CN202330518U - Anti-induction electric operation cabinet for parameter test of overhead power transmission lines - Google Patents
Anti-induction electric operation cabinet for parameter test of overhead power transmission lines Download PDFInfo
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- CN202330518U CN202330518U CN201120434553XU CN201120434553U CN202330518U CN 202330518 U CN202330518 U CN 202330518U CN 201120434553X U CN201120434553X U CN 201120434553XU CN 201120434553 U CN201120434553 U CN 201120434553U CN 202330518 U CN202330518 U CN 202330518U
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- disconnecting link
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- operation cabinet
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- 238000012360 testing method Methods 0.000 title claims abstract description 53
- 230000005540 biological transmission Effects 0.000 title claims abstract description 24
- 238000009413 insulation Methods 0.000 claims abstract description 9
- 230000005283 ground state Effects 0.000 claims description 4
- 230000005611 electricity Effects 0.000 abstract description 6
- 230000006698 induction Effects 0.000 abstract 2
- 239000000725 suspension Substances 0.000 abstract 2
- 238000002474 experimental method Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 4
- 239000004020 conductor Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000819 phase cycle Methods 0.000 description 1
- 230000004224 protection Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
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Abstract
The utility model provides an anti-induction electric operation cabinet for parameter test of overhead power transmission lines. The operation box is composed of a head end line terminal block (5), a three-phase discrete upright disconnecting link (6), a grounding terminal (8), a grounding disconnecting link (11) and an operation cabinet insulation box body (7). A tester can be isolated from line induction electricity by the operation cabinet safely, and an induction potential of 5kV at most can be isolated independently. A three-phase line can be controlled to be at states of three-phase independent suspension, three-phase short circuit suspension or three-phase grounding respectively. The anti-induction electric operation cabinet provided by the utility model is applicable for parameter tests of 33-1000kV overhead power transmission lines.
Description
Technical field
The utility model relates to a kind of overhead transmission line parameter testing and uses the anti-induced electrical control box, belongs to the high-voltage test techniques field.
Background technology
When the overhead transmission line testing experiment; Usually to operate simultaneously at the circuit two ends; The end that main test apparatus is placed is called as head end; Its offside is called as end, need make in the process of the test that overhead transmission line is in that head and end is all unsettled, the head and end part is mutually unsettled or head end is unsettled-various states such as terminal ground connection, so that electric parameters such as full test circuit positive sequence impedance, zero sequence impedance, positive sequence electric capacity and zero sequence electric capacity.In existing testing regulations; It is to rely on the testing crew phase-splitting manually to accomplish that the state of overhead transmission line switches; Testing crew is worn insulating glove; The one hand-held test wire down that draws from pole line, another hand ground wire, through two lines being contacted or separation realizes the ground connection of this phase conductor and the switching of vacant state.There is following drawback in this test method:
1. fail reliably to isolate induced overvoltage.Can there be induced electricity in overhead transmission line when being in same transmission of electricity corridor with other alive circuits, the amplitude of induced voltage is relevant with line pitch, common corridor length and alive circuit load, does not generally wait from tens volts to last kilovolt.When having induced electricity on the circuit to be tested, the safety of testing crew only can rely on insulating glove to guarantee, in case the insulating property deterioration of gloves causes danger can for the personal safety of testing crew.
2. inefficiency, test connection is loaded down with trivial details.Because every phase conductor all need carry out the state blocked operation, therefore only phase-splitting operation part just needs head and end must take 6 testing crews, inefficiency altogether.Must pick out 5～6 ground wires in the test altogether, increase the workload of wiring and wiring.
Therefore, how in the overhead transmission line testing experiment, effectively to isolate induced voltage, ensure the testing crew personal safety, the short form test step is increased work efficiency simultaneously, becomes a problem demanding prompt solution.
Summary of the invention
The purpose of the utility model is, provides a kind of overhead transmission line parameter testing to use control box, effectively isolates induced voltage in the overhead transmission line testing experiment to be implemented in, and increases work efficiency.
