CN102590636A - Portable double-shielding standard capacitor - Google Patents
Portable double-shielding standard capacitor Download PDFInfo
- Publication number
- CN102590636A CN102590636A CN201210069310XA CN201210069310A CN102590636A CN 102590636 A CN102590636 A CN 102590636A CN 201210069310X A CN201210069310X A CN 201210069310XA CN 201210069310 A CN201210069310 A CN 201210069310A CN 102590636 A CN102590636 A CN 102590636A
- Authority
- CN
- China
- Prior art keywords
- capacitor
- shield
- portable double
- shielding
- standard capacitor
- 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
Images
Landscapes
- Testing Relating To Insulation (AREA)
Abstract
The invention relates to the technical field of capacitors, in particular to a portable double-shielding standard capacitor. The portable double-shielding standard capacitor can overcome the defects of high interference and low operating safety of the original method for measuring an electric field of a casing pipe and effectively improve data measuring reliability. The portable double-shielding standard capacitor comprises a capacitor and a shielding layer, wherein an inner shielding layer is arranged in an insulating barrel; SF6 insulating gas is filled in the inner shielding layer; a capacitor group is arranged in the inner shielding layer; a voltage-sharing cover is arranged on the upper part of the insulating barrel; an insulating pedestal is arranged at the bottom of the insulating barrel; a lead at one end of the capacitor group is led out to the voltage-sharing cover and another lead at the other end of the capacitor group is led out to a measuring end arranged on the insulating barrel; and a polyester heat-resistant adhesive tape is wrapped outside the capacitor group. The portable double-shielding standard capacitor can extract circuit voltage when testing that the tested casing pipe is electrified, can measure dielectric loss angle and capacitance of the casing pipe, can improve operating safety of electrification monitoring, and can also measure the actual capacitance of the casing pipe and eliminate the influence of the external electric field on the test result. The portable double-shielding standard capacitor has the double-shielding function and can be suitable for different on-site working environments.
Description
Technical field
The present invention relates to the technical field of capacitor, relate in particular to a kind of portable double shield standard capacitor, it can change measured the sleeve pipe electric field in the past and disturbed drawback big, the processing safety difference, effectively improved the reliability of measurement data.
Background technology
At present, when sleeve pipe is carried out its electric capacity of live line measurement and dielectric loss, answer external homology electric capacity bar as voltage-dividing capacitor, gather voltage signal, can't eliminate the interference of external electric field, this will directly have influence on the accuracy of measurement result.And, because the irrationality of its structure has also brought great threat for operating personnel's personal safety, brought corresponding difficulty finally for the accurate judgement of tested device.
Summary of the invention
External electric field was disturbed the technical matters that can't eliminate when the present invention measured in order to solve the electric capacity bar, and a kind of portable double shield standard capacitor is provided.It can measure the actual capacitance value of sleeve pipe, and eliminates the influence of external electric field to test result, considers that the sleeve pipe major part is installed in indoor and highly skimble-scamble reality; The present invention has the double shield function, and volume is little, and is in light weight, has the standard capacitor of flexible elevating function, and can satisfy testing requirements.
The technical solution adopted for the present invention to solve the technical problems is:
Portable double shield standard capacitor, it comprises capacitor and screen layer, in the insulation bucket, is provided with internal shield, the inside of internal shield is filled with the SF6 insulating gas, is provided with the capacitor group in the internal shield; Insulation bucket top is provided with grading shield, and insulation bucket bottom is provided with insulator foot; Capacitor group one end leads to grading shield, and the capacitor group other end leads to the measuring junction that is located on the insulation bucket; The external packets of capacitor group is provided with the polyester heat resistant adhesive tape.
Described insulation bucket is epoxy resin overcoat insulation bucket.
Described capacitor group is made up of a plurality of teflon membrane capacitances, and each little electric capacity adopts seamless metal welding combination.
Described internal shield is the metal cylinder shell.
The voltage extracting of described measuring junction partly adopts the connect-disconnect plug that has function of shielding to draw ground connection outward.
Described grading shield and high voltage bus are connected.
The invention has the beneficial effects as follows: can in test measured sleeve pipe racks electricity, extract line voltage distribution easily, accurately measure the dielectric loss angle and the electric capacity of sleeve pipe.And simple in structure, can improve the processing safety of live monitoring; Can also measure the actual capacitance value of sleeve pipe, and eliminate the influence of external electric field, consider that the sleeve pipe major part is installed in indoor and highly skimble-scamble reality test result; The present invention has the double shield function, and volume is little, and is in light weight, has flexible elevating function, can be fit to different on-the-spot working environments, and be convenient to onsite moving, can satisfy testing requirements.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the present invention is done further detailed explanation.
Fig. 1 is a structural drawing of the present invention.
Fig. 2 is the test connection figure of standard capacitor of the present invention
Among the figure: insulation bucket 1, interference source 2, insulator foot 3, internal shield 4, capacitor group 5, grading shield 6, measuring junction 7, SF6 insulating gas 8, bus 9.
Embodiment
The present invention is a kind of portable double shield standard capacitor, and as shown in Figure 1, it comprises capacitor and screen layer.In epoxy resin overcoat insulation bucket 1, be provided with internal shield 4, the inside of internal shield 4 is filled with SF6 insulating gas 8, is provided with capacitor group 5 in the internal shield 4; Capacitor group 5 extracts voltage and is provided with measuring junction 7, and described voltage extracting partly adopts the connect-disconnect plug that has function of shielding to draw ground connection outward; Epoxy resin overcoat insulation bucket 1 top is provided with grading shield 6, and epoxy resin overcoat insulation bucket 1 bottom is provided with insulator foot 3.
The present invention is that a plurality of little electric capacity are arranged by calculated value in order in epoxy resin overcoat insulation bucket 1, and total capacitance is 50pF, and outside double shield layer is in order to the undesired signal of shielding external electric field.In Fig. 1,
Several small-sized teflon membrane capacitances are formed capacitor group 5, and capacitor group 5 one ends lead to grading shield 6, and capacitor group 5 other ends lead to the measuring junction 7 that is located on the epoxy resin overcoat insulation bucket 1.Grading shield 6 is used to connect high pressure, and measuring junction 7 is used for measuring use.The outside of capacitor group 5 is surrounded by resistant polyester hot glue band; The metal cylinder shell of packing into is in the internal shield 4; The inner space of internal shield 4 charges into SF6 insulating gas 8; The most external of internal shield 4 is provided with the effect that epoxy resin overcoat insulation bucket 1 is used for playing insulation, and the bottom adds insulator foot 3, can satisfy dielectric level.Measuring junction 7 extracts voltage and adopts the connect-disconnect plug that has function of shielding to draw bonding outward through Schering bridge, makes it eliminate external electric field interference source 2 fully and disturbs.The present invention adopt double layer screen, in fill the SF6 insulating gas, can accurately measure capacitance of bushing value and dielectric loss value.
The present invention selects for use poly tetrafluoroethylene to do the medium small capacitor and makes up; Each little electric capacity adopts seamless metal welding combination to reduce dielectric loss; Outsourcing polyester heat resistant adhesive tape, the metal cylinder enclosure of packing into charge into SF6 gas and insulate, and its most external adopts the shielding of epoxy resin overcoat bucket again.During on-line monitoring; Extract the homology voltage signal through capacitor, input Jie damage tester is situated between and undermines the test of electric capacity, under the voltage of testing ground; The suffered external electric field of this capacitor is disturbed all and is eliminated through double layer screen, is able to accurately measure the purpose of sleeve pipe.
When adopting this capacitor, can eliminate the disturbing effect of external electric field fully to measurement result to the live testing capacitance type equipment.Standard capacitor adopts polytetrafluoroethylmaterial material to process, and the SF6 gas-insulated is used in interior insulation, so standard capacitance has the double layer screen function; Can eliminate the interference of external electric field fully; Adopt the SF6 gas-insulated can make the standard capacitor volume little in light weight again, the hydraulic pressure increasing apparatus is adopted in the bottom, has controllability flexibly; Be fit to different on-the-spot working environments, and be convenient to onsite moving.
As shown in Figure 2, in embodiment illustrated in fig. 2, grading shield end 6 links to each other with high voltage bus 9, and measuring junction 7 links to each other with Schering bridge, as standard capacitor C
NCapacitance of bushing value and Jie's damage amount are measured.
Claims (6)
1. portable double shield standard capacitor; It comprises capacitor and screen layer; It is characterized in that: in insulation bucket (1), be provided with internal shield (4), the inside of internal shield (4) is filled with SF6 insulating gas (8), is provided with capacitor group (5) in the internal shield (4); Insulation bucket (1) top is provided with grading shield (6), and insulation bucket (1) bottom is provided with insulator foot (3);
Capacitor group (5) one ends lead to grading shield (6), and capacitor group (5) other end leads to the measuring junction (7) that is located on the insulation bucket (1); The external packets of capacitor group (5) is provided with the polyester heat resistant adhesive tape.
2. portable double shield standard capacitor according to claim 1 is characterized in that: described insulation bucket (1) is epoxy resin overcoat insulation bucket.
3. portable double shield standard capacitor according to claim 1 is characterized in that: described capacitor group (5) is made up of a plurality of teflon membrane capacitances, and each little electric capacity adopts seamless metal welding combination.
4. portable double shield standard capacitor according to claim 1 is characterized in that: described internal shield (4) is the metal cylinder shell.
5. portable double shield standard capacitor according to claim 1 is characterized in that: the voltage extracting of described measuring junction (7) partly adopts the connect-disconnect plug that has function of shielding to draw ground connection outward.
6. portable double shield standard capacitor according to claim 1 is characterized in that: described grading shield (6) is connected with high voltage bus (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210069310XA CN102590636A (en) | 2012-03-16 | 2012-03-16 | Portable double-shielding standard capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210069310XA CN102590636A (en) | 2012-03-16 | 2012-03-16 | Portable double-shielding standard capacitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102590636A true CN102590636A (en) | 2012-07-18 |
Family
ID=46479557
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210069310XA Pending CN102590636A (en) | 2012-03-16 | 2012-03-16 | Portable double-shielding standard capacitor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102590636A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102880751A (en) * | 2012-09-14 | 2013-01-16 | 中国电力科学研究院 | Method for designing electrode parameters of upright compressed gas standard capacitor |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1508819A (en) * | 2002-12-17 | 2004-06-30 | 王日新 | Dry capacitor type voltage transformer |
| US20080092380A1 (en) * | 2004-05-28 | 2008-04-24 | Maxwell Technologies, Inc. | Method of processing high voltage capacitors |
| CN201403276Y (en) * | 2009-03-24 | 2010-02-10 | 日新电机株式会社 | Equipment for electric power |
| CN202495346U (en) * | 2012-03-16 | 2012-10-17 | 辽宁省电力有限公司沈阳供电公司 | Portable double-shielded standard capacitor |
-
2012
- 2012-03-16 CN CN201210069310XA patent/CN102590636A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1508819A (en) * | 2002-12-17 | 2004-06-30 | 王日新 | Dry capacitor type voltage transformer |
| US20080092380A1 (en) * | 2004-05-28 | 2008-04-24 | Maxwell Technologies, Inc. | Method of processing high voltage capacitors |
| CN201403276Y (en) * | 2009-03-24 | 2010-02-10 | 日新电机株式会社 | Equipment for electric power |
| CN202495346U (en) * | 2012-03-16 | 2012-10-17 | 辽宁省电力有限公司沈阳供电公司 | Portable double-shielded standard capacitor |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102880751A (en) * | 2012-09-14 | 2013-01-16 | 中国电力科学研究院 | Method for designing electrode parameters of upright compressed gas standard capacitor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103105568B (en) | Aging and the local discharge integrated experimental provision of transformer oil paper insulated electrothermic associating | |
| CN103267933B (en) | The method of shelf depreciation in measuring transformer induced voltage test device | |
| CN102608388B (en) | VFTO (very fast transient overvoltage) measurement method and system | |
| CN104101820A (en) | Transformer oil/paper insulation aging experimental device and method | |
| CN103149515B (en) | A kind of for the space charge measurement device in dielectric long-term ageing process | |
| KR101290294B1 (en) | Partial discharge diagnostic system of power apparatus using contactless phase measurement sensor | |
| CN103954896A (en) | Oiled paper insulation partial discharge inception voltage test system | |
| CN104597425A (en) | Electric examination platform suitable for GIS (geographic information system) electronic transformer | |
| CN109557439B (en) | Oil paper insulation defect sleeve running condition simulation device | |
| CN103278753B (en) | Device for transformer induction voltage test | |
| CN103149506A (en) | Power transformer interturn insulation surface bubble partial discharge simulation experimental platform and experimental method | |
| CN204359925U (en) | One is applicable to the charged evaluating platform of GIS electronic mutual inductor | |
| CN202495346U (en) | Portable double-shielded standard capacitor | |
| CN102759418A (en) | Device and method for measuring oil immersed transformer winding | |
| CN107907806A (en) | A kind of bus voltage measurement device based on GIS disc insulator distribution capacity | |
| CN207866958U (en) | It is segmented adding pressure type insulated tension pole local discharge detection device | |
| CN105005665A (en) | Method and system for ultrahigh frequency radiation characteristic simulation of oil impregnated paper condenser sleeve end screen | |
| CN107677896B (en) | Same district timesharing conductance space charge measurement device based on ontology capacitance | |
| CN105807189B (en) | The experimental rig and test method of superconducting insulation material shelf depreciation development process | |
| CN107748295A (en) | A kind of device and method of GIS disc insulators dielectric loss test | |
| CN110456123A (en) | A kind of wideband transient voltage partial pressure measuring apparatus and method | |
| CN208044003U (en) | The partial discharge of transformer on-line detecting system judged based on polarity | |
| CN106970268A (en) | Single-phase overhead transmission line of electricity phase voltage method for self-calibrating based on shunt capacitance | |
| CN207067321U (en) | High altitude localities 750kV shunt reactor Partial Discharge Testing on Site devices | |
| CN102590636A (en) | Portable double-shielding standard capacitor |
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 ELECTRIC NET CROP. Effective date: 20121009 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20121009 Address after: 110811 eight Heping Street, 94 Heping Street, Liaoning, Shenyang Applicant after: Liaoning Shenyang Electric Power Supply Co., Ltd. Applicant after: State Grid Corporation of China Address before: 110811 eight Heping Street, 94 Heping Street, Liaoning, Shenyang Applicant before: Liaoning Shenyang Electric Power Supply Co., Ltd. |
|
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20120718 |