CN102751062B - The Overvoltage suppressing resistance of charged access high voltage bus verifying attachment and the system of selection of suppression resistance - Google Patents
The Overvoltage suppressing resistance of charged access high voltage bus verifying attachment and the system of selection of suppression resistance Download PDFInfo
- Publication number
- CN102751062B CN102751062B CN201210237954.5A CN201210237954A CN102751062B CN 102751062 B CN102751062 B CN 102751062B CN 201210237954 A CN201210237954 A CN 201210237954A CN 102751062 B CN102751062 B CN 102751062B
- Authority
- CN
- China
- Prior art keywords
- resistance
- insulated tube
- high voltage
- verifying attachment
- voltage bus
- 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.)
- Active
Links
- 230000001629 suppression Effects 0.000 title claims abstract description 17
- 238000013016 damping Methods 0.000 claims abstract description 10
- 230000001052 transient effect Effects 0.000 claims abstract description 10
- 239000003990 capacitor Substances 0.000 claims description 8
- 230000000694 effects Effects 0.000 claims description 5
- 239000007788 liquid Substances 0.000 abstract description 9
- 239000002184 metal Substances 0.000 abstract description 7
- 238000007789 sealing Methods 0.000 abstract description 6
- 238000010891 electric arc Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 12
- 241000209094 Oryza Species 0.000 description 2
- 235000007164 Oryza sativa Nutrition 0.000 description 2
- 239000012153 distilled water Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 235000009566 rice Nutrition 0.000 description 2
- 239000005341 toughened glass Substances 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
Landscapes
- Measurement Of Resistance Or Impedance (AREA)
Abstract
The invention discloses a kind of charged Overvoltage suppressing resistance of access high voltage bus verifying attachment and the system of selection of Overvoltage suppressing resistance, described suppression resistance includes insulated tube, the splendid attire conducting liquid in insulated tube, metal electrode is connected with at the two ends of insulated tube, this electrode links up the interior or exterior space of insulated tube, is provided with and prevents conducting liquid from the sealing device overflowed between the two between metal electrode and insulated tube.Suppression resistance of the present invention and selecting method thereof can play the effectiveness well eliminating electric arc, and access and disconnection moment only produce slight arc light.Transient state action time very short (in 1 ~ 2 microsecond), the transient voltage that access or disconnection produce instantaneously can not cause dampening exterior surface flashover, greatly save overall dimension and the weight of damping resistance, saved space, greatly simplified structure again, reduced cost.
Description
Technical field
The present invention relates to a kind of verifying attachment of charged access high voltage bus, particularly the Overvoltage suppressing resistance of charged access high voltage bus verifying attachment and the system of selection of suppression resistance.
Background technology
At the scene in high voltage test, the application of metering School Affairs insulating monitoring, sometimes need to provide busbar voltage phase place and magnitude parameters accurately, this parameter may be used for accurate determining apparatus insulation status.But the instrument transformer of on-the-spot application, usually due to a variety of causes such as accuracy class, load, ageing of performance, increases the error of instrument transformer, have impact on certainty of measurement.Existing instrument transformer accuracy test all needs to have a power failure and detects, charged demarcation cannot be realized, cause the accuracy cannot assessing instrument transformer secondary voltage in time, if error is larger, can directly cause the inaccurate of insulated on-line monitoring data, erroneous judgement is occurred to the insulation situation of converting equipment.The mode of employing standard capacitor dividing potential drop is acknowledged as the most effectively, the most reliable mode.But the instrument transformer at scene is all generally in operation, be generally difficult to carry out power failure to carry out stated accuracy.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art part, and provide a kind of and realize charged instrument transformer inspection of carrying out, and can prevent verifying attachment from producing dangerous superpotential suppression resistance when charged access high voltage bus.
The present invention is also the system of selection of the suppression resistance of the anti-overvoltage providing the charged access high voltage bus of verifying attachment.
A kind of Overvoltage suppressing resistance of charged access high voltage bus verifying attachment, its structural feature is: described suppression resistance includes insulated tube, the splendid attire conducting liquid in insulated tube, metal electrode is connected with at the two ends of insulated tube, this electrode links up the interior or exterior space of insulated tube, is provided with and prevents conducting liquid from the sealing device overflowed between the two between metal electrode and insulated tube.
Overvoltage suppressing resistance of the present invention is added in charged access high voltage bus verifying attachment, like this when carrying out mutual inductor on site calibration check, do not needing in too large physical dimension situation, enough dampings can be obtained again, in charged access with when disconnecting bus-bars conductor, damping resistance upper end electrode first carries out arc discharge with high-voltage conducting wires, plays the effective effect suppressing temporary overvoltage.
Described conducting liquid is water.
Resistivity of water is selected at 10 ~ 100 Europe rice.
Adopt the water of this resistivity can ensure to have good damping.
Described water or be running water, or for be mixed by running water and distilled water.
The caliber of described insulated tube is 1 ~ 3cm.
While guarantee suppresses resistance to have enough dampings, can not need too large physical dimension again.