The technical scheme of the utility model technology is that the parameter testing of the utility model overhead transmission line is made up of head end line side connection terminal 5, three-phase discrete disconnecting link 6, ground terminal 8, ground connection disconnecting link 11 and 7 of casings of control box insulation with control box; In insulation casing 7; Head end line side connection terminal 5, three-phase discrete disconnecting link 6, ground connection disconnecting link 11 and ground terminal 8 are installed on the insulating panel, the insulated handle of staff through operation three-phase discrete disconnecting link 6 and ground connection disconnecting link 11 with realize circuit three-phase is unsettled respectively, the three-phase short circuit is unsettled or three-phase ground state state between switching.
The parameter testing of the utility model overhead transmission line can be isolated testing crew and line side induced electricity safety with control box, the induced potential of high energy independent isolating 5kV.
The beneficial effect of the utility model and prior art comparison is, testing crew not with draw from the line side lead under test wire contact, isolated induced electricity, safe and reliable; Advance in the control box line side connection terminal, three-phase discrete disconnecting link, ground connection disconnecting link and ground terminal are integrated simultaneously, simplified the test wiring process, saved the test manpower, improved test efficiency.
The utility model is applicable to 33 ~ 1000kV overhead transmission line parameter testing test.
Description of drawings
Fig. 1 is that the overhead transmission line parameter testing is with anti-induced electrical control box theory diagram;
Picture in picture number is: the 1st, and head end three-phase overhead transmission line; The 2nd, head end three-phase test downlead; The 3rd, head end line side isolating switch; The 4th, head end line side ground connection disconnecting link; The 5th, head end line side connection terminal; The 6th, three-phase discrete disconnecting link; The 7th, control box insulation casing; The 8th, ground terminal; The 9th, ground wire; The 10th, earth point; The 11st, the ground connection disconnecting link; The 12nd, line parameter circuit value experiment with measuring equipment; The 13rd, terminal head end three-phase overhead transmission line; 14 terminal three-phase test downleads; The 15th, tail end line side isolating switch; The 16th, end line side joint ground disconnecting link.
Embodiment
The embodiment of the utility model is as shown in Figure 1.
The parameter testing of present embodiment overhead transmission line is made up of head end line side connection terminal 5, three-phase discrete disconnecting link 6, ground terminal 8, ground connection disconnecting link 11 and 7 of casings of control box insulation with control box; In insulation crust; Head end line side connection terminal 5, three-phase discrete disconnecting link 6, ground connection disconnecting link 11 and ground terminal 8 are installed on the insulating panel, the insulated handle of staff through operation three-phase discrete disconnecting link and ground connection disconnecting link with realize circuit three-phase is unsettled respectively, the three-phase short circuit is unsettled or three-phase ground state state between switching.
The parameter testing of present embodiment overhead transmission line is following with the step of anti-induced electrical control box in overhead transmission line parameter testing test:
1, the preparatory stage before the test
Isolating switch breaks off in circuit head and end line side; When ground connection disconnecting link 11 is positioned at closure state; Testing crew inserts test downlead 2 (or 14) from overhead transmission line three-phase conducting wire 1; Three-phase line side terminal 5 in the corresponding access operation case of downlead 2 (or 14), three-phase discrete disconnecting link 6 closures reliably are connected the ground terminal in the control box 8 with earth point 10 with ground wire 9.Line parameter circuit value experiment with measuring equipment 12 three-phase slotted lines are inserted the trackside connection terminal 5 of head end control box.
2, in the process of the test
After application ground connection disconnecting link 11 cut-offs; Utilize disconnecting link to cut-off and the closed switching that realizes the unsettled and ground state of circuit; Carry out following test successively: (a) the head end three-phase is simultaneously unsettled; That terminal three-phase carries out respectively is one mutually unsettled, the operation of two phase ground, carries out three-phase line insulation against ground resistance and phase sequence test revision.(b) the head end three-phase is simultaneously unsettled, and terminal three-phase short circuit is unsettled, carries out three-phase line positive sequence impedance experiment with measuring.(c) the head end three-phase is simultaneously unsettled, and terminal three-phase ground connection is carried out three-phase line zero sequence impedance experiment with measuring.(d) the head end three-phase is simultaneously unsettled, and terminal three-phase is simultaneously unsettled, carries out three-phase line positive sequence capacitance measurement test.(e) head end three-phase short circuit is unsettled, and terminal three-phase is simultaneously unsettled, carries out three-phase line zero sequence capacitance measurement test.
3, after test finishes, apply for closed two-termial line side joint ground disconnecting link 11, closed three-phase discrete disconnecting link 6 and ground connection disconnecting link 11 form two ground protections, remove test lead and ground wire then successively, accomplish test.
Claims (1)
1. the anti-induced electrical control box is used in an overhead transmission line parameter testing; It is characterized in that said control box is made up of head end line side connection terminal (5), three-phase discrete disconnecting link (6), ground terminal (8), ground connection disconnecting link (11) and control box insulation casing (7); In insulation casing (7); Head end line side connection terminal (5), three-phase discrete disconnecting link (6), ground connection disconnecting link (11) and ground terminal (8) are installed on the insulating panel, the insulated handle of staff through operation three-phase discrete disconnecting link (6) and ground connection disconnecting link (8) with realize circuit three-phase is unsettled respectively, the three-phase short circuit is unsettled or three-phase ground state state between switching.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120434553XU CN202330518U (en) | 2011-11-07 | 2011-11-07 | Anti-induction electric operation cabinet for parameter test of overhead power transmission lines |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120434553XU CN202330518U (en) | 2011-11-07 | 2011-11-07 | Anti-induction electric operation cabinet for parameter test of overhead power transmission lines |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202330518U true CN202330518U (en) | 2012-07-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120434553XU Expired - Fee Related CN202330518U (en) | 2011-11-07 | 2011-11-07 | Anti-induction electric operation cabinet for parameter test of overhead power transmission lines |
Country Status (1)
| Country | Link |
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| CN (1) | CN202330518U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105116224A (en) * | 2015-07-04 | 2015-12-02 | 国网山东省电力公司东营供电公司 | Novel auxiliary line parameter testing tool and method |
| CN107643426A (en) * | 2016-07-20 | 2018-01-30 | 国网辽宁省电力有限公司丹东供电公司 | Control cabinet for transmission line parameter test lead |
| CN109342784A (en) * | 2018-12-05 | 2019-02-15 | 国网河北省电力有限公司电力科学研究院 | Transmission line of electricity tests termination and mode of connection |
| CN111983522A (en) * | 2020-08-26 | 2020-11-24 | 广东韶钢松山股份有限公司 | Cable detection method |
-
2011
- 2011-11-07 CN CN201120434553XU patent/CN202330518U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105116224A (en) * | 2015-07-04 | 2015-12-02 | 国网山东省电力公司东营供电公司 | Novel auxiliary line parameter testing tool and method |
| CN107643426A (en) * | 2016-07-20 | 2018-01-30 | 国网辽宁省电力有限公司丹东供电公司 | Control cabinet for transmission line parameter test lead |
| CN109342784A (en) * | 2018-12-05 | 2019-02-15 | 国网河北省电力有限公司电力科学研究院 | Transmission line of electricity tests termination and mode of connection |
| CN111983522A (en) * | 2020-08-26 | 2020-11-24 | 广东韶钢松山股份有限公司 | Cable detection method |
| CN111983522B (en) * | 2020-08-26 | 2023-01-06 | 广东韶钢松山股份有限公司 | Cable detection method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: STATE GRID CORPORATION OF CHINA Effective date: 20121206 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20121206 Address after: 330006 No. 88 min Qiang Road, private science and Technology Park, Jiangxi, Nanchang Patentee after: Jiangxi Electric Power Science Academy Patentee after: State Grid Corporation of China Address before: 330006 No. 88 min Qiang Road, private science and Technology Park, Jiangxi, Nanchang Patentee before: Jiangxi Electric Power Science Academy |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120711 Termination date: 20181107 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |