JP2017017794A - Power distribution line abnormality monitoring system - Google Patents

Power distribution line abnormality monitoring system Download PDF

Info

Publication number
JP2017017794A
JP2017017794A JP2015129656A JP2015129656A JP2017017794A JP 2017017794 A JP2017017794 A JP 2017017794A JP 2015129656 A JP2015129656 A JP 2015129656A JP 2015129656 A JP2015129656 A JP 2015129656A JP 2017017794 A JP2017017794 A JP 2017017794A
Authority
JP
Japan
Prior art keywords
distribution line
abnormality
smart meter
monitoring system
sensor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP2015129656A
Other languages
Japanese (ja)
Other versions
JP6494448B2 (en
Inventor
鈴木 宏
Hiroshi Suzuki
宏 鈴木
昌幸 松尾
Masayuki Matsuo
昌幸 松尾
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nitto Kogyo Co Ltd
Original Assignee
Nitto Kogyo Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nitto Kogyo Co Ltd filed Critical Nitto Kogyo Co Ltd
Priority to JP2015129656A priority Critical patent/JP6494448B2/en
Publication of JP2017017794A publication Critical patent/JP2017017794A/en
Application granted granted Critical
Publication of JP6494448B2 publication Critical patent/JP6494448B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Landscapes

  • Locating Faults (AREA)
  • Remote Monitoring And Control Of Power-Distribution Networks (AREA)
  • Distribution Board (AREA)
  • Selective Calling Equipment (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a power distribution line abnormality monitoring system capable of monitoring abnormality of a power distribution line from a power supply lead-in position to a power distribution panel.SOLUTION: A power distribution line abnormality monitoring system 10 comprises: a smart meter 20 for measuring electric energy supplied from a pole transformer through a lead-in line; a power distribution panel 30 including a trunk breaker 31 connecting with the smart meter through a power distribution line 11; a sensor 36 that measures voltage and current flowing in the trunk breaker; and an abnormality determination unit 35 that, on the basis of a difference between a primary measurement value obtained by the smart meter's measurement and a secondary measurement value obtained by the sensor's measurement, determines abnormality of the power distribution line.SELECTED DRAWING: Figure 1

Description

本発明は、商用系統からの電力の供給を受ける配電線の異常を監視する配電線異常監視システムに関する。   The present invention relates to a distribution line abnormality monitoring system that monitors an abnormality of a distribution line that receives power supplied from a commercial system.

通常、商用系統から一般家屋への電力の供給は、柱上トランスから家屋の外壁等に設けられる電力量メータに引き込まれる引き込み線と、電力量メータから分電盤等に配線される主幹配線とを介して行われている。家屋等の分電盤には、回路における過負荷や短絡によって過電流が流れた場合に自動的に回路を遮断する主幹ブレーカや分岐ブレーカが設けられている。また、分電盤には、回路の漏電を監視する漏電ブレーカが設けられ、漏電が発生した場合に回路を自動的に遮断する等の安全監視機能が備えられている。   Normally, the supply of power from the commercial system to the general house consists of a lead-in wire drawn from the pole transformer to a power meter installed on the outer wall of the house, and a main wiring wired from the power meter to a distribution board, etc. Is done through. A distribution board such as a house is provided with a main breaker or a branch breaker that automatically shuts off the circuit when an overcurrent flows due to an overload or short circuit in the circuit. In addition, the distribution board is provided with a leakage breaker that monitors circuit leakage, and is provided with a safety monitoring function such as automatically shutting off the circuit when a leakage occurs.

