CN109921380A - A kind of protective device for preventing from moving parallel device reverse charge again - Google Patents
A kind of protective device for preventing from moving parallel device reverse charge again Download PDFInfo
- Publication number
- CN109921380A CN109921380A CN201910106622.5A CN201910106622A CN109921380A CN 109921380 A CN109921380 A CN 109921380A CN 201910106622 A CN201910106622 A CN 201910106622A CN 109921380 A CN109921380 A CN 109921380A
- Authority
- CN
- China
- Prior art keywords
- relay
- contact
- preventing
- reverse charge
- parallel device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Emergency Protection Circuit Devices (AREA)
Abstract
The invention discloses a kind of protective devices for preventing from moving parallel device reverse charge again; including transformer, rectifier and relay; the transformer connection segment bus; the rectifier connects transformer; the control terminal of the relay connects rectifier, the actuating station connection segment bus of the relay and again dynamic parallel device.After the present invention can prevent sectionalized busbar failure, parallel device is moved again and occurs the case where reverse charge, effective protection electric power networks and equipment at work, improves safety and reliability.
Description
Technical field
The present invention relates to a kind of power equipment, in particular to a kind of protection dress for preventing from moving parallel device reverse charge again
It sets.
Background technique
During the actual operation of substation, after a buckling breaks down on sectionalized busbar, need to arrive first substation
Scene is out of service by failure buckling, then simultaneously column voltage moves parallel device again, and the secondary voltage of normal buckling is introduced into failure
Buckling secondary side, the secondary voltage of sectionalized busbar where making failure buckling restore normal.If failure buckling is straight not out of service
It connects and column voltage moves parallel device again, the secondary voltage meeting reverse charge of normal buckling causes failure pressure to failure buckling primary side
Become fault spread, and impact is generated to normal buckling.Therefore a kind of protective device that can prevent reverse charge is needed, is mentioned with this
The safety and reliability of high power equipment.
The utility model of publication number CN204089166U discloses a kind of intelligence PT voltage and moves parallel device again, includes
Dsp processor；It is connected to the communication interface modules of dsp processor；It is connected to the human-machine interface module of dsp processor；It is connected at DSP
Manage the first, second voltage sample module of device；It is connected to the switching input module of dsp processor；The dsp processor connection is patrolled
Control module is collected, there is the output logic control circuit for being connected to dsp processor, the output logic control circuit is connected to survey
Measure that voltage moves again and relay module, protection voltage move again side by side and relay module and metered voltage are moved and side by side again side by side
Relay module.The device is used to acquire the voltage of two sections of sectionalized busbar PT, there are two sections of PT voltages to move again, two sections of PT voltages are simultaneously
Column function, applied to 110KV and the PT voltage of following voltage class moves again and voltage field arranged side by side.
Voltage in above-mentioned documents moves parallel device again, and structure is complicated, and higher cost, safety and reliability are lower.
Summary of the invention
For prior art construction complexity, higher cost, safety and the lower problem of reliability, the invention discloses one
Protective device of the kind for preventing from moving parallel device reverse charge again, can prevent from moving and equipping again in sectionalized busbar voltage failure
It sets and the case where reverse charge occurs, effectively improve the safety and reliability of power equipment and network.
It is technical solution of the present invention below.
A kind of protective device for preventing from moving parallel device reverse charge again, including transformer, rectifier and relay, institute
State transformer connection segment bus, the rectifier connects transformer, and the control terminal of the relay connects rectifier, it is described after
The actuating station connection segment bus of electric appliance and again dynamic parallel device.The friendship of a low-voltage is drawn from sectionalized busbar by transformer
Galvanic electricity, then low-voltage AC electricity is converted to by direct current by rectifier, direct current controls relay, when sectionalized busbar voltage goes out
When existing failure, the alternating current of transformer output and the direct current of rectifier output can be varied widely, and cause relay
There is the case where reverse charge after preventing it from starting, mentions to cut off sectionalized busbar and move the connection of parallel device again in switch change
High safety.
