CN207947609U - Based on Advanced Static Var Compensator of the cascade without bridging current circuit - Google Patents
Based on Advanced Static Var Compensator of the cascade without bridging current circuit Download PDFInfo
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- CN207947609U CN207947609U CN201820124107.0U CN201820124107U CN207947609U CN 207947609 U CN207947609 U CN 207947609U CN 201820124107 U CN201820124107 U CN 201820124107U CN 207947609 U CN207947609 U CN 207947609U
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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
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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- Y02E40/30—Reactive power compensation
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Abstract
The utility model is based on Advanced Static Var Compensator of the cascade without bridging current circuit, include be made of the cascade of several modular units it is a variety of single-phase and three-phase star connects, corner connection or double star connect main power circuit and several branches in series by inductance and capacitance being in parallel with main power circuit.It the advantage is that：The Advanced Static Var Compensator that is itd is proposed while there is SVG rapid dynamic response speeds, harmonic content is few, and device power consumption is low, small, simple, the cheap advantage of light-weight and SVC controls.The Advanced Static Var Compensator circuit by energy one direction transmit without being constituted based on bridging current circuit, several without bridging current circuit parallel connection are connected in series to the capacitor the branch constituted by inductance with cascade, advanced First Harmonic Reactive Power can be both provided, low-order harmonic can be filtered out again, the input current without bridging current circuit is cascaded by control, it can be embodied as system and continuously adjustable reactive power is provided, and suppress or eliminate grid current harmonic.
Description
Technical field
The utility model is related to the novel structure methods of electric system Static Var Compensator, belong to utility power quality control skill
Dynamic passive compensation control technology field in art.
Background technology
As the application of power electronic equipment is increasingly extensive and a large amount of accesses of electric system nonlinear load, power supply
It shows power quality problem day and protrudes, therefore in recent years, cause by the power quality control technology of core of electronic power convertor
More and more concerns.Mesh is had become for the research of the harmonic suppression apparatus and reactive power compensator applied in electric system
One of most valued research field of preceding electrical engineering field, these utility power quality control devices generally acknowledge that effect is can to improve
The power factor of power supply system and load reduces place capacity, reduces power attenuation, stablizes the voltage of receiving end and power grid, carries
High power supply quality.
According to connection type difference, it is mixed that electric system compensation way can be divided into shunt compensation, series compensation and connection in series-parallel
Three kinds of compensation is closed, wherein shunt compensation obtains most commonly used application in the power system due to accessing and cutting off conveniently.Simultaneously
The exemplary device that continuous dynamic compensation can be carried out to the reactive power in electric system most common at present in connection compensation application
It is two kinds of devices of Static Var Compensator (SVC) and static reactive generator (SVG).Wherein Static Var Compensator (SVC) is logical
It is often to be fixed capacitor (FC) by thyristor-controlled reactor (TCR) to constitute that (capacitor is usually in series with inductance and does simultaneously
Low-frequency harmonics filter use), its advantage is that：Continuous Compensation can be achieved, can split-phase adjust, reliable for operation, control is simple, and price is just
Preferably；Its major defect is to will produce a large amount of harmonic waves in itself, and necessary additional filterings device in use, in addition reactor is bulky stupid
Weight.Compared with Static Var Compensator (SVC), static reactive generator (SVG) is by full-control type Modern Power Electronic Devices structure
At using modern power electronics technology, while realizing continuous dynamic passive compensation, can also having to the harmonic wave of power grid
Effect inhibits, and has dynamic responding speed faster, voltage flicker rejection ability is stronger, and harmonic content is few, and device power consumption is low, volume
Small, series of advantages, the major defect such as light-weight (not needing bulky and hulking reactor) are：Expensive, control is complicated.
From the foregoing, tradition can commonly carry out the reactive power in electric system two kinds of canonical parallels of continuous dynamic compensation
Compensation device respectively has its shortcoming.
The purpose of this utility model is to provide a kind of novel static reacance having above two paralleling compensating device advantage concurrently
Compensator circuit.The controlled rectifier circuit of Advanced Static Var Compensator electricity routing energy one direction transmission is constituted, for
Single-phase and three-phase shunt compensator circuit, may be used a kind of suitable control strategy, control controlled rectifier input current
To be ahead of or lag behind the phase operation of input supply voltage, by the cooperation with capacitor, provided for system continuously adjustable
Reactive power, while the harmonic wave of power grid is inhibited.In the Advanced Static Var Compensator circuit, energy one direction passes
Defeated controlled rectifier couples with several capacitances with the branch circuit parallel connection that inductance is in series, and the branch that capacitance is in series with inductance was both
Advanced First Harmonic Reactive Power can be provided, and low-order harmonic can be filtered out, by controlling the controllable whole of energy one direction transmission
Flow phase of the device input current relative to network voltage, so that it may to be reached for the mesh that system provides continuously adjustable reactive power
's.Polarity is opposite by the controlled rectifier generation of control energy one direction transmission is equal with grid current harmonic size of current
Harmonic current, so that it may to achieve the purpose that suppress or eliminate grid current harmonic.
For the controlled rectifier of energy one direction transmission, up to the present, in the industry primarily as unit power
Factory rectifier uses, when the utility model patent enables its input current to be ahead of or lag behind the phase of input supply voltage
When operation, input current necessarily will produce zero cross distortion, increases so as to cause electric current THD, is proposed in the utility model
It, can be with when controlling input current and being run with being ahead of or lagging behind the phase of input supply voltage in parallel single-phase compensator
By to the reasonable injection of input current reference value control and rational selecting switch pattern, keeping the zero crossing of input current abnormal
Change is effectively suppressed, and can also obtain the changing rule of THD by the analysis to input current parting expression, to
Go out that input current is advanced or the possibility variation range of the phase of lag input supply voltage, and finally obtains maximum reactive-load compensation
Range；And in the parallel three phase compensator that the utility model is proposed, by the three-phase for rationally controlling the transmission of energy one direction
Voltage between the input three phase mains midpoint and rectifier midpoint of controlled rectifier, or by the reasonable of input current given value
Injection control can make current zero-crossing point distortion be effectively suppressed or completely eliminate.The novel static that the utility model is proposed
Only reactive-load compensator both has SVG rapid dynamic response speeds, and harmonic content is few, and device power consumption is low, small, light-weight (to be not required to
Want bulky and hulking reactor) etc. series of advantages, it may have SVC controls are simple, cheap (because of a small amount of full-control type of only need
Electronic power switch device) the advantages of.
Invention content
In order to achieve the above objectives, provided by the utility model the based on novel static var compensation of the cascade without bridging current circuit
Device, including main power circuit are repaid, the main power circuit includes input inductance and N number of no bridge circuit, and wherein N is positive integer, nothing
Bridge circuit uses the first composite bridge, and first composite bridge includes the bridge being made of two general-purpose diodes and two switching devices
Road, output DC capacitor and load, two switching devices are in two upper arm of the bridge or two underarms of the bridge, and two common
The DC output end of the bridge of diode and two switching devices composition is connected with output DC capacitor parallel with one another and load；
The main power circuit includes N number of cascade first composite bridge, and wherein second of each first composite bridge is defeated
Enter end and first input terminal of next first composite bridge is sequentially connected, first composite bridge to cascade up is constituted
Third composite bridge, remaining two free ends of third composite bridge, i.e., first input terminal and n-th of first the first composite bridge
Second input terminal of the first composite bridge connects through the input inductance and accesses AC network；The main power circuit further includes
By inductance (Lfk) capacitance (Cfk) K filter branches in series, wherein K is positive integer, and K filter branches simultaneously couple
Enter AC network.
In order to achieve the above objectives, second provided by the utility model based on cascade the novel static nothing without bridging current circuit
Work(compensator, including main power circuit, the main power circuit include input inductance and N number of no bridge circuit, and wherein N is just whole
Number, no bridge circuit use the second composite bridge, and second composite bridge includes by two general-purpose diodes and two switching device groups
At bridge, output DC capacitor and load, two switching devices are in two left arms of the bridge or two right arms of the bridge, two
It the DC output end of the bridge of a general-purpose diode and two switching devices composition and output DC capacitor parallel with one another and bears
It carries and is connected；The main power circuit includes N number of cascade second composite bridge, wherein second of second composite bridge is defeated
Enter end and first input terminal of next second composite bridge is sequentially connected, second composite bridge to cascade up is constituted
4th composite bridge, remaining two free ends of the 4th composite bridge, i.e., first input terminal and n-th of first the second composite bridge
Second input terminal of the second composite bridge connects through the input inductance and accesses AC network；The main power circuit further includes
By inductance (Lfk) capacitance (Cfk) K filter branches in series, wherein K is positive integer, and K filter branches simultaneously couple
Enter AC network.
In order to achieve the above objectives, it is provided by the utility model the third based on cascade the novel static nothing without bridging current circuit
Work(compensator, including three-phase main power circuit, the three-phase main power circuit include 3 and input inductance and by several first group
Close 3 third composite bridges respectively constituting of bridge, 3 input inductance one end are connect with three phase network, the other end respectively with 3 thirds
Star-like connection is constituted after composite bridge series connection, wherein first composite bridge includes by two general-purpose diodes and two derailing switches
Bridge, output DC capacitor and load, two switching devices that part forms are under two upper arm of the bridge or two of the bridge
The DC output end and output DC capacitor parallel with one another of the bridge of arm, two general-purpose diodes and two switching devices composition
It is connected with load；First input terminal of second input terminal of each first composite bridge and next first composite bridge
It is sequentially connected, remaining two free ends of first composite bridge to cascade up, i.e., first of first the first composite bridge is defeated
Enter second input terminal at end and the first composite bridge of n-th, N number of first composite bridge to cascade up constitutes third combination
Bridge；The three-phase main power circuit further includes K three-phase LC filter, and wherein K is positive integer, each three-phase LC filters
By three inductance (Lfk) capacitance (Cfk) series arm composition, three inductance (L of each three-phase LC filtersfk) capacitance
(Cfk) series arm connect in such a way that star connects with three-phase AC grid.
The utility model the third based on cascade the Advanced Static Var Compensator without bridging current circuit, wherein described 3
Input one end inductance (L101-L103) is connect with three phase network, and the other end replaces structure after connecting respectively with 3 third composite bridges
At Angle connection.
The utility model the third based on cascade the Advanced Static Var Compensator without bridging current circuit, wherein the three-phase
Main power circuit replacement includes 3 input inductance, 6 bridge arm inductance, 6 third composite bridges and DC capacitor, 6 bridge arms
Inductance, 6 third composite bridges and DC capacitor constitute double star and connect, the common point of two bridge arm inductance of same phase totally three,
Three common points are connected with one end of 3 input inductance respectively, and the other end of 3 input inductance is connected to three phase network.
In order to achieve the above objectives, 4th kind provided by the utility model based on cascade the novel static nothing without bridging current circuit
Work(compensator, including three-phase main power circuit, the three-phase main power circuit include 3 and input inductance and by several second group
Close 3 the 4th composite bridges respectively constituting of bridge, 3 input inductance one end are connect with three phase network, the other end respectively with 3 the 4th
Star-like connection is constituted after composite bridge series connection, wherein second composite bridge includes by two general-purpose diodes and two derailing switches
Bridge, output DC capacitor and load, two switching devices that part forms are in two left arms of the bridge or two right sides of the bridge
The DC output end and output DC capacitor parallel with one another of the bridge of arm, two general-purpose diodes and two switching devices composition
It is connected with load；First input terminal of second input terminal of each second composite bridge and next second composite bridge
It is sequentially connected, remaining two free ends of second composite bridge to cascade up, i.e., first of first the second composite bridge is defeated
Enter second input terminal at end and the second composite bridge of n-th, N number of second composite bridge to cascade up constitutes the 4th combination
Bridge；The three-phase main power circuit further includes K three-phase LC filter, and wherein K is positive integer, each three-phase LC filters
By three inductance (Lfk) capacitance (Cfk) series arm composition, three inductance (L of each three-phase LC filtersfk) capacitance
(Cfk) series arm connect in such a way that star connects with three-phase AC grid.
