CN108896892A - TXLR type effectively earthed system direct current decoupling device - Google Patents
TXLR type effectively earthed system direct current decoupling device Download PDFInfo
- Publication number
- CN108896892A CN108896892A CN201811001812.2A CN201811001812A CN108896892A CN 108896892 A CN108896892 A CN 108896892A CN 201811001812 A CN201811001812 A CN 201811001812A CN 108896892 A CN108896892 A CN 108896892A
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- current
- speed switch
- controller
- block capacitor
- txlr
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- 239000003990 capacitor Substances 0.000 claims abstract description 45
- 230000007935 neutral effect Effects 0.000 claims abstract description 11
- 230000001629 suppression Effects 0.000 claims abstract description 11
- 230000005611 electricity Effects 0.000 claims description 10
- 230000000903 blocking effect Effects 0.000 claims description 7
- 239000012212 insulator Substances 0.000 abstract description 5
- 238000009413 insulation Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000011897 real-time detection Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/08—Limitation or suppression of earth fault currents, e.g. Petersen coil
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Emergency Protection Circuit Devices (AREA)
Abstract
The invention discloses TXLR type effectively earthed system direct current decoupling devices, including controller ZK, current-limiting reactor L, Current Transmit, block capacitor C, power control cabinet, spool voltage limiter, high-speed switch, high-speed switch controller, insulating supporting.The present invention by block capacitor C connect access alternating-current system neutral point arc suppression coil or in, in small resistance loop, pass through block capacitor C isolated DC voltage, to guarantee the normal use of on-line real-time measuremen insulator arrangement, pass through spool voltage limiter fast conducting arc suppression coil earthing system and the ground compensation electric current of small resistance grounding system, limit the both ends block capacitor C overvoltage, the current signal real-time delivery in transformer neutral point circuit is given to controller ZK by Current Transmit, controller ZK issues control electric signal and gives high-speed switch controller, high-speed switch controller controls high-speed switch closure, ensure the normal operation of grounding through arc and low resistance grounding compensation device.
Description
Technical field
The present invention relates to direct current decoupling technology field more particularly to TXLR type effectively earthed system direct current decoupling devices.
Background technique
The failure of electric system and electrical equipment be largely due to caused by the damage of insulation, at present it is internationally recognized
Insulation detecting method is DC superposition method：D. c. voltage signal is superimposed upon running ac high-voltage system or electrical equipment
On, DC voltage converses the dielectric level of system over the ground by the current value that system insulation against ground generates；In high voltage power transmission system
In system, in system of the high-tension transformer neutral point through too small resistance or grounding through arc, in order to on-line real-time measuremen transmission of electricity
The dielectric level of system over the ground need to access direct current decoupling device between small resistance or arc suppression coil and ground connection electricity, to guarantee
The normal use of line real-time detection insulator arrangement, while can solve when power transmission system failure, decoupling capacitance element pair
The influence of neutral point small resistance, arc suppression coil compensation electric current.
Summary of the invention
The present invention is directed to solve at least some of the technical problems in related technologies.For this purpose, of the invention
One purpose is to propose TXLR type effectively earthed system direct current decoupling device, between small resistance or arc suppression coil and ground connection electricity
Direct current decoupling device is accessed, guarantees the normal use of on-line real-time measuremen insulator arrangement, simultaneously turning on fault current prevents small electricity
Resistance, arc suppression coil compensation function occur abnormal.
TXLR type effectively earthed system direct current decoupling device according to an embodiment of the present invention；Including controller ZK, current limliting electricity
Anti- device L, Current Transmit, block capacitor C, power control cabinet, spool voltage limiter, high-speed switch, high-speed switch controller, insulation
Block capacitor C is arranged in support, the power control cabinet inside left, and the block capacitor C is fixedly mounted on the power control cabinet bottom
The current-limiting reactor L is arranged in portion, the upside block capacitor C, and the current-limiting reactor L is solid by device cabinet inner support
It is fixed, it is located at the top the block capacitor C, the controller ZK is set on the upside of the current-limiting reactor L, the controller ZK is solid
Dingan County is on the power control cabinet inner wall, and the current-limiting reactor L is fixed by the insulating supporting, the block capacitor C
The high-speed switch controller is arranged in right side, and the high-speed switch controller is fixedly mounted on the power control cabinet bottom, described fast
Speed switch is fixedly mounted on high-speed switch controller top, and the spool voltage limiter, institute is arranged on the left of the high-speed switch
It states spool voltage limiter and is fixedly mounted on described high-speed switch the two poles of the earth.
Preferably, the block capacitor C ground terminal series current mutual inductor CT, the Current Transmit are fixedly mounted
On the right side of the block capacitor C.
Preferably, the block capacitor C and the current-limiting reactor L the first circuit in series, first circuit,
Spool voltage limiter, high-speed switch are in parallel between any two to constitute second circuit, the second circuit and the Current Transmit string
Connection, the Current Transmit signal output end are connect with the controller ZK signal input part electric signal, the controller ZK
Signal output end is connect with the high-speed switch signal input part electric signal.
Preferably, the second circuit series connection access alternating-current system neutral point arc suppression coil or middle or small resistance loop
In.
In the present invention, when high voltage power transmisson system operates normally, TXLR type effectively earthed system direct current decoupling device is by blocking
Capacitor C in series accesses in alternating-current system neutral point arc suppression coil or middle or small resistance loop, by block capacitor C every
From DC voltage, to guarantee the normal use of on-line real-time measuremen insulator arrangement, pass through spool voltage limiter fast conducting arc blowout wire
The ground compensation electric current of earthed system and small resistance grounding system is enclosed, the both ends block capacitor C overvoltage, AC distribution system are limited
When system ground connection, the conducting of spool voltage limiter makes block capacitor C exit the ground connection of arc coil earthed system and small resistance grounding system
Circuit is compensated, gives the current signal real-time delivery in transformer neutral point circuit to controller ZK by Current Transmit, is controlled
Device ZK issues control electric signal and gives high-speed switch controller, and high-speed switch controller controls high-speed switch closure, release blocking electricity
Energy is stored in container C, by spool voltage limiter and the double bypass of high-speed switch, ensures grounding through arc and low resistance grounding
The normal operation of compensation device simultaneously prevents blocking block capacitor C overvoltage.
Detailed description of the invention
Attached drawing is used to provide further understanding of the present invention, and constitutes part of specification, with reality of the invention
It applies example to be used to explain the present invention together, not be construed as limiting the invention.In the accompanying drawings：
Fig. 1 is the front view of TXLR type effectively earthed system direct current decoupling device proposed by the present invention；
Fig. 2 is the left view of TXLR type effectively earthed system direct current decoupling device proposed by the present invention；
Fig. 3 is the right view of TXLR type effectively earthed system direct current decoupling device proposed by the present invention；
Fig. 4 is the circuit diagram of TXLR type effectively earthed system direct current decoupling device proposed by the present invention；
Fig. 5 is the circuit connection diagram of TXLR type effectively earthed system direct current decoupling device proposed by the present invention.
In figure：1- controller ZK, 2- current-limiting reactor L, 3- Current Transmit, 4- block capacitor C, 5- power control cabinet,
6- spool voltage limiter, 7- high-speed switch, 8- high-speed switch controller, 9- insulating supporting.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.
Examples of the embodiments are shown in the accompanying drawings, and in which the same or similar labels are throughly indicated identical or classes
As element or element with the same or similar functions.The embodiments described below with reference to the accompanying drawings are exemplary, purport
It is being used to explain the present invention, and is being not considered as limiting the invention.
In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside", " up time
The orientation or positional relationship of the instructions such as needle ", " counterclockwise ", " axial direction ", " radial direction ", " circumferential direction " be orientation based on the figure or
Positional relationship is merely for convenience of description of the present invention and simplification of the description, rather than the device or element of indication or suggestion meaning must
There must be specific orientation, be constructed and operated in a specific orientation, therefore be not considered as limiting the invention.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include one or more of the features.In the description of the present invention, the meaning of " plurality " is two or more,
Unless otherwise specifically defined.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc.
Term shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be mechanical connect
It connects, is also possible to be electrically connected；It can be directly connected, can also can be in two elements indirectly connected through an intermediary
The interaction relationship of the connection in portion or two elements.It for the ordinary skill in the art, can be according to specific feelings
Condition understands the concrete meaning of above-mentioned term in the present invention.
Referring to Fig.1-3, TXLR type effectively earthed system direct current decoupling device, including controller ZK 1, current-limiting reactor L
2, Current Transmit 3, block capacitor C 4, power control cabinet 5, spool voltage limiter 6, high-speed switch 7, high-speed switch controller 8,
Block capacitor C4 is arranged in insulating supporting 9,5 inside left of power control cabinet, and block capacitor C 4 is fixedly mounted on 5 bottom of power control cabinet,
Current-limiting reactor L 2 is set on the upside of block capacitor C 4, and current-limiting reactor L 2 is fixed by device cabinet inner support, is located at blocking
4 top capacitor C, controller ZK 1 is arranged on the upside of current-limiting reactor L 2, and controller ZK 1 is fixedly mounted on 5 inner wall of power control cabinet
On, current-limiting reactor L 2 is fixed by insulating supporting 9, and high-speed switch controller 8 is arranged on the right side of block capacitor C 4, quickly opens
It closes controller 8 and is fixedly mounted on 5 bottom of power control cabinet, high-speed switch 7 is fixedly mounted on 8 top of high-speed switch controller, quickly opens
It closes 7 left sides and spool voltage limiter is set, spool voltage limiter 6 is fixedly mounted on 7 the two poles of the earth of high-speed switch；4 ground terminal of block capacitor C
Series current mutual inductor CT 3, Current Transmit 3 are fixedly mounted on 4 right side block capacitor C.
