JP7102057B2 - Discharge detection structure and discharge detection system - Google Patents

Discharge detection structure and discharge detection system Download PDF

Info

Publication number
JP7102057B2
JP7102057B2 JP2018077464A JP2018077464A JP7102057B2 JP 7102057 B2 JP7102057 B2 JP 7102057B2 JP 2018077464 A JP2018077464 A JP 2018077464A JP 2018077464 A JP2018077464 A JP 2018077464A JP 7102057 B2 JP7102057 B2 JP 7102057B2
Authority
JP
Japan
Prior art keywords
discharge
pass filter
filter unit
noise
unit
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.)
Active
Application number
JP2018077464A
Other languages
Japanese (ja)
Other versions
JP2019184480A (en
Inventor
淳史 宮本
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 Corp
Original Assignee
Nitto Kogyo Corp
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 Corp filed Critical Nitto Kogyo Corp
Priority to JP2018077464A priority Critical patent/JP7102057B2/en
Priority to US17/046,184 priority patent/US11209499B2/en
Priority to SG11202010082WA priority patent/SG11202010082WA/en
Priority to EP19785901.0A priority patent/EP3779479B1/en
Priority to PCT/JP2019/015780 priority patent/WO2019198791A1/en
Publication of JP2019184480A publication Critical patent/JP2019184480A/en
Priority to JP2019196046A priority patent/JP2020025460A/en
Application granted granted Critical
Publication of JP7102057B2 publication Critical patent/JP7102057B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Description

本発明は、放電検出構造及び放電検出システムに関するものである。 The present invention relates to a discharge detection structure and a discharge detection system.

一般的に分電盤は、分岐ブレーカを多数備えており、電線で又はコンセントを介して負荷が接続される。ところで、トラッキングや断線などにより放電事故が生じることがある。トラッキングや断線などで放電事故が発生したとき、負荷に接続される電路の電圧又は電流にノイズが重畳する。所定の周波数領域でノイズが発生するため、特許文献１に記載されているように、電路間の電圧から周波数解析を行って放電を検出することがなされている。 Generally, the distribution board is provided with a large number of branch breakers, and the load is connected by electric wires or via an outlet. By the way, a discharge accident may occur due to tracking or disconnection. When a discharge accident occurs due to tracking or disconnection, noise is superimposed on the voltage or current of the electric circuit connected to the load. Since noise is generated in a predetermined frequency region, as described in Patent Document 1, frequency analysis is performed from the voltage between electric circuits to detect discharge.

特開２００９－２７８７４４号公報Japanese Unexamined Patent Publication No. 2009-278744

ところで、特許文献１に記載されているような周波数解析を行おうとすると、変換装置が必要となり、費用がかさむ。また、ノイズが他のブレーカから回り込むことにより、放電を検出する虞があった。 By the way, when attempting to perform frequency analysis as described in Patent Document 1, a conversion device is required, which increases the cost. In addition, there is a risk of detecting a discharge due to noise wrapping around from another breaker.

本件の発明者は、この点について鋭意検討することにより、解決を試みた。本発明の課題は、所定の範囲外で発生した放電が検出され難いようにすることにある。 The inventor of this case tried to solve this problem by diligently examining this point. An object of the present invention is to make it difficult to detect a discharge generated outside a predetermined range.

上記課題を解決するため、負荷に接続される電路の電圧又は電流に重畳するノイズから放電を検出する放電検出構造において、放電により重畳された高周波帯域のノイズの検出に用いられるハイパスフィルタ部と、高周波帯域のノイズをカット可能なローパスフィルタ部と、を備え、前記ハイパスフィルタ部の一次側若しくは二次側の少なくとも一方に前記ローパスフィルタ部が配置された放電検出構造とする。 In order to solve the above problems, in the discharge detection structure that detects the discharge from the noise superimposed on the voltage or current of the electric circuit connected to the load, the high-pass filter unit used for detecting the noise in the high frequency band superimposed by the discharge. It has a low-pass filter unit capable of cutting noise in a high-frequency band, and has a discharge detection structure in which the low-pass filter unit is arranged on at least one of the primary side and the secondary side of the high-pass filter unit.

