JP2009250847A - Accident-point standardizing device of gas insulation power apparatus - Google Patents

Accident-point standardizing device of gas insulation power apparatus Download PDF

Info

Publication number
JP2009250847A
JP2009250847A JP2008100843A JP2008100843A JP2009250847A JP 2009250847 A JP2009250847 A JP 2009250847A JP 2008100843 A JP2008100843 A JP 2008100843A JP 2008100843 A JP2008100843 A JP 2008100843A JP 2009250847 A JP2009250847 A JP 2009250847A
Authority
JP
Japan
Prior art keywords
accident
gas
occurrence
detectors
insulated 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
Application number
JP2008100843A
Other languages
Japanese (ja)
Inventor
Chieko Nishida
智恵子 西田
Mitsuhito Kamei
光仁 亀井
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP2008100843A priority Critical patent/JP2009250847A/en
Publication of JP2009250847A publication Critical patent/JP2009250847A/en
Pending legal-status Critical Current

Links

Images

Landscapes

  • Locating Faults (AREA)
  • Gas-Insulated Switchgears (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide an accident-point standardizing device of a gas insulation power apparatus that not only specifies a gas section which has been subjected to an accident and but also determines the detailed occurrence position in the gas section, the position of which it occurs, when an internal ground fault and short-circuit accident occur in a gas insulation power apparatus. <P>SOLUTION: Two detectors 6a and 6b are arranged at a suitable interval in one gas section. A signal processor 7 specifies the accident occurring position in the gas section, based on the speed of pressure wave generated by arc by accident occurrence, the time difference between the timings, when detectors 6a and 6b detect a phenomenon caused by the accident occurrence, and the arrangement interval of the detectors. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

この発明は、ガス絶縁電力機器の事故点標定装置に関するものである。   The present invention relates to an accident point locating device for gas insulated power equipment.

ガス絶縁電力機器は、接地電位にある外部導体である筒状の金属容器の内部に、中心導体である高電圧の課電導体が１相分または３相分収納され、金属容器と課電導体との間の空間に絶縁ガスが封入されている。そして、課電導体は、金属容器内を複数に仕切る絶縁スペーサによって支持される形で金属容器内に収納されているので、金属容器内には、絶縁スペーサで仕切られた複数のガス区画が画成されている。   Gas-insulated power equipment has a metal container and a charging conductor that are housed in a cylindrical metal container, which is an outer conductor at ground potential, for one or three phases of a high voltage charging conductor that is a central conductor. Insulating gas is sealed in the space between the two. In addition, since the power conducting conductor is housed in the metal container in a form supported by the insulating spacer that partitions the inside of the metal container, a plurality of gas compartments partitioned by the insulating spacer are defined in the metal container. It is made.

ところで、ガス絶縁電力機器では、運用時に絶縁ガスの絶縁性能が低下すると、局部的な絶縁破壊である部分放電（いわゆるアーク）が発生することがある。このアークが発生すると、１相分の課電導体を収納するガス絶縁電力機器では、課電導体の金属容器への地絡事故が発生することになる。また３相分の課電導体を収納するガス絶縁電力機器では、課電導体の金属容器への地絡事故の他に、異相の課電導体間での短絡事故も発生することになる。   By the way, in the gas insulated power equipment, when the insulation performance of the insulation gas is lowered during operation, a partial discharge (so-called arc) which is a local dielectric breakdown may occur. When this arc is generated, in a gas-insulated power device that houses one phase of the current-carrying conductor, a ground fault occurs on the metal container of the current-carrying conductor. In addition, in a gas-insulated power device that accommodates three-phase electrical conductors, a short-circuit accident occurs between different-phase electrical conductors in addition to a ground fault in the metallic container of the electrical conductors.

そこで、従来の事故点標定装置は、例えば特許文献１に提案されているように、上記したガス区画毎にガス圧力センサを設け、地絡・短絡時のアークによる圧力上昇の有無を検出し、当該ガス区画内での地絡・短絡の発生有無を判別することで、いずれのガス区画で事故が発生したかを特定できるように構成し、事故の復旧に役立てるようにしている。   Therefore, the conventional accident point locating device is provided with a gas pressure sensor for each gas section described above, for example, as proposed in Patent Document 1, and detects the presence or absence of a pressure increase due to an arc at the time of a ground fault or short circuit, By determining whether or not a ground fault or short-circuit has occurred in the gas compartment, it is possible to identify in which gas compartment the accident has occurred, so as to be useful for the recovery of the accident.

特開平７−２５５１１１号公報JP 7-255111 A

しかし、従来の事故点標定装置は、ガス区画を単位に地絡・短絡の発生有無を判定する構成であり、当該事故点がガス区画内のいずれの位置であるかの特定ができないという問題がある。   However, the conventional accident point locating device is configured to determine whether a ground fault or a short circuit has occurred in units of gas compartments, and there is a problem that it is impossible to specify which position in the gas compartment the accident point is. is there.

すなわち、この構成では、ガス区画が数メートル程度の長さであれば、事故の復旧に関する十分な情報を提供できるが、１０メートルを超えるようなガス区画を形成される長尺の金属容器である場合、ガス区画を特定しただけでは、そのガス区画内のいずれの位置で事故が発生したかを確認するための作業に時間が掛かり、事故復旧の迅速化が図れない。   That is, in this configuration, if the gas section is about several meters long, it can provide sufficient information regarding the recovery of the accident, but it is a long metal container in which a gas section exceeding 10 meters is formed. In this case, if only the gas compartment is specified, it takes time to confirm at which position in the gas compartment the accident has occurred, and the accident recovery cannot be speeded up.

この発明は、上記に鑑みてなされたものであり、ガス絶縁電力機器において内部地絡・短絡事故が発生した場合に、単に事故の発生したガス区画を特定するだけでなく、そのガス区画内のいずれの位置で発生したかの詳細な発生位置を判別することのできるガス絶縁電力機器の事故点標定装置を得ることを目的とする。   The present invention has been made in view of the above. When an internal ground fault / short-circuit accident occurs in a gas-insulated power device, the present invention not only identifies the gas section where the accident occurred, It is an object of the present invention to obtain an accident point locating device for a gas-insulated power apparatus that can determine a detailed occurrence position at which position.

上述した目的を達成するために、この発明にかかるガス絶縁電力機器の事故点標定装置は、ガス絶縁電力機器の金属容器内に画成される複数のガス区画のそれぞれに対して当該ガス区画の長手方向に所定の間隔を置いて配置され、対応する前記ガス区画内で発生した地絡事故或いは短絡事故に起因する現象を検出する２つの検出器と、事故発生によるアークによって発生する圧力波の速度と、前記２つの検出器のそれぞれが前記事故発生に起因する現象を検出したタイミングの時間差と、前記２つの検出器の前記配置間隔とに基づいて当該ガス区画内での事故発生位置を特定する信号処理部とを備えていることを特徴とする。   In order to achieve the above-described object, an accident point locating device for a gas insulated power device according to the present invention is provided for each of a plurality of gas compartments defined in a metal container of the gas insulated power device. Two detectors which are arranged at predetermined intervals in the longitudinal direction and detect a phenomenon caused by a ground fault accident or a short circuit accident occurring in the corresponding gas section, and a pressure wave generated by an arc caused by the accident occurrence The location of the accident in the gas compartment is identified based on the speed, the time difference between the timings at which each of the two detectors detects the phenomenon resulting from the occurrence of the accident, and the interval between the two detectors. And a signal processing unit.

この発明によれば、ガス絶縁電力機器において内部地絡・短絡事故が発生した場合に、単に事故の発生したガス区画を特定するだけでなく、そのガス区画内のいずれの位置で発生したかの詳細な発生位置を判別することができるという効果を奏する。   According to the present invention, when an internal ground fault / short-circuit accident occurs in a gas-insulated power device, not only the gas compartment where the accident has occurred is identified, but also at which position in the gas compartment There is an effect that a detailed generation position can be determined.

以下に図面を参照して、この発明にかかるガス絶縁電力機器の事故点標定装置の好適な実施の形態を詳細に説明する。   Exemplary embodiments of an accident point locating device for gas-insulated power equipment according to the present invention will be described below in detail with reference to the drawings.

実施の形態１．
図１は、この発明の実施の形態１によるガス絶縁電力機器の事故点標定装置の構成を示す概念図である。 Embodiment 1 FIG.
FIG. 1 is a conceptual diagram showing the configuration of an accident point locating device for a gas-insulated power apparatus according to Embodiment 1 of the present invention.

（ガス絶縁電力機器の構成）
図１において、筒状の金属容器１は、ガス絶縁電力機器のいわゆる筐体であって、接地電位にある外部導体として機能している。ガス絶縁電力機器では、この金属容器１内に絶縁ガスを封入し、その絶縁ガス雰囲気の中に、例えば、開閉部分や計器用変成器、変流器などの各種の電気機器が収納されている。図１では、その電気機器のうち、金属容器１内に配置される中心導体である高電圧の課電導体２が示されている。 (Configuration of gas-insulated power equipment)
In FIG. 1, a cylindrical metal container 1 is a so-called casing of a gas-insulated power device, and functions as an external conductor at a ground potential. In the gas-insulated power device, an insulating gas is sealed in the metal container 1, and various electric devices such as an open / close portion, a transformer for measuring instrument, and a current transformer are accommodated in the insulating gas atmosphere. . In FIG. 1, a high voltage applying conductor 2 that is a central conductor disposed in the metal container 1 is shown.

課電導体２は、金属容器１内を長手方向に適宜な間隔で仕切る絶縁スペーサ３ａ，３ｂに支持される形で金属容器１内に収納されているので、絶縁スペーサ３ａ，３ｂ間にガス区画が画成される構造である。金属容器１内には、このように絶縁スペーサで仕切られた複数のガス区画が画成されている。図１では、その複数のガス区画の１つが示されているということになる。また、課電導体２は、１相分設けられる場合と３相分の設けられる場合とがあるが、図１では、説明の便宜から１相分設けられる場合を示してある。   Since the electric conductor 2 is housed in the metal container 1 in a form supported by the insulating spacers 3a and 3b that partition the metal container 1 in the longitudinal direction at an appropriate interval, a gas partition is formed between the insulating spacers 3a and 3b. Is the structure that is defined. A plurality of gas compartments partitioned by the insulating spacers are defined in the metal container 1 as described above. In FIG. 1, one of the plurality of gas compartments is shown. In addition, the electric conductor 2 may be provided for one phase and may be provided for three phases, but FIG. 1 shows a case where one phase is provided for convenience of explanation.

（事故点標定装置の構成）
このようなガス絶縁電力機器の金属容器１内部で発生する地絡事故や短絡事故の発生位置を特定する事故点標定装置は、各ガス区画に対してそれぞれ配置される２つの検出器６ａ，６ｂと、それらの各出力を受ける信号処理装置７とで構成される。 (Configuration of accident location system)
An accident point locating device for specifying the location of occurrence of a ground fault or a short-circuit accident occurring inside the metal container 1 of such a gas-insulated power device has two detectors 6a and 6b arranged for each gas section. And a signal processing device 7 for receiving these outputs.

ここで、事故発生時のアークによって発生する現象には、（１）ガス圧力の上昇、（２）温度の上昇、（３）電磁波の放出、（４）固有な光の放出、（５）固有音響の放出、（６）固有振動の励起などがある。検出器６ａ，６ｂは、（１）〜（６）の中の１つを検出する構成である。   Here, the phenomenon caused by the arc at the time of the accident includes (1) increase in gas pressure, (2) increase in temperature, (3) emission of electromagnetic waves, (4) emission of intrinsic light, (5) intrinsic There are acoustic emission and (6) excitation of natural vibration. The detectors 6a and 6b are configured to detect one of (1) to (6).

検出器６ａ，６ｂは、１つのガス区画内での事故発生時の現象を２箇所で検出できるように、一般にはガス区画における金属容器１の外部に、対応するガス区画の長手方向に沿って所定の間隔を置いて設けられる。但し、検出する事象によっては、金属容器１の内部（絶縁スペーサ内）に設けられる場合もある。   The detectors 6a and 6b are generally arranged outside the metal container 1 in the gas compartment along the longitudinal direction of the corresponding gas compartment so that a phenomenon at the time of an accident in one gas compartment can be detected at two locations. Provided at a predetermined interval. However, depending on the event to be detected, it may be provided inside the metal container 1 (inside the insulating spacer).

信号処理装置７は、検出器６ａ，６ｂの出力に基づき、当該ガス区画で発生した事故がガス区画内のいずれの位置であるかの事故発生位置を特定できる例えば図２に示す構成を有している。   The signal processing device 7 has a configuration as shown in FIG. 2, for example, based on the outputs of the detectors 6a and 6b, which can specify the position where the accident that occurred in the gas section is in the gas section. ing.

図２は、図１に示す信号処理装置７の構成例を示すブロック図である。信号処理装置７は、例えば、図２に示すように、事故発生検出演算器１０と、波形検知器１１ａ，１１ｂと、時間差演算器１２と、判定器１３とで構成される。   FIG. 2 is a block diagram illustrating a configuration example of the signal processing device 7 illustrated in FIG. 1. As shown in FIG. 2, for example, the signal processing device 7 includes an accident occurrence detection calculator 10, waveform detectors 11 a and 11 b, a time difference calculator 12, and a determiner 13.

事故発生検出演算器１０は、検出器６ａ，６ｂのいずれか一方の出力（図２では、検出器６ａの出力としている）と判定閾値との大小関係に基づき、当該ガス区画での事故発生有無を判定し、事故発生を検出すると、検出したガス区画を判定部１３に通知する構成を有している。この事故発生ガス区画の判定方法は、従来行われている方法を用いることができる。   The accident occurrence detection computing unit 10 determines whether or not an accident has occurred in the gas section based on the magnitude relationship between the output of either one of the detectors 6a and 6b (in FIG. 2, the output of the detector 6a) and the determination threshold. When the occurrence of an accident is detected, the detected gas section is notified to the determination unit 13. As a method for determining the accident-occurring gas section, a conventional method can be used.

波形検知器１１ａは、検出器６ａの出力変化タイミングを検出し、また、波形検知器１１ｂは、検出器６ｂの出力変化タイミングを検出し、それぞれ、その検出した出力変化タイミングを時間差演算器１２に通知する構成を有している。   The waveform detector 11a detects the output change timing of the detector 6a, and the waveform detector 11b detects the output change timing of the detector 6b, and each of the detected output change timings is sent to the time difference calculator 12. It has a configuration to notify.

時間差演算器１２は、波形検知器１１ａ，１１ｂが検出した検出器６ａ，６ｂの出力変化タイミング間の時間差を算出し、求めた時間差を判定部１３に出力する構成を有している。   The time difference calculator 12 has a configuration that calculates a time difference between output change timings of the detectors 6 a and 6 b detected by the waveform detectors 11 a and 11 b and outputs the obtained time difference to the determination unit 13.

判定部１３は、事故発生によるアークによって発生する圧力波の伝搬速度をデフォルト値として有しており、その圧力波の伝搬速度と、時間差演算器１２から得た時間差と、検出器６ａ，６ｂの配置間隔とに基づき、事故発生検出演算器１０から通知されたガス区画内での事故発生点４を特定する構成を有している。   The determination unit 13 has, as a default value, the propagation speed of a pressure wave generated by an arc caused by an accident, the propagation speed of the pressure wave, the time difference obtained from the time difference calculator 12, and the detectors 6a and 6b. Based on the arrangement interval, the accident occurrence point 4 in the gas compartment notified from the accident occurrence detection calculator 10 is specified.

（事故点標定装置の動作）
図３は、図１に示す事故点標定装置の動作を説明する図である。図３では、事故発生タイミング１４と、検出器６ａ，６ｂの検出波形１５ａ，１５ｂと、波形検知器１１ａ，１１ｂの出力パルス１６ａ，１６ｂとの関係が示されている。なお、検出器６ａ，６ｂは、上記した（１）のガス圧力の上昇を検知するガス圧力センサであるとして説明する。 (Operation of accident location system)
FIG. 3 is a diagram for explaining the operation of the accident location system shown in FIG. FIG. 3 shows the relationship between the accident occurrence timing 14, the detection waveforms 15a and 15b of the detectors 6a and 6b, and the output pulses 16a and 16b of the waveform detectors 11a and 11b. The detectors 6a and 6b will be described as gas pressure sensors that detect the increase in gas pressure described in (1) above.

金属容器１内の事故発生点４で事故が発生すると、アークが発生し、そのアークの近傍で絶縁ガスのガス圧力が急激に上昇して圧力波を生ずる。発生した圧力波は、主に発生するアークのエネルギーに応じた伝搬速度でもって、事故発生点４を起点に当該ガス区画内を長手方向の両側に分かれて伝搬していく。そして、当該ガス区画内を長手方向の両側に分かれて伝搬する圧力波は、事故発生点４から検出器６ａ，６ｂまでの距離に応じた時間差をもって検出器６ａ，６ｂに検知されるので、検出器６ａ，６ｂの出力にはパルス状の検出波形１５ａ，１５ｂが観測される。その後、さらに、圧力波は、反射を繰り返し、パルス状の形態から当該ガス区画内の平均的な上昇圧力として観測される形態になる。   When an accident occurs at the accident occurrence point 4 in the metal container 1, an arc is generated, and the gas pressure of the insulating gas rapidly increases in the vicinity of the arc to generate a pressure wave. The generated pressure wave is propagated while being divided into both sides in the longitudinal direction in the gas section starting from the accident occurrence point 4 at a propagation speed mainly corresponding to the energy of the generated arc. The pressure wave propagating separately in the longitudinal direction in the gas compartment is detected by the detectors 6a and 6b with a time difference corresponding to the distance from the accident occurrence point 4 to the detectors 6a and 6b. Pulse-like detection waveforms 15a and 15b are observed at the outputs of the devices 6a and 6b. Thereafter, the pressure wave repeats reflection and changes from a pulse-like form to a form observed as an average rising pressure in the gas compartment.

事故発生検出演算器１０は、検出器６ａの出力に最初に観測されたパルス状の検出波形１５ａの振幅が予め定めた判定閾値を超える場合に、事故発生を検出し、当該ガス区画を判定部１３に通知する。   The accident occurrence detection computing unit 10 detects the occurrence of an accident when the amplitude of the pulse-like detection waveform 15a first observed in the output of the detector 6a exceeds a predetermined determination threshold value, and determines the gas section. 13 is notified.

図３に示すように、検出器６ａがパルス状の圧力波に応答したタイミングが、事故発生タイミング１４から時間Δｔａ経過後であり、検出器６ａがパルス状の圧力波に応答したタイミングが、事故発生タイミング１４から時間Δｔａよりも長い時間Δｔｂ経過後であるとする。   As shown in FIG. 3, the timing when the detector 6a responds to the pulsed pressure wave is after the time Δta has elapsed from the accident occurrence timing 14, and the timing when the detector 6a responds to the pulsed pressure wave is the accident. It is assumed that a time Δtb longer than the time Δta has elapsed from the generation timing 14.

波形検知器１１ａは、検出器６ａの出力変化タイミングを検出してパルス１６ａを発生し、波形検知器１１ｂは、検出器６ｂの出力変化タイミングを検出してパルス１６ｂを発生し、それぞれ時間差演算器１２に送られる。   The waveform detector 11a detects the output change timing of the detector 6a and generates a pulse 16a, and the waveform detector 11b detects the output change timing of the detector 6b and generates a pulse 16b, each of which is a time difference calculator. 12 is sent.

時間差演算器１２は、例えば、パルス１６ａの前縁とパルス１６ｂの前縁との間の時間差Δｔを求め、判定部１３に与える。   The time difference calculator 12 obtains, for example, a time difference Δt between the leading edge of the pulse 16a and the leading edge of the pulse 16b, and provides the time difference Δt to the determination unit 13.

判定部１３は、圧力波の伝搬速度ｖ［ｍ／秒］と、ガス区画毎の検知器６ａ，６ｂ間の距離Ｌとをデフォルト値として有している。そして、今回、時間差演算器１２から通知された時間差Δｔを既知の値として入力されると、事故発生検出演算器１０から通知された事故発生ガス区画において、事故発生点４は不明であるが、その事故発生点４から検知器６ａまでの距離をＬａとし、事故発生点４から検知器６ｂまでの距離をＬｂとすれば、既知のＬ、ｖ、Δｔを用いて、
ｖ×Δｔ＝Ｌａ−Ｌｂ、Ｌ＝Ｌａ＋Ｌｂ ……（１）
と表せるので、この式（１）を用いて、事故発生検出演算器１０から通知されたガス区画内において、検出器６ａ，６ｂから事故発生点４までの距離Ｌａ，Ｌｂを求めることができる。つまり、検出器６ａ，６ｂの位置を基準に事故発生点４を特定することができる。 The determination unit 13 has, as default values, the pressure wave propagation velocity v [m / sec] and the distance L between the detectors 6a and 6b for each gas section. Then, when the time difference Δt notified from the time difference calculator 12 is input as a known value this time, the accident occurrence point 4 is unknown in the accident occurrence gas section notified from the accident occurrence detection calculator 10. If the distance from the accident occurrence point 4 to the detector 6a is La and the distance from the accident occurrence point 4 to the detector 6b is Lb, then using known L, v, Δt,
v × Δt = La−Lb, L = La + Lb (1)
Therefore, using this equation (1), the distances La and Lb from the detectors 6a and 6b to the accident occurrence point 4 can be obtained in the gas section notified from the accident occurrence detection computing unit 10. That is, the accident occurrence point 4 can be specified based on the positions of the detectors 6a and 6b.

（実験例）
実際に実験して検証した。図４は、実験装置の構成例を示す概念図である。図４に示すように、長尺の金属容器２０を用意し、圧力センサ２１ａ，２１ｂを１４ｍの間隔を置いて配置し、圧力センサ２１ａ，２１ｂの配置間の外（地絡発生点２２）で地絡を発生させた。このケースでは、地絡発生点２２から圧力センサ２１ａまでの距離をＬａとすると、地絡発生点２２から圧力センサ２１ｂまでの距離Ｌｂは、Ｌｂ＝Ｌ＋Ｌａである。 (Experimental example)
It was actually tested and verified. FIG. 4 is a conceptual diagram illustrating a configuration example of the experimental apparatus. As shown in FIG. 4, a long metal container 20 is prepared, and pressure sensors 21a and 21b are arranged at an interval of 14 m, outside the arrangement of the pressure sensors 21a and 21b (ground fault occurrence point 22). A ground fault was generated. In this case, if the distance from the ground fault occurrence point 22 to the pressure sensor 21a is La, the distance Lb from the ground fault occurrence point 22 to the pressure sensor 21b is Lb = L + La.

図５は、図４に示す圧力センサ２１ａ，２１ｂが検出する圧力波を示す波形図である。地絡発生点２２で地絡を発生させた場合の圧力波に対して、まず圧力センサ２１ａが応答し、次に圧力センサ２１ｂが応答する。圧力センサ２１ａの検出波形２３ａと圧力センサ２１ｂの検出波形２３ｂとの時間差は約１００ｍｓと計測された。また、圧力波の伝搬速度ｖは、ｖ≒１４０ｍ／秒と計測された。これらの値を用いて式（１）から、距離Ｌａ，Ｌｂを求めることで、地絡発生点２２を特定できた。   FIG. 5 is a waveform diagram showing pressure waves detected by the pressure sensors 21a and 21b shown in FIG. The pressure sensor 21a responds first and then the pressure sensor 21b responds to the pressure wave when a ground fault is generated at the ground fault generation point 22. The time difference between the detection waveform 23a of the pressure sensor 21a and the detection waveform 23b of the pressure sensor 21b was measured to be about 100 ms. The pressure wave propagation velocity v was measured as v≈140 m / sec. The ground fault occurrence point 22 could be specified by obtaining the distances La and Lb from the equation (1) using these values.

この実験例から、ガス区画が１０メートルを超える長尺であっても、また、事故発生点が２つの検出器の配置間になく外にあっても、事故発生点の位置情報を得ることが可能になることが判明した。   From this experimental example, it is possible to obtain the position information of the accident point even if the gas section is longer than 10 meters or the accident point is not between the two detectors. It turned out to be possible.

このように、実施の形態１によれば、事故を発生したガス区画の標定に加えて、詳細な事故発生点の位置情報を得ることができる。したがって、１０メートルを超えるようなガス区画を画成される長尺の金属容器である場合も、復旧作業の迅速化が図れる。   Thus, according to Embodiment 1, in addition to the orientation of the gas section where the accident occurred, detailed position information of the accident occurrence point can be obtained. Therefore, even in the case of a long metal container in which a gas compartment exceeding 10 meters is defined, the restoration work can be speeded up.

実施の形態２．
図６は、この発明の実施の形態２として、ガス絶縁電力機器の電路を開閉する開閉装置が存在する場合（その１）の事故点標定装置の構成を示す概念図である。図７は、この発明の実施の形態２として、ガス絶縁電力機器の電路を開閉する開閉装置が存在する場合（その２）の事故点標定装置の構成を示す概念図である。 Embodiment 2. FIG.
FIG. 6 is a conceptual diagram showing the configuration of an accident point locating device when there is an open / close device that opens and closes an electric circuit of a gas-insulated power apparatus as Embodiment 2 of the present invention. FIG. 7 is a conceptual diagram showing the configuration of an accident point locating device when there is an open / close device that opens and closes an electric circuit of a gas-insulated power apparatus as Embodiment 2 of the present invention (part 2).

図６と図７では、図１（実施の形態１）に示した構成において、金属容器１内の課電導体２には、断路器２５が介在している。そして、信号処理装置７に代えて、信号処理装置２７が設けられている。   6 and 7, in the configuration shown in FIG. 1 (Embodiment 1), a disconnector 25 is interposed in the electric conductor 2 in the metal container 1. In place of the signal processing device 7, a signal processing device 27 is provided.

図６では、断路器２５がガス区画内の中央に配置される場合が示されている。検出器６ａは、絶縁スペーサ３ａと断路器２５との間に配置され、検出器６ｂは、絶縁スペーサ３ｂと断路器２５との間に配置されている。   In FIG. 6, the case where the disconnector 25 is arrange | positioned in the center in a gas division is shown. The detector 6 a is disposed between the insulating spacer 3 a and the disconnector 25, and the detector 6 b is disposed between the insulating spacer 3 b and the disconnector 25.

図７では、断路器２５がガス区画内の中央位置から外れた位置に配置される場合が示されている。検出器６ａは、絶縁スペーサ３ａ側において、検出器６ｂは、絶縁スペーサ３ｂ側において、それぞれ断路器２５から等しい間隔で配置されている。   In FIG. 7, the case where the disconnector 25 is arrange | positioned in the position which remove | deviated from the center position in a gas division is shown. The detectors 6a are arranged at equal intervals from the disconnector 25 on the insulating spacer 3a side, and the detectors 6b are arranged on the insulating spacer 3b side, respectively.

上記した実施の形態１では、具体的に事故発生位置を特定する場合を示したが、ガス区画の長手方向のいずれの側で事故が発生したかが解れば、復旧作業の迅速化を同様に図ることができる。２つの検出器６ａ，６ｂは、ガス区画の長手方向に配置してあるので、この方式を採ることができる。   In the first embodiment described above, the case where the accident occurrence position is specifically specified has been shown. However, if it is understood on which side in the longitudinal direction of the gas section the accident has occurred, the restoration work can be speeded up similarly. Can be planned. Since the two detectors 6a and 6b are arranged in the longitudinal direction of the gas compartment, this method can be adopted.

そこで、この実施の形態２による事故点標定装置の信号処理装置２７は、２つの検出器６ａ，６ｂのそれぞれが事故発生に起因する現象を検出したタイミングの前後関係を比較して、先に検出した検出器の配置位置周辺を当該ガス区画内での事故発生位置と特定するように構成してある。   Therefore, the signal processing device 27 of the accident point locating device according to the second embodiment compares the timing relationships when the two detectors 6a and 6b detect the phenomenon caused by the occurrence of the accident, and detects them first. The vicinity of the arranged position of the detected detector is specified as the accident occurrence position in the gas section.

この実施の形態２による上記した方式は、図１に示したガス絶縁電力機器の構成においても当然に適用可能であるが、図６や図７に示すように、ガス絶縁電力機器の課電導体２に断路器２５のような電気の流れを開閉する開閉装置が介在する場合に、２つの検出器６ａ，６ｂを、断路器２５を挟んだ両側に配置することができるので、特に有効な措置となる。   The above-described method according to the second embodiment is naturally applicable to the configuration of the gas-insulated power apparatus shown in FIG. 1, but as shown in FIGS. 2 is equipped with an opening / closing device that opens and closes an electric flow, such as the disconnector 25, the two detectors 6a and 6b can be arranged on both sides of the disconnector 25. It becomes.

すなわち、図６や図７で言えば、事故の発生したガス区画において、例えば、絶縁スペーサ３ａ側の検出器６ａが先に事故発生に起因する現象を検出したとすれば、絶縁スペーサ３ａと断路器２５との間に事故発生位置があると判断できるので、断路器２５を開路（オフ）することで、絶縁スペーサ３ｂ側を事故発生側から切り離すことができ、絶縁スペーサ３ｂ側に繋がる部分のみを迅速に復旧させることが可能になる。   That is, in FIG. 6 and FIG. 7, in the gas section where the accident occurred, for example, if the detector 6a on the insulating spacer 3a side detects the phenomenon caused by the accident first, the insulating spacer 3a and the disconnection are disconnected. Since it can be determined that there is an accident occurrence position with the device 25, the insulating spacer 3b side can be disconnected from the accident occurrence side by opening the disconnector 25 (off), and only the portion connected to the insulating spacer 3b side Can be recovered quickly.

この実施の形態２による方式によれば、２つの検出器６ａ，６ｂのうち、単に、最も速く応答した方の検出器を特定すればよいので、信号処理装置２７を信号処理装置７よりも単純な回路構成とすることができる。   According to the method according to the second embodiment, it is only necessary to specify the detector that responds the fastest of the two detectors 6a and 6b, so that the signal processing device 27 is simpler than the signal processing device 7. A simple circuit configuration.

また、金属容器１内で発生したアークによる現象が完全には解明されていなくとも、例えば伝搬速度の値が解明されていなくとも、事故の発生したガス区画内において事故発生位置を特定する事故点標定装置を構築することが可能であり、実用化が可能な方式であると言える。   Further, even if the phenomenon caused by the arc generated in the metal container 1 is not completely clarified, for example, the value of the propagation velocity is not clarified, the accident point for identifying the accident occurrence position in the gas section where the accident has occurred. It can be said that the orientation device can be constructed and can be put to practical use.

以上のように、この発明にかかるガス絶縁電力機器の事故点標定装置は、ガス絶縁電力機器において内部地絡・短絡事故が発生した場合に、単に事故の発生したガス区画を特定するだけでなく、そのガス区画内のいずれの位置で発生したかの詳細な発生位置を判別することのできる事故点標定装置として有用である。   As described above, the accident point locating device for gas-insulated power equipment according to the present invention not only identifies the gas section where the accident has occurred when an internal ground fault or short-circuit accident occurs in the gas-insulated power equipment. It is useful as an accident point locating device that can determine the detailed occurrence position at which position in the gas compartment.

この発明の実施の形態１によるガス絶縁電力機器の事故点標定装置の構成を示す概念図である。It is a conceptual diagram which shows the structure of the accident point location apparatus of the gas insulated power equipment by Embodiment 1 of this invention. 図１に示す信号処理装置の構成例を示すブロック図である。It is a block diagram which shows the structural example of the signal processing apparatus shown in FIG. 事故点標定装置の動作を説明する図である。It is a figure explaining operation | movement of an accident point location apparatus. 実験装置の構成例を示す概念図である。It is a conceptual diagram which shows the structural example of an experimental apparatus. 図４に示す圧力センサが検出する圧力波を示す波形図である。It is a wave form diagram which shows the pressure wave which the pressure sensor shown in FIG. 4 detects. この発明の実施の形態２として、ガス絶縁電力機器の電路を開閉する開閉装置が存在する場合（その１）の事故点標定装置の構成を示す概念図である。It is a conceptual diagram which shows the structure of the accident point location apparatus when the switchgear which opens and closes the electric circuit of gas insulated power equipment exists as Embodiment 2 of this invention (the 1). この発明の実施の形態２として、ガス絶縁電力機器の電路を開閉する開閉装置が存在する場合（その２）の事故点標定装置の構成を示す概念図である。It is a conceptual diagram which shows the structure of the accident point location apparatus when the switchgear which opens and closes the electric circuit of gas insulated power equipment exists as Embodiment 2 of this invention (the 2).

符号の説明Explanation of symbols

１ 金属容器
２ 課電導体
３ａ，３ｂ 絶縁スペーサ
４ 事故発生点
６ａ，６ｂ 検出器
７，２７ 信号処理装置
１０ 事故発生検出演算器
１１ａ，１１ｂ 波形検知器
１２ 時間差演算器
１３ 判定器
２０ 長尺金属容器
２１ａ，２１ｂ 圧力センサ
２２ 地絡発生点
２５ 断路器 DESCRIPTION OF SYMBOLS 1 Metal container 2 Electrical conductor 3a, 3b Insulating spacer 4 Accident occurrence point 6a, 6b Detector 7, 27 Signal processing device 10 Accident occurrence detection calculator 11a, 11b Waveform detector 12 Time difference calculator 13 Judgment device 20 Long metal Container 21a, 21b Pressure sensor 22 Ground fault occurrence point 25 Disconnector

Claims (8)

ガス絶縁電力機器の金属容器内に画成される複数のガス区画のそれぞれに対して当該ガス区画の長手方向に所定の間隔を置いて配置され、対応する前記ガス区画内で発生した地絡事故或いは短絡事故に起因する現象を検出する２つの検出器と、
事故発生によるアークによって発生する圧力波の速度と、前記２つの検出器のそれぞれが前記事故発生に起因する現象を検出したタイミングの時間差と、前記２つの検出器の前記配置間隔とに基づき、当該ガス区画内での事故発生位置を特定する信号処理部と、
を備えていることを特徴とするガス絶縁電力機器の事故点標定装置。 A ground fault occurred in each of a plurality of gas compartments defined in a metal container of a gas insulated power device at a predetermined interval in the longitudinal direction of the gas compartment, and occurred in the corresponding gas compartment. Or two detectors to detect the phenomenon caused by a short circuit accident,
Based on the velocity of the pressure wave generated by the arc due to the occurrence of the accident, the time difference of the timing at which each of the two detectors detects the phenomenon resulting from the occurrence of the accident, and the arrangement interval of the two detectors, A signal processor that identifies the location of the accident in the gas compartment;
An accident point locating device for gas-insulated power equipment. ガス絶縁電力機器の金属容器内に画成される複数のガス区画のそれぞれに対して当該ガス区画の長手方向に所定の間隔を置いて配置され、対応する前記ガス区画内で発生した地絡事故或いは短絡事故に起因する現象を検出する２つの検出器と、
前記２つの検出器のそれぞれが前記事故発生に起因する現象を検出したタイミングの前後関係を比較して、先に検出した検出器の配置位置周辺を当該ガス区画内での事故発生位置と特定する信号処理部と、
を備えていることを特徴とするガス絶縁電力機器の事故点標定装置。 A ground fault occurred in each of a plurality of gas compartments defined in a metal container of a gas insulated power device at a predetermined interval in the longitudinal direction of the gas compartment, and occurred in the corresponding gas compartment. Or two detectors to detect the phenomenon caused by a short circuit accident,
Each of the two detectors compares the timing relationship of the detection timing of the phenomenon caused by the occurrence of the accident, and identifies the vicinity of the detector detection position detected earlier as the accident occurrence position in the gas compartment. A signal processing unit;
An accident point locating device for gas-insulated power equipment. 前記ガス区画内に電路を開閉する開閉装置が存在する場合に、前記２つの検出器は、前記開閉装置を挟んだ両側に配置されていることを特徴とする請求項２に記載のガス絶縁電力機器の事故点標定装置。   3. The gas-insulated power according to claim 2, wherein when there is an opening / closing device that opens and closes an electric circuit in the gas section, the two detectors are disposed on both sides of the opening / closing device. Equipment accident location system. 前記検出器は、対応する前記ガス区画における事故発生によるアークによって発生する圧力上昇を検出する装置であることを特徴とする請求項１〜３のいずれか一つに記載のガス絶縁電力機器の事故点標定装置。   The said detector is an apparatus which detects the pressure rise generate | occur | produced by the arc by accident occurrence in the said corresponding gas division, The accident of the gas insulated power equipment as described in any one of Claims 1-3 characterized by the above-mentioned. Pointing device. 前記検出器は、対応する前記ガス区画における事故発生によるアークによって発生する温度上昇を検出する装置であることを特徴とする請求項１〜３のいずれか一つに記載のガス絶縁電力機器の事故点標定装置。   The said detector is an apparatus which detects the temperature rise generate | occur | produced by the arc by accident occurrence in the said corresponding gas division, The accident of the gas insulated power equipment as described in any one of Claims 1-3 characterized by the above-mentioned. Pointing device. 前記検出器は、対応する前記ガス区画における事故発生によるアークによって発生する電磁波を検出する装置であることを特徴とする請求項１〜３のいずれか一つに記載のガス絶縁電力機器の事故点標定装置。   The accident point of the gas insulated power equipment according to any one of claims 1 to 3, wherein the detector is a device that detects an electromagnetic wave generated by an arc caused by an accident occurrence in the corresponding gas section. Orientation device. 前記検出器は、対応する前記ガス区画における事故発生によるアークによって発生する光を検出する装置であることを特徴とする請求項１〜３のいずれか一つに記載のガス絶縁電力機器の事故点標定装置。   The said detector is an apparatus which detects the light which generate | occur | produces by the arc by accident occurrence in the said corresponding gas division, The accident point of the gas insulated power equipment as described in any one of Claims 1-3 characterized by the above-mentioned. Orientation device. 前記検出器は、対応する前記ガス区画における事故発生によるアークによって発生する音響または振動を検出する装置であることを特徴とする請求項１〜３のいずれか一つに記載のガス絶縁電力機器の事故点標定装置。   The said detector is an apparatus which detects the sound or vibration which generate | occur | produces by the arc by accident generation | occurrence | production in the said corresponding gas division, The gas insulated power equipment as described in any one of Claims 1-3 characterized by the above-mentioned. Accident point locator.
JP2008100843A 2008-04-08 2008-04-08 Accident-point standardizing device of gas insulation power apparatus Pending JP2009250847A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2008100843A JP2009250847A (en) 2008-04-08 2008-04-08 Accident-point standardizing device of gas insulation power apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2008100843A JP2009250847A (en) 2008-04-08 2008-04-08 Accident-point standardizing device of gas insulation power apparatus

Publications (1)

Publication Number Publication Date
JP2009250847A true JP2009250847A (en) 2009-10-29

Family

ID=41311715

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2008100843A Pending JP2009250847A (en) 2008-04-08 2008-04-08 Accident-point standardizing device of gas insulation power apparatus

Country Status (1)

Country Link
JP (1) JP2009250847A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102809715A (en) * 2012-08-20 2012-12-05 广州供电局有限公司 On-line fault location device for high-voltage power cable
CN102818971A (en) * 2012-08-20 2012-12-12 广州供电局有限公司 High-voltage electric power cable fault on-line positioning device
KR20140032591A (en) * 2012-09-06 2014-03-17 현대중공업 주식회사 Device fof monitoring internal arc in gas insulated switchgear
CN109298288A (en) * 2018-11-29 2019-02-01 中国矿业大学 The distribution network failure section accurate positioning method of wide area zero-sequence current distributed intelligence
CN113567883A (en) * 2021-07-20 2021-10-29 维沃移动通信有限公司 Grounding device, grounding detection method and electronic equipment

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01320479A (en) * 1988-06-22 1989-12-26 Toshiba Corp Earthing point detector

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01320479A (en) * 1988-06-22 1989-12-26 Toshiba Corp Earthing point detector

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102809715A (en) * 2012-08-20 2012-12-05 广州供电局有限公司 On-line fault location device for high-voltage power cable
CN102818971A (en) * 2012-08-20 2012-12-12 广州供电局有限公司 High-voltage electric power cable fault on-line positioning device
CN102809715B (en) * 2012-08-20 2014-12-10 广州供电局有限公司 On-line fault location device for high-voltage power cable
CN102818971B (en) * 2012-08-20 2015-05-13 广州供电局有限公司 High-voltage electric power cable fault on-line positioning device
KR20140032591A (en) * 2012-09-06 2014-03-17 현대중공업 주식회사 Device fof monitoring internal arc in gas insulated switchgear
KR101884374B1 (en) * 2012-09-06 2018-08-31 현대일렉트릭앤에너지시스템(주) Device fof monitoring internal arc in gas insulated switchgear
CN109298288A (en) * 2018-11-29 2019-02-01 中国矿业大学 The distribution network failure section accurate positioning method of wide area zero-sequence current distributed intelligence
CN113567883A (en) * 2021-07-20 2021-10-29 维沃移动通信有限公司 Grounding device, grounding detection method and electronic equipment

Similar Documents

Publication Publication Date Title
JP2005233837A (en) Measurement method for partial discharge, and apparatus thereof
KR100883266B1 (en) SWNT-UHF Combined Sensor and Gas Insulated Switchgear Using the same
JP2009250847A (en) Accident-point standardizing device of gas insulation power apparatus
JP2017529818A (en) Method and apparatus for detecting arcs in photovoltaic systems
CN107677939A (en) A kind of localization method of electric power GIS Partial Discharge Sources
JP2017529818A5 (en)
CN108896893B (en) Positioning system and positioning method for partial discharge source in electrical equipment
JP2006266820A (en) Method and apparatus for determining partial discharge
JP6118627B2 (en) Vacuum leak monitoring device for vacuum valve
JP2008215864A (en) Partial discharge detection device and partial discharge detection method of rotary electric machine
Hikita Fundamental principles and application of diagnosis for GIS using partial discharge measurements
US11726131B2 (en) Method for detecting an electrical discharge in an electrical apparatus and system therefor
US11609259B2 (en) Method for detecting an electrical discharge in an electrical apparatus and a system therefor
US10228410B2 (en) Device for monitoring partial discharges in an electrical network
JPWO2012157138A1 (en) Tank type switchgear
JP6775438B2 (en) Gas insulated power equipment
CN110196376B (en) High speed protection of power transmission lines
JP5080517B2 (en) Partial discharge monitoring device and partial discharge monitoring method
JPH0690892B2 (en) Abnormality detection device for gas insulated switchgear
JP2007192710A (en) Partial discharge sensing device in panelboard
JP2004053486A (en) Partial discharge detection device and partial discharge detection method
KR102095185B1 (en) Remote diagnostic system with multiple wireless communication devices and method therefor
JP2778390B2 (en) Partial discharge detection device
JPH06118119A (en) Partial discharge detector
JP2003028910A (en) Partial discharge detector

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20101227

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20120626

A02 Decision of refusal

Free format text: JAPANESE INTERMEDIATE CODE: A02

Effective date: 20130108