特開2013−225967号公報JP 2013-225967 A

従来の漏電ブレーカを備えた分電盤の安全監視システムでは、分電盤の上流側、すなわち家屋内へ電源の引き込み箇所から分電盤までの配電線(主幹配線)の異常を監視する機能を有していなかった。特に外壁から家屋内部につながる配電線の損傷は、壁を壊さない限り目視検査をすることができない。そのため、たとえば経年劣化やねずみ等の小動物に齧られたりする等の損傷が放置されがちであった。
そのような壁内部の配電線の異常が放置されると、漏電個所からの出火により火災等の事故につながるおそれがある。また、近年、ある家屋における単相三線電圧のアンバランスや中性線欠相等の原因が、当該家屋と同一の柱上トランスから電力の供給を受けていた他の家屋の配電線の異常によるものである事例も報告されている。
A conventional distribution board safety monitoring system equipped with an earth leakage breaker has a function to monitor abnormalities in the distribution line (main wiring) from the location where the power is drawn into the upstream of the distribution panel, that is, the house. Did not have. In particular, damage to the distribution line leading from the outer wall to the interior of the house cannot be visually inspected unless the wall is broken. For this reason, for example, damages such as aging and rats being beaten by small animals tend to be left unattended.
If such abnormalities in the distribution lines inside the wall are left unattended, there is a risk of fire and other accidents due to a fire from the leakage point. Also, in recent years, the cause of unbalanced single-phase three-wire voltage in one house or a phase failure in the neutral line is due to an abnormality in the distribution line of another house that was supplied with power from the same pole transformer as that house. Some cases have been reported.

そこで、本発明は、家屋内への電源の引き込み箇所から分電盤までの配電線の異常を監視することができる、配電線異常監視システムを提供することを目的としている。   Then, this invention aims at providing the distribution line abnormality monitoring system which can monitor the abnormality of the distribution line from the drawing-in place of the power supply to a house to a distribution board.

上記課題を解決するため、本発明は、柱上トランスから引き込み線を介して供給される電力量を計測するスマートメータと、該スマートメータに配電線を介して接続する主幹ブレーカを有する分電盤と、前記主幹ブレーカを流れる電流または電圧を計測するセンサと、前記スマートメータが計測する計測値および前記センサが計測する計測値の差分に基づいて前記配電線の異常を判定する異常判定手段と、を備えた配電線異常監視システムである。   In order to solve the above-described problems, the present invention provides a distribution board having a smart meter for measuring the amount of power supplied from a pole transformer via a lead-in line, and a main breaker connected to the smart meter via a distribution line. A sensor that measures a current or voltage flowing through the main breaker, an abnormality determination unit that determines an abnormality of the distribution line based on a difference between a measurement value measured by the smart meter and a measurement value measured by the sensor; It is a distribution line abnormality monitoring system provided with.

上記構成において、前記異常判定手段は、前記差分を時間積分した積分値が所定値以上となったときに前記配電線が異常であると判定することが好ましい。   The said structure WHEREIN: It is preferable that the said abnormality determination means determines that the said distribution line is abnormal when the integral value which time-integrated the said difference becomes more than predetermined value.

また、前記異常判定手段は、前記スマートメータが計測する一次電流値および前記センサが計測する二次電流値の差分に基づいて、前記配電線の異常を判定するものでもよい。   The abnormality determination unit may determine abnormality of the distribution line based on a difference between a primary current value measured by the smart meter and a secondary current value measured by the sensor.

また、前記異常判定手段は、前記スマートメータが計測する一次電圧値および前記センサが計測する二次電圧値の差分に基づいて、前記配電線の異常を判定するものでもよい。   The abnormality determination means may determine abnormality of the distribution line based on a difference between a primary voltage value measured by the smart meter and a secondary voltage value measured by the sensor.

また、前記異常判定手段は、前記スマートメータが計測する一次電力量値および前記センサの計測値から得られる二次電力量値の差分に基づいて、前記配電線の異常を判定するものでもよい。   The abnormality determination unit may determine abnormality of the distribution line based on a difference between a primary power amount value measured by the smart meter and a secondary power amount value obtained from a measured value of the sensor.

本発明によれば、家屋内への電源の引き込み箇所から分電盤までの配電線の状態を監視し、異常を迅速かつ確実に判定することができる。   ADVANTAGE OF THE INVENTION According to this invention, the state of the power distribution line from the location where the power supply is drawn in to a house to a distribution board can be monitored, and abnormality can be determined quickly and reliably.

第1の実施形態による配電線異常監視システムのブロック図である。It is a block diagram of the distribution line abnormality monitoring system by a 1st embodiment. スマートメータの実施形態を示すブロック図である。It is a block diagram which shows embodiment of a smart meter. センサの実施形態を示す回路図である。It is a circuit diagram showing an embodiment of a sensor. 第2の実施形態による配電線異常監視システムのブロック図である。It is a block diagram of the distribution line abnormality monitoring system by 2nd Embodiment. 第3の実施形態による配電線異常監視システムのブロック図である。It is a block diagram of the distribution line abnormality monitoring system by 3rd Embodiment.

