsed time calculated by the time elapsed calculation means 3 is an arbitrary load stored in the set value storage means 5. When the input prohibition time (in other words, the optional use prohibition time) has not been entered (that is, for example, within the time period of 0 to 27 minutes within the 30-minute demand period in FIG. 4), the input signal monitoring means 7, when the load input request (in other words, the use request) is confirmed, the input / cut-off signal generating means 10 does not compare the predicted demand value at the end of the demand time period with the target demand value D 1. (In other words, the monitored amount) is input (in other words, used).

また、前述のこの発明の実施の形態１の要点を整理すると、前述のように、前記時間経過演算手段３によって計算された経過時間が、前記設定値記憶手段５に記憶されている負荷の任意投入禁止時間（換言すれば任意使用禁止時間）に入っているとき（即ち、例えば図４においてデマンド時限３０分の内の２７分〜３０分の時間帯に入っているとき）、前記投入信号監視手段７によって負荷の投入要求（換言すれば使用要求）を確認した場合、前記予測デマンド演算手段４による計算結果と投入要求（換言すれば使用要求）のあった負荷の記憶されている負荷容量（換言すれば使用要求のあった被監視量の容量）により、前記仮予測デマンド演算手段８１によって投入要求（換言すれば使用要求）のあった負荷（換言すれば被監視量）を投入（換言すれば使用）した場合のデマンド時限終了時の予測デマンド値を演算し、記憶されている目標デマンド値D1を超える場合、前記設定値記憶手段５に記憶されている制御負荷から前記投入負荷順位比較手段９により、現在遮断していない負荷（換言すれば使用されている負荷）との優先順位の比較を行い、投入要求（換言すれば使用要求）のあった負荷（換言すれば被監視量）よりも優先順位の低い負荷（換言すれば被監視量）が遮断されていない場合（換言すれば使用されている場合）、前記仮予測デマンド演算手段８１によって優先順位の低い負荷（換言すれば被監視量）を遮断し（換言すれば落し）、かつ投入要求（換言すれば使用要求）のあった負荷（換言すれば被監視量）を投入（換言すれば使用）した場合のデマンド時限終了時の予測デマンド値を演算し、記憶されている目標デマンド値D1を超えない場合、投入・遮断信号発生手段(34)により、まず優先順位の低い負荷（換言すれば被監視量）を遮断し（換言すれば落し）、その後投入要求（換言すれば使用要求）のあった負荷（換言すれば被監視量）の投入を行うものである。更に、投入要求（換言すれば使用要求）のあった負荷（換言すれば被監視量）の投入（換言すれば使用）を行えないと判断した場合は、時限終了時まで投入（換言すれば使用）を行わず、前記投入・遮断信号発生手段１０により、時限終了時に投入要求（換言すれば使用要求）のあった負荷（換言すれば被監視量）を投入（換言すれば使用）させるものである。 Further, when the main points of the first embodiment of the present invention are summarized, as described above, the elapsed time calculated by the time elapsed calculation means 3 is an arbitrary load stored in the set value storage means 5. When the input prohibition time (in other words, the optional use prohibition time) has been entered (that is, when, for example, within the time period of 27 minutes to 30 minutes within the demand time limit of 30 minutes in FIG. 4), the input signal is monitored. When the load input request (in other words, a use request) is confirmed by the means 7, the calculation result by the predicted demand calculation means 4 and the load capacity (in other words, the load capacity) in which the load having the input request (in other words, the use request) is stored ( In other words, according to the capacity of the monitored amount requested to be used), the provisional demand demand calculation means 81 inputs the load (in other words, the monitored amount) requested to input (in other words, the usage request). In other words, when the predicted demand value at the end of the demand time limit is calculated and exceeds the stored target demand value D1, the input load ranking is calculated from the control load stored in the set value storage means 5 The comparison means 9 compares the priority with the load that is not currently cut off (in other words, the load that is being used), and the load (in other words, the amount to be monitored) that has been requested (in other words, the use request). ), A load with a lower priority (in other words, a monitored amount) is not blocked (in other words, used), the temporary predicted demand calculating means 81 uses a load with a lower priority (in other words, a monitored amount). Demand time end when the load (in other words, the monitored amount) that requested the input (in other words, the usage request) was turned on (in other words, the monitored amount) was shut down (in other words, dropped) When the predicted demand value at the time is calculated and the stored target demand value D1 is not exceeded, the load with low priority (in other words, the monitored amount) is shut off first by the on / off signal generation means (34). (In other words, drop), and then the load (in other words, the monitored amount) for which the input request (in other words, use request) has been made is input. Further, if it is determined that the load (in other words, the monitored amount) requested to be input (in other words, the amount to be monitored) cannot be input (in other words, used), the input (in other words, use) ) And the load / blocking signal generating means 10 inputs (in other words, uses) the load (in other words, the monitored amount) that has been requested (in other words, a use request) at the end of the time limit. is there.

