JP2006071600A - Watthour meter - Google Patents

Watthour meter Download PDF

Info

Publication number
JP2006071600A
JP2006071600A JP2004258642A JP2004258642A JP2006071600A JP 2006071600 A JP2006071600 A JP 2006071600A JP 2004258642 A JP2004258642 A JP 2004258642A JP 2004258642 A JP2004258642 A JP 2004258642A JP 2006071600 A JP2006071600 A JP 2006071600A
Authority
JP
Japan
Prior art keywords
voltage
voltage value
power
value
watt
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
JP2004258642A
Other languages
Japanese (ja)
Other versions
JP4690680B2 (en
Inventor
Sadataka Ikezoe
禎孝 池添
Shinichiro Oikawa
進一郎 及川
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.)
Toshiba Corp
Original Assignee
Toshiba 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 Toshiba Corp filed Critical Toshiba Corp
Priority to JP2004258642A priority Critical patent/JP4690680B2/en
Publication of JP2006071600A publication Critical patent/JP2006071600A/en
Application granted granted Critical
Publication of JP4690680B2 publication Critical patent/JP4690680B2/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Remote Monitoring And Control Of Power-Distribution Networks (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To detect erroneous wiring occurring when attaching an watthour meter. <P>SOLUTION: This watthour meter 14 is provided with an input terminal 4 connected to an electric power supply facility 2 via the first distribution line 5, an output terminal 7 connected to a load 3 via the second distribution line 8, connection means 6a-6c for connecting the input terminal 4 to the output terminal 7, a voltage detecting means 9 for detecting voltages value impressed to the connection means 6a-6c by the power supply facility 2, a current detecting means 10 for detecting current values flowing in the connection means 6a-6c, a power computing means 15 for finding electric power values based on the voltage values and the current values, a used amount computing means 16a for summing up the electric power values to find a used power amount, a judging means 16b for determining whether the voltage value belongs to a voltage allowance range predetermined for detecting the erroneous wiring or not, and a display means 17 for displaying the used power amount, and for displaying an erroneous wiring alarming notification when the voltage value does not belong to the voltage allowance range. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、使用電力量を計量する電力量計に関する。   The present invention relates to a watt-hour meter that measures the amount of power used.

一般的に、電力量計は、電気の供給者から電気の需要者に電気が供給された場合に、需要者の使用電力量を計量し、表示する。   Generally, when electricity is supplied from an electricity supplier to an electricity consumer, the electricity meter measures and displays the amount of power used by the consumer.

図４は、従来の電力量計の一例を示すブロック図である。   FIG. 4 is a block diagram showing an example of a conventional watt-hour meter.

電力量計１は電子式の電力量計である。電力量計１は、電力供給設備２から負荷３に供給される電力量を計量する。   The watt-hour meter 1 is an electronic watt-hour meter. The watt-hour meter 1 measures the amount of power supplied from the power supply facility 2 to the load 3.

電力量計１の入力端子４は、電力供給設備２と配電線５経由で接続される。正常に配線された場合、入力端子４は、配電線５に含まれる電力線５ａの一端と内部導体６ａの一端とを通電可能とし、配電線５に含まれる電力線５ｂの一端と内部導体６ｂの一端とを通電可能とし、配電線５に含まれる中性線５ｃの一端と内部導体６ｃの一端とを通電可能とする。   The input terminal 4 of the watt-hour meter 1 is connected to the power supply facility 2 via the distribution line 5. When wired normally, the input terminal 4 can energize one end of the power line 5a included in the distribution line 5 and one end of the internal conductor 6a, and one end of the power line 5b included in the distribution line 5 and one end of the internal conductor 6b. And one end of the neutral wire 5c included in the distribution line 5 and one end of the internal conductor 6c can be energized.

電力量計１の出力端子７は、負荷３と配電線８経由で接続される。正常に配線された場合、出力端子７は、配電線８に含まれる電力線８ａの一端と内部導体６ａの他端とを通電可能とし、配電線８に含まれる電力線８ｂの一端と内部導体６ｂの他端とを通電可能とし、配電線８に含まれる中性線８ｃの一端と内部導体６ｃの他端とを通電可能とする。   The output terminal 7 of the watt-hour meter 1 is connected to the load 3 via the distribution line 8. When wired normally, the output terminal 7 can energize one end of the power line 8a included in the distribution line 8 and the other end of the internal conductor 6a, and one end of the power line 8b included in the distribution line 8 and the internal conductor 6b. The other end can be energized, and one end of the neutral wire 8c included in the distribution line 8 and the other end of the internal conductor 6c can be energized.

すなわち、電力量計１の入力端子４と出力端子７は、電力量計１の内部導体６ａ〜６ｃによって接続されている。   That is, the input terminal 4 and the output terminal 7 of the watt hour meter 1 are connected by the internal conductors 6 a to 6 c of the watt hour meter 1.

電力量計１の内部では、電圧検出部９は、入力端子４から、電力供給設備２から負荷３に供給される電力に対する電圧成分を電気信号として検出する。例えば、電圧検出部９は、内部導体６ａと内部導体６ｃとの間の電圧及び内部導体６ｂと内部導体６ｃとの間の電圧を検出する。   Inside the watt hour meter 1, the voltage detection unit 9 detects a voltage component with respect to the power supplied from the power supply facility 2 to the load 3 as an electric signal from the input terminal 4. For example, the voltage detection unit 9 detects the voltage between the internal conductor 6a and the internal conductor 6c and the voltage between the internal conductor 6b and the internal conductor 6c.

電流検出部１０は、内部導体６ａ及び内部導体６ｂから電流成分を電気信号として検出する。   The current detection unit 10 detects a current component as an electrical signal from the inner conductor 6a and the inner conductor 6b.

電力演算部１１は、電圧成分の電気信号と電流成分の電気信号とに基づいて、電圧検出部９によって検出された電圧値と電流検出部１０によって検出された電流値との乗算を実行し、電力値を求める。   The power calculation unit 11 performs multiplication of the voltage value detected by the voltage detection unit 9 and the current value detected by the current detection unit 10 based on the electrical signal of the voltage component and the electrical signal of the current component, Find the power value.

中央演算部１２は、演算された電力値を累積し、使用電力量を求める。   The central processing unit 12 accumulates the calculated power values and obtains the amount of power used.

表示部１３は、使用電力量を表示する。   The display unit 13 displays the amount of power used.

例えば、単相３線式の配電方式においては、図５に示すように、電力線５ａと中性線５ｃとの間及び電力線５ｂと中性線５ｃとの間に、定格（例えば１００Ｖ）の電位差があり、電力線５ａと電力線５ｂとの間には、定格の２倍（例えば２００Ｖ）の電位差がある。   For example, in the single-phase three-wire distribution system, as shown in FIG. 5, a potential difference (for example, 100 V) between the power line 5a and the neutral line 5c and between the power line 5b and the neutral line 5c. There is a potential difference between the power line 5a and the power line 5b that is twice the rating (for example, 200V).

特開２００４−１３８４９４号公報に開示されている電子式電力量計は、外部から供給される多相電力の電圧の相順が正相順であるか逆相順であるかを判定し、判定結果を表示する。これにより、作業者は、相順が正常になるように接続されたかを知ることが可能となる。
特開２００４−１３８４９４号公報 An electronic watt-hour meter disclosed in Japanese Patent Application Laid-Open No. 2004-138494 determines whether the phase sequence of the voltage of multiphase power supplied from the outside is a normal phase sequence or a reverse phase sequence, and the determination Display the results. As a result, the operator can know whether the phase sequence is connected so as to be normal.
JP 2004-138494 A

上記のような従来の電力量計１では、取り付けを行う作業者の誤配線などにより、電力量計１の内部機器及び内部回路に異常な電圧が印加され、この電力量計１の内部機器及び内部回路が故障する場合がある。   In the conventional watt-hour meter 1 as described above, an abnormal voltage is applied to the internal devices and internal circuits of the watt-hour meter 1 due to miswiring of the worker performing the installation. Internal circuit may fail.

また、従来の電力量計１において、入力端子４と内部機器及び内部回路との間に異常電圧を抑制するための保護回路が備えられる場合がある。保護回路が備えられた従来の電力量計１では、この保護回路の動作により誤った計量が行われる場合がある。   Moreover, in the conventional watt-hour meter 1, a protection circuit for suppressing an abnormal voltage may be provided between the input terminal 4 and the internal device and internal circuit. In the conventional watt-hour meter 1 provided with the protection circuit, erroneous measurement may be performed by the operation of the protection circuit.

例えば、単相３線式の配電方式において、作業者が電力線５ａと中性線５ｃとを誤って逆に配線した場合、電圧検出部９には、定格の２倍の電圧が印加されることになる。この状態で保護回路が動作した場合、作業者は取り付け時の異常を発見することが困難であり、電力量計１は誤配線のまま運用される可能性がある。   For example, in a single-phase three-wire distribution system, when an operator mistakenly wires the power line 5a and the neutral line 5c in reverse, a voltage twice the rated voltage is applied to the voltage detection unit 9. become. When the protection circuit operates in this state, it is difficult for an operator to find an abnormality at the time of attachment, and the watt-hour meter 1 may be operated with incorrect wiring.

上記の特開２００４−１３８４９４号公報に開示されている電子式電力量計では、多相電力の電圧の相順が正相順であるか逆相順であるか表示される。しかしながら、電力線５ａと中性線５ｃとの誤配線までは検討されていない。   In the electronic watt hour meter disclosed in the above Japanese Patent Application Laid-Open No. 2004-138494, it is displayed whether the phase sequence of the voltage of the multiphase power is the normal phase sequence or the reverse phase sequence. However, no consideration has been given to miswiring between the power line 5a and the neutral line 5c.

本発明は、以上のような実情に鑑みてなされたもので、作業者による取り付け時の誤配線を検出し、誤配線による誤った運用を防止し、安全かつ適正な電力取引を可能とする電力量計を提供することを目的とする。   The present invention has been made in view of the above circumstances, and detects an incorrect wiring at the time of installation by an operator, prevents an erroneous operation due to an incorrect wiring, and enables safe and appropriate power trading. The purpose is to provide a meter.

本発明を実現するにあたって講じた具体的手段について以下に説明する。   Specific means taken for realizing the present invention will be described below.

上記課題は、電力供給設備と第１配電線経由で接続される入力端子と、負荷と第２配電線経由で接続される出力端子と、入力端子と出力端子とを接続する接続手段と、電力供給設備によって接続手段に対して印加される電圧値を検出する電圧検出手段と、接続手段を流れる電流値を検出する電流検出手段と、電圧値と電流値に基づいて電力値を求める電力演算手段と、電力値を累積して使用電力量を求める使用量演算手段と、電圧値が誤配線を検出するために所定された電圧許容範囲に属するか否かを判断する判断手段と、使用電力量を表示し、電圧値が電圧許容範囲に属さない場合に誤配線警告を表示する表示手段とを具備する電力量計により、解決される。   The above-described problems include an input terminal connected to the power supply facility via the first distribution line, an output terminal connected to the load via the second distribution line, a connection means for connecting the input terminal and the output terminal, and power Voltage detection means for detecting a voltage value applied to the connection means by the supply facility, current detection means for detecting a current value flowing through the connection means, and power calculation means for obtaining a power value based on the voltage value and the current value A usage amount calculating means for accumulating the power value to obtain the used power amount, a determining means for determining whether or not the voltage value belongs to a predetermined allowable voltage range for detecting an incorrect wiring, and the used power amount And a watt hour meter comprising display means for displaying an incorrect wiring warning when the voltage value does not belong to the allowable voltage range.

本発明においては、取り付け時の誤配線を検出でき、誤配線による誤った運用を防止でき、安全かつ適正な電力取引を実現できる。   In the present invention, erroneous wiring at the time of attachment can be detected, erroneous operation due to erroneous wiring can be prevented, and safe and appropriate power transactions can be realized.

以下、図面を参照しながら本発明の実施の形態について説明する。なお、以下の説明において、上記図４及び図５と同一の部分については同一の符号を付して説明を省略する。   Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following description, the same parts as those in FIG. 4 and FIG.

図１は、本実施の形態に係る電力量計の一例を示すブロック図である。   FIG. 1 is a block diagram showing an example of a watt-hour meter according to the present embodiment.

電力量計１４は、入力端子４、出力端子７、内部導体６ａ〜６ｃ、電圧検出部９、電流検出部１０、電力演算部１５、中央演算部１６、表示部１７、記憶部１８、設定部１９、送信部２０を具備する。また、中央演算部１６は、使用量演算部１６ａと判断部１６ｂを具備する。なお、記録部１８には、例えば不揮発性のメモリ、ハードディスクなどが用いられる。   The watt hour meter 14 includes an input terminal 4, an output terminal 7, internal conductors 6a to 6c, a voltage detection unit 9, a current detection unit 10, a power calculation unit 15, a central calculation unit 16, a display unit 17, a storage unit 18, and a setting unit. 19 and a transmission unit 20 are provided. In addition, the central calculation unit 16 includes a usage amount calculation unit 16a and a determination unit 16b. For the recording unit 18, for example, a nonvolatile memory, a hard disk, or the like is used.

電力量計１４は、電子式電力量計であり、需要家が使用している電力量を計量する。   The watt-hour meter 14 is an electronic watt-hour meter, and measures the amount of power used by consumers.

電圧検出部９は、内部導線６ａと内部導線６ｃとの間の電圧成分（第１電圧値）を電気信号として検出し、内部導線６ｂと内部導線６ｃとの間の電圧成分（第２電圧値）を電気信号として検出し、電力演算部１５に提供する。   The voltage detector 9 detects a voltage component (first voltage value) between the internal conductor 6a and the internal conductor 6c as an electrical signal, and a voltage component (second voltage value) between the internal conductor 6b and the internal conductor 6c. ) As an electric signal and provided to the power calculation unit 15.

なお、電圧検出部９は、入力端子４において、第１電圧値及び第２電圧値を検出するとしてもよい。   The voltage detection unit 9 may detect the first voltage value and the second voltage value at the input terminal 4.

電流検出部１０は、内部導線６ａにおける電流成分（第１電流値）を電気信号として検出し、内部導線６ｂにおける電流成分（第２電流値）を電気信号として検出し、電力演算部１５に提供する。   The current detection unit 10 detects the current component (first current value) in the internal conductor 6 a as an electrical signal, detects the current component (second current value) in the internal conductor 6 b as an electrical signal, and provides it to the power calculation unit 15. To do.

電力演算部１５は、電圧検出部９によって検出された第１電圧値と電流検出部１０によって検出された第１電流値との積、及び電圧検出部９によって検出された第２電圧値と電流検出部１０によって検出された第２電流値との積により電力値を求め、中央演算部１６の使用量演算部１６ａに提供する。   The power calculation unit 15 calculates the product of the first voltage value detected by the voltage detection unit 9 and the first current value detected by the current detection unit 10, and the second voltage value and current detected by the voltage detection unit 9. The power value is obtained from the product of the second current value detected by the detection unit 10 and provided to the usage calculation unit 16a of the central calculation unit 16.

また、電力演算部１５は、第１電圧値と第２電圧値とを、中央演算部１６の判断部１６ｂに提供する。   In addition, the power calculation unit 15 provides the first voltage value and the second voltage value to the determination unit 16 b of the central calculation unit 16.

使用量演算部１６ａは、電力演算部１５からの電力値を受け付け、この電力値を累積した値により使用電力量を求め、また所定期間における最大の電力量などを求め、この使用電力量、最大電力量などを含む計測データ１８ａを表示部１７に提供し、記憶部１８に計測データ１８ａを記憶する。   The usage amount calculation unit 16a receives the power value from the power calculation unit 15, obtains the usage power amount from a value obtained by accumulating the power value, obtains the maximum power amount in a predetermined period, and the like. Measurement data 18 a including the amount of power is provided to the display unit 17, and the measurement data 18 a is stored in the storage unit 18.

設定部１９は、定格の電圧に基づいて所定の電圧許容範囲の設定を受け付け、設定された電圧許容範囲を含む設定データ１８ｂを記憶部１８に記憶する。   The setting unit 19 receives a setting of a predetermined voltage allowable range based on the rated voltage, and stores setting data 18b including the set voltage allowable range in the storage unit 18.

例えば、第１電圧値に対する電圧許容範囲として、定格電圧のプラス１０％からマイナス１０％の範囲が設定される。同様に、第２電圧値に対する電圧許容範囲として、定格電圧のプラス１０％からマイナス１０％の範囲が設定される。   For example, a range of plus 10% to minus 10% of the rated voltage is set as the voltage allowable range for the first voltage value. Similarly, a range of plus 10% to minus 10% of the rated voltage is set as a voltage allowable range for the second voltage value.

判断部１６ｂは、定期的に、第１電圧値と第２電圧値とを、電圧検出部９から中央演算部１６経由で受け付ける。   The determination unit 16 b periodically receives the first voltage value and the second voltage value from the voltage detection unit 9 via the central calculation unit 16.

また、判断部１６ｂは、第１電圧値と第２電圧値との双方が、記憶部１８に記憶されている設定データ１８ｂで表される電圧許容範囲に属するか否か判断する。これにより、内部導線６ａと内部導線６ｃとの間の電圧値と、内部導線６ｂと内部導線６ｃとの間の電圧値とが、定格で使用される範囲を逸脱しているか否かの判断が行われる。   The determination unit 16 b determines whether both the first voltage value and the second voltage value belong to the voltage allowable range represented by the setting data 18 b stored in the storage unit 18. Thereby, it is determined whether the voltage value between the internal conductor 6a and the internal conductor 6c and the voltage value between the internal conductor 6b and the internal conductor 6c are out of the range used in the rating. Done.

そして、判断部１６ｂは、第１電圧値と第２電圧値との双方が電圧許容範囲に属すると判断した場合、正常配線である旨を表示部１７に通知する。   If the determination unit 16b determines that both the first voltage value and the second voltage value belong to the allowable voltage range, the determination unit 16b notifies the display unit 17 that the wiring is normal.

一方、判断部１６ｂは、第１電圧値と第２電圧値とのうち少なくとも一方が電圧許容範囲に属しないと判断した場合、誤配線である旨を表示部１７に通知する。また、判断部１６ｂは、電圧検出部９で検出された第１電圧値と第２電圧値のうちの少なくとも一方が電圧許容範囲に属しないと判断した場合、誤配線である旨の示す情報とこの誤配線の検出された日時情報とを含む警告データ１８ｃを記憶部１８に記憶する。   On the other hand, when the determination unit 16b determines that at least one of the first voltage value and the second voltage value does not belong to the allowable voltage range, the determination unit 16b notifies the display unit 17 that the wiring is incorrect. In addition, when the determination unit 16b determines that at least one of the first voltage value and the second voltage value detected by the voltage detection unit 9 does not belong to the allowable voltage range, information indicating that the wiring is incorrect. The storage unit 18 stores warning data 18c including the date and time information when the erroneous wiring is detected.

送信部２０は、外部機器からネットワーク経由で送信要求を受け付け、記憶部１８に記憶されている計測データ１８ａ及び警告データ１８ｃを外部機器へ送信する。   The transmission unit 20 receives a transmission request from an external device via a network, and transmits the measurement data 18a and the warning data 18c stored in the storage unit 18 to the external device.

表示部１７は、判断部１６ｂから正常配線である旨の通知を受け付けた場合に、使用量演算部１６ａからの計測データ１８ａに基づいて、使用電力量、所定期間における最大電力量などを表示する。   When the display unit 17 receives a notification that the wiring is normal from the determination unit 16b, the display unit 17 displays the amount of power used, the maximum amount of power in a predetermined period, and the like based on the measurement data 18a from the usage amount calculation unit 16a. .

一方、表示部１７は、判断部１６ｂから誤配線である旨の通知を受け付けた場合に、誤配線に関する警告を表示する。   On the other hand, the display unit 17 displays a warning regarding incorrect wiring when receiving a notification of incorrect wiring from the determination unit 16b.

図２は、定格電圧１００Ｖの場合の電圧値と配線との関係の例を示す図である。   FIG. 2 is a diagram illustrating an example of the relationship between the voltage value and the wiring when the rated voltage is 100V.

正常な配線では、電力線５ａと内部導体６ａ、電力線５ｂと内部導体６ｂ、中性線５ｃと内部導体６ｃとが接続される。しかしながら、この図２では、電力線５ｂと内部導体６ｃが接続され、中性線５ｃと内部導体６ｂとが接続されており、誤配線が生じている。   In normal wiring, the power line 5a and the internal conductor 6a, the power line 5b and the internal conductor 6b, and the neutral line 5c and the internal conductor 6c are connected. However, in FIG. 2, the power line 5b and the internal conductor 6c are connected, and the neutral line 5c and the internal conductor 6b are connected, resulting in erroneous wiring.

この場合、内部導体６ａと内部導体６ｃとの間の電圧値が電圧許容範囲を超えるため、電力量計１４によって誤配線が検出され、誤配線である旨が表示される。   In this case, since the voltage value between the inner conductor 6a and the inner conductor 6c exceeds the allowable voltage range, the watt-hour meter 14 detects an incorrect wiring and displays that it is an incorrect wiring.

図３は、電力量計１４の動作の例を示すフローチャートである。   FIG. 3 is a flowchart showing an example of the operation of the watt-hour meter 14.

ステップＳ１において、電圧検出部９は、第１電圧値及び第２電圧値とを検出する。   In step S1, the voltage detector 9 detects the first voltage value and the second voltage value.

ステップＳ２において、判断部１６ｂは、電圧検出部９によって検出された２つの電圧値の双方が設定された電圧許容範囲に属するか判断する。   In step S <b> 2, the determination unit 16 b determines whether both of the two voltage values detected by the voltage detection unit 9 belong to the set voltage allowable range.

２つの電圧値の双方が電圧許容範囲に属する場合、ステップＳ３において、表示部１７は、正常配線であるため、計測データ１８ａを表示する。その後、上記ステップＳ１に処理が戻る。   When both of the two voltage values belong to the allowable voltage range, in step S3, the display unit 17 displays the measurement data 18a because it is a normal wiring. Thereafter, the process returns to step S1.

一方、２つの電圧値の少なくとも一方が電圧許容範囲に属する場合、ステップＳ４において、表示部１７は、誤配線である旨を示す警告を表示する。   On the other hand, when at least one of the two voltage values belongs to the voltage allowable range, in step S4, the display unit 17 displays a warning indicating that the wiring is incorrect.

以上説明した本実施の形態において、電力量計１４は、使用電力量を計量する。この電力量計１４では、取り付け業者の誤配線などにより内部機器及び内部回路に異常な電圧が印加された場合に、表示部１７に警告が表示される。   In the present embodiment described above, the watt-hour meter 14 measures the amount of power used. In the watt-hour meter 14, a warning is displayed on the display unit 17 when an abnormal voltage is applied to the internal device or the internal circuit due to an incorrect wiring of the installation contractor.

したがって、電力量計１４の内部機器及び内部回路の損傷を防止することができ、不適切な計量動作を防止することができ、取り付け業者の誤配線による事故や誤った運用及び計量を防止することができ、安全かつ適正な電力取引を実現させることができる。   Therefore, it is possible to prevent damage to the internal devices and internal circuits of the watt-hour meter 14, to prevent inappropriate weighing operation, and to prevent accidents and incorrect operation and measurement due to incorrect wiring of the installer. It is possible to realize safe and appropriate power trading.

なお、本実施の形態では、電圧検出部９から電力演算部１５経由で判断部１６ｂに電圧値が提供されているが、例えば、直接、電圧検出部９から判断部１６ｂに電圧値が提供されるとしてもよい。   In the present embodiment, the voltage value is provided from the voltage detection unit 9 to the determination unit 16b via the power calculation unit 15. However, for example, the voltage value is directly provided from the voltage detection unit 9 to the determination unit 16b. It may be.

また、本実施の形態では、第１電圧値と第２電圧値とが電圧許容範囲に属するか否かにより誤配線を検出している。しかしながら、この検出手法は変更可能である。   In the present embodiment, erroneous wiring is detected based on whether or not the first voltage value and the second voltage value belong to the allowable voltage range. However, this detection technique can be changed.

例えば、第１電圧値のピーク値と第２電圧値のピーク値とが電圧ピーク値許容範囲に属するか否かにより誤配線を検出するとしてもよい。   For example, the miswiring may be detected based on whether or not the peak value of the first voltage value and the peak value of the second voltage value belong to the voltage peak value allowable range.

また、内部導体６ａと内部導体６ｂとの間の電圧値が、定格の２倍の電圧値に基づいて設定された許容範囲（例えば定格の２倍のプラス１０％からマイナス１０％の範囲）に属しない場合を誤配線として検出してもよい。   In addition, the voltage value between the inner conductor 6a and the inner conductor 6b is within an allowable range set based on a voltage value that is twice the rating (for example, a range of plus 10% to minus 10% that is twice the rating). You may detect the case where it does not belong as an incorrect wiring.

また、本実施の形態において、各構成要素は同様の動作を実現可能であれば配置を変更させてもよく、また各構成要素を自由に組み合わせてもよく、各構成要素を自由に分割してもよく、いくつかの構成要素を削除してもよい。   In the present embodiment, each component may be rearranged as long as the same operation can be realized, each component may be freely combined, and each component may be freely divided. Alternatively, some components may be deleted.

本実施の形態における使用量演算部１６ａ及び判断部１６ｂとは、中央演算部１６がコンピュータプログラムで特定されている処理を実行することにより実現させるとしてもよい。   The usage amount calculation unit 16a and the determination unit 16b in the present embodiment may be realized by the central processing unit 16 executing a process specified by a computer program.

本発明は、電気の供給者から電気の需要者に電気が供給された場合に、需要者の使用電力量を計量する電力量計の分野に有効である。   INDUSTRIAL APPLICABILITY The present invention is effective in the field of watt hour meters that measure the amount of power used by consumers when electricity is supplied from electricity suppliers to electricity consumers.

本発明の実施の形態に係る電力量計の一例を示すブロック図。The block diagram which shows an example of the watt-hour meter which concerns on embodiment of this invention. 電圧値と配線との関係の例を示す図。The figure which shows the example of the relationship between a voltage value and wiring. 本発明の実施の形態に係る電力量計の動作の例を示すフローチャート。The flowchart which shows the example of operation | movement of the watt-hour meter which concerns on embodiment of this invention. 従来の電力量計の一例を示すブロック図。The block diagram which shows an example of the conventional watt-hour meter. 単相３線式の配電方式の一例を示す図。The figure which shows an example of a single phase 3 wire type power distribution system.

符号の説明Explanation of symbols

１，１４…電力量計、２…電力供給設備、３…負荷、４…入力端子、５，８…配電線、５ａ，５ｂ，８ａ，８ｂ…電力線、５ｃ，８ｃ…中性線、６ａ〜６ｃ…内部導体、７…出力端子、９…電圧検出部、１０…電流検出部、１１，１５…電力演算部、１２，１６…中央演算部、１３…表示部、１６ａ…使用演算部、１６ｂ…判断部、１７…表示部、１８…記憶部、１８ａ…計測データ、１８ｂ…設定データ、１８ｃ…警告データ、１９…設定部、２０…送信部   DESCRIPTION OF SYMBOLS 1,14 ... Electricity meter, 2 ... Electric power supply equipment, 3 ... Load, 4 ... Input terminal, 5, 8 ... Distribution line, 5a, 5b, 8a, 8b ... Electric power line, 5c, 8c ... Neutral wire, 6a- 6c ... Internal conductor, 7 ... Output terminal, 9 ... Voltage detection unit, 10 ... Current detection unit, 11, 15 ... Power calculation unit, 12, 16 ... Central calculation unit, 13 ... Display unit, 16a ... Use calculation unit, 16b Determining unit, 17 ... Display unit, 18 ... Storage unit, 18a ... Measurement data, 18b ... Setting data, 18c ... Warning data, 19 ... Setting unit, 20 ... Transmission unit

Claims (4)

電力供給設備と第１配電線経由で接続される入力端子と、
負荷と第２配電線経由で接続される出力端子と、
前記入力端子と前記出力端子とを接続する接続手段と、
前記電力供給設備によって前記接続手段に対して印加される電圧値を検出する電圧検出手段と、
前記接続手段を流れる電流値を検出する電流検出手段と、
前記電圧値と前記電流値に基づいて電力値を求める電力演算手段と、
前記電力値を累積して使用電力量を求める使用量演算手段と、
前記電圧値が誤配線検出のために所定された電圧許容範囲に属するか否かを判断する判断手段と、
前記使用電力量を表示し、前記電圧値が前記電圧許容範囲に属さない場合に誤配線警告を表示する表示手段と
を具備する電力量計。 An input terminal connected to the power supply facility via the first distribution line;
An output terminal connected to the load via the second distribution line;
Connection means for connecting the input terminal and the output terminal;
Voltage detection means for detecting a voltage value applied to the connection means by the power supply facility;
Current detecting means for detecting a current value flowing through the connecting means;
Power calculating means for obtaining a power value based on the voltage value and the current value;
Usage amount calculating means for accumulating the electric power value to obtain an electric energy consumption;
Determining means for determining whether or not the voltage value belongs to a predetermined voltage allowable range for erroneous wiring detection;
A watt-hour meter comprising: display means for displaying the used electric energy and displaying an erroneous wiring warning when the voltage value does not belong to the allowable voltage range. 請求項１記載の電力量計において、
第１配電線は、第１電力線と第２電力線と中性線とを具備し、
前記接続手段は、正常に配線された場合に、前記第１電力線と接続される第１導体、前記第２電力線と接続される第２導体、前記中性線と接続される第３導体を具備し、
前記電圧許容範囲は、前記第１電力線と前記中性線との間の定格の電圧値及び前記第２電力線と前記中性線との間の定格の電圧値とを基準として設定された許容範囲であり、
前記電圧検出手段は、前記第１導体と前記第３導体との間の第１電圧値及び前記第２導体と前記第３導体との間の第２電圧値を検出し、
前記判断手段は、前記第１電圧値と前記第２電圧値について前記電圧許容範囲に属するか否かを判断し、
前記表示手段は、前記第１電圧値と前記第２電圧値とのうち少なくとも一方が前記電圧許容範囲に属さない場合に、前記第１配電線の誤接続が発生した旨を示す前記誤配線警告を表示する
ことを特徴とする電力量計。 The watt-hour meter according to claim 1,
The first distribution line includes a first power line, a second power line, and a neutral line,
The connection means includes a first conductor connected to the first power line, a second conductor connected to the second power line, and a third conductor connected to the neutral line when normally wired. And
The allowable voltage range is set based on a rated voltage value between the first power line and the neutral line and a rated voltage value between the second power line and the neutral line. And
The voltage detection means detects a first voltage value between the first conductor and the third conductor and a second voltage value between the second conductor and the third conductor;
The determining means determines whether the first voltage value and the second voltage value belong to the voltage allowable range;
The display means is the erroneous wiring warning indicating that an erroneous connection of the first distribution line has occurred when at least one of the first voltage value and the second voltage value does not belong to the allowable voltage range. A watt hour meter characterized by displaying. 請求項１又は請求項２記載の電力量計において、
前記電圧許容範囲の設定操作を受け付ける設定手段をさらに具備することを特徴とする電力量計。 In the electricity meter of Claim 1 or Claim 2,
A watt hour meter further comprising setting means for accepting a setting operation of the allowable voltage range. 請求項１乃至請求項３のいずれか１項に記載の電力量計において、
前記判断手段は、前記電圧値が前記電圧許容範囲に属さないと判断された日時情報を含む警告データを記憶し、
前記警告データを外部に送信する送信手段をさらに具備することを特徴とする電力量計。 In the electricity meter of any one of Claim 1 thru | or 3,
The determination means stores warning data including date and time information determined that the voltage value does not belong to the voltage allowable range,
A watt-hour meter further comprising transmission means for transmitting the warning data to the outside.
JP2004258642A 2004-09-06 2004-09-06 Electricity meter Expired - Fee Related JP4690680B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2004258642A JP4690680B2 (en) 2004-09-06 2004-09-06 Electricity meter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2004258642A JP4690680B2 (en) 2004-09-06 2004-09-06 Electricity meter

Publications (2)

Publication Number Publication Date
JP2006071600A true JP2006071600A (en) 2006-03-16
JP4690680B2 JP4690680B2 (en) 2011-06-01

Family

ID=36152375

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2004258642A Expired - Fee Related JP4690680B2 (en) 2004-09-06 2004-09-06 Electricity meter

Country Status (1)

Country Link
JP (1) JP4690680B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009074831A (en) * 2007-09-19 2009-04-09 Tokyo Electric Power Co Inc:The Watt-hour meter
KR100915243B1 (en) * 2007-07-19 2009-09-03 김동수 Test terminal board for watt-hour meter
JP2020051951A (en) * 2018-09-27 2020-04-02 大崎電気工業株式会社 Single-phase three-wire electronic watt-hour meter

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08251809A (en) * 1995-03-13 1996-09-27 Nissin Electric Co Ltd Tester of switch slave station
JPH09159702A (en) * 1995-12-11 1997-06-20 Toshiba Corp Electronic watt hour meter
JPH10282175A (en) * 1997-03-31 1998-10-23 Togami Electric Mfg Co Ltd Wiring path searching apparatus
JP2004108974A (en) * 2002-09-19 2004-04-08 Chubu Seiki Co Ltd Method of checking watthour meter for erroneous connection and erroneous connection checker for watthour meter
JP2004138494A (en) * 2002-10-17 2004-05-13 Toshiba Meter Techno Kk Electronic watt-hour meter

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08251809A (en) * 1995-03-13 1996-09-27 Nissin Electric Co Ltd Tester of switch slave station
JPH09159702A (en) * 1995-12-11 1997-06-20 Toshiba Corp Electronic watt hour meter
JPH10282175A (en) * 1997-03-31 1998-10-23 Togami Electric Mfg Co Ltd Wiring path searching apparatus
JP2004108974A (en) * 2002-09-19 2004-04-08 Chubu Seiki Co Ltd Method of checking watthour meter for erroneous connection and erroneous connection checker for watthour meter
JP2004138494A (en) * 2002-10-17 2004-05-13 Toshiba Meter Techno Kk Electronic watt-hour meter

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100915243B1 (en) * 2007-07-19 2009-09-03 김동수 Test terminal board for watt-hour meter
JP2009074831A (en) * 2007-09-19 2009-04-09 Tokyo Electric Power Co Inc:The Watt-hour meter
JP2020051951A (en) * 2018-09-27 2020-04-02 大崎電気工業株式会社 Single-phase three-wire electronic watt-hour meter

Also Published As

Publication number Publication date
JP4690680B2 (en) 2011-06-01

Similar Documents

Publication Publication Date Title
JP6355217B2 (en) Wireless branch circuit energy monitoring system
TWI506906B (en) Device and method for providing energy and related system
KR100947342B1 (en) Wrong wiring measurement method for digital Watt-Hour Meter
JP2006284382A (en) Electronic watthour meter
EP3376621A1 (en) Distributed power supply
JP2006204069A (en) Individual operation detecting method and individual operation detecting device
WO2011116433A1 (en) Method and apparatus for power supply fault detection
US20240103053A1 (en) Position Sensing Modules and Related Devices and Methods
CN109477869A (en) The diagnostic device of motor
JP4336134B2 (en) Private power generation system
US6246332B1 (en) System and method for detecting voltage and current imbalance in an electrical energy supply
JP5999406B2 (en) Detection device, inspection device, inspection method, and program
JP5102569B2 (en) Electricity meter
TWI489116B (en) Three-phase four-wire power meter
EP1889076A1 (en) An electricity meter
JP4690680B2 (en) Electricity meter
JP6124055B2 (en) Power measurement system
JP4208617B2 (en) Electricity meter
KR20110034199A (en) Distribution watt-hour meter having leakage-current compensator
JP5850234B2 (en) Detection device, inspection device, inspection method, and program
KR200260977Y1 (en) Electronic electric power system
JP4470809B2 (en) Electronic energy meter
KR20120074917A (en) Electronic watt-hour meter with burnout-proof
JP7411927B2 (en) Judgment system, judgment method and program
JP2005233879A (en) Single-phase three-wire system watt-hour meter equipped with line current monitoring function, and line current managing system thereof

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20070326

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20091130

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20091208

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20100204

A711 Notification of change in applicant

Free format text: JAPANESE INTERMEDIATE CODE: A712

Effective date: 20100301

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20100511

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20100707

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: 20110215

A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20110218

R150 Certificate of patent or registration of utility model

Ref document number: 4690680

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

Free format text: JAPANESE INTERMEDIATE CODE: R150

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20140225

Year of fee payment: 3

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

S531 Written request for registration of change of domicile

Free format text: JAPANESE INTERMEDIATE CODE: R313531

R350 Written notification of registration of transfer

Free format text: JAPANESE INTERMEDIATE CODE: R350

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

LAPS Cancellation because of no payment of annual fees