JPH0277657A - Method for measuring voltage of power transmission line - Google Patents
Method for measuring voltage of power transmission lineInfo
- Publication number
- JPH0277657A JPH0277657A JP22953088A JP22953088A JPH0277657A JP H0277657 A JPH0277657 A JP H0277657A JP 22953088 A JP22953088 A JP 22953088A JP 22953088 A JP22953088 A JP 22953088A JP H0277657 A JPH0277657 A JP H0277657A
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- frequency component
- high frequency
- transmission line
- power transmission
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000005540 biological transmission Effects 0.000 title claims abstract description 20
- 238000000034 method Methods 0.000 title claims abstract description 7
- 239000012212 insulator Substances 0.000 abstract description 16
- 230000003287 optical effect Effects 0.000 abstract description 7
- 239000003990 capacitor Substances 0.000 abstract description 5
- 238000005259 measurement Methods 0.000 abstract description 4
- 229910000831 Steel Inorganic materials 0.000 abstract description 2
- 230000002159 abnormal effect Effects 0.000 abstract description 2
- 239000010959 steel Substances 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 5
- 238000000691 measurement method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
Landscapes
- Measurement Of Current Or Voltage (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は、送電線に加わる高周波成分電圧を測定する送
電線電圧測定方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a power transmission line voltage measuring method for measuring high frequency component voltage applied to a power transmission line.
［従来技術］
従来、送電線に加わる高周波成分電圧の測定は、碍子連
に印加される電圧を分圧して電圧センサに印加し、高周
波成分電圧のみを測定していた。この場合、電圧センサ
の出力は、予め行った校正により印加電圧を推定するこ
とにより得ていた。[Prior Art] Conventionally, high-frequency component voltages applied to power transmission lines have been measured by dividing the voltage applied to the insulators and applying the divided voltage to a voltage sensor to measure only the high-frequency component voltages. In this case, the output of the voltage sensor was obtained by estimating the applied voltage through calibration performed in advance.
［発明が解決しようとする課題］
しかしながら、従来の送電線電圧測定方法では、電圧セ
ンサの出力値が、気温変化や碍子連の形状などにより校
正時の出力と違ってしまい、正確に測定が行えない問題
点があった。[Problem to be solved by the invention] However, in the conventional power transmission line voltage measurement method, the output value of the voltage sensor differs from the output at the time of calibration due to temperature changes, the shape of the insulator chain, etc., and accurate measurement cannot be performed. There were no problems.
本発明の目的は、気温変化や碍子連の形状などに左右さ
れないで高周波成分電圧の測定が行える送電線電圧測定
方法を提供することにある。An object of the present invention is to provide a power transmission line voltage measurement method that can measure high frequency component voltages without being affected by temperature changes, the shape of insulator chains, etc.
［課題を解決するための手段］
上記の目的を達成するため、本発明に係る送電線電圧測
定は、送電線電圧をその高周波成分電圧及び商用周波成
分電圧について同時に測定し、既知の前記商用周波成分
電圧を基準電圧として前記両成分電圧の比から前記高周
波成分電圧を求めることを特徴とする。[Means for Solving the Problems] In order to achieve the above object, the power transmission line voltage measurement according to the present invention measures the power transmission line voltage simultaneously for its high frequency component voltage and commercial frequency component voltage, and measures the known commercial frequency component voltage. The method is characterized in that the high-frequency component voltage is determined from the ratio of the two component voltages using the component voltage as a reference voltage.
［作用］
このように既知の商用周波成分電圧を基準電圧として高
周波成分電圧と該商用周波成分電圧との比により高周波
成分電圧を求めると、気象条件や碍子連の形状に関係な
く、正しい高周波成分電圧を求めることができる。[Operation] When the high frequency component voltage is determined by the ratio of the high frequency component voltage to the commercial frequency component voltage using the known commercial frequency component voltage as the reference voltage, the correct high frequency component can be obtained regardless of the weather conditions or the shape of the insulator chain. You can find the voltage.
［実施例］
以下、本発明の実施例を第１図乃至第６図（Ａ）（Ｂ）
を参照して詳細に説明する。図示のように送電線１は碍
子連２を介して鉄塔３に架設されている。碍子連２の接
地側の１番目の碍子２Ａに並列に分圧用の大容量のコン
デンサ分圧器４が接続され、該コンデンサ分圧器４に並
列に電圧センサ５が接続されている。本実施例では、コ
ンデンサ４と電圧センサ５とが組合わされた検出器６が
用いられている。電圧センサ５として本実施例では、電
圧の変化を光信号の変化として出力する光電圧センサが
用いられている。電圧センサ５の出力は光ケーブル７で
測定器８に印加されるようになっている。これにより検
出器６と測定器８とが光ケーブル７により電気的に絶縁
されているため、誘導ノイズを受けにくい。[Example] Examples of the present invention are shown in FIGS. 1 to 6 (A) and (B) below.
This will be explained in detail with reference to . As shown in the figure, a power transmission line 1 is installed on a steel tower 3 via an insulator chain 2. A large-capacity capacitor voltage divider 4 for voltage division is connected in parallel to the first insulator 2A on the ground side of the insulator chain 2, and a voltage sensor 5 is connected in parallel to the capacitor voltage divider 4. In this embodiment, a detector 6 in which a capacitor 4 and a voltage sensor 5 are combined is used. In this embodiment, an optical voltage sensor is used as the voltage sensor 5, which outputs a change in voltage as a change in an optical signal. The output of the voltage sensor 5 is applied to a measuring device 8 via an optical cable 7. As a result, the detector 6 and the measuring device 8 are electrically insulated by the optical cable 7, so that they are less susceptible to induced noise.
このような装置においては、送電線１の商用周波の課電
電圧を常時電圧センサ５を用いて測定し、その電圧を基
準電圧とする。碍子連２に異常電圧（高周波成分電圧）
が加わったときの送電線電圧を、第１図に示すようにそ
の高周波成分電圧Ｘ及び商用周波成分電圧ｙについて同
時に測定する。In such a device, the applied voltage of the commercial frequency of the power transmission line 1 is constantly measured using the voltage sensor 5, and the measured voltage is used as the reference voltage. Abnormal voltage in insulator chain 2 (high frequency component voltage)
As shown in FIG. 1, the high frequency component voltage X and the commercial frequency component voltage y are simultaneously measured.
これらの成分電圧Ｘ、ｙからなる送電線電圧を各成分毎
に分離すると第６図（Ａ）（Ｂ）に示すようになる。こ
の場合、商用周波成分電圧ｙは既知の電圧であるため、
この商用周波成分電圧ｙを基準電圧として画成分電圧ｘ
、ｙの比ｘ：ｙより高周波成分電圧Ｘを求める。なお、
高周波成分電圧Ｘと商用周波成分電圧ｙとの分離は、バ
ンドパスフィルタで行うことができる。When the power transmission line voltage consisting of these component voltages X and y is separated into each component, it becomes as shown in FIGS. 6(A) and 6(B). In this case, since the commercial frequency component voltage y is a known voltage,
Image component voltage x using this commercial frequency component voltage y as a reference voltage
, y, the high frequency component voltage X is determined from the ratio x:y. In addition,
The high frequency component voltage X and the commercial frequency component voltage y can be separated using a band pass filter.
［発明の効果］
以上説明したように本発明に係る送電線電圧測定方法は
、送電線電圧をその高周波成分電圧及び商用周波成分電
圧について同時に測定し、既知の商用周波成分電圧を基
準電圧として画成分電圧の比から高周波成分電圧を求め
るので、碍子連の形状や気象条件に影響されないで、正
確に高周波成分電圧を測定することができる。[Effects of the Invention] As explained above, the power transmission line voltage measuring method according to the present invention simultaneously measures the transmission line voltage for its high frequency component voltage and commercial frequency component voltage, and uses the known commercial frequency component voltage as a reference voltage. Since the high frequency component voltage is determined from the ratio of the component voltages, it is possible to accurately measure the high frequency component voltage without being affected by the shape of the insulator chain or weather conditions.
第１図は送電線電圧の一例を示す波形図、第２図は本発
明の方法を実施する測定装置の一例を示す説明図、第３
図は検出器の取付は方を示す斜視図、第４図は碍子連と
電圧センサとの接続関係を示す回路図、第５図は測定装
置の一例を示すブロック図、第６図（Ａ）（Ｂ）は第１
図に示す送電線電圧を分離した各成分電圧の波形図であ
る。
１・・・送電線、２・・・碍子連、４・・・コンデンサ
分圧器、５・・・電圧センサ、７・・・光ケーブル、８
・・・測定器。
第１図
第３図
第５図
第２図FIG. 1 is a waveform diagram showing an example of power transmission line voltage, FIG. 2 is an explanatory diagram showing an example of a measuring device implementing the method of the present invention, and FIG.
The figure is a perspective view showing how to install the detector, Figure 4 is a circuit diagram showing the connection relationship between the insulator chain and the voltage sensor, Figure 5 is a block diagram showing an example of the measuring device, and Figure 6 (A). (B) is the first
It is a waveform diagram of each component voltage which separated the power transmission line voltage shown in the figure. 1... Power transmission line, 2... Insulator chain, 4... Capacitor voltage divider, 5... Voltage sensor, 7... Optical cable, 8
...Measuring instrument. Figure 1 Figure 3 Figure 5 Figure 2
Claims (1)
について同時に測定し、既知の前記商用周波成分電圧を
基準電圧として前記両成分電圧の比から前記高周波成分
電圧を求めることを特徴とする送電線電圧測定方法。A power transmission line voltage characterized in that a high frequency component voltage and a commercial frequency component voltage of the power transmission line voltage are measured simultaneously, and the high frequency component voltage is determined from the ratio of the two component voltages using the known commercial frequency component voltage as a reference voltage. Measuring method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22953088A JPH0277657A (en) | 1988-09-13 | 1988-09-13 | Method for measuring voltage of power transmission line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22953088A JPH0277657A (en) | 1988-09-13 | 1988-09-13 | Method for measuring voltage of power transmission line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0277657A true JPH0277657A (en) | 1990-03-16 |
Family
ID=16893613
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22953088A Pending JPH0277657A (en) | 1988-09-13 | 1988-09-13 | Method for measuring voltage of power transmission line |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0277657A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104215819A (en) * | 2014-09-25 | 2014-12-17 | 国家电网公司 | Monitoring device for gas insulated switchgear (GIS) thunder-and-lightening invasion overvoltage |
-
1988
- 1988-09-13 JP JP22953088A patent/JPH0277657A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104215819A (en) * | 2014-09-25 | 2014-12-17 | 国家电网公司 | Monitoring device for gas insulated switchgear (GIS) thunder-and-lightening invasion overvoltage |
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