また、前述のこの発明の実施の形態１の要点を整理すると、前述のように、前記設定値記憶手段５に記憶されている任意投入禁止時間（換言すれば任意使用禁止時間）を、前記時間経過演算手段３によって計算された経過時間が超えている場合、前記任意投入禁止信号発生手段６によってランプ点灯等の任意投入禁止警報を発生するものである。 Further, when the main points of the first embodiment of the present invention described above are summarized, as described above, the arbitrary insertion prohibition time (in other words, the arbitrary use prohibition time) stored in the set value storage means 5 is set as the time. When the elapsed time calculated by the progress calculation means 3 is exceeded, the optional input prohibition signal generation means 6 generates an arbitrary input prohibition alarm such as lamp lighting.

また、前述のこの発明の実施の形態１の要点を更に上位概念で整理すると、前述のように、デマンド時限開始からデマンド時限終了までの被監視量の総和が目標デマンド値以下となるように前記被監視量を監視制御するデマンド監視制御方式において、デマンド時限終了前の所定時間内における前記被監視量の使用要求有無の確認を行い、当該使用要求があった場合、当該使用要求による被監視量の使用量を含めて前記デマンド時限終了時の前記デマンド時限開始からデマンド時限終了までの被監視量の総和を予測し、当該使用要求による被監視量の使用量を含めて予測した前記デマンド時限開始からデマンド時限終了までの被監視量の予測総和量が前記目標デマンド値の内外の何れであるか判別し、前記予測総和量が前記目標デマンド値以内であれば、前記被監視量の使用要求を許可し、前記予測総和量が前記目標デマンド値外であれば、前記被監視量の使用要求を拒否するものである。 Further, when the main points of the first embodiment of the present invention described above are further arranged in a general concept, as described above, the total amount of monitored amounts from the start of the demand time period to the end of the demand time period is reduced to the target demand value or less. In the demand monitoring control method for monitoring and controlling the monitored amount, the use of the monitored amount is confirmed within a predetermined time before the end of the demand time limit, and if there is a usage request, the monitored amount by the usage request Predicts the sum of the monitored amounts from the start of the demand time period to the end of the demand time period, including the usage amount, and starts the demand time period predicted including the usage amount of the monitored amount according to the usage request To determine whether the predicted total amount of the monitored amount from the end of the demand time limit is inside or outside the target demand value, and the predicted total amount is less than or equal to the target demand value. If the permit request for using the monitored amount, if the predicted total amount is out of the target demand value, the is to deny the request for using the monitored quantity.

また、前述のこの発明の実施の形態１の要点を更に上位概念で整理すると、前述のように、デマンド時限開始からデマンド時限終了までの被監視量の総和が目標デマンド値以下となるように前記被監視量を監視制御するデマンド監視制御方式において、デマンド時限終了前の所定時間内における前記被監視量の使用要求有無の確認を行い、当該使用要求があった場合、当該使用要求による被監視量の使用量を含めて前記デマンド時限終了時の前記デマンド時限開始からデマンド時限終了までの被監視量の総和を予測し、当該使用要求による被監視量の使用量を含めて予測した前記デマンド時限開始からデマンド時限終了までの被監視量の予測総和量が前記目標デマンド値の内外の何れであるか判別し、前記予測総和量が前記目標デマンド値外であれば、前記使用要求のあった被監視量より優先順位の低い使用中の被監視量を、前記使用要求による被監視量の使用量を含めて予測した前記デマンド時限開始からデマンド時限終了までの被監視量の予測総和量が前記目標デマンド値以内になるまで落して、前記被監視量の使用要求を許可するものである。 Further, when the main points of the first embodiment of the present invention described above are further arranged in a general concept, as described above, the total amount of monitored amounts from the start of the demand time period to the end of the demand time period is reduced to the target demand value or less. In the demand monitoring control method for monitoring and controlling the monitored amount, the use of the monitored amount is confirmed within a predetermined time before the end of the demand time limit, and if there is a usage request, the monitored amount by the usage request Predicts the sum of the monitored amounts from the start of the demand time period to the end of the demand time period, including the usage amount, and starts the demand time period predicted including the usage amount of the monitored amount according to the usage request To determine whether the predicted total amount of the monitored amount from the end of the demand time period is inside or outside the target demand value, and the predicted total amount is outside the target demand value If there is, the monitored amount in use having a lower priority than the monitored amount requested to be used is predicted from the start of the demand time period to the end of the demand time period predicted including the usage amount of the monitored amount according to the use request. The predicted total amount of the monitored amount is lowered until it falls within the target demand value, and the use request of the monitored amount is permitted.

また、前述のこの発明の実施の形態１の要点を更に上位概念で整理すると、前述のように、デマンド時限開始からデマンド時限終了までの被監視量の総和が目標デマンド値以下となるように前記被監視量を監視制御するデマンド監視制御方式において、デマンド時限終了前の所定時間内における前記被監視量の使用要求有無の確認を行い、当該使用要求があった場合、当該使用要求による被監視量の使用量を含めて前記デマンド時限終了時の前記デマンド時限開始からデマンド時限終了までの被監視量の総和を予測し、当該使用要求による被監視量の使用量を含めて予測した前記デマンド時限開始からデマンド時限終了までの被監視量の予測総和量が前記目標デマンド値の内外の何れであるか判別し、前記予測総和量が前記目標デマンド値以内であれば、前記被監視量の使用要求を、当該使用要求のあった被監視量が前記デマンド時限終了前に使用されるように許可し、前記予測総和量が前記目標デマンド値外であれば、前記被監視量の使用要求を、当該使用要求のあった被監視量が前記デマンド時限以後に使用されるように許可するものである。更に、前記デマンド監視制御方式は、前記デマンド時限終了前の所定時間より前の時間帯では、前記被監視量の使用要求を許可するものである。 Further, when the main points of the first embodiment of the present invention described above are further arranged in a general concept, as described above, the total amount of monitored amounts from the start of the demand time period to the end of the demand time period is reduced to the target demand value or less. In the demand monitoring control method for monitoring and controlling the monitored amount, the use of the monitored amount is confirmed within a predetermined time before the end of the demand time limit, and if there is a usage request, the monitored amount by the usage request Predicts the sum of the monitored amounts from the start of the demand time period to the end of the demand time period, including the usage amount, and starts the demand time period predicted including the usage amount of the monitored amount according to the usage request To determine whether the predicted total amount of the monitored amount from the end of the demand time limit is inside or outside the target demand value, and the predicted total amount is less than or equal to the target demand value. If so, the usage request for the monitored amount is permitted so that the monitored amount for which the usage request has been made is used before the end of the demand time period, and if the predicted total amount is outside the target demand value The use request for the monitored amount is permitted so that the monitored amount for which the use request has been made is used after the demand time limit. Furthermore, the demand monitoring control system permits use of the monitored amount in a time zone before a predetermined time before the end of the demand time period.

また、前述のこの発明の実施の形態１の要点を更に上位概念で整理すると、前述のように、前記デマンド監視制御方式は、前記デマンド時限の開始後、前記デマンド時限終了前の所定時間に至った場合、その旨を知らせる警報を発生するものである。 Further, when the main points of the first embodiment of the present invention described above are further arranged in a general concept, as described above, the demand monitoring control system reaches a predetermined time after the start of the demand time period and before the end of the demand time period. In the event of a failure, a warning is given to that effect.

また、前述のこの発明の実施の形態１の要点を更に上位概念で整理すると、前述のように、デマンド時限開始からデマンド時限終了までの被監視量の総和が目標デマンド値以下となるように前記被監視量を監視制御するデマンド監視制御装置において、デマンド時限終了前の所定時間内における前記被監視量の使用要求有無を確認し、当該使用要求があった場合、当該使用要求による被監視量の使用量を含めて前記デマンド時限終了時の前記デマンド時限開始からデマンド時限終了までの被監視量の総和を予測し、当該使用要求による被監視量の使用量を含めて予測した前記デマンド時限開始からデマンド時限終了までの被監視量の予測総和量が前記目標デマンド値の内外の何れであるか判別し、前記予測総和量が前記目標デマンド値以内であれば、前記被監視量の使用要求を許可し、前記予測総和量が前記目標デマンド値外であれば、前記被監視量の使用要求を拒否する機能を有しているものである。 Further, when the main points of the first embodiment of the present invention described above are further arranged in a general concept, as described above, the total amount of monitored amounts from the start of the demand time period to the end of the demand time period is reduced to the target demand value or less. In the demand monitoring control device that monitors and controls the monitored amount, the presence or absence of a request for use of the monitored amount within a predetermined time before the end of the demand time limit is confirmed. Predicting the sum of the monitored amounts from the start of the demand time period to the end of the demand time period including the usage amount, from the start of the demand time period predicted including the usage amount of the monitored amount according to the usage request It is determined whether the predicted total amount of the monitored amount until the end of the demand time period is inside or outside the target demand value, and the predicted total amount is within the target demand value. Lever, wherein allow the use request of the monitored amount, if the predicted total amount outside the target demand value, the one in which has the function to deny use request of the monitored quantity.

