CN109149573A - A kind of intelligent power distribution ring device adjusted based on TCR - Google Patents
A kind of intelligent power distribution ring device adjusted based on TCR Download PDFInfo
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- CN109149573A CN109149573A CN201811123012.8A CN201811123012A CN109149573A CN 109149573 A CN109149573 A CN 109149573A CN 201811123012 A CN201811123012 A CN 201811123012A CN 109149573 A CN109149573 A CN 109149573A
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Abstract
A kind of intelligent power distribution ring device adjusted based on TCR provided by the present application, applied in the first line and the second route of cyclization, including the first PT signal picker, the 2nd PT signal picker, the first CT signal picker, the 2nd CT signal picker and intelligent cyclization switch, the first PT signal picker and the first CT signal picker are series in first line and are electrically connected with one end of intelligent cyclization switch；2nd PT signal picker and the 2nd CT signal picker are series on the second route and are electrically connected with the other end of intelligent cyclization switch；Intelligent cyclization switch includes synchronizing switch and TCR device successively in parallel；Intelligent cyclization switch is according to the current differential between collecting voltage and current signals two routes of acquisition, when current differential is more than certain value, control is to the biggish side compensating impedance of electric current, and then the circulation between route is reduced, Loop Closing Operation is favorably accomplished, the reliability of power supply is improved.
Description
Technical field
This application involves distribution network technology field more particularly to a kind of intelligent power distribution ring devices adjusted based on TCR.
Background technique
It with the continuous quickening of society advancement, is continuously improved for the requirement to power supply reliability, and power supply reliability is
The main indicator of electric system quality and function is measured, correspondingly, power distribution network is also at during continuous development, is formd
The mode of " closed loop wiring, open loop operation ", when closed loop when a certain section of route breaks down, another section of route can be without sewing up
It replaces.
When power distribution network needs to carry out load transfer or line maintenance, conventional method is using the side for turning power supply that has a power failure
Formula, nowadays this mode has been unable to meet the demand of user, needs to realize electric load using the method for Loop Closing Operation thus
Transfer, cyclization are that route, transformer or switch are worn to the operation for constituting Network Closing operation.
But because of two side bus of cyclization switch or route, there are phase sequence, phase, voltage, compound, power factor and systems
The reasons such as comprehensive impedance be unsatisfactory for the requirement of safe cyclization, may make to generate excessive circulation in Loop Closing Operation, overcurrent is caused to be protected
Shield or fast tripping protection malfunction, or even larger range of power failure occurs, therefore, to avoid generating unnecessary failure, it is necessary to
Entire cyclization network is analyzed before Loop Closing Operation, acquire cyclization before voltage and current, and acquire the voltage before cyclization and
Electric current is since the voltage in route is higher and electric current is larger, at this time it is generally necessary to PT (i.e. voltage transformer) and CT (Current Mutual Inductance
Device) high voltage and high current are carried out being converted to low-voltage and low current, movement TCR is also needed in the operating process of cyclization (i.e.
Thyristor controls electric controller) the total reactive power stabilizer of maintenance power grid, improves effective and actual reduction circulation to provide
Device, to going on smoothly Loop Closing Operation with important practical significance.
Summary of the invention
This application provides a kind of intelligent power distribution ring devices adjusted based on TCR, to reduce the circulation in Loop Closing Operation,
Smoothly complete Loop Closing Operation.
In order to solve the above-mentioned technical problem, the embodiment of the present application discloses following technical solution:
It is provided by the present application it is a kind of based on TCR adjust intelligent power distribution ring device, applied to cyclization first line and
On second route, comprising: the first PT signal picker, the 2nd PT signal picker, the first CT signal picker, the 2nd CT signal
Collector and intelligent cyclization switch, in which:
The first PT signal picker and the first CT signal picker be series in the first line and with institute
State one end electrical connection of intelligent cyclization switch；
The 2nd PT signal picker and the 2nd CT signal picker be series on second route and with institute
State the other end electrical connection of intelligent cyclization switch；
The intelligence cyclization switch includes synchronizing switch and TCR device successively in parallel；
The first PT signal picker and the first CT signal picker are respectively used to acquire the first line
Voltage and current；
The 2nd PT signal picker and the 2nd CT signal picker are respectively used to acquire second route
Voltage and current.
