JP2016036207A - Power consumption analysis method - Google Patents

Power consumption analysis method Download PDF

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JP2016036207A
JP2016036207A JP2014157768A JP2014157768A JP2016036207A JP 2016036207 A JP2016036207 A JP 2016036207A JP 2014157768 A JP2014157768 A JP 2014157768A JP 2014157768 A JP2014157768 A JP 2014157768A JP 2016036207 A JP2016036207 A JP 2016036207A
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power consumption
measurement data
analysis method
state
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雅樹 横坂
Masaki YOKOSAKA
雅樹 横坂
亮二 宮内
Ryoji MIYAUCHI
亮二 宮内
慶喜 川原
Yoshinobu Kawahara
慶喜 川原
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Tokyo Electric Power Company Holdings Inc
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Tokyo Electric Power Co Inc
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
    • Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
    • Y04S40/126—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wireless data transmission

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Abstract

PROBLEM TO BE SOLVED: To provide a power consumption analysis method in which useful information is provided through a user by further effectively utilizing the measurement data of power consumption in electrical equipment.SOLUTION: In a configuration of a power consumption analysis method, the measurement data of power consumption stored for each unit time of electrical equipment (machine tool) is accumulated, and the measurement data of power consumption is classified into a plurality of classes including at least a stand-by state and a working state by clustering processing, thereby analyzing the working state of the electrical equipment along time sequence with a boundary between the plurality of classes as a threshold.SELECTED DRAWING: Figure 2

Description

本発明は、電気機器において消費された電力を用いてかかる電気機器の動作状態を解析する消費電力解析方法に関する。   The present invention relates to a power consumption analysis method for analyzing an operating state of an electrical device using power consumed in the electrical device.

電力によって動作する電気機器、例えば生産機器が設けられている工場等では、かかる生産機器において消費された電力（消費電力）の計測が行われている。例えば特許文献１では、第１の機能によって設備の消費電力を計測し、消費電力が下限閾値以下となった状態が監視時限を超えたと判定されたら、第２の機能によって下限アラームを発生している。そして、下限アラームの発生時には第３の機能によって設備への電源を遮断し、その後、第４の機能によって下限アラームを解除すると共に第３の機能を解除して設備の電源を再投入させている。特許文献１によれば、かかる構成により設備において非稼働時に消費される待機電力を削減することが可能であるとしている。   In an electrical device that operates by electric power, for example, a factory where a production device is provided, power consumption (power consumption) in the production device is measured. For example, in Patent Document 1, the power consumption of the facility is measured by the first function, and if it is determined that the state where the power consumption is equal to or lower than the lower limit threshold exceeds the monitoring time limit, the lower limit alarm is generated by the second function. Yes. Then, when the lower limit alarm occurs, the power to the facility is shut off by the third function, and then the lower limit alarm is canceled by the fourth function and the third function is canceled and the facility is turned on again. . According to Patent Literature 1, it is possible to reduce standby power consumed when the facility is not in operation by such a configuration.

特開２０１２−１５２００４号公報JP 2012-152004 A

消費電力の計測データは、上記特許文献１のように節電や省エネを目的として活用されることが一般的である。しかしながら、需要家のニーズは多岐にわたってきており、また近年では節電や省エネに対する意識は更に高まっている。このため、それらのニーズに応えるべく、消費電力の計測データを更に有効活用できないかが検討されている。   The measurement data of power consumption is generally used for the purpose of power saving and energy saving as in Patent Document 1 described above. However, the needs of consumers have been diversified, and in recent years, awareness of power saving and energy saving has further increased. For this reason, in order to meet these needs, it has been examined whether or not the power consumption measurement data can be used more effectively.

本発明は、このような課題に鑑み、電気機器における消費電力の計測データの更なる有効活用を図ることにより、需要家により有益な情報を提供することが可能な消費電力解析方法を提供することを目的としている。   In view of such a problem, the present invention provides a power consumption analysis method capable of providing more useful information to consumers by further effective utilization of power consumption measurement data in electrical equipment. It is an object.