Preferably, the relay includes electromagnet, armature and fixture, the electromagnet connects rectifier, the rank
Iron is detachably connected with fixture, and armature is electrically connected with sectionalized busbar, and the fixture is electrically connected with dynamic parallel device again.In electromagnet
When normal work, armature uniform force is clamped, circuit conducting, when the curent change that electromagnet is subject to, armature stress
It is unbalance, skid off fixture, circuitry cuts.
Preferably, the armature includes bull stick and the contact that bull stick one end is arranged in, the bull stick is close to electromagnet one
Side is equipped with spring, and the spring is compressive state when armature and fixture closure are connected, the contact connection segment bus, contact with
Fixture is detachably connected.Armature in normal work, by the elastic force of spring and the gravitation of opposite direction electromagnet, two kinds of power
Numerical values recited gap is smaller, relatively stable when being clamped, and will not slide.When electromagnet gravitation increases, gravitation is significantly greater than
When elastic force, armature is drawn close toward electromagnet direction, skids off fixture, and cutting executes terminal circuit；When electromagnet gravitation reduces, gravitation is obvious
When less than elastic force, armature is slided toward far from electromagnet direction, is cut off the power.As long as therefore the voltage of sectionalized busbar breaks down,
The connection of armature and fixture just will disconnect.
Preferably, the fixture includes symmetrically arranged a pair of of clamping bar and contact chip, the one of the contact chip and clamping bar
End is rotatably connected, and contact chip is abutted with the contact, and the other end of the clamping bar is fixed, and spring is equipped among two clamping bars,
The spring works have foot with the contact area of contact, guarantee for increasing in tensional state, contact chip in normal work
Enough contacts, when contact skids off, rotatable contact chip reduces resistance suffered by contact, improves reliability.
Preferably, the contact is triangle, contact is inclined-plane with the contact chip place of abutting.It here is the fortune based on contact
Designed by dynamic rail mark.
Preferably, further including duplicate relay, the control terminal of the duplicate relay connects rectifier, duplicate relay
Actuating station connect with the actuating station of above-mentioned main relay.To prevent main relay from breaking down, duplicate relay can be effective
Improve reliability.
Preferably, the outside of the contact chip and clamping bar is equipped with insulating layer.After armature and fixture disconnect, non-
It in the case where active operation, will not voluntarily connect again, prevent danger occur in maintenance, improve safety.
The invention has the benefit that prevent from moving parallel device there is reverse charge at work again, protect electric power networks and
Equipment improves safety and reliability.
Detailed description of the invention
Fig. 1 is the embodiment of the present invention schematic diagram；
Fig. 2 is the embodiment of the present invention partial enlarged view；
Fig. 3 is connection figure of the embodiment of the present invention in power grid；
In figure: 1- transformer, 2- rectifier, 3- armature, 4- fixture, 5- electromagnet, 6- contact chip.
Specific embodiment
The technical program is further elaborated below in conjunction with Figure of description.
Embodiment: being as shown in Figure 1 a kind of protective device for preventing from moving parallel device reverse charge again, including transformer
1, rectifier 2 and relay, the 1 connection segment bus of transformer, the rectifier 2 connect transformer 1, the relay
Control terminal connects rectifier 2, the actuating station connection segment bus of the relay and again dynamic parallel device.By transformer 1 from
Sectionalized busbar draws the alternating current of a low-voltage, then low-voltage AC electricity is converted to direct current, direct current by rectifier 2
Relay is controlled, when sectionalized busbar voltage breaks down, the direct current for alternating current and rectifier 2 output that transformer 1 exports
It can vary widely, cause the switch change of relay, to cut off sectionalized busbar and move the connection of parallel device again, prevent
Only there is the case where reverse charge after its starting, improves safety.
In the present embodiment, the relay includes electromagnet 5, armature 3 and fixture 4, and the electromagnet 5 connects rectifier 2,
The armature 3 is detachably connected with fixture 4, and armature 3 is electrically connected with sectionalized busbar, and the fixture 4 is electrically connected with dynamic parallel device again
It connects.When electromagnet 5 works normally, 3 uniform force of armature is clamped by fixture 4, circuit conducting, when the electric current that electromagnet 5 is subject to
When variation, 3 stress of armature is unbalance, skids off fixture 4, circuitry cuts.
As shown in Fig. 2, the armature 3 includes bull stick and the contact that bull stick one end is arranged in, the bull stick is close to electromagnet 5
It is compressive state, the contact connection segment bus, touching that side, which is equipped with spring when spring, armature 3 and the closure conducting of fixture 4,
Head is detachably connected with fixture 4.Armature 3 in normal work, by the elastic force of spring and the gravitation of opposite direction electromagnet 5,
The numerical values recited gap of two kinds of power is smaller, relatively stable when being clamped by fixture 4, will not slide.When the increase of 5 gravitation of electromagnet, draw
When power is significantly greater than elastic force, armature 3 is drawn close toward 5 direction of electromagnet, skids off fixture 4, and cutting executes terminal circuit；When electromagnet 5 draws
Power reduces, and when gravitation is significantly less than elastic force, armature 3 is slided toward far from 5 direction of electromagnet, cuts off the power.As long as being therefore segmented female
The voltage of line breaks down, and armature 3 and the connection of fixture 4 just will disconnect.
In the present embodiment, the fixture 4 includes symmetrically arranged a pair of of clamping bar and contact chip 6, the contact chip 6 and clamping bar
One end be rotatably connected, contact chip 6 is abutted with the contact, and the other end of the clamping bar is fixed, and is equipped among two clamping bars
Spring, the spring works are in tensional state, and contact chip 6 is used to increase and the contact area of contact, guarantee in normal work
With enough contacts, when contact skids off, rotatable contact chip 6 reduces resistance suffered by contact, improves reliability.
In the present embodiment, the contact is triangle, and contact is inclined-plane with 6 place of abutting of contact chip.It here is based on contact
Motion profile designed by.
Further include duplicate relay in the present embodiment, the control terminal of the duplicate relay connects rectifier 2, it is spare after
The actuating station of electric appliance is connected with the actuating station of above-mentioned main relay.To prevent main relay from breaking down, duplicate relay can
It improves reliability effectively.
In the present embodiment, the outside of the contact chip and clamping bar is equipped with insulating layer.After armature and fixture disconnect,
It in the case where non-active operation, will not voluntarily connect again, prevent danger occur in maintenance, improve safety.
For ease of understanding, the connection figure of embodiment is provided, as shown in figure 3, the series relay at I section of bus 1-1QD7
(1-CDJ) and relay (2-CDJ), series relay (3-CDJ) and relay (4-CDJ) at II section of bus 1-1QD9.When I section
After bus voltage transformer PT1 breaks down, relay 1-CDJ(or 2-CDJ) movement is executed, disconnect normally-closed contact, to make route
It disconnects, II section of bus is similarly.
The present embodiment has the beneficial effect that prevent from moving parallel device again reverse charge occurs at work, protects electric power networks
And equipment, improve safety and reliability.
It should be noted that the specific embodiment is only used for that technical solution is further described, it is not used in and limits the skill
The range of art scheme, any modifications, equivalent substitutions and improvements etc. based on this technical solution are regarded as in protection of the invention
In range.
Claims (7)
1. a kind of protective device for preventing from moving parallel device reverse charge again, which is characterized in that including transformer, rectifier and
Relay, the transformer connection segment bus, the rectifier connect transformer, and the control terminal of the relay connects rectification
Device, the actuating station connection segment bus of the relay and again dynamic parallel device.
2. a kind of protective device for preventing from moving parallel device reverse charge again according to claim 1, which is characterized in that
The relay includes electromagnet, armature and fixture, and the electromagnet connects rectifier, and the armature detachably connects with fixture
It connects, armature is electrically connected with sectionalized busbar, and the fixture is electrically connected with dynamic parallel device again.
3. a kind of protective device for preventing from moving parallel device reverse charge again according to claim 2, which is characterized in that
The armature includes bull stick and the contact that bull stick one end is arranged in, and the bull stick is equipped with spring close to electromagnet side, armature with
The spring is compressive state when fixture closure conducting, the contact connection segment bus, and contact is detachably connected with fixture.
4. a kind of protective device for preventing from moving parallel device reverse charge again according to claim 3, which is characterized in that
The fixture includes symmetrically arranged a pair of of clamping bar and contact chip, and one end of the contact chip and clamping bar is rotatably connected, and is contacted
Piece is abutted with the contact, and the other end of the clamping bar is fixed, and spring is equipped among two clamping bars, and the spring works are stretching
State.
5. a kind of protective device for preventing from moving parallel device reverse charge again according to claim 4, which is characterized in that
The contact is triangle, and contact is inclined-plane with the contact chip place of abutting.
6. a kind of protective device for preventing from moving parallel device reverse charge again according to claim 1, which is characterized in that
It further include duplicate relay, the control terminal of the duplicate relay connects rectifier, the actuating station of duplicate relay and above-mentioned master
The actuating station of relay is connected.
7. a kind of protective device for preventing from moving parallel device reverse charge again according to claim 4 or 5, feature exist
In the outside of the contact chip and clamping bar is equipped with insulating layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910106622.5A CN109921380B (en) | 2019-02-02 | 2019-02-02 | Protection device for preventing re-moving parallel device from reverse charging |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910106622.5A CN109921380B (en) | 2019-02-02 | 2019-02-02 | Protection device for preventing re-moving parallel device from reverse charging |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109921380A true CN109921380A (en) | 2019-06-21 |
| CN109921380B CN109921380B (en) | 2021-05-07 |
Family
ID=66961357
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910106622.5A Active CN109921380B (en) | 2019-02-02 | 2019-02-02 | Protection device for preventing re-moving parallel device from reverse charging |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109921380B (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5210443A (en) * | 1990-10-20 | 1993-05-11 | Maschinenfabrik Reinhausen Gmbh | Process and apparatus for parallel control of tapped transformers |
| CN2336542Y (en) * | 1998-05-27 | 1999-09-01 | 房德育 | Automatic voltage regulating controller for parallel running of two on-load regulating transformer |
| CN2574208Y (en) * | 2002-04-09 | 2003-09-17 | 丁文军 | Integrative earth leakage protector |
| CN201956702U (en) * | 2011-01-30 | 2011-08-31 | 湖南华自科技有限公司 | Automatic synchronous parallel device of microcomputer |
| CN203707759U (en) * | 2013-12-13 | 2014-07-09 | 国网湖南省电力公司常德检修公司 | TV parallel circuit preventing reverse charging |
| CN204089166U (en) * | 2014-09-12 | 2015-01-07 | 杭州霍夫电力自动化设备有限公司 | The heavily dynamic parallel device of intelligence PT voltage |
| CN104333119A (en) * | 2014-10-30 | 2015-02-04 | 国家电网公司 | Voltage parallel device with synchronous detection function |
| CN104993388A (en) * | 2015-06-30 | 2015-10-21 | 国家电网公司 | PT (Potential Transformer) paralleling device applied to transformer substation and voltage fault automatic identification method for PT (Potential Transformer) paralleling device |
| CN206099504U (en) * | 2016-08-30 | 2017-04-12 | 河北旭辉电气股份有限公司 | Device is side by side divided to low voltage network intelligence |
| CN108832624A (en) * | 2018-06-30 | 2018-11-16 | 国网江苏省电力有限公司连云港供电分公司 | Voltage security parallel device |
-
2019
- 2019-02-02 CN CN201910106622.5A patent/CN109921380B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5210443A (en) * | 1990-10-20 | 1993-05-11 | Maschinenfabrik Reinhausen Gmbh | Process and apparatus for parallel control of tapped transformers |
| CN2336542Y (en) * | 1998-05-27 | 1999-09-01 | 房德育 | Automatic voltage regulating controller for parallel running of two on-load regulating transformer |
| CN2574208Y (en) * | 2002-04-09 | 2003-09-17 | 丁文军 | Integrative earth leakage protector |
| CN201956702U (en) * | 2011-01-30 | 2011-08-31 | 湖南华自科技有限公司 | Automatic synchronous parallel device of microcomputer |
| CN203707759U (en) * | 2013-12-13 | 2014-07-09 | 国网湖南省电力公司常德检修公司 | TV parallel circuit preventing reverse charging |
| CN204089166U (en) * | 2014-09-12 | 2015-01-07 | 杭州霍夫电力自动化设备有限公司 | The heavily dynamic parallel device of intelligence PT voltage |
| CN104333119A (en) * | 2014-10-30 | 2015-02-04 | 国家电网公司 | Voltage parallel device with synchronous detection function |
| CN104993388A (en) * | 2015-06-30 | 2015-10-21 | 国家电网公司 | PT (Potential Transformer) paralleling device applied to transformer substation and voltage fault automatic identification method for PT (Potential Transformer) paralleling device |
| CN206099504U (en) * | 2016-08-30 | 2017-04-12 | 河北旭辉电气股份有限公司 | Device is side by side divided to low voltage network intelligence |
| CN108832624A (en) * | 2018-06-30 | 2018-11-16 | 国网江苏省电力有限公司连云港供电分公司 | Voltage security parallel device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109921380B (en) | 2021-05-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP6770965B2 (en) | Decentralized protection system for section feeding of electric rail tow networks | |
| CN101297448B (en) | A converter station | |
| CN110605999B (en) | Measurement and control protection system and method for through type in-phase power supply network | |
| CN103384058B (en) | Based on transformer station's integration failure protection method of territory, station protection | |
| CN103746353A (en) | Self-healing control system of intelligent distribution network and working method thereof | |
| CN106451749B (en) | Emergency protection device and protection method for traction substation control protection system under abnormal working condition | |
| CN103311889A (en) | Manual switching protection circuit for dual power supplies | |
| CN214205087U (en) | Four-incoming-line one-bus-coupler interlocking system of low-voltage power distribution system | |
| CN106329497B (en) | A kind of distribution network failure self-healing dead zone elimination method based on protection for feed line principle of simulation | |
| CN201160223Y (en) | Multi-ring website system | |
| CN209626164U (en) | A kind of safety device for preventing from moving parallel device reverse charge again | |
| CN109921380A (en) | A kind of protective device for preventing from moving parallel device reverse charge again | |
| CN103312028A (en) | Delayed automatic switching starting circuit for dual power supplies | |
| CN210792876U (en) | Measurement and control protection system of through-type in-phase power supply network | |
| Wang et al. | The analysis and simulation of commutation failure and protection strategies | |
| CN201717670U (en) | Dual-power-supply switching device with overvoltage protection | |
| CN105024367B (en) | A kind of DC traction substation protective relaying device and its method | |
| CN203434595U (en) | Dual power supply manual switch protection circuit | |
| CN104092281B (en) | A kind of exchange dual power supply switching method | |
| CN203911453U (en) | An inlet wire cabinet control system | |
| CN203434735U (en) | Dual power supply delay automatic switch starting circuit | |
| CN102707206A (en) | Reclosure device for insulation detection | |
| CN208078643U (en) | A kind of device with master-slave back-up lightning protection device | |
| CN202405853U (en) | 110-KV double-circuit parallel running line reclosing input line | |
| CN206023235U (en) | A kind of AC three-phase load automatic-balancing system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |