JPH11108974A - Voltage phase-detecting apparatus - Google Patents
Voltage phase-detecting apparatusInfo
- Publication number
- JPH11108974A JPH11108974A JP26547197A JP26547197A JPH11108974A JP H11108974 A JPH11108974 A JP H11108974A JP 26547197 A JP26547197 A JP 26547197A JP 26547197 A JP26547197 A JP 26547197A JP H11108974 A JPH11108974 A JP H11108974A
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- voltage phase
- detecting
- phase
- power
- 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.)
- Pending
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- Measuring Phase Differences (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、受変電設備に用い
られる保護装置に係わり、特に電源に対し逆潮流を発生
しうる回路を有する受電設備の保護装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a protection device used for a power receiving and transforming installation, and more particularly to a protection device for a power receiving installation having a circuit capable of generating a reverse power flow to a power supply.
【０００２】[0002]
【従来の技術】一般的に逆潮流が発生する受電設備とし
てはスポットネットワーク受電設備が知られており、電
力供給の信頼性が非常に高く、ビル用受電設備として多
く採用されている。スポットネットワーク受電設備の保
護方式は、特開平7−68624号公報に示されているよう
に、３相で構成した３回線の電源母線と、負荷例えば空
調機やエレベータ等に配電する遮断器と接続しているネ
ットワーク母線との間に、複数の受電母線を接続してい
る。この複数の受電母線の各々には１次側開閉器とネッ
トワーク変圧器とプロテクタ遮断器及び変流器が接続し
ている。2. Description of the Related Art In general, spot network power receiving equipment is known as a power receiving equipment in which a reverse power flow occurs. The reliability of power supply is very high, and it is widely used as a power receiving equipment for buildings. As shown in JP-A-7-68624, the protection method of the spot network power receiving equipment is to connect a three-phase power supply bus composed of three phases and a circuit breaker that distributes power to a load, such as an air conditioner or an elevator. A plurality of power receiving buses are connected to the network bus. A primary switch, a network transformer, a protector breaker, and a current transformer are connected to each of the plurality of power receiving buses.
【０００３】このスポットネットワーク受電設備は、何
らかの事故で電源母線から電力供給が停止する非常時を
考慮し、非常時の対応として受電系統が前停電の場合の
み非常用設備への電力を供給する目的で、非常用発電機
をネットワーク母線の一方側に接続していた。さらに、
近年、設備の効率的利用化の希望が強くなり、常用発電
機としてコージェネレーション運用への切換が要望され
ている。[0003] This spot network power receiving equipment is intended to supply power to emergency equipment only when the power receiving system is in the event of a previous power failure as a response to an emergency in consideration of an emergency when power supply from the power supply bus stops due to some accident. The emergency generator was connected to one side of the network bus. further,
In recent years, there has been a strong demand for efficient use of equipment, and there has been a demand for switching to cogeneration operation as a regular generator.
【０００４】また、従来、スポットネットワーク電源母
線や本予備電源母線など電力利用者の希望により多種多
量の電源母線が設置されてきたが、近年、電源母線の効
率運用が望まれ、これらを一括利用する必要が生じてき
た。さらにスポットネットワーク電源母線への電力供給
の信頼性を従来以上に向上させるために、例えば３回線
のスポットネットワーク電源母線を各々別の変圧器や変
電所から送電するケースがでてきた。Conventionally, a large number of power supply buses have been installed at the request of the power user, such as a spot network power supply bus and a main power supply bus. The need has arisen. Further, in order to improve the reliability of power supply to the spot network power buses more than before, for example, three spot network power buses are each transmitted from different transformers or substations.
【０００５】[0005]
【発明が解決しようとする課題】これら一括利用や別変
圧器電源母線では電源母線間の電圧差が生じ易くなり、
スポットネットワーク電源母線や本予備電源母線などの
一括利用は現在の保護装置では安全性や信頼性からみて
困難であった。In the case of such collective use and separate transformer power supply buses, a voltage difference between the power supply buses is likely to occur,
It is difficult to use the spot network power supply bus and the backup power supply bus at the same time with the current protection device in terms of safety and reliability.
【０００６】前述の目的を達成するために、電圧の位相
を検出して電力の方向を判定することができる装置とし
て、受電母線の変圧器の１次側つまり受電点に各受電母
線の位相を検出する装置と位相を判定する判定装置を設
けた受電システムが挙げられる。In order to achieve the above object, as a device capable of detecting the phase of a voltage and determining the direction of electric power, the phase of each power receiving bus is set to the primary side of the transformer of the power receiving bus, that is, to the power receiving point. There is a power receiving system provided with a detecting device and a determining device for determining a phase.