Preferably, the synchronizing switch is used for when the voltage and voltage phase angle in the first line and second route
When equal；By controlling the angle of flow of the TCR device for impedance-compensated.
Preferably, the TCR device includes the reactor of thyristor control, the thyristor-controlled reactor and capacitor
It is in parallel.
Preferably, the intelligent cyclization switch further includes by-pass switch, the by-pass switch and the synchronizing switch and TCR
Device is in parallel.
Preferably, programmable control chip is equipped in the intelligent cyclization switch.
Preferably, the intelligent cyclization switch is according to formulaAcquisition states
The difference between currents I of one route and second route；
Wherein, δ1And δ2The voltage phase angle of the respectively described first line and second route；U is the first line
With the voltage difference of second route, S is series compensation degrees, XLAnd XTCRRespectively route induction reactance and TCR induction reactance.
Compared with prior art, the application has the beneficial effect that
It is provided by the present application it is a kind of based on TCR adjust intelligent power distribution ring device, applied to cyclization first line and
On second route, comprising: the first PT signal picker, the 2nd PT signal picker, the first CT signal picker, the 2nd CT signal
Collector and intelligent cyclization switch, in which: the first PT signal picker and the first CT signal picker are series at institute
It states in first line and is electrically connected with one end of the intelligent cyclization switch；The 2nd PT signal picker and the 2nd CT
Signal picker is series on second route and is electrically connected with the other end of the intelligent cyclization switch；The intelligence cyclization
Switch includes synchronizing switch and TCR device successively in parallel；The first PT signal picker and the first CT signal acquisition
Device is respectively used to acquire the voltage and current of the first line；The 2nd PT signal picker and the 2nd CT signal are adopted
Storage is respectively used to acquire the voltage and current of second route.In this way, the first PT signal picker, the first CT
Signal picker, the 2nd PT signal picker, the 2nd CT signal picker are respectively by the first line of acquisition and
The voltage and current signals of two routes pass to intelligent cyclization switch, and the intelligence cyclization switch basis collects voltage and current
Signal carries out logical operation, obtains the current differential of first line and the second route, the intelligence when current differential is more than certain numerical value
Can in cyclization switch control TCR device thyristor Trigger Angle, impedance is compensated to the biggish side route of electric current, by into
Row is impedance-compensated, changes the current value for flowing through reactor, reduces the electric current in the larger side route of electric current, can balance First Line
Electric current between road and the second route avoids generating biggish dash current in cyclization, and then first when reduction Loop Closing Operation
Circulation between route and the second route, when intelligent cyclization switch judges the voltage and electricity of first line and the second route both ends
Synchronizing switch asynchronous switch-on is controlled when pressing phase angle equal, Loop Closing Operation is favorably accomplished, improves the reliability of power supply.
It should be understood that above general description and following detailed description be only it is exemplary and explanatory, not
The application can be limited.
Detailed description of the invention
In order to illustrate more clearly of the technical solution of the application, letter will be made to attached drawing needed in the embodiment below
Singly introduce, it should be apparent that, for those of ordinary skills, without creative efforts, also
Other drawings may be obtained according to these drawings without any creative labor.
Fig. 1 is a kind of structural schematic diagram of intelligent power distribution ring device adjusted based on TCR provided by the present application；
Fig. 2 is the intelligent cyclization switch in a kind of intelligent power distribution ring device adjusted based on TCR provided by the present application
Structural schematic diagram.
Description of symbols: the first PT signal picker of 1-, the 2nd PT signal picker of 2-, the first CT signal acquisition of 3-
Device, the 2nd CT signal picker of 4-, 5- intelligence cyclization switch, 6- synchronizing switch, 7-TCR device, 8- by-pass switch, 71- capacitor
Device, 72- reactor.
