CN107064600B - A kind of GIS bus voltage measurement device established in low-pressure tank body side surface - Google Patents
A kind of GIS bus voltage measurement device established in low-pressure tank body side surface Download PDFInfo
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- CN107064600B CN107064600B CN201710137042.3A CN201710137042A CN107064600B CN 107064600 B CN107064600 B CN 107064600B CN 201710137042 A CN201710137042 A CN 201710137042A CN 107064600 B CN107064600 B CN 107064600B
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- tank body
- outer tank
- square piece
- voltage
- resistance
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- 238000005259 measurement Methods 0.000 title claims abstract description 37
- 239000002184 metal Substances 0.000 claims abstract description 60
- 229910052751 metal Inorganic materials 0.000 claims abstract description 60
- 239000004020 conductor Substances 0.000 claims abstract description 25
- 230000005611 electricity Effects 0.000 claims description 9
- 238000009413 insulation Methods 0.000 claims description 4
- 239000004952 Polyamide Substances 0.000 claims 1
- 229920002647 polyamide Polymers 0.000 claims 1
- 230000005540 biological transmission Effects 0.000 abstract description 25
- 238000012544 monitoring process Methods 0.000 abstract description 10
- 239000007789 gas Substances 0.000 description 18
- 238000010586 diagram Methods 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 4
- 229920003223 poly(pyromellitimide-1,4-diphenyl ether) Polymers 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 230000004323 axial length Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000011897 real-time detection Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Classifications
-
- 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
Abstract
The invention discloses a kind of GIS bus voltage measurement devices established in low-pressure tank body side surface, which includes metal sensor square piece, gas insulated combined electrical equipment, resistance, cable, manograph and voltage display；Wherein, gas insulated combined electrical equipment includes the high-pressure conductor and outer tank body with cylindrical structure；Metal sensor square piece is a part cut down from the side surface of outer tank body, and before measuring voltage, is pasted the incision in outer tank body side surface；One end of resistance connects metal sensor square piece, and the other end connects outer tank body；One terminating resistor of cable, another termination manograph；Voltage display connects manograph, for high-pressure conductor to be calculated and be shown to the voltage value of outer tank body.Therefore, using voltage measuring apparatus provided by the invention, it can obtain high-pressure conductor in gas insulated combined electrical equipment by measuring resistive voltage and the purpose of the operating status of real-time monitoring ultra-high-tension power transmission line is realized to the voltage value of outer tank body.
Description
Technical field
The present invention relates to field of power systems, more particularly to a kind of GIS bus electricity established in low-pressure tank body side surface
Pressure measuring device.
Background technique
Safety power transmission, reliable transmission of electricity, economic electric transmission are present main trends, and under the promotion of this main trend, defeated
The continuous development of power technology, the scale of power grid constantly expands, the voltage class of electric system constantly increases, and especially extra-high voltage is handed over
The molding and innovation of direct current mixing field of power transmission technology.
Currently, China has successfully had developed 1000kV exchange and ± 800kV direct current hybrid power system, promote China
Enter the new stage of UHV transmission.But while entering the new stage of UHV transmission, real-time monitoring electric power is also given
The operating status of system and the maintenance of power equipment increase difficulty.So how to be monitored in real time in transmission line of electricity operation
Its state is just particularly important.The state letter of transmission line of electricity wherein can be accurately extracted in higher and higher voltage class
Breath is even more the most important thing.
In the prior art, often through the voltage of voltage transformer monitoring ultra-high-tension power transmission line, with real-time detection power train
The operating status of system.However, being voltage of the substantive voltage transformer in monitoring ultra-high-tension power transmission line with transformer, exist very much
Problem, such as traditional electromagnetic type and capacitance type potential transformer, due to the reason of interpolation iron core, secondary side in use cannot
Short circuit will appear magnetic hysteresis and magnetic saturation in iron core, and then result in that the measurement linearity is low, static and dynamic true scope is small, wink
The problems such as state error characteristics are undesirable；In substation isolating-switch operating process, electromagnetic type and capacitance type mutual inductor are easy to draw
Send out failure.There is the stabilization of the limitation of crystal half-wave voltage, light source stability, optical device connection in electronic mutual inductor
The problems such as offset of property, optical transmission loss and intrinsic standoff ratio, a sensing arrangement and in terms of there are significant deficiency,
It is easy to cause serious measurement error.In addition voltage transformer is big with transformer figure, involves great expense, maintenance and repair expense
The common faults such as high, measurement is not flexible, big, the insulating requirements height of loss.Therefore, it is badly in need of a kind of completely new device, is abandoning mutual induction of voltage
On the basis of device, voltage value when ultra-high-tension power transmission line operation, and then the operation of real-time monitoring ultra-high-tension power transmission line can be obtained
State.