また、前述のこの発明の実施の形態１の要点を更に上位概念で整理すると、前述のように、デマンド時限開始からデマンド時限終了までの被監視量の総和が目標デマンド値以下となるように前記被監視量を監視制御するデマンド監視制御装置において、デマンド時限終了前の所定時間内における前記被監視量の使用要求有無を確認し、当該使用要求があった場合、当該使用要求による被監視量の使用量を含めて前記デマンド時限終了時の前記デマンド時限開始からデマンド時限終了までの被監視量の総和を予測し、当該使用要求による被監視量の使用量を含めて予測した前記デマンド時限開始からデマンド時限終了までの被監視量の予測総和量が前記目標デマンド値の内外の何れであるか判別し、前記予測総和量が前記目標デマンド値外であれば、前記使用要求のあった被監視量より優先順位の低い使用中の被監視量を、前記使用要求による被監視量の使用量を含めて予測した前記デマンド時限開始からデマンド時限終了までの被監視量の予測総和量が前記目標デマンド値以内になるまで落して、前記被監視量の使用要求を許可する機能を有しているものである。 Further, when the main points of the first embodiment of the present invention described above are further arranged in a general concept, as described above, the total amount of monitored amounts from the start of the demand time period to the end of the demand time period is reduced to the target demand value or less. In the demand monitoring control device that monitors and controls the monitored amount, the presence or absence of a request for use of the monitored amount within a predetermined time before the end of the demand time limit is confirmed. Predicting the sum of the monitored amounts from the start of the demand time period to the end of the demand time period including the usage amount, from the start of the demand time period predicted including the usage amount of the monitored amount according to the usage request It is determined whether the predicted total amount of the monitored amount until the end of the demand time limit is inside or outside the target demand value, and the predicted total amount is outside the target demand value For example, the monitored amount in use having a lower priority than the monitored amount requested to be used is predicted from the start of the demand time period to the end of the demand time period predicted including the usage amount of the monitored amount according to the use request. The monitoring amount is reduced until the predicted total amount falls within the target demand value, and has a function of permitting use of the monitored amount.

また、前述のこの発明の実施の形態１の要点を更に上位概念で整理すると、前述のように、デマンド時限開始からデマンド時限終了までの被監視量の総和が目標デマンド値以下となるように前記被監視量を監視制御するデマンド監視制御装置において、デマンド時限終了前の所定時間内における前記被監視量の使用要求有無を確認し、当該使用要求があった場合、当該使用要求による被監視量の使用量を含めて前記デマンド時限終了時の前記デマンド時限開始からデマンド時限終了までの被監視量の総和を予測し、当該使用要求による被監視量の使用量を含めて予測した前記デマンド時限開始からデマンド時限終了までの被監視量の予測総和量が前記目標デマンド値の内外の何れであるか判別し、前記予測総和量が前記目標デマンド値以内であれば、前記被監視量の使用要求を、当該使用要求のあった被監視量が前記デマンド時限終了前に使用されるように許可し、前記予測総和量が前記目標デマンド値外であれば、前記被監視量の使用要求を、当該使用要求のあった被監視量が前記デマンド時限以後に使用されるように許可する機能を有しているものである。更に、前記デマンド監視制御装置は、前記デマンド時限終了前の所定時間より前の時間帯では、前記被監視量の使用要求を許可する機能を有しているものである。
ことを特徴とするデマンド監視制御装置。 Further, when the main points of the first embodiment of the present invention described above are further arranged in a general concept, as described above, the total amount of monitored amounts from the start of the demand time period to the end of the demand time period is reduced to the target demand value or less. In the demand monitoring control device that monitors and controls the monitored amount, the presence or absence of a request for use of the monitored amount within a predetermined time before the end of the demand time limit is confirmed. Predicting the sum of the monitored amount from the start of the demand time period to the end of the demand time period including the usage amount, from the start of the demand time period predicted including the usage amount of the monitored amount according to the usage request It is determined whether the predicted total amount of the monitored amount until the end of the demand time period is inside or outside the target demand value, and the predicted total amount is within the target demand value. The monitored amount usage request is permitted so that the monitored amount for which the usage request has been made is used before the end of the demand time limit, and if the predicted total amount is outside the target demand value, It has a function of permitting the use request of the monitored amount so that the monitored amount for which the use request has been made is used after the demand time limit. Further, the demand monitoring control device has a function of permitting a request for using the monitored amount in a time zone before a predetermined time before the end of the demand time period.
A demand monitoring control device characterized by that.

また、前述のこの発明の実施の形態１の要点を更に上位概念で整理すると、前述のように、前記デマンド監視制御装置は、前記デマンド時限の開始後、前記デマンド時限終了前の所定時間に至った場合、その旨を知らせる警報を発生する機能を有しているものである。 Further, when the main points of the first embodiment of the present invention described above are further arranged in a general concept, as described above, the demand monitoring and control apparatus reaches a predetermined time after the start of the demand time period and before the end of the demand time period. If there is a problem, it has a function to generate an alarm to that effect.

なお、前述のこの発明の実施の形態１においては、前記任意投入禁止時間は３分間として例示したが、デマンド制御監視装置に接続される負荷の種類に応じて０分（０分も含む）から３０分（３０分は含まない）の間で適宜選択すればよい。 In the first embodiment of the present invention described above, the optional entry prohibition time is exemplified as 3 minutes, but from 0 minutes (including 0 minutes) depending on the type of load connected to the demand control monitoring device. What is necessary is just to select suitably between 30 minutes (30 minutes is not included).

なお、前述の図１に示す各手段１〜１０は、ハ−ドウエア的に表示してあるが、ソフトウエアで実現しても同様な機能を呈する。 Each of the means 1 to 10 shown in FIG. 1 described above is displayed in hardware, but exhibits the same function even if implemented by software.

実施の形態２
この発明の実施の形態２は、前記デマンド時限の終了前の所定時間に至った場合、前記目標デマンド値を下げる機能と、この下げた目標デマンド値を超えそうな負荷投入は禁止し超えそうでない負荷投入は禁止しない機能とを持たせることにより、デマンド時限内において負荷を有効に使うことができるようにしたものであり、その概略構成図は前述の図１と同じであるので、図示を省略してある。 Embodiment 2
In the second embodiment of the present invention, when a predetermined time before the end of the demand time limit is reached, the target demand value is lowered, and a load input that is likely to exceed the lowered target demand value is prohibited and is not likely to be exceeded. By providing a function that does not prohibit the loading of the load, the load can be used effectively within the demand period, and the schematic configuration diagram thereof is the same as FIG. It is.

以下、この発明の実施の形態２のデマンド監視制御方式及び装置の動作について、図５により、図１および図６を参照しながら、２つ事例（第１の事例、及び第２の事例）について説明する。なお、図５は任意投入禁止時間帯の動作フローを示す図、図６はデマンドの推移グラフを示す図である。 Hereinafter, with reference to FIG. 1 and FIG. 6, two cases (first case and second case) will be described with reference to FIGS. explain. FIG. 5 is a diagram showing an operation flow in an arbitrary insertion prohibition time zone, and FIG. 6 is a diagram showing a demand transition graph.

「第１の事例」
電力、水、ガス等の被監視量の供給元との契約によるデマンド時限を３０分間とし、デマンド監視制御装置の記憶装置（デマンド監視制御装置にはデマンド監視制御を行う為に記憶装置やＣＰＵが設けられていることは従来周知であるので図示省略してある）に記憶されている負荷の任意投入禁止の時間時間を仮に前記デマンド時限終了前の３分間（デマンド時限終了前の所定時間）とすると、時間経過演算手段３（図１参照）によって計算された経過時間が３０分−３分で２７分を経過した場合（図５のステップST601）、その後は、目標デマンド値を、１０秒毎に、前記契約による目標デマンド値を１％づつ下げた値とし（ステップST602）、計算した予測デマンドが前記下げた目標デマンド値を下回っている場合は、負荷投入の禁止信号を発生させず（ステップST603）、計算した予測デマンドが前記下げた目標デマンド値を上回っている場合は負荷投入の禁止信号の出力を行う（ステップST604）。 “First Case”
The demand time limit according to the contract with the supplier of the monitored amount of power, water, gas, etc. is 30 minutes, and the storage device of the demand monitoring control device (the demand monitoring control device has a storage device and a CPU for performing demand monitoring control). It is well known in the art and is not shown in the figure), and the time for prohibiting the arbitrary loading of the load stored is assumed to be 3 minutes before the end of the demand time period (predetermined time before the end of the demand time period) Then, when the elapsed time calculated by the time lapse calculating means 3 (see FIG. 1) is 30 minutes-3 minutes and 27 minutes have passed (step ST601 in FIG. 5), thereafter, the target demand value is changed every 10 seconds. In addition, the target demand value according to the contract is reduced by 1% (step ST602). If the calculated predicted demand is lower than the reduced target demand value, a load prohibition signal is issued. If it is not generated (step ST603) and the calculated predicted demand exceeds the reduced target demand value, a load prohibition signal is output (step ST604).

なお、前記ステップST602において、目標デマンド値を、１０秒毎に、前記契約による目標デマンド値を１％づつ下げる演算は、前記ＣＰＵ（図示省略）により行う。 In step ST602, the CPU (not shown) calculates the target demand value to decrease the target demand value by the contract by 1% every 10 seconds.

一般的に、負荷は常に一定の使用量ではなく、例えば、基本的には通常３０％運転される負荷であっても当該負荷の運用部署の状況に応じて２５％運転や３５％運転とする場合があったり、通常１００％運転の負荷であっても当該負荷の運用部署におけるエネルギ−費用制限の観点等から９０％運転する場合があり、負荷遮断や負荷投入による被監視量の使用量の増減の予測は、実際値と完全に一致させることはできず若干の誤差が生じるため、負荷制御は、前記契約デマンド値を超えることがないように、少な目の負荷となるように制御せざるを得ない。 In general, the load is not always a constant usage amount. For example, even if the load is normally operated at 30%, the operation is 25% or 35% depending on the status of the operation department of the load. In some cases, even if the load is normally 100%, there is a case where the load is operated 90% from the viewpoint of energy cost limitation in the operation department of the load. Since the increase / decrease prediction cannot be completely matched with the actual value and a slight error occurs, the load control must be controlled so as to be a small load so as not to exceed the contract demand value. I don't get it.

