JP2013247764A - Radio demand control system - Google Patents

Radio demand control system Download PDF

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JP2013247764A
JP2013247764A JP2012119730A JP2012119730A JP2013247764A JP 2013247764 A JP2013247764 A JP 2013247764A JP 2012119730 A JP2012119730 A JP 2012119730A JP 2012119730 A JP2012119730 A JP 2012119730A JP 2013247764 A JP2013247764 A JP 2013247764A
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unit
demand control
power
control system
cubicle
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JP5964136B2 (en
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Hitoshi Ohashi
均 大橋
Masayuki Kato
昌幸 加藤
Takumi Morita
拓実 森田
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Kawamura Electric 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
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
    • Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
    • Y02B70/3225—Demand response systems, e.g. load shedding, peak shaving
    • 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
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02B90/20—Smart grids as enabling technology in buildings sector
    • 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
    • Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
    • Y04S20/20—End-user application control systems
    • Y04S20/222—Demand response systems, e.g. load shedding, peak shaving
    • 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

Abstract

PROBLEM TO BE SOLVED: To make wiring work for communication between a cubicle and a building unnecessary and introduce a demand control system in an existing facility of a small-scale user such as a shop at a low price.SOLUTION: A demand control system 11 in a shop comprises: a measuring unit 12 for measuring power used by a load apparatus 5; a monitoring unit 13 for outputting a demand control command if a measured value of used power is expected to exceed a target value; a control unit 14 for controlling operation of the load apparatus 5 in response to the demand command; a browsing unit 15 for browsing a setting value, power usage history, and the like; and a communication unit 16 for connecting to an external management server 17 via a network. The measuring unit 12 is installed in a housing 31 of a cubicle 3, an antenna 35 is provided on the outer surface of the housing 31, and measured data of used power is transmitted to the monitoring unit 13 in a building 2 by radio communication.

Description

本発明は、主に小口需要家の電力管理に適したデマンド制御システムに関する。   The present invention relates to a demand control system suitable mainly for power management of small consumers.

近年、原子力発電設備の稼動停止に伴い、電力不足の長期化が予想されている。デマンド制御システムは、節電を目的とする電力管理を行うため、電力不足に対処するに有効なシステムである。しかし、現状このシステムは、大口需要家に普及しているものの、小売店舗や小規模工場等の小口需要家の間では、導入コストが高くつくため、普及率が極めて低い。   In recent years, it is expected that power shortages will be prolonged as nuclear power generation facilities are shut down. The demand control system performs power management for the purpose of power saving, and is an effective system for dealing with power shortages. However, although this system is currently widely used by large consumers, the introduction rate is high among small consumers such as retail stores and small factories, so the diffusion rate is extremely low.

そこで、従来、小口需要家向けの電力管理システムが提案されている。例えば、特許文献１には、コンビニ等の小規模施設の敷地に専用キュービクルと店舗建物を新設し、専用キュービクルに計測ユニットと制御ユニットを設置し、店舗建物内に省エネ電気機器と通信装置を設置し、外部の電力管理サーバで店舗の消費電力量を管理するシステムが提案されている。   Therefore, conventionally, a power management system for small consumers has been proposed. For example, in Patent Document 1, a dedicated cubicle and a store building are newly installed on the site of a small-scale facility such as a convenience store, a measurement unit and a control unit are installed in the dedicated cubicle, and energy-saving electrical devices and communication devices are installed in the store building. In addition, a system for managing the power consumption of a store with an external power management server has been proposed.

特開２００４−９６９０６号公報JP 2004-96906 A

ところが、従来技術によると、新規出店時であれば、システムをキュービクルや省エネ機器と合せて比較的安価に導入できるが、既存施設の場合は、付帯工事に多くの費用がかかる問題点があった。特に、キュービクルと店舗建物との間の通信線は地中埋設工事または架空工事を必要とするため、通信用配線工事費が高くつき、小口需要家がシステムの導入をためらう大きな要因となっていた。   However, according to the conventional technology, when a new store is opened, the system can be introduced with a cubicle and energy-saving equipment at a relatively low cost. However, in the case of an existing facility, there is a problem that it costs a lot of incidental work. . In particular, the communication line between the cubicle and the store building requires underground burial or aerial work, resulting in high wiring costs for communication, which is a major factor for small customers who are hesitant to introduce the system. .

そこで、本発明の目的は、通信用配線工事を不要にし、小口需要家の既存施設へより安価に導入できるデマンド制御システムを提供することにある。   Therefore, an object of the present invention is to provide a demand control system that eliminates the need for wiring work for communication and can be introduced into an existing facility of a small consumer at a lower cost.

