JP2002027623A - Failure decision device for gas-insulated electrical, apparatus and gas-insulated electric apparatus monitor - Google Patents

Failure decision device for gas-insulated electrical, apparatus and gas-insulated electric apparatus monitor

Info

Publication number
JP2002027623A
JP2002027623A JP2000204814A JP2000204814A JP2002027623A JP 2002027623 A JP2002027623 A JP 2002027623A JP 2000204814 A JP2000204814 A JP 2000204814A JP 2000204814 A JP2000204814 A JP 2000204814A JP 2002027623 A JP2002027623 A JP 2002027623A
Authority
JP
Japan
Prior art keywords
gas
detector
pipe
failure
insulated electric
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP2000204814A
Other languages
Japanese (ja)
Other versions
JP4157257B2 (en
Inventor
Hirohide Aoki
寛英 青木
Hiroyuki Haneuma
洋之 羽馬
Naoyuki Kajita
直幸 梶田
Yasuhiro Maeda
恭宏 前田
Yoshikatsu Honda
義勝 本田
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 JP2000204814A priority Critical patent/JP4157257B2/en
Priority to SG200007207A priority patent/SG111012A1/en
Priority to US09/756,216 priority patent/US6661234B2/en
Priority to EP01300245A priority patent/EP1132746B8/en
Priority to CNB011045477A priority patent/CN1171091C/en
Priority to HK01108355A priority patent/HK1037724A1/en
Publication of JP2002027623A publication Critical patent/JP2002027623A/en
Application granted granted Critical
Publication of JP4157257B2 publication Critical patent/JP4157257B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/02Details
    • H01H33/53Cases; Reservoirs, tanks, piping or valves, for arc-extinguishing fluid; Accessories therefor, e.g. safety arrangements, pressure relief devices
    • H01H33/56Gas reservoirs
    • H01H33/563Gas reservoirs comprising means for monitoring the density of the insulating gas

Landscapes

  • Gas-Insulated Switchgears (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Installation Of Bus-Bars (AREA)
  • Testing Relating To Insulation (AREA)
  • Locating Faults (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a monitor of a gas-insulated electrical apparatus, which has improved monitoring accuracy by using a combination of sensors of different types and the reduced dimensions by taking a gas from a same gas piping system and which can be attached/detached easily. SOLUTION: The apparatus consists of a sensor attachment block 42, which has gas pipings 8 branched from a same gas piping 6 in it and is made of an insulating material, a gas pressure sensor 21 and a cracked gas monitor 21 attached to the branched gas pipings 8 to have their monitoring parts 43 exposed to the gas from the branched gas pipings 8, a valve 42 which is provided in a piping lined with the branched gas piping 8 and can release the internal gas and a case 45, which covers the respective monitors and is fixed to the block 42 are provided.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】この発明は、ガス絶縁電気機
器を構成するガス区分の異常を検出してそのガス区分の
内部にある課電導体の地絡、短絡等の発生の有無を判定
又は監視するガス絶縁電気機器の故障判定装置及びガス
絶縁電気機器用監視装置に関するものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention detects an abnormality in a gas section constituting a gas-insulated electric device and determines or monitors the occurrence of a ground fault, a short circuit, or the like of a power-carrying conductor inside the gas section. The present invention relates to a failure determination device for a gas-insulated electrical device and a monitoring device for the gas-insulated electrical device.

【0002】[0002]

【従来の技術】ガス絶縁電気機器は、円筒形状の金属容
器の内部に、1相分の課電導体を納めたものと、3相分
の課電導体を納めたものとがあり、前者では課電導体の
金属容器への地絡、後者では各相の課電導体の金属容器
への地絡と異相の課電導体との間の短絡とがあるが、こ
の発明の対象となる現象としてはいずれも同じであるの
で便宜上前者の場合について説明する。
2. Description of the Related Art There are two types of gas-insulated electrical equipment: one in which a conductor for one phase is placed in a cylindrical metal container, and the other in which a conductor for three phases is placed. There is a ground fault to the metal container of the power-carrying conductor, and in the latter, there is a ground fault to the metal container of the power-carrying conductor of each phase and a short circuit between the power-carrying conductors of different phases. Are the same, and the former case will be described for convenience.

【0003】従来のガス絶縁電気機器の故障判定装置に
ついて図面を参照しながら説明する。図10は、従来の
ガス絶縁電気機器の故障判定装置を示す構成図である。
図10において、1は絶縁ガスを満たす円筒状の金属容
器、2は金属容器1の内部に納めた課電導体、3a、3
b及び3cは金属容器1をガス区画に仕切ると共に課電
導体2を絶縁支持する絶縁スペーサである。
A conventional apparatus for determining a failure of a gas-insulated electric device will be described with reference to the drawings. FIG. 10 is a configuration diagram illustrating a conventional failure determination device for a gas-insulated electric device.
In FIG. 10, 1 is a cylindrical metal container filled with an insulating gas, 2 is a power conductor contained in the metal container 1, 3 a, 3
Reference numerals b and 3c denote insulating spacers that partition the metal container 1 into gas compartments and that insulate and support the power application conductor 2.

【0004】また、同図において、11は金属容器1に
取付けて連通配管4により一括管理するガス区分のガス
圧に対応したガス圧信号を検出するガス圧力検出器、1
2は外部からの地絡電流検出信号の入力により所定時間
後にガス圧力検出器11の出力するガス圧信号をサンプ
リングするサンプリング回路、13はサンプリング回路
12でサンプリングしたガス圧信号と閾値を比較してサ
ンプリングしたガス圧力の方が大きければ地絡の発生あ
りと判定する故障判定回路である。
In FIG. 1, reference numeral 11 denotes a gas pressure detector which is attached to the metal container 1 and detects a gas pressure signal corresponding to the gas pressure of a gas section which is collectively managed by the communication pipe 4.
Reference numeral 2 denotes a sampling circuit that samples a gas pressure signal output from the gas pressure detector 11 after a predetermined time in response to an input of a ground fault current detection signal from outside, and 13 compares the gas pressure signal sampled by the sampling circuit 12 with a threshold value. This is a failure determination circuit that determines that a ground fault has occurred if the sampled gas pressure is higher.

【0005】次に、前述した従来のガス絶縁電気機器の
故障判定装置の動作について図面を参照しながら説明す
る。図11は、従来のガス絶縁電気機器の故障判定装置
のガス圧力検出器で検出したガス圧信号を示す波形図で
ある。金属容器1を絶縁スペーサ3aと3bで仕切った
ガス区画を連通配管4で一括管理するガス区分で、課電
導体2と金属容器1との間で地絡すると、そのガス区画
ではアークの近傍で絶縁ガスの圧力が急激に上昇して圧
力波を生じる。この圧力波による絶縁ガスの動圧に対応
するガス動圧信号が、連通配管4でつながれた隣接する
ガス区画に満たした絶縁ガスの静圧に対応するガス静圧
信号に重畳したガス圧信号として、ガス圧力検出器11
で検出される。
[0005] Next, the operation of the above-described conventional failure judging device for gas-insulated electric equipment will be described with reference to the drawings. FIG. 11 is a waveform diagram showing a gas pressure signal detected by a gas pressure detector of a conventional failure determination device for gas-insulated electrical equipment. A gas section in which a metal container 1 is partitioned by insulating spacers 3a and 3b is collectively managed by a communication pipe 4, and when a ground fault occurs between the power-supplying conductor 2 and the metal container 1, a gas section near the arc in the gas section. The pressure of the insulating gas rises sharply, producing a pressure wave. The gas dynamic pressure signal corresponding to the dynamic pressure of the insulating gas due to the pressure wave is a gas pressure signal superimposed on the gas static pressure signal corresponding to the static pressure of the insulating gas filled in the adjacent gas compartment connected by the communication pipe 4. , Gas pressure detector 11
Is detected by

【0006】サンプリング回路12には、このガス圧信
号と、地絡が発生してから所定時間後に外部から地絡電
流検出信号とが入力されるので、サンプリング回路12
は、この地絡電流検出信号の入力時点T1から所定時間
tを経過した時点T2におけるガス圧信号P2をサンプ
リングする(図11参照)。
The gas pressure signal and the ground fault current detection signal are input to the sampling circuit 12 from the outside a predetermined time after the occurrence of the ground fault.
Samples the gas pressure signal P2 at a time point T2 when a predetermined time t has elapsed from the input time point T1 of the ground fault current detection signal (see FIG. 11).

【0007】故障判定回路13では、このサンプリング
したガス圧信号P2の方が閾値Ptに比較して大きけれ
ば、地絡の発生ありと判定する(図11ではガス圧信号
P2の方が大きくなっている)。なお、図10に示して
いないが、他のガス区分でも金属容器1にガス圧力検出
器11を取付けてサンプリング回路、故障判定回路に接
続し、地絡の発生の有無を判定するようになっている。
If the sampled gas pressure signal P2 is larger than the threshold value Pt, the failure judgment circuit 13 judges that a ground fault has occurred (in FIG. 11, the gas pressure signal P2 becomes larger). There). Although not shown in FIG. 10, a gas pressure detector 11 is attached to the metal container 1 for other gas classifications and connected to a sampling circuit and a failure determination circuit to determine whether a ground fault has occurred. I have.