Summary of the invention
The object of the present invention is to provide a kind of GIS bus voltage measurement devices established in low-pressure tank body side surface, are
On the basis of abandoning conventional voltage transformer, by simple voltage measuring apparatus, measure in gas insulated combined electrical equipment
High-pressure conductor to the voltage value of outer tank body, and then obtain voltage value when ultra-high-tension power transmission line operation, realize that real-time monitoring is high
The purpose of the operating status of pressure transmission line.
To achieve the above object, the present invention provides following schemes:
A kind of GIS bus voltage measurement device established in low-pressure tank body side surface, the GIS bus voltage measurement device
It include: metal sensor square piece, gas insulated combined electrical equipment, resistance, cable, manograph and voltage display；The gas is exhausted
Edge combined electrical apparatus includes the high-pressure conductor and outer tank body with cylindrical structure；The outer tank body is the gas insulated combined electrical equipment
Metal shell；The high-pressure conductor is located at the inside of the gas insulated combined electrical equipment；The outer tank body include side surface and
Closed end；
Wherein, the metal sensor square piece is a part cut down from the side surface of the outer tank body, and is being surveyed
Before measuring voltage, the metal sensor square piece is pasted into the incision in the side surface；
One end of the resistance connects the metal sensor square piece, and the other end of the resistance connects the outer tank body, and
Described cable one end is connected with the resistance；
The manograph connects the other end of the cable, for obtaining resistive voltage value；
The voltage display connects the manograph, for showing high-pressure conductor to the voltage value of outer tank body.
Optionally, the metal sensor square piece is separated by insulation film and the side surface, for the metal that insulate
Sense square piece and the outer tank body.
Optionally, the insulation film is Kapton or other insulating materials.
Optionally, the gas insulated combined electrical equipment is cylindrical body, and is placed horizontally at the pallet apart from ground h meters of height
On.
Optionally, the Standard resistance range of the resistance is 0.1M Ω~200M Ω.
Optionally, the cable is coaxial cable.
Optionally, described device further includes metal shielding box；The metal shielding box is mounted on the side surface, makes
The resistance and the metal sensor square piece are mounted between the metal shielding box and the side surface, are isolated from the outside world；Institute
Metal shielding box is stated, for shielding outside electromagnetic interference.
The specific embodiment provided according to the present invention, the invention discloses following technical effects:
It is provided by the invention that the invention discloses a kind of GIS bus voltage measurement dresses established in low-pressure tank body side surface
Set, the GIS bus voltage measurement device include metal sensor square piece, gas insulated combined electrical equipment, resistance, cable, manograph with
And voltage display；Wherein, gas insulated combined electrical equipment includes high-pressure conductor and outer tank body；Metal sensor square piece is from outer tank body
A part for cutting down of side surface metal sensor square piece is pasted into the notch in side surface and before measuring voltage
Place；One end of resistance connects metal sensor square piece, and the other end connects outer tank body；One terminating resistor of cable, the other end and manograph
It is connected；The manograph other end connects voltage display, for high-pressure conductor to be calculated and be shown to the voltage value of outer tank body.Therefore,
Using GIS bus voltage measurement device provided by the invention, gas-insulated combination can be obtained by the voltage value of measurement resistance
High-pressure conductor is to the voltage value of outer tank body in electric appliance, and then obtains voltage value when ultra-high-tension power transmission line operation, realizes prison in real time
Survey the purpose of the operating status of ultra-high-tension power transmission line.
In addition, solving compared with prior art, the present invention having abandoned voltage transformer in real-time monitoring high voltage transmission line
When the operating status on road, voltage transformer is used, and transformer figure is big, involves great expense, maintenance and repair expense in the presence of having
Height, measurement is not flexible, the problems such as big, insulating requirements are high is lost.
Detailed description of the invention
It in order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, below will be to institute in embodiment
Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the invention
Example, for those of ordinary skill in the art, without any creative labor, can also be according to these attached drawings
Obtain other attached drawings.
Fig. 1 is GIS bus voltage measurement apparatus structure schematic diagram of the foundation of the embodiment of the present invention in low-pressure tank body side surface；
Fig. 2 is that foundation of the embodiment of the present invention is shown in the GIS bus voltage measurement device connection relationship of low-pressure tank body side surface
It is intended to；
Fig. 3 is GIS bus voltage measurement device longitudinal sectional drawing of the foundation of the embodiment of the present invention in low-pressure tank body side surface；
Fig. 4 is GIS bus voltage measurement device lateral sectional view of the foundation of the embodiment of the present invention in low-pressure tank body side surface；
Fig. 5 is that foundation of the embodiment of the present invention is longitudinally cutd open in the GIS bus voltage measurement device part of low-pressure tank body side surface
Face figure.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
The object of the present invention is to provide a kind of GIS bus voltage measurement device established in low-pressure tank body side surface, energy
The operating status of enough real-time monitoring gas insulated transformer substation high voltage bus.
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, with reference to the accompanying drawing and specific real
Applying mode, the present invention is described in further detail.
Fig. 1 is GIS bus voltage measurement apparatus structure schematic diagram of the foundation of the embodiment of the present invention in low-pressure tank body side surface,
Fig. 2 is GIS bus voltage measurement device connection relationship diagram of the foundation of the embodiment of the present invention in low-pressure tank body side surface；Fig. 3
The GIS bus voltage measurement device longitudinal sectional drawing in low-pressure tank body side surface is established for the embodiment of the present invention；Fig. 4 is the present invention
Embodiment establishes the GIS bus voltage measurement device lateral sectional view in low-pressure tank body side surface；Fig. 5 builds for the embodiment of the present invention
Found the GIS bus voltage measurement device partial longitudinal section in low-pressure tank body side surface.As shown in Figure 1, provided by the invention
A kind of GIS bus voltage measurement device established in low-pressure tank body side surface, comprising: metal sensor square piece 101, gas-insulated group
Close electric appliance 102, resistance 103, cable 104, manograph 105 and voltage display 106；Fig. 2 is that the embodiment of the present invention is specifically electric
Pressure measuring device connection relationship diagram, as shown in Fig. 2, including metal sensor square piece 101, gas insulated combined electrical equipment 102, electricity
Hinder 103, cable 104, manograph 105, insulating layer 203；Wherein, gas insulated combined electrical equipment 102 includes high-pressure conductor 201 and outer
Tank body 202；As shown in figure 3, including high-pressure conductor 201, outer tank body 202, metal sensor square piece 101；As shown in figure 4, including height
Press conductor 201, outer tank body 202, metal sensor square piece 101 and metal shielding box 401；As shown in figure 5, including resistance 103, gold
Belong to shielding box 401, cable 104.
The gas insulated combined electrical equipment 102 includes the high-pressure conductor 201 and outer tank body 202 with cylindrical structure；It is described
Outer tank body 202 is the metal shell of the gas insulated combined electrical equipment 102；The high-pressure conductor 201 is located at the gas-insulated
The inside of combined electrical apparatus 102；The outer tank body 202 includes side surface and closed end；The metal sensor square piece 101 is from described
A part that 202 side surface of outer tank body is cut down, and before measuring voltage, the metal sensor square piece 101 is pasted
Incision in 202 side surface of outer tank body；One end of the resistance 103 connects the metal sensor square piece 101, the electricity
The other end of resistance 103 connects the outer tank body 202, and 104 one end of the cable connects the resistance 103；The manograph 105
The other end for connecting the cable 104, for obtaining resistive voltage value；The voltage display 106 connects the manograph
105, for high-pressure conductor to be calculated and be shown to the voltage value of outer tank body according to the resistive voltage value.
The metal sensor square piece 101 is separated by insulating layer 203 and 202 side surface of outer tank body, for preventing
It states metal sensor square piece 101 and the outer tank body 202 is powered.
The insulating layer 203 is Kapton or other insulating materials.
The gas insulated combined electrical equipment 102 is cylindrical body, and is placed horizontally on the pallet apart from ground h meters of height,
And it is grounded.
The Standard resistance range of the resistance 103 is 0.1M Ω~200M Ω.
The cable 104 is coaxial cable.
The device further includes metal shielding box 401；The metal shielding box 401 is mounted on the 202 side table of outer tank body
Face makes the resistance 103 and the metal sensor square piece 101 be mounted on the metal shielding box and the 202 side table of outer tank body
Between face, it is isolated from the outside world；The metal shielding box 401, for shielding outside electromagnetic interference.
In order to preferably enable the above objects, features and advantages of the present invention more obvious and easy to understand, below by substep
The rapid manufacturing process to disclose voltage measuring apparatus, specially
Step 1: cutting down a metal sensor square piece in the side surface of outer tank body 202 first before measurement voltage
101, in side surface, incision coats Kapton, and metal sensor square piece 101 is pasted and is cut in the side surface of outer tank body 202
At mouthful；In side surface, incision coats Kapton, for preventing metal sensor square piece and outer tank body to be powered.
