JP4682046B2 - Switchgear - Google Patents

Switchgear Download PDF

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JP4682046B2
JP4682046B2 JP2006017719A JP2006017719A JP4682046B2 JP 4682046 B2 JP4682046 B2 JP 4682046B2 JP 2006017719 A JP2006017719 A JP 2006017719A JP 2006017719 A JP2006017719 A JP 2006017719A JP 4682046 B2 JP4682046 B2 JP 4682046B2
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circuit
electromagnetic
monitoring
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driving
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JP2007202298A (en
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知孝 矢野
正博 有岡
敏恵 竹内
昭彦 丸山
靖 竹内
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Mitsubishi Electric Corp
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  • Gas-Insulated Switchgears (AREA)
  • High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)

Description

この発明は、電力の送配電および受電設備などに用いられる、電磁操作方式遮断器または電磁操作方式遮断器を搭載したスイッチギヤなどの開閉装置に関するものである。   The present invention relates to an electromagnetic operation type circuit breaker or a switchgear such as a switch gear equipped with an electromagnetic operation type circuit breaker used for power transmission / distribution and power receiving facilities.

従来の主回路状態検出機能を備えたスイッチギヤとして、例えば、特開２０００−２６１９２１号公報（以下、特許文献１と称す。）に示されるものがある。
この特許文献１に示されるものは、検電端子の位置を操作装置の近傍または内部とし、検電の操作性を向上させると同時に、当該検電端子の特定も容易に行えるようにするものであって、概略以下のように構成されている。
すなわち、絶縁スペーサによって区画されるとともに、少なくとも線路作業用接地開閉器操作装置および母線作業用接地開閉器操作装置を備えたガス絶縁開閉装置の検電装置において、絶縁スペーサの内部に内部電極が埋設されるとともに、外周表面上に電気的に浮いた状態で端子を設け、線路作業用接地開閉器操作装置および母線作業用接地開閉器操作装置の近傍または内部に、増幅器の測定端子部が取り付けられる検電端子を設け、端子と検電端子とを接続線２５、２６によって接続するよう構成されている。 An example of a conventional switchgear having a main circuit state detection function is disclosed in Japanese Patent Application Laid-Open No. 2000-261721 (hereinafter referred to as Patent Document 1).
In this patent document 1, the position of the voltage detection terminal is set in the vicinity of or inside the operation device so as to improve the operability of voltage detection and at the same time specify the voltage detection terminal easily. In general, it is configured as follows.
That is, in the voltage detection device of the gas insulated switchgear that is partitioned by the insulating spacer and includes at least the line working ground switch operating device and the bus bar working ground switch operating device, the internal electrode is embedded in the insulating spacer. In addition, a terminal is provided in an electrically floating state on the outer peripheral surface, and a measuring terminal portion of the amplifier is attached in the vicinity or inside of the track work ground switch operating device and the bus bar work ground switch operating device. A voltage detection terminal is provided, and the terminal and the voltage detection terminal are connected by connection lines 25 and 26.

特開２０００−２６１９２１号公報（図1）Japanese Unexamined Patent Publication No. 2000-261721 (FIG. 1)

しかしながら、従来の電磁操作方式遮断器または電磁操作方式遮断器を搭載したスイッチギヤなどの開閉装置においては、上記特許文献１に示されるように、主回路状態検出機能は備えていても、機構部を含めた機器の状態を確認する為には、定期的に保守員により点検を行なうことが必要で、保守点検作業に多大の労力を必要とするとともに、点検内容によっては主回路の停止を伴うために、定期的に停電を行なうことが必要となるなどの課題を有するものであった。   However, in a conventional switching device such as a switchgear equipped with an electromagnetic operation type circuit breaker or an electromagnetic operation type circuit breaker, as shown in the above-mentioned Patent Document 1, even if the main circuit state detection function is provided, the mechanism unit In order to check the condition of the equipment, including maintenance, it is necessary to inspect regularly by maintenance personnel, requiring a lot of labor for maintenance inspection work, and depending on the inspection contents, the main circuit may be stopped For this reason, there is a problem that it is necessary to periodically perform a power failure.

この発明は、上記のような問題点を解消するためになされたもので、電磁操作方式遮断器または電磁操作方式遮断器を搭載したスイッチギヤなどの開閉装置において、保守点検周期の延長および保守員による点検保守項目の削減を可能にして、保守点検の省力化を可能とした開閉装置を提供することを目的とする。   The present invention has been made in order to solve the above-described problems. In an electromagnetically operated circuit breaker or a switchgear such as a switchgear equipped with an electromagnetically operated circuit breaker, an extension of a maintenance inspection cycle and a maintenance staff are provided. It is an object of the present invention to provide a switchgear that can reduce the number of inspection and maintenance items by reducing the maintenance and labor.

また、この発明は、電力供給を停止することなく、主回路の運転を継続した状態で、開閉装置各部の異常の有無を検知することができ、故障、事故を未然に防止することができる開閉装置を提供することを目的とする。   In addition, the present invention can detect the presence / absence of abnormality of each part of the switchgear while maintaining the operation of the main circuit without stopping the power supply, and can prevent failure and accident in advance. An object is to provide an apparatus.

この発明に係る開閉装置は、電磁操作方式遮断器または電磁操作方式遮断器を搭載したスイッチギヤ等の開閉装置において、
遮断器の電磁操作機構の駆動コイルへ駆動電流を供給する駆動用コンデンサ、
上記駆動用コンデンサの端子間電圧を測定するコンデンサ電圧センサと、上記電磁操作機構の駆動コイルへの駆動電流を測定する駆動電流センサと、上記駆動コイルの抵抗値を測定するコイル抵抗センサとを具備し、指令に基づいて上記駆動用コンデンサの充放電を制御する電磁操作機構制御回路部、
上記電磁操作機構の固定子内に配設された磁束センサ、
上記電磁操作機構制御回路部の各センサおよび上記磁束センサの出力が入力され、これら各センサからの入力情報を演算処理して、上記遮断器の駆動状態を監視する駆動監視回路部と、上記電磁操作機構内の磁束密度を監視する磁束監視回路部とを具備する状態監視装置を備え、上記状態監視装置の駆動監視回路部は、上記コンデンサ電圧センサおよび駆動電流センサからの入力に基づくコンデンサ電圧および駆動電流波形から、上記遮断器の電磁操作機構、主回路接点可動部および主回路接点部の内、いずれか1ヶ所または２ヶ所以上の摩擦の変化、主回路接点損耗量の変化、動作速度の変化を検出することによって上記遮断器の駆動状態を監視し、上記磁束監視回路部は、上記磁束センサからの入力に基づく磁束密度から上記電磁操作機構の開閉極保持状態を監視するようにしたものである。 The switchgear according to the present invention is an switchgear such as a switchgear equipped with an electromagnetically operated circuit breaker or an electromagnetically operated circuit breaker,
A drive capacitor for supplying a drive current to the drive coil of the electromagnetic operating mechanism of the circuit breaker
A capacitor voltage sensor for measuring a voltage between terminals of the driving capacitor; a driving current sensor for measuring a driving current to the driving coil of the electromagnetic operation mechanism; and a coil resistance sensor for measuring a resistance value of the driving coil. And an electromagnetic operation mechanism control circuit unit for controlling charging / discharging of the driving capacitor based on a command,
A magnetic flux sensor disposed in a stator of the electromagnetic operating mechanism,
The electromagnetic output of each sensor and the magnetic flux sensor of the operation mechanism control circuit unit is input, these input information from the sensors to the arithmetic processing, and the drive monitoring circuit for monitoring the driving state of the breaker, the electromagnetic includes a state monitoring device for and a flux monitor circuit for monitoring the magnetic flux density in the operating mechanism, drive monitoring circuit portion of the state monitoring device, the capacitor voltage based on the input from the capacitor voltage sensor and the drive current sensors and From the drive current waveform, change in friction at one or more of the electromagnetic operating mechanism of the above circuit breaker , main circuit contact movable part and main circuit contact part, change in main circuit contact wear, operating speed By detecting the change , the driving state of the circuit breaker is monitored, and the magnetic flux monitoring circuit unit detects the electromagnetic operation mechanism from the magnetic flux density based on the input from the magnetic flux sensor. The switching pole holding state is monitored .

また、この発明は、上記状態監視装置に、主回路から絶縁して配置したアンテナ部によって検出した電圧または電磁波から主回路部での部分放電発生の有無を検知する部分放電検出回路部を備えたものである。   The present invention also includes a partial discharge detection circuit unit that detects whether or not partial discharge has occurred in the main circuit unit from the voltage or electromagnetic wave detected by the antenna unit that is insulated from the main circuit. Is.

また、この発明は、上記状態監視装置に、電磁操作方式遮断器に接続した電動操作方式断路器および電動操作方式接地開閉器の駆動用モータの通電電流または通電時間の何れか１つまたは両方を監視する電動操作監視回路部を備えたものである。   Further, according to the present invention, either one or both of the energizing current and the energizing time of the driving motor of the electric operation type disconnector and the electric operation type ground switch connected to the electromagnetic operation type circuit breaker are added to the state monitoring device. An electric operation monitoring circuit unit for monitoring is provided.

この発明の開閉装置によれば、保守点検周期の延長および保守員による点検保守項目の削減をすることができ、保守点検の省力化を可能とすることができる。   According to the switchgear of the present invention, the maintenance inspection cycle can be extended and the number of inspection and maintenance items by maintenance personnel can be reduced, thereby making it possible to save labor in maintenance inspection.

また、この発明によれば、電力供給を停止することなく、主回路の運転を継続した状態で、開閉装置各部の異常の有無を検知することができ、保守の省力化に加えて、故障、事故を未然に防止することができる開閉装置を得る事ができる。   Further, according to the present invention, it is possible to detect the presence / absence of an abnormality in each part of the switchgear in a state in which the operation of the main circuit is continued without stopping the power supply, in addition to labor saving of maintenance, It is possible to obtain a switchgear that can prevent an accident.

実施の形態１．
以下、この発明の実施の形態１の開閉装置（ガス絶縁スイッチギヤ）について図面を参照して説明する。
図１は、実施の形態１による電磁操作方式遮断器の構成を示す概略ブロック構成図である。
図１において、電磁操作機構１００の駆動コイルへの駆動電流Ｉｄは、駆動用コンデンサ３００の放電によって供給され、駆動用コンデンサ３００は、外部電源から電磁操作機構制御回路２００を介して充電され、また外部からの動作指令によって、電磁操作機構制御回路２００を介して放電するように構成されている。
電磁操作機構制御回路２００には、駆動用コンデンサ３００の端子間電圧を測定するコンデンサ電圧センサ２０１と、電磁操作機構１００の駆動コイルへの駆動電流を測定する駆動電流センサ２０２、および、電磁操作機構内の駆動コイルの抵抗値を測定するコイル抵抗センサ２０３を搭載している。また、電磁操作機構１００の固定子内には、電磁操作機構１００内の磁束密度を測定する磁束センサ１０１を埋設している。 Embodiment 1 FIG.
Hereinafter, a switchgear (gas-insulated switchgear) according to Embodiment 1 of the present invention will be described with reference to the drawings.
FIG. 1 is a schematic block diagram showing the configuration of the electromagnetically operated circuit breaker according to the first embodiment.
In FIG. 1, the drive current Id to the drive coil of the electromagnetic operation mechanism 100 is supplied by the discharge of the drive capacitor 300, and the drive capacitor 300 is charged from the external power source via the electromagnetic operation mechanism control circuit 200. It is configured to discharge via the electromagnetic operation mechanism control circuit 200 in accordance with an operation command from the outside.
The electromagnetic operating mechanism control circuit 200 includes a capacitor voltage sensor 201 that measures a voltage across the terminals of the driving capacitor 300, a driving current sensor 202 that measures a driving current to the driving coil of the electromagnetic operating mechanism 100, and an electromagnetic operating mechanism. A coil resistance sensor 203 for measuring the resistance value of the drive coil is mounted. A magnetic flux sensor 101 that measures the magnetic flux density in the electromagnetic operation mechanism 100 is embedded in the stator of the electromagnetic operation mechanism 100.

コンデンサ電圧センサ２０１、駆動電流センサ２０２、コイル抵抗センサ２０３、および磁束センサ１０１の各出力は、状態監視装置４００に接続されている。
状態監視装置４００には、上記各センサからの入力情報を演算処理し、遮断器の駆動状態を監視する駆動監視回路部と、電磁操作機構１００内の磁束密度を監視する磁束監視回路部が設けられている。すなわち、駆動監視回路部は、コンデンサ電圧および駆動電流波形から、遮断器の電磁操作機構、主回路接点可動部および主回路接点部での摩擦の変化、主回路接点損耗量の変化、動作速度の変化などの遮断器の状態を監視し、磁束監視回路部は、磁束密度から電磁操作機構１００内の開閉極状態保持の状態を監視している。
上記状態監視において、摩擦、主回路接点損耗量、開閉極状態保持状態の変化量または絶対値が閾値を越えた場合には、状態監視装置４００本体に警報異常を表示すると共に、外部へ状態異常警報を出力するようなされている。 The outputs of the capacitor voltage sensor 201, the drive current sensor 202, the coil resistance sensor 203, and the magnetic flux sensor 101 are connected to the state monitoring device 400.
The state monitoring device 400 is provided with a drive monitoring circuit unit that performs arithmetic processing on the input information from each sensor and monitors the driving state of the circuit breaker, and a magnetic flux monitoring circuit unit that monitors the magnetic flux density in the electromagnetic operation mechanism 100. It has been. That is, the drive monitoring circuit unit determines, based on the capacitor voltage and the drive current waveform, the electromagnetic operation mechanism of the circuit breaker, the friction change in the main circuit contact movable part and the main circuit contact part, the change in the main circuit contact wear amount, the operation speed The state of the circuit breaker such as a change is monitored, and the magnetic flux monitoring circuit unit monitors the state of maintaining the switching pole state in the electromagnetic operation mechanism 100 from the magnetic flux density.
In the above state monitoring, when the friction, main circuit contact wear amount, change amount of the switching pole state holding state or absolute value exceeds the threshold value, an alarm abnormality is displayed on the state monitoring device 400 main body and the state abnormality is externally indicated. An alarm is output.

また、遮断器が動作していない間に生じる駆動用コンデンサ３００の自然放電等による端子間電圧の低下に対し、電磁操作機構制御回路２００では、駆動用コンデンサ３００の端子間電圧が一定の閾値を下回った場合に、駆動用コンデンサの補充電を行ない、駆動用コンデンサ３００の端子間電圧が一定の範囲内になるよう制御している。
状態監視装置４００には、静電容量監視回路４０１が設けられており、この静電容量監視回路４０１は、遮断器が動作していない間に生じる駆動用コンデンサ３００の端子間電圧の低下について、電磁操作機構制御回路２００のコンデンサ電圧センサ２０１からの入力を基に、一定時間毎の駆動用コンデンサ３００の端子間電圧を測定することによって駆動用コンデンサの静電容量を監視している。 Further, in response to a decrease in the voltage between terminals due to natural discharge or the like of the driving capacitor 300 that occurs while the circuit breaker is not operating, in the electromagnetic operating mechanism control circuit 200, the voltage between the terminals of the driving capacitor 300 has a certain threshold value. When the voltage falls below, supplemental charging of the driving capacitor is performed, and the voltage between the terminals of the driving capacitor 300 is controlled to be within a certain range.
The state monitoring device 400 is provided with a capacitance monitoring circuit 401. The capacitance monitoring circuit 401 is configured to reduce the voltage between terminals of the driving capacitor 300 that occurs while the circuit breaker is not operating. Based on the input from the capacitor voltage sensor 201 of the electromagnetic operating mechanism control circuit 200, the capacitance of the driving capacitor is monitored by measuring the voltage across the terminals of the driving capacitor 300 at regular intervals.

一方、経年劣化および過通電等によって発生する可能性が有る駆動用コイルの絶縁劣化、断線などについては、遮断器が動作していない間に、電磁操作機構制御回路２００から開閉極保持状態および開閉極動作特性に影響の無い範囲で微小な電流ΔＩを電磁操作機構内の駆動用コイルへ通電し、電磁操作機構制御回路のコイル抵抗センサ２０３によって通電時の駆動用コイルの抵抗値を測定し、電磁操作機構制御回路のコイル抵抗センサ２０３からの入力を基に、状態監視装置４００に設けられたコイル抵抗監視回路４０２によって駆動用コイル抵抗の変化を監視し駆動用コイルの通電性能および絶縁性能を監視している。   On the other hand, with respect to insulation deterioration, disconnection, etc. of the drive coil that may occur due to aging deterioration, overcurrent, etc., while the circuit breaker is not operating, the electromagnetic operating mechanism control circuit 200 holds the switching pole holding state and switching A small current ΔI is applied to the drive coil in the electromagnetic operation mechanism within a range that does not affect the polar operation characteristics, and the resistance value of the drive coil at the time of energization is measured by the coil resistance sensor 203 of the electromagnetic operation mechanism control circuit. Based on the input from the coil resistance sensor 203 of the electromagnetic operating mechanism control circuit, the coil resistance monitoring circuit 402 provided in the state monitoring device 400 monitors changes in the driving coil resistance, and the energization performance and insulation performance of the driving coil are determined. Monitoring.

また、状態監視装置４００には温度センサ４０３を搭載しており、駆動用コンデンサ３００の静電容量および駆動用コイル抵抗の監視は、静電容量監視回路４０１、コイル抵抗監視回路４０２にて演算処理を行なう際に、温度センサ４０３からの周囲温度を各演算時の補正値として静電容量監視回路４０１、コイル抵抗監視回路４０２に入力している。   The state monitoring device 400 is equipped with a temperature sensor 403, and monitoring of the capacitance of the driving capacitor 300 and the driving coil resistance is performed by the capacitance monitoring circuit 401 and the coil resistance monitoring circuit 402. When performing the above, the ambient temperature from the temperature sensor 403 is input to the capacitance monitoring circuit 401 and the coil resistance monitoring circuit 402 as a correction value at the time of each calculation.

以上のように、この発明の実施の形態１によれば、電磁操作方式遮断器または電磁操作方式遮断器を搭載したスイッチギヤ等の開閉装置において、電磁操作機構制御回路部２００の駆動電流センサ２０２及びコンデンサ電圧センサ２０１からの入力に基づいて、遮断器動作時に電磁操作機構１００内の駆動用コイルへの通電電流波形を分析して、遮断器の電磁操作機構、主回路接点可動部および主回路接点部の内、いずれか1ヶ所または２ヶ所以上の摩擦の変化、主回路接点損耗量の変化、動作速度の変化などの遮断器の状態を検出する駆動監視回路部と、電磁操作機構の固定子内に配設した磁束センサ１０１からの入力によって電磁操作機構１００内の磁束密度を監視する磁束監視回路部からなる状態監視装置４００を備えるよう構成したので、以下のような優れた作用効果を得ることができる。 As described above, according to the first embodiment of the present invention, in the switchgear or other switchgear equipped with the electromagnetic operation type circuit breaker or the electromagnetic operation type circuit breaker, the drive current sensor 202 of the electromagnetic operation mechanism control circuit unit 200 is provided. Based on the input from the capacitor voltage sensor 201 , the current-carrying current waveform to the driving coil in the electromagnetic operation mechanism 100 is analyzed during the operation of the circuit breaker, and the electromagnetic operation mechanism , main circuit contact movable part and main circuit of the circuit breaker are analyzed. A drive monitoring circuit that detects the state of the circuit breaker such as a change in friction at one or more of the contact points, a change in the amount of wear on the main circuit contacts, and a change in operating speed, and fixing of the electromagnetic operating mechanism A state monitoring device 400 including a magnetic flux monitoring circuit unit that monitors the magnetic flux density in the electromagnetic operation mechanism 100 by an input from the magnetic flux sensor 101 disposed in the child is configured. Thus, the following excellent effects can be obtained.

（１）電磁操作方式遮断器の電磁操作機構、主回路接点可動部への塵埃・異物等の付着による摩擦力の変化および、電磁操作機構の固定子と可動子間への塵埃・異物等の付着による固定子内の磁束密度の変化を監視することによって、これまで摩擦力および磁束密度の変化が性能に影響しない範囲であっても実施していた定期的点検保守を、摩擦力および磁束密度の変化が性能に影響を与えない範囲で延長することが可能となる。
また、定期的点検保守以前に何らかの異常が発生した場合に、摩擦力、磁束密度の異常な変化を検知し、適切に清掃・グリスアップなどの保守を行なうことができ、故障、事故を未然に防止することができる。
（２）金属容器・真空管などの密閉容器内に収納されている主回路接点部は、電流開閉によって損耗するが、これまで主回路接点部の損耗量を点検する為には主回路を停止し、機構部の寸法測定または主回路への電圧印加時の漏れ電流測定によって点検を行っていたが、遮断器駆動時の駆動電流によって接点損耗量を監視することによって、遮断器を開閉する毎に接点損耗量の変化を監視でき、点検のために主回路を停止する必要が無い。
(1) Electromagnetic operation mechanism of electromagnetic circuit breaker, change of frictional force due to dust / foreign matter adhering to the moving part of main circuit contact , and dust / foreign matter between stator and mover of electromagnetic operation mechanism By monitoring changes in the magnetic flux density in the stator due to adhesion, periodic inspection and maintenance that has been performed even in the range where changes in the frictional force and magnetic flux density do not affect performance can be performed. It is possible to extend within a range in which the change of does not affect the performance.
In addition, if any abnormality occurs before periodic inspection and maintenance, abnormal changes in the frictional force and magnetic flux density can be detected, and maintenance such as cleaning and grease can be performed appropriately. Can be prevented.
(2) The main circuit contact part housed in a sealed container such as a metal container or vacuum tube is worn by current switching, but until now the main circuit has been stopped to check the wear amount of the main circuit contact part. Inspected by measuring the dimensions of the mechanism section or measuring leakage current when applying voltage to the main circuit. Every time the circuit breaker is opened or closed by monitoring the amount of contact wear by the drive current when the circuit breaker is driven. Changes in the amount of contact wear can be monitored, and there is no need to stop the main circuit for inspection.

（３）電磁操作方式遮断器の駆動用電源として駆動用コンデンサを搭載する場合、駆動用コンデンサの静電容量を監視することで、動作時の駆動エネルギー不足による不動作を未然に検知し、駆動用コンデンサ取替えなどの保守を行なうことによって、不動作の防止が可能となる。
（４）また、駆動用コイルの状態は、これまで定期的点検保守時にコイル抵抗測定によって点検保守を行なっていたが、開閉極保持状態および開閉極動作特性に影響の無い範囲で微小な電流を電磁操作機構内の駆動用コイルへ通電し、駆動用コイルの導電抵抗および接続状態を監視することによって、何らかの原因によって駆動用コイルの抵抗増大または断線が発生した場合に、これを検知し保守を行なうことによって、動作異常を未然に防止することが可能である。 (3) When a driving capacitor is mounted as a driving power source for an electromagnetically operated circuit breaker, the non-operation due to a lack of driving energy during operation is detected in advance by monitoring the capacitance of the driving capacitor, and driving It is possible to prevent malfunctions by performing maintenance such as replacement of the capacitor.
(4) In addition, the state of the drive coil has been inspected and maintained by measuring coil resistance during periodic inspection and maintenance until now, but a small current is applied within a range that does not affect the switching pole holding state and switching pole operating characteristics. By energizing the drive coil in the electromagnetic operating mechanism and monitoring the conductive resistance and connection status of the drive coil, if the drive coil resistance increases or breaks for some reason, this is detected and maintained. By doing so, it is possible to prevent abnormal operation.

実施の形態２．
図２は、この発明の実施の形態２の電磁操作方式遮断器の構成を示す概略構成図である。
図２において、主回路１はＳＦ６ガス、乾燥空気、窒素ガス、二酸化炭素ガスなどの絶縁性ガスを封入した金属容器２内に収納されており、遮断器３に接続される主回路１の一部に、主回路１から絶縁してアンテナ部４が設けられている。アンテナ部４からリード線５が、密封端子６などを用いて金属容器２から気密に金属容器外部に引出され、引出し部近傍に配置した変換器７を介して状態監視装置８に接続されている。
また、金属容器２の一部に、気密に圧力センサ９が取り付けられ、圧力センサ９からのリード線１０も状態監視装置８に接続されている。 Embodiment 2. FIG.
2 is a schematic configuration diagram showing a configuration of an electromagnetically operated circuit breaker according to Embodiment 2 of the present invention.
In FIG. 2, the main circuit 1 is housed in a metal container 2 in which an insulating gas such as SF 6 gas, dry air, nitrogen gas, carbon dioxide gas is sealed, and is connected to the circuit breaker 3. The antenna part 4 is provided in the part so as to be insulated from the main circuit 1. A lead wire 5 is drawn from the antenna unit 4 to the outside of the metal container from the metal container 2 using a sealing terminal 6 or the like, and is connected to the state monitoring device 8 via a converter 7 disposed in the vicinity of the drawer part. .
A pressure sensor 9 is attached to a part of the metal container 2 in an airtight manner, and a lead wire 10 from the pressure sensor 9 is also connected to the state monitoring device 8.

状態監視装置８には、実施の形態１の状態監視装置と同様の機能に加えて、部分放電検出回路が設けられており、アンテナ部４で検出した電磁波を変換器７でパルス波に変換した後に状態監視装置８に入力し、一定時間内のパルス数およびパルス波の連続性から部分放電の発生を検出している。   The state monitoring device 8 is provided with a partial discharge detection circuit in addition to the same function as that of the state monitoring device of the first embodiment, and the electromagnetic wave detected by the antenna unit 4 is converted into a pulse wave by the converter 7. Later, it is input to the state monitoring device 8 and the occurrence of partial discharge is detected from the number of pulses within a predetermined time and the continuity of the pulse wave.

また、同様の回路を用いて真空度監視回路が構成されており、真空劣化時に発生する電磁波を検出し、真空度を監視している。 Further, a vacuum level monitoring circuit is configured using a similar circuit, and detects the electromagnetic wave generated at the time of vacuum deterioration and monitors the vacuum level.

また、圧力センサ９にて金属容器２内のガス圧力を測定し、圧力センサ９と接続した状態監視装置８内のガス圧力監視回路にてガス圧力監視を行なっている。
なお、状態監視装置８内には、実施の形態１と同様に温度センサを搭載しており、ガス圧力監視回路にて演算処理を行なう際に、温度センサからの周囲温度を各演算時の補正値としてガス圧力監視回路に入力している。 Further, the gas pressure in the metal container 2 is measured by the pressure sensor 9, and the gas pressure is monitored by the gas pressure monitoring circuit in the state monitoring device 8 connected to the pressure sensor 9.
In addition, a temperature sensor is mounted in the state monitoring device 8 as in the first embodiment, and when the calculation process is performed by the gas pressure monitoring circuit, the ambient temperature from the temperature sensor is corrected at each calculation. The value is input to the gas pressure monitoring circuit.

この発明の実施の形態２の開閉装置は上記のように構成されており、以下の如き優れた作用効果を得ることができる。
（５）主回路の絶縁性能の点検は、これまで回路を停止して絶縁抵抗測定および主回路支持絶縁物表面などの清掃を行っていたが、主回路から絶縁して配置したアンテナ部によって検出した電圧または電磁波から主回路部での部分放電発生の有無を検知する部分放電検出回路を備えたことによって、主回路運転継続状態で主回路の絶縁性能の異常の有無を検知することができ、絶縁性能の異常が検知されない間は、主回路支持絶縁物表面の清掃も必要ないので保守の省力化も可能である。 The switchgear according to Embodiment 2 of the present invention is configured as described above, and can obtain the following excellent effects.
(5) Inspecting the insulation performance of the main circuit has so far been performed by measuring the insulation resistance and cleaning the surface of the main circuit support insulator, etc., with the circuit stopped, but detected by the antenna section placed insulated from the main circuit By providing a partial discharge detection circuit that detects the presence or absence of partial discharge in the main circuit from the voltage or electromagnetic wave that has been made, it is possible to detect the presence or absence of abnormality in the insulation performance of the main circuit in the main circuit operation continuation state, As long as no abnormality in insulation performance is detected, cleaning of the surface of the main circuit support insulator is not necessary, so that maintenance labor can be saved.

（６）真空遮断器の真空スイッチ管内の真空度の低下は消弧性能に大きく影響する。
これまで定期的点検保守時に主回路を停止して真空度の測定を行なっていたが、この発明によれば、主回路の運転を継続した状態で真空度異常の検知が可能であり、真空スイッチ管の消弧性能が不足する前に回路を停止して保守を行い、真空スイッチ管を取替えることができる。 (6) A decrease in the degree of vacuum in the vacuum switch tube of the vacuum circuit breaker greatly affects the arc extinguishing performance.
Until now, the main circuit was stopped during periodic inspection and maintenance, and the degree of vacuum was measured. However, according to the present invention, it is possible to detect an abnormality in the degree of vacuum while the main circuit continues to operate. Before the arc extinguishing performance of the tube is insufficient, the circuit can be stopped and maintenance can be performed, and the vacuum switch tube can be replaced.

（７）ガス絶縁スイッチギヤにおいて、絶縁性ガスの圧力は主回路の絶縁性能への影響が大きい。この絶縁性ガスの圧力は、これまで圧力スイッチ、圧力計などによって監視されていたが、一般的に圧力スイッチ、圧力計よりも高精度な圧力センサを用いて圧力を監視することによって、ガス漏れによるガス圧力低下が発生した場合に、微小に変化するガス圧力を検知し、保守によって絶縁性ガスを補充することで、絶縁性能の著しい低下を招くことなく運転を継続することができる。   (7) In the gas insulated switchgear, the pressure of the insulating gas has a great influence on the insulation performance of the main circuit. Until now, the pressure of this insulating gas has been monitored by a pressure switch, a pressure gauge, etc. Generally, by monitoring the pressure using a pressure sensor that is more accurate than the pressure switch and pressure gauge, When a gas pressure drop due to the above occurs, a gas pressure that slightly changes is detected, and the insulating gas is replenished by maintenance, so that the operation can be continued without causing a significant drop in insulation performance.

（８）コンデンサ容量、導電抵抗、ガス圧力、に関する監視において、温度センサにて測定した周囲温度に基づき監視回路での演算処理時に温度補正を行なうことで、周囲温度の変化の影響を抑え、高精度に監視を行なうことができる。   (8) In monitoring related to capacitor capacity, conductive resistance, gas pressure, etc., by performing temperature correction during calculation processing in the monitoring circuit based on the ambient temperature measured by the temperature sensor, the influence of changes in ambient temperature can be suppressed, and high Monitoring can be performed with high accuracy.

実施の形態３．
図３は、この発明の実施の形態３による開閉装置の概略構成を示すもので、状態監視装置に電動操作方式断路器の電動操作監視回路を搭載したスイッチギヤの構成を示す概略ブロック構成図である。
図３において、電動断路器制御回路５００は、外部からの動作指令によってモータ駆動用接点５０１を閉じ、電動操作機構６００の駆動用モータを起動してモータに連結した主回路部７００の可動端子７０１を駆動する。主回路の可動端子７０１が動作完了位置まで動作すると、機構部に設けた動作完了検出スイッチＳＷによってモータ駆動用接点５０１を開き駆動用モータを停止する。
電動断路器制御回路５００には、駆動用モータ回路に設けられた変流器と、モータ駆動用接点５０１と連動する接点からなる駆動モータ電流センサ部５０２が設けられ、変流器の二次端子およびモータ駆動用接点と連動した接点は、状態監視装置８００に接続されている。 Embodiment 3 FIG.
FIG. 3 shows a schematic configuration of a switchgear according to Embodiment 3 of the present invention, and is a schematic block diagram showing a configuration of a switchgear in which an electric operation monitoring circuit of an electric operation type disconnector is mounted on a state monitoring device. is there.
In FIG. 3, the electric disconnector control circuit 500 closes the motor driving contact 501 by an operation command from the outside, activates the driving motor of the electric operation mechanism 600, and connects the movable terminal 701 of the main circuit unit 700 connected to the motor. Drive. When the movable terminal 701 of the main circuit is moved to the operation completion position, the motor drive contact 501 is opened by the operation completion detection switch SW provided in the mechanism section, and the drive motor is stopped.
The electric disconnector control circuit 500 is provided with a current transformer provided in the drive motor circuit and a drive motor current sensor unit 502 including a contact linked to the motor drive contact 501, and a secondary terminal of the current transformer The contacts linked to the motor driving contacts are connected to the state monitoring device 800.

状態監視装置８００には、上述した実施の形態１と同様の機能に加え、電動操作監視回路８０１が搭載されている。この電動操作監視回路８０１は、駆動モータ電流センサ部５０２からの、すなわち変流器およびモータ駆動用接点と連動した接点からの入力情報を演算処理し、駆動用モータ電流波形および駆動用モータの起動から停止までの時間から、操作機構部、中間機構部、主回路可動端子および主回路接点部での摩擦の変化、動作速度の変化などの断路器の状態を監視するものである。
なお、８０２は、周囲温度に基づき監視回路での演算処理時に温度補正を行うための温度センサである。 In addition to the same functions as those in the first embodiment described above, the state monitoring device 800 is equipped with an electric operation monitoring circuit 801. This electric operation monitoring circuit 801 calculates and processes the input information from the drive motor current sensor unit 502, that is, the contact linked to the current transformer and the motor drive contact, and activates the drive motor current waveform and the drive motor. From the time until the stop, the state of the disconnector such as a change in friction and a change in operation speed in the operation mechanism unit, the intermediate mechanism unit, the main circuit movable terminal and the main circuit contact unit is monitored.
Reference numeral 802 denotes a temperature sensor for performing temperature correction during calculation processing in the monitoring circuit based on the ambient temperature.

以上のようにこの発明の実施の形態３の開閉装置は、状態監視装置として、実施の形態１の機能に加えて、電磁操作方式遮断器に接続した電動操作方式断路器および電動操作方式接地開閉器の駆動用モータの通電電流、または通電時間の何れか１つまたは両方を監視する電動操作監視回路を備えたものである。
電動操作方式断路器および電動操作方式接地開閉器用操作機構部は、遮断器の機構部と同様に大気中の塵埃・異物が可動部に付着した場合に摩擦力増大による性能の低下を招く。このため、これまでは定期的に点検保守を実施していた。
これに対し実施の形態３によれば、駆動用モータの通電電流および通電時間は、摩擦力の変化に伴って変化することから、駆動用モータの通電電流および通電時間を監視することで、摩擦力の変化が性能に影響を与えない範囲で点検保守周期の延長が可能となる。
また、保守点検以前に何らかの異常が発生した場合には、駆動用モータの通電電流および通電時間の異常な変化を検知し、適切に清掃・グリスアップなどの保守を行なうことができ、故障、事故を未然に防止することができる。 As described above, the switchgear according to Embodiment 3 of the present invention serves as a state monitoring device, in addition to the functions of Embodiment 1, in addition to the electrically operated disconnector connected to the electromagnetically operated breaker and the electrically operated grounded switching An electric operation monitoring circuit for monitoring either one or both of the energizing current and the energizing time of the motor for driving the machine is provided.
As with the circuit breaker mechanism, the electric operation type disconnector and the electric operation type grounding switch operating mechanism unit cause a decrease in performance due to an increase in frictional force when dust or foreign matter in the atmosphere adheres to the movable part. For this reason, inspection and maintenance has been carried out regularly until now.
On the other hand, according to the third embodiment, since the energizing current and energizing time of the driving motor change with the change of the frictional force, the energizing current and energizing time of the driving motor are monitored. The inspection and maintenance cycle can be extended as long as the change in force does not affect the performance.
In addition, if any abnormality occurs before maintenance inspection, abnormal changes in the energizing current and energizing time of the drive motor can be detected, and maintenance such as cleaning and grease up can be performed properly. Can be prevented in advance.

この発明は、電力の送配電および受電設備などに用いられる電磁操作方式遮断器および電磁操作方式遮断器を搭載したスイッチギヤに利用できる。   INDUSTRIAL APPLICABILITY The present invention can be used for an electromagnetic operation type circuit breaker used for power transmission / distribution and power receiving facilities and a switchgear equipped with the electromagnetic operation type circuit breaker.

この発明の実施の形態１における電磁操作方式遮断器の概略ブロック構成図である。It is a schematic block block diagram of the electromagnetically operated system circuit breaker in Embodiment 1 of this invention. この発明の実施の形態２の電磁操作方式遮断器の構成を示す概略構成図である。It is a schematic block diagram which shows the structure of the electromagnetically operated system circuit breaker of Embodiment 2 of this invention. この発明の実施の形態３による開閉装置の概略ブロック構成図である。It is a schematic block block diagram of the switchgear by Embodiment 3 of this invention.

符号の説明Explanation of symbols

１：主回路、２：金属容器、３：遮断器、４：アンテナ部、５、１０：リード線、
６：密封端子、７：変換機、８：状態監視装置、９：圧力センサ、
１００：電磁操作機構、１０１：磁束センサ、２００：電磁操作機構制御回路、
２０１：コンデンサ電圧センサ、２０２：駆動電流センサ、
２０３：コイル抵抗センサ、３００：駆動用コンデンサ、４００：状態監視装置、
４０１：静電容量監視回路、４０２：コイル抵抗監視回路、４０３：温度センサ、 ５００：電動断路器制御回路、５０１：モータ駆動用接点、
５０２：駆動モータ電流センサ、６００：電動操作機構、
７００：主回路部、７０１：可動端子、ＳＷ：動作完了検出スイッチ、
８００：状態監視装置、８０１：電動操作監視回路、８０２：温度センサ 1: Main circuit, 2: Metal container, 3: Circuit breaker, 4: Antenna part, 5, 10: Lead wire,
6: sealed terminal, 7: converter, 8: condition monitoring device, 9: pressure sensor,
100: Electromagnetic operation mechanism, 101: Magnetic flux sensor, 200: Electromagnetic operation mechanism control circuit,
201: capacitor voltage sensor, 202: drive current sensor,
203: Coil resistance sensor, 300: Capacitor for driving, 400: State monitoring device,
401: Capacitance monitoring circuit, 402: Coil resistance monitoring circuit, 403: Temperature sensor, 500: Electric disconnector control circuit, 501: Contact for driving motor,
502: Drive motor current sensor, 600: Electric operation mechanism,
700: main circuit unit, 701: movable terminal, SW: operation completion detection switch,
800: Status monitoring device, 801: Electric operation monitoring circuit, 802: Temperature sensor

Claims (8)

電磁操作方式遮断器または電磁操作方式遮断器を搭載したスイッチギヤ等の開閉装置において、遮断器の電磁操作機構の駆動コイルへ駆動電流を供給する駆動用コンデンサ、
上記駆動用コンデンサの端子間電圧を測定するコンデンサ電圧センサと、上記電磁操作機構の駆動コイルへの駆動電流を測定する駆動電流センサと、上記駆動コイルの抵抗値を測定するコイル抵抗センサとを具備し、指令に基づいて上記駆動用コンデンサの充放電を制御する電磁操作機構制御回路部、
上記電磁操作機構の固定子内に配設された磁束センサ、
上記電磁操作機構制御回路部の各センサおよび上記磁束センサの出力が入力され、これら各センサからの入力情報を演算処理して、上記遮断器の駆動状態を監視する駆動監視回路部と、上記電磁操作機構内の磁束密度を監視する磁束監視回路部とを具備する状態監視装置を備え、
上記状態監視装置の駆動監視回路部は、上記コンデンサ電圧センサおよび駆動電流センサからの入力に基づくコンデンサ電圧および駆動電流波形から、上記遮断器の電磁操作機構
、主回路接点可動部および主回路接点部の内、いずれか1ヶ所または２ヶ所以上の摩擦の変化、主回路接点損耗量の変化、動作速度の変化を検出することによって上記遮断器の駆動状態を監視し、上記磁束監視回路部は、上記磁束センサからの入力に基づく磁束密度から上記電磁操作機構の開閉極保持状態を監視するようにしたことを特徴とする開閉装置。 In a switchgear or other switchgear equipped with an electromagnetic operation circuit breaker or an electromagnetic operation circuit breaker , a driving capacitor that supplies a drive current to the drive coil of the electromagnetic operation mechanism of the circuit breaker,
A capacitor voltage sensor for measuring a voltage between terminals of the driving capacitor; a driving current sensor for measuring a driving current to the driving coil of the electromagnetic operation mechanism; and a coil resistance sensor for measuring a resistance value of the driving coil. And an electromagnetic operation mechanism control circuit unit for controlling charging / discharging of the driving capacitor based on a command,
A magnetic flux sensor disposed in a stator of the electromagnetic operating mechanism,
The electromagnetic output of each sensor and the magnetic flux sensor of the operation mechanism control circuit unit is input, these input information from the sensors to the arithmetic processing, and the drive monitoring circuit for monitoring the driving state of the breaker, the electromagnetic includes a state monitoring device for and a flux monitor circuit for monitoring the magnetic flux density in the operating mechanism,
The drive monitoring circuit unit of the state monitoring device includes an electromagnetic operation mechanism of the circuit breaker based on a capacitor voltage and a drive current waveform based on inputs from the capacitor voltage sensor and the drive current sensor.
The circuit breaker drive status is detected by detecting changes in friction at one or more of the main circuit contact movable part and the main circuit contact part, changes in the amount of main circuit contact wear, and changes in operating speed. And the magnetic flux monitoring circuit section monitors the switching pole holding state of the electromagnetic operating mechanism from the magnetic flux density based on the input from the magnetic flux sensor . 上記状態監視装置には、上記駆動用コンデンサの充電または放電時の時間と該駆動用コンデンサの端子電圧を測定して駆動用コンデンサの静電容量を監視する静電容量監視回路部を備えたことを特徴とする請求項１に記載の開閉装置。 In the state monitoring device further comprising a capacitance monitoring circuit for monitoring the capacitance of the charge or discharge time of the time and the driving capacitor terminal voltage measured by the said driving capacitor of the driving capacitor The opening / closing device according to claim 1. 上記遮断器が動作していない間に上記電磁操作機構制御回路部から、電流を上記電磁操作機構内の駆動用コイルへ通電することによって該駆動用コイルの抵抗値を測定し、上記状態監視装置には、上記コイル抵抗センサで測定された抵抗値入力に基づいて上記駆動用コイルの通電性能および接続状態の何れか１つまたは両方を監視するコイル抵抗監視回路部を備えたことを特徴とする請求項１または請求項２のいずれか１項に記載の開閉装置。 From the electromagnetic operating mechanism control circuit unit while the breaker is not in operation, measures the resistance of the driving coil by energizing current to the driving coil in the electromagnetic operating mechanism, the state monitoring device the, characterized by comprising a coil resistance monitoring circuit for monitoring any one or both of the current performance and the connection state of the drive coil based on the measured resistance value entered by the coil resistance sensor The switchgear according to any one of claims 1 and 2. 上記状態監視装置には、主回路から絶縁して配置したアンテナ部によって検出した電圧または電磁波から主回路部での部分放電発生の有無を検知する部分放電検出回路部を備えたことを特徴とする請求項１〜請求項３のいずれか１項に記載の開閉装置。   The state monitoring device includes a partial discharge detection circuit unit that detects whether or not partial discharge has occurred in the main circuit unit from a voltage or electromagnetic wave detected by an antenna unit that is insulated from the main circuit. The switchgear according to any one of claims 1 to 3. 上記電磁操作方式遮断器が真空遮断器であり、該真空遮断器に接続した主回路に主回路から絶縁して電磁波検出用アンテナ部を設け、上記状態監視装置には、上記真空遮断器の真空スイッチ管内の真空度が低下した場合に発生する電磁波を上記アンテナ部からの入力によって検出し真空度を監視する真空度監視回路部を備えたことを特徴とする請求項１〜請求項４のいずれか１項に記載の開閉装置。 The electromagnetic control system circuit breaker is a vacuum circuit breaker, isolated from the main circuit to the main circuit connected to the vacuum circuit breaker an electromagnetic wave detection antenna unit provided in the above-mentioned state monitoring device, the vacuum of the vacuum circuit breaker 5. A vacuum level monitoring circuit unit for detecting electromagnetic waves generated when the vacuum level in the switch tube is lowered by input from the antenna unit and monitoring the vacuum level. The switchgear according to claim 1. 上記開閉装置が金属容器内にＳＦ６、乾燥空気、窒素ガス、二酸化炭素ガスなどの絶縁性ガスを大気圧より高い圧力で封入したガス絶縁スイッチギヤであり、金属容器の一部に金属容器内のガス圧力を測定する圧力センサを設け、上記状態監視装置には、上記圧力センサからの入力によってガス圧力を監視する圧力監視回路部を備えたことを特徴とする請求項１〜請求項５のいずれか１項に記載の開閉装置。 The switchgear is a gas-insulated switchgear in which an insulating gas such as SF6, dry air, nitrogen gas, carbon dioxide gas or the like is enclosed in a metal container at a pressure higher than atmospheric pressure. a pressure sensor for measuring the gas pressure is provided, the above-mentioned state monitor any of claims 1 to 5, characterized in that a pressure monitoring circuit for monitoring the gas pressure by an input from the pressure sensor The switchgear according to claim 1. 上記状態監視装置には、上記電磁操作方式遮断器に接続した電動操作方式断路器および電動操作方式接地開閉器の駆動用モータの通電電流または通電時間の何れか１つまたは両方を監視する電動操作監視回路部を備えたことを特徴とする請求項１〜請求項６のいずれか１項に記載の開閉装置。 The aforementioned condition monitoring device, an electric operation to monitor any one or both of the energizing current or conduction time of the drive motor of the electric operating system disconnector and motor operation mode earthing switch connected to the electromagnetic control system circuit breaker The switchgear according to any one of claims 1 to 6, further comprising a monitoring circuit unit. 上記状態監視装置は温度センサを搭載し、上記温度センサにて測定した周囲温度に基づき上記各監視回路部での演算処理時に温度補正を行なうことを特徴とする請求項１〜請求項７のいずれか１項に記載の開閉装置。 8. The state monitoring apparatus includes a temperature sensor, and performs temperature correction during calculation processing in each of the monitoring circuit units based on an ambient temperature measured by the temperature sensor. The switchgear according to claim 1.
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