CN208548713U - A kind of low appearance/low anti-flexible fling-cut system - Google Patents
A kind of low appearance/low anti-flexible fling-cut system Download PDFInfo
- Publication number
- CN208548713U CN208548713U CN201821017730.2U CN201821017730U CN208548713U CN 208548713 U CN208548713 U CN 208548713U CN 201821017730 U CN201821017730 U CN 201821017730U CN 208548713 U CN208548713 U CN 208548713U
- Authority
- CN
- China
- Prior art keywords
- low
- voltage
- fling
- terminal
- branch
- 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.)
- Expired - Fee Related
Links
- 238000005259 measurement Methods 0.000 claims abstract description 19
- 229910044991 metal oxide Inorganic materials 0.000 claims abstract description 12
- 150000004706 metal oxides Chemical class 0.000 claims abstract description 12
- 239000003990 capacitor Substances 0.000 claims description 3
- 230000001681 protective effect Effects 0.000 claims description 2
- 230000008901 benefit Effects 0.000 abstract description 4
- 230000004044 response Effects 0.000 abstract description 3
- 230000015556 catabolic process Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 230000001052 transient effect Effects 0.000 description 4
- 230000005611 electricity Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000009413 insulation Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 241000220317 Rosa Species 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/30—Reactive power compensation
Landscapes
- Emergency Protection Circuit Devices (AREA)
Abstract
The utility model provides a kind of low appearance/low anti-flexible fling-cut system, branch and flexible fling-cut switch branch are stabilized including voltage measurement branch, overvoltage, flexible fling-cut system structure is simple, effectively inhibit the voltage or rush of current caused in switching operation, it will not cause damages to the whole equipment where low appearance/low anti-or even fling-cut switch, more avoid the case where whole equipment is scrapped.Flexible fling-cut switch branch in the utility model is switched using controlled switching, Failsafe switching and disconnecting switch cascaded structure, controlled switching switch, Failsafe switching and disconnecting switch undertake equipment switching respectively, fault current is cut-off, grid switching operation function, take full advantage of the functional characteristic of different switchgears, improve the utilization efficiency of equipment, extend service life, and the utility model uses metal oxide pressure-limiting device to hold to be low/low anti-be configured with overvoltage and stabilize branch, fast response time, pressure limiting superior performance, reliable overvoltage back-up protection is provided for low appearance/low anti-and switchgear.
Description
Technical field
The utility model relates to high voltages and Insulation Coordination technical field, and in particular to a kind of low appearance/low anti-flexible switching
System.
Background technique
Low-pressure side shunt capacitor (hereinafter referred to as low appearance) and low-pressure side shunt reactor (hereinafter referred to as low anti-) are super
The important component of high voltage substation, the major function of the two are to control reactive power flow, stable power system by switching operation
The working voltage of system is of great significance to the safety of operation of power networks, stability and economy.Low appearance, low anti-switching behaviour
Make to realize by the breaking-closing operating of fling-cut switch connected in series.In engineering practice, when conventional fling-cut switch three-phase acts
Between there is dispersibility, the monophasic action time has randomness, often occurs during fling-cut switch separating brake shutting off existing with repeated breakdown
As, and lacking the overvoltage protection measure during low appearance/low anti-switching in the prior art, switching operation can cause voltage or electricity
Stream impact, to it is low hold/low anti-or even fling-cut switch where whole equipment cause damages and even result in whole equipment and scrap, mainly
Be embodied in the following aspects: the inrush phenomenon generated when 1) putting into low appearance can cause the rapid deterioration of contact of breaker, influence
Breaker service life；2) it cuts off low Rong Shiru fling-cut switch and multiple repeated breakdown occurs, it is possible to create the grade of amplitude rose electricity
Pressure causes the adverse consequences such as the increase of arrester energy consumption, apparatus insulated damage；3) multiple repeated breakdown such as occurs when cutting off low anti-, it can
Amplitude can be formed, the grade of high steepness rises overvoltage, since substation generally only installs arrester, and reactor side in bus bar side
Lack safeguard measure, reactor turn-to-turn insulation may be destroyed.
Utility model content
In order to overcome the shortcomings of it is above-mentioned cause damages in the prior art due to a lack of overvoltage protection measure to equipment, this is practical
It is novel provide it is a kind of it is low hold/low anti-flexible fling-cut system, including voltage measurement branch, overvoltage stabilize branch and flexible switching
Switching branches, flexible fling-cut system structure is simple, effectively inhibits the voltage or rush of current caused in switching operation, will not be to low
Whole equipment where appearance/low anti-or even fling-cut switch causes damages, and more avoids the case where whole equipment is scrapped.
To achieve the goals above, the utility model takes following scheme:
On the one hand, the present invention provides a kind of low appearance/low anti-flexible fling-cut system, and the low appearance is low-pressure side shunt capacitance
Device, it is described it is low resist for low-pressure side shunt reactor, the system comprises flexible fling-cut switch branches, voltage measurement branch and excessively electric
Flatten suppression branch；
Described flexibility fling-cut switch branch one end connects input terminal A, and the other end connects common point D；
Voltage measurement branch one end connects common point D, other end ground connection；
The overvoltage stabilizes branch one end connection its other end of common point D ground connection；
The low-pressure side bus of the input terminal A connection transformer, the common point D connection outlet terminal B, the outlet
Terminal B connects low appearance/low anti-high-voltage connection terminal；
The voltage measurement branch includes concatenated high-voltage arm divider resistance R1 and low-voltage arm divider resistance R2；
One end of the high-voltage arm divider resistance R1 connects common point D, and other end low-voltage wiring terminal connects voltage and surveys
Measure terminal C；Described one end low-voltage arm divider resistance R2 connects voltage measurement terminal C, other end ground connection.
It includes the first current transformer TA1 and metal oxide pressure-limiting device that the overvoltage, which stabilizes branch,；
The high-voltage connection terminal of the first current transformer TA1 meets common point D, and low-voltage wiring terminal and metal aoxidize
The high-voltage connection terminal of object voltage limiter connects, the low-voltage wiring terminal ground connection of the metal oxide pressure-limiting device.
The flexibility fling-cut switch branch includes disconnecting switch S, Failsafe switching K2, controlled switching switch K1 and second
Current transformer TA2；
The high-voltage connection terminal of the disconnecting switch S connects input terminal A, and the protection of low-voltage wiring terminal connecting fault is opened
Close the high-voltage connection terminal of K2, the high-voltage connection of the low-voltage wiring terminal and controlled switching switch K1 of the Failsafe switching K2
Terminal connection, the low-voltage wiring terminal of the controlled switching switch K1 and the high voltage nodes terminal of the second current transformer TA2 connect
It connects, the low-voltage wiring terminal of the second current transformer TA2 is connect with common point D.
Compared with the immediate prior art, technical solution provided by the utility model is had the advantages that
It is provided by the utility model it is low hold/low anti-flexible fling-cut system includes that voltage measurement branch, overvoltage stabilize branch
With flexible fling-cut switch branch, flexible fling-cut system structure is simple, effectively inhibits the voltage or rush of current caused in switching operation,
It will not cause damages to the whole equipment where low appearance/low anti-or even fling-cut switch, more avoid the case where whole equipment is scrapped；
Flexible fling-cut switch branch in the utility model includes controlled switching switch, and controlled switching switch can be completed
Low appearance/low anti-switching operation can accurately control branch wire time, and the dispersibility of reduction movement supports split-phase operation,
The impact of overcurrent and overvoltage is significantly reduced, the probability that repeated breakdown occurs for switchgear is reduced, holds/low anti-and switch to low
Equipment plays the role of being effectively protected；
Flexible fling-cut switch branch in the utility model is using controlled switching switch, Failsafe switching and disconnecting switch
Cascaded structure, controlled switching switch, Failsafe switching and disconnecting switch undertakes equipment switching respectively, fault current is cut-off, fall
Lock operating function takes full advantage of the functional characteristic of different switchgears, improves the utilization efficiency of equipment, extends using the longevity
Life；
The utility model uses metal oxide pressure-limiting device to stabilize branch, response speed for low appearance/low anti-overvoltage that is configured with
Degree is fast, pressure limiting superior performance, provides reliable overvoltage back-up protection for low appearance/low anti-and switchgear；
The utility model controlled switching is switched using metal oxide pressure-limiting device restore voltage maintain reduced levels and
It will not increase step by step, not only directly protect relevant device, but also reduce the probability of controlled switching switch repeated breakdown；
Technical solution provided by the utility model realizes low appearance/low anti-flexible switching, guarantees the flexible of equipment operation
Property and safety, and improve equipment operation safety and flexibility.
Detailed description of the invention
Fig. 1 is low appearance in the utility model embodiment/low anti-flexible fling-cut system structure chart.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawing.
The utility model embodiment provide it is a kind of it is low hold/low anti-flexible fling-cut system, it is therein it is low hold be low-pressure side simultaneously
Join capacitor, it is low to resist for low-pressure side shunt reactor, low appearance provided in an embodiment of the present invention/low anti-flexible fling-cut system structure chart
As shown in Figure 1, in Fig. 1, K1 indicates controlled switching switch, and K2 indicates Failsafe switching, and S indicates disconnecting switch, and TA2 indicates the
Two current transformers, TA1 indicate that the first current transformer, MOV indicate that metal oxide pressure-limiting device, A indicate input terminal, connection
On substation's 35kV low-pressure side bus；B indicates outlet terminal, is connected with low appearance/low anti-high-voltage connection terminal.C indicates electricity
Measurement terminal is pressed, R1, R2 respectively indicate high-voltage arm divider resistance and low-voltage arm divider resistance, and TV indicates that substation bus bar voltage is mutual
Sensor.
Low appearance provided by the embodiment of the utility model/low anti-flexible fling-cut system includes flexible fling-cut switch branch, voltage
Measurement branch and overvoltage stabilize branch；Specific connection relationship is as follows:
Flexible fling-cut switch branch one end connects input terminal A, and the other end connects common point D；
Voltage measurement branch one end connects common point D, other end ground connection；
Overvoltage stabilizes branch one end connection its other end of common point D ground connection；
The low-pressure side bus of input terminal A connection transformer, common point D connection outlet terminal B, outlet terminal B connection are low
Appearance/low anti-high-voltage connection terminal.
Above-mentioned voltage measurement branch, for measuring steady state voltage and transient voltage in low appearance/low anti-operational process, i.e.,
Voltage measurement branch is used to measure the steady state voltage and transient voltage in low appearance operational process, or for measuring low anti-ran
Steady state voltage and transient voltage in journey, to reduce the impact of the voltage and current in operating process；
Above-mentioned overvoltage stabilizes branch, for inhibit it is low hold/low anti-switching during steady-state overvoltage and transient state mistake
Voltage, and under the extreme cases such as equipment fault, tripping, malfunction, back-up protection is provided for equipment；
Above-mentioned flexible fling-cut switch branch is low perhaps low anti-for switching.
Above-mentioned voltage measurement branch includes concatenated high-voltage arm divider resistance R1 and low-voltage arm divider resistance R2；
Specifically, one end of high-voltage arm divider resistance R1 connects common point D, and other end low-voltage wiring terminal connects voltage
Measurement terminal C；Low-voltage arm one end divider resistance R2 connects voltage measurement terminal C, other end ground connection.
It includes the first current transformer TA1 and metal oxide pressure-limiting device that above-mentioned overvoltage, which stabilizes branch,；
The high-voltage connection terminal of the first above-mentioned current transformer TA1 connects common point D, low-voltage wiring terminal and metal oxygen
The high-voltage connection terminal of compound voltage limiter connects, the low-voltage wiring terminal ground connection of metal oxide pressure-limiting device.
Above-mentioned flexible fling-cut switch branch includes disconnecting switch S, Failsafe switching K2, controlled switching switch K1 and
Two current transformer TA2；
The high-voltage connection terminal of disconnecting switch S connects input terminal A, low-voltage wiring terminal connecting fault protective switch K2
High-voltage connection terminal, the high-voltage connection terminal company of the low-voltage wiring terminal of Failsafe switching K2 and controlled switching switch K1
It connects, the low-voltage wiring terminal of controlled switching switch K1 is connect with the high voltage nodes terminal of the second current transformer TA2, the second electric current
The low-voltage wiring terminal of mutual inductor TA2 is connect with common point D.
Above-mentioned flexibility fling-cut switch branch uses controlled switching switch, Failsafe switching and disconnecting switch cascaded structure,
Controlled switching switch, Failsafe switching and disconnecting switch undertakes equipment switching respectively, fault current is cut-off, grid switching operation function
Can, the functional characteristic of different switchgears is taken full advantage of, the utilization efficiency of equipment is improved, extends service life, and this
Utility model uses metal oxide pressure-limiting device to hold to be low/low anti-be configured with overvoltage and stabilize branch, fast response time, pressure limiting
Can be superior, reliable overvoltage back-up protection is provided for low appearance/low anti-and switchgear.
Finally it should be noted that: above embodiments are only to illustrate the technical solution of the utility model rather than limit it
System, those of ordinary skill in the art can still carry out specific embodiment of the present utility model referring to above-described embodiment
Modification perhaps equivalent replacement these without departing from any modification of the spirit and scope of the utility model or equivalent replacement, in Shen
Within the claims of the utility model that please be pending.
Claims (4)
1. it is a kind of it is low hold/low anti-flexible fling-cut system, it is described it is low to hold be low-pressure side shunt capacitor, it is described low to resist for low-pressure side simultaneously
Join reactor, which is characterized in that the system comprises flexible fling-cut switch branch, voltage measurement branch and overvoltage to stabilize branch
Road；
Described flexibility fling-cut switch branch one end connects input terminal A, and the other end connects common point D；
Voltage measurement branch one end connects common point D, other end ground connection；
The overvoltage stabilizes branch one end connection its other end of common point D ground connection；
The low-pressure side bus of the input terminal A connection transformer, the common point D connection outlet terminal B, the outlet terminal
B connects low appearance/low anti-high-voltage connection terminal.