The 4th kind of the utility model is based on Advanced Static Var Compensator of the cascade without bridging current circuit, wherein described 3
Input one end inductance (L101-L103) is connect with three phase network, and the other end replaces structure after connecting respectively with 3 the 4th composite bridges
At Angle connection.
The 4th kind of the utility model is based on Advanced Static Var Compensator of the cascade without bridging current circuit, wherein the three-phase
Main power circuit replacement includes 3 input inductance, 6 bridge arm inductance, 6 the 4th composite bridges and DC capacitors, 6 bridge arms
Inductance, 6 the 4th composite bridges and DC capacitor constitute double star and connect, the common point of two bridge arm inductance of same phase totally three,
Three common points are connected with one end of 3 input inductance respectively, and the other end of 3 input inductance is connected to three phase network.
In order to achieve the above objectives, 5th kind provided by the utility model based on cascade the novel static nothing without bridging current circuit
Work(compensator, including three-phase main power circuit, the three-phase main power circuit include 3 and input inductance and by several first group
Close 3 third composite bridges respectively constituting of bridge, 3 input inductance one end are connect with three phase network, the other end respectively with 3 thirds
Star-like connection is constituted after composite bridge series connection, wherein first composite bridge includes by two general-purpose diodes and two derailing switches
Bridge, output DC capacitor and load, two switching devices that part forms are under two upper arm of the bridge or two of the bridge
The DC output end and output DC capacitor parallel with one another of the bridge of arm, two general-purpose diodes and two switching devices composition
It is connected with load；First input terminal of second input terminal of each first composite bridge and next first composite bridge
It is sequentially connected, remaining two free ends of first composite bridge to cascade up, i.e., first of first the first composite bridge is defeated
Enter second input terminal at end and the first composite bridge of n-th, N number of first composite bridge to cascade up constitutes third combination
Bridge；The three-phase main power circuit further includes K three-phase LC filter, and wherein K is positive integer, each three-phase LC filters
By three inductance (Lfk) capacitance (Cfk) series arm composition, three inductance (L of each three-phase LC filtersfk) capacitance
(Cfk) series arm connect in a manner of corner connection with three-phase AC grid.
The 5th kind of the utility model is based on Advanced Static Var Compensator of the cascade without bridging current circuit, wherein described 3
Input inductance one end is connect with three phase network, and the other end is replaced after connecting respectively with 3 third composite bridges and constitutes Angle connection.
The 5th kind of the utility model is based on Advanced Static Var Compensator of the cascade without bridging current circuit, wherein the three-phase
Main power circuit replacement includes 3 input inductance, 6 bridge arm inductance, 6 third composite bridges and DC capacitor, 6 bridge arms
Inductance, 6 third composite bridges and DC capacitor constitute double star and connect, the common point of two bridge arm inductance of same phase totally three,
Three common points are connected with one end of 3 input inductance respectively, and the other end of 3 input inductance is connected to three phase network.
In order to achieve the above objectives, 6th kind provided by the utility model based on cascade the novel static nothing without bridging current circuit
Work(compensator, including three-phase main power circuit, the three-phase main power circuit include 3 and input inductance and by several second group
Close 3 the 4th composite bridges respectively constituting of bridge, 3 input inductance one end are connect with three phase network, the other end respectively with 3 the 4th
Star-like connection is constituted after composite bridge series connection, wherein second composite bridge includes by two general-purpose diodes and two derailing switches
Bridge, output DC capacitor and load, two switching devices that part forms are in two left arms of the bridge or two right sides of the bridge
The DC output end and output DC capacitor parallel with one another of the bridge of arm, two general-purpose diodes and two switching devices composition
It is connected with load；First input terminal of second input terminal of each second composite bridge and next second composite bridge
It is sequentially connected, remaining two free ends of second composite bridge to cascade up, i.e., first of first the second composite bridge is defeated
Enter second input terminal at end and the second composite bridge of n-th, N number of second composite bridge to cascade up constitutes the 4th combination
Bridge；The three-phase main power circuit further includes K three-phase LC filter, and wherein K is positive integer, each three-phase LC filters
By three inductance (Lfk) capacitance (Cfk) series arm composition, three inductance (L of each three-phase LC filtersfk) capacitance
(Cfk) series arm connect in a manner of corner connection with three-phase AC grid.
The 6th kind of the utility model is based on Advanced Static Var Compensator of the cascade without bridging current circuit, wherein described 3
Input inductance one end is connect with three phase network, and the other end is replaced after connecting respectively with 3 the 4th composite bridges and constitutes Angle connection.
The 6th kind of the utility model is based on Advanced Static Var Compensator of the cascade without bridging current circuit, wherein the three-phase
Main power circuit replacement includes 3 input inductance, 6 bridge arm inductance, 6 the 4th composite bridges and DC capacitors, 6 bridge arms
Inductance, 6 the 4th composite bridges and DC capacitor constitute double star and connect, the common point of two bridge arm inductance of same phase totally three,
Three common points are connected with one end of 3 input inductance respectively, and the other end of 3 input inductance is connected to three phase network.
The advantages of the utility model is based on Advanced Static Var Compensator of the cascade without bridging current circuit exists with good effect
In：A kind of novel Static Var Compensator circuit is provided.The Advanced Static Var Compensator circuit is transmitted with energy one direction
Controlled rectifier circuit based on constitute, in the Advanced Static Var Compensator circuit, energy one direction transmission it is controllable
Rectifier couples with several capacitances with the branch circuit parallel connection that inductance is in series, and the branch that capacitance is in series with inductance can both provide
Advanced First Harmonic Reactive Power, and low-order harmonic can be filtered out, the controlled rectifier by controlling the transmission of energy one direction inputs
The phase of electric current, so that it may to be reached for the purpose that system provides continuously adjustable reactive power.It is passed by controlling energy one direction
Defeated controlled rectifier generates and grid current harmonic harmonic current equal in magnitude and opposite polarity, so that it may inhibited with to reach or
Eliminate the purpose of grid current harmonic.The Advanced Static Var Compensator that the utility model is proposed both has SVG dynamic responses
Speed is fast, and harmonic content is few, and device power consumption is low, small, the series of advantages such as light-weight, it may have SVC controls are simple, price
Cheap advantage.
It is described in detail with reference to attached drawing below in conjunction with embodiment.
Description of the drawings
Fig. 1 is the utility model based on the first composite bridge in Advanced Static Var Compensator of the cascade without bridging current circuit
Circuit diagram；
Fig. 2 is the utility model based on first embodiment in Advanced Static Var Compensator of the cascade without bridging current circuit
Circuit topological structure figure；
Fig. 3 is the utility model based on the second composite bridge in Advanced Static Var Compensator of the cascade without bridging current circuit
Circuit diagram；
Fig. 4 is the utility model based on second embodiment in Advanced Static Var Compensator of the cascade without bridging current circuit
Circuit topological structure figure；
Fig. 5 is the utility model based on third composite bridge in Advanced Static Var Compensator of the cascade without bridging current circuit
Circuit diagram；
Fig. 6 is the utility model based on the 4th composite bridge in Advanced Static Var Compensator of the cascade without bridging current circuit
Circuit topology figure；
Fig. 7 is the utility model based on 3rd embodiment in Advanced Static Var Compensator of the cascade without bridging current circuit
Circuit topology figure；
Fig. 8 is the utility model based on fourth embodiment in Advanced Static Var Compensator of the cascade without bridging current circuit
Circuit topology figure；
Fig. 9 is the utility model based on the 5th embodiment in Advanced Static Var Compensator of the cascade without bridging current circuit
Circuit topology figure；
Figure 10 is the utility model based on sixth embodiment in Advanced Static Var Compensator of the cascade without bridging current circuit
Circuit topology figure；
Figure 11 is the utility model based on the 7th embodiment in Advanced Static Var Compensator of the cascade without bridging current circuit
Circuit topology figure；
Figure 12 is the utility model based on the 8th embodiment in Advanced Static Var Compensator of the cascade without bridging current circuit
Circuit topology figure；
Figure 13 is the utility model based on the 9th embodiment in Advanced Static Var Compensator of the cascade without bridging current circuit
Circuit topology figure；
Figure 14 is the utility model based on the tenth embodiment in Advanced Static Var Compensator of the cascade without bridging current circuit
Circuit topology figure；
Figure 15 is that the utility model is implemented based on the in Advanced Static Var Compensator of the cascade without bridging current circuit the 11st
The circuit topology figure of example；
Figure 16 is that the utility model is implemented based on the in Advanced Static Var Compensator of the cascade without bridging current circuit the 12nd
The circuit topology figure of example；
Figure 17 is that the utility model is implemented based on the in Advanced Static Var Compensator of the cascade without bridging current circuit the 13rd
The circuit topology figure of example；
Figure 18 is that the utility model is implemented based on the in Advanced Static Var Compensator of the cascade without bridging current circuit the 14th
The circuit topology figure of example.
Specific implementation mode
In the utility model based in the embodiment of Advanced Static Var Compensator of the cascade without bridging current circuit, nothing is cascaded
The Advanced Static Var Compensator of bridging current circuit is the circuit topology for being cascaded by several modular units and being formed a whole.
Referring to Figures 1 and 2, in the utility model based on Advanced Static Var Compensator of the cascade without bridging current circuit the
In one embodiment, main power circuit includes K filter branches, input inductance (L) and N number of first composite bridge (A), wherein K, N
For positive integer.
First composite bridge (A) includes the bridge being made of two general-purpose diodes and two switching devices, exports direct current
Hold (C0) and load (R0), two switching devices are in two upper arm of the bridge or two underarms of the bridge, two general-purpose diodes
DC output end with the bridge of two switching devices composition and output DC capacitor (C parallel with one another0) and load (R0) phase
Even；The first composite bridge (A) the composition third composite bridge (C) to cascade up, remaining two free ends of third composite bridge (C), i.e.,
Second input terminal b of the first input terminal a and the first composite bridge of n-th A of first the first composite bridge (A), through described defeated
Enter inductance (L) series connection access AC network.
Each branch route an inductance (L in K filter branchesfk) and a capacitance (Cfk) in series, K filter
Wave device branch circuit parallel connection incoming transport power grid.
With reference to Fig. 3 and Fig. 4, the utility model based on Advanced Static Var Compensator of the cascade without bridging current circuit the
In two embodiments, main power circuit includes K filter branches, input inductance (L) and N number of second composite bridge (B), wherein K, N
For positive integer.
Second composite bridge (B) includes the bridge being made of two general-purpose diodes and two switching devices, exports direct current
Hold (C1) and load (R1), two switching devices are in two left arms of the bridge or two right arms of the bridge, two general-purpose diodes
DC output end with the bridge of two switching devices composition and output DC capacitor (C parallel with one another1) and load (R1) phase
Even；Second input terminal b of each second composite bridge (B) is sequentially connected with first input terminal a of next second composite bridge,
The second composite bridge (B) the 4th composite bridge (D) of composition to cascade up, remaining two free ends of the 4th composite bridge (D), i.e., first
First input terminal a of a second composite bridge (B) and second input terminal b of the second composite bridge of n-th (B), through the input
AC network is accessed after inductance (L) series connection.
Each branch route an inductance (L in K filter branchesfk) and a capacitance (Cfk) in series, K filter
Wave device branch circuit parallel connection incoming transport power grid.
With reference to Fig. 5 and Fig. 7, the utility model based on Advanced Static Var Compensator of the cascade without bridging current circuit the
In three embodiments, including three-phase main power circuit, three-phase main power circuit include K three-phase LC filter, and wherein K is just whole
Number, 3 inputs inductance (L101-L103) and 3 third composite bridges (C) being respectively constituted by several first composite bridges (A), and 3
A input inductance (L101-L103) one end is connect with three phase network, structure after the other end is connected with 3 third composite bridges (C) respectively
At star-like connection.
Wherein, the first composite bridge (A) includes the bridge being made of two general-purpose diodes and two switching devices, exports directly
Galvanic electricity holds (C0) and load (R0), two switching devices are in two upper arm of the bridge or two underarms of the bridge, two common two
The DC output end of pole pipe and the bridge of two switching devices composition and output DC capacitor (C parallel with one another0) and load (R0)
It is connected；Second input terminal b of each first composite bridge (A) and first input terminal a of next first composite bridge (A) are successively
It is connected, remaining two free ends of the first composite bridge (A) to cascade up, i.e., first input of first the first composite bridge (A)
Second input terminal bs of a with the first composite bridge of n-th (A), N number of first composite bridge (A) to cascade up is held to constitute third
Composite bridge (C).
Each three-phase LC filters are by three inductance (L in K three-phase LC filterfk) capacitance (Cfk) series arm composition,
Three inductance (L in each three-phase LC filtersfk) capacitance (Cfk) series arm in such a way that star connects with three-phase AC grid connect
It connects.
With reference to Fig. 5 and Fig. 8, the utility model based on Advanced Static Var Compensator of the cascade without bridging current circuit the
In four embodiments, in 3rd embodiment 3 input the one end inductance (L101-L103) connect with three phase network, the other end respectively with
It is replaced after 3 third composite bridge (C) series connection and constitutes Angle connection.
With reference to Fig. 5 and Fig. 9, the utility model based on Advanced Static Var Compensator of the cascade without bridging current circuit the
In five embodiments, the replacement of three-phase main power circuit includes 3 input inductance (L101-L103), 6 bridge arms in 3rd embodiment
Inductance (L104-L109), 6 third composite bridges (C) and DC capacitor (C10), 6 bridge arm inductance (L104-L109),
6 third composite bridges (C) and DC capacitor (C10) constitute double star and connect, the common point of two bridge arm inductance of same phase totally three
A, three common points are connected with one end of 3 input inductance (L101-L103) respectively, 3 input inductance (L101-L103)
The other end be connected to three phase network.
With reference to Fig. 6 and Figure 10, in the utility model based on Advanced Static Var Compensator of the cascade without bridging current circuit
In sixth embodiment, including three-phase main power circuit, three-phase main power circuit include K three-phase LC filter, and wherein K is just whole
Number, 3 inputs inductance (L101-L103) and 3 the 4th composite bridges (D) being respectively constituted by several second composite bridges (B), and 3
A input inductance (L101-L103) one end is connect with three phase network, structure after the other end is connected with 3 the 4th composite bridges (D) respectively
At star-like connection.
Wherein, the second composite bridge (B) includes the bridge being made of two general-purpose diodes and two switching devices, exports directly
Galvanic electricity holds (C1) and load (R1), two switching devices are in two left arms of the bridge or two right arms of the bridge, two common two
The DC output end of pole pipe and the bridge of two switching devices composition and output DC capacitor (C parallel with one another1) and load (R1)
It is connected；First input terminal a of second input terminal b of each second composite bridge (B) and next second composite bridge (B) phases successively
Even, remaining two free ends of the second composite bridge (B) to cascade up, i.e., first input terminal a of first the second composite bridge (B)
With second input terminal b of the second composite bridge of n-th (B), N number of second composite bridge (B) to cascade up constitutes the 4th group
Close bridge (D).
Each three-phase LC filters are by three inductance (L in K three-phase LC filterfk) capacitance (Cfk) series arm composition,
Three inductance (L in each three-phase LC filtersfk) capacitance (Cfk) series arm in such a way that star connects with three-phase AC grid connect
It connects.
With reference to Fig. 6 and Figure 11, in the utility model based on Advanced Static Var Compensator of the cascade without bridging current circuit
In 7th embodiment, 3 input one end inductance (L101-L103) are connect with three phase network in sixth embodiment, other end difference
It is replaced after connecting with 3 the 4th composite bridges (D) and constitutes Angle connection.
With reference to Fig. 6 and Figure 12, in the utility model based on Advanced Static Var Compensator of the cascade without bridging current circuit
In 8th embodiment, the replacement of three-phase main power circuit includes 3 input inductance (L101-L103), 6 bridges in sixth embodiment
Arm inductance (L104-L109), 6 the 4th composite bridges (D) and DC capacitors (C10), 6 bridge arm inductance (L104-
L109), 6 the 4th composite bridges (D) and DC capacitor (C10) constitute double star and connect, two bridge arm inductance of same phase it is public
Point totally three, three common points are connected with one end of 3 input inductance (L101-L103) respectively, 3 input inductance (L101-
L103 the other end) is connected to three phase network.
With reference to Fig. 5 and Figure 13, in the utility model based on Advanced Static Var Compensator of the cascade without bridging current circuit
In 9th embodiment, including three-phase main power circuit, three-phase main power circuit include K three-phase LC filter, and wherein K is just whole
Number, 3 inputs inductance (L101-L103) and 3 third composite bridges (C) being respectively constituted by several first composite bridges (A), and 3
A input inductance (L101-L103) one end is connect with three phase network, structure after the other end is connected with 3 third composite bridges (C) respectively
At star-like connection.
Wherein, the first composite bridge (A) includes the bridge being made of two general-purpose diodes and two switching devices, exports directly
Galvanic electricity holds (C0) and load (R0), two switching devices are in two upper arm of the bridge or two underarms of the bridge, two common two
The DC output end of pole pipe and the bridge of two switching devices composition and output DC capacitor (C parallel with one another0) and load (R0)
It is connected；First input terminal a of second input terminal b of each first composite bridge (A) and next first composite bridge (A) phases successively
Even, remaining two free ends of the first composite bridge (A) to cascade up, i.e., first input terminal a of first the first composite bridge (A)
With second input terminal b of the first composite bridge of n-th (A), N number of first composite bridge (A) to cascade up constitutes third group
Close bridge (C).
Each three-phase LC filters are by three inductance (L in K three-phase LC filterfk) capacitance (Cfk) series arm composition,
Three inductance (L in each three-phase LC filtersfk) capacitance (Cfk) series arm in a manner of corner connection with three-phase AC grid connect
It connects.
With reference to Fig. 5 and Figure 14, in the utility model based on Advanced Static Var Compensator of the cascade without bridging current circuit
In tenth embodiment, 3 input inductance one end (L101-L103) are connect with three phase network in the 9th embodiment, other end difference
It is replaced after connecting with 3 third composite bridges (C) and constitutes Angle connection.
With reference to Fig. 5 and Figure 15, in the utility model based on Advanced Static Var Compensator of the cascade without bridging current circuit
In 11st embodiment, in the 9th embodiment three-phase main power circuit replacement include 3 input inductance (L101-L103), 6
Bridge arm inductance (L104-L109), 6 third composite bridges (C) and DC capacitor (C10), 6 bridge arm inductance (L104-
L109), 6 third composite bridges (C) and DC capacitor (C10) constitute double star and connect, two bridge arm inductance of same phase it is public
Point totally three, three common points are connected with one end of 3 input inductance (L101-L103) respectively, 3 input inductance (L101-
L103 the other end) is connected to three phase network.
With reference to Fig. 6 and Figure 16, in the utility model based on Advanced Static Var Compensator of the cascade without bridging current circuit
In 12nd embodiment, including three-phase main power circuit, three-phase main power circuit include K three-phase LC filter, and wherein K is just
Integer, 3 inputs inductance (L101-L103) and 3 the 4th composite bridges being respectively constituted by several second composite bridges (B)
(D), 3 input one end inductance (L101-L103) are connect with three phase network, and the other end is gone here and there with 3 the 4th composite bridges (D) respectively
Star-like connection is constituted after connection.
Wherein, the second composite bridge (B) includes the bridge being made of two general-purpose diodes and two switching devices, exports directly
Galvanic electricity holds (C1) and load (R1), two switching devices are in two left arms of the bridge or two right arms of the bridge, two common two
The DC output end of pole pipe and the bridge of two switching devices composition and output DC capacitor (C parallel with one another1) and load (R1)
It is connected；First input terminal a of second input terminal b of each second composite bridge (B) and next second composite bridge (B) according to
Remaining two free ends of second composite bridge (B) that are secondary to be connected, cascading up, i.e., the first of first the second composite bridge (B)
Second input terminal b of a input terminal a and the second composite bridge of n-th (B), N number of the second composite bridge (B) structure to cascade up
At the 4th composite bridge (D).
Each three-phase LC filters are by three inductance (L in K three-phase LC filterfk) capacitance (Cfk) series arm composition,
Three inductance (L in each three-phase LC filtersfk) capacitance (Cfk) series arm in a manner of corner connection with three-phase AC grid connect
It connects.
With reference to Fig. 6 and Figure 17, in the utility model based on Advanced Static Var Compensator of the cascade without bridging current circuit
In 13rd embodiment, 3 input inductance one end (L101-L103) are connect with three phase network in the 12nd embodiment, the other end
It is replaced after connecting respectively with 3 the 4th composite bridges (D) and constitutes Angle connection.
With reference to Fig. 6 and Figure 18, in the utility model based on Advanced Static Var Compensator of the cascade without bridging current circuit
In 14th embodiment, the replacement of three-phase main power circuit includes 3 input inductance (L101-L103), 6 in the 12nd embodiment
A bridge arm inductance (L104-L109), 6 the 4th composite bridges (D) and DC capacitors (C10), 6 bridge arm inductance (L104-
L109), 6 the 4th composite bridges (D) and DC capacitor (C10) constitute double star and connect, two bridge arm inductance of same phase it is public
Point totally three, three common points are connected with one end of 3 input inductance (L101-L103) respectively, 3 input inductance (L101-
L103 the other end) is connected to three phase network.
The advantages of the utility model is based on Advanced Static Var Compensator of the cascade without bridging current circuit exists with good effect
In：A kind of novel Static Var Compensator circuit is provided.The Advanced Static Var Compensator circuit is transmitted with energy one direction
Controlled rectifier circuit based on constitute, in the Advanced Static Var Compensator circuit, energy one direction transmission it is controllable
Rectifier couples with several capacitances with the branch circuit parallel connection that inductance is in series, and the branch that capacitance is in series with inductance can both provide
Advanced First Harmonic Reactive Power, and low-order harmonic can be filtered out, the controlled rectifier by controlling the transmission of energy one direction inputs
The phase of electric current, so that it may to be reached for the purpose that system provides continuously adjustable reactive power.It is passed by controlling energy one direction
Defeated controlled rectifier generates and grid current harmonic harmonic current equal in magnitude and opposite polarity, so that it may inhibited with to reach or
Eliminate the purpose of grid current harmonic.The Advanced Static Var Compensator that the utility model is proposed both has SVG dynamic responses
Speed is fast, and harmonic content is few, and device power consumption is low, small, the series of advantages such as light-weight, it may have SVC controls are simple, price
Cheap advantage.
Embodiment described above is only that preferred embodiments of the present invention are described, not to this practicality
Novel conception and scope is defined, under the premise of not departing from the utility model design scheme, engineering technology people in this field
The all variations and modifications that member makes the technical solution of the utility model, should all fall into the scope of protection of the utility model, this
The claimed technology contents of utility model have all been recorded in detail in the claims.
Claims (14)
1. based on Advanced Static Var Compensator of the cascade without bridging current circuit, including main power circuit, the main power circuit
Including input inductance (L) and N number of no bridge circuit, wherein N is positive integer, and no bridge circuit is using the first composite bridge (A), described first
Composite bridge (A) includes the bridge being made of two general-purpose diodes and two switching devices, exports DC capacitor (C0) and load
(R0), two switching devices are in two upper arm of the bridge or two underarms of the bridge, two general-purpose diodes and two switches
The DC output end of the bridge of device composition and output DC capacitor (C parallel with one another0) and load (R0) be connected；The main work(
Rate circuit includes N number of cascade first composite bridge (A), wherein second input of each first composite bridge (A)
End (b) and first input terminal (a) of next first composite bridge (A) are sequentially connected, described first group to cascade up
It closes bridge (A) and constitutes third composite bridge (C), remaining two free ends of third composite bridge (C), i.e. first the first composite bridge (A)
First input terminal (a) and the first composite bridge of n-th (A) second input terminal (b), through the input inductance (L) connect
Incoming transport power grid, it is characterised in that：The main power circuit further includes by inductance (Lfk) capacitance (Cfk) K in series
Filter branches, wherein K are positive integer, K filter branches parallel connection incoming transport power grid.
