CN106208011B - A kind of capacitor series compensation device and its protection equipment - Google Patents
A kind of capacitor series compensation device and its protection equipment Download PDFInfo
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- CN106208011B CN106208011B CN201610857598.5A CN201610857598A CN106208011B CN 106208011 B CN106208011 B CN 106208011B CN 201610857598 A CN201610857598 A CN 201610857598A CN 106208011 B CN106208011 B CN 106208011B
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- 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
- H02H9/02—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess current
- H02H9/021—Current limitation using saturable reactors
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/16—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for capacitors
-
- 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
- H02H9/02—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess current
- H02H9/025—Current limitation using field effect transistors
-
- 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
- H02H9/04—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage
- H02H9/06—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage using spark-gap arresters
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/18—Arrangements for adjusting, eliminating or compensating reactive power in networks
- H02J3/1807—Arrangements for adjusting, eliminating or compensating reactive power in networks using series compensators
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- 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
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Electrical Variables (AREA)
- Emergency Protection Circuit Devices (AREA)
Abstract
The present invention provides a kind of capacitor series compensation device and its protection equipment, belong to capacitor compensation technical field, solve that cost of equipment maintenance of the existing technology is high, the electric energy loss of route operation is big, stabilization of equipment performance and the technical issues of poor reliability.Capacitor series compensation device provided in an embodiment of the present invention and its protection equipment, capacitor series compensation device include：Vertical capacitor, switching operation mechanism and protection equipment, vertical capacitor connect transmission line of electricity by switching operation mechanism.Wherein, the protection equipment of capacitor series compensation device is used for the vertical capacitor in protective condenser series compensation device, including：MOV, damping reactor, vacuum and permanent magnet switch and by-pass switch, MOV are parallel to the both ends of vertical capacitor, and damping reactor is parallel to the both ends of vertical capacitor after connecting with vacuum and permanent magnet switch, by-pass switch is parallel to the both ends of vacuum and permanent magnet switch.The present invention is applied to improve transmission line of electricity voltage and power factor.
Description
Technical field
The present invention relates to capacitor compensation technical field, in particular to a kind of capacitor series compensation device and its
Protect equipment.
Background technique
Currently, 10kV the and 6kV distribution network in China is huge, load condition is complicated, operating condition and electric energy matter
Amount seems even more important.Quality of voltage is an important indicator of power quality.From the point of view of Practical, quality of voltage
Refer to the deviation between virtual voltage and desired voltage, whether the electric energy that reflection power supply department provides a user is qualified.Moreover, with
The sharp increase of electricity consumption, power quality especially quality of voltage problem increasingly sharpen, seriously limit the development of industrial or agricultural.
Impedance, voltage, phase, the power etc. that AC transmission system is adjusted frequently with Electric capacity compensation device, work as capacitor
When investment, biggish shove can be generated；When capacitor excision, higher overvoltage can be generated；Capacitor needs before putting into again
It fully to discharge it.Therefore, existing Electric capacity compensation device is applied very fast or have impact in the idle variation of electrical equipment
When in the system of load, it will usually equipped with protection equipment, the active and reactive power flow of system is flexibly controlled with realizing, from
And reaches and improve route conveying capacity, improve power quality, improve the purpose of reliability.
In realizing process of the present invention, at least there are the following problems in the prior art for inventor's discovery：The electricity of the prior art
The performance for holding compensation device protection equipment is lower, when transmission line of electricity breaks down cannot protective condenser well, Er Qiebao
The service life for protecting equipment is lower, and then improves the amount of depreciation and maintenance cost of protection equipment, is easily reduced making for capacitor
With performance, and then potentially affect the stability of transmission line of electricity.Therefore, there are cost of equipment maintenance height, route for the prior art
The electric energy loss of operation is big, stabilization of equipment performance and the technical issues of poor reliability.
Summary of the invention
In view of this, the embodiment of the present invention be designed to provide a kind of capacitor series compensation device and its protection is set
It is standby, to reduce the maintenance cost of equipment, the electric energy loss for reducing route operation, improve stabilization of equipment performance and reliability.
In a first aspect, being used for protective condenser series compensation the embodiment of the invention provides a kind of capacitor protection equipment
Vertical capacitor vertical capacitor in device, including：MOV, damping reactor, vacuum and permanent magnet switch and by-pass switch；
The MOV is parallel to the both ends of the vertical capacitor；
The damping reactor is parallel to the both ends of the vertical capacitor after connecting with vacuum and permanent magnet switch；
The by-pass switch is parallel to the both ends of the vacuum and permanent magnet switch.
With reference to first aspect, the embodiment of the invention provides the first possible embodiments of first aspect, wherein also
Including inductance, the inductance both ends are separately connected the damping reactor and the vacuum and permanent magnet switchs.
The possible embodiment of with reference to first aspect the first, the embodiment of the invention provides second of first aspect
Possible embodiment, wherein the by-pass switch is parallel to the vacuum and permanent magnet switch and the inductance both ends.
The possible embodiment of second with reference to first aspect, the embodiment of the invention provides the third of first aspect
Possible embodiment, wherein the by-pass switch is breaker, and the vacuum and permanent magnet switch is vacuum and permanent magnet contactor.
With reference to first aspect, the embodiment of the invention provides the 4th kind of possible embodiments of first aspect, wherein institute
Stating damping reactor is series varactor device.
Second aspect, the embodiment of the present invention also provide a kind of capacitor series compensation device, including：Vertical capacitor, throwing
Operating mechanism and the protection equipment are cut, the vertical capacitor connects transmission line of electricity by the switching operation mechanism.
In conjunction with second aspect, the embodiment of the invention provides the first possible embodiments of second aspect, wherein institute
Stating vertical capacitor is vertical capacitor group, is formed by connecting by several vertical capacitors.
In conjunction with the first possible embodiment of second aspect, the embodiment of the invention provides second of second aspect
Possible embodiment, wherein the vertical capacitor is connected by inlet wire with outlet, and the inlet wire and outlet are tin plating soft
Copper stranded conductor, the tin plating annealed copper strand wire are fixed on one end of aluminium row by wire clamp, and the other end connection of the aluminium row is described vertical
The connecting terminal of capacitor.
In conjunction with second of possible embodiment of second aspect, the embodiment of the invention provides the third of second aspect
Possible embodiment, wherein the switching operation mechanism connects outlet or the inlet wire of the vertical capacitor by connecting line.
In conjunction with second of possible embodiment of second aspect, the embodiment of the invention provides the 4th kind of second aspect
Possible embodiment, wherein further include waterproof cabinet body, the waterproof cabinet body is three open-door, and is set inside the waterproof cabinet body
There are lateral partitions, vertical capacitor described in three groups is mounted on the partition, the MOV, the contactor and the breaker
On the waterproof cabinet body bottom plate.
A kind of capacitor series compensation device provided by the present invention and its protection equipment can generate following beneficial effect：
Capacitor series compensation device provided in an embodiment of the present invention and its protection equipment, capacitor series compensation device packet
It includes：Vertical capacitor, switching operation mechanism and protection equipment, vertical capacitor connect power transmission line by switching operation mechanism
Road.Wherein, the protection equipment of capacitor series compensation device is used for the vertical capacitor in protective condenser series compensation device,
Including：MOV, damping reactor, vacuum and permanent magnet switch and by-pass switch, MOV are parallel to the both ends of vertical capacitor, damp reactance
Device is parallel to the both ends of vertical capacitor after connecting with vacuum and permanent magnet switch, by-pass switch is parallel to the two of vacuum and permanent magnet switch
End.When occurring shoving greatly in circuit or when high overvoltage, need to connect protection circuit for vertical capacitor short circuit, it is vertical to protect
Capacitor is not breakdown, and first class of protection circuit is MOV, and safe secondary protection circuit is that inductance and vacuum and permanent magnet switch, three-level protective electricity
Road is by-pass switch.By using above-mentioned technical proposal, alleviate that cost of equipment maintenance of the existing technology is high, route operation
Electric energy loss is big, stabilization of equipment performance and the technical issues of poor reliability.And then it reduces the maintenance cost of equipment, reduce route fortune
Capable electric energy loss, raising stabilization of equipment performance and reliability.
Other features and advantages of the present invention will illustrate in the following description, also, partly become from specification
It obtains it is clear that understand through the implementation of the invention.The objectives and other advantages of the invention are in specification, claims
And specifically noted structure is achieved and obtained in attached drawing.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in the embodiment attached
Figure is briefly described, it should be understood that the following drawings illustrates only certain embodiments of the present invention, therefore is not construed as pair
The restriction of range for those of ordinary skill in the art without creative efforts, can also be according to this
A little attached drawings obtain other relevant attached drawings.
Fig. 1 shows a kind of capacitor series compensation device provided by the embodiment of the present invention and its protects the structure of equipment
Schematic diagram；
Fig. 2 shows in capacitor series compensation device provided by the embodiment of the present invention, before series compensation device application
Circuit and vectogram afterwards.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
Middle attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is only
It is a part of the embodiment of the present invention, instead of all the embodiments.The present invention being usually described and illustrated herein in the accompanying drawings is real
The component for applying example can be arranged and be designed with a variety of different configurations.Therefore, of the invention to what is provided in the accompanying drawings below
The detailed description of embodiment is not intended to limit the range of claimed invention, but is merely representative of selected reality of the invention
Apply example.Based on the embodiment of the present invention, those skilled in the art institute obtained without making creative work
There are other embodiments, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that term " center ", "upper", "lower", "left", "right", "vertical",
The orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" be based on the orientation or positional relationship shown in the drawings, merely to
Convenient for description the present invention and simplify description, rather than the device or element of indication or suggestion meaning must have a particular orientation,
It is constructed and operated in a specific orientation, therefore is not considered as limiting the invention.In addition, term " first ", " second ",
" third " is used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance.
In addition, in the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " peace
Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally
Connection；It can be mechanical connection, be also possible to be electrically connected；Can be directly connected, can also indirectly connected through an intermediary,
It can be the connection inside two elements.For the ordinary skill in the art, above-mentioned art can be understood with concrete condition
The concrete meaning of language in the present invention.
Currently, power quality especially quality of voltage problem is increasingly sharpened with the sharp increase of electricity consumption, work is seriously limited
The development of agricultural.Existing Electric capacity compensation device is applied in the system that the idle variation of electrical equipment is very fast or has impact to load
When, it will usually equipped with protection equipment, the active and reactive power flow of system is flexibly controlled with realizing, to reach raising line
Road conveying capacity improves power quality, improves the purpose of reliability.The performance of the Electric capacity compensation device protection equipment of the prior art
It is lower, when transmission line of electricity breaks down cannot protective condenser well, and protect the service life of equipment lower, in turn
The amount of depreciation and maintenance cost for improving protection equipment, are easily reduced the service performance of capacitor, and then potentially affect defeated
The stability of electric line.
Based on this, a kind of capacitor series compensation device provided in an embodiment of the present invention and its protection equipment are set with reducing
The electric energy loss of standby maintenance cost, reduction route operation improves stabilization of equipment performance and reliability.
Referring to Fig. 1, a kind of capacitor series compensation device and its protection equipment provided by the embodiment of the present invention that shows
Structural schematic diagram.
A kind of protection equipment of capacitor series compensation device provided by the embodiment of the present invention is used for protective condenser string
Join the vertical capacitor in compensation device, including：Metal oxide varistor (Metal Oxide Varistors, referred to as
MOV), abbreviation varistor is using zinc oxide as semiconductor votage limit type antisurge device made of material sintering.When capacitor is thrown
It is fashionable, biggish shove can be generated；When capacitor excision, higher overvoltage can be generated；Capacitor needs before putting into again
It fully discharges it.When such case causes failure, need quickly to be shorted vertical capacitor, MOV is parallel to vertical electricity
The both ends of container can be more than snap action when regulation limits in vertical capacitor voltage, and therefore, MOV becomes capacitor
First order protection.
When line fault, fault current is larger, when trouble duration increases, if absorbed only with MOV protection
Prolonged short circuit current directly results in the increased costs of MOV then the rated capacity of required MOV can be excessive, old
Change also can be very fast.To avoid MOV overload from causing to damage, also damping reactor and vacuum and permanent magnet need to be increased at the both ends MOV
Switch, damping reactor are parallel to the both ends of vertical capacitor after connecting with vacuum and permanent magnet switch.Vacuum and permanent magnet switch utilizes magnetic
The principle that identical charges repel each other for pole, there is a natural attraction between the sexes replaces traditional electromagnet drive mechanism, one kind of formation with permanent mechanism driving mechanism
Micro energy lose switching device.It is mounted on the changeless permanent magnet of polarity on switch linkage mechanism, it is variable on switch with being solidificated in
Polarity soft magnet interaction, to achieve the purpose that actuation, holding and release.Above structure constitutes the second level of capacitor
Protection.
Further, when electric current persistently continues growing when failure, for protection vacuum and permanent magnet switch, vacuum and permanent magnet is avoided to open
Pass is damaged because of overload, need to increase by-pass switch in vacuum and permanent magnet switch ends, by-pass switch is parallel to vacuum and permanent magnet switch
Both ends.Above structure constitutes the third level protection of capacitor.
The protection equipment of capacitor series compensation device provided in an embodiment of the present invention further includes inductance, inductance both ends difference
It connects damping reactor and vacuum and permanent magnet switchs, and by-pass switch is parallel to vacuum and permanent magnet switch and inductance both ends.
In protection equipment provided in an embodiment of the present invention, by-pass switch is breaker, and vacuum and permanent magnet switch is vacuum and permanent magnet
Contactor.Breaker is to refer to close, carry and cut-off the electric current under normal loop condition, and can close before the deadline
Close, carry and cut-off the switching device of the electric current under abnormal loop condition.The actuation time of bypass breaker is 30-100ms,
It is then protected by MOV before being closed completely.Vacuum and permanent magnet contactor flows through electric current using coil in industrial electro and generates magnetic
, make contact closure, to achieve the purpose that control load appliance.After contactor coil is powered, coil current generates magnetic field, makes
Fixed core generates electromagnetic attraction and attracts dynamic iron core, and acts with movable contact：Normally-closed contact disconnects, normally opened contact closure, and the two is
Linkage.When the coil is de-energized, electromagnetic attraction disappears, and armature discharges under the action of release spring, restores contact：Normally opened touching
Point disconnects, normally-closed contact closure.Vacuum and permanent magnet contactor overcomes traditional electromagnetic contactor, and energy consumption is high, work noise is big,
The disadvantages of being influenced by network voltage, has good energy-saving effect.
In protection equipment provided in an embodiment of the present invention, damping reactor is series varactor device.Capacitor and inductance string
The combination of connection constitutes series resonant tank, and often there are the induction equipments such as a large amount of transformers and motor in power distribution network, because
This, series compensation device has probability that resonance and induction conductivity self-excitation occurs when running.Access damping reactor can prevent humorous
When starting self-excitation occurs for the over-voltage breakdown vertical capacitor and induction conductivity that vibration overcurrent generates, and improve equipment can
By property.
Capacitor series compensation device provided in an embodiment of the present invention, including vertical capacitor, switching operation mechanism and
Above-mentioned protection equipment, vertical capacitor connect transmission line of electricity by switching operation mechanism.Protection equipment is connected in parallel on vertical capacitor
Both ends, to capacitor carry out three-level protective, wherein meet the rapid overpressure of vertical capacitor using MOV as first class of protection
Protection further decreases the rated capacity of MOV as second class protection using vacuum and permanent magnet switch and inductance, using by-pass switch as
Three-level protective substantially increases the reliability of equipment.
Fig. 2 shows in capacitor series compensation device provided by the embodiment of the present invention, before series compensation device application
Circuit and vectogram afterwards.
According to the radial distribution line of distribution, the circuit and vectogram of series compensation device application front and back.Route first and last end
The difference Δ V (only general consider vertical component) of line voltage is：
Wherein, ILFor line current, RLFor line resistance, XLFor route induction reactance, PLFor active power, QLFor reactive power.
In inductive load, PLAnd QLIt is positive, terminal voltage is lower than head end voltage.It (joined after series compensation device is added
Capacitive reactance XC), it can generate a voltage opposite with line reactance voltage, reduce the pressure drop of line reactance, and value is：
It is equivalent to the electrical distance for shortening route, improves the load-bearing capacity of route.To which first and last end voltage difference becomes：
Series compensation provide reactive compensation capacity be：
The voltage of compensation is directly proportional to line current, capacity and electric current it is square directly proportional, therefore, series capacitor has
The advantage of " adaptive " adjusting, frequent switching not needing as and mending device, while reducing the electric energy loss of route operation.
In capacitor series compensation device provided in an embodiment of the present invention, vertical capacitor is vertical capacitor group, if by
Dry vertical capacitor is formed by connecting.Under normal conditions, the service life of capacitor and it overvoltage effect under be bypassed suddenly
Number, bypass when overvoltage multiple, discharge current and the number of the continuous charge and discharge in the unit time have it is close
Relationship.The steady state stability limit that route can be improved using the structure of vertical capacitor increases the service life of capacitor, improves
Route conveying capacity reduces the electric energy loss in route transportational process.
In capacitor series compensation device provided in an embodiment of the present invention, vertical capacitor is connected by inlet wire with outlet,
Inlet wire and outlet are tin plating annealed copper strand wire, and tin plating annealed copper strand wire is fixed on one end of aluminium row, the other end of aluminium row by wire clamp
Connect the connecting terminal of vertical capacitor.
In capacitor series compensation device provided in an embodiment of the present invention, switching operation mechanism be disconnecting switch and throw move back it is disconnected
Road device, switching operation mechanism connect outlet or the inlet wire of vertical capacitor by connecting line.When route breaks down, auto by pass
Vertical capacitor group and its protection equipment, automatically engage after delay.Using with the feelings such as reclosing, underloading, resonance, overcurrent-overvoltage
Condition improves automation degree of equipment and system stability.The shell of switching operation mechanism has enough mechanical strengths, to bear
Using or handling process in the mechanical force that is likely encountered.Non-metal shell uses fire proofing.The gold that switching operation mechanism uses
Belonging to fastener and metallic supports has coating appropriate, and coating has firm adhesive force, no peeling and obscission, use
Fastener can guarantee that switching operation mechanism will not be loosened or be shifted because of vibration in normal conditions of use.
Capacitor series compensation device provided in an embodiment of the present invention further includes sensor, specially voltage transformer, electricity
Current transformer and voltage transformer and capacitor discharging circuit, sensor be connected to above-mentioned switching operation mechanism and vertical capacitor it
Between.In capacitor series compensation device provided in an embodiment of the present invention, vertical capacitor group is divided into the identical two parts of capacity, adopts
Forward and reverse method across same Current Mutual Inductance window is distinguished with side, is realized difference stream protection, is improved capacity cell protection
Sensitivity.
Capacitor series compensation device provided in an embodiment of the present invention further includes waterproof cabinet body, and waterproof cabinet body is three open-door,
And lateral partitions are equipped with inside waterproof cabinet body, three groups of vertical capacitors are mounted on partition, and MOV, contactor and breaker are set to
On waterproof cabinet body bottom plate.Waterproof cabinet body can provide the water proof and dust proof protection on basis for series compensation device and its equipment, into one
Step improves the safety of equipment operation.
Capacitor series compensation device provided in an embodiment of the present invention and its protection equipment, capacitor series compensation device packet
It includes：Vertical capacitor, switching operation mechanism and protection equipment, vertical capacitor connect power transmission line by switching operation mechanism
Road.Wherein, the protection equipment of capacitor series compensation device is used for the vertical capacitor in protective condenser series compensation device,
Including：MOV, damping reactor, vacuum and permanent magnet switch and by-pass switch, MOV are parallel to the both ends of vertical capacitor, damp reactance
Device is parallel to the both ends of vertical capacitor after connecting with vacuum and permanent magnet switch, by-pass switch is parallel to the two of vacuum and permanent magnet switch
End.When occurring shoving greatly in circuit or when high overvoltage, need to connect protection circuit by vertical capacitor short circuit, to protect capacitor
Device is not breakdown, and first class of protection circuit is MOV, and safe secondary protection circuit is that inductance and vacuum and permanent magnet switch, and three-level protective circuit is
By-pass switch.By using above-mentioned technical proposal, alleviate that cost of equipment maintenance of the existing technology is high, electricity of route operation
The technical issues of big, stabilization of equipment performance and poor reliability can be lost.And then it reduces the maintenance cost of equipment, reduce route operation
Electric energy loss improves stabilization of equipment performance and reliability.
In embodiment provided herein, it should be understood that disclosed system and method, it can be by others side
Formula is realized.System embodiment described above is only schematical, for example, the division of the unit, only one kind are patrolled
Function division is collected, there may be another division manner in actual implementation, in another example, multiple units or components can combine or can
To be integrated into another system, or some features can be ignored or not executed.Another point, shown or discussed is mutual
Coupling, direct-coupling or communication connection can be INDIRECT COUPLING or communication link by some communication interfaces, device or unit
It connects, can be electrical property, mechanical or other forms.
The unit as illustrated by the separation member may or may not be physically separated, aobvious as unit
The component shown may or may not be physical unit, it can and it is in one place, or may be distributed over multiple
In network unit.It can select some or all of unit therein according to the actual needs to realize the mesh of this embodiment scheme
's.
It, can also be in addition, the functional units in various embodiments of the present invention may be integrated into one processing unit
It is that each unit physically exists alone, can also be integrated in one unit with two or more units.
Finally it should be noted that：Embodiment described above, only a specific embodiment of the invention, to illustrate the present invention
Technical solution, rather than its limitations, scope of protection of the present invention is not limited thereto, although with reference to the foregoing embodiments to this hair
It is bright to be described in detail, those skilled in the art should understand that：Anyone skilled in the art
In the technical scope disclosed by the present invention, it can still modify to technical solution documented by previous embodiment or can be light
It is readily conceivable that variation or equivalent replacement of some of the technical features；And these modifications, variation or replacement, do not make
The essence of corresponding technical solution is detached from the spirit and scope of technical solution of the embodiment of the present invention, should all cover in protection of the invention
Within the scope of.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.
Claims (7)
1. a kind of protection equipment of capacitor series compensation device, which is characterized in that be used for protective condenser series compensation device
In vertical capacitor, including：MOV, damping reactor, vacuum and permanent magnet switch and by-pass switch；
The MOV is parallel to the both ends of the vertical capacitor；
The damping reactor is parallel to the both ends of the vertical capacitor after connecting with vacuum and permanent magnet switch；Damp reactance
Device is series varactor device；
The by-pass switch is parallel to the both ends of the vacuum and permanent magnet switch；
It further include inductance, the inductance both ends are separately connected the damping reactor and the vacuum and permanent magnet switchs.
2. the protection equipment of capacitor series compensation device according to claim 1, which is characterized in that the by-pass switch
It is parallel to the vacuum and permanent magnet switch and the inductance both ends.
3. the protection equipment of capacitor series compensation device according to claim 2, which is characterized in that the by-pass switch
For breaker, the vacuum and permanent magnet switch is vacuum and permanent magnet contactor.
4. a kind of capacitor series compensation device, which is characterized in that including：Vertical capacitor, switching operation mechanism and such as power
Benefit requires 1 to 3 described in any item protection equipment, and the vertical capacitor connects power transmission line by the switching operation mechanism
Road.
5. capacitor series compensation device according to claim 4, which is characterized in that the vertical capacitor is vertical electricity
Container group is formed by connecting by several vertical capacitors.
6. capacitor series compensation device according to claim 5, which is characterized in that the vertical capacitor passes through inlet wire
It is connected with outlet, the inlet wire and outlet are tin plating annealed copper strand wire, and the tin plating annealed copper strand wire, which is fixed on aluminium by wire clamp, to be arranged
One end, the other end of aluminium row connects the connecting terminal of the vertical capacitor.
7. capacitor series compensation device according to claim 6, which is characterized in that the switching operation mechanism passes through company
Wiring connects outlet or the inlet wire of the vertical capacitor.
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| CN110429918A (en) * | 2019-08-27 | 2019-11-08 | 深圳市双平电源技术有限公司 | A kind of transformer, capacitor and inductance engage the structure to form series resonance |
| CN111092431A (en) * | 2019-11-19 | 2020-05-01 | 国网浙江省电力有限公司杭州供电公司 | Intelligent variable capacitor with protection function for power grid |
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| EP1966867B1 (en) * | 2005-12-28 | 2014-03-05 | Abb Research Ltd. | Thyristor controlled series capacitor module |
| CN103050976A (en) * | 2013-01-11 | 2013-04-17 | 山西省电力公司大同供电分公司 | Subsynchronous resonance TCSC (Thyristor Controlled Series Compensation) device of transmission line inhibition system |
| CN103701135A (en) * | 2013-11-25 | 2014-04-02 | 国家电网公司 | Intelligent series compensation device for distribution network and use method of compensation device |
| CN105914748A (en) * | 2016-06-12 | 2016-08-31 | 国网安徽省电力公司宿州供电公司 | Dual-protection distributive serial-connection compensation system |
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