CN103630813A - Solid insulated conductor insulation electrified monitoring method - Google Patents
Solid insulated conductor insulation electrified monitoring method Download PDFInfo
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- CN103630813A CN103630813A CN201310654435.3A CN201310654435A CN103630813A CN 103630813 A CN103630813 A CN 103630813A CN 201310654435 A CN201310654435 A CN 201310654435A CN 103630813 A CN103630813 A CN 103630813A
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Abstract
The invention relates to a solid insulated conductor insulation electrified monitoring method and belongs to the technical field of insulation monitoring. The method includes: disposing an insulation detecting instrument between the shielding layer of a to-be-detected solid insulated conductor and the 'ground'; under the normal electrified operation state of the to-be-detected solid insulated conductor, online measuring and recording the operation current between the shielding layer of the to-be-detected solid insulated conductor and the 'ground' in real time; determining the normal are and abnormal area of the operation state of the to-be-detected solid insulated conductor by building an operation data graph/chart of the to-be-detected solid insulated conductor; online monitoring the insulation state of the to-be-detected solid insulated conductor in real time by comparing the operation data graph/chart with the actual measured operation current between the shielding layer of the to-be-detected solid insulated conductor and the 'ground'. By the method widely applicable to the field of state monitoring of solid insulated conductors, a quantitative and qualitative monitoring measure can be provided for the to-be-detected solid insulated conductor, low-voltage side severe insulation fault of a transformer can be avoided, and operation reliability of a power grid can be increased favorably.
Description
Technical field
The invention belongs to insulating monitoring field, relate in particular to a kind of live monitoring method of the insulating property for solid insulation conductor.
Background technology
Solid insulation conductor (for example adopting the solid insulated busbar of hermetically-sealed construction form) is a kind of novel high-capacity transmission of electricity conductive equipment, is usually used in power load center EHV transformer low-voltage side outlet loop, city, to power distribution network transmission power.
Middle pressure distribution equipment adopts solid insulation conductor, can access better insulating reliability, can reduce taking up room of equipment, contributes to realize the miniaturization of distribution equipment/device, can reduce the one-time investment for equipment.
Due to the easy maintenance of solid insulation conductor, to take up an area little, the on-the-spot installation in space easy, in the underground substation of large size city electrical network and indoor substation, obtain and be widely used.
The safe operation of solid insulation conductor is not only related to power distribution network operational reliability, and because solid insulation conductor is positioned at transformer low voltage side outlet, when it breaks down, fault current is very big, to transformer, also can cause tremendous influence, when serious, transformer fault may be caused, the operational management of the type conductor must be paid attention to.
Because solid insulation conductor belongs to novel conductor form, for solid insulation conductor, lack effective monitoring means at present, existing management mode is simple, only depends on visual and sense of hearing inspection, not monitoring means quantitatively and even qualitatively.
Summary of the invention
Technical matters to be solved by this invention is to provide a kind of method of solid insulation conductor insulation live monitoring, it adopts the insulation detecting method of live monitoring, solid insulation conductor is carried out to effective insulating monitoring, enriched the charged detection means of high voltage installation, can avoid the serious insulation fault of transformer generation low-pressure side, can provide quantitatively and even monitoring means qualitatively solid insulation conductor, contribute to the safe operation of solid insulation conductor and improve the operational reliability of middle voltage distribution networks integral body.
Technical scheme of the present invention is: a kind of method of solid insulation conductor insulation live monitoring is provided, it is characterized in that: the screen layer of solid insulation conductor to be measured and " " between, an insulation tester table is set; Record the real time execution information of solid insulation conductor equipment to be measured, accumulation historical data; Under the state of the normal charging operation of solid insulation conductor to be measured, online measure in real time and record described solid insulation conductor screen layer and " " between running current; By collecting the historical data of solid insulation conductor equipment operation information to be measured, and the running current data under the normal charging operation state of solid insulation conductor to be measured, set up the service data figure/table of solid insulation conductor equipment to be measured, determine normal region and the abnormal area of solid insulation conductor running status to be measured; By to the screen layer of described service data figure/table and described solid insulation conductor and " " between the comparison of running current actual measured value, in real time, the state of insulation of on-line monitoring solid insulation conductor to be measured.
Concrete, described in it, the operation information of solid insulation conductor equipment to be measured at least comprises working voltage and the running current of electric network swim situation, active power, reactive power, solid insulation conductor to be measured.
Insulation tester table described in it is earth current meter.
Described in it screen layer of solid insulation conductor and " " between running current comprise single-phase or three-phase operation electric current.
Further, described in it screen layer of solid insulation conductor and " " between running current be ground connection running current.
The grounded screen of the “Di”Wei transformer station described in it or earthing pole wire.
Described live monitoring method, by detecting the screen layer of solid insulation conductor to be measured and the ground connection running current between grounded screen or earthing pole wire, is monitored the insulation against ground state of described solid insulation conductor under electriferous state.
Compared with the prior art, advantage of the present invention is:
1. the technical program is carried out online insulating monitoring in real time to solid insulation conductor, for solid insulation conductor status monitoring and high voltage installation status monitoring provide a kind of new monitoring method;
2. the technical program has realized the on-line monitoring to solid insulation conductor running status, for judgment device running status provides quantitative test standard;
3. utilize earth lead to measure the state of insulation of solid insulation conductor, operational outfit is carried out to monitoring does not have potential safety hazard, can protection personnel's personal safety and the safety of monitoring equipment.
Accompanying drawing explanation
Fig. 1 is the connection diagram of measurement mechanism of the present invention.
In figure, 1 is the conductor of solid insulation conductor, and 2 is the screen layer of solid insulation conductor, and 3 is the insulation course of solid insulation conductor, and 4 is reometer, 5 be " ".
Embodiment
Below in conjunction with accompanying drawing, the present invention will be further described.
Shown in Fig. 1, technical scheme of the present invention provides a kind of method of solid insulation conductor insulation live monitoring, and it comprises the following steps:
The screen layer 2 of solid insulation conductor 1 to be measured and " " between 5, be provided with an insulation tester table 4;
By recording the real time execution information of solid insulation conductor equipment to be measured, accumulation historical data;
Under the state of the normal charging operation of solid insulation conductor to be measured, online measure in real time and record described solid insulation conductor screen layer and " " between running current;
By collecting the historical data of solid insulation conductor equipment operation information to be measured, and the running current data under the normal charging operation state of solid insulation conductor to be measured, set up the service data figure/table of solid insulation conductor equipment to be measured, determine normal region and the abnormal area of solid insulation conductor running status to be measured;
By to the screen layer of described service data figure/table and described solid insulation conductor and " " between the comparison of running current actual measured value, in real time, the state of insulation of on-line monitoring solid insulation conductor to be measured.
Wherein, the operation information of described solid insulation conductor equipment to be measured at least comprises working voltage and the running current of electric network swim situation, active power, reactive power, solid insulation conductor to be measured.
Insulation tester table described in it is earth current meter.
Described in it screen layer of solid insulation conductor and " " between running current comprise single-phase or three-phase operation electric current.
Further, described in it screen layer of solid insulation conductor and " " between running current be ground connection running current.
The grounded screen of the “Di”Wei transformer station described in it or earthing pole wire.
Described live monitoring method, by detecting the screen layer of solid insulation conductor to be measured and the ground connection running current between grounded screen or earthing pole wire, is monitored the insulation against ground state of described solid insulation conductor under electriferous state.
At present in actual moving process, lack for the effective monitoring means of solid insulation conductor, management mode is simple, only depends on visual and sense of hearing inspection, not monitoring means quantitatively and even qualitatively.By the solid insulation conductor insulation monitoring method of the technical program, make the dielectric strength of solid insulation conductor, particularly the state under charging operation state is monitored.By solid insulation conductor is carried out to effective insulating monitoring, enriched the charged detection means of high voltage installation, avoid the serious insulation fault of transformer generation low-pressure side, conscientiously improved the operational reliability of middle voltage distribution networks, there is great Social benefit and economic benefit.
The insulation system of solid insulation conductor is taked screen layer and insulating material composite structure, and the even conductor of screen layer distributes with insulating material internal electric field over the ground, by earth lead, is connected with grounded screen.By the running current between monitoring screen layer and grounded screen or between earth lead (actual is operation ground current), can monitor solid insulation conductor insulation state.
The technical program, according to the research to solid insulation conductor online monitoring data, is determined the threshold value with break-up value, defines demand value and the warning value of Monitoring Data, makes accurately judgment device running status of insulated monitoring method.
1), when reality is implemented, according to following monitoring step, carry out the collection of data:
The first step: collect solid insulation conductor equipment operation information, comprising: the real-time information such as electric network swim situation, active power, reactive power, working voltage, running current, for Analysis on monitoring data;
Second step: determine position, solid insulation conductor current monitoring point, checkout facility Grounding, finds interference source, avoids anomalous event to affect measurement result;
The 3rd step: measure single-phase conductor Monitoring Data, measure three-phase conductor Monitoring Data, comprehensively analyze data result, search operation exception conductor.
2) data analysing method:
Accumulation historical data, relatively monitor value and history value;
Contrast alternate data, comparing class is like operating mode machine operation;
Composite measurement result, draws particular device service data figure/table, determines running status normally and abnormal area;
3) the operational monitoring standard of solid insulation conductor:
Contrast equipment operating data figure/table, according to monitoring result judgment device running status.
The solid insulation conductor state monitoring method that the technical program provides, has realized the on-line monitoring to solid insulation conductor running status, for judgment device running status provides quantitative test standard; It utilizes earth lead to measure solid insulation conductor insulation state, and professional carries out monitoring to operational outfit does not have potential safety hazard, has protected the person and device security; This monitoring method is utilized ripe detecting instrument (earth current meter), not limited by field condition, and fixing Condition Monitoring Data collecting device also can be installed, and is applicable to all solids insulated conductor equipment to carry out online and live monitoring.
The present invention can be widely used in the status monitoring field of solid insulation conductor.
Claims (7)
1. a method for solid insulation conductor insulation live monitoring, is characterized in that:
The screen layer of solid insulation conductor to be measured and " " between, an insulation tester table is set;
Record the real time execution information of solid insulation conductor equipment to be measured, accumulation historical data;
Under the state of the normal charging operation of solid insulation conductor to be measured, online measure in real time and record described solid insulation conductor screen layer and " " between running current;
By collecting the historical data of solid insulation conductor equipment operation information to be measured, and the running current data under the normal charging operation state of solid insulation conductor to be measured, set up the service data figure/table of solid insulation conductor equipment to be measured, determine normal region and the abnormal area of solid insulation conductor running status to be measured;
By to the screen layer of described service data figure/table and described solid insulation conductor and " " between the comparison of running current actual measured value, in real time, the state of insulation of on-line monitoring solid insulation conductor to be measured.
2. according to the method for solid insulation conductor insulation live monitoring claimed in claim 1, the operation information that it is characterized in that described solid insulation conductor equipment to be measured at least comprises working voltage and the running current of electric network swim situation, active power, reactive power, solid insulation conductor to be measured.
3. according to the method for solid insulation conductor insulation live monitoring claimed in claim 1, it is characterized in that described insulation tester table is earth current meter.
4. according to the method for solid insulation conductor insulation live monitoring claimed in claim 1, it is characterized in that described solid insulation conductor screen layer and " " between running current comprise single-phase or three-phase operation electric current.
5. according to the method for solid insulation conductor insulation live monitoring claimed in claim 1, it is characterized in that described solid insulation conductor screen layer and " " between running current be ground connection running current.
6. according to the method for solid insulation conductor insulation live monitoring claimed in claim 1, it is characterized in that grounded screen or the earthing pole wire of described “Di”Wei transformer station.
7. according to the method for solid insulation conductor insulation live monitoring claimed in claim 1, live monitoring method described in it is characterized in that, by detecting the screen layer of solid insulation conductor to be measured and the ground connection running current between grounded screen or earthing pole wire, is monitored the insulation against ground state of described solid insulation conductor under electriferous state.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310654435.3A CN103630813B (en) | 2013-12-05 | 2013-12-05 | A kind of method of solid insulation conductor insulation live monitoring |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310654435.3A CN103630813B (en) | 2013-12-05 | 2013-12-05 | A kind of method of solid insulation conductor insulation live monitoring |
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| CN103630813A true CN103630813A (en) | 2014-03-12 |
| CN103630813B CN103630813B (en) | 2016-08-31 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5471144A (en) * | 1993-09-27 | 1995-11-28 | Square D Company | System for monitoring the insulation quality of step graded insulated high voltage apparatus |
| JPH1080052A (en) * | 1996-08-30 | 1998-03-24 | Tohoku Denki Hoan Kyokai | High-voltage insulation continuous monitoring device |
| CN2718591Y (en) * | 2004-05-17 | 2005-08-17 | 西安交通大学 | Dielectric loss on-line monitoring device for capacitive electric equipment |
| CN202351381U (en) * | 2011-11-24 | 2012-07-25 | 北京弘浩达牵引电气有限公司 | Insulation detecting device for service cable |
| CN202916392U (en) * | 2013-01-30 | 2013-05-01 | 梁红军 | Online monitoring system for partial discharge of switch cabinet based on pulse current method and grounding electric wave method |
| CN203299337U (en) * | 2013-06-24 | 2013-11-20 | 长沙理工大学 | High voltage XLPE cable insulation on-line monitoring device |
-
2013
- 2013-12-05 CN CN201310654435.3A patent/CN103630813B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5471144A (en) * | 1993-09-27 | 1995-11-28 | Square D Company | System for monitoring the insulation quality of step graded insulated high voltage apparatus |
| JPH1080052A (en) * | 1996-08-30 | 1998-03-24 | Tohoku Denki Hoan Kyokai | High-voltage insulation continuous monitoring device |
| CN2718591Y (en) * | 2004-05-17 | 2005-08-17 | 西安交通大学 | Dielectric loss on-line monitoring device for capacitive electric equipment |
| CN202351381U (en) * | 2011-11-24 | 2012-07-25 | 北京弘浩达牵引电气有限公司 | Insulation detecting device for service cable |
| CN202916392U (en) * | 2013-01-30 | 2013-05-01 | 梁红军 | Online monitoring system for partial discharge of switch cabinet based on pulse current method and grounding electric wave method |
| CN203299337U (en) * | 2013-06-24 | 2013-11-20 | 长沙理工大学 | High voltage XLPE cable insulation on-line monitoring device |
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