2. based on Advanced Static Var Compensator of the cascade without bridging current circuit, including main power circuit, the main power circuit
Including input inductance (L) and N number of no bridge circuit, wherein N is positive integer, and no bridge circuit is using the second composite bridge (B), described second
Composite bridge (B) includes the bridge being made of two general-purpose diodes and two switching devices, exports DC capacitor (C1) and load
(R1), two switching devices are in two left arms of the bridge or two right arms of the bridge, two general-purpose diodes and two switches
The DC output end of the bridge of device composition and output DC capacitor (C parallel with one another1) and load (R1) be connected；The main work(
Rate circuit includes N number of cascade second composite bridge (B), wherein second input terminal (b) of second composite bridge (B) with
First input terminal (a) of next second composite bridge (B) is sequentially connected, second composite bridge (B) to cascade up
Constitute the 4th composite bridge (D), remaining two free ends of the 4th composite bridge (D), i.e., first of first the second composite bridge (B)
Second input terminal (b) of input terminal (a) and the second composite bridge of n-th (B), through the input inductance (L) series connection incoming transport
Power grid, it is characterised in that：The main power circuit further includes by inductance (Lfk) capacitance (Cfk) K filter branch in series
Road, wherein K are positive integer, K filter branches parallel connection incoming transport power grid.
3. based on Advanced Static Var Compensator of the cascade without bridging current circuit, including three-phase main power circuit, the three-phase master
Power circuit includes 3 and inputs 3 third groups inductance (L101-L103) and respectively constituted by several first composite bridges (A)
Close bridge (C), 3 input the one end inductance (L101-L103) connect with three phase network, the other end respectively with 3 third composite bridges
(C) star-like connection is constituted after connecting, wherein first composite bridge (A) includes by two general-purpose diodes and two derailing switches
The bridge of part composition, output DC capacitor (C0) and load (R0), two switching devices are in two upper arm or the bridge of the bridge
The DC output end of the bridge of two underarms, two general-purpose diodes and two switching devices composition and output parallel with one another are straight
Galvanic electricity holds (C0) and load (R0) be connected；Second input terminal (b) and next described first of each first composite bridge (A)
First input terminal (a) of composite bridge (A) is sequentially connected, remaining two free ends of first composite bridge (A) to cascade up,
First input terminal (a) of i.e. first the first composite bridge (A) and second input terminal (b) of the first composite bridge of n-th (A), N
A first composite bridge (A) to cascade up constitutes third composite bridge (C)；It is characterized in that：The three-phase main power circuit
Further include K three-phase LC filter, wherein K is positive integer, and each three-phase LC filters are by three inductance (Lfk) capacitance
(Cfk) series arm composition, three inductance (L of each three-phase LC filtersfk) capacitance (Cfk) series arm is with the star side of connecing
Formula is connect with three-phase AC grid.
4. according to claim 3 based on Advanced Static Var Compensator of the cascade without bridging current circuit, it is characterised in that：
Wherein it is described 3 input the one end inductance (L101-L103) connect with three phase network, the other end respectively with 3 third composite bridges
(C) it is replaced after connecting and constitutes Angle connection.
5. according to claim 3 based on Advanced Static Var Compensator of the cascade without bridging current circuit, it is characterised in that：
The wherein described three-phase main power circuit replacement includes 3 input inductance (L101-L103), 6 bridge arm inductance (L104-
L109), 6 third composite bridges (C) and DC capacitor (C10), 6 bridge arm inductance (L104-L109), 6 third combinations
Bridge (C) constitutes double star with DC capacitor (C10) and connects, and the common point of two bridge arm inductance of same phase totally three, three public
Point is connected with one end of 3 input inductance (L101-L103) respectively, the other end connection of 3 input inductance (L101-L103)
To three phase network.
6. based on Advanced Static Var Compensator of the cascade without bridging current circuit, including three-phase main power circuit, the three-phase master
Power circuit includes that 3 inputs inductance (L101-L103) and respectively constituted by several second composite bridges (B) 3 the 4th group
Close bridge (D), 3 input the one end inductance (L101-L103) connect with three phase network, the other end respectively with 3 the 4th composite bridges
(D) star-like connection is constituted after connecting, wherein second composite bridge (B) includes by two general-purpose diodes and two derailing switches
The bridge of part composition, output DC capacitor (C1) and load (R1), two switching devices are in two left arms or the bridge of the bridge
The DC output end of the bridge of two right arms, two general-purpose diodes and two switching devices composition and output parallel with one another are straight
Galvanic electricity holds (C1) and load (R1) be connected；Second input terminal (b) and next described second of each second composite bridge (B)
First input terminal (a) of composite bridge (B) is sequentially connected, remaining two free ends of second composite bridge (B) to cascade up,
First input terminal (a) of i.e. first the second composite bridge (B) and second input terminal (b) of the second composite bridge of n-th (B), N
A second composite bridge (B) to cascade up constitutes the 4th composite bridge (D)；It is characterized in that：The three-phase main power circuit
Further include K three-phase LC filter, wherein K is positive integer, and each three-phase LC filters are by three inductance (Lfk) capacitance
(Cfk) series arm composition, three inductance (L of each three-phase LC filtersfk) capacitance (Cfk) series arm is with the star side of connecing
Formula is connect with three-phase AC grid.
7. according to claim 6 based on Advanced Static Var Compensator of the cascade without bridging current circuit, it is characterised in that：
Wherein it is described 3 input the one end inductance (L101-L103) connect with three phase network, the other end respectively with 3 the 4th composite bridges
(D) it is replaced after connecting and constitutes Angle connection.
