CN108593997B - Voltage measuring device and method suitable for power transmission line - Google Patents
Voltage measuring device and method suitable for power transmission line Download PDFInfo
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- CN108593997B CN108593997B CN201810563109.4A CN201810563109A CN108593997B CN 108593997 B CN108593997 B CN 108593997B CN 201810563109 A CN201810563109 A CN 201810563109A CN 108593997 B CN108593997 B CN 108593997B
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 60
- 238000000034 method Methods 0.000 title claims abstract description 13
- 238000005070 sampling Methods 0.000 claims abstract description 76
- 239000002184 metal Substances 0.000 claims abstract description 46
- 239000012212 insulator Substances 0.000 claims abstract description 29
- 238000006243 chemical reaction Methods 0.000 claims abstract description 16
- 238000005259 measurement Methods 0.000 claims description 14
- 230000003287 optical effect Effects 0.000 claims description 9
- 239000000853 adhesive Substances 0.000 claims description 6
- 230000001070 adhesive effect Effects 0.000 claims description 6
- 239000002131 composite material Substances 0.000 claims description 3
- 239000011810 insulating material Substances 0.000 claims description 3
- -1 polytetrafluoroethylene Polymers 0.000 claims description 3
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 3
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 3
- 238000000691 measurement method Methods 0.000 claims 1
- 238000012806 monitoring device Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005294 ferromagnetic effect Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Current Or Voltage (AREA)
Abstract
the invention discloses a voltage measuring device and method suitable for a power transmission line. The measuring device comprises: the device comprises an insulator, a grading ring, a measuring circuit, a wireless transmitter or an electro-optical conversion module and a voltage display; the transmission line to be tested is supported by a hardware fitting at the tail end of the insulator; the equalizing ring is sleeved and fixed on a hardware fitting at the tail end of the insulator through a connecting rod and a fixing ring; the metal sensing piece is a thin piece cut from the side surface of the grading ring, and is separated from the cutting surface of the grading ring through an insulating film; the sampling resistor is positioned in the grading ring, one end of the sampling resistor is connected with the metal sensing sheet, the other end of the sampling resistor is connected with the inner surface of the grading ring, two ends of the sampling resistor are connected to one end of the cable in parallel, and the other end of the cable is connected to the measuring circuit; the wireless transmitter or the electro-optical conversion module is used for transmitting a resistance voltage signal; and the voltage display is used for calculating and displaying the voltage value of the power transmission line according to the received resistance voltage value. The measuring device has the advantages of small volume and low cost.
Description
Technical Field
The invention relates to the field of voltage measurement, in particular to a voltage measurement device and method suitable for a power transmission line.
background
Along with the increase of the power consumption demand, the scale of the power grid is continuously strengthened, the remote high-power transmission technology is more advanced, the voltage level of the power system is also continuously improved, and the structure of the power grid is more complicated. In the operation of an electric power system, parameters such as voltage and current are often monitored in real time in order to ensure safe and stable operation of a power grid. In the high-voltage measuring method and the high-voltage measuring equipment adopted at present, the electromagnetic voltage transformer has the problems of ferromagnetic saturation, nonlinear output voltage, poor transient response and the like under higher voltage; the capacitor voltage transformer is difficult to insulate under high voltage, and potential risks such as flammability and explosiveness are brought to the system. These voltage measuring devices cannot be installed on the line due to their large size, and can only be installed in a substation. The transmission line is an important component of power system energy transmission. Since the distance of the space spanned by the system is long, ranging from a few kilometers to more than one thousand kilometers, the line inspection, maintenance and online state monitoring are very difficult. The voltage measuring device is small in size and low in price and can be installed anywhere on a line, and the voltage measuring device has important significance for safe and stable operation of a power system.
disclosure of Invention
The invention aims to provide a voltage measuring device and method suitable for a power transmission line so as to realize voltage measurement of the power transmission line.
In order to achieve the purpose, the invention provides the following scheme:
a voltage measurement device suitable for use with a power transmission line, the measurement device comprising: the device comprises an insulator, a grading ring, a sampling resistor, a metal sensing sheet, a measuring circuit and a voltage display;
The power transmission line to be tested is fixed at the tail end of the insulator through a hardware fitting at the tail end of the insulator;
the equalizing ring is sleeved and fixed on a hardware fitting at the tail end of the insulator through a connecting rod and a fixing ring; the equalizing ring is connected with the input end of the measuring circuit through a cable; the grading ring comprises a sampling resistor and a metal sensing sheet inside; the metal sensing piece is a thin piece cut from the side surface of the grading ring, the metal sensing piece is adhered to the corresponding cutting surface through an adhesive, and the metal sensing piece is separated from the cutting surface of the grading ring through an insulating film; the metal sensing sheet is connected with a first connecting end of the sampling resistor through a wire, the inner surface of the equalizing ring is connected with a second connecting end of the sampling resistor, the first connecting end and the second connecting end of the sampling resistor are connected to one end of the cable in parallel, and the other end of the cable is connected to the input end of the measuring circuit;
the measuring circuit is used for measuring the voltage value of the sampling resistor inside the grading ring;
And the voltage display is positioned at a receiving end and used for calculating and displaying the voltage measurement value of the power transmission line according to the voltage value of the sampling resistor inside the grading ring.
optionally, the measuring device further includes: a wireless transmitter or an electro-optic conversion module;
The output end of the measuring circuit is connected with the input end of the wireless transmitter, and the wireless transmitter transmits the voltage value measured by the measuring circuit to a voltage display of a receiving end through the transmitted radio waves;
Or the output end of the measuring circuit is connected with the input end of the electro-optical conversion module, and the electro-optical conversion module converts the electric signal of the voltage value measured by the measuring circuit into an optical signal through a ground wire composite optical cable and transmits the optical signal to a voltage display at a receiving end.
Optionally, the resistance range of the sampling resistor inside the grading ring is 0.1M Ω -200M Ω.
Optionally, the insulating film is made of a polytetrafluoroethylene insulating material.
The invention also provides a voltage measuring method suitable for the power transmission line, which comprises the following steps:
acquiring a voltage value of a sampling resistor measured by a measuring circuit in a measuring device; the measuring device includes: the device comprises an insulator, a grading ring, a sampling resistor, a metal sensing sheet, a measuring circuit and a voltage display; the power transmission line to be tested is fixed at the tail end of the insulator through a hardware fitting at the tail end of the insulator; the equalizing ring is sleeved and fixed on a hardware fitting at the tail end of the insulator through a connecting rod and a fixing ring; the equalizing ring is connected with the input end of the measuring circuit through a cable; the grading ring comprises a sampling resistor and a metal sensing sheet inside; the metal sensing piece is a thin piece cut from the side surface of the grading ring, the metal sensing piece is adhered to the corresponding cutting surface through an adhesive, and the metal sensing piece is separated from the cutting surface of the grading ring through an insulating film; the metal sensing sheet is connected with a first connecting end of the sampling resistor through a wire, the inner surface of the equalizing ring is connected with a second connecting end of the sampling resistor, the first connecting end and the second connecting end of the sampling resistor are connected to one end of the cable in parallel, and the other end of the cable is connected to the input end of the measuring circuit;
determining a proportionality coefficient of the voltage value of the sampling resistor and the voltage value of the power transmission line to be tested;
and determining a voltage value U of the power transmission line to be tested according to the proportionality coefficient and the voltage value of the sampling resistor, wherein U is kU0, U0 is the voltage value of the sampling resistor, k is the proportionality coefficient, and U is the voltage value of the power transmission line to be tested.
Optionally, the obtaining of the proportional coefficient of the voltage value of the sampling resistor and the voltage value of the power transmission line to be measured specifically includes:
According to the method, a proportionality coefficient k of a sampling resistance voltage value and a voltage value of a power transmission line to be detected is determined, wherein R0 represents a sampling resistance value of the sampling resistance, f represents frequency, epsilon 0 represents dielectric constant of air, R represents radius of the power transmission line to be detected, S represents surface area of a metal sensing piece, and h represents height from the ground of the power transmission line.
according to the specific embodiment provided by the invention, the invention discloses the following technical effects:
the problems that when the voltage of the wire of the power transmission line is measured in the prior art, a voltage transformer is adopted, the size of the transformer is large, the manufacturing cost is high, the measurement is not flexible, the insulation requirement is high and the like are solved. The measuring device is small in size and low in cost. When the monitoring device is applied, the line voltage can be monitored in real time, monitored information can be sent to a transformer substation, when a line breaks down, the monitoring device can be accurately positioned in a certain span, so that workers are free from line patrol, and the monitoring device has important significance for inspection, maintenance and online state monitoring of a power transmission line.
Drawings
in order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.
fig. 1 is a schematic structural diagram of a voltage measuring device suitable for a power transmission line according to the present invention;
FIG. 2 is a schematic cross-sectional view of a grading ring in a measuring apparatus according to the present invention;
The system comprises a tower 1, a wireless transmitter or an electro-optical conversion module 2, a measurement circuit 3, a cable 4, an insulator 5, a grading ring 6 and a transmission line 7, wherein the tower 1 is a tower, the wireless transmitter or the electro-optical conversion module is a wireless transmitter or an electro-optical conversion module; 8 is a sampling resistor, 9 is a metal sensing sheet, 10 is an insulating film, 6-1 is a connecting rod, and 6-2 is a fixing ring.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
Fig. 1 is a schematic structural diagram of a voltage measuring device suitable for a power transmission line according to the present invention. As shown in fig. 1, the measuring apparatus includes: the device comprises a measuring circuit 3, a cable 4, an insulator 5, a grading ring 6, a sampling resistor (not marked in the figure), a metal sensing sheet (not marked in the figure), a wireless transmitter or an electro-optical conversion module 2 and a voltage display (not marked in the figure);
The power transmission line 7 to be tested is fixed on the tower 1 through the insulator 5, and the tower 1 is a support for supporting the power transmission line 7; the power transmission line 7 to be tested is fixed at the tail end of the insulator 5 through a hardware fitting at the tail end of the insulator 5;
The grading ring 6 is of an annular structure with a grading function and is arranged on a hardware fitting at the end part of the insulator through a fixing ring and a connecting rod; the equalizing ring 6 is connected with the input end of the measuring circuit 3 through a cable 4;
the sampling resistor 8 and the metal sensing sheet 9 are positioned in the grading ring 6; the metal sensing piece is a thin piece cut from the side surface of the grading ring 6, the metal sensing piece is adhered to the corresponding cutting surface through an adhesive, and the metal sensing piece is separated from the cutting surface of the grading ring 6 through an insulating film; the metal sensing piece is connected with a first connecting end of the sampling resistor through a wire, the inner surface of the equalizing ring 6 is connected with a second connecting end of the sampling resistor, the first connecting end and the second connecting end of the sampling resistor are connected to one end of the cable 4 in parallel, the other end of the cable 4 is connected out through the equalizing ring 6, and is connected to the input end of the measuring circuit 3 through the inside of the insulator 5 in a direct connection mode, and interference cannot be caused due to the fact that the pole tower 1 and the ground are equipotential. At this time, the measurement circuit 3 measures the voltage across the sampling resistor.
and the voltage display calculates and displays the voltage measured value of the power transmission line 7 according to the voltage value of the sampling resistor measured by the measuring circuit 3. The position of the voltage display can be placed at the receiving end according to actual requirements.
The output end of the measuring circuit 3 is wirelessly connected with the voltage display, and can transmit signals through the wireless transmitter 2 or the electro-optical conversion module (not shown). When the wireless transmitter 2 is used for transmitting signals, the output end of the measuring circuit is connected with the input end of the wireless transmitter 2, and the wireless transmitter 2 transmits the voltage value measured by the measuring circuit to the voltage display of the receiving end through the transmitted radio waves. When the electro-optical conversion module is used for transmitting signals, the output end of the measuring circuit is connected with the input end of the electro-optical conversion module, and the electro-optical conversion module converts electric signals of voltage values measured by the measuring circuit into optical signals through the ground wire composite optical cable and transmits the optical signals to the voltage display at the receiving end.
Fig. 2 is a schematic transverse cross-sectional view of a grading ring in the measuring device of the present invention. As shown in fig. 2, the grading ring is sleeved and fixed on a hardware fitting at the tail end of the insulator through a connecting rod 6-1 and a fixing ring 6-2.
the grading ring internally comprises a sampling resistor 8 and a metal sensing sheet 9; the metal sensing sheet 9 is a thin sheet cut from the side surface of the grading ring, the metal sensing sheet 9 is adhered to the corresponding cutting surface through an adhesive, and the metal sensing sheet 9 is separated from the cutting surface of the grading ring through an insulating film 10; the surface of the metal sensing piece 9 is connected with a first connecting end of a sampling resistor 8 in a grading ring through a wire, the inner surface of the grading ring is connected with a second connecting end of the sampling resistor, the first connecting end and the second connecting end of the sampling resistor are connected to one end of a cable 4 in parallel, and the other end of the cable 4 is connected out through the grading ring, passes through the inside of an insulator and is connected to the input end of a measuring circuit. The resistance range of the sampling resistor 8 in the grading ring is 0.1M omega-200M omega. The insulating film 10 is polytetrafluoroethylene or other insulating material.
according to the invention, the sampling resistor 8 and the metal sensing sheet 9 are arranged in the grading ring, so that external electromagnetic interference can be avoided, and meanwhile, the metal sensing sheet 9 is insulated from the side surface of the power transmission line through the insulating die 10.
By applying the measuring device, the invention also provides a voltage measuring method suitable for the power transmission line, which specifically comprises the following steps:
acquiring a voltage value of the sampling resistor measured by the measuring circuit;
determining a proportionality coefficient of the voltage value of the sampling resistor and the voltage value of the power transmission line to be tested;
and determining a voltage value U of the power transmission line to be tested according to the proportionality coefficient and the voltage value of the sampling resistor, wherein U is kU0, U0 is the voltage value of the sampling resistor, k is the proportionality coefficient, and U is the voltage value of the power transmission line to be tested.
Wherein, the proportional coefficient of the voltage value of the sampling resistor and the voltage value of the power transmission line to be measured is determined by adopting a formula,
and then the receiver calculates according to the size of the sampling resistance and obtains the proportionality coefficient and the phase difference, multiplies the voltage value of the sampling resistance by the proportionality coefficient, calculates and displays the voltage waveform of the transmission line, namely:
and determining the voltage value U of the power transmission line to be tested.
Wherein R0 represents the sampling resistance value of the sampling resistor, f represents the frequency, ε 0 represents the dielectric constant of air, R represents the radius of the power transmission line to be measured, S represents the surface area of the metal sensing sheet, and h represents the height of the power transmission line from the ground.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
the principles and embodiments of the present invention have been described herein using specific examples, which are provided only to help understand the method and the core concept of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.
Claims (5)
1. A voltage measurement device suitable for use in a power transmission line, the measurement device comprising: the device comprises an insulator, a grading ring, a sampling resistor, a metal sensing sheet, a measuring circuit and a voltage display;
The transmission line to be tested is fixed at the tail end of the insulator through the hardware fitting at the tail end of the insulator;
the equalizing ring is sleeved and fixed on a hardware fitting at the tail end of the insulator through a connecting rod and a fixing ring; the equalizing ring is connected with the input end of the measuring circuit through a cable; the grading ring comprises a sampling resistor and a metal sensing sheet, wherein the sampling resistor and the metal sensing sheet are both arranged in the grading ring; the metal sensing piece is a thin piece cut from the side surface of the grading ring, the metal sensing piece is adhered to the corresponding cutting surface through an adhesive, and the metal sensing piece is separated from the cutting surface of the grading ring through an insulating film; the metal sensing sheet is connected with a first connecting end of the sampling resistor through a wire, the inner surface of the equalizing ring is connected with a second connecting end of the sampling resistor, the first connecting end and the second connecting end of the sampling resistor are connected to one end of the cable in parallel, and the other end of the cable is connected to the input end of the measuring circuit;
The measuring circuit is used for measuring the voltage value of the sampling resistor inside the grading ring; the voltage display is positioned at a receiving end and used for calculating and displaying a voltage measurement value of the power transmission line to be measured according to the voltage value of the sampling resistor inside the grading ring;
Determining a proportional coefficient between the voltage value of the sampling resistor and the voltage value of the power transmission line to be detected; the method specifically comprises the following steps: according to the method, a proportionality coefficient k of a sampling resistance voltage value and a voltage value of a power transmission line to be detected is determined, wherein R0 represents a sampling resistance value of the sampling resistance, f represents frequency, epsilon 0 represents a dielectric constant of air, R represents a radius of the power transmission line to be detected, S represents a surface area of a metal sensing sheet, and h represents a ground height of the power transmission line;
and determining a voltage value U of the power transmission line to be tested according to the proportionality coefficient and the voltage value of the sampling resistor, wherein U is kU0, U0 is the voltage value of the sampling resistor, k is the proportionality coefficient, and U is the voltage value of the power transmission line to be tested.
2. The measurement device of claim 1, further comprising: a wireless transmitter or an electro-optic conversion module;
the output end of the measuring circuit is connected with the input end of the wireless transmitter, and the wireless transmitter transmits the voltage value measured by the measuring circuit to a voltage display of a receiving end through the transmitted radio waves;
or the output end of the measuring circuit is connected with the input end of the electro-optical conversion module, and the electro-optical conversion module converts the electric signal of the voltage value measured by the measuring circuit into an optical signal through a ground wire composite optical cable and transmits the optical signal to a voltage display at a receiving end.
3. The measuring device according to claim 1, wherein the resistance value of the sampling resistor inside the grading ring ranges from 0.1M Ω to 200M Ω.
4. the measurement device of claim 1, wherein the insulating film is a polytetrafluoroethylene insulating material.
5. A voltage measurement method suitable for a power transmission line is characterized by comprising the following steps:
Acquiring a voltage value of a sampling resistor measured by a measuring circuit in a measuring device; the measuring device includes: the device comprises an insulator, a grading ring, a sampling resistor, a metal sensing sheet, a measuring circuit and a voltage display; the transmission line to be tested is fixed on a tower through the insulator, and the transmission line to be tested is fixed on the insulator through a hardware fitting at the tail end of the insulator; the equalizing ring is sleeved and fixed on a hardware fitting at the tail end of the insulator through a connecting rod and a fixing ring; the equalizing ring is connected with the input end of the measuring circuit through a cable; the grading ring comprises a sampling resistor and a metal sensing sheet, wherein the sampling resistor and the metal sensing sheet are both arranged in the grading ring; the metal sensing piece is a thin piece cut from the side surface of the grading ring, the metal sensing piece is adhered to the corresponding cutting surface through an adhesive, and the metal sensing piece is separated from the cutting surface of the grading ring through an insulating film; the metal sensing sheet is connected with a first connecting end of the sampling resistor through a wire, the inner surface of the equalizing ring is connected with a second connecting end of the sampling resistor, the first connecting end and the second connecting end of the sampling resistor are connected to one end of the cable in parallel, and the other end of the cable is connected to the input end of the measuring circuit;
Determining a proportionality coefficient of the voltage value of the sampling resistor and the voltage value of the power transmission line to be tested; the method specifically comprises the following steps: according to
determining a proportionality coefficient k of a voltage value of a sampling resistor and a voltage value of a power transmission line to be tested, wherein R0 represents a sampling resistance value of the sampling resistor, f represents frequency, epsilon 0 represents a dielectric constant of air, R represents a radius of the power transmission line to be tested, S represents a surface area of a metal sensing sheet, and h represents a ground height of the power transmission line;
And determining a voltage value U of the power transmission line to be tested according to the proportionality coefficient and the voltage value of the sampling resistor, wherein U is kU0, U0 is the voltage value of the sampling resistor, k is the proportionality coefficient, and U is the voltage value of the power transmission line to be tested.
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| CN201810563109.4A CN108593997B (en) | 2018-06-04 | 2018-06-04 | Voltage measuring device and method suitable for power transmission line |
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| CN201810563109.4A CN108593997B (en) | 2018-06-04 | 2018-06-04 | Voltage measuring device and method suitable for power transmission line |
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| CN112034235B (en) * | 2020-09-07 | 2023-06-27 | 广东电网有限责任公司广州供电局 | Device and method suitable for power frequency voltage measurement of cable T-shaped connector |
| CN112946343B (en) * | 2021-01-29 | 2022-12-02 | 华北电力大学 | Overhead line power frequency voltage measuring device and measuring method |
| CN114047386A (en) * | 2021-10-29 | 2022-02-15 | 中国南方电网有限责任公司超高压输电公司贵阳局 | Equalizing ring surface electric field intensity measuring device and equalizing ring system |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2173378Y (en) * | 1993-09-08 | 1994-08-03 | 王宁亨 | Phoneme circuit device for refrigerator |
| CN101094334A (en) * | 2006-06-23 | 2007-12-26 | 乐金电子（南京）等离子有限公司 | Device and method for automatic adjusting resistance in electronic apparatus |
| CN101299385A (en) * | 2008-03-14 | 2008-11-05 | 国网武汉高压研究院 | Electron type current transformer for ultrahigh voltage transmission lines and corona loss measurement device thereof |
| CN101706528A (en) * | 2009-12-07 | 2010-05-12 | 上海交通大学 | Insulator voltage online measurement sensor for power transmission line |
| CN102508036A (en) * | 2011-11-02 | 2012-06-20 | 浙江大学城市学院 | On-line remote monitoring method and device for pollution state of disk insulator |
| CN102946199A (en) * | 2012-11-09 | 2013-02-27 | 联合汽车电子有限公司 | Direct current insulation buck converter and matrix voltage detection circuit thereof |
| CN104965111A (en) * | 2015-05-25 | 2015-10-07 | 三峡大学 | Power transmission and distribution line voltage on-line measurement system based on pincerlike coaxial capacitor |
| CN106443206A (en) * | 2016-10-24 | 2017-02-22 | 广州供电局有限公司 | Measurement method and measurement device of electric field intensity at high-voltage wire surface |
| CN106885934A (en) * | 2017-03-09 | 2017-06-23 | 华北电力大学 | A kind of bus voltage measurement device set up in three-phase integrated GIS tank bodies blind end |
| CN106932631A (en) * | 2017-03-09 | 2017-07-07 | 华北电力大学 | A kind of bus voltage measurement device set up in single-phase GIS tank bodies blind end |
| CN107064600A (en) * | 2017-03-09 | 2017-08-18 | 华北电力大学 | A kind of GIS bus voltage measurement devices set up in low-pressure tank body side surface |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5979548B2 (en) * | 2012-11-09 | 2016-08-24 | 国立研究開発法人産業技術総合研究所 | CURRENT SENSOR TERMINAL WITH WIRELESS TRANSMITTING FUNCTION, WIRELESS TRANSMITTING METHOD, AND WIRELESS TRANSMITTING / RECEIVING SYSTEM |
-
2018
- 2018-06-04 CN CN201810563109.4A patent/CN108593997B/en not_active Expired - Fee Related
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2173378Y (en) * | 1993-09-08 | 1994-08-03 | 王宁亨 | Phoneme circuit device for refrigerator |
| CN101094334A (en) * | 2006-06-23 | 2007-12-26 | 乐金电子（南京）等离子有限公司 | Device and method for automatic adjusting resistance in electronic apparatus |
| CN101299385A (en) * | 2008-03-14 | 2008-11-05 | 国网武汉高压研究院 | Electron type current transformer for ultrahigh voltage transmission lines and corona loss measurement device thereof |
| CN101706528A (en) * | 2009-12-07 | 2010-05-12 | 上海交通大学 | Insulator voltage online measurement sensor for power transmission line |
| CN102508036A (en) * | 2011-11-02 | 2012-06-20 | 浙江大学城市学院 | On-line remote monitoring method and device for pollution state of disk insulator |
| CN102946199A (en) * | 2012-11-09 | 2013-02-27 | 联合汽车电子有限公司 | Direct current insulation buck converter and matrix voltage detection circuit thereof |
| CN104965111A (en) * | 2015-05-25 | 2015-10-07 | 三峡大学 | Power transmission and distribution line voltage on-line measurement system based on pincerlike coaxial capacitor |
| CN106443206A (en) * | 2016-10-24 | 2017-02-22 | 广州供电局有限公司 | Measurement method and measurement device of electric field intensity at high-voltage wire surface |
| CN106885934A (en) * | 2017-03-09 | 2017-06-23 | 华北电力大学 | A kind of bus voltage measurement device set up in three-phase integrated GIS tank bodies blind end |
| CN106932631A (en) * | 2017-03-09 | 2017-07-07 | 华北电力大学 | A kind of bus voltage measurement device set up in single-phase GIS tank bodies blind end |
| CN107064600A (en) * | 2017-03-09 | 2017-08-18 | 华北电力大学 | A kind of GIS bus voltage measurement devices set up in low-pressure tank body side surface |
Non-Patent Citations (1)
| Title |
|---|
| 传输线残余电荷放电响应模型的研究;卢斌先 等;《电网技术》;20120405(第4期);全文 * |
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