【0008】[0008]

【発明が解決しようとする課題】上述したような従来の
ガス絶縁電気機器の故障判定装置では、ガス圧力検出器
11で検出するガス圧信号が大体、図11に示す形状に
なるものとして地絡電流検出信号の入力時点T1から所
定時間tを経過した時点T2におけるガス圧信号P2を
サンプリングし、所定の閾値Ptと比較してガス圧信号
P2の方が大きければ、地絡の発生ありと判定している
が、絶縁スペーサ3aと3bの間にある金属容器1の大
きさや地絡の際のアークエネルギー、地絡の継続時間な
どによりガス圧上昇は図11と異なることがあり、ま
た、閾値も一義的に設定できないので、地絡の発生の有
無を的確に判定することが出来ないという問題点があっ
た。
In the above-mentioned conventional apparatus for judging the failure of gas-insulated electrical equipment, the gas pressure signal detected by the gas pressure detector 11 is assumed to have a shape shown in FIG. The gas pressure signal P2 at a time point T2 after a predetermined time t has elapsed from the input time point T1 of the current detection signal is sampled. If the gas pressure signal P2 is larger than a predetermined threshold value Pt, it is determined that a ground fault has occurred. However, the gas pressure rise may be different from that in FIG. 11 depending on the size of the metal container 1 between the insulating spacers 3a and 3b, the arc energy at the time of the ground fault, the duration of the ground fault, and the like. However, there is a problem that the presence or absence of the occurrence of a ground fault cannot be accurately determined.

【0009】この発明は、前述した問題点を解決するた
めになされたもので、絶縁スペーサの間隔等の構造的な
制約や地絡時のアークエネルギー、継続時間などの地絡
時の条件に左右されることなく的確に地絡発生ガス区分
を標定する為に、異種センサの組み合わせにより判定の
確度を向上し、事故発生時の事故除去作業を短縮するこ
とができるガス絶縁電気機器の故障判定装置及びガス絶
縁電気機器用監視装置を得ることを目的とする。さらに
占有スペースを抑えることを目的とする。
SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and depends on structural constraints such as the spacing of insulating spacers and conditions at the time of a ground fault such as arc energy and duration of a ground fault. A failure determination device for gas-insulated electrical equipment that can improve the accuracy of determination by combining different types of sensors and shorten the time to clear accidents when an accident occurs, in order to accurately determine the class of ground-faulting gas without being detected. And a monitoring device for gas-insulated electrical equipment. Another object is to reduce the occupied space.

【0010】[0010]

【課題を解決するための手段】この発明に係わるガス絶
縁電気機器の故障判定装置は、金属容器と、絶縁ガスが
満たされた前記金属容器の内部に納められた課電導体
と、この課電導体を前記金属容器から絶縁支持し前記金
属容器の内部をガス区分として仕切る複数の絶縁スペー
サとを有するガス絶縁電気機器の故障判定を行うものに
おいて、前記ガス区分のガス圧を検出するガス圧力検出
器と、このガス圧力検出器の出力が第1の閾値を超える
と事故発生ガス区分と判定する第1の故障判定回路と、
前記ガス区分の分解ガスを検出する分解ガス検出器と、
この分解ガス検出器の出力が第2の閾値を超えると事故
発生ガス区分と判定する第2の故障判定回路と、前記第
1及び第2の故障判定回路の判定出力に基いて、前記第
1の閾値を超えた圧力上昇が発生した前記ガス区分内に
前記第2の閾値を超えた分解ガスが発生しているときに
は、前記金属容器の当該ガス区分に故障の発生ありと判
定する演算制御回路とを備え、前記各検出器は、前記ガ
ス区分から導出した同一ガス配管系に配置したものであ
る。
According to the present invention, there is provided a failure judging device for a gas-insulated electric device, comprising: a metal container; a power conductor accommodated in the metal container filled with an insulating gas; A gas pressure detector for detecting a gas pressure in a gas section of a gas-insulated electrical device having a plurality of insulating spacers that insulate and support a conductor from the metal container and partition the inside of the metal container as a gas section. A first failure determination circuit that determines an accident-occurring gas classification when an output of the gas pressure detector exceeds a first threshold value;
A cracked gas detector for detecting a cracked gas in the gas section;
When the output of the cracked gas detector exceeds a second threshold value, a second failure determination circuit that determines that the gas is in an accident-causing gas category, and the first failure determination circuit based on the determination output of the first and second failure determination circuits. An operation control circuit for determining that a failure has occurred in the gas section of the metal container when a decomposition gas exceeding the second threshold is generated in the gas section in which a pressure rise exceeding the threshold has occurred. And the detectors are arranged in the same gas piping system derived from the gas section.

【0011】また、各検出器は、ガス区分から導出した
同一ガス配管を分岐したガス配管にそれぞれ配置したも
のである。
Each of the detectors is such that the same gas pipe derived from the gas section is disposed on a branched gas pipe.

【0012】また、同一のガス配管から分岐したガス配
管を内部に有する絶縁物製の検出器装着ブロック、この
装着ブロックの分岐ガス配管にそれぞれ装着したガス圧
力検出器と分解ガス検出器、これらの各検出器を被い、
前記ブロックに固定したケースを備えたものである。
Also, a detector mounting block made of an insulator having therein a gas pipe branched from the same gas pipe, a gas pressure detector and a decomposition gas detector respectively mounted on the branch gas pipe of the mounting block, Cover each detector,
It is provided with a case fixed to the block.

【0013】また、同一のガス配管から分岐したガス配
管を内部に有するブロック、このブロックの前記分岐ガ
ス配管にそれぞれ装着したガス圧力検出器と分解ガス検
出器、これらの各検出器を被い、前記ブロックに固定し
たケースを備えたものである。
A block having therein a gas pipe branched from the same gas pipe, a gas pressure detector and a decomposition gas detector attached to the branch gas pipe of the block, and covering these detectors, It is provided with a case fixed to the block.

【0014】また、ガス区分の絶縁ガスの温度を検出す
る温度検出器を分解ガス検出器に組み込んだものであ
る。
Further, a temperature detector for detecting the temperature of the insulating gas in the gas section is incorporated in the decomposition gas detector.

【0015】また、この発明に係るガス絶縁電気機器用
監視装置は、同一のガス配管から分岐したガス配管を内
部に有する絶縁物製の検出器装着ブロック、この装着ブ
ロックの分岐ガス配管のガスに検出部を晒して前記分岐
ガス配管にそれぞれ装着したガス圧力検出器と分解ガス
検出器、前記分岐ガス配管に連通した配管に設け内部ガ
スを放出し得る開閉バルブ、前記各検出器を被い、前記
ブロックに固定したケースを備えたものである。
Further, a monitoring apparatus for a gas-insulated electric device according to the present invention is a detector mounting block made of an insulator having therein a gas pipe branched from the same gas pipe, and a gas for a gas in a branch gas pipe of the mounting block. A gas pressure detector and a decomposition gas detector attached to each of the branch gas pipes by exposing a detection unit, an opening / closing valve provided in a pipe connected to the branch gas pipe and capable of discharging internal gas, covering each of the detectors, It is provided with a case fixed to the block.

【0016】[0016]

【発明の実施の形態】この発明に係るガス絶縁電気機器
の故障判定装置について、図面を参照しながら説明す
る。図1は、この発明に係るガス絶縁電気機器の故障判
定装置の基礎技術を示す構成図である。なお、各図中、
同一符号は同一又は相当部分を示す。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An apparatus for determining a failure of a gas-insulated electrical device according to the present invention will be described with reference to the drawings. FIG. 1 is a configuration diagram showing a basic technique of a failure determination device for a gas-insulated electric device according to the present invention. In each figure,
The same reference numerals indicate the same or corresponding parts.

【0017】図1において、1はガス絶縁電気機器の円
筒状の金属容器、2は絶縁ガスが満たされた金属容器1
の内部に納められた課電導体、3a〜3cは課電導体2
を金属容器1から絶縁支持し金属容器1の内部をガス区
分として仕切る絶縁スペーサ、14は地絡による高速な
現象、例えば、ガス圧を検出するための高速現象用セン
サ、15は地絡による低速な現象、例えば、分解ガスを
検出するための低速現象用センサ、13は故障判定回
路、24は故障判定回路、25は2種類のセンサを用い
た判定結果を使用して当該ガス区分での地絡の有無の判
定を行う演算制御回路である。
In FIG. 1, reference numeral 1 denotes a cylindrical metal container of a gas-insulated electric device, and 2 denotes a metal container filled with an insulating gas.
, And 3a to 3c are power conductors 2.
Is insulated from the metal container 1 to partition the inside of the metal container 1 as a gas section, a high-speed phenomenon due to a ground fault, for example, a high-speed phenomenon sensor for detecting a gas pressure, and a low-speed sensor 15 due to a ground fault. For example, a sensor for low-speed phenomena for detecting a decomposition gas, 13 is a failure determination circuit, 24 is a failure determination circuit, and 25 is a ground for the gas classification using a determination result using two types of sensors. This is an arithmetic control circuit that determines the presence or absence of a fault.

【0018】次に、このガス絶縁電気機器の故障判定装
置の動作について図面を参照しながら説明する。図2
は、このガス絶縁電気機器の故障判定装置の高速現象用
センサと低速現象用センサの地絡発生後の出力信号の時
間変化を概念的に示した図である。
Next, the operation of the failure judging device for a gas-insulated electric device will be described with reference to the drawings. FIG.
FIG. 4 is a diagram conceptually showing a time change of an output signal of the sensor for high-speed phenomena and the sensor for low-speed phenomena of the failure judging device of the gas-insulated electric device after the occurrence of a ground fault.

【0019】金属容器1を絶縁スペーサ3aと3bで仕
切ったガス区分で課電導体2が金属容器1に地絡する
と、各種の現象が異なる応答速度で発生する。その場
合、高速現象用センサ14で高速な現象、例えば、ガス
圧を検出して故障判定回路13で故障を判定する。
When the power supply conductor 2 is grounded to the metal container 1 in a gas section where the metal container 1 is partitioned by insulating spacers 3a and 3b, various phenomena occur at different response speeds. In that case, a high-speed phenomenon, for example, a gas pressure is detected by the high-speed phenomenon sensor 14, and the failure determination circuit 13 determines a failure.

【0020】同じく低速現象用センサ15を用いて低速
な現象、例えば、分解ガスを検出して故障判定回路24
で故障を判定し、最後に両方の判定結果に基いて、演算
制御回路25で当該ガス区分における地絡の有無を判定
する。すなわち、演算制御回路25は、図2(a)に示
すように、地絡の故障にともなって、数100ms程度
後に、高速現象用センサ14により検出したガス圧の上
昇があって、故障判定回路13により故障であると判定
した後、一定時間経過した後(例えば、数s)、低速現
象用センサ15により検出した分解ガスが、故障判定回
路24により所定濃度を超えたときに故障であると判定
すると、測定ガス区分で地絡の発生が有ると判定する。
Similarly, a low-speed phenomenon, for example, a decomposition gas is detected by using the low-speed phenomenon sensor
, And finally, based on both determination results, the arithmetic and control circuit 25 determines the presence or absence of a ground fault in the gas section. That is, as shown in FIG. 2A, the arithmetic control circuit 25 detects that the gas pressure detected by the high-speed phenomenon sensor 14 has increased several hundred ms after the ground fault, and After a certain period of time (for example, several seconds) has elapsed after it was determined that the gas was faulty by 13, when the decomposition gas detected by the low-speed phenomenon sensor 15 exceeds a predetermined concentration by the fault determination circuit 24, it is considered to be faulty. If it is determined, it is determined that a ground fault has occurred in the measurement gas section.

【0021】このように2種類のセンサを用いて判定す
ることにより信頼性を向上できるという効果がある。な
お、センサとして高速現象用と低速現象用の2個を使用
する場合について説明したが、3個以上使用して同様の
効果を得ることが可能である。
As described above, there is an effect that reliability can be improved by making a determination using two types of sensors. The case where two sensors for high-speed phenomena and those for low-speed phenomena are used has been described, but the same effect can be obtained by using three or more sensors.

【0022】図3は、この発明に係るガス絶縁電気機器
の故障判定装置の基礎技術を示す他の構成図である。図
3において、4はガス区画を連通するガス配管、11は
ガス圧力検出器、12はガス圧力検出器11の出力信号
をサンプリングするサンプリング回路、13は故障判定
回路、21a〜21cはガス区画毎に設置した分解ガス
検出器、22は分解ガス検出器起動回路、23は分解ガ
ス検出器21a〜21cの出力信号をサンプリングする
サンプリング回路、24は分解ガス濃度により異状の有
無を判定する故障判定回路、25はガス圧力検出器11
と分解ガス検出器21a〜21cの情報を元に地絡の有
無の判定などを行う演算制御回路である。
FIG. 3 is another block diagram showing the basic technology of the failure judgment apparatus for gas-insulated electric equipment according to the present invention. In FIG. 3, reference numeral 4 denotes a gas pipe communicating with the gas sections, 11 denotes a gas pressure detector, 12 denotes a sampling circuit for sampling an output signal of the gas pressure detector 11, 13 denotes a failure determination circuit, and 21a to 21c denote gas sections. , A decomposed gas detector starting circuit, a sampling circuit for sampling the output signals of the decomposed gas detectors 21a to 21c, and a failure determination circuit for determining the presence or absence of an abnormality based on the decomposed gas concentration. , 25 are gas pressure detectors 11
And an arithmetic control circuit for determining the presence / absence of a ground fault based on the information of the cracked gas detectors 21a to 21c.

【0023】次に、このガス絶縁電気機器の故障判定装
置の動作について図面を参照しながら説明する。金属容
器1を絶縁スペーサ3aと3bで仕切ったガス区分で課
電導体2が金属容器1に地絡すると、地絡電流検出信号
は時間遅れなく動作する。続いて、タンク内部では、ア
ークの近傍で絶縁ガスの圧力が急激に上昇し圧力波とな
って、静圧側に流れ込む、更に、絶縁ガスは、アークエ
ネルギーが発する高熱によって化学分解を起こしFイオ
ンを中心とする分解ガスが発生する。
Next, the operation of the failure judging device for a gas-insulated electric device will be described with reference to the drawings. When the power supply conductor 2 is grounded to the metal container 1 in the gas section where the metal container 1 is partitioned by the insulating spacers 3a and 3b, the ground fault current detection signal operates without time delay. Subsequently, in the tank, the pressure of the insulating gas rapidly rises in the vicinity of the arc and becomes a pressure wave, which flows into the static pressure side. Further, the insulating gas undergoes chemical decomposition due to the high heat generated by the arc energy, thereby generating F ions. A cracked gas is generated at the center.

【0024】演算制御回路25は、地絡電流検出信号に
より、故障発生を認識し、故障判定回路13にn秒間の
サンプリングデータの取得を指示する。更に、分解ガス
検出器起動回路22を起動させ、分解ガス検出器21a
〜21cに電源供給を開始させる。
The arithmetic and control circuit 25 recognizes the occurrence of a failure based on the ground fault current detection signal, and instructs the failure determination circuit 13 to acquire sampling data for n seconds. Further, the cracked gas detector activation circuit 22 is activated, and the cracked gas detector 21a is activated.
To 21c to start power supply.

【0025】ガス圧力検出器11が検出した信号は、サ
ンプリング回路12で平均化処理を行った後、故障判定
回路13に送られ、ガス圧力検出器11が管理するガス
区分毎に閾値を超える圧力差の有無を判定する。閾値を
超えたガス区分を検出すると事故発生ガス区分として演
算制御回路25に出力する。
The signal detected by the gas pressure detector 11 is averaged by a sampling circuit 12 and then sent to a failure determination circuit 13 where the pressure exceeds a threshold value for each gas section managed by the gas pressure detector 11. Determine whether there is a difference. When a gas section exceeding the threshold value is detected, it is output to the arithmetic and control circuit 25 as an accident occurring gas section.

【0026】分解ガス検出器21a〜21cが検出した
信号は、サンプリング回路23で平均化処理を施した
後、故障判定回路24に送られ、ガス区分毎に分解ガス
濃度を閾値と比較して、閾値を超えたガス区分を検出す
ると事故発生ガス区分として演算制御回路25に出力す
る。
The signals detected by the decomposition gas detectors 21a to 21c are averaged by a sampling circuit 23, sent to a failure judgment circuit 24, and the decomposition gas concentration is compared with a threshold value for each gas classification. When a gas section exceeding the threshold value is detected, it is output to the arithmetic and control circuit 25 as an accident occurring gas section.

【0027】演算制御回路25では、分解ガス検出器2
1a〜21cが標定したガス区画がガス圧力検出器11
の標定したガス区分内にあるか否かを判断し、同じであ
れば地絡の発生ありと判定することによって、ガス絶縁
電気機器の故障判定の確度を向上でき、故障部位の確認
時間を短縮することができるという効果がある。
In the arithmetic and control circuit 25, the decomposition gas detector 2
The gas compartment designated by 1a to 21c is the gas pressure detector 11
By determining whether or not the gas is within the specified gas classification and determining that a ground fault has occurred, if it is the same, the accuracy of the failure determination of the gas insulated electrical equipment can be improved, and the confirmation time of the failed part can be shortened There is an effect that can be.

【0028】すなわち、円筒状の金属容器1の内部に課
電導体2を納めて金属容器1の両端を絶縁スペーサ3a
〜3cで仕切ると共に、課電導体2を絶縁スペーサで金
属容器から絶縁支持し、金属容器に絶縁ガスを満たした
ガス区画を連結してガス区分とするガス絶縁電気機器
で、各ガス区分にはガス圧の変化分を検出するガス圧力
検出器11を取付け、各ガス区画には分解ガスをイオン
化して検出する分解ガス検出器21a〜21cを取付
け、地絡電流検出信号を取り込むと共に、ガス圧力検出
器11からガス圧の変化分を取り出すサンプリング回路
12と、変化分の圧力について閾値判定する故障判定回
路13と、前記分解ガス検出器の電源を起動する分解ガ
ス検出器起動回路22と、前記分解ガス検出器からガス
濃度を検出するサンプリング回路23と、分解ガスの発
生有無を判定する故障判定回路24と、閾値を超えた圧
力上昇が発生したガス区分内のガス区画に閾値を超えた
分解ガスが発生している時、地絡、短絡の発生ありと判
定する演算制御回路25を備えた事を特徴とするガス絶
縁電気機器の故障判定装置である。
That is, the power application conductor 2 is placed inside the cylindrical metal container 1 and both ends of the metal container 1 are insulated by the insulating spacers 3a.
3c, the power conductor 2 is insulated and supported from the metal container by an insulating spacer, and the gas container filled with the insulating gas is connected to the metal container to form a gas section. A gas pressure detector 11 for detecting a change in gas pressure is mounted, and a decomposition gas detector 21a to 21c for ionizing and detecting a decomposition gas is mounted in each gas compartment. A sampling circuit 12 for extracting a change in gas pressure from the detector 11, a failure determination circuit 13 for determining a threshold value for the pressure of the change, a decomposition gas detector activation circuit 22 for activating a power supply of the decomposition gas detector, A sampling circuit 23 for detecting a gas concentration from a cracked gas detector, a failure determination circuit 24 for determining whether or not a cracked gas is generated, and a gas having a pressure rise exceeding a threshold. When a cracked gas exceeding a threshold is generated in a gas compartment within a minute, an arithmetic control circuit 25 that determines that a ground fault or short circuit has occurred is provided. is there.

【0029】図1,図3では、ガス区分に対する検出器
の取付け位置が、高速現象用センサ14と低速現象用セ
ンサ15、又はガス圧力検出器11と分解ガス検出器2
1で異なっている。すなわち、同一ガス区分に対して、
各検出器がそれぞれ別個に金属容器1に取付けられてい
る。そのため、内部のガス圧力,温度や組成の変化を金
属容器の別々の個所で測定することになり、それぞれの
検出器より得られた値を用いて故障判定の演算を行う場
合、判定結果の信頼性が低くなるという問題点があっ
た。また、ガス給排気口やガス給排気バルブが多く必要
になり、加工コスト及び部品コストが高くなる。さらに
検出部が多くのスペースを占有するという問題点があっ
た。
In FIGS. 1 and 3, the mounting position of the detector with respect to the gas section is determined by the high-speed phenomenon sensor 14 and the low-speed phenomenon sensor 15, or the gas pressure detector 11 and the decomposition gas detector 2
1 is different. That is, for the same gas category,
Each detector is separately mounted on the metal container 1. Therefore, changes in internal gas pressure, temperature, and composition must be measured at different points in the metal container, and when calculating the failure judgment using the values obtained from the respective detectors, the reliability of the judgment result cannot be guaranteed. There is a problem that the performance is reduced. Further, a large number of gas supply / exhaust ports and gas supply / exhaust valves are required, which increases processing costs and component costs. Further, there is a problem that the detecting unit occupies a large space.

【0030】実施の形態1.図4はこの発明の実施の形
態1に係るガス絶縁電気機器の故障判定装置における検
出器の取付け配置を示す構成図である。図4において、
4は連通配管で、金属容器1のガス区分のガス給排気口
5a,5bに連通して取付けられている。6はガス給排
気バルブ7を介して連通配管4に接続されたガス配管
で、これより分岐したガス配管8を有している。ガス圧
力検出器11,分解ガス検出器21および温度検出器4
1は貫通孔を有する絶縁物9a,9b,9cを介してガ
ス配管8にそれぞれ取付けられている。前記各検出器1
1,21,41の検出部は貫通孔を通して測定ガスに晒
されている。このように、各検出器11,21,41は
同一ガス配管系即ち同一ガス配管6を分岐したガス配管
8にそれぞれ取付けられている。
Embodiment 1 FIG. 4 is a configuration diagram showing a mounting arrangement of the detectors in the failure determination device for a gas-insulated electric device according to Embodiment 1 of the present invention. In FIG.
Reference numeral 4 denotes a communication pipe, which is attached so as to communicate with the gas supply / exhaust ports 5a and 5b of the gas section of the metal container 1. Reference numeral 6 denotes a gas pipe connected to the communication pipe 4 via a gas supply / exhaust valve 7, and has a gas pipe 8 branched therefrom. Gas pressure detector 11, cracked gas detector 21, and temperature detector 4
Reference numeral 1 is attached to the gas pipe 8 via insulators 9a, 9b, 9c having through holes. Each detector 1
The detection units 1, 21 and 41 are exposed to the measurement gas through the through holes. As described above, the detectors 11, 21 and 41 are attached to the same gas pipe system, that is, the gas pipe 8 branched from the same gas pipe 6.

【0031】次に動作について説明する。常時として
は、金属容器1のガス区分において、ガス圧に対応した
ガス圧信号をガス圧力検出器11によって検出し、ガス
温度を温度検出器41によって検出することにより、ガ
ス密度の常時監視を行う。異常時としては、金属容器1
のガス区分において、課電導体2との間で地絡が発生す
ると、絶縁ガスの圧力が急激に上昇するので、その圧力
上昇をガス圧力検出器11によって検出し、続いて、ア
ークエネルギーの高熱によって発生するFイオンを中心
とする分解ガスを分解ガス検出器21によって検出し、
これらの二つの異なる機能により当該ガス区分における
故障判定を行う。詳細動作は図1,図2,図3で説明し
たとおりである。
Next, the operation will be described. As always, in the gas section of the metal container 1, a gas pressure signal corresponding to the gas pressure is detected by the gas pressure detector 11, and the gas temperature is detected by the temperature detector 41, so that the gas density is constantly monitored. . In case of abnormalities, the metal container 1
When a ground fault occurs between the power supply conductor 2 and the power supply conductor 2, the pressure of the insulating gas rapidly rises. Therefore, the pressure rise is detected by the gas pressure detector 11, and then the high heat of the arc energy is detected. A decomposition gas centered on F ions generated by the decomposition gas detector 21;
With these two different functions, the failure judgment in the gas section is performed. The detailed operation is as described with reference to FIGS.

【0032】図4の各検出器11,21,41は、特に
同一ガス配管系即ち同一ガス配管6を分岐したガス配管
8にそれぞれ取付けられている。このように検出器類を
同一のガス配管系に取付けることにより、判定結果の信
頼性が上がり、ガス給排気口5a,5b,ガス給排気バ
ルブ7やガス配管の数を削減でき、金属容器1の加工コ
ストや部品コストを抑えることができ、占有スペースを
削減でき、ガス絶縁電気機器のレイアウトの自由度を向
上させることができる。
The detectors 11, 21 and 41 shown in FIG. 4 are respectively attached to the same gas pipe system, that is, the gas pipe 8 branched from the same gas pipe 6. By attaching the detectors to the same gas piping system in this manner, the reliability of the determination result is increased, and the number of gas supply / exhaust ports 5a, 5b, gas supply / exhaust valves 7 and gas piping can be reduced, and the metal container 1 Therefore, it is possible to reduce processing costs and component costs, reduce the occupied space, and improve the degree of freedom in the layout of the gas-insulated electric device.

【0033】実施の形態2.図5は、この発明の実施の
形態2に係るガス絶縁電気機器の故障判定装置における
検出器の取付け配置を示す構成図である。図において、
5はガス給排気口でガス区分毎に一箇所設けている。図
では、一ガス区分のみ取付け状態を示し、他のガス区分
は図示していない。ガス給排気口5にガス給排気バルブ
7を介してガス配管6が接続されている。このようにガ
ス配管6をガス給排気口5に取付けることも可能で、実
施の形態1と同様の作用効果を奏する。
Embodiment 2 FIG. FIG. 5 is a configuration diagram showing a mounting arrangement of detectors in a failure determination device for a gas-insulated electric device according to Embodiment 2 of the present invention. In the figure,
Reference numeral 5 denotes a gas supply / exhaust port provided at one location for each gas section. In the drawing, only one gas section is shown in an attached state, and the other gas sections are not shown. A gas pipe 6 is connected to the gas supply / exhaust port 5 via a gas supply / exhaust valve 7. As described above, the gas pipe 6 can be attached to the gas supply / exhaust port 5, and the same operation and effect as those of the first embodiment can be obtained.

【0034】実施の形態3.図6は、この発明の実施の
形態3に係るガス絶縁電気機器の故障判定装置における
検出器の取付け配置を示す構成図である。図において、
42は絶縁性検出器装着ブロックで、内部にガス配管6
から分岐したガス配管8を形成している。絶縁性検出器
装着ブロック42には、各検出器の検出部43がガスに
晒されるように空間44を設けて、ガス配管8にそれぞ
れガス圧力検出器11,分解ガス検出器21および温度
検出器41が装着されている。金属容器1と各検出器と
の間は電気的に絶縁が保たれている。
Embodiment 3 FIG. 6 is a configuration diagram showing a mounting arrangement of detectors in a failure determination device for a gas-insulated electric device according to Embodiment 3 of the present invention. In the figure,
Reference numeral 42 denotes an insulating detector mounting block in which a gas pipe 6 is provided.
To form a gas pipe 8 branched from the gas pipe. The insulating detector mounting block 42 is provided with a space 44 so that the detecting portion 43 of each detector is exposed to gas, and the gas pipe 8 is provided with a gas pressure detector 11, a decomposition gas detector 21, and a temperature detector. 41 are attached. Electrical insulation is maintained between the metal container 1 and each detector.

【0035】45はケースで、各検出器を内部に収納し
各検出器が一体となるように全体を被っている。ケース
45はボルト(図示せず)で装着ブロック42に固定さ
れている。46は分岐したガス配管8と連通した配管の
出口に設け内部ガスを放出し得るガス開閉バルブで、ガ
ス給排気バルブ7を閉じた状態で、ガス開閉バルブ46
を開放すると、各検出器およびガス配管6,8内のガス
を外部に放出し得る。同一の絶縁性検出器装着ブロック
42に装着された各検出器11,21,41は、ケース
45内に収納されて、検出器部が一体となり、ガス配管
6,ガス給排気バルブ7及びガス給排気口5を介して金
属容器1のガス区分毎に取付けられている。なお、各故
障判定回路と演算制御回路は、絶縁性検出器装着ブロッ
ク42とケース45の外部で近傍に一括して設けられて
いる。
Reference numeral 45 denotes a case, which houses the detectors therein and covers the whole so that the detectors are integrated. The case 45 is fixed to the mounting block 42 with bolts (not shown). Reference numeral 46 denotes a gas opening / closing valve provided at an outlet of a pipe communicating with the branched gas pipe 8 and capable of discharging internal gas. The gas opening / closing valve 46 is provided with the gas supply / exhaust valve 7 closed.
Is opened, the gas in each detector and the gas pipes 6, 8 can be released to the outside. The detectors 11, 21 and 41 mounted on the same insulating detector mounting block 42 are housed in a case 45, the detector unit is integrated, and the gas pipe 6, the gas supply / exhaust valve 7, and the gas supply It is attached to each metal section of the metal container 1 via the exhaust port 5. Note that the failure determination circuits and the arithmetic and control circuits are collectively provided in the vicinity outside the insulation detector mounting block 42 and the case 45.

【0036】次に動作について説明する。常時として
は、金属容器1 のガス区画において、ガス圧に対応した
ガス圧信号をガス圧力検出器11によって検出し、ガス
温度を温度検出器41によって検出することにより、ガ
ス圧信号を25℃換算して、ガス密度の常時監視を行
う。異常時としては、金属容器1 のガス区分において、
課電導体2 との間で地絡が発生すると、絶縁ガスの圧力
が急激に上昇するので、その圧力上昇をガス圧力検出器
11によって検出し、続いてアークエネルギーの高熱に
よって発生するFイオンを中心とする分解ガスを分解ガ
ス検出器21によって検出し、これら二つの結果を演算
処理することにより該当ガス区分における故障判定を行
う。
Next, the operation will be described. Normally, in the gas compartment of the metal container 1, the gas pressure signal corresponding to the gas pressure is detected by the gas pressure detector 11, and the gas temperature is detected by the temperature detector 41, so that the gas pressure signal is converted to 25 ° C. Then, the gas density is constantly monitored. In the event of an abnormality, in the gas classification of metal container 1,
When a ground fault occurs between the power supply conductor 2 and the power supply conductor 2, the pressure of the insulating gas rapidly increases. Therefore, the pressure increase is detected by the gas pressure detector 11, and subsequently, F ions generated by the high heat of the arc energy are detected. The cracked gas at the center is detected by the cracked gas detector 21, and the two results are subjected to arithmetic processing to determine a failure in the corresponding gas section.

【0037】このように、同一の絶縁物製検出器装着ブ
ロック42上に各検出器を配置することにより、各検出
器の電気的絶縁が保てると同時に、金属容器1の一ヶ所
において同一ガス配管系でガスの状態変化を測定するこ
とが可能となり、それぞれの検出器より得られた値を用
いて演算処理を行う場合に、故障判定結果の信頼性が向
上する。また、ガス給排気口5,ガス給排気バルブ7や
ガス配管の数を削減でき、金属容器1の加工コストや部
品コストを抑えることができ、占有スペースを削減でき
る。また絶縁物製検出器装着ブロック42を用いること
により、金属容器1から各検出器までのガス通路長を短
くすることができ、ガスの状態変化を最小限に抑えるこ
とができ、検出精度や故障判定結果の信頼性が向上す
る。
Thus, by arranging the detectors on the same insulator detector mounting block 42, the electrical insulation of each detector can be maintained, and at the same time, the same gas pipe is provided in one place of the metal container 1. It becomes possible to measure the change in the state of gas in the system, and when performing arithmetic processing using the values obtained from the respective detectors, the reliability of the failure determination result is improved. Further, the number of gas supply / exhaust ports 5, gas supply / exhaust valves 7 and gas pipes can be reduced, so that the processing cost and parts cost of the metal container 1 can be suppressed, and the occupied space can be reduced. In addition, by using the detector mounting block 42 made of an insulator, the length of the gas passage from the metal container 1 to each detector can be shortened, and the change in the gas state can be minimized. The reliability of the judgment result is improved.

【0038】また、空間44を設け、各検出器の検出部
を検出器装着ブロック42に組み込めるように構成した
ことにより、検出器部の寸法が縮小され、ガス絶縁電気
機器のレイアウトの自由度が向上する。またガス開閉バ
ルブ46を設けると、ガス給排気バルブ5を閉じること
により、ガス絶縁電気機器側の絶縁ガスを出し入れする
ことなく、検出器の動作チェックを行うことができる。
またケース45を設けることにより屋外環境や外部より
の衝撃から検出器部を保護することができ、検出器部を
一体として取り扱うことができるので、取付けや取り外
し、持ち運びの際の作業性も改善される。
The space 44 is provided, and the detection unit of each detector can be incorporated in the detector mounting block 42. Therefore, the size of the detector unit is reduced, and the degree of freedom of the layout of the gas insulated electric equipment is increased. improves. When the gas opening / closing valve 46 is provided, the operation check of the detector can be performed by closing the gas supply / exhaust valve 5 without taking in / out of the insulating gas on the gas-insulated electric device side.
In addition, by providing the case 45, the detector unit can be protected from an external environment or an external impact, and the detector unit can be handled as a single unit, so that the workability in mounting, removing, and carrying is improved. You.

【0039】図6において、ガス絶縁電気機器の故障判
定装置の具体的実例の大きさを示す。ガス配管6は内径
が19mmφで、ガス絶縁電気機器用監視装置47は金
属容器1の近傍に配置している。分岐ガス配管8はガス
配管6より細く、空間44は内径がガス配管6より太
い。検出器とガス開閉バルブを有する絶縁性検出器装着
ブロック42とケース45の全体で、ガス絶縁電気機器
用監視装置47を構成し、これは全体で、約長さ150
mm,幅100mm,高さ120mmで、この高さの
内、絶縁性検出器装着ブロック42は50mmである。
この具体的実例により、ガス圧力検出器11,分解ガス
検出器21および温度検出器41で、金属容器1のガス
区分の圧力,濃度及び温度の各データを測定することが
でき、事故判定を行うことができた。
FIG. 6 shows the size of a concrete example of the failure judging device for gas-insulated electric equipment. The gas pipe 6 has an inner diameter of 19 mmφ, and the monitoring device 47 for a gas-insulated electric device is disposed near the metal container 1. The branch gas pipe 8 is thinner than the gas pipe 6, and the space 44 has an inner diameter larger than that of the gas pipe 6. The entirety of the insulating detector mounting block 42 having the detector and the gas switching valve and the case 45 constitute a monitoring device 47 for a gas-insulated electric device, which has a total length of about 150 mm.
mm, width 100 mm, and height 120 mm, of which the insulation detector mounting block 42 is 50 mm.
According to this specific example, the gas pressure detector 11, the decomposition gas detector 21, and the temperature detector 41 can measure each data of the pressure, the concentration, and the temperature of the gas section of the metal container 1, and determine an accident. I was able to.

【0040】実施の形態4.図7は、この発明の実施の
形態4に係るガス絶縁電気機器の故障判定装置における
検出器の取付け配置を示す構成図である。ガス絶縁電気
機器用監視装置47において、ガス圧力検出器11,分
解ガス検出器21、および温度検出器41が同一の金属
製検出器装着ブロック48上にそれぞれ絶縁物49a,
49b,49cを介して配置される。金属製検出器装着
ブロック48の内部には、ガス配管6から分岐したガス
配管8を形成している。金属製検出器装着ブロック48
には、各検出器の検出部43がガスに晒されるように空
間44を設けて、ガス配管8に絶縁物49a,49b,
49cを介して、それぞれガス圧力検出器11,分解ガ
ス検出器21および温度検出器41が装着されている。
金属容器1と各検出器との間は前記絶縁物で電気的に絶
縁が保たれている。ガス開閉バルブ46も同様に設けら
れている。ケース45は、各検出器を収納しこれらを被
って装着ブロック48にボルト(図示せず)で固定され
ている。これらにより安価に検出器部を製造することが
できる。
Embodiment 4 FIG. FIG. 7 is a configuration diagram showing a mounting arrangement of detectors in a failure determination device for a gas-insulated electric device according to Embodiment 4 of the present invention. In the monitoring apparatus 47 for gas-insulated electric equipment, the gas pressure detector 11, the decomposition gas detector 21, and the temperature detector 41 are provided on the same metal detector mounting block 48, respectively, on the insulator 49a,
They are arranged via 49b and 49c. A gas pipe 8 branched from the gas pipe 6 is formed inside the metal detector mounting block 48. Metal detector mounting block 48
Is provided with a space 44 so that the detection unit 43 of each detector is exposed to the gas, and insulators 49a, 49b,
A gas pressure detector 11, a decomposition gas detector 21, and a temperature detector 41 are mounted via 49c, respectively.
Electrical insulation is maintained between the metal container 1 and each detector by the insulator. A gas opening / closing valve 46 is provided similarly. The case 45 houses the detectors, covers them, and is fixed to the mounting block 48 with bolts (not shown). Thus, the detector can be manufactured at low cost.

【0041】このように構成することにより、実施の形
態3と同様の作用効果を奏することができる。なお、絶
縁物49a,49b,49cとして、これらを同一の絶
縁性基板とすることもできる。
With this configuration, the same function and effect as those of the third embodiment can be obtained. The insulators 49a, 49b, and 49c may be the same insulating substrate.

【0042】実施の形態5.図8は、この発明の実施の
形態5に係るガス絶縁電気機器の故障判定装置における
検出器の取付け配置を示す構成図である。図において、
50は絶縁物で、金属製検出器装着ブロック48とガス
給排気口5との間、例えばガス配管6とガス給排気バル
ブ7との間に介在させ、両者を絶縁している。これによ
り、金属製検出器装着ブロック48と各検出器との間の
絶縁物を省略でき、使用する絶縁物の個数が削減され、
部品コストを抑えることができる。
Embodiment 5 FIG. FIG. 8 is a configuration diagram showing a mounting arrangement of detectors in a failure determination device for a gas-insulated electric device according to Embodiment 5 of the present invention. In the figure,
Reference numeral 50 denotes an insulator, which is interposed between the metal detector mounting block 48 and the gas supply / exhaust port 5, for example, between the gas pipe 6 and the gas supply / exhaust valve 7, to insulate them. Thereby, the insulator between the metal detector mounting block 48 and each detector can be omitted, the number of insulators to be used is reduced,
Parts costs can be reduced.

【0043】実施の形態6.図9は、この発明の実施の
形態6に係るガス絶縁電気機器の故障判定装置における
検出器の取付け配置を示す構成図である。図において、
温度検出器を分解ガス検出器に組み込み、温度・ 分解ガ
ス検出器51とし、この温度・ 分解ガス検出器51とガ
ス圧力検出器11が同一の絶縁性検出器装着ブロック5
2上に配置される。検出器装着ブロック52の内部に
は、同様にガス配管6から分岐したガス配管53が形成
され、各検出器の検出部がガスに晒される空間54が形
成されている。46はガス開閉バルブである。ケース4
5で各検出器を被っていることも同様である。
Embodiment 6 FIG. FIG. 9 is a configuration diagram showing a mounting arrangement of detectors in a failure determination device for a gas-insulated electric device according to Embodiment 6 of the present invention. In the figure,
The temperature detector is incorporated into the cracked gas detector to form a temperature / decomposed gas detector 51. The temperature / decomposed gas detector 51 and the gas pressure detector 11 are the same insulated detector mounting block 5.
2 are arranged. Similarly, a gas pipe 53 branched from the gas pipe 6 is formed inside the detector mounting block 52, and a space 54 is formed in which a detection unit of each detector is exposed to gas. 46 is a gas opening / closing valve. Case 4
It is the same that each detector is covered in 5.

【0044】これにより検出器の個数を削減でき検出器
部コストが低減される。また検出器部の小形化が可能と
なり、取付けや取外し、持ち運びの際の作業性の改善、
ガス絶縁電気機器のレイアウトの自由度のさらなる向上
が達成される。なお、ガス給排気バルブ7はガス給排気
口5に直付けされてもよい。
As a result, the number of detectors can be reduced, and the cost of the detector section can be reduced. In addition, the detector can be downsized, which improves the workability when mounting, removing, and carrying.
A further improvement in the degree of freedom in the layout of the gas-insulated electrical equipment is achieved. The gas supply / exhaust valve 7 may be directly attached to the gas supply / exhaust port 5.

【0045】[0045]

【発明の効果】以上説明したように、この発明のガス絶
縁電気機器の故障判定装置によれば、金属容器と、絶縁
ガスが満たされた前記金属容器の内部に納められた課電
導体と、この課電導体を前記金属容器から絶縁支持し前
記金属容器の内部をガス区分として仕切る複数の絶縁ス
ペーサとを有するガス絶縁電気機器の故障判定を行うも
のにおいて、前記ガス区分のガス圧を検出するガス圧力
検出器と、このガス圧力検出器の出力が第1の閾値を超
えると事故発生ガス区分と判定する第1の故障判定回路
と、前記ガス区分の分解ガスを検出する分解ガス検出器
と、この分解ガス検出器の出力が第2の閾値を超えると
事故発生ガス区分と判定する第2の故障判定回路と、前
記第1及び第2の故障判定回路の判定出力に基いて、前
記第1の閾値を超えた圧力上昇が発生した前記ガス区分
内に前記第2の閾値を超えた分解ガスが発生していると
きには、前記金属容器の当該ガス区分に故障の発生あり
と判定する演算制御回路とを備え、前記各検出器は、前
記ガス区分から導出した同一ガス配管系に配置したの
で、異種センサの組み合わせにより判定の確度が向上で
きると共に、同一ガス配管系よりガスを採取するため、
判定結果の信頼性が向上し、ガス給排気口やガス給排気
バルブが少なくなり、加工コスト及び部品コストが低減
し、さらに占有スペースを抑えることができる。
As described above, according to the apparatus for determining a failure of a gas-insulated electric device according to the present invention, a metal container, a power conductor contained in the metal container filled with an insulating gas, In the apparatus for judging a failure of a gas-insulated electric device having a plurality of insulating spacers that insulate the power-carrying conductor from the metal container and partition the inside of the metal container as a gas section, the gas pressure of the gas section is detected. A gas pressure detector, a first failure determination circuit that determines an accident-occurring gas classification when an output of the gas pressure detector exceeds a first threshold value, and a decomposition gas detector that detects decomposition gas in the gas classification. A second failure determination circuit that determines an accident-occurring gas classification when an output of the decomposed gas detector exceeds a second threshold value, and the second failure determination circuit based on determination outputs of the first and second failure determination circuits. Exceeds threshold of 1 When a decomposition gas exceeding the second threshold is generated in the gas section in which the pressure increase has occurred, an operation control circuit that determines that a failure has occurred in the gas section of the metal container, Since each of the detectors is arranged in the same gas piping system derived from the gas section, the accuracy of determination can be improved by combining different types of sensors, and gas is sampled from the same gas piping system.
The reliability of the determination result is improved, the number of gas supply / exhaust ports and gas supply / exhaust valves is reduced, processing costs and parts costs are reduced, and the occupied space can be reduced.

【0046】また、各検出器は、ガス区分から導出した
同一ガス配管を分岐したガス配管にそれぞれ配置したの
で、上記と同様な作用効果を奏する。
In addition, since each detector is arranged on the branched gas pipe, the same gas pipe derived from the gas section has the same operation and effect as described above.

【0047】また、同一のガス配管から分岐したガス配
管を内部に有する絶縁物製の検出器装着ブロック、この
装着ブロックの分岐ガス配管にそれぞれ装着したガス圧
力検出器と分解ガス検出器、これらの各検出器を被い、
前記ブロックに固定したケースを備えたので、より一層
コンパクト化でき、取付け取外しも容易である。
Further, a detector mounting block made of an insulator having therein a gas pipe branched from the same gas pipe, a gas pressure detector and a decomposition gas detector respectively mounted on the branch gas pipe of the mounting block, Cover each detector,
Since the case fixed to the block is provided, the size can be further reduced, and attachment and detachment are easy.

【0048】また、同一のガス配管から分岐したガス配
管を内部に有するブロック、このブロックの前記分岐ガ
ス配管にそれぞれ装着したガス圧力検出器と分解ガス検
出器、これらの各検出器を被い、前記ブロックに固定し
たケースを備えたので、より一層コンパクト化すること
ができ、取付け取外しも容易である。
Further, a block having therein a gas pipe branched from the same gas pipe, a gas pressure detector and a decomposition gas detector attached to the branch gas pipe of the block, respectively, and covering these detectors, Since the case fixed to the block is provided, the size can be further reduced, and attachment and detachment are easy.

【0049】また、ガス区分の絶縁ガスの温度を検出す
る温度検出器を分解ガス検出器に組み込んだので、より
一層コンパクト化することができ、取付け取外しも容易
である。
Further, since the temperature detector for detecting the temperature of the insulating gas in the gas section is incorporated in the decomposition gas detector, the size can be further reduced and the mounting and dismounting can be easily performed.

【0050】さらに、この発明のガス絶縁電気機器用監
視装置によれば、同一のガス配管から分岐したガス配管
を内部に有する絶縁物製の検出器装着ブロック、この装
着ブロックの分岐ガス配管のガスに検出部を晒して前記
分岐ガス配管にそれぞれ装着したガス圧力検出器と分解
ガス検出器、前記分岐ガス配管に連通した配管に設け内
部ガスを放出し得る開閉バルブ、前記各検出器を被い、
前記ブロックに固定したケースを備えたので、異種セン
サの組み合わせにより監視の確度が向上できると共に、
同一ガス配管系よりガスを採取する形式のため、監視結
果の信頼性が向上し、ガス給排気口やガス給排気バルブ
が少なく、加工コスト及び部品コストの低減が期待で
き、さらにコンパクト化できるため、占有スペースを抑
えることができ、取付け取外し持ち運びも容易である。
Further, according to the monitoring apparatus for a gas-insulated electric device of the present invention, a detector mounting block made of an insulator having therein a gas pipe branched from the same gas pipe, the gas in the branch gas pipe of the mounting block is provided. A gas pressure detector and a decomposition gas detector respectively mounted on the branch gas pipe by exposing a detection unit to the branch gas pipe; an opening / closing valve provided on a pipe communicating with the branch gas pipe and capable of discharging internal gas; and covering each of the detectors. ,
With the case fixed to the block, the accuracy of monitoring can be improved by combining different types of sensors,
Because the gas is sampled from the same gas piping system, the reliability of monitoring results is improved, the number of gas supply / exhaust ports and gas supply / exhaust valves is small, processing costs and parts costs can be reduced, and compactness can be achieved. In addition, the space occupied can be reduced, and it is easy to mount, remove and carry.

【図面の簡単な説明】[Brief description of the drawings]

【図1】 この発明に係るガス絶縁電気機器の故障判定
装置の基礎技術を示す構成図である。
FIG. 1 is a configuration diagram showing a basic technology of a failure determination device for a gas-insulated electrical device according to the present invention.

【図2】 高速現象用センサと低速現象用センサの地絡
発生後の出力信号の時間変化を示す波形図である。
FIG. 2 is a waveform diagram showing a time change of an output signal of a high-speed phenomenon sensor and a low-speed phenomenon sensor after a ground fault occurs.

【図3】 この発明に係るガス絶縁電気機器の故障判定
装置の基礎技術を示す他の構成図である。
FIG. 3 is another configuration diagram showing the basic technology of the failure determination device for a gas-insulated electric device according to the present invention.

【図4】 この発明の実施の形態1に係るガス絶縁電気
機器の故障判定装置における検出器の取付け配置を示す
構成図である。
FIG. 4 is a configuration diagram showing a mounting arrangement of detectors in the failure determination device for a gas-insulated electric device according to Embodiment 1 of the present invention.

【図5】 この発明の実施の形態2に係るガス絶縁電気
機器の故障判定装置における検出器の取付け配置を示す
構成図である。
FIG. 5 is a configuration diagram showing a mounting arrangement of detectors in a failure determination device for a gas-insulated electric device according to Embodiment 2 of the present invention.

【図6】 この発明の実施の形態3に係るガス絶縁電気
機器の故障判定装置における検出器の取付け配置を示す
構成図である。
FIG. 6 is a configuration diagram showing a mounting arrangement of detectors in a failure determination device for a gas-insulated electric device according to Embodiment 3 of the present invention.

【図7】 この発明の実施の形態4に係るガス絶縁電気
機器の故障判定装置における検出器の取付け配置を示す
構成図である。
FIG. 7 is a configuration diagram showing a mounting arrangement of detectors in a failure determination device for a gas-insulated electric device according to Embodiment 4 of the present invention.

【図8】 この発明の実施の形態5に係るガス絶縁電気
機器の故障判定装置における検出器の取付け配置を示す
構成図である。
FIG. 8 is a configuration diagram showing a mounting arrangement of detectors in a failure determination device for a gas-insulated electric device according to Embodiment 5 of the present invention.

【図9】 この発明の実施の形態6に係るガス絶縁電気
機器の故障判定装置における検出器の取付け配置を示す
構成図である。
FIG. 9 is a configuration diagram showing a mounting arrangement of detectors in a failure determination device for a gas-insulated electric device according to Embodiment 6 of the present invention.

【図10】 従来のガス絶縁電気機器の故障判定装置を
示す構成図である。
FIG. 10 is a configuration diagram illustrating a conventional failure determination device for a gas-insulated electric device.

【図11】 従来のガス絶縁電気機器の故障判定装置の
ガス圧力検出器で検出したガス圧信号を示す波形図であ
る。
FIG. 11 is a waveform diagram showing a gas pressure signal detected by a gas pressure detector of a conventional failure determination device for gas-insulated electrical equipment.

【符号の説明】[Explanation of symbols]

1 金属容器 2 課電導体 3 絶縁スペーサ 4 連通配管 5 ガス給排気口 6 ガス配管 7 給排気バルブ 8 分岐ガス配
管 9 絶縁物 11 ガス圧力検
出器 21 分解ガス検出器 41 温度検出
器 42 絶縁性検出器装着ブロック 43 検出部 44 空間 45 ケース 46 ガス開閉バルブ 47 ガス絶縁
電気機器用監視装置 48 金属製検出器装着ブロック 49 絶縁物 50 絶縁物 51 温度・ 分
解ガス検出器 52 絶縁性検出器装着ブロック。
DESCRIPTION OF SYMBOLS 1 Metal container 2 Electric conductor 3 Insulation spacer 4 Communication pipe 5 Gas supply / exhaust port 6 Gas pipe 7 Supply / exhaust valve 8 Branch gas pipe 9 Insulator 11 Gas pressure detector 21 Decomposition gas detector 41 Temperature detector 42 Insulation detection Sensor mounting block 43 Detector 44 Space 45 Case 46 Gas on / off valve 47 Monitoring device for gas-insulated electrical equipment 48 Metal detector mounting block 49 Insulator 50 Insulator 51 Temperature / decomposed gas detector 52 Insulating detector mounting block.

───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 FI テーマコート゛(参考) H01H 33/56 H02G 5/06 391 5G365 H02B 13/055 H02B 13/06 N 13/065 K H02G 5/06 391 G (72)発明者 梶田 直幸 東京都千代田区丸の内二丁目2番3号 三 菱電機株式会社内 (72)発明者 前田 恭宏 東京都千代田区丸の内二丁目2番3号 三 菱電機株式会社内 (72)発明者 本田 義勝 東京都千代田区丸の内二丁目2番3号 三 菱電機株式会社内 Fターム(参考) 2G015 AA09 BA04 CA01 2G033 AA00 AB01 AC02 AC04 AD00 AD21 AD30 AG11 AG12 2G060 AA02 AE40 HC07 HC10 HD07 5G017 DD01 DD12 EE03 EE04 5G028 GG18 GG19 GG21 5G365 DA13 DN04 DN05 ──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. 7 Identification code FI Theme coat ゛ (Reference) H01H 33/56 H02G 5/06 391 5G365 H02B 13/055 H02B 13/06 N 13/065 K H02G 5/06 391 G (72) Inventor Naoyuki Kajita 2-3-2 Marunouchi, Chiyoda-ku, Tokyo, Japan Mitsui Electric Corporation (72) Inventor Yasuhiro Maeda 2-3-2, Marunouchi, Chiyoda-ku, Tokyo Mitsubishi Electric Corporation (72) Inventor Yoshikatsu Honda 2-3-3 Marunouchi, Chiyoda-ku, Tokyo F-term in Mitsubishi Electric Corporation (reference) 2G015 AA09 BA04 CA01 2G033 AA00 AB01 AC02 AC04 AD00 AD21 AD30 AG11 AG12 2G060 AA02 AE40 HC07 HC10 HD07 5G017 DD01 DD12 EE03 EE04 5G028 GG18 GG19 GG21 5G365 DA13 DN04 DN05

Claims (6)

【特許請求の範囲】[Claims] 【請求項1】 金属容器と、絶縁ガスが満たされた前記
金属容器の内部に納められた課電導体と、この課電導体
を前記金属容器から絶縁支持し前記金属容器の内部をガ
ス区分として仕切る複数の絶縁スペーサとを有するガス
絶縁電気機器の故障判定を行うものにおいて、前記ガス
区分のガス圧を検出するガス圧力検出器と、このガス圧
力検出器の出力が第1の閾値を超えると事故発生ガス区
分と判定する第1の故障判定回路と、前記ガス区分の分
解ガスを検出する分解ガス検出器と、この分解ガス検出
器の出力が第2の閾値を超えると事故発生ガス区分と判
定する第2の故障判定回路と、前記第1及び第2の故障
判定回路の判定出力に基いて、前記第1の閾値を超えた
圧力上昇が発生した前記ガス区分内に前記第2の閾値を
超えた分解ガスが発生しているときには、前記金属容器
の当該ガス区分に故障の発生ありと判定する演算制御回
路とを備え、前記各検出器は、前記ガス区分から導出し
た同一ガス配管系に配置したガス絶縁電気機器の故障判
定装置。
1. A metal container, a power conductor accommodated in the metal container filled with an insulating gas, and an insulated support of the power conductor from the metal container. In the failure determination of a gas-insulated electrical device having a plurality of insulating spacers for partitioning, a gas pressure detector for detecting a gas pressure of the gas section, and an output of the gas pressure detector exceeding a first threshold. A first failure determination circuit for determining an accident-occurring gas category, a cracked gas detector for detecting a cracked gas in the gas section, and an accident-causing gas category when an output of the cracked gas detector exceeds a second threshold. A second failure determination circuit to be determined, and the second threshold value within the gas section in which a pressure increase exceeding the first threshold value has occurred based on the determination outputs of the first and second failure determination circuits. Decomposed gas exceeding And an arithmetic and control circuit for determining that a failure has occurred in the gas section of the metal container when the gas is generated, wherein each of the detectors is a gas-insulated electric pipe arranged in the same gas piping system derived from the gas section. Equipment failure judgment device.
【請求項2】 各検出器は、ガス区分から導出した同一
ガス配管を分岐したガス配管にそれぞれ配置した請求項
1記載のガス絶縁電気機器の故障判定装置。
2. The failure judging device for a gas-insulated electric device according to claim 1, wherein each of the detectors is arranged on a branched gas pipe of the same gas pipe derived from the gas section.
【請求項3】 同一のガス配管から分岐したガス配管を
内部に有する絶縁物製の検出器装着ブロック、この装着
ブロックの分岐ガス配管にそれぞれ装着したガス圧力検
出器と分解ガス検出器、これらの各検出器を被い、前記
ブロックに固定したケースを備えた請求項2記載のガス
絶縁電気機器の故障判定装置。
3. A detector mounting block made of an insulator having therein a gas pipe branched from the same gas pipe, a gas pressure detector and a decomposition gas detector respectively mounted on the branch gas pipe of the mounting block. 3. The failure judging device for a gas-insulated electric device according to claim 2, further comprising a case that covers each of the detectors and is fixed to the block.
【請求項4】 同一のガス配管から分岐したガス配管を
内部に有するブロック、このブロックの前記分岐ガス配
管にそれぞれ装着したガス圧力検出器と分解ガス検出
器、これらの各検出器を被い、前記ブロックに固定した
ケースを備えた請求項2記載のガス絶縁電気機器の故障
判定装置。
4. A block having therein a gas pipe branched from the same gas pipe, a gas pressure detector and a decomposition gas detector respectively mounted on the branch gas pipe of the block, and covering these detectors, 3. The failure judging device for a gas-insulated electric device according to claim 2, further comprising a case fixed to said block.
【請求項5】 ガス区分の絶縁ガスの温度を検出する温
度検出器を分解ガス検出器に組み込んだ請求項2記載の
ガス絶縁電気機器の故障判定装置。
5. The failure judging device for a gas-insulated electric device according to claim 2, wherein a temperature detector for detecting a temperature of the insulating gas in the gas section is incorporated in the decomposition gas detector.
【請求項6】 同一のガス配管から分岐したガス配管を
内部に有する絶縁物製の検出器装着ブロック、この装着
ブロックの分岐ガス配管のガスに検出部を晒して前記分
岐ガス配管にそれぞれ装着したガス圧力検出器と分解ガ
ス検出器、前記分岐ガス配管に連通した配管に設け内部
ガスを放出し得る開閉バルブ、前記各検出器を被い、前
記ブロックに固定したケースを備えたガス絶縁電気機器
用監視装置。
6. A detector mounting block made of an insulator having therein a gas pipe branched from the same gas pipe, and a detector is exposed to gas in a branch gas pipe of the mounting block and mounted on the branch gas pipe. A gas insulated electric device comprising a gas pressure detector and a decomposition gas detector, an open / close valve provided in a pipe communicating with the branch gas pipe and capable of discharging internal gas, a case covering each of the detectors and fixed to the block. Monitoring device.
JP2000204814A 2000-02-28 2000-07-06 Failure determination device for gas insulated electrical equipment and monitoring device for gas insulated electrical equipment Expired - Fee Related JP4157257B2 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
JP2000204814A JP4157257B2 (en) 2000-07-06 2000-07-06 Failure determination device for gas insulated electrical equipment and monitoring device for gas insulated electrical equipment
SG200007207A SG111012A1 (en) 2000-02-28 2000-12-07 Failure determining apparatus of gas-insulated electrical appliance
US09/756,216 US6661234B2 (en) 2000-02-28 2001-01-09 Failure determining apparatus of gas-insulated electrical appliance
EP01300245A EP1132746B8 (en) 2000-02-28 2001-01-12 Failure determining apparatus of gas insulated electrical appliance
CNB011045477A CN1171091C (en) 2000-02-28 2001-02-12 Device for detecting fault of gas insulation electric appliance
HK01108355A HK1037724A1 (en) 2000-02-28 2001-11-28 Failure determining apparatus of gas-insulated electrical appliance.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2000204814A JP4157257B2 (en) 2000-07-06 2000-07-06 Failure determination device for gas insulated electrical equipment and monitoring device for gas insulated electrical equipment

Publications (2)

Publication Number Publication Date
JP2002027623A true JP2002027623A (en) 2002-01-25
JP4157257B2 JP4157257B2 (en) 2008-10-01

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ID=18702012

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Country Link
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* Cited by examiner, † Cited by third party
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JP2006254614A (en) * 2005-03-11 2006-09-21 Central Res Inst Of Electric Power Ind Gas-insulated power apparatus and its abnormality detecting method
JP2007185011A (en) * 2006-01-05 2007-07-19 Hitachi Ltd Fault point locator and locating method of gas insulated switchgear
JP2008067538A (en) * 2006-09-08 2008-03-21 Central Res Inst Of Electric Power Ind Method for detecting abnormality in gas insulated power apparatus
JP2008067537A (en) * 2006-09-08 2008-03-21 Central Res Inst Of Electric Power Ind Gas insulated power device
KR101310280B1 (en) * 2013-05-07 2013-09-24 대흥전력기술 주식회사 Method for checking and changing insulating gas of load break switch
JP2015158455A (en) * 2014-02-25 2015-09-03 三菱電機株式会社 Damage detector, damage detection system, and damage detection method
JP2016152648A (en) * 2015-02-16 2016-08-22 東京電力ホールディングス株式会社 Gas-insulated switchgear and gas replacement method thereof
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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006254614A (en) * 2005-03-11 2006-09-21 Central Res Inst Of Electric Power Ind Gas-insulated power apparatus and its abnormality detecting method
JP4596531B2 (en) * 2005-03-11 2010-12-08 財団法人電力中央研究所 Gas insulated power equipment and abnormality detection method thereof
JP2007185011A (en) * 2006-01-05 2007-07-19 Hitachi Ltd Fault point locator and locating method of gas insulated switchgear
JP4641262B2 (en) * 2006-01-05 2011-03-02 株式会社日立製作所 Fault location device and method for gas insulated switchgear
JP2008067538A (en) * 2006-09-08 2008-03-21 Central Res Inst Of Electric Power Ind Method for detecting abnormality in gas insulated power apparatus
JP2008067537A (en) * 2006-09-08 2008-03-21 Central Res Inst Of Electric Power Ind Gas insulated power device
KR101310280B1 (en) * 2013-05-07 2013-09-24 대흥전력기술 주식회사 Method for checking and changing insulating gas of load break switch
JP2015158455A (en) * 2014-02-25 2015-09-03 三菱電機株式会社 Damage detector, damage detection system, and damage detection method
JP2016152648A (en) * 2015-02-16 2016-08-22 東京電力ホールディングス株式会社 Gas-insulated switchgear and gas replacement method thereof
KR20230012768A (en) * 2021-07-16 2023-01-26 목포해양대학교 산학협력단 System for managing sensor using double piping
KR102597976B1 (en) * 2021-07-16 2023-11-02 목포해양대학교 산학협력단 System for managing sensor using double piping

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