8. according to claim 6 based on Advanced Static Var Compensator of the cascade without bridging current circuit, it is characterised in that：
The wherein described three-phase main power circuit replacement includes 3 input inductance (L101-L103), 6 bridge arm inductance (L104-
L109), 6 the 4th composite bridges (D) and DC capacitor (C10), 6 bridge arm inductance (L104-L109), 6 the 4th combinations
Bridge (D) constitutes double star with DC capacitor (C10) and connects, and the common point of two bridge arm inductance of same phase totally three, three public
Point is connected with one end of 3 input inductance (L101-L103) respectively, the other end connection of 3 input inductance (L101-L103)
To three phase network.
9. based on Advanced Static Var Compensator of the cascade without bridging current circuit, including three-phase main power circuit, the three-phase master
Power circuit includes 3 and inputs 3 third groups inductance (L101-L103) and respectively constituted by several first composite bridges (A)
Close bridge (C), 3 input the one end inductance (L101-L103) connect with three phase network, the other end respectively with 3 third composite bridges
(C) star-like connection is constituted after connecting, wherein first composite bridge (A) includes by two general-purpose diodes and two derailing switches
The bridge of part composition, output DC capacitor (C0) and load (R0), two switching devices are in two upper arm or the bridge of the bridge
The DC output end of the bridge of two underarms, two general-purpose diodes and two switching devices composition and output parallel with one another are straight
Galvanic electricity holds (C0) and load (R0) be connected；Second input terminal (b) and next described first of each first composite bridge (A)
First input terminal (a) of composite bridge (A) is sequentially connected, remaining two free ends of first composite bridge (A) to cascade up,
First input terminal (a) of i.e. first the first composite bridge (A) and second input terminal (b) of the first composite bridge of n-th (A), N
A first composite bridge (A) to cascade up constitutes third composite bridge (C)；It is characterized in that：The three-phase main power circuit
Further include K three-phase LC filter, wherein K is positive integer, and each three-phase LC filters are by three inductance (Lfk) capacitance
(Cfk) series arm composition, three inductance (L of each three-phase LC filtersfk) capacitance (Cfk) series arm is with corner connection side
Formula is connect with three-phase AC grid.
10. according to claim 9 based on Advanced Static Var Compensator of the cascade without bridging current circuit, feature exists
In：Wherein 3 inputs one end inductance (L101-L103) is connect with three phase network, and the other end is combined with 3 thirds respectively
It is replaced after bridge (C) series connection and constitutes Angle connection.
11. according to claim 9 based on Advanced Static Var Compensator of the cascade without bridging current circuit, feature exists
In：The wherein described three-phase main power circuit replacement includes 3 input inductance (L101-L103), 6 bridge arm inductance (L104-
L109), 6 third composite bridges (C) and DC capacitor (C10), 6 bridge arm inductance (L104-L109), 6 third combinations
Bridge (C) constitutes double star with DC capacitor (C10) and connects, and the common point of two bridge arm inductance of same phase totally three, three public
Point is connected with one end of 3 input inductance (L101-L103) respectively, the other end connection of 3 input inductance (L101-L103)
To three phase network.
12. based on Advanced Static Var Compensator of the cascade without bridging current circuit, including three-phase main power circuit, the three-phase master
Power circuit includes that 3 inputs inductance (L101-L103) and respectively constituted by several second composite bridges (B) 3 the 4th group
Close bridge (D), 3 input the one end inductance (L101-L103) connect with three phase network, the other end respectively with 3 the 4th composite bridges
(D) star-like connection is constituted after connecting, wherein second composite bridge (B) includes by two general-purpose diodes and two derailing switches
The bridge of part composition, output DC capacitor (C1) and load (R1), two switching devices are in two left arms or the bridge of the bridge
The DC output end of the bridge of two right arms, two general-purpose diodes and two switching devices composition and output parallel with one another are straight
Galvanic electricity holds (C1) and load (R1) be connected；Second input terminal (b) and next described second of each second composite bridge (B)
First input terminal (a) of composite bridge (B) is sequentially connected, remaining two free ends of second composite bridge (B) to cascade up,
First input terminal (a) of i.e. first the second composite bridge (B) and second input terminal (b) of the second composite bridge of n-th (B), N
A second composite bridge (B) to cascade up constitutes the 4th composite bridge (D)；It is characterized in that：The three-phase main power circuit
Further include K three-phase LC filter, wherein K is positive integer, and each three-phase LC filters are by three inductance (Lfk) capacitance
(Cfk) series arm composition, three inductance (L of each three-phase LC filtersfk) capacitance (Cfk) series arm is with corner connection side
Formula is connect with three-phase AC grid.
13. according to claim 12 based on Advanced Static Var Compensator of the cascade without bridging current circuit, feature exists
In：Wherein 3 inputs one end inductance (L101-L103) is connect with three phase network, and the other end is combined with 3 the 4th respectively
It is replaced after bridge (D) series connection and constitutes Angle connection.
14. according to claim 12 based on Advanced Static Var Compensator of the cascade without bridging current circuit, feature exists
In：The wherein described three-phase main power circuit replacement includes 3 input inductance (L101-L103), 6 bridge arm inductance (L104-
L109), 6 the 4th composite bridges (D) and DC capacitor (C10), 6 bridge arm inductance (L104-L109), 6 the 4th combinations
Bridge (D) constitutes double star with DC capacitor (C10) and connects, and the common point of two bridge arm inductance of same phase totally three, three public
Point is connected with one end of 3 input inductance (L101-L103) respectively, the other end connection of 3 input inductance (L101-L103)
To three phase network.
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|---|---|---|---|
| CN201820124107.0U CN207947609U (en) | 2018-01-24 | 2018-01-24 | Based on Advanced Static Var Compensator of the cascade without bridging current circuit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109546877A (en) * | 2018-12-02 | 2019-03-29 | 常州天曼智能科技有限公司 | A kind of static synchronous compensating device |
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2018
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109546877A (en) * | 2018-12-02 | 2019-03-29 | 常州天曼智能科技有限公司 | A kind of static synchronous compensating device |
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