(第1の実施形態)
図1は、本発明の第1の実施形態による配電線異常監視システムの構成を模式的に示すブロック図である。なお、ここでは、一般家屋向けの配電線異常監視システムの実施形態を説明する。ただし、たとえば、より大電力を消費する生産工場等の設備装置に電力を分配する配電盤や分電盤を備えるシステムに本発明を適用することもできる。
(First embodiment)
FIG. 1 is a block diagram schematically showing the configuration of a distribution line abnormality monitoring system according to the first embodiment of the present invention. Here, an embodiment of a distribution line abnormality monitoring system for general houses will be described. However, for example, the present invention can be applied to a system including a switchboard and a distribution board that distributes power to equipment such as a production factory that consumes a larger amount of power.

配電線異常監視システム10は、柱上トランスTRから家屋内に引き込まれる引き込み線Lに接続するスマートメータ20と、スマートメータ20に配電線(主幹配線)11を介して接続する分電盤30とを備えている。   The distribution line abnormality monitoring system 10 includes a smart meter 20 connected to a lead-in line L drawn into the house from the pole transformer TR, and a distribution board 30 connected to the smart meter 20 via a distribution line (main wiring) 11. It has.

スマートメータ20は、図2に示すように、電力計ユニット21と、負荷開閉ユニット22と、通信ユニット23とが、それぞれの機能ごとに、たとえば三段に組み込まれた構造を有している。電力計ユニット21は、柱上トランスTR(図1参照)から供給される商用系統の電力量(買電電力量)を計測するユニットである。なお、電力計ユニット21により検出された1日分または複数日分の電力量等の推移データ(モニタリング情報)が、スマートメータ20に内蔵されるメモリに記録される構成であってもよい。   As shown in FIG. 2, the smart meter 20 has a structure in which a power meter unit 21, a load switching unit 22, and a communication unit 23 are incorporated in, for example, three stages for each function. The wattmeter unit 21 is a unit that measures the amount of electric power (the amount of electric power purchased) of the commercial system supplied from the pole transformer TR (see FIG. 1). The transition data (monitoring information) such as the amount of power for one day or a plurality of days detected by the wattmeter unit 21 may be recorded in a memory built in the smart meter 20.

負荷開閉ユニット22は、分電盤30の主幹ブレーカ31に接続する電力ラインの開閉機能を有している。通信ユニット23は、インターネット等の広域情報ネットワークに接続されており、使用電力量の推移等のモニタリング情報を、電気事業者や利用者の情報端末装置等に送信することができる。   The load switching unit 22 has a function of opening and closing a power line connected to the main breaker 31 of the distribution board 30. The communication unit 23 is connected to a wide area information network such as the Internet, and can transmit monitoring information such as a change in power consumption to an information terminal device of an electric power company or a user.

また、たとえば1日分のモニタリング情報をスマートメータ20内のメモリに記録しておき、たとえば1日1回など定期的に外部に送信するようにしてもよい。また、スマートメータ20は、通信ユニット23を介して、電気事業者からの電力需要予測情報や外部の情報サービスプロバイダからの有益な情報をタイムリーに受信することもできる。このように、スマートメータ20から広域情報ネットワークを介して外部のサーバや装置等に情報データを伝送するルートは、一般に「Aルート」と称されている。   Further, for example, monitoring information for one day may be recorded in a memory in the smart meter 20, and may be transmitted to the outside periodically, for example, once a day. In addition, the smart meter 20 can also receive, in a timely manner, power demand prediction information from an electric power company and useful information from an external information service provider via the communication unit 23. In this way, a route for transmitting information data from the smart meter 20 to an external server or device via a wide area information network is generally referred to as an “A route”.

スマートメータ20がAルートから受信したこれらの情報は、たとえば後述するHEMS(Home Energy Management System)コントローラ25に送信され、負荷機器の需要電力制御等に利用される。   These pieces of information received by the smart meter 20 from the A route are transmitted to, for example, a HEMS (Home Energy Management System) controller 25, which will be described later, and used for power demand control of a load device.

また、本実施形態による配電線異常監視システムにおいては、スマートメータ20の電力計ユニット21が監視する一次電流値Ib、一次電圧値Vbおよびこれらの値から演算される一次電力量値Pb等のモニタリング情報が、通信ユニット23により、随時、異常判定部35に送信されている。このように、スマートメータ20から家屋内のコントローラ、機器、情報端末装置等に情報データを伝送するルートは、一般に「Bルート」と称されている。ここで、Bルートは、有線・無線LANまたはUSB等を採用できるが、その情報伝送形式に限定されるものではない。   In the distribution line abnormality monitoring system according to the present embodiment, the primary current value Ib, the primary voltage value Vb monitored by the power meter unit 21 of the smart meter 20 and the primary power amount value Pb calculated from these values are monitored. Information is transmitted to the abnormality determination unit 35 at any time by the communication unit 23. As described above, a route for transmitting information data from the smart meter 20 to a controller, device, information terminal device, or the like in the house is generally referred to as “B route”. Here, the B route can employ a wired / wireless LAN or USB, but is not limited to the information transmission format.

家屋内に配置される分電盤30は、主幹ブレーカ31および複数の分岐ブレーカ33等の機器・装置を含み、これらがケース内の基盤に実装されている。主幹ブレーカ31および分岐ブレーカ33は、負荷装置(下流)側回路の過負荷や短絡によって過電流が流れた場合に自動的に回路を遮断する装置である。また、主幹ブレーカ31は、負荷装置(下流)側回路の漏電を監視し、漏電が発生した場合に回路を自動的に遮断する、漏電ブレーカとしての機能も有する。   The distribution board 30 disposed in the house includes devices / devices such as a main breaker 31 and a plurality of branch breakers 33, and these are mounted on a base in the case. The main breaker 31 and the branch breaker 33 are devices that automatically shut off the circuit when an overcurrent flows due to an overload or short circuit of a load device (downstream) circuit. The main breaker 31 also has a function as a leakage breaker that monitors the leakage of the load device (downstream) side circuit and automatically shuts off the circuit when the leakage occurs.

また、本実施形態による分電盤30は、異常判定部35を備えている。主幹ブレーカ31の出力である二次電流値Ioおよび二次電圧値Voは、変流器等を備えるセンサ36により計測され、それぞれの計測値が異常判定部35に入力される。ここで、図3には、センサ36の回路例が示される。   In addition, the distribution board 30 according to the present embodiment includes an abnormality determination unit 35. The secondary current value Io and the secondary voltage value Vo, which are outputs of the main breaker 31, are measured by the sensor 36 including a current transformer and the like, and each measured value is input to the abnormality determination unit 35. Here, FIG. 3 shows a circuit example of the sensor 36.

また、異常判定部35は、センサ36が計測した二次電流値Ioおよび二次電圧値Voから、分電盤30を経由する電力量(二次電力量値Po)を演算することができる。つまり、本実施形態による配電線異常監視システムにおいては、柱上トランスTRからの配電線の引き込み部(具体例としてはスマートメータ20)において計測される一次計測値と、分電盤30(具体例としては主幹ブレーカ31)において計測される二次計測値とが、異常判定部35にそれぞれ入力するよう構成されている。   Further, the abnormality determination unit 35 can calculate the amount of electric power (secondary electric energy value Po) passing through the distribution board 30 from the secondary current value Io and the secondary voltage value Vo measured by the sensor 36. In other words, in the distribution line abnormality monitoring system according to the present embodiment, the primary measurement value measured by the distribution line drawing section (specifically, the smart meter 20) from the pole transformer TR and the distribution board 30 (specific example). The secondary measurement values measured by the main breaker 31) are input to the abnormality determination unit 35, respectively.

異常判定部35は、引き込み部に設けたスマートメータ20によるモニタリング情報である一次計測値と、センサ36が計測した分電盤30の出力情報である二次計測値との差分に基づいて、従来監視することが困難であった、壁内部の配電線(主幹配線)11の状態を監視して、その異常を早期に判定することができる。   The abnormality determination unit 35 is based on the difference between the primary measurement value that is monitoring information by the smart meter 20 provided in the pull-in unit and the secondary measurement value that is output information of the distribution board 30 measured by the sensor 36. The state of the distribution line (main wiring) 11 inside the wall, which is difficult to monitor, can be monitored to determine the abnormality at an early stage.

具体的には、たとえば異常判定部35は、スマートメータ20が計測する一次電流値Ibと、センサ36が計測する二次電流値Ioとの差分が所定値以上となったときに、これらの間の配電線11が異常であると判定することができる。   Specifically, for example, when the difference between the primary current value Ib measured by the smart meter 20 and the secondary current value Io measured by the sensor 36 is equal to or greater than a predetermined value, the abnormality determination unit 35 It can be determined that the distribution line 11 is abnormal.

また、異常判定部35は、スマートメータ20が計測する一次電圧値Vbと、センサ36が計測する二次電圧値Voとの差分が所定値以上となったときに、これらの間の配電線11が異常であると判定することができる。   Further, when the difference between the primary voltage value Vb measured by the smart meter 20 and the secondary voltage value Vo measured by the sensor 36 is equal to or greater than a predetermined value, the abnormality determination unit 35 distributes the distribution line 11 between them. Can be determined to be abnormal.

また、異常判定部35は、スマートメータ20が計測する一次電力量値Pbと、センサ36の計測値から演算した二次電力量値Poとの差分が所定値以上となったときに、これらの間の配電線11が異常であると判定することができる。   Further, when the difference between the primary power amount value Pb measured by the smart meter 20 and the secondary power amount value Po calculated from the measured value of the sensor 36 becomes equal to or greater than a predetermined value, the abnormality determination unit 35 It can be determined that the distribution line 11 between them is abnormal.

なお、電源系統を構成する配電線11や主幹ブレーカ31等は、僅かではあるがインダクタンスや浮遊容量等といった虚数部を含むインピーダンスを本来有している。50〜60Hz程度の商用周波数の交流が回路を流れる限りにおいては、これら配電線11のインピーダンスの影響は殆ど無視することができる。しかし、回路に負荷集中による瞬時的な電圧降下や電圧変動が発生すると、配電線11に損傷や漏電等の異常がなくても、その配電線11の両端部で電圧や電流に差分(誤差)が生じる場合もあり得る。また、本システムでは、Bルートの伝送レートの遅延とセンサ36が二次計測値の検出時間の差によっても、配電線11の両端部で誤差が生じる場合も想定される。   Note that the distribution line 11 and the main breaker 31 constituting the power supply system inherently have an impedance including an imaginary part such as an inductance and a stray capacitance, although they are small. As long as an alternating current with a commercial frequency of about 50 to 60 Hz flows through the circuit, the influence of the impedance of these distribution lines 11 can be almost ignored. However, if an instantaneous voltage drop or voltage fluctuation occurs due to load concentration in the circuit, even if there is no abnormality such as damage or leakage in the distribution line 11, there is a difference (error) in voltage or current at both ends of the distribution line 11. May occur. Moreover, in this system, the case where an error arises in the both ends of the distribution line 11 also by the difference of the transmission rate delay of B route and the detection time of the secondary measurement value of the sensor 36 is assumed.

そのような瞬時的な電圧変動等による誤判定を防ぐために、異常判定部35は、スマートメータ20による一次計測値と、センサ36による二次計測値との間の差分を一定時間積分し、その積分値が所定値以上となったときに配電線11が異常であると判定するようにしてもよい。また、そのような誤判定を防ぐ変形例として、異常判定部35は、センサ36が計測した二次計測値を一定時間積分し、その積分値と一次計測値との差分が所定値以上となったときに配電線11が異常であると判定するようにしてもよい。   In order to prevent such erroneous determination due to instantaneous voltage fluctuations, the abnormality determination unit 35 integrates the difference between the primary measurement value by the smart meter 20 and the secondary measurement value by the sensor 36 for a certain period of time, You may make it determine with the distribution line 11 being abnormal when an integral value becomes more than predetermined value. As a modified example for preventing such erroneous determination, the abnormality determination unit 35 integrates the secondary measurement value measured by the sensor 36 for a certain time, and the difference between the integration value and the primary measurement value becomes a predetermined value or more. It may be determined that the distribution line 11 is abnormal.

また、異常判定部35は、一次計測値と二次計測値との差分を一定時間サンプリングし、その時間平均とばらつき等の分布を求める統計処理を行ってもよい。たとえば、異常判定部35は、一次計測値と二次計測値との差分が、一定期間過去において所定数サンプリングした差分に基づく標準偏差(たとえばσ、σ2、・・・)を超えるときに、配電線11が異常であると判定するようにしてもよい。   Moreover, the abnormality determination part 35 may sample the difference of a primary measurement value and a secondary measurement value for a fixed time, and may perform the statistical process which calculates | requires distribution, such as the time average and dispersion | variation. For example, when the difference between the primary measurement value and the secondary measurement value exceeds a standard deviation (for example, σ, σ2,...) Based on a difference sampled a predetermined number in the past for a certain period, You may make it determine with the electric wire 11 being abnormal.

これらの対策の他に、センサ36の出力側にローパスフィルタを設け、Bルートを介して得たモニタリング情報の一次計測値と、ローパスフィルタを経て得た二次計測値との差分に基づいて、配電線11の異常を監視するようにしてもよい。   In addition to these measures, a low pass filter is provided on the output side of the sensor 36, and based on the difference between the primary measurement value of the monitoring information obtained through the B route and the secondary measurement value obtained through the low pass filter, You may make it monitor the abnormality of the distribution line 11. FIG.

(第2の実施形態)
図4は、本発明の第2の実施形態による配電線異常監視システムの構成を示すブロック図である。この実施形態では、スマートメータ20が計測するモニタリング情報が、Bルートを介してHEMSコントローラ25に入力される。異常判定部35は、コントローラ25から得た一次計測値と、センサ36が計測した二次計測値との差分に基づいて、配電線11の異常を判定するようにしてもよい。
(Second Embodiment)
FIG. 4 is a block diagram showing a configuration of a distribution line abnormality monitoring system according to the second embodiment of the present invention. In this embodiment, monitoring information measured by the smart meter 20 is input to the HEMS controller 25 via the B route. The abnormality determination unit 35 may determine the abnormality of the distribution line 11 based on the difference between the primary measurement value obtained from the controller 25 and the secondary measurement value measured by the sensor 36.

(第3の実施形態)
図5は、本発明の第3の実施形態による配電線異常監視システムの構成を示すブロック図である。この実施形態では、スマートメータ20が計測するモニタリング情報が、Bルートを介してHEMSコントローラ25に入力される。コントローラ25に設けられる異常判定部35が、スマートメータ20から得た一次計測値とセンサ36が計測した二次計測値との差分に基づいて配電線11の状態を監視し、その異常を判定するようにしてもよい。
(Third embodiment)
FIG. 5 is a block diagram showing a configuration of a distribution line abnormality monitoring system according to the third embodiment of the present invention. In this embodiment, monitoring information measured by the smart meter 20 is input to the HEMS controller 25 via the B route. An abnormality determination unit 35 provided in the controller 25 monitors the state of the distribution line 11 based on the difference between the primary measurement value obtained from the smart meter 20 and the secondary measurement value measured by the sensor 36, and determines the abnormality. You may do it.

10 配電線異常監視システム
11 配電線(主幹配線)
20 スマートメータ
21 電力計ユニット
22 負荷開閉ユニット
23 通信ユニット
25 HEMSコントローラ
30 分電盤
31 主幹ブレーカ
33 分岐ブレーカ
35 異常判定部
L 引き込み線
TR 柱上トランス
10 Distribution line abnormality monitoring system 11 Distribution line (main wiring)
20 Smart Meter 21 Power Meter Unit 22 Load Switching Unit 23 Communication Unit 25 HEMS Controller 30 Distribution Board 31 Main Breaker 33 Branch Breaker 35 Abnormality Determination Unit L Lead-in Line TR Pillar Transformer

Claims (5)

