JPH063462B2 - Capacitive voltage divider type voltage detector - Google Patents
Capacitive voltage divider type voltage detectorInfo
- Publication number
- JPH063462B2 JPH063462B2 JP59031184A JP3118484A JPH063462B2 JP H063462 B2 JPH063462 B2 JP H063462B2 JP 59031184 A JP59031184 A JP 59031184A JP 3118484 A JP3118484 A JP 3118484A JP H063462 B2 JPH063462 B2 JP H063462B2
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- capacitor
- capacitive
- detector
- voltage dividing
- 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.)
- Expired - Lifetime
Links
- 239000003990 capacitor Substances 0.000 claims description 34
- 239000012212 insulator Substances 0.000 claims description 9
- 230000001629 suppression Effects 0.000 claims description 7
- 230000002457 bidirectional effect Effects 0.000 claims description 4
- 230000000116 mitigating effect Effects 0.000 claims description 4
- 238000001514 detection method Methods 0.000 description 11
- 230000005684 electric field Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
Landscapes
- Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
- Measurement Of Current Or Voltage (AREA)
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は、変電所等において高圧線路の検電に使用され
る容量分圧形検電装置に関するものである。Description: TECHNICAL FIELD The present invention relates to a capacitive voltage dividing type voltage detection device used for voltage detection of a high voltage line in a substation or the like.
（従来技術） 従来、変電所等の高圧線路の検電には、主コンデンサと
分圧コンデンサとこの分圧コンデンサにより取出された
分圧電圧を更に低圧化させる変圧器とから成る容量形計
器用変圧器を高圧線路に接続したうえ、その２次端子に
アナログ式の検電計器を接続した検電装置が用いられて
いるが、この装置は極めて高価であるうえ高電圧用のも
のは装置が大型化して設置スペースの確保が容易でない
等の問題があった。(Prior Art) Conventionally, for the detection of a high-voltage line in a substation or the like, for a capacitance type instrument including a main capacitor, a voltage dividing capacitor, and a transformer for further reducing the voltage divided by the voltage dividing capacitor. A voltage detection device is used in which a transformer is connected to a high-voltage line and an analog-type voltage detector is connected to its secondary terminal. However, this device is extremely expensive and the device for high voltage is not. There was a problem that it was not easy to secure the installation space due to its large size.
（発明の目的） 本発明はこのような従来の問題点を解消し、安価に製作
することができるうえに大きい設置スペースを必要とし
ない容量分圧形検電装置を目的として完成されたもので
ある。(Object of the Invention) The present invention has been completed with the object of solving the above-mentioned problems of the related art, capable of being manufactured at low cost, and not requiring a large installation space. is there.
（発明の構成） 上記の目的を達成するためになされた本発明は、電力機
器用碍子に内蔵されたコンデンサの低圧端子に外部から
接続して１０〜１０００Ｖの電圧を分担する分圧コンデ
ンサと、該分圧コンデンサに遮蔽ケーブルを介して接続
される波頭緩和用コンデンサと雷インパルス電圧抑制用
双方向ツェナーダイオードと開閉インパルス抑制用サー
ジアレスタとを備えたサージ抑制回路と、その出力側に
接続された高入力インピーダンスの電圧検出部とから成
ることを特徴とするものである。(Structure of the Invention) The present invention made to achieve the above object is a voltage dividing capacitor which is externally connected to a low voltage terminal of a capacitor incorporated in an insulator for electric power equipment and which shares a voltage of 10 to 1000V, A surge suppressor circuit comprising a wavefront mitigating capacitor connected to the voltage dividing capacitor via a shielded cable, a lightning impulse voltage suppressing bidirectional Zener diode, and a switching impulse suppressing surge arrester, and a surge suppressing circuit connected to the output side thereof. It is characterized in that it comprises a voltage detection unit with high input impedance.
本発明の容量分圧形検電装置は、従来の検電装置が高電
圧を分圧するための主コンデンサと分圧コンデンサと変
圧器とを備えていたのに対し、電力機器用碍子に内蔵さ
れている電界制御用のコンデンサを主コンデンサとして
利用することにより装置の小型化と制作費の引下げに成
功したものである。In contrast to the conventional voltage detecting device having a main capacitor for dividing a high voltage, a voltage dividing capacitor, and a transformer, the capacitance voltage dividing type voltage detecting device of the present invention is built in an insulator for power equipment. By using the existing electric field control capacitor as the main capacitor, we succeeded in downsizing the device and reducing the production cost.
（実施例） 以下、本発明を断路器に接続した図示の実施例により詳
細に説明する。(Example) Hereinafter, the present invention will be described in detail with reference to an illustrated example in which a disconnector is connected.
図中、(1)は３６ＫＶ〜３００ＫＶの高圧線路用の断路
器、(2)はその母線側に立設された既設のＳＰ形の電力
機器用碍子であって、コンデンサ(3)を内蔵させたもの
である。本発明の容量分圧形検電装置はコンデンサ(3)
の低圧端子(4)に外部から接続して用いられるものであ
り、該低圧端子(4)に接続されて１０〜１０００Ｖ程度
の電圧を分担するための分圧コンデンサ(5)と、該分圧
コンデンサ(5)に遮蔽ケーブル(6)を介して接続されたサ
ージ抑制回路(7)とその出力側に接続されたディジタル
電圧計のような高入力インピーダンスの電圧検出部(8)
及びリレー接点メイク用の差動増幅回路のような高入力
インピーダンスの電圧検出部(12)とから成るものであ
る。遮蔽ケーブル(6)は外部からのノイズの影響を防止
し電圧検出部(8)、(12)の誤動作を防止するためのもの
である。In the figure, (1) is a disconnector for a high voltage line of 36 KV to 300 KV, (2) is an existing SP type insulator for power equipment which is erected on the busbar side, and has a built-in capacitor (3). It is a thing. The capacitive voltage-dividing type voltage detector of the present invention is a capacitor (3)
And a voltage dividing capacitor (5) connected to the low voltage terminal (4) for sharing a voltage of about 10 to 1000 V, and the voltage dividing terminal (4). A surge suppressor (7) connected to the capacitor (5) through a shielded cable (6) and a voltage detector (8) with a high input impedance such as a digital voltmeter connected to its output side.
And a voltage detector (12) having a high input impedance such as a differential amplifier circuit for making a relay contact. The shielded cable (6) is for preventing the influence of noise from the outside and for preventing malfunction of the voltage detectors (8), (12).
サージ抑制回路(7)は、商用周波過電圧抑制用の波頭緩
和用コンデンサ(9)と、雷インパルス電圧抑制用双方向
ツェナーダイオード(10)と、開閉インパルス抑制用サー
ジアレスタ(11)とを並列接続したものであり、商用周波
過電圧、雷インパルス、開閉インパルス等により異常電
圧が電圧検出部(8)、(12)に作用することを防止するも
のである。The surge suppression circuit (7) has a wavefront mitigation capacitor (9) for commercial frequency overvoltage suppression, a lightning impulse voltage suppression bidirectional Zener diode (10), and a switching impulse suppression surge arrester (11) connected in parallel. This is to prevent the abnormal voltage from acting on the voltage detectors (8) and (12) due to a commercial frequency overvoltage, a lightning impulse, a switching impulse, or the like.
電圧検出部(8)、(12)は従来のアナログ式の検電計器に
比較して極めてわずかな電力により作動するディジタル
式電圧計、ディジタル式電流計、ＩＣ組込増幅器等の高
入力インピーダンスの電圧検出部を用いるものとし、こ
のため従来の容量計器用変圧器に用いられていた変圧器
を省略することができる。なお、(12)のリレー接点メイ
ク用の差動増幅回路のような電圧検出部は断路器(1)の
自動制御化、遠隔操作化の便を図るものである。The voltage detectors (8) and (12) have a high input impedance such as a digital voltmeter, a digital ammeter, and an IC built-in amplifier that operate with a very small amount of power as compared with the conventional analog-type voltage detector. Since the voltage detecting unit is used, the transformer used in the conventional transformer for a capacity meter can be omitted. The voltage detection unit such as the differential amplifier circuit (12) for making the relay contact is intended to facilitate automatic control and remote operation of the disconnector (1).