上記課題を解決するために、本発明は、配電線路から電力を受電するキュービクルと、キュービクルから供給された電力を使用する負荷機器とを備えた施設において、次のようなデマンド制御システムを提供する。   In order to solve the above problems, the present invention provides the following demand control system in a facility including a cubicle that receives power from a distribution line, and a load device that uses the power supplied from the cubicle. .

（１）負荷機器の使用電力を計測する計測ユニットと、使用電力の計測値が目標値を超えると予測された場合にデマンド制御指令を出力する監視ユニットと、デマンド制御指令に応答して負荷機器の稼動を制御する制御ユニットとを備え、計測ユニットをキュービクルに設置し、監視ユニットを施設の建物に設置し、使用電力の計測データを無線通信によって計測ユニットから監視ユニットに送信することを特徴とするデマンド制御システム。 (1) A measuring unit that measures the power consumption of the load device, a monitoring unit that outputs a demand control command when the measured value of power consumption is predicted to exceed the target value, and a load device in response to the demand control command And a control unit for controlling the operation of the system, the measurement unit is installed in the cubicle, the monitoring unit is installed in the building of the facility, and the measurement data of the power used is transmitted from the measurement unit to the monitoring unit by wireless communication. Demand control system.

（２）デマンド制御指令を無線通信によって監視ユニットから制御ユニットに送信することを特徴とするデマンド制御システム。 (2) A demand control system, wherein a demand control command is transmitted from a monitoring unit to a control unit by wireless communication.

（３）計測ユニットをキュービクルの筐体に内蔵し、筐体の外面にアンテナを設け、計測データの無線通信をアンテナにより中継することを特徴とするデマンド制御システム。 (3) A demand control system in which a measurement unit is built in a cubicle casing, an antenna is provided on the outer surface of the casing, and wireless communication of measurement data is relayed by the antenna.

本発明によれば、使用電力の計測データを無線通信で計測ユニットから監視ユニットに送信するので、キュービクルと建物との間における通信用配線工事を不要にし、小口需要家の既存施設にデマンド制御システムを安価に導入できるという効果がある。   According to the present invention, the measurement data of the power used is transmitted from the measurement unit to the monitoring unit by wireless communication, so that the wiring work for communication between the cubicle and the building is unnecessary, and the demand control system is installed in the existing facility of the small consumer. Can be introduced at low cost.

本発明の一実施形態を示す店舗の外観図である。It is an external view of a store showing one embodiment of the present invention. 店舗のデマンド制御システムを示す全体図である。1 is an overall view showing a store demand control system. 計測、監視、制御ユニットの構成を機能的に示すブロック図である。It is a block diagram which shows functionally the structure of a measurement, monitoring, and a control unit. 監視ユニットの変更例を示すブロック図である。It is a block diagram which shows the example of a change of a monitoring unit. 計測ユニットおよびアンテナを示すキュービクルの一部立面図である。It is a partial elevation view of a cubicle showing a measurement unit and an antenna.

以下、本発明の実施形態を図面に基づいて説明する。図１に示す店舗１は、敷地内に建物２、キュービクル３、駐車場４を備えている。建物２の内外には、照明、冷凍、冷蔵、空調等の各種負荷機器５（代表的に空調室外機を図示）が設備されている。キュービクル３は、鋼板製の筺体３１に受配電機器（図示略）を内蔵し、配電線路６から受電した高圧を所要の低圧に変圧したのち、地中または架空給電線（図示略）を介して、低圧電力を負荷機器５に供給するようになっている。   Hereinafter, embodiments of the present invention will be described with reference to the drawings. A store 1 shown in FIG. 1 includes a building 2, a cubicle 3, and a parking lot 4 in a site. Inside and outside the building 2, various load devices 5 (typically air conditioner outdoor units are shown) such as lighting, freezing, refrigeration, and air conditioning are installed. The cubicle 3 incorporates power distribution / distribution equipment (not shown) in a steel plate casing 31 and transforms the high voltage received from the distribution line 6 to a required low voltage, and then through the ground or an overhead power supply line (not shown). The low-voltage power is supplied to the load device 5.

図２に示すように、店舗のデマンド制御システム１１は、負荷機器５の使用電力を計測する計測ユニット１２、店舗全体の電力使用状況を監視する監視ユニット１３、負荷機器５を制御する制御ユニット１４、設定値や電力使用履歴等を閲覧する閲覧ユニット１５、および、監視ユニット１３と閲覧ユニット１５を外部管理サーバー１７にネットワーク接続する通信ユニット１６から構成されている。そして、計測ユニット１２がキュービクル３に設置され、その他のユニット１３〜１６が建物２に設置されている。   As shown in FIG. 2, the store demand control system 11 includes a measurement unit 12 that measures the power usage of the load device 5, a monitoring unit 13 that monitors the power usage status of the entire store, and a control unit 14 that controls the load device 5. , A browsing unit 15 for browsing setting values, power usage history, and the like, and a communication unit 16 for connecting the monitoring unit 13 and the browsing unit 15 to the external management server 17 via a network. The measurement unit 12 is installed in the cubicle 3, and the other units 13 to 16 are installed in the building 2.

図３に示すように、計測ユニット１２は、電力計測部１２１と無線通信部１２２とを備えている。電力計測部１２１は、キュービクル３内の電力量計１８が発信したサービスパルスを受信し、所定の時間間隔（例えば１分）で各負荷機器５の使用電力を計測する。そして、無線通信部１２２が使用電力の計測データを無線通信によって計測ユニット１２から監視ユニット１３に送信するようになっている。   As shown in FIG. 3, the measurement unit 12 includes a power measurement unit 121 and a wireless communication unit 122. The power measuring unit 121 receives a service pulse transmitted from the watt hour meter 18 in the cubicle 3 and measures the power used by each load device 5 at a predetermined time interval (for example, 1 minute). And the wireless communication part 122 transmits the measurement data of used electric power from the measurement unit 12 to the monitoring unit 13 by wireless communication.

監視ユニット１３は、計測および制御ユニット１２，１４と通信を行う無線通信部１３１と、計測ユニット１２から受信した計測データに基づいて、所定時限（例えば３０分）単位で使用電力を累積する累積部１３２と、電力会社との契約値であるデマンド目標値を設定する設定部１３３と、使用電力の累積値がデマンド目標値を超えると予測された場合にデマンド制御指令を出力するデマンド制御部１３４とを備え、その制御指令を無線通信部１３１が監視ユニット１３から制御ユニット１４に無線送信するように構成されている。   The monitoring unit 13 includes a wireless communication unit 131 that communicates with the measurement and control units 12 and 14, and an accumulation unit that accumulates used power in units of a predetermined time period (for example, 30 minutes) based on measurement data received from the measurement unit 12. 132, a setting unit 133 that sets a demand target value that is a contract value with the electric power company, and a demand control unit 134 that outputs a demand control command when it is predicted that the accumulated value of the used power exceeds the demand target value; The wireless communication unit 131 is configured to wirelessly transmit the control command from the monitoring unit 13 to the control unit 14.

制御ユニット１４は、無線通信部１４１と機器制御部１４２とを備え、無線通信部１４１が監視ユニット１３からデマンド制御指令を受信し、この指令に応答し、機器制御部１４２が予め定められた手順、例えば、一部の負荷機器５への電力供給を遮断したり、複数の負荷機器５を順番で省エネ運転したりするなどの手順に従って、負荷機器５の稼動を制御し、店舗全体の使用電力を節減できるようになっている。   The control unit 14 includes a wireless communication unit 141 and a device control unit 142. The wireless communication unit 141 receives a demand control command from the monitoring unit 13, and responds to the command. For example, the operation of the load device 5 is controlled according to a procedure such as shutting off the power supply to some of the load devices 5 or sequentially operating the plurality of load devices 5 in an energy-saving manner. Can be saved.

なお、各ユニット１２，１３，１４の無線通信部１２２，１３１，１４１は、特定周波数帯域（例えば９２０ＭＨｚ）の近距離無線用電波を使用し、暗号化処理したデータを送受信する。また、図４に示すように、監視ユニット１３に、デマンド目標値設定部１３３に加えて時間帯目標値設定部１３５を設け、一日のうち特定の時間帯、例えば、店舗１の開店前および／または閉店後の時間帯に、負荷機器５の省エネ運転を強化するなどの制御を行うこともできる。   Note that the wireless communication units 122, 131, and 141 of the units 12, 13, and 14 transmit and receive encrypted data using short-range radio waves in a specific frequency band (eg, 920 MHz). As shown in FIG. 4, the monitoring unit 13 is provided with a time zone target value setting unit 135 in addition to the demand target value setting unit 133, so that a specific time zone of the day, for example, before opening the store 1 and It is also possible to perform control such as enhancing the energy saving operation of the load device 5 during the time period after the store is closed.

図５に示すように、計測ユニット１２は、キュービクル３の鋼板製筐体３１に内蔵され、裏面の永久磁石１２３によって筐体３１の適宜場所に着脱可能に装備されている。筐体３１の外面、例えば前面扉３２には、窓ガラス３３の補強用金網３４を兼用したアンテナ３５が設けられている。アンテナ３５は、給電線３６を介して計測ユニット１２の無線通信部１２２（図３参照）に接続され、金属製の筐体３１に妨げられることなく、計測データの無線通信を中継できるようになっている。   As shown in FIG. 5, the measuring unit 12 is built in a steel plate casing 31 of the cubicle 3 and is detachably mounted at an appropriate place on the casing 31 by a permanent magnet 123 on the back surface. An antenna 35 that also serves as a reinforcing wire mesh 34 for the window glass 33 is provided on the outer surface of the housing 31, for example, the front door 32. The antenna 35 is connected to the wireless communication unit 122 (see FIG. 3) of the measurement unit 12 via the feeder line 36 and can relay wireless communication of measurement data without being obstructed by the metal casing 31. ing.