ところが、前述の第１の事例のように、デマンド時限終了前の所定時間において、目標デマンド値を下げることにより、負荷の実際値が負荷の予測値を若干上回って当該下げた目標デマンド値を若干超えても前記契約した目標デマンド値を超える可能性が低くなり、従前は投入できなかった負荷を投入することが可能となり、負荷を有効に使うことができるようになる。 However, as in the first case described above, by reducing the target demand value for a predetermined time before the end of the demand time period, the actual load value slightly exceeds the predicted load value, and the reduced target demand value is slightly Even if it exceeds, the possibility of exceeding the contracted target demand value becomes low, it becomes possible to input a load that could not be input before, and the load can be used effectively.

なお、前述の第１の事例において、目標デマンド値を下げる量を、時間の経過に伴って、時間の経過と反比例的に大きくするのは、前記デマンド時限の終了に近づく程、正確な負荷制御の時間的余裕が少なくなる（負荷の遮断や投入時点の遅れ、負荷自体の制御遅れ等が起因する）ので、前記契約による目標デマンド値を超える可能性が上がらないようにするためである。 Note that in the first case described above, the amount by which the target demand value is decreased is increased in inverse proportion to the passage of time as the time passes. This is to prevent the possibility of exceeding the target demand value according to the contract because the time margin is reduced (due to load interruption, delay at the time of input, control delay of the load itself, etc.).

「第２の事例」
前述の第１の事例においては、負荷の任意投入禁止期間（デマンド時限開始から２７分経過後）において１０秒毎に目標デマンド値を１％づつ下げる例について説明したが、以下のように時間経過に伴って、段階的に目標デマンド値を下げるようにしても同様の効果が得られる。 "Second case"
In the first case described above, the example in which the target demand value is decreased by 1% every 10 seconds during the optional load prohibition period (27 minutes after the start of the demand time limit) has been described. Accordingly, the same effect can be obtained even if the target demand value is lowered step by step.

即ち、電力、水、ガス等の被監視量の供給元との契約によるデマンド時限を３０分間とし、デマンド監視制御装置の記憶装置（デマンド監視制御装置にはデマンド監視制御を行う為に記憶装置やＣＰＵが設けられていることは従来周知であるので図示省略してある）に記憶されている負荷の任意投入禁止の時間時間を仮に前記デマンド時限終了前の３分間（デマンド時限終了前の所定時間）とすると、時間経過演算手段３（図１参照）によって計算された経過時間が３０分−３分で２７分を経過した場合、その後２分間（経過時間２７分〜２９分）は、目標デマンド値を前記契約による目標デマンド値の９５％とし、さらに最後の１分間（経過時間２９分〜３０分）は、目標デマンド値を前記契約による目標デマンド値の９０％とし、計算した予測デマンドが、前記各経過時間（経過時間２７分〜２９分、経過時間２９分〜３０分）において、前記各経過時間に対応する前記下げた目標値（９５％、９０％）を下回っている場合は、負荷投入の禁止信号を発生させず、上回っている場合は負荷投入の禁止信号の出力を行う。 That is, the demand time limit according to the contract with the supplier of the monitored amount of power, water, gas, etc. is 30 minutes, and the storage device of the demand monitoring control device (the demand monitoring control device includes a storage device or It is well known in the art that the CPU is provided, and is not shown in the figure). The time for prohibiting the arbitrary loading of the load is assumed to be 3 minutes before the end of the demand time period (a predetermined time before the end of the demand time period) ), When the elapsed time calculated by the time lapse calculation means 3 (see FIG. 1) is 30 minutes to 3 minutes and 27 minutes have elapsed, the subsequent 2 minutes (elapsed time 27 to 29 minutes) The value is set to 95% of the target demand value according to the contract, and for the last one minute (elapsed time 29 to 30 minutes), the target demand value is set to 90% of the target demand value according to the contract. The predicted demand is below the lowered target value (95%, 90%) corresponding to each elapsed time in each elapsed time (elapsed time 27 minutes to 29 minutes, elapsed time 29 minutes to 30 minutes). In this case, the load input prohibition signal is not generated, and if it exceeds, the load input prohibition signal is output.

なお、前記９５％目標デマンド値、９０％目標デマンド値は、前記記憶装置（図示省略）に格納し、対応する前記経過時間（経過時間２７分〜２９分、経過時間２９分〜３０分）毎に読み出して、前述の動作を行うようにする。 Note that the 95% target demand value and the 90% target demand value are stored in the storage device (not shown), and each corresponding elapsed time (elapsed time 27 to 29 minutes, elapsed time 29 to 30 minutes) is stored. And the above-described operation is performed.

また、前述の第１の事例及び第２の事例では、目標デマンド値を下げる方式の事例として、複数段下げる場合の事例を例示したが、目標デマンド値を下げる方式は、必要に応じて、１段だけ下げる方式、連続的に下げる方式、１次あるいは複次の関数発生器（Ｓ／Ｗを含む）を使って下げる方式、一旦下げてその後若干上げる方式、等を採用しても前述と同等の効果を奏する。 Further, in the first case and the second case described above, the case of lowering the target demand value by way of example is exemplified as the case of the method of lowering the target demand value. Even if a lowering method, a continuous lowering method, a lowering method using a first-order or multiple-order function generator (including S / W), a lowering method and a slightly raising method are used, the same as described above. The effect of.