Described insulated tube or be toughened glass pipe or for plastic tube.
The insulated tube length optional 15 ~ 20cm of the general 110kV grade of length of insulated tube, 220kV grade can select 20 ~ 30cm.
The system of selection of the suppression resistance of described charged access high voltage bus verifying attachment, first to ensure that the measuring circuit of charged access high voltage bus verifying attachment is in overdamping state, voltage waveform on standard capacitor in measuring circuit is nonoscillating exponential waveform, substantially overshoot phenomenon is not had, secondly avoid again suppressing the resistance of resistance too high, the too high meeting of resistance makes transient state extend discharge time, cause suppressing ohmically voltage long for action time, resistive surface is made easily flashover to occur, do not have due damping and suppress transient state effect, described suppression resistance value range of choice exists
between, in formula, L is the equivalent inductance in loop, and C is the equivalent capacitance of capacitor.
Resistance is suppressed to exist
in scope, better resultant effect can be obtained.
In sum, the present invention's following advantage compared to existing technology:
Suppression resistance of the present invention and selecting method thereof can play the effectiveness well eliminating electric arc, and access and disconnection moment only produce slight arc light.Transient state action time very short (in 1 ~ 2 microsecond), the transient voltage that access or disconnection produce instantaneously can not cause dampening exterior surface flashover, greatly save overall dimension and the weight of damping resistance, saved space, greatly simplified structure again, reduced cost.
Accompanying drawing explanation
Fig. 1 is the structural representation of the Overvoltage suppressing resistance of charged access high voltage bus verifying attachment of the present invention.
Label declaration 1 insulated tube 2 conducting liquid 3 metal electrode 4 sealing device.
Embodiment
Below in conjunction with embodiment, the present invention is described in more detail.
Embodiment 1
A kind of suppression resistance described in Overvoltage suppressing resistance of charged access high voltage bus verifying attachment as shown in Figure 1 includes insulated tube 1, the splendid attire conducting liquid 2 in insulated tube, metal electric 3 pole is connected with at the two ends of insulated tube, this electrode links up the interior or exterior space of insulated tube, is provided with and prevents conducting liquid from the sealing device 4 overflowed between the two between metal electrode and insulated tube.Described sealing device is sealing ring.Described conducting liquid is water.The resistance selection of water is at 50 Europe rice.Described water is for be mixed by running water and distilled water.The caliber of described insulated tube is 1 ~ 3cm.Described insulated tube or be toughened glass pipe.
The insulated tube length optional 15 ~ 20cm of the general 110kV grade of length of insulated tube, 220kV grade can select 20 ~ 30cm.
It is same as the prior art that the present embodiment does not state part.
Embodiment 2
The system of selection of the suppression resistance of described charged access high voltage bus verifying attachment, first to ensure that the measuring circuit of charged access high voltage bus verifying attachment is in overdamping state, voltage waveform on standard capacitor in measuring circuit is nonoscillating exponential waveform, substantially overshoot phenomenon is not had, secondly avoid again suppressing the resistance of resistance too high, the too high meeting of resistance makes transient state extend discharge time, cause suppressing ohmically voltage long for action time, resistive surface is made easily flashover to occur, do not have due damping and suppress transient state effect, described suppression resistance value range of choice exists
between, in formula, L is the equivalent inductance in loop, and C is the equivalent capacitance of capacitor.
When standard capacitor-value is 10pF, add stray capacitance about 10pF, the optimal damping resistor value estimated thus should be greater than 10k Ω.According to above-mentioned resistance selection rule, resistance can be selected to be the resistance of 100k about Ω.
It is identical with embodiment 1 that the present embodiment does not state part.
Claims (2)
1. the system of selection of the suppression resistance of a charged access high voltage bus verifying attachment, it is characterized in that: first will ensure that the measuring circuit of charged access high voltage bus verifying attachment is in overdamping state, voltage waveform on standard capacitor in measuring circuit is nonoscillating exponential waveform, substantially overshoot phenomenon is not had, secondly avoid again suppressing the resistance of resistance too high, the too high meeting of resistance makes transient state extend discharge time, cause suppressing ohmically voltage long for action time, resistive surface is made easily flashover to occur, do not have due damping and suppress transient state effect, described suppression resistance value range of choice exists
between, in formula, L is the equivalent inductance in loop, and C is the equivalent capacitance of capacitor.
2. the system of selection of the suppression resistance of charged access high voltage bus verifying attachment according to claim 1, is characterized in that: suppress resistance to exist
in scope.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210237954.5A CN102751062B (en) | 2012-07-11 | 2012-07-11 | The Overvoltage suppressing resistance of charged access high voltage bus verifying attachment and the system of selection of suppression resistance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210237954.5A CN102751062B (en) | 2012-07-11 | 2012-07-11 | The Overvoltage suppressing resistance of charged access high voltage bus verifying attachment and the system of selection of suppression resistance |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102751062A CN102751062A (en) | 2012-10-24 |
| CN102751062B true CN102751062B (en) | 2015-09-02 |
Family
ID=47031162
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210237954.5A Active CN102751062B (en) | 2012-07-11 | 2012-07-11 | The Overvoltage suppressing resistance of charged access high voltage bus verifying attachment and the system of selection of suppression resistance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102751062B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109100620B (en) * | 2018-06-08 | 2022-04-22 | 中国电力科学研究院有限公司 | System and method for verifying suppression effect of suppression guide wire on VFTO of GIS transformer substation |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101763928A (en) * | 2009-12-30 | 2010-06-30 | 中国科学院等离子体物理研究所 | High-voltage megawatt-grade high-power resistance |
| CN202332458U (en) * | 2011-12-07 | 2012-07-11 | 中国工程物理研究院流体物理研究所 | Water resistor |
| CN202678014U (en) * | 2012-07-11 | 2013-01-16 | 福建省电力有限公司电力科学研究院 | Overvoltage suppression resistor for detector connected with live high-voltage bus |
-
2012
- 2012-07-11 CN CN201210237954.5A patent/CN102751062B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101763928A (en) * | 2009-12-30 | 2010-06-30 | 中国科学院等离子体物理研究所 | High-voltage megawatt-grade high-power resistance |
| CN202332458U (en) * | 2011-12-07 | 2012-07-11 | 中国工程物理研究院流体物理研究所 | Water resistor |
| CN202678014U (en) * | 2012-07-11 | 2013-01-16 | 福建省电力有限公司电力科学研究院 | Overvoltage suppression resistor for detector connected with live high-voltage bus |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102751062A (en) | 2012-10-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103954895B (en) | Oiled paper compound insulation electrical ageing test system | |
| CN102737828B (en) | With the capacitance type potential transformer of transient over-voltage monitoring unit | |
| CN203405507U (en) | Integrally cast electronic voltage transformer for detecting current | |
| CN105428007B (en) | A kind of combined electrical apparatus of multigroup capacitance plate insulation core body | |
| CN103323751B (en) | A kind of high pressure stub cable insulation terminal local discharge test device and using method | |
| CN103472425B (en) | A kind of application process of line selection device for low current performance testing platform | |
| CN203572859U (en) | Novel high-voltage impact resistor voltage divider device | |
| CN110456123B (en) | Broadband transient voltage division measuring device and method | |
| CN204925278U (en) | Multi -functional transformer bushing on -line monitoring sensor | |
| CN102751062B (en) | The Overvoltage suppressing resistance of charged access high voltage bus verifying attachment and the system of selection of suppression resistance | |
| CN203037716U (en) | Transformer and reactor entrance VFTO high-frequency signal test device for GIS transformer station | |
| CN102109590B (en) | Solid foaming insulation direct-current standard voltage divider for extra-high voltage field | |
| CN201489071U (en) | Leakage current resistance sampling sensor for high voltage capacitive equipment | |
| CN203324357U (en) | Electronic voltage transformer used for detecting high voltage resistor current | |
| CN204407172U (en) | A kind of voltage transformer of anti-high-voltage impact | |
| CN202678014U (en) | Overvoltage suppression resistor for detector connected with live high-voltage bus | |
| CN104375031A (en) | On-line measurement device for power supply system surge protection device insulation resistance | |
| CN105699929A (en) | Equivalent leakage current error influence test device and test method thereof | |
| CN204188724U (en) | A kind of on-line measurement device of electric power system surge protector insulation resistance | |
| CN210626597U (en) | Detection apparatus for utilize capacitive sleeve pipe end screen to carry out homonymy high-tension apparatus partial discharge | |
| CN210401499U (en) | Sleeve monitoring device for transformer and transformer sleeve device | |
| CN202330523U (en) | Capacitive sampling voltage box for voltage quality monitoring of 220kV power system | |
| CN104749411A (en) | Capacitor voltage transformer with improved carrier function | |
| CN204989289U (en) | Measurement device for electric wire netting primary current | |
| CN103176046A (en) | Anti-highfield-interference transmission line electric megameter and testing method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| ASS | Succession or assignment of patent right |
Owner name: STATE GRID CORPORATION OF CHINA Free format text: FORMER OWNER: FUJIAN ELECTRIC POWER CO., LTD., ELECTRIC POWER RESEARCH INSTITUTE Effective date: 20121219 Owner name: FUJIAN ELECTRIC POWER CO., LTD. FUJIAN ELECTRIC PO Effective date: 20121219 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 350007 FUZHOU, FUJIAN PROVINCE TO: 100031 XICHENG, BEIJING |
|
| TA01 | Transfer of patent application right |
Effective date of registration: 20121219 Address after: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Applicant after: State Grid Corporation of China Applicant after: Fujian Electric Power Co., Ltd. Applicant after: Fujian Electric Power Co., Ltd., Electric Power Research Institute Address before: 350007 No. 48, Garden Road, Cangshan District, Fujian, Fuzhou Applicant before: Fujian Electric Power Co., Ltd., Electric Power Research Institute |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |