JPH07264772A - Separation for broken line section in high-voltage distribution line - Google Patents
Separation for broken line section in high-voltage distribution lineInfo
- Publication number
- JPH07264772A JPH07264772A JP4726894A JP4726894A JPH07264772A JP H07264772 A JPH07264772 A JP H07264772A JP 4726894 A JP4726894 A JP 4726894A JP 4726894 A JP4726894 A JP 4726894A JP H07264772 A JPH07264772 A JP H07264772A
- Authority
- JP
- Japan
- Prior art keywords
- disconnection
- voltage
- section
- switch
- distribution line
- 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.)
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Links
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Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は高圧配電線の断線区間の
切り離し方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of disconnecting a broken section of a high voltage distribution line.
【０００２】[0002]
【従来の技術】従来、配電系統の途中に複数の開閉器を
設けた高圧配電線路において断線事故が発生した場合に
は、発見者からの通報がなければ断線事故が発生したこ
とを知ることができなかった。また断線事故が発生して
地絡事故に至った場合でも、再閉路成功により断線した
配電線が充電されたまま放置されることになり、人身事
故が発生する危険性があった。そこで断線区間を検出し
て、断線区間を配電系統から切り離す技術が開発される
ようになってきた。例えば、特開平５−３８０４４号公
報に示された停電箇所の自動検出方法では、配電用変圧
器の電圧や電流の状態を常時監視するために、配電用変
圧器に対してそれぞれ設けられる変圧器計測端末（ＴＭ
Ｕ）を断線検出用センサとして利用している。この方法
では、営業所に設置した親局からの指令に応じて変圧器
計測端末が計測結果を親局に送信する機能を有している
ことに着目し、配電線路に分散配置した各変圧器計測端
末に定期的に呼び出し指令を一斉に出す。そして各変圧
器計測端末から送信されてくる計測結果に基づいて、親
局側に設けた電算機を用いて速やかに断線区間を検出す
る。その後、検出した断線区間を挟む位置にある開閉器
に設けた子局に親局から切離し指令または開指令を出し
て開閉器を開くようにしている。この従来の方法では、
特開平４−４９８１３号公報に示された開閉器の切離し
制御方法を併用することにより、断線区間を１０秒以内
に配電系統から切り離すことを可能にしている。2. Description of the Related Art Conventionally, when a disconnection accident occurs in a high-voltage distribution line provided with a plurality of switches in the middle of a distribution system, it is possible to know that the disconnection accident has occurred unless the finder discovers it. could not. In addition, even if a disconnection accident occurs and a ground fault occurs, a broken redistribution line will be left charged and a personal injury risk will occur due to the successful reclosing. Therefore, a technique has been developed to detect the disconnection section and disconnect the disconnection section from the distribution system. For example, in the automatic detection method of a power failure point disclosed in Japanese Patent Laid-Open No. 5-38044, a transformer provided for each distribution transformer in order to constantly monitor the voltage and current states of the distribution transformer. Measuring terminal (TM
U) is used as a sensor for detecting disconnection. In this method, focusing on the fact that the transformer measurement terminal has the function of transmitting the measurement results to the parent station in response to the command from the parent station installed in the sales office, each transformer distributed in the distribution line is distributed. Send a call command to the measuring terminals periodically. Then, based on the measurement result transmitted from each transformer measurement terminal, the disconnection section is promptly detected using the computer provided on the master station side. After that, a disconnection command or an opening command is issued from the master station to the slave station provided in the switch located at the position sandwiching the detected disconnection section to open the switch. In this traditional method,
By using the switch disconnection control method disclosed in JP-A-4-49813 in combination, it is possible to disconnect the disconnection section from the power distribution system within 10 seconds.
【０００３】[0003]
【発明が解決しようとする課題】変圧器計測端末は配電
用変圧器（通常は柱上変圧器）が装着される変圧器装着
用電柱に装着されており、開閉器は２本の変圧器装着用
電柱の間の別の電柱（開閉器装着用電柱）に装着されて
いる。通常、変圧器装着用電柱と開閉器装着用電柱との
間の距離は、２００ｍ〜１０００ｍ離れている。図４に
示すように、変圧器計測端末ＴＭＵ１〜ＴＭＵ７の出力
を利用して断線区間を検出する場合には、変圧器装着用
電柱間における断線の発生は検出できるものの、変圧器
装着用電柱と開閉器装着用電柱との間（Ａ点またはＢ
点）で断線が発生した場合に、Ａ点側またはＢ点側のい
ずれで断線が発生したのかを検出することができない。
そのため、従来の方法では、開閉器１〜開閉器３を開い
て二つの区間を配電系統から切り離すことになり、断線
が発生していない区間まで停電させてしまう問題があ
る。The transformer measuring terminal is mounted on a transformer-mounted power pole on which a distribution transformer (usually a pole transformer) is mounted, and a switch is mounted on two transformers. It is installed on another utility pole (switch-installing utility pole) between utility poles. Normally, the distance between the transformer mounting power pole and the switch mounting power pole is 200 m to 1000 m. As shown in FIG. 4, when the disconnection section is detected by using the outputs of the transformer measurement terminals TMU1 to TMU7, the occurrence of the disconnection between the transformer mounting poles can be detected, but Between switch-mounted electric pole (point A or B
When the disconnection occurs at (point), it is not possible to detect whether the disconnection occurs at the A point side or the B point side.
Therefore, in the conventional method, the switches 1 to 3 are opened to disconnect the two sections from the power distribution system, and there is a problem of causing a power failure to a section where no disconnection occurs.
【０００４】本発明の目的は、断線が発生している区間
だけを配電系統から切り離すことができる高圧配電線の
断線区間切り離し方法に関するものである。An object of the present invention is to provide a disconnection section disconnection method for a high-voltage distribution line, which can disconnect only a section in which a disconnection has occurred from a power distribution system.
【０００５】[0005]
【課題を解決するための手段】請求項１の発明は、配電
用変圧器が設置された変圧器設置部が所定の距離をあけ
て配置され、変圧器設置部間に開閉器が設置された開閉
器設置部が配置されてなる高電圧配線路において断線が
発生した断線区間を検出し、検出結果に基づいて所定の
開閉器を開いて前記断線区間を高電圧配線路から切り離
す高圧配電線の断線区間切り離し方法を対象とする。本
発明では、開閉器の電源側配電線と大地との間の対地電
圧を測定する電源側電圧センサ及び開閉器の負荷側配電
線と大地との間の対地電圧を測定する負荷側電圧センサ
とを前記開閉器設置部に設ける。そして電源側電圧セン
サ及び負荷側電圧センサの出力から電源側配電線及び負
荷側配電線のいずれ側で断線が発生したかを断線検出装
置により判定して断線区間を検出し、検出した断線区間
の両側に位置する開閉器を開く。According to a first aspect of the present invention, a transformer installation section in which a distribution transformer is installed is arranged with a predetermined distance, and a switch is installed between the transformer installation sections. A high-voltage distribution line that detects a disconnection section in which a disconnection has occurred in the high-voltage wiring path in which the switch installation section is placed and opens the predetermined switch based on the detection result to disconnect the disconnection section from the high-voltage wiring path. The method for disconnecting the broken section is the target. In the present invention, a power supply side voltage sensor for measuring the ground voltage between the power supply side distribution line of the switch and the ground, and a load side voltage sensor for measuring the ground voltage between the load side distribution line of the switch and the ground. Is provided in the switch installation section. Then, from the output of the voltage sensor on the power source side and the voltage sensor on the load side, the disconnection detection device determines which side of the distribution line on the power source side or the distribution line on the load side has a disconnection, detects the disconnection section, and detects the disconnection section. Open the switches located on both sides.
【０００６】[0006]
【作用】本発明のように、電源側電圧センサ及び負荷側
電圧センサを設けて、断線検出装置により開閉器の電源
側配電線または負荷側配電線のいずれで断線が発生した
かを検出できれば、断線が発生した区間を決定できる。
即ち電源側電圧センサ及び負荷側電圧センサの両方が断
線状態の発生を検出した場合には、開閉器の電源側で断
線が発生している。実際に断線が発生している区間は、
少なくとも電源側で断線が発生していないことを検出し
ている電源電圧センサが設けられた開閉器と該開閉器の
負荷側に位置して電源側と負荷側の両方で断線状態が発
生していることを検出している電圧センサが設けられた
開閉器との間である。この区間は、各断線検出装置の出
力を見ることによって簡単に検出することができる。そ
してこの区間を検出した後、この区間の両側に位置する
２つの開閉器を開けば、実際に断線が発生している区間
だけを切り離すことができる。According to the present invention, if the power supply side voltage sensor and the load side voltage sensor are provided and the disconnection detection device can detect whether the disconnection occurs in the power supply side distribution line or the load side distribution line of the switch, The section where the disconnection occurred can be determined.
That is, when both the power supply side voltage sensor and the load side voltage sensor detect the occurrence of the disconnection state, the disconnection occurs on the power supply side of the switch. The section where the disconnection is actually occurring is
At least a switch equipped with a power supply voltage sensor that detects that no disconnection has occurred on the power supply side and the switch is located on the load side, and disconnection occurs on both the power supply side and the load side. The switch is provided with a voltage sensor that detects that This section can be easily detected by looking at the output of each disconnection detection device. Then, after detecting this section, if the two switches located on both sides of this section are opened, only the section in which the disconnection actually occurs can be separated.
【０００７】[0007]
【実施例】以下図面を参照して、本発明の実施例を詳細
に説明する。図１は、本発明の方法を実施するための高
圧配電線の系統図を概略的に単相で示している。高圧配
電線は実際には三相である。図１において、ＴＲ１〜Ｔ
Ｒ７は、電柱に装着された配電用変圧器であり、ＴＭＵ
１〜ＴＭＵ７は、変圧器ＴＲ１〜ＴＲ７と一緒に同じ電
柱に装着された変圧器計測端末である。本実施例では、
開閉器１〜４に対して、電源側配電線と大地との間の対
地電圧を測定する電源側電圧センサＶＤ１〜ＶＤ４と負
荷側配電線と大地との間の対地電圧を測定する負荷側電
圧センサＶＤ５〜ＶＤ８とを設けている。電源側電圧セ
ンサＶＤ１〜ＶＤ４と負荷側電圧センサＶＤ５〜ＶＤ８
の出力は、断線検出装置ＤＤＵ１〜ＤＤＵ４に入力され
ている。Embodiments of the present invention will now be described in detail with reference to the drawings. FIG. 1 shows schematically a single-phase schematic diagram of a high-voltage distribution line for carrying out the method according to the invention. High voltage distribution lines are actually three-phase. In FIG. 1, TR1 to T
R7 is a distribution transformer mounted on a utility pole,
1 to TMU7 are transformer measuring terminals mounted on the same electric pole together with the transformers TR1 to TR7. In this embodiment,
For switches 1 to 4, power supply side voltage sensors VD1 to VD4 that measure the ground voltage between the power supply side distribution line and the ground, and load side voltage that measures the ground voltage between the load side distribution line and the ground. Sensors VD5 to VD8 are provided. Power supply side voltage sensors VD1 to VD4 and load side voltage sensors VD5 to VD8
The output of is input to the disconnection detection devices DDU1 to DDU4.
【０００８】図２には、一例として、開閉器１、変圧器
計測端末ＴＭＵ１及びＴＭＵ２、電圧センサＶＤ１及び
ＶＤ５及び断線検出装置ＤＤＵ１の関係と各部のより詳
細な構成を示してある。開閉器１は三相高圧配電線Ｕ，
Ｖ，Ｗに接続された開閉接点を有しており、図示しない
制御装置によって開閉制御される。開閉器１が設置され
る開閉器設置部としての開閉器設置用電柱には、営業所
などに配置された親局と光ケーブルを介して接続された
子局（中継器）が一緒に設置されている。開閉器１の制
御装置は、この子局からの指令によって開閉器１を制御
する。FIG. 2 shows, by way of example, the relationship between the switch 1, the transformer measuring terminals TMU1 and TMU2, the voltage sensors VD1 and VD5, and the disconnection detecting device DDU1 and a more detailed configuration of each part. The switch 1 is a three-phase high voltage distribution line U,
It has an open / close contact connected to V and W, and is opened / closed by a control device (not shown). On the switch installation pole as the switch installation section where the switch 1 is installed, the master station located at the sales office and the slave station (repeater) connected via the optical cable are installed together. There is. The controller of the switch 1 controls the switch 1 according to the command from this slave station.
【０００９】電源側電圧センサＶＤ１及び負荷側電圧セ
ンサＶＤ５を構成する電圧センサＶＤ１ｕ〜ＶＤ１ｗ及
びＶＤ５ｕ〜ＶＤ５ｗとしては、アレスタにより分圧回
路を構成した構造のものを用いることができる。この種
の電圧センサとしては、例えば実開平３−５２６７２号
公報に示されるような碍子兼用型の電圧センサを用いる
ことができる。As the voltage sensors VD1u to VD1w and VD5u to VD5w constituting the power supply side voltage sensor VD1 and the load side voltage sensor VD5, those having a structure in which a voltage dividing circuit is constituted by an arrester can be used. As this type of voltage sensor, for example, an insulator-type voltage sensor as disclosed in Japanese Utility Model Application Laid-Open No. 3-52672 can be used.
【００１０】電圧センサＶＤ１ｕ〜ＶＤ１ｗ及びＶＤ５
ｕ〜ＶＤ５ｗにより検出した三相高圧配電線Ｕ，Ｖ，Ｗ
と大地との間の対地電圧は、断線検出装置ＤＤＵ１の一
部を構成するアナログ−デジタル変換器１０１に入力さ
れて、デジタル信号に変換される。実際には、アナログ
−デジタル変換器１０１は１周期分の各対地電圧を所定
の周期でサンプリングして、そのつどアナログの対地電
圧を演算可能なデジタル信号に変換して出力している。
なおこのアナログ−デジタル変換器１０１が、対地電圧
を演算可能な信号に変換する信号変換手段を構成する。Voltage sensors VD1u to VD1w and VD5
u-VD5w three-phase high voltage distribution line U, V, W
The ground voltage between the ground and the ground is input to the analog-digital converter 101 forming a part of the disconnection detection device DDU1 and converted into a digital signal. In reality, the analog-digital converter 101 samples each ground voltage for one cycle at a predetermined cycle, converts the analog ground voltage into a digital signal that can be calculated, and outputs the digital signal.
The analog-digital converter 101 constitutes signal conversion means for converting the ground voltage into a signal that can be calculated.
【００１１】アナログ−デジタル変換器１０１によって
デジタル信号に変換された対地電圧は、演算手段１０２
に入力される。演算手段１０２は、対地電圧を線間電圧
に変換するために、アナログ−デジタル変換器１０１か
ら出力される２つの相（例えばＵ相とＶ相）の相電圧
（Ｕｉ，Ｖｉ）について差演算を行って差電圧（ＵＶｉ
＝Ｕｉ−Ｖｉ）を求め，この差電圧について積和演算を
行って、線間電圧の実効値［＝｛Σ（ＵＶｉ）2 ／サン
プリング数｝1/2 ］を求める。演算手段１０２は、電源
側及び負荷側のそれぞれの相についての線間電圧の実効
値を演算し、記憶手段１０３にその演算結果を記憶させ
る。具体的には、サンプリング毎の瞬時値を記憶手段１
０３に記憶させるとともに、瞬時値の累積加算値から求
めた平均値も併せて記憶手段１０３に記憶させている。
各断線検出装置ＤＤＵ１…に記憶された線間電圧は、親
局に送信され、親局は各断線検出装置ＤＤＵ１…から収
集したデータを電算機に入力する。The ground voltage converted into a digital signal by the analog-digital converter 101 is the calculation means 102.
Entered in. The calculation means 102 performs a difference calculation on the phase voltages (Ui, Vi) of the two phases (for example, U phase and V phase) output from the analog-digital converter 101 in order to convert the ground voltage to the line voltage. Go to the difference voltage (UVi
= Ui-Vi), and the sum of products operation is performed on this difference voltage to obtain the effective value [= {Σ (UVi) 2 / sampling number} 1/2 ] of the line voltage. The calculation means 102 calculates the effective value of the line voltage for each phase on the power supply side and the load side, and stores the calculation result in the storage means 103. Specifically, the instantaneous value for each sampling is stored in the storage unit 1.
The average value obtained from the cumulative addition value of the instantaneous values is also stored in the storage means 103.
The line voltage stored in each disconnection detection device DDU1 ... Is transmitted to the master station, and the master station inputs the data collected from each disconnection detection device DDU1.
【００１２】演算手段１０２で演算した線間電圧の瞬時
値は、断線を判定する判定手段１０４に入力される。判
定手段１０４では、線間電圧が予め定めた基準電圧以下
になった場合に、断線が発生したと判断して、その結果
を記憶手段１０３に記憶させる。ちなみに正常時におけ
る線間電圧が６ｋＶであったとすると、基準電圧は４．
８ｋＶ程度に設定すればよい。また本実施例では、判定
手段１０４で停電からの復電も判定する。そのため判定
手段１０４には、停電状態から線間電圧が第２の基準電
圧を越えたか否かを判定する手段が含まれている。第２
の基準電圧は、例えば５．４ｋＶ程度に設定する。判定
手段１０４が復電を検出すると、判定手段１０４は記憶
手段１０３に記憶させた断線の検出結果をリセットす
る。これによって瞬時停電の発生を断線と誤って検出し
た場合における誤動作の発生を防止する。The instantaneous value of the line voltage calculated by the calculating means 102 is input to the judging means 104 for judging the disconnection. When the line voltage becomes equal to or lower than a predetermined reference voltage, the determination unit 104 determines that the disconnection has occurred and stores the result in the storage unit 103. By the way, if the line voltage in a normal state is 6 kV, the reference voltage is 4.
It may be set to about 8 kV. Further, in this embodiment, the determination unit 104 also determines the power recovery from the power failure. Therefore, the determination means 104 includes means for determining whether or not the line voltage exceeds the second reference voltage in the power failure state. Second
The reference voltage of is set to about 5.4 kV, for example. When the determination unit 104 detects the power recovery, the determination unit 104 resets the detection result of the disconnection stored in the storage unit 103. This prevents a malfunction from occurring when the occurrence of an instantaneous power failure is erroneously detected as a disconnection.
【００１３】尚本実施例において、アナログ−デジタル
変換器１０１、演算手段１０２、記憶手段１０３及び判
定手段１０４は、市販のマイクロコンピュータのＣＰＵ
によって構成される。図３は、マイクロコンピュータを
用いて各手段を構成する場合に用いるソフトウエアーの
アルゴリズムを示している。尚ステップＳＴ１では、ア
ナログ信号からデジタル信号への変換も行われる。また
ステップＳＴ２では、線間電圧の記憶手段への記憶も行
われる。さらにステップＳＴ５では、状変要求の有無の
判断の前に復電の判定を行い、復電していない場合にだ
け状変要求の有無を判定する。復電している場合にはス
テップＳＴ１へと戻る。In the present embodiment, the analog-digital converter 101, the arithmetic means 102, the storage means 103 and the determination means 104 are the CPU of a commercially available microcomputer.
Composed by. FIG. 3 shows an algorithm of software used when each means is configured by using a microcomputer. In step ST1, conversion from analog signal to digital signal is also performed. In step ST2, the line voltage is also stored in the storage means. Further, in step ST5, power recovery is determined before determining whether there is a status change request, and whether there is a status change request is determined only when power recovery is not performed. When the power is restored, the process returns to step ST1.
【００１４】本実施例において、電源装置は、変圧器Ｔ
Ｒ１またはＴＲ２の二次出力によってＣＰＵの動作電圧
を発生する電源部１０５と電源部１０５の出力により浮
動充電されて停電時の電源バックアップをするバックア
ップ電源部１０６とから構成される。バックアップ電源
部１０６は、電源部１０５の出力が停止した後、数十分
間、計測と通信処理とを維持できる程度の容量を有する
二次電池を備えている。本実施例では、受信部１０７及
び送信部１０８を子局との間の送受信に用いている。な
お受信部１０７及び送信部１０８が、断線検出装置ＤＤ
Ｕ１の送受信手段を構成している。なお本実施例では、
各断線検出装置を１つのユニットとして構成している。In this embodiment, the power supply device is a transformer T
It is composed of a power supply unit 105 that generates an operating voltage of the CPU by the secondary output of R1 or TR2, and a backup power supply unit 106 that is floatingly charged by the output of the power supply unit 105 and backs up the power supply when a power failure occurs. The backup power supply unit 106 includes a secondary battery having a capacity that can maintain measurement and communication processing for several tens of minutes after the output of the power supply unit 105 is stopped. In this embodiment, the receiving unit 107 and the transmitting unit 108 are used for transmission / reception with the slave station. The receiving unit 107 and the transmitting unit 108 are connected to the disconnection detecting device DD.
It constitutes the transmitting / receiving means of U1. In this example,
Each disconnection detection device is configured as one unit.
【００１５】次に上記実施例における断線区間の検出動
作について説明する。尚以下の説明では、三相の配電線
を単相と考えて説明する。図１のＡ点で断線が発生した
場合には、電源側電圧センサＶＤ２が断線を検出し、電
源側電圧センサＶＤ２より負荷側に位置する他の電圧セ
ンサも断線状態を検出し、また電圧センサＶＤ２よりも
負荷側に位置する変圧器計測端末ＴＭＵ４〜ＴＭＵ７は
停電状態を検出する。このとき電圧センサＶＤ２よりも
電源側で開閉器２に一番近い変圧器計測端末ＴＭＵ３の
出力は正常を示しているため、この変圧器計測端末ＴＭ
Ｕ３が接続されている配電線部分と開閉器２との間（Ａ
点）で断線が発生したことが判る。また電圧センサＶＤ
６は停電状態を検出していないが、変圧器計測端末ＴＭ
Ｕ４が停電状態を検出している場合には、変圧器計測端
末ＴＭＵ４が接続されている配電線部分と電圧センサＶ
Ｄ６との間（Ｂ点）で断線が発生したことが判る。Next, the operation of detecting the disconnection section in the above embodiment will be described. In the following description, a three-phase distribution line will be considered as a single phase. When a disconnection occurs at point A in FIG. 1, the power supply side voltage sensor VD2 detects the disconnection, the other voltage sensors located on the load side of the power supply side voltage sensor VD2 also detect the disconnection state, and the voltage sensor The transformer measurement terminals TMU4 to TMU7 located on the load side of VD2 detect a power failure state. At this time, since the output of the transformer measurement terminal TMU3 closest to the switch 2 on the power supply side of the voltage sensor VD2 indicates normal, this transformer measurement terminal TM
Between the distribution line part to which U3 is connected and the switch 2 (A
It can be seen that the disconnection occurred at the point). In addition, the voltage sensor VD
6 does not detect the power failure state, but transformer measuring terminal TM
When U4 detects the power failure state, the distribution line portion to which the transformer measurement terminal TMU4 is connected and the voltage sensor V
It can be seen that a disconnection occurred between D6 (point B).
【００１６】電源側で開閉器２に一番近い変圧器計測端
末ＴＭＵ３の出力が停電状態を検出していて、その変圧
器計測端末ＴＭＵ３よりも電源側に位置する変圧器計測
端末ＴＭＵ２で正常を示していれば、変圧器計測端末Ｔ
ＭＵ２とその後の変圧器計測端末ＴＭＵ３との間（Ｃ
点）で断線が発生していることが判る。また電圧センサ
ＶＤ２は断線の発生を検出していないが、電圧センサＶ
Ｄ６が断線の発生を検出している場合には、電圧センサ
ＶＤ２と電圧センサＶＤ６との間で断線が発生している
ことが判る。なお電圧センサＶＤ２と電圧センサＶＤ６
との間で断線が発生していると言っても、この場合には
電圧センサＶＤ２または電圧センサＶＤ６を配電線に接
続する接続線で断線が発生している場合と、電圧センサ
ＶＤ２または電圧センサＶＤ６が接続された配電線部分
と開閉器２の端子部との間に断線が発生している場合と
が含まれる。Ｄ点で断線が発生した場合には、開閉器３
に対して設けた電圧センサＶＤ３が断線の発生を検出
し、その他はＣ点での断線の発生と同様に断線位置の判
定が行われる。On the power supply side, the output of the transformer measurement terminal TMU3 closest to the switch 2 detects a power failure state, and the transformer measurement terminal TMU2 located on the power supply side of the transformer measurement terminal TMU3 indicates normal operation. If indicated, transformer measuring terminal T
Between MU2 and the transformer measuring terminal TMU3 thereafter (C
It can be seen that the disconnection occurs at the point). Although the voltage sensor VD2 does not detect the occurrence of disconnection, the voltage sensor VD2
When D6 detects the occurrence of the disconnection, it is understood that the disconnection has occurred between the voltage sensor VD2 and the voltage sensor VD6. The voltage sensor VD2 and the voltage sensor VD6
Even if it is said that a disconnection has occurred between the voltage sensor VD2 or the voltage sensor VD2 and the voltage sensor VD2 or the voltage sensor VD2 or the voltage sensor. This includes a case where a disconnection occurs between the distribution line portion to which the VD 6 is connected and the terminal portion of the switch 2. If disconnection occurs at point D, switch 3
The voltage sensor VD3 provided for the sensor detects the occurrence of the disconnection, and otherwise the determination of the disconnection position is performed in the same manner as the occurrence of the disconnection at the point C.
【００１７】親局を通して各断線検出装置と各変圧器計
測端末とから得たデータは断線箇所決定手段を構成する
電算機で処理され、電算機は所定の開閉器に親局を通し
て開指令を出力する。前述のＡ点及びＣ点で断線が発生
した場合には、開閉器１及び２に開指令が出力され、開
閉器１及び２の間の区間が配電系統から切り離される。
その後、常開接点を有する開閉器４の接点を閉じて、開
閉器２以降の配電線路に別の配電系統から電力を供給す
る。Ｂ点及びＤ点で断線が発生した場合には、開閉器２
及び３に開指令が出力される。The data obtained from each disconnection detecting device and each transformer measuring terminal through the master station is processed by the computer constituting the disconnection point determining means, and the computer outputs an open command to the predetermined switch through the master station. To do. When disconnection occurs at points A and C described above, an open command is output to the switches 1 and 2, and the section between the switches 1 and 2 is disconnected from the power distribution system.
After that, the contact of the switch 4 having the normally open contact is closed, and power is supplied to the power distribution line after the switch 2 from another power distribution system. If disconnection occurs at points B and D, switch 2
An open command is output to 3 and 3.
【００１８】本実施例では、前述のＡ点及びＢ点で断線
が発生した場合でも、断線位置を特定できるため、実際
に断線が発生している２つの開閉器の間の１区間だけを
配電系統から切り離しを行えばよい。In this embodiment, even if the disconnection occurs at the points A and B, the disconnection position can be specified. Therefore, only one section between the two switches in which the disconnection actually occurs is distributed. It can be separated from the system.
【００１９】１区間だけを配電系統から切り離す目的の
ためだけであれば、変圧器計測端末の出力を利用して、
断線位置を特定する必要はない。図１のＡ点またはＣ点
のいずれで断線が発生した場合でも、電圧センサＶＤ５
が断線を検出しておらず且つ電圧センサＶＤ２が断線を
検出していることが、断線検出装置ＤＤＵ１及びＤＤＵ
２の出力から判るため、切り離す区間が開閉器１と開閉
器２との間であることが特定できる。Ｂ点またはＤ点で
断線が発生した場合には、同様にして開閉器２と開閉器
３との間の区間を切り離せばよいことが、断線検出装置
ＤＤＵ２及びＤＤＵ３の出力から特定できる。For the purpose of disconnecting only one section from the distribution system, the output of the transformer measuring terminal is used,
It is not necessary to specify the disconnection position. Even if the disconnection occurs at either point A or point C in FIG. 1, the voltage sensor VD5
Does not detect the disconnection and the voltage sensor VD2 detects the disconnection, the disconnection detection devices DDU1 and DDU.
Since it is known from the output of 2, it can be specified that the section to be separated is between the switch 1 and the switch 2. When the disconnection occurs at the point B or the point D, it is possible to specify that the section between the switch 2 and the switch 3 should be similarly separated from the outputs of the disconnection detection devices DDU2 and DDU3.
【００２０】[0020]
【発明の効果】本発明によれば、電源側電圧センサ及び
負荷側電圧センサを設けて、断線検出装置により開閉器
の電源側配電線または負荷側配電線のいずれで断線が発
生したかを検出することにより、断線が発生した区間を
決定できる。そのため本発明によれば、断線が発生して
いる区間だけを配電系統から切り離すことができる利点
がある。According to the present invention, a voltage sensor on the power supply side and a voltage sensor on the load side are provided, and the disconnection detection device detects whether the power supply side distribution line or the load side distribution line of the switch is broken. By doing so, the section where the disconnection occurs can be determined. Therefore, according to the present invention, there is an advantage that only the section where the disconnection occurs can be separated from the power distribution system.
【図１】本発明の方法を実施するための高圧配電線の系
統図である。FIG. 1 is a system diagram of a high-voltage distribution line for carrying out the method of the present invention.
【図２】開閉器、変圧器計測端末、電圧センサ及び断線
検出装置の関係と各部のより詳細な構成を示す図であ
る。FIG. 2 is a diagram showing a relationship between a switch, a transformer measurement terminal, a voltage sensor, and a disconnection detection device, and a more detailed configuration of each part.
【図３】断線検出装置をマイクロコンピュータを用いて
構成する場合に用いるソフトウエアーのアルゴリズムを
示すフローチャートである。FIG. 3 is a flowchart showing an algorithm of software used when the disconnection detection device is configured using a microcomputer.
【図４】従来の高圧配電線の断線箇所決定方法を説明す
るための図である。FIG. 4 is a diagram for explaining a conventional method for determining a disconnection point of a high-voltage distribution line.
ＴＲ１〜ＴＲ７ 配電用変圧器 ＴＭＵ１〜ＴＭＵ７ 変圧器計測端末 ＤＤＵ１〜ＤＤＵ４ 断線検出装置 ＶＤ１〜ＶＤ４ 電源側電圧センサ ＶＤ５〜ＶＤ８ 負荷側電圧センサ １〜４ 開閉器 １０１ アナログ−デジタル変換器 １０２ 演算手段 １０３ 記憶手段 １０４ 判定手段 １０５ 電源部 １０６ バックアップ電源部 １０７ 受信部 １０８ 送信部 TR1 to TR7 Distribution transformer TMU1 to TMU7 Transformer measurement terminal DDU1 to DDU4 Disconnection detection device VD1 to VD4 Power supply side voltage sensor VD5 to VD8 Load side voltage sensor 1 to 4 Switch 101 Analog-digital converter 102 Arithmetic means 103 Storage Means 104 Determining Means 105 Power Supply Unit 106 Backup Power Supply Unit 107 Reception Unit 108 Transmission Unit
───────────────────────────────────────────────────── フロントページの続き (72)発明者 大石 時雄 福岡県宗像郡福間町字汐井道2150番地の１ 九州変圧器株式会社内 (72)発明者 渡邊 義介 福岡県宗像郡福間町字汐井道2150番地の１ 九州変圧器株式会社内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Tokio Oishi 2150 Shioido, Fukuma-cho, Munakata-gun, Fukuoka Prefecture 1 Within Kyushu Transformer Co., Ltd. (72) Yoshisuke Watanabe 2150 Shioido, Fukuma-cho, Munakata-gun, Fukuoka Prefecture No. 1 inside Kyushu Transformer Co., Ltd.
Claims (1)
が所定の距離をあけて配置され、前記変圧器設置部間に
開閉器が設置された開閉器設置部が配置されてなる高電
圧配線路において断線が発生した断線区間を検出し、 検出結果に基づいて所定の前記開閉器を開いて前記断線
区間を前記高電圧配線路から切り離す高圧配電線の断線
区間切り離し方法であって、 前記開閉器の電源側配電線と大地との間の対地電圧を測
定する電源側電圧センサ及び前記開閉器の負荷側配電線
と大地との間の対地電圧を測定する負荷側電圧センサと
を前記開閉器設置部に設け、 前記電源側電圧センサ及び前記負荷側電圧センサの出力
から前記電源側配電線及び負荷側配電線のいずれ側で断
線が発生したかを断線検出装置により判定して断線区間
を検出し、 検出した前記断線区間の両側に位置する前記開閉器を開
くことを特徴とする高圧配電線の断線区間切り離し方
法。1. A height in which a transformer installation section in which a distribution transformer is installed is arranged with a predetermined distance, and a switch installation section in which a switch is installed is arranged between the transformer installation sections. A method for disconnecting a disconnection section of a high-voltage distribution line, which detects a disconnection section in which a disconnection has occurred in a voltage wiring path, opens a predetermined switch based on the detection result, and disconnects the disconnection section from the high-voltage wiring path, A power supply side voltage sensor for measuring a ground voltage between the power supply side distribution line of the switch and the ground, and a load side voltage sensor for measuring a ground voltage between the load side distribution line of the switch and the ground. A disconnection section is provided in the switch installation section, and a disconnection detection device determines which side of the power supply side distribution line and the load side distribution line has a disconnection from the output of the power supply side voltage sensor and the load side voltage sensor, and a disconnection section. Detect, detect How disconnect disconnection interval of the high-voltage distribution line, characterized in that opening said switch positioned on both sides of the disconnection period has.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP04726894A JP3457989B2 (en) | 1994-03-17 | 1994-03-17 | How to disconnect high-voltage distribution lines |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP04726894A JP3457989B2 (en) | 1994-03-17 | 1994-03-17 | How to disconnect high-voltage distribution lines |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07264772A true JPH07264772A (en) | 1995-10-13 |
| JP3457989B2 JP3457989B2 (en) | 2003-10-20 |
Family
ID=12770558
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP04726894A Expired - Lifetime JP3457989B2 (en) | 1994-03-17 | 1994-03-17 | How to disconnect high-voltage distribution lines |
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| Country | Link |
|---|---|
| JP (1) | JP3457989B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004053554A (en) * | 2002-07-24 | 2004-02-19 | Hitachi Ltd | Distribution line disconnection detection system |
| CN102331541A (en) * | 2010-05-27 | 2012-01-25 | 株式会社日立制作所 | Distribution system broken thread detector, system and method, meter copying device, relay, control device |
| JP2016053489A (en) * | 2014-09-03 | 2016-04-14 | 関西電力株式会社 | Disconnection detecting apparatus, disconnection detecting method, and disconnection section identifying system |
-
1994
- 1994-03-17 JP JP04726894A patent/JP3457989B2/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004053554A (en) * | 2002-07-24 | 2004-02-19 | Hitachi Ltd | Distribution line disconnection detection system |
| CN102331541A (en) * | 2010-05-27 | 2012-01-25 | 株式会社日立制作所 | Distribution system broken thread detector, system and method, meter copying device, relay, control device |
| JP2016053489A (en) * | 2014-09-03 | 2016-04-14 | 関西電力株式会社 | Disconnection detecting apparatus, disconnection detecting method, and disconnection section identifying system |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3457989B2 (en) | 2003-10-20 |
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