JP2001128363A - Mobile power-supply apparatus - Google Patents
Mobile power-supply apparatusInfo
- Publication number
- JP2001128363A JP2001128363A JP30521199A JP30521199A JP2001128363A JP 2001128363 A JP2001128363 A JP 2001128363A JP 30521199 A JP30521199 A JP 30521199A JP 30521199 A JP30521199 A JP 30521199A JP 2001128363 A JP2001128363 A JP 2001128363A
- Authority
- JP
- Japan
- Prior art keywords
- power supply
- output
- load
- phase
- contact voltage
- 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
Links
Landscapes
- Stand-By Power Supply Arrangements (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、配電線工事等の際
に、移動電源車の発電機の出力を区分開閉器の負荷側に
無停電で給電できるようにし、しかも配電線工事が終了
した後に負荷側の配電線から無停電で発電機の出力を切
り離すことができる移動電源装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention provides an uninterruptible power supply for the output of a generator of a mobile power supply vehicle to the load side of a segment switch when a distribution line is constructed. The present invention relates to a mobile power supply device capable of disconnecting the output of a generator without interruption from a distribution line on the load side later.
【０００２】[0002]
【従来の技術】特開平８−３３２３８号公報には、配電
線の電源側に非接触型電圧センサを設け、この非接触方
電圧センサの出力を光ファイバケーブルを介して位相同
期表示装置に送信し、位相同期表示装置から離れた場所
にある移動電源車内の位相移動追従型並列装置と位相同
期表示装置との間を通信ケーブルを用いて接続した移動
電源装置が開示されている。2. Description of the Related Art JP-A-8-33238 discloses a non-contact type voltage sensor provided on a power supply side of a distribution line, and an output of the non-contact type voltage sensor is transmitted to a phase-synchronous display device via an optical fiber cable. Further, a mobile power supply device is disclosed in which a phase shift tracking parallel device and a phase synchronous display device in a mobile power supply vehicle located at a location distant from the phase synchronous display device are connected using a communication cable.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら従来の装
置では、区分開閉器が装着された電柱の近くに移動用電
源車を停車させることができる広い空き地や道路が無け
れば、その電柱から離れかつ区分開閉器よりも負荷側に
位置する配電線の近くで移動電源車を停車させることが
できる広い空き地や道路を見つけて、そこに移動電源車
を停車させることになる。しかしながらこのような状態
では、長い通信ケーブルを敷設する作業が必要になるだ
けでなく、長い通信ケーブルを敷設した区間にガードマ
ンを配置しなければならない。However, in the conventional apparatus, if there is no large vacant lot or road where the moving power supply vehicle can be stopped near the utility pole on which the sorting switch is mounted, the device is separated from the utility pole and separated from the utility pole. A large empty space or road where the mobile power supply vehicle can be stopped is found near the distribution line located on the load side of the switch, and the mobile power supply vehicle is stopped there. However, in such a state, not only the work of laying a long communication cable is required, but also a guardman must be arranged in a section where the long communication cable is laid.
【０００４】そこで出願人は、特願平９−３２１４５１
号により、無線通信を利用することを提案した。しかし
ながらこの先願では、区分開閉器の負荷側の情報だけを
検出してこの情報を移動電源車に送信し、移動電源車側
に設けた処理装置で同期検相を行っている。区分開閉器
の負荷側の情報は、高圧ケーブルを介して入力される。
そのため区分開閉器の電源側情報と負荷側情報が移動電
源車側に入力されるまので時間には、無線入力と有線入
力とが原因になって生じる時間遅れが生じる。その結
果、従来の装置では、同期検相精度が悪くなる問題が生
じる。Accordingly, the applicant has filed Japanese Patent Application No. 9-321451.
Proposed to use wireless communication. However, in this prior application, only the information on the load side of the segmented switch is detected, this information is transmitted to the mobile power supply vehicle, and synchronous phase detection is performed by a processing device provided on the mobile power supply vehicle side. Information on the load side of the segmented switch is input via a high-voltage cable.
For this reason, there is a time delay before the power-supply-side information and the load-side information of the segmented switch are input to the mobile power-supply vehicle side due to the wireless input and the wired input. As a result, in the conventional device, there is a problem that the synchronization phase detection accuracy is deteriorated.
【０００５】本発明の目的は、移動電源車の停車場所が
限定されず、しかも同期検相精度を高くすることができ
る移動電源装置を提供することにある。[0005] It is an object of the present invention to provide a mobile power supply device in which a stop position of a mobile power supply vehicle is not limited, and in which synchronization phase detection accuracy can be increased.
【０００６】[0006]
【課題を解決するための手段】本発明は、発電機を搭載
した移動用電源車の発電機の出力により区分開閉器を有
する配電線の負荷側を無停電で救済するための移動用電
源装置を改良の対象とする。SUMMARY OF THE INVENTION The present invention relates to a mobile power supply apparatus for relieving the load side of a distribution line having a segmented switch without interruption by the output of a generator of a mobile power supply vehicle equipped with a generator. Are targeted for improvement.
【０００７】本発明においては、配電線の区分開閉器よ
りも電源側に電源側非接触電圧センサを設け、配電線の
区分開閉器よりも負荷側に負荷側非接触電圧センサを設
ける。また配電線に非接触電流センサを設ける。非接触
電流センサは、配電線の電流を測定できればよいため、
区分開閉器の電源側及び負荷側の少なくとも一方に設け
ればよい。三相配電線であれば、少なくとも二相の配電
線に対してそれぞれ非接触電流センサを設ければよい。
ここで非接触電圧センサまたは非接触電流センサとは、
配電線のケーブルの上に装着するだけで、配電線の芯線
とは接触することなく、配電線の電圧または電流を測定
するタイプの電圧センサまたは電流センサである。理論
的には、配電線が三相あれば、各相ごとに電圧センサを
装着することになる。なお電源側に設ける非接触電流セ
ンサを、二相の電流を測定できるように２つ設けた場合
には、残りの相の電流は、測定した二相の電流から演算
により求めればよい。In the present invention, a power supply side non-contact voltage sensor is provided on the power supply side of the distribution line section switch, and a load side non-contact voltage sensor is provided on the load side of the distribution line section switch. A non-contact current sensor is provided on the distribution line. Since the non-contact current sensor only needs to be able to measure the current of the distribution line,
It may be provided on at least one of the power supply side and the load side of the sectional switch. In the case of a three-phase distribution line, a non-contact current sensor may be provided for at least two-phase distribution lines.
Here, the non-contact voltage sensor or the non-contact current sensor is
A voltage sensor or a current sensor of a type that measures the voltage or current of a distribution line only by being mounted on the cable of the distribution line without contacting the core wire of the distribution line. In theory, if the distribution line has three phases, a voltage sensor will be mounted for each phase. In the case where two non-contact current sensors provided on the power supply side are provided so as to be able to measure two-phase currents, the remaining phase currents may be obtained by calculation from the measured two-phase currents.
【０００８】本発明では、更に区分開閉器の近くに無線
式同期検相器を配置する。この無線式同期検相器は、電
源側非接触電圧センサの出力と負荷側非接触電圧センサ
の出力とに基づいて少なくとも電源側と負荷側の配電線
の電圧の検相を行って、その結果を無線で移動用電源車
に送信し且つ非接触電流センサ及び電源側非接触電圧セ
ンサの出力を無線で移動用電源車に送信するものであ
る。従来は、この同期検相器に相当するものが、移動用
電源車に搭載されていたが、本発明で用いる移動用電源
車には同期検相器は搭載されておらず、無線式同期検相
器との間で無線で交信する無線通信装置と無線式同期検
相器の出力に基づいて発電機の出力調整を行う制御装置
とが搭載されている。In the present invention, a wireless synchronous phase detector is further arranged near the segment switch. This wireless synchronous phase detector detects at least the voltage of the power supply side and the load side distribution line based on the output of the power supply side non-contact voltage sensor and the output of the load side non-contact voltage sensor, and as a result, Is wirelessly transmitted to the mobile power supply vehicle, and the outputs of the non-contact current sensor and the power supply side non-contact voltage sensor are wirelessly transmitted to the mobile power supply vehicle. Conventionally, the equivalent of the synchronous phase detector is mounted on a mobile power supply vehicle. However, the mobile power supply vehicle used in the present invention does not have a synchronous phase detector, and is a wireless synchronous detector. A wireless communication device that wirelessly communicates with the phaser and a control device that adjusts the output of the generator based on the output of the wireless synchronous phase detector are mounted.
【０００９】本発明によれば、電源側非接触電圧センサ
の出力と負荷側非接触電圧センサの出力とに基づいて無
線式同期検相器が、少なくとも電源側と負荷側の配電線
の電圧の検相を行い、その結果と非接触電流センサの出
力及び電源側非接触電圧センサの出力を無線で移動用電
源車に送信する。同期確認は、同期検相器または移動電
源車の制御装置のいずれかで行えばよい。各センサの出
力が無線通信装置により制御装置に伝送されているた
め、同期検相器と移動電源車との間に配線をすることな
く、簡単に且つ確実に同期検相と同期確認とを行うこと
ができる。特に移動電源車側に電源側非接触電圧センサ
の出力と発電機の出力とに基づいて同期確認を行う同期
判定手段を設けて同期確認を行うと、同期確認に時間遅
れが生じることがない。同期判定手段は、制御装置に内
蔵させてもよいし、制御装置とは別に設けてもよい。同
期判定手段を制御装置と別に設ける場合に、無線通信装
置と同期判定手段とを１つのユニットとして構成する
と、既製の移動電源車に本発明を適用することが容易に
なる利点がある。According to the present invention, the wireless synchronous phase detector detects at least the voltages of the power supply side and the load side distribution lines based on the output of the power supply side non-contact voltage sensor and the output of the load side non-contact voltage sensor. The phase detection is performed, and the result, the output of the non-contact current sensor, and the output of the non-contact voltage sensor on the power supply side are wirelessly transmitted to the mobile vehicle. The synchronization confirmation may be performed by either the synchronous phase detector or the control device of the mobile power supply vehicle. Since the output of each sensor is transmitted to the control device by the wireless communication device, the synchronous phase detection and the synchronization confirmation can be easily and reliably performed without wiring between the synchronous phase detector and the mobile power supply vehicle. be able to. In particular, when the mobile power supply vehicle is provided with a synchronization determination means for performing synchronization confirmation based on the output of the power supply side non-contact voltage sensor and the output of the generator, the synchronization confirmation is not delayed. The synchronization determination means may be built in the control device, or may be provided separately from the control device. When the synchronization determination unit is provided separately from the control device, if the wireless communication device and the synchronization determination unit are configured as one unit, there is an advantage that the present invention can be easily applied to an off-the-shelf mobile power supply vehicle.
【００１０】また同期検相器側で同期確認を行って、そ
の結果を表示部に表示せる構成を採用すると、区分開閉
器を操作する作業者に事前に区分開閉器に投入時期が近
づいたことを予告することができる。[0010] In addition, if a configuration is adopted in which the synchronization is detected on the side of the synchronous phase detector and the result is displayed on the display unit, the operator who operates the divisional switch approaches the divisional switch in advance. Can be announced.
【００１１】しかしながら発電機の出力電圧の相回転は
変わることがないため、発電機の出力の相回転を予め記
憶しておけば、負荷側には電圧の同期確認のために１つ
の負荷側非接触電圧センサを設ければよいことになる。
これを実現するためには、三相配電線の区分開閉器より
も電源側に３つの電源側非接触電圧センサを設け、三相
配電線の少なくとも二相の配電線にそれぞれ非接触電流
センサを設け、三相配電線の区分開閉器よりも負荷側の
一相の配電線に１つの負荷側非接触電圧センサを設け
る。そして無線式同期検相器を、負荷側非接触電圧セン
サの出力と負荷側非接触電圧センサが装着された相に対
応する１つの電源側非接触電圧センサの出力とに基づい
て電源側と負荷側の電圧の同期確認を行ってその結果を
表示部に表示し、予め記憶した発電機の出力の相回転と
前記の電源側非接触電圧センサの出力とに基づいて電源
側と負荷側の電圧の検相を行い、その結果を無線で移動
用電源車に送信し、更に非接触電流センサ及び電源側非
接触電圧センサの出力を無線で移動用電源車に送信する
ように構成する。このようにすると、少ない部品点数で
少なくとも検相を行うことができる利点がある。具体的
な無線式同期検相器は、負荷側非接触電圧センサの出力
と負荷側非接触電圧センサが装着された相に対応する１
つの電源側非接触電圧センサの出力とに基づいて電源側
と負荷側の電圧の同期確認を行う同期判定手段と、発電
機の出力の相回転を記憶する相回転記憶手段と、相回転
記憶手段に記憶された相回転と３つの電源側非接触電圧
センサの出力とに基づいて電源側と負荷側の電圧の検相
を行う相回転判定手段とを備えている。However, since the phase rotation of the output voltage of the generator does not change, if the phase rotation of the output of the generator is stored in advance, one load-side non-rotation side is provided on the load side to confirm the voltage synchronization. What is necessary is just to provide a contact voltage sensor.
In order to realize this, three power supply side non-contact voltage sensors are provided on the power supply side of the three-phase distribution line segment switch, and non-contact current sensors are provided on at least two-phase distribution lines of the three-phase distribution line, One load-side non-contact voltage sensor is provided on a one-phase distribution line on the load side of the three-phase distribution line segment switch. The wireless synchronous phase detector is connected to the power supply and the load based on the output of the load-side non-contact voltage sensor and the output of one power-supply-side non-contact voltage sensor corresponding to the phase on which the load-side non-contact voltage sensor is mounted. The synchronization of the voltage on the power side is performed, the result is displayed on the display unit, and the voltage on the power supply side and the load side based on the phase rotation of the output of the generator stored in advance and the output of the non-contact voltage sensor on the power supply side. , And the result is wirelessly transmitted to the mobile power supply vehicle, and the outputs of the non-contact current sensor and the power supply side non-contact voltage sensor are wirelessly transmitted to the mobile power supply vehicle. This has the advantage that at least phase detection can be performed with a small number of parts. Specifically, the wireless synchronous phase detector detects the output of the load-side non-contact voltage sensor and the phase corresponding to the phase on which the load-side non-contact voltage sensor is mounted.
Synchronization determining means for confirming the synchronization of the voltages on the power supply side and the load side based on the outputs of the two non-contact voltage sensors on the power supply side, phase rotation storage means for storing the phase rotation of the output of the generator, and phase rotation storage means And phase rotation determining means for detecting the phases of the voltages on the power supply side and the load side based on the phase rotation stored in the power supply and the outputs of the three non-contact voltage sensors on the power supply side.
【００１２】制御装置に、無線通信装置から送信された
電源側非接触電圧センサの出力と発電機の出力とに基づ
いて、同期判定を行う同期判定手段を内蔵させる場合で
も、また同期判定手段を制御装置とは別に設ける場合で
も、制御装置を発電機の周波数調整が完了すると無線通
信装置を介して無線式同期検相器に区分開閉器を開閉す
るための開閉指令を自動または手動で出力するように構
成するのが好ましい。この場合、無線式同期検相器は、
開閉指令が入力されると区分開閉器を開状態または閉状
態にする時期が到来したことを表示部に表示する。これ
により無線式同期検相器の表示部の表示にしたがって、
作業者が区分開閉器を現場で確実に操作することができ
る。前述のとおり、同期検相器側でも同期確認を行って
その結果を表示部に表示するようにすると、作業者は事
前に区分開閉器の投入時期の到来を知ることができる。[0012] Even when the control device incorporates synchronization determination means for performing synchronization determination based on the output of the power supply side non-contact voltage sensor and the output of the generator, transmitted from the wireless communication device, the synchronization determination means is also provided. Even if provided separately from the control device, the control device automatically or manually outputs an open / close command for opening / closing the segmented switch to the wireless synchronous phase detector via the wireless communication device when the frequency adjustment of the generator is completed. It is preferable to configure as follows. In this case, the wireless synchronous phase detector
When an open / close command is input, the display unit indicates that it is time to open or close the sectional switch. Thus, according to the display on the display of the wireless synchronous phase detector,
The operator can reliably operate the section switch on site. As described above, if the synchronization is detected on the synchronous phase detector side and the result is displayed on the display unit, the operator can know in advance the timing of turning on the sectional switch.
【００１３】[0013]
【発明の実施の形態】以下図面を参照して本発明の実施
の形態を詳細に説明する。図１は、本発明の移動用電源
装置の第１の実施の形態の構成を概略的に示すブロック
図である。同図において、１はトラックに発電設備が実
装された移動電源車である。移動電源車１に実装された
発電設備は、ディーゼルエンジンなどの内燃機関によっ
て駆動される発電機３と、内燃機関を制御することによ
り発電機３の出力を調整する制御装置５と、発電機３の
出力側に配置された遮断器７と、遮断器７の開閉を制御
する指令や後述する無線式同期検相器１５に送信する開
閉指令を出力する指令発生手段９と、後述する無線式同
期検相器１５から無線で送信される同期検相結果を受信
し、指令発生手段９から出力された開閉指令を無線式同
期検相器１５に無線で送信する無線通信装置１１とを備
えている。発電機３の出力は遮断器７と高圧ケーブルＨ
Ｃを介して区分開閉器１３の負荷側の配電線に供給され
る。Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a block diagram schematically showing the configuration of the first embodiment of the mobile power supply device of the present invention. In FIG. 1, reference numeral 1 denotes a mobile power supply vehicle in which power generation equipment is mounted on a truck. The power generation equipment mounted on the mobile power supply vehicle 1 includes a generator 3 driven by an internal combustion engine such as a diesel engine, a control device 5 for adjusting the output of the generator 3 by controlling the internal combustion engine, and a generator 3. And a command generating means 9 for outputting a command for controlling the opening and closing of the circuit breaker 7 and an opening / closing command to be transmitted to a wireless synchronous phase detector 15 to be described later, and a wireless synchronous A wireless communication device that receives a synchronous phase detection result wirelessly transmitted from the phase detector and wirelessly transmits an opening / closing command output from the command generating means to the wireless synchronous phase detector; . The output of the generator 3 is a circuit breaker 7 and a high-voltage cable H
It is supplied to the distribution line on the load side of the segmented switch 13 via C.
【００１４】無線式同期検相器１５は、工事を行う際
に、電柱に取り付けられた区分開閉器１３の近くに設置
される。また区分開閉器１３よりも電源側に位置する配
電線Ｕに対しては、電源側非接触電圧センサ１７が設け
られ、配電線Ｖ及びＷに対しては、電源側非接触電圧セ
ンサと非接触電流センサとが組み合わせられた非接触電
圧・電流センサ１６Ｖ，１６Ｗが設けられている。また
配電線の区分開閉器よりも負荷側に三相分の負荷側非接
触電圧センサ１９Ｕ，１９Ｖ，１９Ｗが設けられてい
る。このような負荷側非接触電圧センサとしては、株式
会社戸上電機がＳＮＳ−Ａ−Ａの製品番号で製造販売す
る電圧センサを用いることができる。電源側非接触電圧
センサ１７及び非接触電圧・電流センサ１６Ｖ，１６Ｗ
並びに負荷側非接触電圧センサ１９Ｕ，１９Ｖ，１９Ｗ
の出力は、無線式同期検相器１５の同期検相部２１にそ
れぞれ入力される。The radio synchronous phase detector 15 is installed near the switchgear 13 attached to the telephone pole when performing construction work. Further, a power supply side non-contact voltage sensor 17 is provided for the distribution line U located closer to the power supply side than the sectional switch 13, and a non-contact with the power supply side non-contact voltage sensor is provided for the distribution lines V and W. Non-contact voltage / current sensors 16V and 16W combined with a current sensor are provided. Further, load-side non-contact voltage sensors 19U, 19V and 19W for three phases are provided on the load side of the distribution line switch. As such a load-side non-contact voltage sensor, a voltage sensor manufactured and sold by Togami Electric Co., Ltd. under the product number of SNS-AA can be used. Power supply side non-contact voltage sensor 17 and non-contact voltage / current sensor 16V, 16W
And load-side non-contact voltage sensor 19U, 19V, 19W
Are input to the synchronous phase detector 21 of the wireless synchronous phase detector 15, respectively.
【００１５】同期検相部２１は、電源側非接触電圧セン
サ１７及び非接触電圧・電流センサ１６Ｖ，１６Ｗ及び
負荷側非接触電圧センサ１９Ｕ，１９Ｖ，１９Ｗの出力
から、区分開閉器の両側の各相の位相を検出し、検出と
同期確認とを行いその結果を表示部２５に表示し、その
険相結果と電源側非接触電圧センサ１７及び非接触電圧
・電流センサ１６Ｖ，１６Ｗ及び負荷側非接触電圧セン
サ１９Ｕ，１９Ｖ，１９Ｗの出力を無線通信装置２３を
介して移動電源車１の無線通信装置１１に送信する。具
体的には、同期検相部２１は、電源側と負荷側で相回転
の検出を行い、いずれかの相が欠相状態である場合に
は、表示部２５において発光手段等の表示手段を用いて
表示し、相回転が異なる場合（反相の場合）にもその旨
を表示部２５に表示し、相回転，同相及び充電状態のい
ずれもが良好な状態であればその旨を表示部２５に表示
する。それと同時に、険相結果を無線通信装置２３から
移動電源車１に送信する。なおこの結果と一緒に、無線
式同期検相器１５は、移動電源車１側に、相電流、相電
圧、周波数、位相差、発電機の出力の周波数及び電圧情
報、区分開閉器の状態等の情報を送信する。これに対し
て移動電源車１側からは、発電機３の出力電圧や遮断器
７の状態に関する情報が無線通信装置１１から無線式同
期検相器１５へと送信される。The synchronous phase detector 21 detects the outputs of the power supply side non-contact voltage sensor 17, the non-contact voltage / current sensors 16V and 16W and the load side non-contact voltage sensors 19U, 19V and 19W from The phase of the phase is detected, the detection and the synchronization confirmation are performed, and the result is displayed on the display unit 25. The result of the steep phase and the non-contact voltage sensor 17 on the power supply side, the non-contact voltage / current sensors 16V and 16W, and the non-contact The outputs of the contact voltage sensors 19U, 19V, and 19W are transmitted to the wireless communication device 11 of the mobile power supply vehicle 1 via the wireless communication device 23. Specifically, the synchronous phase detector 21 detects the phase rotation on the power supply side and the load side, and when any one of the phases is in the open phase state, the display unit 25 displays the display means such as the light emitting means. When the phase rotation is different (in the case of the opposite phase), the fact is displayed on the display unit 25. If all of the phase rotation, the in-phase, and the charged state are in a good state, the fact is displayed on the display unit. 25. At the same time, the rugged result is transmitted from the wireless communication device 23 to the mobile power supply vehicle 1. Along with this result, the wireless synchronous phase detector 15 transmits the phase current, the phase voltage, the frequency, the phase difference, the frequency and voltage information of the generator output, the state of the sectional switch, etc. Send the information. On the other hand, information on the output voltage of the generator 3 and the state of the circuit breaker 7 is transmitted from the mobile power supply vehicle 1 to the wireless synchronous phase detector 15 from the wireless communication device 11.
【００１６】無停電工事を行う場合には，高圧ケーブル
ＨＣを配電線の負荷側に接続した後、発電機３を始動さ
せる。このとき，遮断器７は開いている。そして無線式
同期検相器１５から非接触電圧センサ１７及び非接触電
圧・電流センサ１６Ｖ，１６Ｗで得た情報が無線通信装
置２３から移動電源車１の無線通信装置１１に送信さ
れ、制御装置５はこの情報に基づいて負荷の状態や電源
電流の周波数等を知る。制御装置５は無線通信装置１１
から得た電源側の電圧情報と発電機３の出力情報とに基
づいて、発電機３の出力の周波数を調整して発電機３の
出力の位相を電源側の位相と所定の許容範囲内で入れ
る。発電機の出力の周波数調整が終了したこと、即ち同
期が取れたことは制御装置５内に内蔵した同期確認手段
で確認する。そして制御装置は、発電機３の出力の周波
数調整が終了すると、遮断器７を閉じて発電機３から負
荷へ電力を供給する。次に、制御装置５は無線通信装置
を介して区分開閉器１３を開く準備ができたことを示す
開指令を無線通信装置１１を介して自動または手動操作
により無線式同期検相器１５に出力する。無線式同期検
相器１５は、制御装置５から開指令が入力されると区分
開閉器１３を開く準備ができたことを表示し、作業者は
手動で区分開閉器１３を開状態にし、以後は発電機３の
みから負荷に給電が行われる。When performing uninterrupted work, the generator 3 is started after the high-voltage cable HC is connected to the load side of the distribution line. At this time, the circuit breaker 7 is open. Then, information obtained by the non-contact voltage sensor 17 and the non-contact voltage / current sensors 16V and 16W from the wireless synchronous phase detector 15 is transmitted from the wireless communication device 23 to the wireless communication device 11 of the mobile power supply vehicle 1, and the control device 5 Knows the state of the load and the frequency of the power supply current based on this information. The control device 5 is a wireless communication device 11
The frequency of the output of the generator 3 is adjusted based on the voltage information on the power supply side and the output information of the generator 3 obtained from the above, so that the phase of the output of the generator 3 is within a predetermined allowable range from the phase of the power supply Put in. Completion of the frequency adjustment of the output of the generator, that is, synchronization is confirmed by a synchronization confirmation unit built in the control device 5. Then, when the frequency adjustment of the output of the generator 3 is completed, the controller closes the circuit breaker 7 and supplies power from the generator 3 to the load. Next, the control device 5 outputs an opening command indicating that the section switch 13 is ready to be opened via the wireless communication device to the wireless synchronous phase detector 15 automatically or manually via the wireless communication device 11. I do. When an open command is input from the control device 5, the wireless synchronous phase detector 15 indicates that the section switch 13 is ready to be opened, and the operator manually sets the section switch 13 to the open state. Power is supplied to the load only from the generator 3.
【００１７】工事が終了した後は、無線式同期検相器１
５が同期検相動作を行い、同期検相結果を表示部２５に
表示させる。移動電源車１側では無線通知装置１１で受
信した電源非接触電圧センサ１７及び非接触電圧・電流
センサ１６Ｖ，１６Ｗの出力と発電機３の出力とに基づ
いて内蔵する同期判定手段により、電源側と発電機３の
同期確認を行い。その確認結果に基づいて、制御装置５
は発電機３の周波数を調整して発電機３の出力の位相と
電源側の位相との差が所定の許容範囲内に入るようにす
る。発電機３の周波数調整が終了すると（同期が取れた
ことを確認すると）、制御装置５は無線通信装置１１を
介して区分開閉器１３を閉状態にできることを示す閉指
令を自動または手動操作により無線式同期検相器１５に
送信する。無線式同期検相器１５は、この閉指令が入力
されたことを表示部２５に表示する。この閉指令が入力
されたことが表示部２５に表示されると、作業者は手動
で区分開閉器１３を閉状態にし、以後は電源側から区分
開閉器１３を介して負荷に給電が行われる。区分開閉器
１３が閉じられたことは、手動操作により無線式同期検
相器１５の無線通信装置２３から移動電源車１の無線通
信装置１１へと送信される。これを受けて指令発生手段
９は、遮断器７を開く指令を遮断器７に出力して遮断器
７を開く、その後制御装置５は発電機３を停止させる指
令を出力して発電機３を停止させる。そして最後に、負
荷側高圧ケーブルＨＣを撤去する。After the construction is completed, the wireless synchronous phase detector 1
5 performs the synchronous phase detection operation, and causes the display unit 25 to display the synchronous phase detection result. On the side of the mobile power supply vehicle 1, the synchronization determination means built in based on the outputs of the power supply non-contact voltage sensor 17 and the non-contact voltage / current sensors 16 V and 16 W received by the wireless notification device 11 and the output of the generator 3, And generator 3 are synchronized. Based on the confirmation result, the control device 5
Adjusts the frequency of the generator 3 so that the difference between the phase of the output of the generator 3 and the phase on the power supply side falls within a predetermined allowable range. When the frequency adjustment of the generator 3 is completed (when it is confirmed that synchronization has been achieved), the control device 5 issues a close command indicating that the sectional switch 13 can be closed through the wireless communication device 11 automatically or manually. The signal is transmitted to the wireless synchronous phase detector 15. The wireless synchronous phase detector 15 displays on the display unit 25 that the close command has been input. When the display unit 25 displays that the close command has been input, the operator manually closes the sectional switch 13, and thereafter, power is supplied to the load from the power supply via the sectional switch 13. . The fact that the segment switch 13 is closed is transmitted from the wireless communication device 23 of the wireless synchronous phase detector 15 to the wireless communication device 11 of the mobile power supply vehicle 1 by manual operation. In response to this, the command generating means 9 outputs a command to open the circuit breaker 7 to the circuit breaker 7 and opens the circuit breaker 7. Thereafter, the control device 5 outputs a command to stop the generator 3 and Stop. Finally, the load-side high-voltage cable HC is removed.
【００１８】図２は、本発明の第２の実施の形態の構成
を概略的に示すブロック図である。この実施の形態が、
図１に示した実施の形態と異なるのは、負荷側非接触電
圧センサ１９が配電線のＵ相に対してだけ設けられてい
る点と、この相違に基づいて同期検相部２１´の構成を
変えている点である。そもそも負荷側非接触電圧センサ
１９は，発電機３の出力電圧を検出する目的で装着され
るものである。発電機３の出力の相回転は、発電機３を
駆動するディーゼルエンジン等の駆動源の回転方向が変
わらない限り常に同じである。また発電機の出力の位相
関係が異なることも常識的にはない。この点を考慮し
て、この実施の形態では、負荷側非接触電圧センサ１９
をU相にだけ取付けている。そして同期検相部２１´を
負荷側非接触電圧センサ１９の出力と負荷側非接触電圧
センサ１９が装着されたU相に対応する電源側非接触電
圧センサ１７の出力とに基づいて電源側と負荷側の電圧
の同期確認を行う同期判定手段２１´ａと、発電機３の
出力の相回転を記憶する相回転記憶手段２１´ｃと、相
回転記憶手段２１´ｃに記憶された相回転と３つの電源
側非接触電圧センサ１７及び非接触電圧・電流センサ１
６Ｖ，１６Ｗの出力とに基づいて電源側と負荷側の電圧
の検相を行う相回転判定手段２１´ｂとを備えている。
その他の構成は、図１の実施の形態の構成と同じであ
る。この例では、発電機３の出力の相回転の検出を行わ
ずに、相回転記憶手段２１´ｃに記憶されている相回転
と３つの電源側非接触電圧センサ１７及び非接触電圧・
電流センサ１６Ｖ，１６Ｗの出力の相回転の方向が同じ
であるか否かを判定しているので、負荷側非接触電圧セ
ンサ１９が１つで済む。相回転の方向が一致しているこ
とを相回転検出手段２１´ｂが検出している状態におい
て、同期判定手段２１´ａは負荷側非接触電圧センサ１
９で検出した負荷側のU相の電圧と電源側非接触電圧セ
ンサ１７で検出した電源側のU相の電圧の位相差が、許
容できる範囲内にあるか否かを判定し、その結果を表示
部２５に出力する。FIG. 2 is a block diagram schematically showing the configuration of the second embodiment of the present invention. This embodiment is
The difference from the embodiment shown in FIG. 1 is that the load-side non-contact voltage sensor 19 is provided only for the U phase of the distribution line, and the configuration of the synchronous phase detector 21 ′ is based on this difference. The point is changing. In the first place, the load-side non-contact voltage sensor 19 is mounted for the purpose of detecting the output voltage of the generator 3. The phase rotation of the output of the generator 3 is always the same unless the rotation direction of a drive source such as a diesel engine that drives the generator 3 changes. It is not common sense that the phase relationship between the generator outputs is different. In consideration of this point, in this embodiment, the load-side non-contact voltage sensor 19
Is attached only to the U phase. Then, the synchronous phase detector 21 'is connected to the power supply side based on the output of the load-side non-contact voltage sensor 19 and the output of the power supply-side non-contact voltage sensor 17 corresponding to the U-phase to which the load-side non-contact voltage sensor 19 is mounted. Synchronization determination means 21'a for confirming the synchronization of the voltage on the load side, phase rotation storage means 21'c for storing the phase rotation of the output of the generator 3, and phase rotation stored in the phase rotation storage means 21'c. And three power supply side non-contact voltage sensors 17 and non-contact voltage / current sensor 1
Phase rotation determining means 21'b for detecting the phases of the voltages on the power supply side and the load side based on the outputs of 6V and 16W is provided.
Other configurations are the same as those of the embodiment of FIG. In this example, without detecting the phase rotation of the output of the generator 3, the phase rotation stored in the phase rotation storage means 21'c and the three non-contact voltage sensors 17 and the non-contact voltage
Since it is determined whether the directions of the phase rotations of the outputs of the current sensors 16V and 16W are the same, only one load-side non-contact voltage sensor 19 is required. In the state where the phase rotation detecting means 21'b detects that the directions of the phase rotations match, the synchronization determining means 21'a uses the load side non-contact voltage sensor 1
It is determined whether or not the phase difference between the U-phase voltage on the load side detected in step 9 and the U-phase voltage on the power supply side detected by the power supply side non-contact voltage sensor 17 is within an allowable range. Output to the display unit 25.
【００１９】図３は、本発明の第３の実施の形態の構成
を示すブロックである。この実施の形態は図２の実施の
形態と構成は基本的に同じであるが、この実施の形態で
は同期判定手段１２が制御装置５´とは別に同期判定手
段１２を設けている。そしてこの例では、同期判定手段
１２と無線通信装置１１とを１つのユニット１０として
構成している。このようにすると既製品の移動電源車に
対してこのユニット１０を設けことにより、簡単に本発
明を実施することができる利点がある。FIG. 3 is a block diagram showing the configuration of the third embodiment of the present invention. Although the configuration of this embodiment is basically the same as that of the embodiment of FIG. 2, in this embodiment, the synchronization determination means 12 is provided with a synchronization determination means 12 separately from the control device 5 '. In this example, the synchronization determination unit 12 and the wireless communication device 11 are configured as one unit 10. In this case, there is an advantage that the present invention can be easily implemented by providing the unit 10 for an off-the-shelf mobile power supply vehicle.
【００２０】上記３つの実施の形態では、区分開閉器１
３よりも電源側に配電線の電流を測定する手段(１６Ｖ
及び１６Ｗ）を設けたが、配電線の電流を測定する手段
は、区分開閉器１３の負荷側に設けてもよく、また区分
開閉器の電源側と負荷側とにそれぞれ分けて設けるよう
にしてもよい。その場合には、上記実施の形態と異なっ
て電流を測定するために専用の非接触電流センサを用い
ればよい。In the above three embodiments, the segmented switch 1
Means for measuring the current of the distribution line (16 V
And 16W), the means for measuring the current of the distribution line may be provided on the load side of the segmented switch 13, or separately provided on the power side and the load side of the segmented switch. Is also good. In that case, a dedicated non-contact current sensor may be used to measure the current, different from the above embodiment.
【００２１】[0021]
【発明の効果】本発明によれば、無線式同期検相器が少
なくとも電源側と負荷側の配電線の険相を行い、その結
果を無線で移動用電源車に送信するため、険相確認に時
間遅れが生じることがなく、検相精度を従来よりも高め
ることができる。According to the present invention, since the wireless synchronous phase detector performs at least the power line and the load side of the distribution line and transmits the result wirelessly to the mobile power supply vehicle, There is no time delay, and the phase detection accuracy can be increased as compared with the conventional case.
【００２２】また、負荷側非接触電圧センサを１つにす
ると、センサの装着作業が簡単になる利点がある。Further, when one load-side non-contact voltage sensor is used, there is an advantage that mounting work of the sensor is simplified.
【００２３】また本発明によれば、電源側及び負荷側の
位相、電圧及び周波数等の情報を、制御ケーブルを敷設
することなく、移動電源車の発電機の出力を調整する制
御装置に提供できるため、工事の作業工数を少なくでき
て、しかも発電機の出力の周波数調整作業が容易になる
利点がある。Further, according to the present invention, information such as phase, voltage and frequency on the power supply side and the load side can be provided to the control device for adjusting the output of the generator of the mobile power supply vehicle without laying a control cable. Therefore, there is an advantage that the number of work steps for the construction can be reduced and the frequency adjustment work of the output of the generator is easily performed.
【００２４】また同期判定手段と無線通信装置とを１つ
のユニットとして構成すると、既製品の移動電源車に対
してこのユニットを設けことにより、簡単に本発明を実
施することができる利点がある。If the synchronization determination means and the wireless communication device are configured as one unit, there is an advantage that the present invention can be easily implemented by providing this unit for a ready-made mobile power supply vehicle.
【図１】本発明の移動用電源装置の一実施の形態の構成
を概略的に示すブロック図である。FIG. 1 is a block diagram schematically showing a configuration of an embodiment of a mobile power supply device of the present invention.
【図２】本発明の移動用電源装置の他の実施の形態の構
成を概略的に示すブロック図であるFIG. 2 is a block diagram schematically showing the configuration of another embodiment of the mobile power supply device of the present invention.
【図３】本発明の移動用電源装置の更に他の実施の形態
の構成を概略的に示すブロック図であるFIG. 3 is a block diagram schematically showing a configuration of still another embodiment of the mobile power supply device of the present invention.
１ 移動電源車 ３ 発電機 ５，５´ 制御装置 ７ 遮断器 ９ 指令発生手段 １０ ユニット １１ 無線通信装置 １２ 同期判定手段 １３ 区分開閉器 １５，１５´ 無線式同期検相器 １６Ｖ，１６Ｗ 非接触電圧・電流センサ １７，１９Ｕ，１９Ｖ，１９Ｗ，１９ 非接触電圧セン
サ ２１，２１´ 同期検相部 ２３ 無線通信装置 ２５ 表示部DESCRIPTION OF SYMBOLS 1 Mobile power supply vehicle 3 Generator 5, 5 'control device 7 Circuit breaker 9 Command generation means 10 Unit 11 Wireless communication device 12 Synchronization determination means 13 Division switch 15, 15' Wireless synchronous phase detector 16V, 16W Non-contact voltage -Current sensor 17, 19U, 19V, 19W, 19 Non-contact voltage sensor 21, 21 'Synchronous phase detector 23 Wireless communication device 25 Display
───────────────────────────────────────────────────── フロントページの続き (72)発明者 福島 敦 福岡県宗像郡福間町花見が浜二丁目１番１ 号 九州変圧器株式会社内 (72)発明者 麻上 克久 福岡県宗像郡福間町花見が浜二丁目１番１ 号 九州変圧器株式会社内 (72)発明者 宮木 啓二 福岡県宗像郡福間町花見が浜二丁目１番１ 号 九州変圧器株式会社内 Ｆターム(参考） 5G015 GA15 JA05 JA34 5G066 AA10 AB01 AC02 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Atsushi Fukushima 2-1-1 Hanamihama, Fukuma-machi, Munakata-gun, Fukuoka Inside Kyushu Transformer Co., Ltd. (72) Katsuhisa Asami Hanami, Fukuma-cho, Munakata-gun, Fukuoka 2-1-1 Gahama Kyushu Transformer Co., Ltd. (72) Inventor Keiji Miyaki 2-1-1 Kanamihama, Fukuma-cho, Munakata-gun, Fukuoka F-term in Kyushu Transformer Co., Ltd. 5G015 GA15 JA05 JA34 5G066 AA10 AB01 AC02
Claims (5)
電機の出力により区分開閉器を有する配電線の負荷側を
無停電で救済するための移動用電源装置であって、 前記配電線の前記区分開閉器よりも電源側に設けられた
電源側非接触電圧センサと、 前記配電線に設けられた非接触電流センサと、 前記配電線の前記区分開閉器よりも負荷側に設けられた
負荷側非接触電圧センサと、 前記区分開閉器の近くに配置され、前記電源側非接触電
圧センサの出力と前記負荷側非接触電圧センサの出力と
に基づいて少なくとも前記電源側と前記負荷側の電圧の
検相を行って、その結果を無線で移動用電源車に送信
し、且つ前記非接触電流センサの出力及び前記電源側非
接触電圧センサの出力を無線で移動用電源車に送信する
無線式同期検相器とを具備し、 前記移動用電源車は、前記無線式同期検相器との間で無
線で交信する無線通信装置と、前記無線式同期検相器の
出力に基づいて前記発電機の出力調整を行う制御装置と
を具備することを特徴とする移動電源装置。1. A moving power supply device for relieving the load side of a distribution line having a segmented switch with an uninterruptible power supply by an output of the generator of a moving power supply vehicle equipped with a generator, A power supply-side non-contact voltage sensor provided on the power supply side of the distribution switch; a non-contact current sensor provided on the distribution line; and a non-contact current sensor provided on the load side of the distribution line on the load side. A load-side non-contact voltage sensor, which is disposed near the segmented switch, and at least the power-supply side and the load-side based on an output of the power-supply-side non-contact voltage sensor and an output of the load-side non-contact voltage sensor. A radio which performs voltage phase detection, wirelessly transmits the result to the mobile power supply vehicle, and wirelessly transmits the output of the non-contact current sensor and the output of the power supply side non-contact voltage sensor to the mobile power supply vehicle. Type synchronous phase detector The mobile power supply vehicle, a wireless communication device that wirelessly communicates with the wireless synchronous phase detector, and a control device that adjusts the output of the generator based on the output of the wireless synchronous phase detector A mobile power supply device comprising:
電機の出力により区分開閉器を有する三相配電線の負荷
側を無停電で救済するための移動用電源装置であって、 前記三相配電線の前記区分開閉器よりも電源側に設けら
れた３つの電源側非接触電圧センサと、 前記三相配電線の少なくとも二相の配電線にそれぞれ設
けられた２以上の非接触電流センサと、 前記三相配電線の前記区分開閉器よりも負荷側の一相の
配電線に設けられた１つの負荷側非接触電圧センサと、 前記区分開閉器の近くに配置され、前記負荷側非接触電
圧センサの出力と前記負荷側非接触電圧センサが装着さ
れた相に対応する１つの前記電源側非接触電圧センサの
出力とに基づいて前記電源側と前記負荷側の電圧の同期
確認を行って表示部に表示し、予め記憶した前記発電機
の出力の相回転と前記３つの電源側非接触電圧センサの
出力とに基づいて少なくとも前記電源側と前記負荷側の
電圧の検相を行い、少なくとも検相結果、前記非接触電
流センサの出力及び前記電源側非接触電圧センサの出力
を無線で移動用電源車に送信する無線式同期検相器とを
具備し、 前記移動用電源車は、前記無線式同期検相器との間で無
線で交信する無線通信装置と、前記無線式同期検相器の
出力に基づいて同期確認を行って前記発電機の出力周波
数調整を行う制御装置とを具備することを特徴とする移
動電源装置。2. A mobile power supply device for relieving the load side of a three-phase distribution line having a segmented switch without interruption by an output of the power generator of a mobile power vehicle equipped with a generator, Three power-supply-side non-contact voltage sensors provided on the power supply side of the three-phase distribution line on the power supply side, and two or more non-contact current sensors provided on at least two-phase distribution lines of the three-phase distribution line, One load-side non-contact voltage sensor provided on a one-phase distribution line on the load side of the three-phase distribution line on the load side of the segmented switch; and the load-side non-contact voltage sensor arranged near the segmented switch. And performing a synchronization check of the voltages on the power supply side and the load side based on the output of the power supply side non-contact voltage sensor and the output of one power supply side non-contact voltage sensor corresponding to the phase in which the load side non-contact voltage sensor is mounted, and Displayed before and stored in advance Based on the phase rotation of the output of the generator and the output of the three non-contact voltage sensors on the power supply side, at least phase detection of the voltage on the power supply side and the load side is performed. A wireless synchronous phase detector for wirelessly transmitting an output and an output of the power supply side non-contact voltage sensor to a mobile power supply vehicle, wherein the mobile power supply vehicle is connected to the wireless synchronous phase detector. A mobile power supply device comprising: a wireless communication device that communicates wirelessly; and a control device that performs synchronization confirmation based on an output of the wireless synchronous phase detector and adjusts an output frequency of the generator.
から送信された前記電源側非接触電圧センサの出力と前
記発電機の出力とに基づいて、同期判定を行う同期判定
手段を内蔵しており、 前記制御装置は、前記同期判定手段の出力に基づいて前
記発電機の出力の周波数調整を行い、周波数調整が完了
すると、前記無線通信装置を介して前記無線式同期検相
器に前記区分開閉器を開閉するための開閉指令を自動ま
たは手動で出力できるように構成されており、 前記無線式同期検相器は前記開閉指令が入力されると前
記区分開閉器を開状態または閉状態にする時期が到来し
たことを前記表示部に表示するように構成されている請
求項１または２に記載の移動電源装置。3. The control device has a built-in synchronization determination unit that performs synchronization determination based on the output of the power-side non-contact voltage sensor transmitted from the wireless synchronous phase detector and the output of the generator. The control device performs frequency adjustment of the output of the generator based on the output of the synchronization determination unit, and when the frequency adjustment is completed, the wireless synchronization phase detector via the wireless communication device. An open / close command for opening / closing the sectional switch is configured to be automatically or manually output, and the wireless synchronous phase detector opens or closes the sectional switch when the open / close command is input. The mobile power supply device according to claim 1, wherein the display unit is configured to display the arrival of the time for setting the state.
器から送信された前記電源側非接触電圧センサの出力と
前記発電機の出力とに基づいて、同期判定を行う同期判
定手段を備えており、 前記同期判定手段は前記無線通信装置と組み合わされて
１つのユニットとして構成され、 前記制御装置は、前記同期判定手段の出力に基づいて前
記発電機の出力の周波数調整を行い、周波数調整が完了
すると、前記無線通信装置を介して前記無線式同期検相
器に前記区分開閉器を開閉するための開閉指令を自動ま
たは手動で出力できるように構成されており、 前記無線式同期検相器は前記開閉指令が入力されると前
記区分開閉器を開状態または閉状態にする時期が到来し
たことを前記表示部に表示するように構成されている請
求項１または２に記載の移動電源装置。4. The mobile power-supply vehicle includes a synchronization determination unit that performs synchronization determination based on an output of the power-side non-contact voltage sensor transmitted from the wireless synchronous phase detector and an output of the generator. Wherein the synchronization determination means is configured as a single unit in combination with the wireless communication device, and the control device adjusts the frequency of the output of the generator based on the output of the synchronization determination means, When the adjustment is completed, an open / close command for opening / closing the segmented switch is automatically or manually output to the wireless synchronous phase detector via the wireless communication device, and the wireless synchronous detector 3. The shifter according to claim 1, wherein the phaser is configured to, when the switching command is input, display on the display unit that a time has come to open or close the sectional switch. Dynamic power supply.
接触電圧センサの出力と前記負荷側非接触電圧センサが
装着された相に対応する１つの前記電源側非接触電圧セ
ンサの出力とに基づいて前記電源側と前記負荷側の電圧
の同期確認を行う同期判定手段と、 前記発電機の出力の相回転を記憶する相回転記憶手段
と、 前記相回転記憶手段に記憶された前記相回転と前記３つ
の電源側非接触電圧センサの出力とに基づいて前記電源
側と前記負荷側の電圧の検相を行う相回転判定手段とを
備え、 前記同期判定手段の判定結果を前記表示部に表示させる
ように構成されている請求項３に記載の移動電源装置。5. The wireless synchronous phase detector includes an output of the load-side non-contact voltage sensor and an output of one of the power-supply-side non-contact voltage sensors corresponding to a phase in which the load-side non-contact voltage sensor is mounted. A synchronization determination unit that performs synchronization confirmation of the voltage on the power supply side and the load side based on the above, a phase rotation storage unit that stores a phase rotation of an output of the generator, and the phase rotation storage unit that is stored in the phase rotation storage unit. Phase rotation determination means for performing phase detection of the power supply side and the load side voltage based on the phase rotation and the outputs of the three power supply side non-contact voltage sensors, and the determination result of the synchronization determination means is displayed. The mobile power supply device according to claim 3, wherein the mobile power supply device is configured to be displayed on a unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30521199A JP4159207B2 (en) | 1999-10-27 | 1999-10-27 | Mobile power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30521199A JP4159207B2 (en) | 1999-10-27 | 1999-10-27 | Mobile power supply |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2001128363A true JP2001128363A (en) | 2001-05-11 |
| JP4159207B2 JP4159207B2 (en) | 2008-10-01 |
Family
ID=17942397
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP30521199A Expired - Lifetime JP4159207B2 (en) | 1999-10-27 | 1999-10-27 | Mobile power supply |
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| Country | Link |
|---|---|
| JP (1) | JP4159207B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007043261A (en) * | 2005-08-01 | 2007-02-15 | Meidensha Corp | Radio repeater |
| JP2007104832A (en) * | 2005-10-06 | 2007-04-19 | Meidensha Corp | Non-contact sensor for movable generator |
| CN111864559A (en) * | 2020-06-30 | 2020-10-30 | 国网辽宁省电力有限公司营口供电公司 | 400-volt bypass switch, nuclear phase current and voltage monitoring device and using method |
| CN114597937A (en) * | 2022-03-01 | 2022-06-07 | 广东电网有限责任公司广州供电局 | External mobile synchronous power-off grid-connected platform based on low-voltage power supply and method thereof |
-
1999
- 1999-10-27 JP JP30521199A patent/JP4159207B2/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007043261A (en) * | 2005-08-01 | 2007-02-15 | Meidensha Corp | Radio repeater |
| JP2007104832A (en) * | 2005-10-06 | 2007-04-19 | Meidensha Corp | Non-contact sensor for movable generator |
| CN111864559A (en) * | 2020-06-30 | 2020-10-30 | 国网辽宁省电力有限公司营口供电公司 | 400-volt bypass switch, nuclear phase current and voltage monitoring device and using method |
| CN111864559B (en) * | 2020-06-30 | 2023-11-07 | 国网辽宁省电力有限公司营口供电公司 | 400-volt bypass switch and nuclear phase current and voltage monitoring device and application method |
| CN114597937A (en) * | 2022-03-01 | 2022-06-07 | 广东电网有限责任公司广州供电局 | External mobile synchronous power-off grid-connected platform based on low-voltage power supply and method thereof |
| CN114597937B (en) * | 2022-03-01 | 2024-04-30 | 广东电网有限责任公司广州供电局 | External mobile synchronous uninterrupted grid-connected platform based on low-voltage power supply vehicle and method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4159207B2 (en) | 2008-10-01 |
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