JP6179048B2 - Power measuring device - Google Patents

Power measuring device Download PDF

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JP6179048B2
JP6179048B2 JP2012080777A JP2012080777A JP6179048B2 JP 6179048 B2 JP6179048 B2 JP 6179048B2 JP 2012080777 A JP2012080777 A JP 2012080777A JP 2012080777 A JP2012080777 A JP 2012080777A JP 6179048 B2 JP6179048 B2 JP 6179048B2
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power generation
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洋二 水野
洋二 水野
慶人 陸野
慶人 陸野
賢吾 宮本
賢吾 宮本
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Panasonic Intellectual Property Management Co Ltd
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Description

本発明は、電力計測装置に関する。   The present invention relates to a power measuring device.

従来の電力計測装置として、例えば、特許文献１に記載されているものがある。特許文献１記載の従来例は、商用の電力系統から供給される電流及び電圧を計測する計測部と、太陽電池や燃料電池などの発電設備の出力電流を計測する計測部と、２つの計測部の計測値を切り替えて演算部に入力する切替部と、電力量を演算する演算部とを備える。つまり、特許文献１記載の従来例では、１つの演算部が電力系統から供給される電力量と、発電設備で発電される電力量(発電量)とを双方とも演算することで部品点数の削減が図られている。なお、電力計測装置の演算部で演算された電力量の計測値は、専用の表示装置などの外部機器に出力され、当該外部機器によって報知(表示)される。   As a conventional power measuring device, for example, there is one described in Patent Document 1. The conventional example described in Patent Document 1 includes a measurement unit that measures current and voltage supplied from a commercial power system, a measurement unit that measures output current of a power generation facility such as a solar cell or a fuel cell, and two measurement units. A switching unit that switches the measured values and inputs them to the calculation unit, and a calculation unit that calculates the amount of power. That is, in the conventional example described in Patent Document 1, the number of parts is reduced by calculating both the amount of power supplied from the power system and the amount of power generated by the power generation facility (power generation amount) by one calculation unit. Is planned. The measured value of the electric energy calculated by the calculation unit of the power measuring device is output to an external device such as a dedicated display device, and is notified (displayed) by the external device.

特開２０１１−２７５８９号公報JP 2011-27589 A

しかしながら、特許文献１記載の従来例では、電力系統の電力量と発電設備の発電量を並行して計測できるものの、ある特定の負荷機器の消費電力を計測したいという要望に応えることができない。例えば、特許文献１記載の従来例において、発電設備用の電流センサで負荷機器の消費電流を計測した場合、負荷機器の消費電力量が発電設備の発電量として外部機器に出力されてしまう。その結果、外部機器において、負荷機器の消費電力量が発電設備の発電量として誤って報知(表示)されてしまう虞があった。   However, although the conventional example described in Patent Document 1 can measure the power amount of the power system and the power generation amount of the power generation facility in parallel, it cannot meet the demand for measuring the power consumption of a specific load device. For example, in the conventional example described in Patent Document 1, when the current consumption of the load device is measured by the current sensor for the power generation facility, the power consumption amount of the load device is output to the external device as the power generation amount of the power generation facility. As a result, in the external device, there is a possibility that the power consumption amount of the load device is erroneously notified (displayed) as the power generation amount of the power generation facility.

本発明は、上記課題に鑑みて為されたものであり、負荷機器の消費電力量と発電設備の発電量を択一的に計測可能として使い勝手の向上を図ることを目的とする。   The present invention has been made in view of the above problems, and an object of the present invention is to improve usability by selectively measuring the power consumption of a load device and the power generation of a power generation facility.

本発明の電力計測装置は、それぞれに電流センサが接続される複数のセンサ接続端子と、前記センサ接続端子に接続された前記電流センサの計測値を用いて電力量の計測値を演算する演算部と、前記演算部で演算される前記電力量の計測値を外部機器に伝送する伝送部と、前記演算部に対して、発電量を演算する第１演算モードと消費電力量を演算する第２演算モードの何れか一方のモードを択一的に設定する設定部とを備え、前記演算部は、複数の前記センサ接続端子のうちの少なくとも１つのセンサ接続端子に接続される前記電流センサの計測値を用いて電力量を演算する場合、前記設定部で設定されるモードが前記第１演算モードであれば発電量を演算し、前記設定部で設定されるモードが前記第２演算モードであれば消費電力量を演算することを特徴とする。   The power measuring device of the present invention includes a plurality of sensor connection terminals each connected to a current sensor, and a calculation unit that calculates a measurement value of electric energy using the measurement value of the current sensor connected to the sensor connection terminal. A transmission unit that transmits the measured value of the electric energy calculated by the calculation unit to an external device, a first calculation mode for calculating the power generation amount, and a second for calculating the power consumption amount for the calculation unit. A setting unit that alternatively sets one of the calculation modes, and the calculation unit measures the current sensor connected to at least one of the plurality of sensor connection terminals. When calculating the amount of power using a value, if the mode set by the setting unit is the first calculation mode, the power generation amount is calculated, and the mode set by the setting unit is the second calculation mode. Power consumption Characterized in that it.

この電力計測装置において、商用の電力系統から供給される電流を計測するための電流センサが接続される前記センサ接続端子を備え、前記演算部は、前記センサ接続端子に接続された前記電流センサの計測値を用いて前記電力系統から供給される電力量の計測値を演算し、前記伝送部は、前記演算部で演算される前記電力量の計測値を前記外部機器に伝送することが好ましい。   The power measuring device includes the sensor connection terminal to which a current sensor for measuring a current supplied from a commercial power system is connected, and the calculation unit includes the current sensor connected to the sensor connection terminal. It is preferable that a measured value of the amount of power supplied from the power system is calculated using the measured value, and the transmission unit transmits the measured value of the power amount calculated by the calculating unit to the external device.

この電力計測装置において、前記伝送部は、電波を媒体とする無線信号によって前記計測値を前記外部機器に伝送することが好ましい。   In this power measurement apparatus, it is preferable that the transmission unit transmits the measurement value to the external device by a radio signal using radio waves as a medium.

本発明の電力計測装置は、演算部が、設定部で設定されるモードが第１演算モードであれば発電設備の発電量を演算し、設定部で設定されるモードが第２演算モードであれば負荷機器の消費電力量を演算するので、負荷機器の消費電力量と発電設備の発電量を択一的に計測可能として使い勝手の向上が図れるという効果がある。   In the power measuring apparatus of the present invention, the calculation unit calculates the power generation amount of the power generation facility if the mode set by the setting unit is the first calculation mode, and the mode set by the setting unit is the second calculation mode. For example, since the power consumption of the load device is calculated, it is possible to selectively measure the power consumption of the load device and the power generation amount of the power generation facility, thereby improving the usability.

本発明に係る電力計測装置の実施形態を示すブロック図である。It is a block diagram showing an embodiment of a power measuring device concerning the present invention. 同上のカバーを外した状態の正面図である。It is a front view of the state which removed the cover same as the above.

以下、図面を参照して本発明に係る電力計測装置の実施形態について詳細に説明する。なお、本実施形態の電力計測装置１は、商用の電力系統(図示せず)から供給される電力量と、発電設備の発電量とを計測するものである。本実施形態における発電設備は、太陽電池(図示せず)、太陽電池から出力される直流電力を交流電力に変換するパワーコンディショナ２、太陽電池で発電された電力を蓄電する蓄電池(図示せず)などで構成される系統連系形の太陽光発電システムである。   Hereinafter, embodiments of a power measuring apparatus according to the present invention will be described in detail with reference to the drawings. The power measuring device 1 of the present embodiment measures the amount of power supplied from a commercial power system (not shown) and the amount of power generated by the power generation facility. The power generation facility in the present embodiment includes a solar cell (not shown), a power conditioner 2 that converts DC power output from the solar cell into AC power, and a storage battery (not shown) that stores the power generated by the solar cell. ) Etc. is a grid-connected solar power generation system.

パワーコンディショナ２は、太陽電池の発電量を所定のサンプリング周期で周期的に計測し、各サンプリング周期毎の発電量の計測値データを通信線４を介して外部に出力(送信)する機能(以下、外部出力機能と呼ぶ。)を有する。なお、パワーコンディショナ２の出力端子(交流電力の出力端子)は、分電盤(図示せず)の主幹ブレーカ(図示せず)の１次側端子に接続される。   The power conditioner 2 periodically measures the power generation amount of the solar cell at a predetermined sampling cycle, and outputs (transmits) the measurement value data of the power generation amount for each sampling cycle to the outside via the communication line 4 ( Hereinafter referred to as an external output function). In addition, the output terminal (output terminal of alternating current power) of the power conditioner 2 is connected to the primary side terminal of the main breaker (not shown) of a distribution board (not shown).

本実施形態の電力計測装置１は、図１に示すように演算部10、３つのセンサ接続端子11A〜11C、電圧入力端子13、伝送部14、通信用端子15、通信部16、設定部17などを備える。   As shown in FIG. 1, the power measuring device 1 of the present embodiment includes a calculation unit 10, three sensor connection terminals 11 </ b> A to 11 </ b> C, a voltage input terminal 13, a transmission unit 14, a communication terminal 15, a communication unit 16, and a setting unit 17. Etc.

３つのセンサ接続端子11A〜11Cのうちの１つのセンサ接続端子11Aには、商用の電力系統(図示せず)から供給される電流を計測するための電流センサ12Aが接続される。   A current sensor 12A for measuring a current supplied from a commercial power system (not shown) is connected to one sensor connection terminal 11A among the three sensor connection terminals 11A to 11C.

また、センサ接続端子11Bには、外部出力機能を有しないパワーコンディショナ(図示せず)の出力電流を計測するための電流センサ12Bが接続される。さらに、センサ接続端子11Cには、燃料電池などの発電設備の出力電流又は負荷機器に流れる電流(消費電流)を計測するための電流センサ12Cが接続される。なお、電流センサ12A〜12Cは従来周知であって、計測対象の電路に流れる電流に比例した検出電流(検出信号)を出力する。   The sensor connection terminal 11B is connected to a current sensor 12B for measuring the output current of a power conditioner (not shown) that does not have an external output function. Furthermore, a current sensor 12C for measuring an output current of a power generation facility such as a fuel cell or a current (consumption current) flowing through a load device is connected to the sensor connection terminal 11C. The current sensors 12A to 12C are well known in the art and output a detection current (detection signal) proportional to the current flowing in the electric circuit to be measured.

電圧入力端子13は、電力線100を介して主幹ブレーカの１次側端子と接続される。つまり、電圧入力端子13には、電力系統から供給される系統電圧並びにパワーコンディショナ２の出力電圧が入力される。   The voltage input terminal 13 is connected to the primary side terminal of the main breaker via the power line 100. That is, the voltage input terminal 13 receives the system voltage supplied from the power system and the output voltage of the power conditioner 2.

通信用端子15は、パワーコンディショナ２の通信線４と接続される。通信部16は、通信用端子15に接続される通信線４を介してパワーコンディショナ２から送信される発電量の計測値データを受信し、受信した計測値データを演算部10に渡す。設定部17は、スライド型のディップスイッチからなる。   The communication terminal 15 is connected to the communication line 4 of the power conditioner 2. The communication unit 16 receives the measurement value data of the power generation amount transmitted from the power conditioner 2 via the communication line 4 connected to the communication terminal 15 and passes the received measurement value data to the calculation unit 10. The setting unit 17 includes a slide type dip switch.

演算部10は、マイクロコントローラやメモリ、Ａ／Ｄ変換器などのハードウェアと、消費電力量及び発電量の演算処理や伝送部14を介した伝送処理、通信部16を介した通信処理などをハードウェアに実行させるソフトウェアとで構成される。なお、各部10〜17に必要な電源は、図示しない電源回路から供給される。この電源回路は、電力系統から給電される交流電力から直流電力を作成して各部10〜17に供給する。   The calculation unit 10 performs operations such as calculation processing of power consumption and power generation amount, transmission processing via the transmission unit 14, communication processing via the communication unit 16, etc., such as hardware such as a microcontroller, memory, and A / D converter. It consists of software that is executed by hardware. The power necessary for each unit 10 to 17 is supplied from a power circuit (not shown). This power supply circuit creates DC power from AC power fed from the power system and supplies it to the units 10 to 17.

伝送部14は、電波を媒体とする無線信号を表示装置３との間で送受信する。故に、伝送部14と表示装置３を伝送路で接続する必要が無いため、省配線化が図れるという利点がある。ただし、伝送部14におけるデータ伝送は電波を媒体とする無線伝送に限定されるものではなく、信号線を介した有線伝送であっても構わない。   The transmission unit 14 transmits and receives a radio signal using radio waves as a medium to and from the display device 3. Therefore, there is no need to connect the transmission unit 14 and the display device 3 through a transmission line, and there is an advantage that wiring can be saved. However, data transmission in the transmission unit 14 is not limited to wireless transmission using radio waves as a medium, and may be wired transmission via a signal line.

表示装置３は、太陽電池の発電量や全体の消費電力量の計測値の伝送要求を無線信号で電力計測装置１に送信する。前記伝送要求が伝送部14で受信されると、演算部10は、当該伝送要求に対応した計測値のデータをメモリから読み出し、読み出した計測値データを含む無線信号を伝送部14から表示装置３へ送信させる。そして、表示装置３は、電力計測装置１から送信される無線信号を受信し、当該無線信号に含まれる計測値データを加工(例えば、グラフ化)して表示デバイスの画面に表示する。   The display device 3 transmits a transmission request for a measurement value of the power generation amount of the solar cell and the total power consumption amount to the power measurement device 1 by a radio signal. When the transmission request is received by the transmission unit 14, the calculation unit 10 reads the measurement value data corresponding to the transmission request from the memory, and transmits the wireless signal including the read measurement value data from the transmission unit 14 to the display device 3. To send to. Then, the display device 3 receives the wireless signal transmitted from the power measuring device 1, processes the measurement value data included in the wireless signal (for example, graphs), and displays it on the screen of the display device.

上述した各部10〜17は、図２に示すように筐体20内に収納される。筐体20は、合成樹脂材料によって縦長の直方体形状に形成され、上面及び下面の後端部分から鉛直方向に突出する取付片21が一体に形成されている。また、筐体20の右側面の上部から直方体形状の突部22が突出しており、ねじ端子からなる電圧入力端子13が突部22の前面に配設されている。ただし、図２では板状の端子カバー130によって電圧入力端子13が前方から覆い隠されている。さらに、筐体20の右側面の下部には、伝送部14が無線信号を送受信するためのアンテナ140が設けられている。   Each part 10-17 mentioned above is accommodated in the housing | casing 20, as shown in FIG. The casing 20 is formed in a vertically long rectangular parallelepiped shape from a synthetic resin material, and an attachment piece 21 protruding in the vertical direction from the rear end portions of the upper surface and the lower surface is integrally formed. Further, a rectangular parallelepiped protrusion 22 protrudes from the upper part of the right side surface of the housing 20, and a voltage input terminal 13 formed of a screw terminal is disposed on the front surface of the protrusion 22. However, in FIG. 2, the voltage input terminal 13 is covered from the front by the plate-like terminal cover 130. Furthermore, an antenna 140 for the transmission unit 14 to transmit and receive radio signals is provided at the lower part of the right side surface of the housing 20.

筐体20の前面における上部に３つのセンサ接続端子11A〜11Cが露出している。これらのセンサ接続端子11A〜11Cには、電流センサ12A〜12Cの出力線120A〜120Cがそれぞれ接続される。また、筐体20前面のセンサ接続端子11A〜11Cの下に設定部17の操作面が露出しており、ドライバなどの工具を用いて、設定部17の設定(ディップスイッチのオン・オフ)が切り替えられる。   Three sensor connection terminals 11 </ b> A to 11 </ b> C are exposed at the upper part of the front surface of the housing 20. The output lines 120A to 120C of the current sensors 12A to 12C are connected to these sensor connection terminals 11A to 11C, respectively. In addition, the operation surface of the setting unit 17 is exposed under the sensor connection terminals 11A to 11C on the front surface of the housing 20, and the setting unit 17 (dip switch on / off) can be set using a tool such as a screwdriver. Can be switched.

さらに、筐体20前面の下部に通信用端子15の電線挿通孔150と解除釦151が設けられている。すなわち、通信用端子15はねじなし端子(速結端子)からなり、一対の通信線４の芯線がそれぞれ電線挿通孔150に挿通されることで端子板(図示せず)と通信線４の芯線が抜け止め状態で電気的に接続される。一方、解除釦151が操作されると、芯線の抜け止め状態が解除され、電線挿通孔150から通信線４を引き抜くことができる。なお、このような速結端子は従来周知であるから、詳細な構造の図示並びに説明を省略する。   Further, a wire insertion hole 150 and a release button 151 for the communication terminal 15 are provided in the lower part of the front surface of the housing 20. That is, the communication terminal 15 is formed of a screwless terminal (rapid connection terminal), and the core wires of the pair of communication wires 4 are respectively inserted into the electric wire insertion holes 150 so that the terminal plate (not shown) and the core wires of the communication wires 4 Are electrically connected in a retaining state. On the other hand, when the release button 151 is operated, the state in which the core wire is prevented from being released is released, and the communication line 4 can be pulled out from the wire insertion hole 150. In addition, since such a quick connection terminal is conventionally well-known, illustration and description of a detailed structure are abbreviate | omitted.

ここで、筐体20はケースに収納されて屋内の壁面などに露出配設又は埋込配設される。このケースは、ボックス30とカバー(図示せず)で構成される。ボックス30は、合成樹脂材料によって前面が開口した矩形箱状に形成されている。ボックス30内には、多数の貫通孔310が設けられた矩形平板状のベース31が配設されている。そして、取付片21に設けられた挿通孔に挿通される取付ねじ32がベース31の貫通孔310にねじ込まれることにより、筐体20がベース31に取り付けられる。なお、図示しないカバーは、後面が開口した矩形箱状に形成され、ボックス30の前面を覆うようにボックス30に固定される。   Here, the housing 20 is housed in a case and exposed or embedded on an indoor wall surface. This case includes a box 30 and a cover (not shown). The box 30 is formed in a rectangular box shape whose front surface is opened by a synthetic resin material. In the box 30, a rectangular flat base 31 having a large number of through holes 310 is disposed. Then, the housing 20 is attached to the base 31 by screwing the attachment screw 32 inserted into the insertion hole provided in the attachment piece 21 into the through hole 310 of the base 31. The cover (not shown) is formed in a rectangular box shape with an open rear surface, and is fixed to the box 30 so as to cover the front surface of the box 30.