また、ハイパスフィルタ部への通電を検出する検出部と、検出部による通電の検出の有無から放電事故の有無を判定する判定部を備えた構成とすることが好ましい。 Further, it is preferable to have a configuration including a detection unit for detecting energization to the high-pass filter unit and a determination unit for determining the presence or absence of a discharge accident from the presence or absence of detection of energization by the detection unit.

また、外部に警報表示可能な警報表示部を備え、前記警報表示部は、判定部が放電事故があると判定したときに作動する構成とすることが好ましい。 Further, it is preferable that an alarm display unit capable of displaying an alarm is provided externally, and the alarm display unit is configured to operate when the determination unit determines that there is a discharge accident.

また、上記放電検出構造が、直列に複数配置され、放電検出構造間の放電事故の有無を判定可能な放電検出システムとすることが好ましい。 Further, it is preferable to use a discharge detection system in which a plurality of the discharge detection structures are arranged in series and can determine the presence or absence of a discharge accident between the discharge detection structures.

本発明では、他の回路からのノイズの回り込みを防止しつつ、特定の周波数のみのノイズを検出することにより放電の発生を検出することが可能となる。 In the present invention, it is possible to detect the occurrence of discharge by detecting noise only at a specific frequency while preventing noise from wrapping around from other circuits.

放電検出構造を備えた分岐ブレーカが組み込まれた分電盤を表したブロック図である。It is a block diagram which showed the distribution board which incorporated the branch breaker with the discharge detection structure. 放電検出構造を備えた分岐ブレーカを表したブロック図である。It is a block diagram showing a branch breaker provided with a discharge detection structure. 放電検出構造を備えた放電検出装置とブレーカが接続された状態を表したブロック図である。It is a block diagram showing a state in which a discharge detection device provided with a discharge detection structure and a breaker are connected. 放電検出構造を備えた分岐ブレーカを表したブロック図である。但し、ハイパスフィルタ部をアースに接続している。It is a block diagram showing a branch breaker provided with a discharge detection structure. However, the high-pass filter section is connected to ground. 分電盤のリミッタスペースに放電検出構造を配置したことを表す図である。It is a figure which shows that the discharge detection structure was arranged in the limiter space of a distribution board. スマートメータと主幹ブレーカに放電検出構造を組み込んだ状態を表す図である。It is a figure which shows the state which incorporated the discharge detection structure into the smart meter and the main breaker.

以下に発明を実施するための形態を示す。本実施形態の、負荷に接続される電路の電圧又は電流に重畳するノイズから放電を検出する放電検出構造１は、高周波帯域のノイズを通過させて放電の検出を行うハイパスフィルタ部１１と、放電検出に使用する高周波帯域のノイズをカットするローパスフィルタ部１９と、を備えている。また、このハイパスフィルタ部１１の一次側若しくは二次側の少なくとも一方に、前記ローパスフィルタ部１９が接続されている。このため、前記高周波帯域のみのノイズを前記ハイパスフィルタ部１１で検出することにより放電の発生を検出するとともに、前記ローパスフィルタ部１９により他の回路へのノイズの回り込み、及び、他の回路からのノイズの回り込みを防止することが可能となる。 A mode for carrying out the invention is shown below. The discharge detection structure 1 of the present embodiment, which detects discharge from noise superimposed on the voltage or current of the electric circuit connected to the load, has a high-pass filter unit 11 that detects discharge by passing noise in a high frequency band and discharge. It includes a low-pass filter unit 19 that cuts noise in the high frequency band used for detection. Further, the low-pass filter unit 19 is connected to at least one of the primary side and the secondary side of the high-pass filter unit 11. Therefore, the generation of discharge is detected by detecting the noise only in the high frequency band by the high-pass filter unit 11, the noise wraps around to other circuits by the low-pass filter unit 19, and the noise from other circuits is detected. It is possible to prevent noise from wrapping around.

図１に示す例では、放電検出構造１は、分電盤７に組み込まれている。特に、負荷９５が接続された分岐ブレーカ９１ｂに組み込まれている。放電検出構造１が組み込まれたブレーカ９１は、ハイパスフィルタ部１１で高周波帯域のノイズを検出した場合に、開閉スイッチ９２を開くようにしている。図２に示すように、この放電検出構造１は、開閉スイッチ９２の二次側に配置されており、ハイパスフィルタ部１１の一次側にローパスフィルタ部１９が位置している。このため、ローパスフィルタ部１９の一次側の放電で発生した場合の高周波帯域のノイズはローパスフィルタ部１９を越えて、ハイパスフィルタ部１１に到達せず、このハイパスフィルタ部１１では検出されない。したがって、負荷９５が接続側で発生したノイズは検出可能とし、負荷９５の一次側のノイズは検出しないため、他の回路で生じた高周波帯域のノイズにより不必要に開閉スイッチ９２が開くことを抑制することができる。なお、図２に示すブレーカ９１には、ハイパスフィルタ部１１の回路への通電を検出する検出部１４と、検出部１４が通電を検出した場合に、トラッキングや断線などの放電事故の有無を判定する判定部１５を備えている。また、ブレーカ９１の外部には警報表示可能な警報表示部８２を備えている。この警報表示部８２は、判定部１５が放電事故があると判定したときに作動する。この警報表示部８２はＬＥＤのように光るものであっても良いし、ボタンが飛び出すような機械的な表示であっても良い。ボタンが飛び出す構造の場合、ブレーカ９１の開閉スイッチ９２がＯＦＦになっていたとしてもボタンを表示させておくことも可能である。 In the example shown in FIG. 1, the discharge detection structure 1 is incorporated in the distribution board 7. In particular, the load 95 is incorporated in the connected branch breaker 91b. The breaker 91 incorporating the discharge detection structure 1 opens the open / close switch 92 when the high-pass filter unit 11 detects noise in the high-frequency band. As shown in FIG. 2, the discharge detection structure 1 is arranged on the secondary side of the open / close switch 92, and the low-pass filter unit 19 is located on the primary side of the high-pass filter unit 11. Therefore, the noise in the high frequency band when generated by the discharge on the primary side of the low-pass filter unit 19 exceeds the low-pass filter unit 19 and does not reach the high-pass filter unit 11, and is not detected by the high-pass filter unit 11. Therefore, the noise generated on the connection side of the load 95 can be detected, and the noise on the primary side of the load 95 is not detected. Therefore, it is possible to suppress the opening / closing switch 92 from being unnecessarily opened due to the noise in the high frequency band generated in other circuits. can do. The breaker 91 shown in FIG. 2 has a detection unit 14 that detects energization of the circuit of the high-pass filter unit 11, and when the detection unit 14 detects energization, it determines whether or not there is a discharge accident such as tracking or disconnection. The determination unit 15 is provided. Further, an alarm display unit 82 capable of displaying an alarm is provided outside the breaker 91. The alarm display unit 82 operates when the determination unit 15 determines that there is a discharge accident. The alarm display unit 82 may be a shining one such as an LED, or may be a mechanical display such that a button pops out. In the case of a structure in which the button pops out, it is possible to display the button even if the open / close switch 92 of the breaker 91 is turned off.

開閉スイッチ９２を動作させる遮断部８１は、判定部１５で放電事故検出の判定をした後、判定部１５の信号によりブレーカ９１の機構部を動作させる。開閉スイッチ９２を開くタイミングは必要に応じて設定すれば良く、放電事故検出後、直ぐに開閉スイッチ９２を開くものであっても良いし、放電事故を検出してから所定時間経過後に開閉スイッチ９２を開くものであっても良い。なお、漏電ブレーカ９１の場合は漏電検出装置を動作させて遮断するものでも良い。 The circuit breaker 81 that operates the open / close switch 92 operates the mechanism unit of the breaker 91 by the signal of the determination unit 15 after the determination unit 15 determines the discharge accident detection. The timing for opening the open / close switch 92 may be set as necessary, and the open / close switch 92 may be opened immediately after the discharge accident is detected, or the open / close switch 92 may be opened after a predetermined time has elapsed after the discharge accident is detected. It may be something that opens. In the case of the line-to-ground leakage breaker 91, the line-to-ground leakage detection device may be operated to shut off the circuit breaker 91.

放電検出構造１はブレーカ９１内などに組み込んだものであっても、別体として形成するものでも良い（図３参照）。放電検出構造１を備えた放電事故検出装置８９を設ければ、この放電事故検出装置８９を配置する位置を選択して取り付けることにより、電路２に対して容易に放電検出構造１を組み付けることができる。また、放電検出構造１はローパスフィルタ部１９とハイパスフィルタ部１１を異なる装置に分けて組み込むものであっても良い。ローパスフィルタ１９の配置側は高周波帯域のノイズがカットされるため、電路の測定側を選択することができる。また、図４に示すことから理解されるように、各電路２に取り付けられるハイパスフィルタ部１１をアースに接続するように形成しても良い。ローパスフィルタ１９は各電路２に直列に形成するものであっても良いし、電路２間に渡すように形成するものであっても良い。 The discharge detection structure 1 may be incorporated in the breaker 91 or the like, or may be formed as a separate body (see FIG. 3). If the discharge accident detection device 89 provided with the discharge detection structure 1 is provided, the discharge detection structure 1 can be easily assembled to the electric path 2 by selecting and attaching the position where the discharge accident detection device 89 is arranged. can. Further, the discharge detection structure 1 may include the low-pass filter unit 19 and the high-pass filter unit 11 separately in different devices. Since noise in the high frequency band is cut on the arrangement side of the low-pass filter 19, the measurement side of the electric circuit can be selected. Further, as can be understood from that shown in FIG. 4, the high-pass filter portion 11 attached to each electric circuit 2 may be formed so as to be connected to the ground. The low-pass filter 19 may be formed in series with each electric circuit 2, or may be formed so as to pass between the electric circuits 2.

本実施形態の放電検出構造１に備えられたハイパスフィルタ部１１は、電路２間に渡すように抵抗１２とコンデンサ１３からなるハイパスフィルタ部１１の回路を配置している。また、抵抗１２間の電圧を検出することができる検出部１４を備えている。ハイパスフィルタ部１１に備えられたコンデンサ１３は、交流回路の周波数が高くなったときに電流が流れ、低くなると流れ難いという特性を備えている。このため、低周波帯域では電流が流れず、検出部１４では電流（抵抗１２間の電圧）を検出することができない。一方、高周波帯域では電流が流れ、検出部１４で電流（抵抗１２間の電圧）を検出することができる。したがって、検出部１４による電流通電の有無の検出により放電が発生したか否かを判定することができる。なお、放電によって発生するノイズは電線から空中に放射する高周波帯域の放電ノイズであり、検出部１４はこの高周波帯域の放電ノイズを検出する。周辺に配置した家電の動作などにより発生し得る家電ノイズはこの周波数帯域とは異なる帯域のものであり、ハイパスフィルタ部１１で検出されない。このため、本発明を用いれば、家電ノイズと切り分けて高周波帯域の放電ノイズを検出することができる。 The high-pass filter unit 11 provided in the discharge detection structure 1 of the present embodiment arranges the circuit of the high-pass filter unit 11 including the resistor 12 and the capacitor 13 so as to pass between the electric paths 2. Further, a detection unit 14 capable of detecting the voltage between the resistors 12 is provided. The capacitor 13 provided in the high-pass filter unit 11 has a characteristic that a current flows when the frequency of the AC circuit becomes high, and it is difficult to flow when the frequency of the AC circuit becomes low. Therefore, no current flows in the low frequency band, and the detection unit 14 cannot detect the current (voltage between the resistors 12). On the other hand, a current flows in the high frequency band, and the detection unit 14 can detect the current (voltage between the resistors 12). Therefore, it is possible to determine whether or not a discharge has occurred by detecting the presence or absence of current energization by the detection unit 14. The noise generated by the discharge is the discharge noise in the high frequency band radiated from the electric wire into the air, and the detection unit 14 detects the discharge noise in the high frequency band. Home appliance noise that can be generated by the operation of home appliances arranged in the vicinity is in a band different from this frequency band, and is not detected by the high-pass filter unit 11. Therefore, according to the present invention, it is possible to detect the discharge noise in the high frequency band separately from the household appliance noise.