2. low appearance according to claim 1/low anti-flexible fling-cut system, which is characterized in that the voltage measurement branch packet
Include concatenated high-voltage arm divider resistance R1 and low-voltage arm divider resistance R2；
One end of the high-voltage arm divider resistance R1 connects common point D, and other end low-voltage wiring terminal connects voltage measuring terminal
Sub- C；Described one end low-voltage arm divider resistance R2 connects voltage measurement terminal C, other end ground connection.
3. low appearance according to claim 1/low anti-flexible fling-cut system, which is characterized in that the overvoltage stabilizes branch
Including the first current transformer TA1 and metal oxide pressure-limiting device；
The high-voltage connection terminal of the first current transformer TA1 meets common point D, and low-voltage wiring terminal and metal oxide limit
The high-voltage connection terminal of depressor connects, the low-voltage wiring terminal ground connection of the metal oxide pressure-limiting device.
4. low appearance according to claim 1/low anti-flexible fling-cut system, which is characterized in that the flexibility fling-cut switch branch
Road includes disconnecting switch S, Failsafe switching K2, controlled switching switch K1 and the second current transformer TA2；
The high-voltage connection terminal of the disconnecting switch S connects input terminal A, low-voltage wiring terminal connecting fault protective switch K2
High-voltage connection terminal, the high-voltage connection terminal of the low-voltage wiring terminal of the Failsafe switching K2 and controlled switching switch K1
Connection, the low-voltage wiring terminal of the controlled switching switch K1 are connect with the high voltage nodes terminal of the second current transformer TA2, institute
The low-voltage wiring terminal for stating the second current transformer TA2 is connect with common point D.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821017730.2U CN208548713U (en) | 2018-06-29 | 2018-06-29 | A kind of low appearance/low anti-flexible fling-cut system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821017730.2U CN208548713U (en) | 2018-06-29 | 2018-06-29 | A kind of low appearance/low anti-flexible fling-cut system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208548713U true CN208548713U (en) | 2019-02-26 |
Family
ID=65422166
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821017730.2U Expired - Fee Related CN208548713U (en) | 2018-06-29 | 2018-06-29 | A kind of low appearance/low anti-flexible fling-cut system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208548713U (en) |
-
2018
- 2018-06-29 CN CN201821017730.2U patent/CN208548713U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11264794B2 (en) | Series compensator and control method | |
| CN104767194B (en) | A kind of high voltage power transmission current conversion station over-pressure safety device | |
| CN201199632Y (en) | Parallel capacitor apparatus with dual over-voltage protection | |
| Negari et al. | A new solid-state HVDC circuit breaker topology for offshore wind farms | |
| CN109066600B (en) | A kind of current limliting capacitance-resistance branch, resistance-capacitance type dc circuit breaker and parameter selection method | |
| US10218170B2 (en) | Current-limiting device utilizing a superconductor for a current-limiting operation | |
| CN102290805A (en) | Electric arc grounding overvoltage limiting device applied to medium-voltage distribution system | |
| CN209184242U (en) | It is a kind of to dispatch controllable power network neutral point earthing or grounding means | |
| CN201018279Y (en) | Arc extinguishing and over-voltage protection device | |
| CN208548713U (en) | A kind of low appearance/low anti-flexible fling-cut system | |
| CN2722487Y (en) | Arc and resonance extinction and overvoltage protector | |
| CN103269058A (en) | Controllable gap, and device and method for protecting neutral point of 110KV transformer based on controllable gap | |
| CN203135401U (en) | AC invasion protection device for DC system of transformer substation | |
| CN113176470B (en) | Fast switching device for limiting short-circuit current direct-current component of power system and current limiting method | |
| CN201887444U (en) | Electric grounding comprehensive protector for TXHPT | |
| CN107611930A (en) | A kind of high voltage protective system | |
| CN204131115U (en) | Multifunctional comprehensive circuit protection device | |
| CN109038595B (en) | Low-capacity/low-impedance flexible switching system and control method thereof | |
| CN208433749U (en) | A kind of transformer neutral point direct current decoupling device | |
| CN207691414U (en) | A kind of high pressure protector | |
| CN207282396U (en) | A kind of breaker of high-tension switch gear | |
| CN103368165A (en) | Arc elimination and harmonic elimination and overvoltage protector | |
| CN204835230U (en) | Box transformer circuit of once working a telephone switchboard | |
| CN201733088U (en) | Neutral point resistor cabinet of power transformer | |
| CN218733235U (en) | Switching-on inrush current suppression device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190226 Termination date: 20200629 |