【０００７】そこで、従来の電圧検出方式として、非接
触方式とコンデンサ分圧方式の２種類の検出方式があ
る。しかしながら、前記の非接触方式では、位相検出が
不可能であり、また検出誤差も大きく、多相の影響を受
け易いという欠点がある。また、後記のコンデンサ分圧
方式においても、経時変化が生じると共に、検出装置に
よって個体差があるという欠点がある。Therefore, there are two types of conventional voltage detection systems, a non-contact system and a capacitor voltage division system. However, the above-mentioned non-contact method has a disadvantage that phase detection is impossible, a detection error is large, and the multi-phase is easily affected. In addition, the capacitor voltage dividing method described later has the disadvantage that it changes with time and there is an individual difference depending on the detection device.
【０００８】したがって、電圧位相を検出する上で、非
接触方式では位相が検出できないため不可であり、ま
た、コンデンサ分圧方式においても、検出精度として不
十分である。Therefore, in detecting the voltage phase, it is impossible to detect the phase by the non-contact method because the phase cannot be detected, and the detection accuracy is also insufficient in the capacitor voltage dividing method.
【０００９】本発明の目的は、コンデンサ分圧式におけ
る経時変化および個体差といった誤差を補正すること
で、電圧位相検出の精度を向上すると共に、受電システ
ムの信頼性の向上にある。An object of the present invention is to improve the accuracy of voltage phase detection and to improve the reliability of a power receiving system by correcting errors such as aging and individual differences in a capacitor voltage dividing method.
【００１０】[0010]
【課題を解決するための手段】この目的を解決するため
に、本発明の電圧位相検出装置は、電圧位相の補正を行
う。In order to solve this object, a voltage phase detecting device of the present invention corrects a voltage phase.
【００１１】複数の電源母線に接続し、各受電母線に開
閉器，変圧器，遮断器、及び制御・保護を行う装置を接
続した受電システムにおいて、コンデンサ分圧方式によ
り受電電圧検出を行う電圧検出部、及び電圧位相を補正
する処理部を設ける。In a power receiving system connected to a plurality of power supply buses, and a switch, a transformer, a circuit breaker, and a device for controlling / protecting each power receiving bus, a voltage detection for detecting a receiving voltage by a capacitor voltage dividing method. And a processing unit for correcting the voltage phase.
【００１２】また、電圧位相の補正を行う上で、外部信
号により検出装置間の基準電圧位相の補正を行う。In correcting the voltage phase, the reference voltage phase between the detectors is corrected by an external signal.
【００１３】もしくは、電圧位相の補正を行う上で、各
検出装置の電圧位相差が基準電圧位相に対して設定値以
下の状態が設定時間以上続いた場合に、検出装置間の基
準電圧位相の補正を行う。Alternatively, in correcting the voltage phase, when the state in which the voltage phase difference of each detection device is equal to or less than the set value with respect to the reference voltage phase continues for a set time or more, the reference voltage phase between the detection devices is changed. Make corrections.
【００１４】さらに、検出装置間の基準電圧位相を補正
する際には、各検出装置間の平均を基準電圧位相とし各
測定値との差を補正値とすることで、検出装置間の電圧
位相差の補正を行う。Further, when correcting the reference voltage phase between the detection devices, the average between the detection devices is used as the reference voltage phase, and the difference from each measured value is used as the correction value. Correct the phase difference.
【００１５】もしくは、検出装置間の基準電圧位相を補
正する際に、各検出装置間の電圧位相を比較し中央値を
基準電圧位相とし各測定値との差を補正値とすること
で、検出装置間の電圧位相差の補正を行う。Alternatively, when correcting the reference voltage phase between the detection devices, the voltage phases between the detection devices are compared, the median value is set as the reference voltage phase, and the difference from each measured value is set as the correction value. The voltage phase difference between the devices is corrected.
【００１６】または、検出装置間の電圧位相差を補正す
る際に、あらかじめ指定した検出装置の電圧位相を基準
電圧位相とし各測定値との差を補正値とすることで、検
出装置間の電圧位相差の補正を行う。Alternatively, when the voltage phase difference between the detection devices is corrected, the voltage phase between the detection devices is determined by using the voltage phase of the detection device specified in advance as a reference voltage phase and the difference from each measured value as a correction value. The phase difference is corrected.
【００１７】[0017]
【発明の実施の形態】以下、本発明の実施例について説
明する。図１は本発明により保護・制御された受電シス
テムの構成を示す図である。電力会社の電源遮断器１
１，１２，１３によって電力の供給及び保護・制御され
る母線回線１，２，３に、スポットネットワーク受電設
備の受電母線４１，４２，４３の一端が接続され、その
他端に１次側開閉器５１，５２，５３、ネットワーク変
圧器６１，６２，６３及びプロテクタ遮断器７１，７
２，７３が順次接続され、末端がネットワーク母線８に
接続される。受電母線４１，４２，４３には、各相を検
出する検出装置９１，９２，９３と、検出された位相を
処理して制御・保護を行う装置１０が接続される。そこ
で、処理装置１０において、検出装置９１，９２，９３
によって検出された位相に補正値を加えて補正処理を行
う。Embodiments of the present invention will be described below. FIG. 1 is a diagram showing a configuration of a power receiving system protected and controlled according to the present invention. Power company circuit breaker 1
One ends of power receiving buses 41, 42, and 43 of the spot network power receiving equipment are connected to bus lines 1, 2, and 3, which are supplied, protected, and controlled by the power supply 1, 12, and 13, and a primary-side switch is connected to the other end. 51, 52, 53, network transformers 61, 62, 63 and protector breakers 71, 7
2, 73 are sequentially connected, and the terminal is connected to the network bus 8. The power receiving buses 41, 42, and 43 are connected to detection devices 91, 92, and 93 that detect each phase, and a device 10 that processes and controls and protects the detected phases. Therefore, in the processing device 10, the detection devices 91, 92, 93
The correction process is performed by adding a correction value to the phase detected by.
【００１８】図２における本発明の一実施例を説明す
る。外部信号が入力された時、検出装置９１，９２，９
３によって検出された電圧位相の平均を取り、その平均
を基準電圧位相とし、その基準電圧位相と検出された各
位相の差を取り、その差を各補正値とする。そして、常
時検出される位相に補正値を加えて補正処理を行う。An embodiment of the present invention shown in FIG. 2 will be described. When an external signal is input, the detection devices 91, 92, 9
3. The average of the voltage phases detected by step 3 is taken, the average is taken as a reference voltage phase, the difference between the reference voltage phase and each of the detected phases is taken, and the difference is taken as each correction value. Then, a correction process is performed by adding a correction value to the constantly detected phase.
【００１９】図３における本発明の一実施例を説明す
る。外部信号が入力された時、検出装置９１，９２，９
３によって検出された電圧位相を比較し、その中で中央
値の位相を基準電圧位相とし、その基準電圧位相と検出
された各位相の差を取り、その差を各補正値とする。そ
して、常時検出される位相に補正値を加えて補正処理を
行う。An embodiment of the present invention shown in FIG. 3 will be described. When an external signal is input, the detection devices 91, 92, 9
The detected voltage phases are compared with each other, and the phase of the median value is set as the reference voltage phase, the difference between the reference voltage phase and each detected phase is calculated, and the difference is set as each correction value. Then, a correction process is performed by adding a correction value to the constantly detected phase.
【００２０】図４における本発明の一実施例を説明す
る。外部信号が入力された時、あらかじめ指定した検出
装置の電圧位相を基準電圧位相とし、その基準電圧位相
と検出された各位相の差を取り、その差を各補正値とす
る。そして、常時検出される位相に補正値を加えて補正
処理を行う。An embodiment of the present invention shown in FIG. 4 will be described. When an external signal is input, a voltage phase of the detection device designated in advance is set as a reference voltage phase, a difference between the reference voltage phase and each detected phase is obtained, and the difference is set as each correction value. Then, a correction process is performed by adding a correction value to the constantly detected phase.
【００２１】図５における本発明の一実施例を説明す
る。検出装置９１，９２，９３によって検出された各電
圧位相差が基準電圧位相に対して設定値以下の状態が設
定時間以上続いた場合、検出装置９１，９２，９３によ
って検出された電圧位相の平均を取り、その平均を基準
電圧位相とし、その基準電圧位相と検出された各位相の
差を取り、その差を各補正値とする。そして、常時検出
される位相に補正値を加えて補正処理を行う。An embodiment of the present invention shown in FIG. 5 will be described. When each voltage phase difference detected by the detection devices 91, 92, and 93 is less than or equal to the set value with respect to the reference voltage phase for a set time or more, the average of the voltage phases detected by the detection devices 91, 92, and 93 is obtained. And the average thereof is used as a reference voltage phase, the difference between the reference voltage phase and each detected phase is calculated, and the difference is used as each correction value. Then, a correction process is performed by adding a correction value to the constantly detected phase.
【００２２】図６における本発明の一実施例を説明す
る。検出装置９１，９２，９３によって検出された各電
圧位相差が基準電圧位相に対して設定値以下の状態が設
定時間以上続いた場合、検出装置９１，９２，９３によ
って検出された電圧位相を比較し、その中で中央値の位
相を基準電圧位相とし、その基準電圧位相と検出された
各位相の差を取り、その差を各補正値とする。そして、
常時検出される位相に補正値を加えて補正処理を行う。An embodiment of the present invention shown in FIG. 6 will be described. When each voltage phase difference detected by the detection devices 91, 92, 93 is less than or equal to the set value with respect to the reference voltage phase for a set time or more, the voltage phases detected by the detection devices 91, 92, 93 are compared. Then, the phase of the median value is set as the reference voltage phase, the difference between the reference voltage phase and each detected phase is calculated, and the difference is set as each correction value. And
A correction process is performed by adding a correction value to the phase that is constantly detected.
【００２３】図７における本発明の一実施例を説明す
る。検出装置９１，９２，９３によって検出された各電
圧位相差が基準電圧位相に対して設定値以下の状態が設
定時間以上続いた場合、あらかじめ指定した検出装置の
電圧位相を基準電圧位相とし、その基準電圧位相と検出
された各位相の差を取り、その差を各補正値とする。そ
して、常時検出される位相に補正値を加えて補正処理を
行う。An embodiment of the present invention shown in FIG. 7 will be described. When each voltage phase difference detected by the detection devices 91, 92, and 93 is equal to or less than the set value with respect to the reference voltage phase for a set time or more, the voltage phase of the detection device designated in advance is set as the reference voltage phase. The difference between the reference voltage phase and each detected phase is taken, and the difference is used as each correction value. Then, a correction process is performed by adding a correction value to the constantly detected phase.
【００２４】[0024]
【発明の効果】以上のように、従来では、検出装置間の
電圧位相を比較する際に、コンデンサ分圧方式において
も、経時変化が生じると共に、検出装置によって個体差
があるという欠点があったが、本発明によれば、検出装
置間の経時変化および個体差といった誤差を補正するこ
とができ、電圧位相検出の精度を向上すると共に、受電
システムの信頼性を向上することができる。As described above, in the prior art, when comparing the voltage phases between the detection devices, there has been a drawback that, even in the capacitor voltage dividing method, there is a change with time and there is an individual difference depending on the detection device. However, according to the present invention, it is possible to correct errors such as aging and individual differences between the detection devices, thereby improving the accuracy of voltage phase detection and the reliability of the power receiving system.
【図１】本発明の一実施例による受電システムの単線接
続図である。FIG. 1 is a single-line connection diagram of a power receiving system according to an embodiment of the present invention.
【図２】本発明の一実施例による処理装置内構成図であ
る。FIG. 2 is a configuration diagram inside a processing apparatus according to an embodiment of the present invention.
【図３】本発明の一実施例による処理装置内構成図であ
る。FIG. 3 is a configuration diagram inside a processing apparatus according to an embodiment of the present invention.
【図４】本発明の一実施例による処理装置内構成図であ
る。FIG. 4 is a configuration diagram inside a processing apparatus according to an embodiment of the present invention.
【図５】本発明の一実施例による処理装置内構成図であ
る。FIG. 5 is a configuration diagram in a processing apparatus according to an embodiment of the present invention.
【図６】本発明の一実施例による処理装置内構成図であ
る。FIG. 6 is a configuration diagram of a processing apparatus according to an embodiment of the present invention.
【図７】本発明の一実施例による処理装置内構成図であ
る。FIG. 7 is a configuration diagram of a processing apparatus according to an embodiment of the present invention.
１，２，３…電源母線、８…ネットワーク母線、１０…
処理装置、１１，１２，１３…電力会社の電源遮断器、
４１，４２，４３…受電母線、５１，５２，５３…１次
側開閉器、６１，６２，６３…ネットワーク変圧器、７
１，７２，７３…プロテクタ遮断器、９１，９２，９３
…検出装置。1, 2, 3 ... power supply bus, 8 ... network bus, 10 ...
Processing devices, 11, 12, 13 ... power circuit breakers of power companies,
41, 42, 43 ... power receiving bus, 51, 52, 53 ... primary side switch, 61, 62, 63 ... network transformer, 7
1, 72, 73 ... protector breaker, 91, 92, 93
... Detection device.
─────────────────────────────────────────────────────
────────────────────────────────────────────────── ───
【手続補正書】[Procedure amendment]
【提出日】平成９年１１月６日[Submission date] November 6, 1997
【手続補正１】[Procedure amendment 1]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】特許請求の範囲[Correction target item name] Claims
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【特許請求の範囲】[Claims]
Claims (6)
母線に開閉器，変圧器，遮断器、及び搾御・保護を行う
装置を接続した受電システムにおいて、コンデンサ分圧
方式により受電電圧検出を行う電圧検出部、及び電圧位
相を補正する処理部を有することを特徴とする電圧位相
検出装置。In a power receiving system connected to a plurality of power supply buses, and a switch, a transformer, a circuit breaker, and a device for squeezing and protecting are connected to each of the power receiving buses, a received voltage is detected by a capacitor voltage dividing method. And a processing section for correcting the voltage phase.
て、該電圧検出部の電圧位相差を外部信号により補正す
ることを特徴とする電圧位相検出装置。2. The voltage phase detecting device according to claim 1, wherein the voltage phase difference of said voltage detecting section is corrected by an external signal.
て、該電圧検出部の電圧位相差が基準電圧位相に対して
設定値以下の状態が設定時間以上続いた場合に該電圧検
出部の電圧位相差を補正することを特徴とする電圧位相
検出装置。3. The voltage phase detecting device according to claim 1, wherein when the voltage phase difference of the voltage detecting unit is less than a set value with respect to a reference voltage phase for a set time or more, the voltage detecting unit detects the voltage phase difference. A voltage phase detection device for correcting a voltage phase difference.
て、該電圧検出部の平均を基準電圧位相とし、該電圧検
出部の電圧位相差を補正することを特徴とする電圧位相
検出装置。4. The voltage phase detecting device according to claim 3, wherein an average of said voltage detecting unit is used as a reference voltage phase, and a voltage phase difference of said voltage detecting unit is corrected.
て、該電圧検出部の電圧位相を比較し中央値を基準電圧
位相とし、該電圧検出部の電圧位相差を補正することを
特徴とする電圧位相検出装置。5. The voltage phase detecting device according to claim 3, wherein the voltage phases of the voltage detecting units are compared, and a median value is set as a reference voltage phase, and a voltage phase difference of the voltage detecting unit is corrected. Voltage phase detector.
て、該電圧検出部の電圧位相をあらかじめ設定し、該電
圧位相を基準電圧位相とし、該電圧検出部の電圧位相差
を補正することを特徴とする電圧位相検出装置。6. The voltage phase detecting device according to claim 3, wherein a voltage phase of said voltage detecting section is set in advance, said voltage phase is used as a reference voltage phase, and a voltage phase difference of said voltage detecting section is corrected. A voltage phase detection device characterized by the above-mentioned.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26547197A JPH11108974A (en) | 1997-09-30 | 1997-09-30 | Voltage phase-detecting apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26547197A JPH11108974A (en) | 1997-09-30 | 1997-09-30 | Voltage phase-detecting apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH11108974A true JPH11108974A (en) | 1999-04-23 |
Family
ID=17417638
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26547197A Pending JPH11108974A (en) | 1997-09-30 | 1997-09-30 | Voltage phase-detecting apparatus |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH11108974A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7094992B1 (en) * | 2005-07-25 | 2006-08-22 | Anton Wray | Apparatus for storing and warming a plurality of wipes |
| WO2012138340A1 (en) * | 2011-04-07 | 2012-10-11 | Hewlett-Packard Development Company, L.P. | Systems and methods for determining a power phase and/or a phase rotation |
| CN103472302A (en) * | 2013-09-16 | 2013-12-25 | 宁夏隆基宁光仪表有限公司 | Method for using one-phase photovoltaic grid-connected inverter to detect network voltage phase |
-
1997
- 1997-09-30 JP JP26547197A patent/JPH11108974A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7094992B1 (en) * | 2005-07-25 | 2006-08-22 | Anton Wray | Apparatus for storing and warming a plurality of wipes |
| WO2012138340A1 (en) * | 2011-04-07 | 2012-10-11 | Hewlett-Packard Development Company, L.P. | Systems and methods for determining a power phase and/or a phase rotation |
| CN103443640A (en) * | 2011-04-07 | 2013-12-11 | 惠普发展公司，有限责任合伙企业 | Systems and methods for determining a power phase and/or a phase rotation |
| CN103443640B (en) * | 2011-04-07 | 2015-10-14 | 惠普发展公司，有限责任合伙企业 | For determining the system and method for power phase and/or phase rotating |
| CN103472302A (en) * | 2013-09-16 | 2013-12-25 | 宁夏隆基宁光仪表有限公司 | Method for using one-phase photovoltaic grid-connected inverter to detect network voltage phase |
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