次に、本実施形態の電力計測装置１の計測動作を説明する。まず、電力計測の事前準備として、主幹ブレーカの１次側の電圧端子に接続された電路に電流センサ12Aが装着され、電流センサ12Aの出力線120Aが電力計測装置１のセンサ接続端子11Aに接続される。また、電圧入力端子13が電力線100を介して主幹ブレーカの１次側端子に接続される。さらに、計測対象のパワーコンディショナ２が外部出力機能を有する場合、パワーコンディショナ２と通信用端子15が通信線４で接続される。   Next, the measurement operation of the power measurement device 1 of the present embodiment will be described. First, as preparation for power measurement, the current sensor 12A is attached to the electrical circuit connected to the primary voltage terminal of the main breaker, and the output line 120A of the current sensor 12A is connected to the sensor connection terminal 11A of the power measurement device 1. Is done. The voltage input terminal 13 is connected to the primary side terminal of the main breaker via the power line 100. Furthermore, when the power conditioner 2 to be measured has an external output function, the power conditioner 2 and the communication terminal 15 are connected by the communication line 4.

上述のように電力計測装置１とパワーコンディショナ２及び電流センサ12Aとの接続作業が完了した後に電力計測装置１の電源が投入されると、演算部10が初期設定を行う。この初期設定において、演算部10は、設定部17のオン・オフ状態から設定内容を読み取ってメモリに記憶する。   As described above, when the power measuring device 1 is turned on after the connection work between the power measuring device 1 and the power conditioner 2 and the current sensor 12A is completed, the calculation unit 10 performs initial setting. In this initial setting, the arithmetic unit 10 reads the setting content from the on / off state of the setting unit 17 and stores it in the memory.

設定部17がオン状態の場合、センサ接続端子11Cに接続される電流センサ12Cの計測対象が発電設備(例えば、燃料電池)の出力電流に設定される。一方、設定部17がオフ状態の場合、センサ接続端子11Cに接続される電流センサ12Cの計測対象が負荷機器(例えば、ヒートポンプ式給湯機)の消費電流に設定される。以下、設定部17がオン状態の場合を第１演算モード、設定部17がオフ状態の場合を第２演算モードと呼ぶ。   When the setting unit 17 is on, the measurement target of the current sensor 12C connected to the sensor connection terminal 11C is set to the output current of the power generation facility (for example, a fuel cell). On the other hand, when the setting unit 17 is in the off state, the measurement target of the current sensor 12C connected to the sensor connection terminal 11C is set to the current consumption of the load device (for example, a heat pump type hot water heater). Hereinafter, the case where the setting unit 17 is in the on state is referred to as a first calculation mode, and the case where the setting unit 17 is in the off state is referred to as a second calculation mode.

演算部10は、センサ接続端子11Cに入力される検出信号(電流センサ12Cで検出される電流値)と、電圧入力端子13の電圧入力値とから電力量を演算する。そして、設定部17で第１演算モードに設定されていれば、演算部10は、演算した電力量を発電設備の発電量(−符号)としてメモリに記憶する。一方、設定部17で第２演算モードに設定されていれば、演算部10は、演算した電力量を負荷機器の消費電力量(＋符号)としてメモリに記憶する。   The calculation unit 10 calculates the amount of electric power from the detection signal (current value detected by the current sensor 12C) input to the sensor connection terminal 11C and the voltage input value of the voltage input terminal 13. If the setting unit 17 is set to the first calculation mode, the calculation unit 10 stores the calculated power amount in the memory as the power generation amount (-sign) of the power generation facility. On the other hand, if the setting unit 17 is set to the second calculation mode, the calculation unit 10 stores the calculated power amount in the memory as the power consumption amount (+ sign) of the load device.

さらに演算部10は、通信用端子15に外部出力機能を有するパワーコンディショナ２が接続されているか否かを判定し、その判定結果を設定情報としてメモリに記憶する。ここで、通信部16が通信線４を介してパワーコンディショナ２と通信可能であれば、演算部10は通信用端子15にパワーコンディショナ２が接続されていると判定する。一方、通信部16が通信線４を介してパワーコンディショナ２と通信不可であれば、演算部10は通信用端子15にパワーコンディショナ２が接続されていないと判定する。   Further, the calculation unit 10 determines whether or not the power conditioner 2 having an external output function is connected to the communication terminal 15, and stores the determination result in the memory as setting information. If the communication unit 16 can communicate with the power conditioner 2 via the communication line 4, the calculation unit 10 determines that the power conditioner 2 is connected to the communication terminal 15. On the other hand, if the communication unit 16 cannot communicate with the power conditioner 2 via the communication line 4, the calculation unit 10 determines that the power conditioner 2 is not connected to the communication terminal 15.

通信用端子15に外部出力機能を有するパワーコンディショナ２が接続されていると判定した場合、演算部10は、太陽電池の発電量の演算を行わない。つまり、外部出力機能を有するパワーコンディショナ２が太陽電池の発電量の計測値データを定期的(例えば、数秒乃至数分の間隔)に送信してくるので、演算部10は、通信部16が受信する発電量の計測値データをメモリに記憶する。   When it is determined that the power conditioner 2 having an external output function is connected to the communication terminal 15, the calculation unit 10 does not calculate the power generation amount of the solar cell. In other words, the power conditioner 2 having an external output function periodically transmits the measurement value data of the power generation amount of the solar cell (for example, at intervals of several seconds to several minutes). The measurement value data of the power generation amount to be received is stored in the memory.

一方、通信用端子15に外部出力機能を有するパワーコンディショナ２が接続されていないと判定した場合、演算部10は、センサ接続端子11Bに入力される検出信号(電流センサ12Bで検出される電流値)と、電圧入力端子13の電圧入力値とから太陽電池の発電量を演算する。そして、演算部10は、太陽電池の発電量を定期的(例えば、数秒乃至数分の間隔)に演算し、その計測値データをメモリに記憶する。   On the other hand, when it is determined that the power conditioner 2 having an external output function is not connected to the communication terminal 15, the arithmetic unit 10 detects the detection signal (current detected by the current sensor 12B) input to the sensor connection terminal 11B. Value) and the voltage input value of the voltage input terminal 13 to calculate the amount of power generated by the solar cell. Then, the calculation unit 10 periodically calculates the power generation amount of the solar cell (for example, at intervals of several seconds to several minutes), and stores the measured value data in the memory.

上述したように、演算部10は、表示装置３の伝送要求に応じた計測値データ(全体の消費電力量、太陽電池の発電量、センサ接続端子11Cの計測対象の電力量の各計測値データ)をメモリから読み出し、読み出した計測値データを含む無線信号を伝送部14から送信させる。ここで、演算部10は、メモリから読み出した電力量の計測値データが全体の消費電力量、太陽電池の発電量、負荷機器の消費電力量又は発電設備の発電量の何れであるかを示す情報とともに当該計測値データを伝送部14から表示装置３へ送信させる。   As described above, the calculation unit 10 measures the measurement value data corresponding to the transmission request of the display device 3 (total measurement power data of the total power consumption, the power generation amount of the solar cell, and the power consumption of the measurement target of the sensor connection terminal 11C. ) Is read from the memory, and a wireless signal including the read measurement value data is transmitted from the transmission unit 14. Here, the calculation unit 10 indicates whether the measurement value data of the electric energy read from the memory is the total electric energy consumption, the power generation amount of the solar battery, the power consumption amount of the load device, or the power generation amount of the power generation facility. The measurement value data is transmitted to the display device 3 from the transmission unit 14 together with the information.

したがって、表示装置３では、前記情報に基づき、電力計測装置１から受け取る電力量の計測値データが、それぞれ全体の消費電力量、太陽電池の発電量、負荷機器の消費電力量又は発電設備の発電量の何れであるかを識別して表示することができる。   Therefore, in the display device 3, based on the information, the measured value data of the amount of power received from the power measuring device 1 is the total power consumption amount, the power generation amount of the solar cell, the power consumption amount of the load device, or the power generation of the power generation facility. The quantity can be identified and displayed.

上述のように本実施形態の電力計測装置１では、演算部10が、設定部17で設定されるモードが第１演算モードであれば発電設備の発電量を演算し、設定部17で設定されるモードが第２演算モードであれば負荷機器の消費電力量を演算する。そのため、負荷機器の消費電力量と発電設備の発電量を択一的に計測可能として使い勝手の向上を図ることができる。   As described above, in the power measuring device 1 of the present embodiment, the calculation unit 10 calculates the power generation amount of the power generation facility if the mode set by the setting unit 17 is the first calculation mode, and is set by the setting unit 17. If the mode is the second calculation mode, the power consumption of the load device is calculated. Therefore, it is possible to improve the usability by selectively measuring the power consumption amount of the load device and the power generation amount of the power generation facility.

１ 電力計測装置
２ パワーコンディショナ(発電設備)
３ 表示装置(外部機器)
10 演算部
11C センサ接続端子
12C 電流センサ
14 伝送部
17 設定部 1 Power measurement device 2 Power conditioner (power generation equipment)
3. Display device (external device)
10 Calculation unit
11C Sensor connection terminal
12C current sensor
14 Transmitter
17 Setting section

Claims (3)

それぞれに電流センサが接続される複数のセンサ接続端子と、前記センサ接続端子に接続された前記電流センサの計測値を用いて電力量の計測値を演算する演算部と、前記演算部で演算される前記電力量の計測値を外部機器に伝送する伝送部と、前記演算部に対して、発電量を演算する第１演算モードと消費電力量を演算する第２演算モードの何れか一方のモードを択一的に設定する設定部とを備え、前記演算部は、複数の前記センサ接続端子のうちの少なくとも１つのセンサ接続端子に接続される前記電流センサの計測値を用いて電力量を演算する場合、前記設定部で設定されるモードが前記第１演算モードであれば発電量を演算し、前記設定部で設定されるモードが前記第２演算モードであれば消費電力量を演算することを特徴とする電力計測装置。   A plurality of sensor connection terminals each connected to a current sensor, a calculation unit that calculates a measurement value of electric energy using a measurement value of the current sensor connected to the sensor connection terminal, and a calculation unit that calculates One of a transmission unit that transmits the measured value of the electric energy to an external device, a first calculation mode that calculates the amount of power generation, and a second calculation mode that calculates the amount of power consumption for the calculation unit A setting unit that alternatively sets the power, and the calculation unit calculates a power amount using a measurement value of the current sensor connected to at least one of the plurality of sensor connection terminals. If the mode set by the setting unit is the first calculation mode, the power generation amount is calculated, and if the mode set by the setting unit is the second calculation mode, the power consumption is calculated. Electric features Measuring device. 商用の電力系統から供給される電流を計測するための電流センサが接続される前記センサ接続端子を備え、前記演算部は、前記センサ接続端子に接続された前記電流センサの計測値を用いて前記電力系統から供給される電力量の計測値を演算し、前記伝送部は、前記演算部で演算される前記電力量の計測値を前記外部機器に伝送することを特徴とする請求項１記載の電力計測装置。   The sensor connection terminal is connected to a current sensor for measuring a current supplied from a commercial power system, and the calculation unit uses the measurement value of the current sensor connected to the sensor connection terminal. The measured value of the electric energy supplied from an electric power system is calculated, The said transmission part transmits the measured value of the said electric energy calculated by the said calculating part to the said external apparatus. Power measuring device. 前記伝送部は、電波を媒体とする無線信号によって前記計測値を前記外部機器に伝送することを特徴とする請求項１又は２記載の電力計測装置。   The power measurement device according to claim 1, wherein the transmission unit transmits the measurement value to the external device by a radio signal using radio waves as a medium.
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