上記課題を解決するために、本発明にかかる消費電力解析方法の代表的な構成は、電気機器の単位時間ごとに記憶した消費電力の計測データを蓄積し、消費電力の計測データをクラスタリング処理することによって、少なくとも待機状態と稼動状態を含む複数のクラスに分類し、複数のクラスの境界を閾値として、電気機器の動作状態を時系列に沿って解析することを特徴とする。   In order to solve the above-described problem, a representative configuration of the power consumption analysis method according to the present invention is to accumulate power consumption measurement data stored for each unit time of an electrical device, and to cluster the power consumption measurement data. Thus, it is classified into a plurality of classes including at least a standby state and an operating state, and an operation state of the electric device is analyzed in time series using boundaries between the plurality of classes as threshold values.

上記構成によれば、消費電力の計測データをクラスタリング処理することによって、複数のクラス、すなわち複数の動作状態に応じた消費電力の閾値が自動的に設定される。そして、この閾値に応じて、蓄積された消費電力の計測データを解析することにより、電気機器の動作状態を自動的に判断することができる。このように閾値の設定および電気機器の動作状態の判断を自動化できることにより、需要家は煩雑な処理を必要とすることなく電気機器の動作状態を容易に把握することが可能となる。したがって、需要家は、設備をより効率的に運用することができ、ひいてはコストの削減を図ることが可能となる。   According to the above configuration, the power consumption threshold value corresponding to a plurality of classes, that is, a plurality of operation states is automatically set by performing clustering processing on the power consumption measurement data. Then, according to the threshold value, the operation state of the electric device can be automatically determined by analyzing the accumulated measurement data of power consumption. Since the setting of the threshold value and the determination of the operating state of the electrical device can be automated in this way, the consumer can easily grasp the operating state of the electrical device without requiring complicated processing. Therefore, the customer can operate the facilities more efficiently, and as a result, the cost can be reduced.

上記電気機器における消費電力を波形表示し、波形表示において、電気機器の動作状態に応じて色分けして出力するとよい。かかる構成によれば、消費電力の波形表示を見るだけで、電気機器の動作状態を直感的に把握することが可能となる。   The power consumption in the electrical device may be displayed in a waveform, and in the waveform display, the color may be output according to the operating state of the electrical device. According to such a configuration, it is possible to intuitively grasp the operation state of the electric device only by looking at the waveform display of the power consumption.

本発明によれば、電気機器における消費電力の計測データの更なる有効活用を図ることにより、需要家により有益な情報を提供することが可能な消費電力解析方法を提供することができる。   ADVANTAGE OF THE INVENTION According to this invention, the power consumption analysis method which can provide useful information by a consumer can be provided by aiming at the further effective utilization of the power consumption measurement data in an electric equipment.

本実施形態にかかる消費電力解析方法を説明する図である。It is a figure explaining the power consumption analysis method concerning this embodiment. 本実施形態の消費電力解析方法における処理を説明する図である。It is a figure explaining the process in the power consumption analysis method of this embodiment.

以下に添付図面を参照しながら、本発明の好適な実施形態について詳細に説明する。かかる実施形態に示す寸法、材料、その他具体的な数値などは、発明の理解を容易とするための例示に過ぎず、特に断る場合を除き、本発明を限定するものではない。なお、本明細書及び図面において、実質的に同一の機能、構成を有する要素については、同一の符号を付することにより重複説明を省略し、また本発明に直接関係のない要素は図示を省略する。   Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. The dimensions, materials, and other specific numerical values shown in the embodiments are merely examples for facilitating understanding of the invention, and do not limit the present invention unless otherwise specified. In the present specification and drawings, elements having substantially the same function and configuration are denoted by the same reference numerals, and redundant description is omitted, and elements not directly related to the present invention are not illustrated. To do.

図１は、本実施形態にかかる消費電力解析方法を説明する図である。図１に示すように、本実施形態では、電気によって動作する電気機器として、工場等の設備に設置される生産機器である工作機械１００ａを例示している。ただし、これに限定するものではなく、他の電気機器における消費電力を解析する際にも当然にして本発明を適用可能である。   FIG. 1 is a diagram for explaining a power consumption analysis method according to the present embodiment. As shown in FIG. 1, in the present embodiment, a machine tool 100a that is a production device installed in equipment such as a factory is illustrated as an electric device that operates by electricity. However, the present invention is not limited to this, and the present invention can naturally be applied when analyzing power consumption in other electric devices.