前述のこの発明の実施の形態１および実施の形態２では、電力系統における使用電力量のデマンド監視制御を事例として具体的に説明したが、水やガスの監視制御の分野においても、デマンド監視制御する場合には適用でき、前述のこの発明の実施の形態１および実施の形態２と同等の機能、効果を期待できる。 In the first embodiment and the second embodiment of the present invention described above, demand monitoring control of the amount of power used in the power system has been specifically described as an example. However, demand monitoring control is also used in the field of water and gas monitoring control. In this case, it can be applied, and functions and effects equivalent to those of the first and second embodiments of the present invention can be expected.

この発明の実施の形態１の構成図である。It is a block diagram of Embodiment 1 of this invention. この発明の実施の形態１における定常時の動作フローを示す図である。It is a figure which shows the operation | movement flow at the time of steady state in Embodiment 1 of this invention. この発明の実施の形態１における任意投入禁止時間帯の動作フローを示す図である。It is a figure which shows the operation | movement flow in the arbitrary insertion prohibition time slot | zone in Embodiment 1 of this invention. この発明の実施の形態１におけるデマンドの推移グラフを示す図である。It is a figure which shows the transition graph of the demand in Embodiment 1 of this invention. この発明の実施の形態２における任意投入禁止時間帯の動作フローを示す図である。It is a figure which shows the operation | movement flow of the arbitrary insertion prohibition time slot | zone in Embodiment 2 of this invention. この発明の実施の形態２におけるデマンドの推移グラフを示す図である。It is a figure which shows the transition graph of the demand in Embodiment 2 of this invention. 従来のデマンド監視制御装置のデマンドの推移グラフを示した図である。It is the figure which showed the transition graph of the demand of the conventional demand monitoring control apparatus.

Explanation of symbols

１時限信号発生手段、
２電力量測定手段、
３時間経過演算手段、
４予測デマンド演算手段、
５設定値記憶手段、
６任意投入禁止信号発生手段、
７投入信号監視手段、
８１仮想予測デマンド値演算手段、
８２投入・遮断制御演算手段、
８投入・遮断信号監視手段、
１０投入・遮断信号発生手段。 1 timed signal generation means,
2 Electric energy measurement means,
3 time elapsed calculation means,
4 predicted demand calculation means,
5 set value storage means,
6 Arbitrary input prohibition signal generating means,
7 Input signal monitoring means,
81 virtual prediction demand value calculation means,
82 Input / shutoff control calculation means,
8 On / off signal monitoring means,
10 Means for turning on / off signals.

Claims

In the demand monitoring control method for monitoring and controlling the monitored amount so that the sum of the monitored amounts from the start of the demand time period to the end of the demand time period is less than or equal to the target demand value,
Check whether there is a request for use of the monitored amount within a predetermined time before the end of the demand time limit, and if there is a request for use, the usage amount of the monitored amount according to the use request includes the amount of the monitored amount at the end of the demand time period. Predict the total monitored amount from the start of the demand time period to the end of the demand time period,
Determining whether the predicted total amount of the monitored amount from the start of the demand time period to the end of the demand time period predicted including the usage amount of the monitored amount according to the use request is inside or outside the target demand value;
If the predicted total amount is within the target demand value, permit use of the monitored amount,
If the predicted total amount is outside the target demand value, the demand monitoring control method is characterized in that a request for using the monitored amount is rejected.

In the demand monitoring control method for monitoring and controlling the monitored amount so that the sum of the monitored amounts from the start of the demand time period to the end of the demand time period is less than or equal to the target demand value,
Check whether there is a request for use of the monitored amount within a predetermined time before the end of the demand time limit, and if there is a request for use, the usage amount of the monitored amount according to the use request includes the amount of the monitored amount at the end of the demand time period. Predict the total monitored amount from the start of the demand time period to the end of the demand time period,
Determining whether the predicted total amount of the monitored amount from the start of the demand time period to the end of the demand time period predicted including the usage amount of the monitored amount according to the use request is inside or outside the target demand value;
If the predicted total amount is outside the target demand value, the monitored amount in use having a lower priority than the monitored amount requested to be used is predicted including the usage amount of the monitored amount due to the use request. The demand monitoring control system, wherein the predicted total amount of the monitored amount from the start of the demand time period to the end of the demand time period falls to be within the target demand value, and the use request of the monitored amount is permitted.

In the demand monitoring control method for monitoring and controlling the monitored amount so that the sum of the monitored amounts from the start of the demand time period to the end of the demand time period is less than or equal to the target demand value,
Check whether there is a request for use of the monitored amount within a predetermined time before the end of the demand time limit, and if there is a request for use, the usage amount of the monitored amount according to the use request includes the amount of the monitored amount at the end of the demand time period. Predict the total monitored amount from the start of the demand time period to the end of the demand time period,
Determining whether the predicted total amount of the monitored amount from the start of the demand time period to the end of the demand time period predicted including the usage amount of the monitored amount according to the use request is inside or outside the target demand value;
If the predicted total amount is within the target demand value, the usage request for the monitored amount is permitted so that the monitored amount for which the usage request has been made is used before the end of the demand time limit,
If the predicted total amount is outside the target demand value, the use request of the monitored amount is permitted so that the monitored amount for which the use request has been made is used after the demand time limit. Demand monitoring control method.

In the demand monitoring control system according to any one of claims 1 to 3,
The demand monitoring control method, wherein a request for using the monitored amount is permitted in a time period before a predetermined time before the end of the demand time period.

In the demand monitoring control system according to any one of claims 1 to 4,
A demand monitoring control system, wherein after a start of the demand time period, when a predetermined time before the end of the demand time period is reached, an alarm to notify that is generated.

In the demand monitoring control system according to any one of claims 1 to 5,
When the predetermined time before the end of the demand time limit is reached, the target demand value is lowered,
A demand monitoring control system characterized in that a load input that is likely to exceed the lowered target demand value is prohibited and a load input that is not likely to be exceeded is not prohibited.

In the demand monitoring control apparatus that monitors and controls the monitored amount so that the sum of the monitored amounts from the start of the demand time period to the end of the demand time period is equal to or less than the target demand value,
Check whether there is a usage request for the monitored amount within a predetermined time before the end of the demand time limit, and if there is a usage request, the demand at the end of the demand time period including the usage amount of the monitored amount by the usage request. Predict the sum of the monitored amount from the start of the time period to the end of the demand time period, and the predicted total amount of the monitored amount from the start of the demand time period to the end of the demand time period predicted including the usage amount of the monitored amount according to the use request is It is determined whether the target demand value is inside or outside, and if the predicted total amount is within the target demand value, the use request of the monitored amount is permitted, and the predicted total amount is outside the target demand value. A demand monitoring control device having a function of rejecting a request for use of the monitored amount, if any.

In the demand monitoring control apparatus that monitors and controls the monitored amount so that the sum of the monitored amounts from the start of the demand time period to the end of the demand time period is equal to or less than the target demand value,
Check whether there is a usage request for the monitored amount within a predetermined time before the end of the demand time limit, and if there is a usage request, the demand at the end of the demand time period including the usage amount of the monitored amount by the usage request. Predict the sum of the monitored amount from the start of the time period to the end of the demand time period, and the predicted total amount of the monitored amount from the start of the demand time period to the end of the demand time period predicted including the usage amount of the monitored amount according to the use request is It is determined whether the target demand value is inside or outside, and if the predicted total amount is outside the target demand value, the monitored amount in use having a lower priority than the monitored amount requested to be used, The predicted total amount of the monitored amount from the start of the demand time period to the end of the demand time period predicted including the usage amount of the monitored amount according to the use request is lowered until the predicted total amount is within the target demand value. , Demand monitor control apparatus characterized in that it has a feature that allows the use request of the monitored quantity.

In the demand monitoring control apparatus that monitors and controls the monitored amount so that the sum of the monitored amounts from the start of the demand time period to the end of the demand time period is equal to or less than the target demand value,
Check whether there is a usage request for the monitored amount within a predetermined time before the end of the demand time limit, and if there is a usage request, the demand at the end of the demand time period including the usage amount of the monitored amount by the usage request. Predict the sum of the monitored amount from the start of the time period to the end of the demand time period, and the predicted total amount of the monitored amount from the start of the demand time period to the end of the demand time period predicted including the usage amount of the monitored amount according to the use request is It is determined whether the target demand value is inside or outside, and if the predicted total amount is within the target demand value, the use request for the monitored amount is determined, and the monitored amount for which the use request has been received is the demand time limit. If the predicted total amount is outside the target demand value, the usage request for the monitored amount is sent, and the monitored amount for which the usage request has been received is the demand demand. Demand monitoring control apparatus characterized by having a function to allow to be used in limited after.

In the demand monitoring control device according to any one of claims 7 to 9,
The demand monitoring control apparatus having a function of permitting the use request of the monitored amount in a time zone before a predetermined time before the end of the demand time period.

In the demand monitoring control apparatus as described in any one of Claims 7-10,
A demand monitoring control device having a function of generating an alarm to notify that when a predetermined time before the end of the demand time period is reached after the start of the demand time period.

In the demand monitoring control apparatus according to any one of claims 7 to 11,
A function to lower the target demand value when a predetermined time before the end of the demand time limit is reached;
And a demand monitoring control device characterized by having a function of prohibiting a load input that is likely to exceed the lowered target demand value and not prohibiting a load input not likely to be exceeded.