CN201716355U - Electronic current and voltage transformer for 126kVGIS - Google Patents
Electronic current and voltage transformer for 126kVGIS Download PDFInfo
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- CN201716355U CN201716355U CN2010202204509U CN201020220450U CN201716355U CN 201716355 U CN201716355 U CN 201716355U CN 2010202204509 U CN2010202204509 U CN 2010202204509U CN 201020220450 U CN201020220450 U CN 201020220450U CN 201716355 U CN201716355 U CN 201716355U
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- 126kvgis
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Abstract
The utility model discloses an electronic current and voltage transformer for a 126kVGIS, and the electronic current and voltage transformer comprises a housing, single current and voltage transformers and a collector; three identical cavities are arranged in the housing, and one signal current and voltage transformer is arranged in each cavity; and the collector is arranged outside the housing. The current and voltage transformer has low power consumption, high measurement precision of a coil, fast response and strong anti-short circuit capability; the hollow coil is used for collecting alternating current ripple signals, thereby having the characteristics of no saturation, wide measurement frequency bandwidth and the like; a low level electrode can output very accurate voltage under the situation of a certain capacitor-divider ratio; the electronic current and voltage transformer has complete self-checking function; and a protecting device can directly judge abnormalities of the transformer because the protecting device receives a fault identifier or does not receive data which is checked to be correct in case of communication faults or sampling abnormalities, and a front panel of a combiner can emit a warning instruction.
Description
Technical field
The utility model relates to the high-tension measurement field, and a kind of 126kVGIS especially is provided the electronic type current-voltage transformer.
Technical background
Along with the continuous development of high voltage power transmission technology, electric system also improves constantly the requirement of power equipment.Requirement to the GIS combined electrical apparatus is to finish more integrated, more modular improvement under high reliability and high-precision prerequisite.Raising Operation of Electric Systems safety coefficient that so just can be bigger also can be saved golden day by day expensive soil in larger scope.Making the GIS product more integrated, is the another difficulty of GIS product technology development.
Once more; progressively enforcement along with the strong intelligent grid policy of nation-building; electronic type equipment will be widely used at aspects such as high frequency current measurement, relay protection, localization of fault, comprehensive automations with its significant superiority characteristics, and very fast by everybody reception.
Therefore proposed a kind of current transformer and voltage transformer (VT) can be combined join the electronic current voltage transformer (VT) that GIS uses.And the development of the current-voltage transformer of highly integrated and high modular feature is arranged.Make each part standard of GIS, can be according to different demand combinations, convenient and practical.Also make between the equipment and between each equipment component the information transmission become digital signal and utilize Optical Fiber Transmission, thoroughly solve the restriction of device interior insulation to equipment volume.
The utility model content
The purpose of this utility model is to provide a kind of and realizes high-acruracy survey, protects, joins GIS electronic type current-voltage transformer on a large scale.The technical problems to be solved in the utility model is: 1,126kVGIS realizes the iron core calculation of parameter of high-acruracy survey and large-range measuring, and reduces coil dimension as far as possible with the designing technique of current-voltage transformer coil; 2,126kVGIS electronic type current-voltage transformer voltage measurement partial design technology; 3,126kVGIS electronic type current-voltage transformer experimental technique and method: the designing technique of experimental technique and loop parameter, the control resist technology of test loop; 4,126kVGIS electronic type current-voltage transformer secondary partial design; 5,126kVGIS peculiar structural design of electronic type current-voltage transformer and manufacturing technology.
The purpose of this utility model is to overcome the shortcoming of above-mentioned prior art, and a kind of 126kVGIS is provided the electronic type current-voltage transformer, and described electronic current voltage transformer (VT) comprises the body, individual event current-voltage transformer and collector; Be provided with three identical cavitys in the described body, all be provided with an individual event current-voltage transformer in each cavity; Described body outer setting has collector.
Described individual event current-voltage transformer is that (the Rogowsk coil is international call, and translator of Chinese is the most common to be that " Luo-coil ", stream press dead ring, low-field electrode, the middle piezoelectricity utmost point, shielding support, voltage output end, guard signal lead-out terminal and measuring-signal lead-out terminal to constitute by current transformer shielding, low-power consumption coil, Rogowsk coil; Described stream presses insulcrete with the piezoelectricity utmost point and low-field electrode electrical isolation in current transformer shielding, the voltage transformer (VT); Be fixed with a low-power consumption coil and two Rogowsk coils in the described current transformer shielding.
Described body two ends are provided with two flanges respectively, and three individual event current-voltage transformers are fixed on body inside by flange.