図１に示すように、本実施形態の消費電力解析方法は、解析装置１１０および電流センサ１０２ａを用いて実現される。電気機器である工作機械１００ａは、それぞれ系統（商用電源）に接続され、かかる系統から電力が供給される。また工作機械１００ａには電流センサ１０２ａ（または電力量センサ）が接続されていて、電流センサ１０２ａにおいて工作機械１００ａに流れる電流が計測される。   As shown in FIG. 1, the power consumption analysis method of the present embodiment is realized using an analysis device 110 and a current sensor 102a. The machine tool 100a, which is an electrical device, is connected to a system (commercial power source) and supplied with power from the system. Further, a current sensor 102a (or an electric energy sensor) is connected to the machine tool 100a, and the current flowing through the machine tool 100a is measured by the current sensor 102a.

なお、本実施形態では、電流センサ１０２ａによって計測された電流値を解析装置１１０に送信し、かかる電流値を参照して電気機器における単位時間ごとの消費電力を算出する構成を例示するが、これに限定するものではない。例えば、本実施形態の電流センサに替えて電力量センサを設け、かかる電力量センサによって計測された電力量を参照して電気機器における単位時間ごとの消費電力を算出する構成とすることも可能である。   In the present embodiment, the current value measured by the current sensor 102a is transmitted to the analysis device 110, and the configuration for calculating the power consumption per unit time in the electrical device with reference to the current value is exemplified. It is not limited to. For example, a power amount sensor may be provided instead of the current sensor of the present embodiment, and the power consumption per unit time in the electrical device may be calculated with reference to the power amount measured by the power amount sensor. is there.

電流センサ１０２ａにおいて計測された工作機械１００ａの電流値（以下、単に電流値と称する）は、解析装置１１０に送信される。本実施形態では、電流センサ１０２ａは無線によって電流値を送信する。これにより、電流値の送信に用いる配線が不要となるため、装置の簡略化ひいては装置コストの削減を図ることが可能となる。なお、本実施形態の構成は例示にすぎず、電流センサ１０２ａによる電流値の送信は有線であってもよい。   A current value of the machine tool 100a measured by the current sensor 102a (hereinafter simply referred to as a current value) is transmitted to the analysis device 110. In the present embodiment, the current sensor 102a transmits a current value wirelessly. This eliminates the need for wiring used to transmit the current value, thereby simplifying the device and thus reducing the device cost. Note that the configuration of the present embodiment is merely an example, and the transmission of the current value by the current sensor 102a may be wired.

電流センサ１０２ａから送信された電流値は、解析装置１１０の受信アンテナ１１２ａにおいて受信される。受信された電流値は、受信部１１２を介して記憶部１１４に送信され、かかる記憶部１１４に記憶される。記憶部１１４に記憶された電流値は、単位時間ごとに解析部１１６に送信される。   The current value transmitted from the current sensor 102 a is received by the receiving antenna 112 a of the analysis device 110. The received current value is transmitted to the storage unit 114 via the reception unit 112 and stored in the storage unit 114. The current value stored in the storage unit 114 is transmitted to the analysis unit 116 every unit time.

解析部１１６では、記憶部１１４から送信された単位時間ごとの電流値から、電気機器（本実施形態では工作機械１００ａ）の単位時間ごとの消費電力を算出する。そして、解析部１１６は、電気機器の単位時間ごとの消費電力の計測データを記憶部１１４に記憶する（蓄積する）。   The analysis unit 116 calculates the power consumption per unit time of the electric device (machine tool 100a in the present embodiment) from the current value per unit time transmitted from the storage unit 114. And the analysis part 116 memorize | stores (accumulate | stores) the measurement data of the power consumption for every unit time of an electric equipment in the memory | storage part 114. FIG.

図２は、本実施形態の消費電力解析方法における処理を説明する図である。本実施形態の消費電力解析方法の特徴として、解析部１１６は、消費電力の計測データのクラスタリング処理および解析処理を行う。図２（ａ）は、電気機器における消費電力の計測データの波形表示を例示する図である。記憶部１１４に蓄積された消費電力の計測データを波形表示すると、図２（ａ）に示すようになる。   FIG. 2 is a diagram illustrating processing in the power consumption analysis method of the present embodiment. As a feature of the power consumption analysis method of the present embodiment, the analysis unit 116 performs clustering processing and analysis processing of power consumption measurement data. FIG. 2A is a diagram illustrating a waveform display of power consumption measurement data in an electric device. When the power consumption measurement data accumulated in the storage unit 114 is displayed as a waveform, it is as shown in FIG.