従って、この実施形態のデマンド制御システム１１によれば、使用電力の計測データを無線通信によって計測ユニット１２から監視ユニット１３に送信するので、キュービクル３と建物２との間における通信用の地中配線工事や架空配線工事を不要にできる。また、工事期間中に休業する必要もなくなるので、店舗１の既存施設にデマンド制御システム１１を安価なコストで導入できる。しかも、デマンド制御指令を無線で監視ユニット１３から制御ユニット１４に送信するので、システム１１の導入にあたり、建物２内の配線工事も簡単に済ませることができる。   Therefore, according to the demand control system 11 of this embodiment, since the measurement data of the power used is transmitted from the measurement unit 12 to the monitoring unit 13 by wireless communication, the underground wiring for communication between the cubicle 3 and the building 2 Construction and overhead wiring work can be eliminated. Further, since it is not necessary to be closed during the construction period, the demand control system 11 can be introduced into the existing facility of the store 1 at a low cost. In addition, since the demand control command is transmitted from the monitoring unit 13 to the control unit 14 by radio, the wiring work in the building 2 can be easily completed when the system 11 is introduced.

本発明は、上記実施形態に限定されるものではなく、次に例示するように、発明の趣旨を逸脱しない範囲で、各部の構成を適宜に変更して実施することも可能である。
（１）本発明の無線デマンド制御システム１１を事務所、工場、倉庫などの各種小規模施設に適用すること。
（２）計測ユニット１２のアンテナ３５を前面扉３２のハンドル３７（図１参照）、筐体３１の換気口３８など、キュービクル３の外面各所に設置すること。 The present invention is not limited to the above-described embodiment, and can be implemented by appropriately changing the configuration of each part without departing from the spirit of the invention as illustrated below.
(1) The wireless demand control system 11 of the present invention is applied to various small-scale facilities such as offices, factories, and warehouses.
(2) The antenna 35 of the measurement unit 12 is installed at various locations on the outer surface of the cubicle 3, such as the handle 37 (see FIG. 1) of the front door 32 and the ventilation port 38 of the housing 31.

１ 店舗
２ 建物
３ キュービクル
５ 負荷機器
６ 配電線路
１１ デマンド制御システム
１２ 計測ユニット
１３ 監視ユニット
１４ 制御ユニット
３５ アンテナ DESCRIPTION OF SYMBOLS 1 Store 2 Building 3 Cubicle 5 Load apparatus 6 Distribution line 11 Demand control system 12 Measurement unit 13 Monitoring unit 14 Control unit 35 Antenna

Claims (3)

配電線路から電力を受電するキュービクルと、キュービクルから供給された電力を使用する負荷機器とを備えた施設において、
負荷機器の使用電力を計測する計測ユニットと、使用電力の計測値が目標値を超えると予測された場合にデマンド制御指令を出力する監視ユニットと、デマンド制御指令に応答して負荷機器の稼動を制御する制御ユニットとを備え、
前記計測ユニットをキュービクルに設置し、前記監視ユニットを施設の建物に設置し、前記使用電力の計測データを無線通信によって計測ユニットから監視ユニットに送信することを特徴とするデマンド制御システム。 In facilities equipped with cubicles that receive power from distribution lines and load devices that use power supplied from cubicles,
A measurement unit that measures the power consumption of the load equipment, a monitoring unit that outputs a demand control command when the measured power consumption value is predicted to exceed the target value, and operates the load equipment in response to the demand control command. A control unit for controlling,
The demand control system, wherein the measurement unit is installed in a cubicle, the monitoring unit is installed in a building of a facility, and the measurement data of the power used is transmitted from the measurement unit to the monitoring unit by wireless communication. 前記デマンド制御指令を無線通信によって監視ユニットから制御ユニットに送信することを特徴とする請求項１記載のデマンド制御システム。   The demand control system according to claim 1, wherein the demand control command is transmitted from the monitoring unit to the control unit by wireless communication. 前記計測ユニットをキュービクルの筐体に内蔵し、筐体の外面にアンテナを設け、前記計測データの無線通信をアンテナにより中継することを特徴とする請求項１又は２記載のデマンド制御システム。   The demand control system according to claim 1 or 2, wherein the measurement unit is built in a housing of a cubicle, an antenna is provided on an outer surface of the housing, and wireless communication of the measurement data is relayed by the antenna.
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