Specific embodiment
In order to make those skilled in the art better understand the technical solutions in the application, below in conjunction with the application reality
The attached drawing in example is applied, the technical scheme in the embodiment of the application is clearly and completely described, it is clear that described implementation
Example is only some embodiments of the present application, rather than whole embodiments.Based on the embodiment in the application, the common skill in this field
The application protection all should belong in art personnel every other embodiment obtained without making creative work
Range.
The transfer of electric load is now realized using the method for Loop Closing Operation, but because two side bus of cyclization switch or route are deposited
It is unsatisfactory for the requirement of safe cyclization in the reasons such as comprehensive impedance of phase sequence, phase, voltage, compound, power factor and system, it may
Make to generate excessive circulation in Loop Closing Operation, causes overcurrent protection or fast tripping protection malfunction, or even larger range of power failure occurs, because
This, to avoid generating unnecessary failure, it is necessary to entire cyclization network be analyzed before Loop Closing Operation, before acquiring cyclization
Voltage and current, provide improve it is effective and it is actual reduce circulation device, to go on smoothly Loop Closing Operation have it is important
Practical significance.
It is provided by the present application it is a kind of based on TCR adjust intelligent power distribution ring device, applied to cyclization first line and
On second route, comprising: the first PT signal picker 1, the 2nd PT signal picker 2, the first CT signal picker 3, the 2nd CT
Signal picker 4 and intelligent cyclization switch 5, referring particularly to Fig. 1, Fig. 1 is a kind of intelligence adjusted based on TCR provided by the present application
The structural schematic diagram of energy distribution ring device；Wherein: the first PT signal picker 1 and the first CT signal picker 3
It is respectively used to acquire the voltage and current of the first line；The 2nd PT signal picker 2 and the 2nd CT signal are adopted
Storage 4 is respectively used to acquire the voltage and current of second route.
The first PT signal picker 1 and the first CT signal picker 3 be series in the first line and with
One end electrical connection of the intelligence cyclization switch 5；The first PT signal picker 1 described in this way and the first CT signal picker
3 can pass to the voltage and current signals collected in first line intelligent cyclization switch 5.
The 2nd PT signal picker 2 and the 2nd CT signal picker 4 be series on second route and with
The other end electrical connection of the intelligence cyclization switch 5；In this way, the 2nd PT signal picker 2 and the 2nd CT signal are adopted
The voltage and current signals collected on the second route can be passed to intelligent cyclization switch 5 by storage 4.
The intelligence cyclization switch 5 includes synchronizing switch 6 and TCR device 7 successively in parallel；Referring particularly to Fig. 2, Fig. 2
For it is provided by the present application it is a kind of based on TCR adjust intelligent power distribution ring device in intelligent cyclization switch structural schematic diagram；
Intelligent cyclization switch 5 obtains the current differential of first line and the second route according to voltage and current signals are received why
The purpose of obtaining current differential rather than voltage difference is the appearance that greater impact electric current in route is avoided for monitoring current；Work as intelligence
When cyclization switch 5 recognizes the current differential between first line and the second route more than certain numerical value, specifically, with first line
It is reference with the voltage rating on the second route, when being more than the 10% of voltage rating, intelligent cyclization switch 5 controls TCR at this time
The angle of flow of the thyristor of device 7 is impedance-compensated to the progress of electric current biggish side route, to reduce the electric current on the side line road, is
Avoid the generation of greater impact electric current when cyclization that TCR device 7 can be preset as maximum compensation in the actual operation process
Mode, when intelligent cyclization switch 5 recognizes the voltage and equal voltage phase angle of first line and the second route two sides, intelligence at this time
Energy cyclization switch 5 controls 6 asynchronous switch-on of synchronizing switch, since the TCR device 7 being originally arranged is maximum compensation way, needs at this time
The angle of flow of the thyristor of TCR device 7 is gradually controlled, is gradually reduced impedance-compensated from maximum compensation, until intelligent cyclization
It is consistent with the two sides electric current of the second route that switch 5 recognizes first line, and it is minimum to carry out circulation when Loop Closing Operation at this time, so as to
Loop Closing Operation is favorably accomplished, the reliability of power supply is improved.
Further, the synchronizing switch 6 is used for when the voltage and voltage in the first line and second route
When phase angle is equal；By the angle of flow of the control TCR device 7 for impedance-compensated, impedance refers in circuit as its name suggests
To the inhibition that alternating current rises, when progress is impedance-compensated is, the electric current in circuit can reduce；The TCR device 7 includes
The reactor 72 of the reactor 72 of thyristor control, the thyristor control is in parallel with capacitor, and specifically thyristor is with right
Anti-parallel thyristor, when the angle of flow of thyristor is larger, the most of circulation inductance of electric current in circuit, when the conducting of thyristor
Electric current major part circulation capacitor when angle is smaller, in circuit；Trigger Angle by controlling the thyristor of TCR device 7 changes brilliant lock
The angle of flow of pipe changes the electric current for flowing through reactor, different electric currents can be obtained, to carry out to the biggish side route of electric current
It is impedance-compensated, specifically, the Trigger Angle of thyristor is generally adjusted within the scope of 90 °~180 °, when Trigger Angle is at 90 °~140 °
When in range, the equivalent impedance in circuit is at this time emotional resistance compensation, when Trigger Angle is within the scope of 145 °~180 ° in perception
When, the equivalent impedance in circuit is in capacitive, is at this time capacitive reactances compensation.By controlling the Trigger Angle of thyristor, change brilliant lock
The angle of flow of pipe can continuously adjust the electric current for flowing through reactor, and when thyristor is blocked, the electric current for flowing through reactor is 0,
When thyristor is connected entirely, the electric current for flowing through reactance is maximum value, i.e. electric current changes 0 between maximum value, is equivalent to change
The equivalent reactance value of reactor；It capacitor 71 can also be controlled issues different reactive powers simultaneously, reach and maintain the power grid total
The purpose of reactive power stabilizer.
Further, the intelligent cyclization switch 5 further includes by-pass switch 8, the by-pass switch 8 and the synchronizing switch
6 and TCR device 7 is in parallel.When needing to carry out load transfer or line maintenance to intelligent cyclization switch 5, if directly being carried out to it
Have a power failure and will affect the electricity consumption of user, therefore the application is provided with by-pass switch 8, when needs carry out load to intelligent cyclization switch 5
When transfer or line maintenance, by-pass switch 8 can be closed at this time, it is examined into load transfer or route to realize and not have a power failure
It repairs.
Further, programmable control chip is equipped in the intelligent cyclization switch 5；Intelligent cyclization switch 5 can be completed
Logical operation and arbitration functions rely primarily on the programmable control chip being arranged inside.
Further, the intelligent cyclization switch 5 is according to formulaAcquisition is stated
The difference between currents I of first line and second route；
Wherein, δ1And δ2The voltage phase angle of the respectively described first line and second route；U is the first line
With the voltage difference of second route, S is series compensation degrees, specifically, S=XC/XL, XCAnd XLRespectively route capacitive reactance and induction reactance, XL
And XTCRRespectively route induction reactance and TCR induction reactance；In the actual operation process, δ1And δ2The respectively described first line and described
The voltage phase angle of two routes；U is the voltage difference of the first line and second route, and S is series compensation degrees, XLAnd XTCRRespectively
For route induction reactance and TCR induction reactance by the first PT signal picker 1, the 2nd PT signal picker 2, the first CT signal picker 3,
2nd CT signal picker 4 is acquired, and passes data to intelligent cyclization switch 5 after acquisition, and intelligent cyclization switch 5 is according to above-mentioned
Company carries out logical operation, the purpose of why obtaining current differential rather than voltage difference be avoided for monitoring current in route compared with
The appearance of large inrush current.
Since embodiment of above is that reference combination is illustrated on other modes, have between different embodiments
There is identical part, identical, similar part may refer to each other between each embodiment in this specification.Herein no longer in detail
It illustrates.
Those skilled in the art will readily occur to its of the application after considering specification and practicing the disclosure invented here
His embodiment.This application is intended to cover any variations, uses, or adaptations of the invention, these modifications, purposes or
Person's adaptive change follows the general principle of the application and including the undocumented common knowledge in the art of the application
Or conventional techniques.The description and examples are only to be considered as illustrative, and the true scope and spirit of the application are wanted by right
The content asked is pointed out.
Above-described the application embodiment does not constitute the restriction to the application protection scope.
Claims (6)
1. a kind of intelligent power distribution ring device adjusted based on TCR, special applied in the first line and the second route of cyclization
Sign is, comprising: the first PT signal picker (1), the 2nd PT signal picker (2), the first CT signal picker (3), second
CT signal picker (4) and intelligent cyclization switch (5), in which:
The first PT signal picker (1) and the first CT signal picker (3) be series in the first line and with
One end electrical connection of the intelligence cyclization switch (5)；
The 2nd PT signal picker (2) and the 2nd CT signal picker (4) be series on second route and with
The other end electrical connection of the intelligence cyclization switch (5)；
The intelligence cyclization switch (5) includes synchronizing switch (6) and TCR device (7) successively in parallel；
The first PT signal picker (1) and the first CT signal picker (3) are respectively used to acquire the first line
Voltage and current；
The 2nd PT signal picker (2) and the 2nd CT signal picker (4) are respectively used to acquire second route
Voltage and current.
2. the apparatus according to claim 1, which is characterized in that the synchronizing switch (6) be used for when the first line and
When voltage and equal voltage phase angle on second route；
By controlling the angle of flow of the TCR device (7) for impedance-compensated.
3. the apparatus according to claim 1, which is characterized in that the TCR device (7) includes the reactor of thyristor control
(72), the reactor (72) of the thyristor control is in parallel with capacitor (71).
4. the apparatus according to claim 1, which is characterized in that the intelligence cyclization switch (5) further includes by-pass switch
(8), the by-pass switch (8) is in parallel with the synchronizing switch (6) and TCR device (7).
5. the apparatus according to claim 1, which is characterized in that be equipped with PLC technology in the intelligence cyclization switch (5)
Chip.
6. the apparatus according to claim 1, which is characterized in that the intelligence cyclization switch (5) is according to formulaObtain the difference between currents I for stating first line and second route；
Wherein, δ1And δ2The voltage phase angle of the respectively described first line and second route；U is the first line and institute
The voltage difference of the second route is stated, S is series compensation degrees, XLAnd XTCRRespectively route induction reactance and TCR induction reactance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811123012.8A CN109149573A (en) | 2018-09-26 | 2018-09-26 | A kind of intelligent power distribution ring device adjusted based on TCR |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811123012.8A CN109149573A (en) | 2018-09-26 | 2018-09-26 | A kind of intelligent power distribution ring device adjusted based on TCR |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113872194A (en) * | 2021-09-28 | 2021-12-31 | 国网江苏省电力有限公司电力科学研究院 | Mobile distribution line loop closing hot reversing operation device and method |
| CN115173395A (en) * | 2022-06-01 | 2022-10-11 | 广东电网有限责任公司广州供电局 | Power distribution network seamless loop closing transfer device based on dynamic impedance compensation |
| CN116599328A (en) * | 2023-07-17 | 2023-08-15 | 核工业西南物理研究院 | Module, system and method for parallel current sharing real-time adjustment of thyristor power bridge arm |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1224264A (en) * | 1998-01-20 | 1999-07-28 | 三菱电机株式会社 | Compensation control arrangement for power system |
| JP2000078755A (en) * | 1998-09-01 | 2000-03-14 | Nissin Electric Co Ltd | System interlocking apparatus |
| CN201134619Y (en) * | 2007-12-29 | 2008-10-15 | 重庆市电力公司城区供电局 | Loop-closed electricity switching device for 10KV distributing network |
| CN102074973A (en) * | 2011-01-18 | 2011-05-25 | 国网电力科学研究院武汉南瑞有限责任公司 | Hosting mode-based distributed power supply synchronizing method and device |
| CN107294100A (en) * | 2017-06-22 | 2017-10-24 | 武汉大学 | A kind of power distribution network flexible AC interconnect device |
| CN107492891A (en) * | 2017-08-25 | 2017-12-19 | 国网安徽省电力公司安庆供电公司 | Movable-type intelligent ring device and its application method |
| CN107623328A (en) * | 2017-09-21 | 2018-01-23 | 广东电网有限责任公司惠州供电局 | A kind of method for reducing closed loop network electric current |
| CN207021687U (en) * | 2017-07-24 | 2018-02-16 | 安徽尚途电力保护设备有限公司 | A kind of Quick-type mesohigh series compensation and depth current-limiting apparatus |
| CN108199361A (en) * | 2018-02-05 | 2018-06-22 | 安徽徽电科技股份有限公司 | A kind of high pressure self-shield string mends current limiting system |
-
2018
- 2018-09-26 CN CN201811123012.8A patent/CN109149573A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1224264A (en) * | 1998-01-20 | 1999-07-28 | 三菱电机株式会社 | Compensation control arrangement for power system |
| JP2000078755A (en) * | 1998-09-01 | 2000-03-14 | Nissin Electric Co Ltd | System interlocking apparatus |
| CN201134619Y (en) * | 2007-12-29 | 2008-10-15 | 重庆市电力公司城区供电局 | Loop-closed electricity switching device for 10KV distributing network |
| CN102074973A (en) * | 2011-01-18 | 2011-05-25 | 国网电力科学研究院武汉南瑞有限责任公司 | Hosting mode-based distributed power supply synchronizing method and device |
| CN107294100A (en) * | 2017-06-22 | 2017-10-24 | 武汉大学 | A kind of power distribution network flexible AC interconnect device |
| CN207021687U (en) * | 2017-07-24 | 2018-02-16 | 安徽尚途电力保护设备有限公司 | A kind of Quick-type mesohigh series compensation and depth current-limiting apparatus |
| CN107492891A (en) * | 2017-08-25 | 2017-12-19 | 国网安徽省电力公司安庆供电公司 | Movable-type intelligent ring device and its application method |
| CN107623328A (en) * | 2017-09-21 | 2018-01-23 | 广东电网有限责任公司惠州供电局 | A kind of method for reducing closed loop network electric current |
| CN108199361A (en) * | 2018-02-05 | 2018-06-22 | 安徽徽电科技股份有限公司 | A kind of high pressure self-shield string mends current limiting system |
Non-Patent Citations (3)
| Title |
|---|
| 王榕泽: "锡林浩特市配电网电磁合环倒闸操作应用研究", 《中国优秀硕士学位论文全文数据库 工程科技II辑》 * |
| 王立夫: "《电力电子技术（第2版）》", 31 August 2017, 北京邮电大学出版社 * |
| 艾芊: "《分布式发电与智能电网》", 31 January 2013, 上海交通大学出版社 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113872194A (en) * | 2021-09-28 | 2021-12-31 | 国网江苏省电力有限公司电力科学研究院 | Mobile distribution line loop closing hot reversing operation device and method |
| CN115173395A (en) * | 2022-06-01 | 2022-10-11 | 广东电网有限责任公司广州供电局 | Power distribution network seamless loop closing transfer device based on dynamic impedance compensation |
| CN115173395B (en) * | 2022-06-01 | 2024-05-14 | 广东电网有限责任公司广州供电局 | Distribution network seamless ring power conversion device based on dynamic impedance compensation |
| CN116599328A (en) * | 2023-07-17 | 2023-08-15 | 核工业西南物理研究院 | Module, system and method for parallel current sharing real-time adjustment of thyristor power bridge arm |
| CN116599328B (en) * | 2023-07-17 | 2023-12-08 | 核工业西南物理研究院 | Module, system and method for parallel current sharing real-time adjustment of thyristor power bridge arm |
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Application publication date: 20190104 |
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