本実施形態では、解析部１１６はまず、消費電力の計測データのクラスタリング処理を行う（ｋ−ｍｅａｎｓ法）。クラスタリング処理では、消費電力の計測データを、消費電力の大きさに応じて複数のクラス（クラスタ）に分類する。これにより、図２（ａ）に示す消費電力の計測データは、図２（ｂ）に示すように、３つのクラスに分類される。これらのクラスは、消費電力が大きい方から順に、稼働状態、段取り状態、待機状態のクラスと定義することができる。   In the present embodiment, the analysis unit 116 first performs clustering processing of power consumption measurement data (k-means method). In the clustering process, the power consumption measurement data is classified into a plurality of classes (clusters) according to the power consumption. Thereby, the power consumption measurement data shown in FIG. 2A is classified into three classes as shown in FIG. 2B. These classes can be defined as classes of an operating state, a setup state, and a standby state in descending order of power consumption.

上記のうち、稼働状態とは、工作機械１００ａにより製品の製造が行われている状態のことであり、段取り状態とは、製造前の段取りや、工作機械１００ａによって製造する製品を変更する際の段取りを行っている状態のことである。待機状態とは、稼働状態および段取り状態のいずれでもなく、工作機械１００ａが停止している状態のことである。   Among the above, the operating state is a state in which a product is manufactured by the machine tool 100a, and the setup state is a setup before the manufacture or when a product manufactured by the machine tool 100a is changed. It is the state where the setup is performed. The standby state is a state in which the machine tool 100a is stopped, not an operating state or a setup state.

なお、本実施形態では、クラスタリング処理によって消費電力の計測データが３つのクラスに分類される場合を例示したが、これに限定するものではない。クラスタリング処理では、少なくとも待機状態と稼動状態を含む複数のクラス、すなわち２つ以上のクラスに分類できればよく、上記説明したように、待機状態および稼働状態以外のクラスに更に分類することも可能である。   In the present embodiment, the case where the power consumption measurement data is classified into three classes by the clustering process is illustrated, but the present invention is not limited to this. The clustering process only needs to be classified into a plurality of classes including at least a standby state and an operating state, that is, two or more classes, and can be further classified into classes other than the standby state and the operating state as described above. .

上記説明したように消費電力の計測データを３つのクラス（稼働状態、段取り状態、待機状態）に分類したら、解析部１１６は、それらのクラスの境界の消費電力の値を閾値に設定する。図２（ｂ）に示す例では、複数のクラスの境界の閾値として、稼働状態と段取り状態との間の境界を閾値Ａとし、段取り状態と待機状態との間の境界を閾値Ｂとしている。   As described above, after classifying the power consumption measurement data into three classes (operation state, setup state, standby state), the analysis unit 116 sets the power consumption values at the boundaries of these classes as threshold values. In the example shown in FIG. 2B, the threshold between the operating state and the set-up state is set as the threshold A, and the boundary between the set-up state and the standby state is set as the threshold B as the threshold of the plurality of classes.

複数のクラスの間の境界を閾値として設定したら、解析部１１６は、その閾値によって、電気機器の動作状態を時系列に沿って解析する。これにより、図２（ａ）に示す消費電力の波形表示には、図２（ｃ）に示すように工作機械１００ａの動作状態の情報が付与される。   When the boundary between the plurality of classes is set as the threshold value, the analysis unit 116 analyzes the operation state of the electric device along the time series based on the threshold value. Thereby, the information on the operating state of the machine tool 100a is added to the waveform display of the power consumption shown in FIG. 2A as shown in FIG.

上記説明したように、本実施形態の消費電力解析方法によれば、クラスタリング処理を行うことによって、消費電力の計測データを、電気機器の動作状態に応じた複数のクラスに分類し、その複数のクラスの境界の閾値が自動的に設定される。そして、この閾値によって消費電力の計測データを解析することにより、電気機器の動作状態を自動的に判断することができる。したがって、需要家は、煩雑な処理を必要とすることなく電気機器の動作状態を容易に把握することができるため、設備の効率的な運用、ひいてはコストを削減することが可能となる。   As described above, according to the power consumption analysis method of the present embodiment, by performing clustering processing, the power consumption measurement data is classified into a plurality of classes according to the operating state of the electrical device, and the plurality of classes The class boundary threshold is automatically set. Then, by analyzing the power consumption measurement data based on this threshold value, it is possible to automatically determine the operating state of the electric device. Therefore, since the consumer can easily grasp the operating state of the electric equipment without requiring complicated processing, it is possible to efficiently operate the facility and thus reduce the cost.

例えば段取り状態や待機状態の消費電力（待機電力）が大きい場合には、これに気づいて作業直前に電源投入するように手順を変更することができる。また待機時間が長い場合には、製造する製品の順序を替えて生産効率の向上を図ることができる。したがって、電気機器における消費電力の計測データの更なる有効活用を図り、需要家により有益な情報を提供することができる。   For example, when the power consumption (standby power) in the setup state or the standby state is large, the procedure can be changed so that the power is turned on immediately before the work is noticed. When the standby time is long, the production efficiency can be improved by changing the order of products to be manufactured. Therefore, the measurement data of the power consumption in the electric device can be further effectively used, and more useful information can be provided to the consumer.

より好ましくは、出力部１２０は、図２（ｃ）に示すように電気機器における消費電力の計測データを波形表示する際、かかる波形表示を、電気機器の動作状態に応じて色分けして出力するとよい。これにより、消費電力の波形表示を見るだけで、電気機器の動作状態を直感的に把握することができる。したがって、消費電力の計測データをより有効活用することが可能となる。   More preferably, when the output unit 120 displays the waveform of the power consumption measurement data in the electric device as shown in FIG. 2C, the output unit 120 outputs the waveform display in different colors according to the operating state of the electric device. Good. Thereby, it is possible to intuitively grasp the operating state of the electric device only by looking at the waveform display of the power consumption. Therefore, it becomes possible to make more effective use of power consumption measurement data.

以上、添付図面を参照しながら本発明の好適な実施形態について説明したが、本発明は係る例に限定されないことは言うまでもない。当業者であれば、特許請求の範囲に記載された範疇内において、各種の変更例または修正例に想到し得ることは明らかであり、それらについても当然に本発明の技術的範囲に属するものと了解される。   As mentioned above, although preferred embodiment of this invention was described referring an accompanying drawing, it cannot be overemphasized that this invention is not limited to the example which concerns. It will be apparent to those skilled in the art that various changes and modifications can be made within the scope of the claims, and these are naturally within the technical scope of the present invention. Understood.

本発明は、電気機器において消費された電力を用いてかかる電気機器の動作状態を解析する消費電力解析方法に関する。   The present invention relates to a power consumption analysis method for analyzing an operating state of an electrical device using power consumed in the electrical device.

１００ａ…工作機械、１０２ａ…電流センサ、１１０…解析装置、１１２…受信部、１１２ａ…受信アンテナ、１１４…記憶部、１１６…解析部 DESCRIPTION OF SYMBOLS 100a ... Machine tool, 102a ... Current sensor, 110 ... Analysis apparatus, 112 ... Reception part, 112a ... Reception antenna, 114 ... Memory | storage part, 116 ... Analysis part

Claims (2)

電気機器の単位時間ごとに記憶した消費電力の計測データを蓄積し、
前記消費電力の計測データをクラスタリング処理することによって、少なくとも待機状態と稼動状態を含む複数のクラスに分類し、
前記複数のクラスの境界を閾値として、前記電気機器の動作状態を時系列に沿って解析することを特徴とする消費電力解析方法。 Accumulate power consumption measurement data stored per unit time of electrical equipment,
By classifying the measurement data of the power consumption into a plurality of classes including at least a standby state and an operating state,
A power consumption analysis method characterized in that the operation state of the electric device is analyzed in time series using boundaries between the plurality of classes as threshold values. 前記電気機器における消費電力を波形表示し、
前記波形表示において、前記電気機器の動作状態に応じて色分けして出力することを特徴とする請求項１に記載の消費電力解析方法。 Waveform display of power consumption in the electrical equipment,
2. The power consumption analysis method according to claim 1, wherein the waveform display is performed by color-coding according to an operating state of the electric device.
JP2014157768A 2014-08-01 2014-08-01 Power consumption analysis method Pending JP2016036207A (en)

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