As illustrated in figures 4-5, block capacitor C 4 and first circuit in series of current-limiting reactor L 2, the first circuit, valve
Core voltage limiter 6, high-speed switch 7 are in parallel between any two to constitute second circuit, and second circuit is connected with Current Transmit 3, electric current
3 signal output end of mutual inductor CT is connect with 1 signal input part electric signal of controller ZK, 1 signal output end of controller ZK and fast
Fast 7 signal input part electric signal of switch connection；Second circuit series connection access alternating-current system neutral point arc suppression coil or middle or small
In resistance loop.
Block capacitor C：Model HCDC-2KV 50UF is used for shielding system direct current measurement signal, spool voltage limiter：
Model HDJ0-3000 when there is dash current for route, limits block capacitor using znr MOV
The overvoltage at the both ends C；Current-limiting reactor L：Model HDL-200-50, discharge stream when for limiting block capacitor C electric discharge
Intensity prevents block capacitor C from damaging because of overcurrent；High-speed switch：There is overcurrent for route in model VFC-12/400
When, it is quickly shorted znr MOV, prevents znr MOV through-flow, current transformer for a long time
CT：Model LMZ-0.5, for detecting the size of electric current in route, and real-time delivery gives controller ZK；Controller ZK：For
Line current is detected, route operation conditions is monitored in real time, to quick when electric current is more than setting value or receiving panel manual ringing
Switch controller sends on/off switch order.
In conclusion in the present invention, when high voltage power transmisson system operates normally, TXLR type effectively earthed system direct current decoupling dress
It sets and seals in block capacitor C in transformer neutral point circuit, it is online to guarantee by block capacitor C isolated DC voltage
The normal use of real-time detection insulator arrangement, the present invention pass through spool voltage limiter fast conducting arc suppression coil earthing system and small electricity
The ground compensation electric current of earthed system is hindered, the both ends block capacitor C overvoltage is limited, when alternating-current system is grounded, spool limit
Depressor conducting, makes no longer to increase every the both ends block capacitor C overvoltage, by Current Transmit by transformer neutral point circuit
Current signal real-time delivery give controller ZK, controller ZK issues control electric signal and gives high-speed switch controller, high-speed switch
Controller controls high-speed switch closure, and energy is stored in release block capacitor C, double by spool voltage limiter and high-speed switch
Bypass ensures the normal operation of grounding through arc and low resistance grounding compensation device and prevents blocking block capacitor C excessively electric
Pressure.
In the present invention unless specifically defined or limited otherwise, fisrt feature in the second feature " on " or " down " can be with
It is that the first and second features directly contact or the first and second features pass through intermediary mediate contact.Moreover, fisrt feature exists
Second feature " on ", " top " and " above " but fisrt feature be directly above or diagonally above the second feature, or be merely representative of
First feature horizontal height is higher than second feature.Fisrt feature can be under the second feature " below ", " below " and " below "
One feature is directly under or diagonally below the second feature, or is merely representative of first feature horizontal height less than second feature.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not
Centainly refer to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be any
One or more embodiment or examples in can be combined in any suitable manner.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Anyone skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (4)
1.TXLR type effectively earthed system direct current decoupling device, it is characterised in that：Including controller ZK, current-limiting reactor L, electric current
Mutual inductor CT, block capacitor C, power control cabinet, spool voltage limiter, high-speed switch, high-speed switch controller, insulating supporting, it is described
Block capacitor C is arranged in power control cabinet inside left, and the block capacitor C is fixedly mounted on the power control cabinet bottom, it is described every
The current-limiting reactor L is set on the upside of straight capacitor C, the current-limiting reactor L is fixed by device cabinet inner support, is located at described
The controller ZK is arranged in the top block capacitor C, the upside current-limiting reactor L, and the controller ZK is fixedly mounted on institute
It states on power control cabinet inner wall, the current-limiting reactor L is fixed by the insulating supporting, and institute is arranged on the right side of the block capacitor C
High-speed switch controller is stated, the high-speed switch controller is fixedly mounted on the power control cabinet bottom, and the high-speed switch is fixed
It is mounted on high-speed switch controller top, the spool voltage limiter, the spool pressure limiting are set on the left of the high-speed switch
Device is fixedly mounted on described high-speed switch the two poles of the earth.
2. TXLR type effectively earthed system direct current decoupling device according to claim 1, it is characterised in that：The blocking electricity
Container C ground terminal series current mutual inductor CT, the Current Transmit are fixedly mounted on the right side of the block capacitor C.
3. TXLR type effectively earthed system direct current decoupling device according to claim 1, it is characterised in that：The blocking electricity
Container C and the current-limiting reactor L the first circuit in series, first circuit, spool voltage limiter, high-speed switch two-by-two it
Between it is in parallel constitute second circuit, the second circuit is connected with the Current Transmit, and the Current Transmit signal is defeated
Outlet is connect with the controller ZK signal input part electric signal, and the controller ZK signal output end and the high-speed switch are believed
The connection of number input terminal electric signal.
4. TXLR type effectively earthed system direct current decoupling device according to claim 3, it is characterised in that：Second electricity
In road series connection access alternating-current system neutral point arc suppression coil or middle or small resistance loop.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811001812.2A CN108896892B (en) | 2018-08-30 | 2018-08-30 | TXLR type direct current decoupling device for effective grounding system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811001812.2A CN108896892B (en) | 2018-08-30 | 2018-08-30 | TXLR type direct current decoupling device for effective grounding system |
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| Publication Number | Publication Date |
|---|---|
| CN108896892A true CN108896892A (en) | 2018-11-27 |
| CN108896892B CN108896892B (en) | 2024-05-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811001812.2A Active CN108896892B (en) | 2018-08-30 | 2018-08-30 | TXLR type direct current decoupling device for effective grounding system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024082131A1 (en) * | 2022-10-18 | 2024-04-25 | Siemens Aktiengesellschaft | Converter and control method thereof, electrical device and readable storage medium |
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|---|---|---|---|---|
| JPH11215713A (en) * | 1998-01-20 | 1999-08-06 | Nissin Electric Co Ltd | System fault current detector |
| CN2847637Y (en) * | 2005-11-18 | 2006-12-13 | 中国电力科学研究院 | Device for suppressing transformer neutral point DC current by capacitance method |
| CN102623985A (en) * | 2012-01-17 | 2012-08-01 | 合肥凯高电气设备有限公司 | Novel comprehensive grounding protection and route selection device for medium-voltage power distribution system |
| CN202503284U (en) * | 2012-03-28 | 2012-10-24 | 上海市电力公司 | Capacitance-type direct current inhibiting device |
| CN204794061U (en) * | 2015-07-27 | 2015-11-18 | 国家电网公司 | Transformer dc magnetic biasing suppression device based on multipleization technique |
| CN204903656U (en) * | 2015-08-04 | 2015-12-23 | 国网浙江桐乡市供电公司 | A device for arc suppressing coil ground system measuring circuit direct -to -ground capacitance |
| CN105391028A (en) * | 2015-11-05 | 2016-03-09 | 国网四川省电力公司电力科学研究院 | Neutral-point direct-current elimination resistance-capacitance device of transformer and method |
| CN209086373U (en) * | 2018-08-30 | 2019-07-09 | 北京中联太信科技有限公司 | TXLR type effectively earthed system direct current decoupling device |
-
2018
- 2018-08-30 CN CN201811001812.2A patent/CN108896892B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11215713A (en) * | 1998-01-20 | 1999-08-06 | Nissin Electric Co Ltd | System fault current detector |
| CN2847637Y (en) * | 2005-11-18 | 2006-12-13 | 中国电力科学研究院 | Device for suppressing transformer neutral point DC current by capacitance method |
| CN102623985A (en) * | 2012-01-17 | 2012-08-01 | 合肥凯高电气设备有限公司 | Novel comprehensive grounding protection and route selection device for medium-voltage power distribution system |
| CN202503284U (en) * | 2012-03-28 | 2012-10-24 | 上海市电力公司 | Capacitance-type direct current inhibiting device |
| CN204794061U (en) * | 2015-07-27 | 2015-11-18 | 国家电网公司 | Transformer dc magnetic biasing suppression device based on multipleization technique |
| CN204903656U (en) * | 2015-08-04 | 2015-12-23 | 国网浙江桐乡市供电公司 | A device for arc suppressing coil ground system measuring circuit direct -to -ground capacitance |
| CN105391028A (en) * | 2015-11-05 | 2016-03-09 | 国网四川省电力公司电力科学研究院 | Neutral-point direct-current elimination resistance-capacitance device of transformer and method |
| CN209086373U (en) * | 2018-08-30 | 2019-07-09 | 北京中联太信科技有限公司 | TXLR type effectively earthed system direct current decoupling device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024082131A1 (en) * | 2022-10-18 | 2024-04-25 | Siemens Aktiengesellschaft | Converter and control method thereof, electrical device and readable storage medium |
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|---|---|
| CN108896892B (en) | 2024-05-31 |
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