（作用） このように構成された本発明の容量分圧形検電装置は、
電力機器用碍子(2)に内蔵されたコンデンサ(3)の低圧端
子(4)に接続して使用されるもので、電力機器用碍子(2)
に内蔵されたコンデンサ(3)を主コンデンサとして分圧
用コンデンサ(5)が１００ＫＶ〜３００ＫＶの高圧から
１０〜１０００Ｖ、好ましくは５０〜６００Ｖの電圧を
分圧し、この電圧は分圧コンデンサ(5)に遮蔽ケーブル
(6)を介して接続されたサージ抑制回路(7)を経て高入力
インピーダンスの電圧検出部(8)、(12)により精度良く
検出されるものである。なお、分圧用コンデンサ(5)に
より分圧される電圧は前述のとおり１０〜１０００Ｖ、
好ましくは５０〜６００Ｖの範囲であり、１０Ｖ以下で
は電圧検出部(8)、(12)を精度良く作動させるに不十分
であり、逆に１０００Ｖを越えると電圧検出部(8)、(1
2)を直接接続することができないばかりか常時印加され
る電圧の他に侵入する雷サージ、開閉サージ等により接
続機器類が絶縁破壊される虞れがある。(Operation) The capacitive voltage dividing type voltage detector of the present invention configured as described above is
It is used by connecting to the low voltage terminal (4) of the capacitor (3) built in the insulator (2) for power equipment, and the insulator (2) for power equipment.
A voltage dividing capacitor (5) divides a voltage of 10 to 1000 V, preferably 50 to 600 V from a high voltage of 100 KV to 300 KV using the built-in capacitor (3) as a main capacitor, and this voltage is applied to the voltage dividing capacitor (5). Shielded cable
The voltage is accurately detected by the voltage detectors (8) and (12) having a high input impedance via the surge suppression circuit (7) connected via (6). The voltage divided by the voltage dividing capacitor (5) is 10 to 1000 V as described above,
It is preferably in the range of 50 to 600 V, and 10 V or less is not enough to operate the voltage detection units (8) and (12) with high precision, and conversely, when it exceeds 1000 V, the voltage detection units (8) and (1) are
In addition to being unable to connect 2) directly, there is a risk that the connected devices will be dielectrically damaged due to lightning surges, switching surges, etc. that enter in addition to the constantly applied voltage.
このように本発明の容量分圧形検電装置は、電力機器用
碍子(2)に内蔵された電界制御用のコンデンサ(3)を主コ
ンデンサとして用いるものであるから、高電圧を分担す
るため大型化させる必要のあった主コンデンサを省略す
ることができ、装置を著しく小型化することができると
ともに製作費の大幅な引下げに成功したものである。な
お、以上の実施例では電界制御用のコンデンサ(3)を既
設の断路器のSP形の電力機器用碍子(2)に内蔵させたも
のであるが、変圧器用ブッシングのように既にコンデン
サを内蔵しているものについては、そのまま本発明に使
用することがてきる。As described above, the capacitive voltage divider type electric power detection apparatus of the present invention uses the electric field control capacitor (3) built in the insulator (2) for electric power equipment as the main capacitor, so that the high voltage is shared. The main capacitor, which had to be increased in size, can be omitted, the device can be significantly downsized, and the manufacturing cost has been significantly reduced. In the above embodiment, the electric field control capacitor (3) is built into the existing disconnector SP type power device insulator (2), but it already has a built-in capacitor like a transformer bushing. Those that have been used can be directly used in the present invention.
（発明の効果） 本発明は以上の説明から明らかなように、装置の小型化
と製作費の大幅な引下げに成功したものであり、しか
も、商用周波過電圧、雷インパルス、開閉インパルス等
を抑制しつつ精度の良い検電が可能なものであるから、
従来の高圧線路用検電装置の問題点を解消したものとし
て、産業の発展に寄与するところは極めて大である。(Effects of the Invention) As is apparent from the above description, the present invention has succeeded in downsizing the device and significantly reducing the manufacturing cost, and further suppresses commercial frequency overvoltage, lightning impulse, switching impulse, etc. However, since it is possible to perform accurate voltage detection,
As a solution to the problems of the conventional high-voltage line voltage detection device, it contributes significantly to industrial development.