Be connected with merge cells, multimode optical fiber, monitoring record instrument and protective device on the described collector.Characteristics of the present utility model are as follows: 1. adopt the low-power consumption coil to realize the extraction of measuring-signal.Low-power consumption coil measuring accuracy height, response is fast, and anti-short circuit capability is strong; 2. adopt the Rogowsk coil to realize the extraction of measuring-signal.Air core coil is gathered the AC ripple signal, have no saturated, measure characteristics 3. such as bandwidth and utilize the capacitance partial pressure principle, utilize its special structure design, export voltage very accurately at certain capacitance partial pressure than rudimentary electrode under the situation; 4.126kVGIS possess complete self-checking function with the electronic type current-voltage transformer; 5. if communication failure occurs or sampling is unusual, protective device will can send the alarm indication because of receiving error identification or can not receive the correct data of verification that can directly to judge mutual inductor unusual on the combiner front panel.
Description of drawings
Fig. 1 is a current-voltage transformer side view of the present utility model; Fig. 2 partly cuts open figure for current-voltage transformer of the present utility model; Fig. 3 is an individual event current-voltage transformer structural representation of the present utility model.
Wherein: 1 is the body; 2 are the individual event current-voltage transformer; 3 is collector; 4 are the current transformer shielding; 5 are the low-power consumption coil; 6 is the Rogowsk coil; 7 are stream pressure dead ring; 8 is low-field electrode; 9 is the middle piezoelectricity utmost point; 10 are the shielding support; 11 is voltage output end; 12 is the guard signal lead-out terminal; 13 is the measuring-signal lead-out terminal.
Embodiment
Below in conjunction with accompanying drawing the utility model is done and to be described in further detail: referring to Fig. 1,2,3, a kind of 126kVGIS electronic type current-voltage transformer, described electronic current voltage transformer (VT) comprises the body, individual event current-voltage transformer and collector; Be provided with three identical cavitys in the described body, all be provided with an individual event current-voltage transformer in each cavity; Described body outer setting has collector.
Described individual event current-voltage transformer is to press dead ring, low-field electrode, the middle piezoelectricity utmost point, shielding support, voltage output end, guard signal lead-out terminal and measuring-signal lead-out terminal to constitute by current transformer shielding, low-power consumption coil, Rogowsk coil, stream; Described stream presses insulcrete with the piezoelectricity utmost point and low-field electrode electrical isolation in current transformer shielding, the voltage transformer (VT); Be fixed with a low-power consumption coil and two Rogowsk coils in the described current transformer shielding.
Described body two ends are provided with two flanges respectively, and three individual event current-voltage transformers are fixed on body inside by flange.
Be connected with merge cells, multimode optical fiber, monitoring record instrument and protective device on the described collector.
With reference to Fig. 1,126kVGIS is A, B, the C item of three corresponding electric system of difference of three coenosarc electronic current voltage transformer (VT) with the electronic type current-voltage transformer.Two flanges of these three usefulness are fixed on the body, exert pressure three are fixed on the body in two ends, and guarantee that how much in these three electronic current voltage transformer (VT) are parallel.Current transformer partly is installed on system's inlet wire and surveys, and voltage transformer (VT) partly is installed on system's inlet wire and surveys.126kVGIS places body outside with electronic type current-voltage transformer secondary device collector, and collector becomes the collection of simulant signal of current transformer and voltage transformer (VT) light pulse and extract to convert digital signal to.The light signal of collector output carries out signal analysis and processing by Optical Fiber Transmission to merge cells, and merge cells can be finished promptings such as default self check, abnormal signal, warning according to Processing Structure.Send the branch circle to isolating switch in case of necessity or close the circle instruction.
With reference to Fig. 2,126kVGIS is divided into by effect with electronic type current-voltage transformer secondary device part: collector, merge cells, multimode optical fiber, monitoring record instrument, protective device 5 parts.Secondary device can be adjusted the installation site of secondary device according to the different engineering demand of GIS, can satisfy under the varying environment and use.Can also insert 126kVGIS electronic type current-voltage transformer terminal box part to collector, the transmission of product external information becomes digital transmission fully like this.The favourable person, device security avoid open circuit dangerous.
With reference to Fig. 3, figure is that 126kVGIS is with individual event structure principle chart in the electronic type current-voltage transformer, with flowing the pressure insulcrete with the piezoelectricity utmost point, low-field electrode electrical isolation in current transformer shielding and the voltage transformer (VT).A low-power consumption coil and two Rogowsk coils are fixed in the current transformer shielding.System power passes from current transformer shielding geometric center, can obtain induction current I1 at measuring-signal lead-out terminal place according to law of electromagnetic induction low-power consumption coil.The Rogowsk coil can obtain voltage U 1 at the guard signal lead-out terminal.When the fixed partial pressure ratio that system voltage forms according to the law of partial pressure and this product structure by the voltage transformer (VT) part, meeting obtain voltage U 2 between the middle piezoelectricity utmost point and low-field electrode.Electric current 11, voltage U 2, voltage U 1 are carried out signals collecting and digital-to-analog conversion by cable transmission to Current Transformer Secondary part collector.
Above content is to further describing that the present invention did in conjunction with concrete preferred implementation; can not assert that the specific embodiment of the present invention only limits to this; for the general technical staff of the technical field of the invention; without departing from the inventive concept of the premise; can also make some simple deduction or replace, all should be considered as belonging to the present invention and determine scope of patent protection by claims of being submitted to.
Claims (4)
1.126kVGIS use the electronic type current-voltage transformer, it is characterized in that: described electronic current voltage transformer (VT) comprises the body, individual event current-voltage transformer and collector; Be provided with three identical cavitys in the described body, all be provided with an individual event current-voltage transformer in each cavity; Described body outer setting has collector.
2. 126kVGIS electronic type current-voltage transformer according to claim 1, it is characterized in that: described individual event current-voltage transformer is to press dead ring, low-field electrode, the middle piezoelectricity utmost point, shielding support, voltage output end, guard signal lead-out terminal and measuring-signal lead-out terminal to constitute by current transformer shielding, low-power consumption coil, Rogowsk coil, stream; Described stream presses insulcrete with the piezoelectricity utmost point and low-field electrode electrical isolation in current transformer shielding, the voltage transformer (VT); Be fixed with a low-power consumption coil and two Rogowsk coils in the described current transformer shielding.
3. 126kVGIS electronic type current-voltage transformer according to claim 1, it is characterized in that: described body two ends are provided with two flanges respectively, and three individual event current-voltage transformers are fixed on body inside by flange.
4. 126kVGIS electronic type current-voltage transformer according to claim 1 is characterized in that: be connected with merge cells, multimode optical fiber, monitoring record instrument and protective device on the described collector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202204509U CN201716355U (en) | 2010-06-10 | 2010-06-10 | Electronic current and voltage transformer for 126kVGIS |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202204509U CN201716355U (en) | 2010-06-10 | 2010-06-10 | Electronic current and voltage transformer for 126kVGIS |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201716355U true CN201716355U (en) | 2011-01-19 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202204509U Expired - Lifetime CN201716355U (en) | 2010-06-10 | 2010-06-10 | Electronic current and voltage transformer for 126kVGIS |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201716355U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102684145A (en) * | 2012-04-28 | 2012-09-19 | 辽宁省电力有限公司朝阳供电公司 | Sampling data exception detecting method and relay protection method based on redundant CT windings |
| CN102914678A (en) * | 2011-09-26 | 2013-02-06 | 北京航天时代光电科技有限公司 | Tank-type tri-phase optical voltage transformer |
| CN103364605A (en) * | 2012-03-27 | 2013-10-23 | 成都驹涛网络科技有限公司 | Novel photoelectric integrated current/voltage mutual inductor |
| CN103713175A (en) * | 2013-12-24 | 2014-04-09 | 北京航天时代光电科技有限公司 | Combined optical transformer for novel GIS |
| CN104569515A (en) * | 2014-12-11 | 2015-04-29 | 许继集团有限公司 | Shielding structure and common-tank electronic voltage transformer adopting same |
| CN105719888A (en) * | 2016-04-28 | 2016-06-29 | 国网吉林省电力有限公司电力科学研究院 | Integrated electronic current and voltage transformer circuit breaker |
-
2010
- 2010-06-10 CN CN2010202204509U patent/CN201716355U/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102914678A (en) * | 2011-09-26 | 2013-02-06 | 北京航天时代光电科技有限公司 | Tank-type tri-phase optical voltage transformer |
| CN102914678B (en) * | 2011-09-26 | 2013-06-05 | 北京航天时代光电科技有限公司 | Tank-type tri-phase optical voltage transformer |
| CN103364605A (en) * | 2012-03-27 | 2013-10-23 | 成都驹涛网络科技有限公司 | Novel photoelectric integrated current/voltage mutual inductor |
| CN102684145A (en) * | 2012-04-28 | 2012-09-19 | 辽宁省电力有限公司朝阳供电公司 | Sampling data exception detecting method and relay protection method based on redundant CT windings |
| CN102684145B (en) * | 2012-04-28 | 2014-04-23 | 辽宁省电力有限公司朝阳供电公司 | Sampling data exception detecting method and relay protection method based on redundant CT windings |
| CN103713175A (en) * | 2013-12-24 | 2014-04-09 | 北京航天时代光电科技有限公司 | Combined optical transformer for novel GIS |
| CN104569515A (en) * | 2014-12-11 | 2015-04-29 | 许继集团有限公司 | Shielding structure and common-tank electronic voltage transformer adopting same |
| CN104569515B (en) * | 2014-12-11 | 2017-08-08 | 许继集团有限公司 | A kind of shielding construction and the common case electronic type voltage transformer using this structure |
| CN105719888A (en) * | 2016-04-28 | 2016-06-29 | 国网吉林省电力有限公司电力科学研究院 | Integrated electronic current and voltage transformer circuit breaker |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110119 |
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| CX01 | Expiry of patent term |