図５に示すことから理解されるように、放電検出構造１の配置には、分電盤７のリミッタスペース９３を利用することもできる。その場合、リードバーの代わりに電線によって配線を行い、放電検出構造１の二次側以降の放電を検出するように構成することが好ましい。 As can be seen from FIG. 5, the limiter space 93 of the distribution board 7 can also be used for the arrangement of the discharge detection structure 1. In that case, it is preferable to wire with an electric wire instead of the lead bar so as to detect the discharge after the secondary side of the discharge detection structure 1.

図６に示すことから理解されるように、放電検出構造１が、直列に複数配置されたものとしても良い。この場合、放電検出構造１間の放電の有無を判定可能な放電検出システム９９とすることができる。なお、図６に示す例ではスマートメータ６１と主幹ブレーカ９１ａの双方に放電検出構造１が組み込まれており、スマートメータ６１と主幹ブレーカ９１ａの間の異常を特定できるものとしている。詳しくは、スマートメータ６１に形成される放電検出構造１のハイパスフィルタ部１１は、ローパスフィルタ部１９によりスマートメータ６１の一次側の高周波帯域のノイズをカットし、主幹ブレーカ９のローパスフィルタ１９により主幹ブレーカ９１ａの二次側の高周波帯域のノイズをカットするものであるため、スマートメータ６１と主幹ブレーカ９１ａの間の異常を特定できるものである。 As can be understood from FIG. 6, a plurality of discharge detection structures 1 may be arranged in series. In this case, the discharge detection system 99 can determine the presence or absence of discharge between the discharge detection structures 1. In the example shown in FIG. 6, the discharge detection structure 1 is incorporated in both the smart meter 61 and the main circuit breaker 91a, and it is possible to identify an abnormality between the smart meter 61 and the main circuit breaker 91a. Specifically, the high-pass filter unit 11 of the discharge detection structure 1 formed in the smart meter 61 cuts the noise in the high frequency band on the primary side of the smart meter 61 by the low-pass filter unit 19, and the low-pass filter 19 of the main breaker 9 cuts the noise. Since it cuts noise in the high frequency band on the secondary side of the breaker 91a, it is possible to identify an abnormality between the smart meter 61 and the main breaker 91a.

なお、放電検出構造１はハイパスフィルタ部１１の一次側にローパスフィルタ部１９を配置するものである必要は無く、ハイパスフィルタ部１１の二次側にローパスフィルタ部１９を配置するものとしても良い。ハイパスフィルタ部１１の二次側にローパスフィルタ部１９を配置した場合には、負荷側で発生した場合の高周波帯域のノイズはローパスフィルタ部１９を越えて、ハイパスフィルタに到達せず、ハイパスフィルタ部１１の一次側で生じる高周波帯域のノイズを検出することができるものである。 The discharge detection structure 1 does not need to arrange the low-pass filter unit 19 on the primary side of the high-pass filter unit 11, and may arrange the low-pass filter unit 19 on the secondary side of the high-pass filter unit 11. When the low-pass filter unit 19 is arranged on the secondary side of the high-pass filter unit 11, the noise in the high-frequency band when generated on the load side exceeds the low-pass filter unit 19 and does not reach the high-pass filter, so that the high-pass filter unit does not reach the high-pass filter unit. It is possible to detect noise in the high frequency band generated on the primary side of 11.

また、電路２に流れている電流にも、放電ノイズが重畳されるため、電流検出器９７を用いてノイズが加えられていることを検出するようにすれば、より正確に放電の発生を検出できる。 Further, since the discharge noise is superimposed on the current flowing in the electric circuit 2, if the current detector 97 is used to detect that the noise is applied, the occurrence of the discharge can be detected more accurately. can.

以上、実施形態を例に挙げて本発明について説明してきたが、本発明は上記実施形態に限定されることはなく、各種の態様とすることが可能である。 Although the present invention has been described above by taking an embodiment as an example, the present invention is not limited to the above embodiment and can be various modes.

１ 放電検出構造
１１ ハイパスフィルタ部
１４ 検出部
１５ 判定部
１９ ローパスフィルタ部
８２ 警報表示部
９９ 放電検出システム 1 Discharge detection structure 11 High-pass filter unit 14 Detection unit 15 Judgment unit 19 Low-pass filter unit 82 Alarm display unit 99 Discharge detection system

Claims (3)

負荷に接続される電路の電圧又は電流に重畳するノイズから放電を検出する放電検出構造において、
前記放電により重畳された高周波帯域のノイズの検出に用いられるハイパスフィルタ部と、
前記高周波帯域のノイズをカット可能なローパスフィルタ部と、
前記ハイパスフィルタ部への通電を検出する検出部と、
前記検出部による前記通電の検出の有無から放電事故の有無を判定する判定部と、
を備え、
前記ハイパスフィルタ部の一次側若しくは二次側の少なくとも一方に前記ローパスフィルタ部が配置された放電検出構造。 In a discharge detection structure that detects discharge from noise superimposed on the voltage or current of the electric circuit connected to the load.
A high-pass filter unit used to detect noise in the high-frequency band superimposed by the discharge, and
A low-pass filter unit that can cut noise in the high frequency band,
A detection unit that detects energization of the high-pass filter unit and
A determination unit that determines the presence or absence of a discharge accident based on the presence or absence of detection of the energization by the detection unit,
With
A discharge detection structure in which the low-pass filter unit is arranged on at least one of the primary side and the secondary side of the high-pass filter unit. 外部に警報表示可能な警報表示部を備え、
前記警報表示部は、前記判定部が前記放電事故があると判定したときに作動する請求項１記載の放電検出構造。 Equipped with an alarm display unit that can display an alarm externally
The discharge detection structure according to claim 1, wherein the alarm display unit operates when the determination unit determines that there is a discharge accident. 負荷に接続される電路の電圧又は電流に重畳するノイズから放電を検出する放電検出構造であって、前記放電により重畳された高周波帯域のノイズの検出に用いられるハイパスフィルタ部と、前記高周波帯域のノイズをカット可能なローパスフィルタ部と、を備え、前記ハイパスフィルタ部の一次側若しくは二次側の少なくとも一方に前記ローパスフィルタ部が配置された放電検出構造が、直列に複数配置され、前記放電検出構造間の放電事故の有無を判定可能な放電検出システム。 It is a discharge detection structure that detects discharge from noise superimposed on the voltage or current of the electric circuit connected to the load, and is a high-pass filter unit used for detecting noise in the high frequency band superimposed by the discharge, and the high frequency band. A plurality of discharge detection structures including a low-pass filter unit capable of cutting noise and having the low-pass filter unit arranged on at least one of the primary side or the secondary side of the high-pass filter unit are arranged in series to detect the discharge. A discharge detection system that can determine the presence or absence of a discharge accident between structures.
JP2018077464A 2018-04-13 2018-04-13 Discharge detection structure and discharge detection system Active JP7102057B2 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
JP2018077464A JP7102057B2 (en) 2018-04-13 2018-04-13 Discharge detection structure and discharge detection system
US17/046,184 US11209499B2 (en) 2018-04-13 2019-04-11 Distribution board
SG11202010082WA SG11202010082WA (en) 2018-04-13 2019-04-11 Distribution board
EP19785901.0A EP3779479B1 (en) 2018-04-13 2019-04-11 Distribution board
PCT/JP2019/015780 WO2019198791A1 (en) 2018-04-13 2019-04-11 Distribution board
JP2019196046A JP2020025460A (en) 2018-04-13 2019-10-29 Discharge detection structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2018077464A JP7102057B2 (en) 2018-04-13 2018-04-13 Discharge detection structure and discharge detection system

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP2019196046A Division JP2020025460A (en) 2018-04-13 2019-10-29 Discharge detection structure

Publications (2)

Publication Number Publication Date
JP2019184480A JP2019184480A (en) 2019-10-24
JP7102057B2 true JP7102057B2 (en) 2022-07-19

Family

ID=68340823

Family Applications (2)

Application Number Title Priority Date Filing Date
JP2018077464A Active JP7102057B2 (en) 2018-04-13 2018-04-13 Discharge detection structure and discharge detection system
JP2019196046A Pending JP2020025460A (en) 2018-04-13 2019-10-29 Discharge detection structure

Family Applications After (1)

Application Number Title Priority Date Filing Date
JP2019196046A Pending JP2020025460A (en) 2018-04-13 2019-10-29 Discharge detection structure

Country Status (1)

Country Link
JP (2) JP7102057B2 (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2021059483A (en) 2019-10-07 2021-04-15 東ソー株式会社 Gallium nitride particles and method for their production
CN115298555A (en) * 2020-03-11 2022-11-04 松下知识产权经营株式会社 Arc detection device, power conditioner, indoor wiring system, circuit breaker, solar panel accessory module, and junction box
JP2022029917A (en) 2020-08-06 2022-02-18 日東工業株式会社 Discharge detection system
EP4195432A1 (en) 2020-08-06 2023-06-14 Nitto Kogyo Corporation Electrical discharge detection system
JP7458014B2 (en) 2020-10-29 2024-03-29 パナソニックＩｐマネジメント株式会社 Arc detection system, arc detection method, and program
US20230341475A1 (en) 2020-10-29 2023-10-26 Panasonic Intellectual Property Management Co., Ltd. Arc detection system, arc detection method, and recording medium
US20230393218A1 (en) * 2020-10-29 2023-12-07 Panasonic Intellectual Property Management Co., Ltd. Arc detection system, arc detection method, and recording medium
US20240036098A1 (en) 2020-12-04 2024-02-01 Nitto Kogyo Corporation Discharge Detection Device
WO2023038051A1 (en) 2021-09-10 2023-03-16 日東工業株式会社 Plug-type electric discharge detection unit and electric discharge detection system

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001124814A (en) 1999-10-28 2001-05-11 Matsushita Electric Works Ltd Insulation deterioration detection device in inverter device, and solar power generating system, and electric vehicle using it
JP2004226299A (en) 2003-01-24 2004-08-12 Toshiba Corp Deterioration diagnosing device for winding of rotating electric machine
JP2009245792A (en) 2008-03-31 2009-10-22 Panasonic Electric Works Co Ltd Wiring apparatus
JP2010154738A (en) 2008-12-22 2010-07-08 General Electric Co <Ge> Arc detection using detailed and approximate coefficients of discrete wavelet transforms
US20130221977A1 (en) 2010-10-14 2013-08-29 Abb Research Ltd Fault direction parameter indicator device and related methods
JP2016130650A (en) 2015-01-13 2016-07-21 三菱電機株式会社 Partial discharge monitoring apparatus
JP2017173008A (en) 2016-03-22 2017-09-28 日東工業株式会社 Discharge accident detection system
WO2017187481A1 (en) 2016-04-25 2017-11-02 株式会社東芝 Partial discharge detector

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3252444B2 (en) * 1992-06-16 2002-02-04 富士電機株式会社 Circuit breaker with earth leakage alarm
JP2958594B2 (en) * 1993-01-11 1999-10-06 株式会社日立製作所 Insulation deterioration diagnosis device
JPH1075525A (en) * 1996-08-29 1998-03-17 Central Res Inst Of Electric Power Ind Leak detecting/removing method
US6987389B1 (en) * 2000-11-14 2006-01-17 Pass & Seymour, Inc. Upstream/downstream arc fault discriminator
KR100900089B1 (en) * 2007-04-13 2009-06-01 정태영 The circuit device which the electricity passes to block the power supply to the automatic if the electricity spark happens at electric wire
JP6509029B2 (en) * 2015-05-14 2019-05-08 日東工業株式会社 Distribution board

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001124814A (en) 1999-10-28 2001-05-11 Matsushita Electric Works Ltd Insulation deterioration detection device in inverter device, and solar power generating system, and electric vehicle using it
JP2004226299A (en) 2003-01-24 2004-08-12 Toshiba Corp Deterioration diagnosing device for winding of rotating electric machine
JP2009245792A (en) 2008-03-31 2009-10-22 Panasonic Electric Works Co Ltd Wiring apparatus
JP2010154738A (en) 2008-12-22 2010-07-08 General Electric Co <Ge> Arc detection using detailed and approximate coefficients of discrete wavelet transforms
US20130221977A1 (en) 2010-10-14 2013-08-29 Abb Research Ltd Fault direction parameter indicator device and related methods
JP2016130650A (en) 2015-01-13 2016-07-21 三菱電機株式会社 Partial discharge monitoring apparatus
JP2017173008A (en) 2016-03-22 2017-09-28 日東工業株式会社 Discharge accident detection system
WO2017187481A1 (en) 2016-04-25 2017-11-02 株式会社東芝 Partial discharge detector

Also Published As

Publication number Publication date
JP2019184480A (en) 2019-10-24
JP2020025460A (en) 2020-02-13

Similar Documents

Publication Publication Date Title
JP7102057B2 (en) Discharge detection structure and discharge detection system
US5477412A (en) Ground fault circuit interrupter incorporating miswiring prevention circuitry
US11456589B2 (en) Methods and devices for selective insulation monitoring in ungrounded Isolé Terre (IT) power supply systems
US7219023B2 (en) Method and device for the detection of fault current arcing in electric circuits
US7312964B2 (en) Ground-fault monitor for multiple circuits
US10840698B2 (en) Leakage current detection and protection device for power cord
US10557883B2 (en) Leakage current detection and protection device for power cord
US10886724B2 (en) Leakage current detection and interruption device for power cord
MXPA00012519A (en) Arc fault protected electrical receptacle.
CA2582884A1 (en) Leakage current monitor
JP7072982B2 (en) Discharge accident detection structure
JP5115957B2 (en) Circuit breaker
JP5820652B2 (en) Distribution board that cuts off the electric circuit after detecting overheating
JP5167698B2 (en) Circuit breaker
US6795285B1 (en) Protective electrical circuit
KR20120083240A (en) Methods and systems involving monitoring circuit connectivity
CA2957090C (en) Circuit interrupter with audible indicator circuit
JP2008305596A (en) Ground-fault circuit interrupter
JP5115955B2 (en) Earth leakage breaker
AU2010215062A1 (en) Circuit breaker having detection of the aperiodic current change
JP5026852B2 (en) Circuit breaker
JP5026853B2 (en) Circuit breaker
JP5403382B2 (en) Circuit breaker
JP2008277228A (en) Ground fault interrupter
JP2008277167A (en) Ground fault interrupter

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20210222

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20220308

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20220426

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20220531

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20220621

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: 20220705

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20220705

R150 Certificate of patent or registration of utility model

Ref document number: 7102057

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150