柱上トランスから引き込み線を介して供給される電力量を計測するスマートメータと、
該スマートメータに配電線を介して接続する主幹ブレーカを有する分電盤と、
前記主幹ブレーカを流れる電流または電圧を計測するセンサと、
前記スマートメータが計測する計測値および前記センサが計測する計測値の差分に基づいて前記配電線の異常を判定する異常判定手段と、
を備えた配電線異常監視システム。
A smart meter that measures the amount of power supplied from the pole transformer via the lead-in line;
A distribution board having a main breaker connected to the smart meter via a distribution line;
A sensor for measuring a current or voltage flowing through the main breaker;
An abnormality determining means for determining an abnormality of the distribution line based on a difference between a measured value measured by the smart meter and a measured value measured by the sensor;
Distribution line abnormality monitoring system equipped with.
前記異常判定手段は、前記差分を時間積分した積分値が所定値以上となったときに前記配電線が異常であると判定する、請求項1に記載の配電線異常監視システム。   The distribution line abnormality monitoring system according to claim 1, wherein the abnormality determination unit determines that the distribution line is abnormal when an integral value obtained by time-integrating the difference becomes a predetermined value or more. 前記異常判定手段は、前記スマートメータが計測する一次電流値および前記センサが計測する二次電流値の差分に基づいて、前記配電線の異常を判定する請求項1または2に記載の配電線異常監視システム。   The distribution line abnormality according to claim 1 or 2, wherein the abnormality determination unit determines an abnormality of the distribution line based on a difference between a primary current value measured by the smart meter and a secondary current value measured by the sensor. Monitoring system. 前記異常判定手段は、前記スマートメータが計測する一次電圧値および前記センサが計測する二次電圧値の差分に基づいて、前記配電線の異常を判定する請求項1または2に記載の配電線異常監視システム。   The distribution line abnormality according to claim 1 or 2, wherein the abnormality determination means determines an abnormality of the distribution line based on a difference between a primary voltage value measured by the smart meter and a secondary voltage value measured by the sensor. Monitoring system. 前記異常判定手段は、前記スマートメータが計測する一次電力量値および前記センサの計測値から得られる二次電力量値の差分に基づいて、前記配電線の異常を判定する請求項1または2に記載の配電線異常監視システム。   The abnormality determination unit determines abnormality of the distribution line based on a difference between a primary power amount value measured by the smart meter and a secondary power amount value obtained from a measured value of the sensor. The distribution line abnormality monitoring system described.
JP2015129656A 2015-06-29 2015-06-29 Distribution line abnormality monitoring system Active JP6494448B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2015129656A JP6494448B2 (en) 2015-06-29 2015-06-29 Distribution line abnormality monitoring system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2015129656A JP6494448B2 (en) 2015-06-29 2015-06-29 Distribution line abnormality monitoring system

Publications (2)

Publication Number Publication Date
JP2017017794A true JP2017017794A (en) 2017-01-19
JP6494448B2 JP6494448B2 (en) 2019-04-03

Family

ID=57831398

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2015129656A Active JP6494448B2 (en) 2015-06-29 2015-06-29 Distribution line abnormality monitoring system

Country Status (1)

Country Link
JP (1) JP6494448B2 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107153151A (en) * 2017-07-03 2017-09-12 湖南华烨智能通信技术股份有限公司 Low voltage electric network subscribers' line power down quick response to faults method and system
JP2018204972A (en) * 2017-05-30 2018-12-27 関西電力株式会社 Continuity checker
JP2020182311A (en) * 2019-04-25 2020-11-05 東京瓦斯株式会社 Abnormality detection system and abnormality detection method
CN112703744A (en) * 2018-11-08 2021-04-23 中国电力株式会社 Information processing apparatus and abnormality visualization system
JP2021158857A (en) * 2020-03-27 2021-10-07 東京瓦斯株式会社 Power monitoring controller and power monitoring control program

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004340767A (en) * 2003-05-16 2004-12-02 Hitachi Ltd Electric power transaction method and electric power transaction system prevented in stealing electricity
JP2012189539A (en) * 2011-03-14 2012-10-04 Chugoku Electric Power Co Inc:The Insulation measuring system
WO2013168415A1 (en) * 2012-05-11 2013-11-14 パナソニック株式会社 Management device and management system
JP2014191454A (en) * 2013-03-26 2014-10-06 Aysya Power Co Ltd Electric power charge computing device and electric power charge computing program
US20140362486A1 (en) * 2013-06-11 2014-12-11 Electrical Materials Company Low fault current isolator system

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004340767A (en) * 2003-05-16 2004-12-02 Hitachi Ltd Electric power transaction method and electric power transaction system prevented in stealing electricity
JP2012189539A (en) * 2011-03-14 2012-10-04 Chugoku Electric Power Co Inc:The Insulation measuring system
WO2013168415A1 (en) * 2012-05-11 2013-11-14 パナソニック株式会社 Management device and management system
JP2014191454A (en) * 2013-03-26 2014-10-06 Aysya Power Co Ltd Electric power charge computing device and electric power charge computing program
US20140362486A1 (en) * 2013-06-11 2014-12-11 Electrical Materials Company Low fault current isolator system

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2018204972A (en) * 2017-05-30 2018-12-27 関西電力株式会社 Continuity checker
CN107153151A (en) * 2017-07-03 2017-09-12 湖南华烨智能通信技术股份有限公司 Low voltage electric network subscribers' line power down quick response to faults method and system
CN112703744A (en) * 2018-11-08 2021-04-23 中国电力株式会社 Information processing apparatus and abnormality visualization system
CN112703744B (en) * 2018-11-08 2023-12-29 中国电力株式会社 Information processing apparatus and abnormality visualization system
JP2020182311A (en) * 2019-04-25 2020-11-05 東京瓦斯株式会社 Abnormality detection system and abnormality detection method
JP7229089B2 (en) 2019-04-25 2023-02-27 東京瓦斯株式会社 Anomaly detection system and anomaly detection method
JP2021158857A (en) * 2020-03-27 2021-10-07 東京瓦斯株式会社 Power monitoring controller and power monitoring control program
JP7379250B2 (en) 2020-03-27 2023-11-14 東京瓦斯株式会社 Power monitoring and control device, power monitoring and control program

Also Published As

Publication number Publication date
JP6494448B2 (en) 2019-04-03

Similar Documents

Publication Publication Date Title
US20230164568A1 (en) Communication enabled circuit breakers
JP6494448B2 (en) Distribution line abnormality monitoring system
JP6355217B2 (en) Wireless branch circuit energy monitoring system
US8779776B2 (en) Power supply monitoring system
US8566047B2 (en) Electrical anomaly detection method and system
KR101220773B1 (en) Intelligent Cabinet-Panel Having Energy Managing Function in the Smart Grid Environment
US10811876B2 (en) Disconnect switch status in a power distribution system
US11218023B2 (en) Recloser control fast open circuit detection
US11187750B2 (en) Method for detecting the state of an electrical protection appliance in an electrical installation and detection device implementing said method
JP2012105463A (en) Failure determination system
CN111157939A (en) Live monitoring device and method for metering performance of voltage transformer
US10033194B2 (en) Intelligent electrical power network device
JP6509029B2 (en) Distribution board
KR20200089473A (en) power distribution board for household
JP2017123705A (en) Distribution board monitoring system, distribution board, and distribution board monitoring device that can be installed in them
US20190229553A1 (en) System and method of remote bridging a utility meter
JP2018021826A (en) Measurement device, measurement system and computer system
JP2020057536A (en) Circuit breaker, and test method of circuit breaker
KR20140086279A (en) rcabinet panel emote monitoring DC-DC
KR101442178B1 (en) A Distributing Board System having Malfunction Diagnosing Function
RU127959U1 (en) COMBINED AUTOMATION SYSTEM REDUCED VOLTAGE REDUCTION ON SUBSTATION TIRES AND TRANSFORMER OVERLOAD RESTRICTIONS
JP5914854B2 (en) Management device and management system
JP2021100355A (en) Leakage detection system, automatic maintenance and inspection system, and leakage detection method
Dharshana et al. Review of information and communication technologies for smart micro-grid automation
US20230089477A1 (en) Wire down detection system and method

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20180423

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20190227

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20190305

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20190305

R150 Certificate of patent or registration of utility model

Ref document number: 6494448

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150