Step 2: one end of resistance 103 is connected metal sensor square piece 101, the other end connects outer tank body 202, and electricity consumption
The resistance 103 in parallel of cable 104.
Step 3: voltage display 106 connects manograph 105 by 105 connecting cable 104 of manograph.
After gas insulated combined electrical equipment 102 is powered, manograph 105 can obtain the voltage value of resistance 103 and by its voltage
Value is sent to voltage display 106；Then high-pressure conductor is calculated and be shown to outer tank according to this voltage value in voltage display 106
The voltage value of body.
Wherein, voltage display 106 is the voltage value for determining high-pressure conductor to outer tank body according to formula (1), formula (1)
Are as follows:
Wherein, U2Indicate the voltage value of high-pressure conductor, U1Resistive voltage value, R indicate resistance value, and f indicates frequency, ε0It indicates
The Gases dielectric constant of gas insulated combined electrical equipment, r1Indicate high-pressure conductor radius, r2Indicate that outer tank body radius, p indicate that metal passes
Feel the circumferential lengths of square piece, l indicates the axial length of metal sensor square piece.
The present invention obtains resistive voltage value, according to this voltage value, measures high pressure and lead by simply measuring voltage device
Body obtains voltage value when ultra-high-tension power transmission line operation to the voltage value of outer tank body, reaches real-time monitoring high voltage transmission line
The purpose of the operating status on road.And measuring device provided in this embodiment, it is mounted on the lateral surface of outer tank body, when surveying pressure, is not necessarily to
Other operations, can directly survey pressure；It is small in size, it is at low cost, it will not break down because of isolator operation.In addition, will survey
Pressure device is mounted on the lateral surface of outer tank body, does not influence the inspection and maintenance of gas insulated combined electrical equipment, simplifies gas-insulated
The body design of combined electrical apparatus.
Voltage value on high voltage transmission line can be accurately obtained in order to verify the voltage measuring apparatus of offer of the invention,
Current following embodiment proves.
Embodiment one
Applying crest voltage in high-pressure conductor 201 is 50kV (voltage value i.e. on high voltage transmission line is 50kV), and high pressure is led
The diameter of body 201 is 110mm, overall diameter 130mm, length 800mm；The diameter of outer tank body 202 is 317mm, and overall diameter is
325mm, length 500mm；The selection of resistance 103 is related with the area of metal sensor square piece, actual conditions；In order to facilitate survey
Amount, can set measurement resistance value according to high voltage bus voltage.If the voltage of resistance 103 is that 1V is optimal, different resistance values are corresponding
Metal sensor square piece area, as shown in table 1；Different metal senses the corresponding resistance value of area of square piece, as shown in table 2.
1 resistive voltage of table is the area of the corresponding metal sensor square piece of different resistance values under the conditions of 1V
Different metal senses the corresponding resistance value of area of square piece under the conditions of 2 resistive voltage of table is 1V
First group of data in table 1 are chosen, i.e. the resistance value of resistance 103 is 0.1M Ω, and the circumferential p of metal sensor square piece is
101.68mm, axial l are 100mm, the measurement voltage value U of metal sensor square piece1It can be calculated for 1V by formula (1), it is high
Press the voltage value U of conductor2For 49.89kV, for measurement accuracy up to 99.78%, phase angle error is 0.155 degree.Therefore, pass through this
Embodiment can verify the present invention and provide a kind of voltage measuring apparatus based on GIS low-pressure tank body side surface, can accurately obtain
Voltage value when ultra-high-tension power transmission line being taken to run, and can be realized the purpose of the operating status of real-time monitoring ultra-high-tension power transmission line.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other
The difference of embodiment, the same or similar parts in each embodiment may refer to each other.
Used herein a specific example illustrates the principle and implementation of the invention, and above embodiments are said
It is bright to be merely used to help understand method and its core concept of the invention；At the same time, for those skilled in the art, foundation
Thought of the invention, there will be changes in the specific implementation manner and application range.In conclusion the content of the present specification is not
It is interpreted as limitation of the present invention.
Claims (6)
1. a kind of GIS bus voltage measurement device established in low-pressure tank body side surface, which is characterized in that the GIS bus electricity
Pressure measuring device includes: metal sensor square piece, gas insulated combined electrical equipment, resistance, cable, manograph and voltage display；
The gas insulated combined electrical equipment includes the high-pressure conductor and outer tank body with cylindrical structure；The outer tank body is that the gas is exhausted
The metal shell of edge combined electrical apparatus；The high-pressure conductor is located at the inside of the gas insulated combined electrical equipment；The outer tank body packet
Include side surface and closed end；
Wherein, the metal sensor square piece is a part cut down from the side surface of the outer tank body, and in measurement electricity
Before pressure, the metal sensor square piece is pasted into the incision in the side surface；
One end of the resistance connects the metal sensor square piece, and the other end of the resistance connects the outer tank body, and described
Cable one end is connected with the resistance；
The manograph connects the other end of the cable, for obtaining resistive voltage value；
The voltage display connects the manograph, for showing high-pressure conductor to the voltage value of outer tank body；
The metal sensor square piece is separated by insulation film and the side surface, for the metal sensor square piece and the institute of insulating
State outer tank body.
2. GIS bus voltage measurement device according to claim 1, which is characterized in that the insulation film is that polyamides is sub-
Amine film.
3. GIS bus voltage measurement device according to claim 1, which is characterized in that the gas insulated combined electrical equipment
For cylindrical body, and it is placed horizontally on the pallet apart from ground h meters of height.
4. GIS bus voltage measurement device according to claim 1, which is characterized in that the Standard resistance range of the resistance is
0.1M Ω~200M Ω.
5. GIS bus voltage measurement device according to claim 1, which is characterized in that the cable is coaxial cable.
6. GIS bus voltage measurement device according to claim 1, which is characterized in that described device further includes metal screen
Cover box；The metal shielding box is mounted on the side surface, is mounted on the resistance and the metal sensor square piece described
Between metal shielding box and the side surface, it is isolated from the outside world；The metal shielding box, for shielding outside electromagnetic interference.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201710137042.3A CN107064600B (en) | 2017-03-09 | 2017-03-09 | A kind of GIS bus voltage measurement device established in low-pressure tank body side surface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201710137042.3A CN107064600B (en) | 2017-03-09 | 2017-03-09 | A kind of GIS bus voltage measurement device established in low-pressure tank body side surface |
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| Publication Number | Publication Date |
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| CN107064600A CN107064600A (en) | 2017-08-18 |
| CN107064600B true CN107064600B (en) | 2019-08-23 |
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| CN201710137042.3A Expired - Fee Related CN107064600B (en) | 2017-03-09 | 2017-03-09 | A kind of GIS bus voltage measurement device established in low-pressure tank body side surface |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108872676B (en) * | 2018-06-04 | 2019-08-27 | 华北电力大学 | A kind of substation bus bar duplex frequency voltage measuring device |
| CN108593997B (en) * | 2018-06-04 | 2019-12-06 | 华北电力大学 | Voltage measuring device and method suitable for power transmission line |
| CN110542777B (en) * | 2019-09-29 | 2020-08-14 | 华北电力大学 | Three-phase integrated GIS independent bus voltage measuring device |
| CN110596553A (en) * | 2019-10-10 | 2019-12-20 | 华北电力大学 | Transformer on-line monitoring measuring device |
| CN111089999B (en) * | 2020-02-10 | 2021-04-13 | 华北电力大学 | Parallel AC high-voltage line voltage measuring device and method |
| CN111273070B (en) * | 2020-02-10 | 2021-03-23 | 华北电力大学 | Tandem type alternating-current high-voltage bus measuring device and method |
| CN111190086A (en) * | 2020-03-11 | 2020-05-22 | 华北电力大学 | GIS partial discharge on-line monitoring device |
| 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 |
| CN112904253B (en) * | 2021-01-15 | 2021-11-23 | 华北电力大学 | Electronic measuring device with temperature self-calibration function |
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| CN2613764Y (en) * | 2003-04-23 | 2004-04-28 | 高丹丘 | Voltage sensor for measuring bus voltage of closed composite electric appliances |
| CN101382568A (en) * | 2008-10-24 | 2009-03-11 | 陕西电力科学研究院 | Optical fiber type voltage measurement method and measuring set thereof |
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- 2017-03-09 CN CN201710137042.3A patent/CN107064600B/en not_active Expired - Fee Related
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|---|---|---|---|---|
| CN2613764Y (en) * | 2003-04-23 | 2004-04-28 | 高丹丘 | Voltage sensor for measuring bus voltage of closed composite electric appliances |
| CN101382568A (en) * | 2008-10-24 | 2009-03-11 | 陕西电力科学研究院 | Optical fiber type voltage measurement method and measuring set thereof |
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| Title |
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| GIS三相同壳母线VFT相电压测量系统;邹建华等;《中国电机工程学报》;20010430;第23卷(第4期);第11-14、43页 |
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