図面は本発明の実施例の装置の使用状態を示す正面図で
ある。 (2)：電力機器用碍子、(3)：コンデンサ、(4)：低圧端
子、(5)：分圧コンデンサ、(6)：遮蔽ケーブル、(7)：
サージ抑制回路、(8)：電圧検出部、(9)：波頭緩和用コ
ンデンサ、(10)：雷インパルス電圧抑制用双方向ツェナ
ーダイオード、(11)：開閉インパルス抑制用サージアレ
スタ、(12)：電圧検出部。The drawing is a front view showing a usage state of the apparatus according to the embodiment of the present invention. (2): Insulator for power equipment, (3): Capacitor, (4): Low voltage terminal, (5): Voltage dividing capacitor, (6): Shielded cable, (7):
Surge suppressor, (8): Voltage detector, (9): Capacitor for wavefront mitigation, (10): Bidirectional Zener diode for suppressing lightning impulse voltage, (11): Surge arrester for switching impulse suppression, (12): Voltage detector.
Claims (1)
サ(3)の低圧端子４に外部から接続して１０〜１０００
Ｖの電圧を分担する分圧コンデンサ(5)と、該分圧コン
デンサ(5)に遮蔽ケーブル(6)を介して接続される波頭緩
和用コンデンサ(9)と雷インパルス電圧抑制用双方向ツ
ェナーダイオード10と開閉インパルス抑制用サージアレ
スタ(11)とを備えたサージ抑制回路(7)と、その出力側
に接続された高入力インピーダンスの電圧検出部(8)、
(12)とから成ることを特徴とする容量分圧形検電装置。1. A low voltage terminal 4 of a capacitor (3) built in an insulator (2) for electric power equipment, which is externally connected to 10 to 1000.
A voltage dividing capacitor (5) for sharing the voltage of V, a wave front mitigating capacitor (9) connected to the voltage dividing capacitor (5) through a shield cable (6), and a lightning impulse voltage suppressing bidirectional Zener diode Surge suppressor circuit (7) comprising 10 and a surge arrester (11) for switching impulse suppression, and a high input impedance voltage detector (8) connected to its output side,
(12) A capacitive voltage dividing type voltage detecting device comprising:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59031184A JPH063462B2 (en) | 1984-02-21 | 1984-02-21 | Capacitive voltage divider type voltage detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59031184A JPH063462B2 (en) | 1984-02-21 | 1984-02-21 | Capacitive voltage divider type voltage detector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60174955A JPS60174955A (en) | 1985-09-09 |
| JPH063462B2 true JPH063462B2 (en) | 1994-01-12 |
Family
ID=12324353
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59031184A Expired - Lifetime JPH063462B2 (en) | 1984-02-21 | 1984-02-21 | Capacitive voltage divider type voltage detector |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH063462B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06210232A (en) * | 1993-01-19 | 1994-08-02 | Nippon Steel Corp | Coating material supply device |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0510982A (en) * | 1991-06-28 | 1993-01-19 | Kubota Corp | Engine-driven welder |
| CN106338636A (en) * | 2016-06-08 | 2017-01-18 | 浙江新能量科技股份有限公司 | Voltage sampling method using magnet |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5143395U (en) * | 1974-09-27 | 1976-03-31 | ||
| JPH0122143Y2 (en) * | 1980-04-17 | 1989-06-29 | ||
| JPS57130915U (en) * | 1981-02-09 | 1982-08-14 | ||
| JPS596779U (en) * | 1982-07-05 | 1984-01-17 | 株式会社明電舎 | Electrical insulator |
-
1984
- 1984-02-21 JP JP59031184A patent/JPH063462B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06210232A (en) * | 1993-01-19 | 1994-08-02 | Nippon Steel Corp | Coating material supply device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60174955A (en) | 1985-09-09 |
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