CN108574271B - A kind of AC circuit breaker - Google Patents
A kind of AC circuit breaker Download PDFInfo
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- CN108574271B CN108574271B CN201810270443.0A CN201810270443A CN108574271B CN 108574271 B CN108574271 B CN 108574271B CN 201810270443 A CN201810270443 A CN 201810270443A CN 108574271 B CN108574271 B CN 108574271B
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- mechanical switch
- fast mechanical
- module
- power grid
- thyristor
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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
- H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/02—Details
- H02H3/05—Details with means for increasing reliability, e.g. redundancy arrangements
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/08—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current
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- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
- Emergency Protection Circuit Devices (AREA)
Abstract
The present invention relates to a kind of AC circuit breakers, comprising: double split reactors and two-way cutoff device；After one end of two windings of double split reactors is connected in parallel, the other end is connected in series with two-way cutoff device respectively；Every road cutoff device structure is identical and is connected in parallel；Every road cutoff device includes: Fast mechanical switch, full-control type solid state switching module, thyristor module and arrester；Fast mechanical switch is connected in parallel with thyristor module, arrester respectively after being connected in series with full-control type solid state switching module；The equilibrium assignment to alternating current is realized by double split reactors；By the combination of Fast mechanical switch, full-control type solid-state switch, thyristor, the reliable disjunction to fault current is realized.When Power System Steady-state is run, Low ESR is presented in breaker, small to electric network influencing；, it can be achieved that the reliable disjunction of fault current when power grid generation short trouble.The breaker strong breaking capacity, effectively improves the safety and reliability of operation of power networks.
Description
Technical field
The present invention relates to a kind of AC circuit breaker topology, in particular to a kind of high-voltage AC breaker for power grid is opened up
It flutters.
Background technique
With the rapid development of the national economy, demand of the society to electric power is continuously increased, the continuous of electric system has been driven
Development, single machine and station capacity, substation capacity, city and center of industry load be continuously increased, allow for electric system it
Between interconnect, short circuit current level in power grids at different levels is continuously improved, and short trouble is to electric system and its connected electrical equipment
Destructiveness it is also increasing.However, due to regular circuit breakers Breaking capacity and to cut-off speed limited, caused by causing short circuit
Bulk power grid transient stability problem is than more prominent.
For AC fault is quickly and effectively isolated, power grid relevant device safe and stable operation is ensured, and reduce failure to exchange
System, which runs bring, to be influenced, and needs to develop that Breaking capacity is bigger, cut-offs the faster high-voltage AC breaker of speed.Alternating current interruption
Device is control and protection equipment particularly important in power grid, can effectively cut-off short-circuit current at the appointed time, ensure
Power grid security reliability service.
Summary of the invention
The technology of the present invention solves the problems, such as: overcoming the deficiencies of the prior art and provide a kind of AC circuit breaker, has steady-state operation
It is lost small, failure can be quickly cut off when there is short trouble, have that Breaking capacity is big, cut-offs the spies such as speed is fast, structure is simple
Point.
One of the technology of the present invention solution: a kind of AC circuit breaker, comprising: double split reactors and two-way shutdown dress
It sets；After one end of two windings of double split reactors is connected in parallel, the other end is connected with two-way cutoff device company respectively
It connects；Every road cutoff device structure is identical and is connected in parallel；Every road cutoff device includes: that Fast mechanical switch, full-control type solid-state are opened
Close module, thyristor module and arrester；Fast mechanical switch and full-control type solid state switching module be connected in series after respectively with crystalline substance
Brake tube module, arrester are connected in parallel.
The two of the technology of the present invention solution: a kind of AC circuit breaker, comprising: double split reactors and claim 1 institute
State AC circuit breaker；After one end of two windings of double split reactors is connected in parallel, the other end respectively with two rights
It is required that 1 AC circuit breaker is connected in series.
The three of the technology of the present invention solution: a kind of AC circuit breaker, the AC circuit breaker as described in several claims 1
It is connected in parallel composition.
The four of the technology of the present invention solution: a kind of AC circuit breaker, the AC circuit breaker are connected by three branch circuit parallel connections
Be connected together composition, is connected in series constitutes for Fast mechanical switch and full-control type solid state switching module all the way；Another way is double points
Split two windings of reactor one end be connected in parallel after, the other end concatenates composition with two thyristor modules respectively；Third road
For arrester.
The five of the technology of the present invention solution: a kind of AC circuit breaker, comprising: double split reactors and two-way shutdown dress
It sets；After one end of two windings of double split reactors is connected in parallel, the other end is connected with two-way cutoff device company respectively
It connects；Every road cutoff device structure is identical and is connected in parallel；Every road cutoff device is linked together by two branch circuit parallel connections again and is constituted,
It is to be concatenated to constitute with full-control type solid state switching module by a Fast mechanical switch all the way；Another way be include: another quickly
Mechanical switch, a thyristor module and two arresters, another Fast mechanical switch and an arrester and after connecing again with
Thyristor module and another arrester connected with each other concatenates.
The six of the technology of the present invention solution: a kind of AC circuit breaker, comprising: double split reactors and two-way shutdown dress
It sets；After one end of two windings of double split reactors is connected in parallel, the other end is connected with two-way cutoff device company respectively
It connects；Every road cutoff device structure is identical and is connected in parallel；Every road cutoff device include: Fast mechanical switch, thyristor module and
Two arresters；Fast mechanical switch and an arrester and after connecing, then it is in parallel with thyristor module and another arrester after
Concatenation.
The number of turns of two windings in double split reactors is identical, different name end is connected, flow direction is opposite.
The thyristor module is the combination of two thyristor controlled series compensation reverse parallel connections.
The full-control type solid state switching module is the combination of two IGBT valve group differential concatenations with anti-paralleled diode, institute
It states IGBT valve group also and could alternatively be mutually isostructural IGCT valve group.
The Fast mechanical switch includes at least one Fast mechanical switch series component.
A kind of breaking method of alternating current interruption as described in one of aforementioned schemes of the invention is realized are as follows: power grid is normally steady
When state is run, Fast mechanical switch, full-control type solid state switching module are on state, and thyristor module is off shape
State；Two winding values in double split reactors are small, and electric current is equal, flow direction is mutually offset instead, normally transports to power grid
Row does not influence；When short trouble occurs for power grid, power network current is increased rapidly, the electric current in two windings of double split reactors
It is equal；When power grid is detected short trouble, shutdown operation is applied to Fast mechanical switch, full-control type solid state switching module,
Electric current is transferred to thyristor module simultaneously；Fast mechanical switch is realized without the quick disjunction of arc；When the electricity for flowing through thyristor module
When flowing through zero, thyristor module turns off immediately；Route dump energy is released by arrester, is properly completed failure disjunction.
A kind of breaking method of alternating current interruption as described in the two of aforementioned schemes of the invention is realized are as follows: power grid is normally steady
When state is run, Fast mechanical switch, full-control type solid state switching module are on state, and thyristor module is off shape
State；Two winding values in double split reactors are small, and electric current is equal, flow direction is mutually offset instead, normally transports to power grid
Row does not influence；When short trouble occurs for power grid, power network current is increased rapidly, the electric current in two windings of double split reactors
It is equal；When power grid is detected short trouble, shutdown operation is applied to Fast mechanical switch, full-control type solid state switching module,
Electric current is transferred to thyristor module simultaneously；Fast mechanical switch is realized without the quick disjunction of arc；When the electricity for flowing through thyristor module
When flowing through zero, thyristor module turns off immediately；Route dump energy is released by arrester, is properly completed failure disjunction.
A kind of breaking method of alternating current interruption as described in the three of aforementioned schemes of the invention is realized are as follows: power grid is normally steady
When state is run, Fast mechanical switch, full-control type solid state switching module are on state, and thyristor module is off shape
State；Two winding values in double split reactors are small, and electric current is equal, flow direction is mutually offset instead, normally transports to power grid
Row does not influence；When short trouble occurs for power grid, power network current is increased rapidly, the electric current in two windings of double split reactors
It is equal；When power grid is detected short trouble, shutdown operation is applied to Fast mechanical switch, full-control type solid state switching module,
Electric current is transferred to thyristor module simultaneously；Fast mechanical switch is realized without the quick disjunction of arc；When the electricity for flowing through thyristor module
When flowing through zero, thyristor module turns off immediately；Route dump energy is released by arrester, is properly completed failure disjunction.
A kind of breaking method of alternating current interruption as described in the four of aforementioned schemes of the invention is realized are as follows: power grid is normally steady
When state is run, Fast mechanical switch and full-control type solid state switching module are on state, and two thyristor modules, which are in, to be closed
Conjunction state, but because the pressure drop of Fast mechanical switch and full-control type solid state switching module is less than the conduction voltage drop of thyristor module, it is double
Split reactor and two thyristor modules do not work, do not influence on power grid normal operation；When short trouble occurs for power grid,
Power network current increases rapidly, and when power grid is detected short trouble, applies to Fast mechanical switch, full-control type solid state switching module
Shutdown is added to operate；Short circuit current is transferred to thyristor module, and winding L11 is equal with the electric current in winding L12；Fast mechanical switch
It realizes without the quick disjunction of arc；When flowing through the current over-zero of thyristor module, thyristor module turns off immediately；Route dump energy
It is released by arrester, is properly completed failure disjunction.
A kind of breaking method of alternating current interruption as described in the five of aforementioned schemes of the invention is realized are as follows: power grid is normally steady
When state is run, Fast mechanical switch, full-control type solid state switching module are on state, and thyristor module is off shape
State；Two winding values in double split reactors are small, and electric current is equal, flow direction is mutually offset instead, normally transports to power grid
Row does not influence；When power grid is detected short trouble, shutdown is applied to Fast mechanical switch, full-control type solid state switching module
Operation, while electric current is transferred to thyristor module and another Fast mechanical switch；Then to another Fast mechanical switch
Apply breaking operation；Fast mechanical switch is realized without the quick disjunction of arc；When flowing through the current over-zero of thyristor module, thyristor
Module turns off immediately, the also natural disjunction of another Fast mechanical switch；Route dump energy is released by arrester, is properly completed
Failure disjunction.
A kind of breaking method of alternating current interruption as described in the six of aforementioned schemes of the invention is realized are as follows: power grid is normally steady
When state is run, Fast mechanical switch, thyristor module are on state, two winding values in double split reactors
It is small, and electric current is equal, flow direction is mutually offset instead, does not influence on power grid normal operation；When power grid is detected short-circuit event
When barrier, separating brake Fast mechanical switch immediately, and close the conducting trigger signal of thyristor module；When the electricity for flowing through thyristor module
When flowing through zero, thyristor module turns off immediately, while Fast mechanical switch also natural disjunction；Route dump energy passes through arrester
It releases, is properly completed failure disjunction.
The advantages of the present invention over the prior art are that:
(1) AC circuit breaker of the present invention can realize the reliable quick disjunction to short circuit current, so that network system be protected to pacify
Quan Xing.
(2) strong breaking capacity of breaker of the present invention, can modularized design, Breaking capacity is big.
(3) the double split reactors of present invention application, reduce stable state electric energy loss, do not cause pressure drop and harmonic wave dry in power grid
It disturbs.
(4) the entire topological structure of the present invention is simple, Yi Shixian, high reliablity.
Detailed description of the invention
Fig. 1 is the circuit diagram of the specific embodiment of the invention 1；
Fig. 2 is the circuit diagram of the specific embodiment of the invention 2；
Fig. 3 is the circuit diagram of the specific embodiment of the invention 3；
Fig. 4 is the circuit diagram of the specific embodiment of the invention 4；
Fig. 5 is the circuit diagram of the specific embodiment of the invention 5；
Fig. 6 is the circuit diagram of the specific embodiment of the invention 6.
Specific embodiment
The invention will be further described in the following with reference to the drawings and specific embodiments:
As shown in Figure 1, specific embodiments of the present invention 1 are a kind of single phase ac breaker.The single phase ac breaker packet
Include double split reactor L0, Fast mechanical switch K01, Fast mechanical switch K02, full-control type solid state switching module Q01, full-control type
Solid state switching module Q02, thyristor module T01, thyristor module T02, arrester MOV01 and arrester MOV02.Described is double
Split reactor L0 is made of winding L01 and winding L02, and winding L01 is identical with winding L02 the number of turns, different name end is connected, magnetic flux side
To opposite.The thyristor module T01 and thyristor module T02 is the combination of two thyristor controlled series compensation reverse parallel connections.Institute
The full-control type solid state switching module Q01 and full-control type solid state switching module Q02 stated is two IGBT with anti-paralleled diode
The combination of valve group differential concatenation, the IGBT valve group also could alternatively be mutually isostructural IGCT valve group.The quick machine
Tool switch K01 and Fast mechanical switch K02 includes at least one Fast mechanical switch series component.
The Fast mechanical switch K01 and full-control type solid state switching module Q01 be connected in series in tie point j01 with connect
Between point b, thyristor module T01 and arrester MOV01 are both connected between tie point j01 and tie point b, thyristor module
T01 and arrester MOV01 are connected in parallel.Fast mechanical switch K02 is connected in series in full-control type solid state switching module Q02 and connect
Between point j02 and tie point b, thyristor module T02 and arrester MOV02 are both connected between tie point j02 and tie point b,
Thyristor module T02 and arrester MOV02 are connected in parallel.One end of the winding L01 of double split reactor L0 and the one of winding L02
End is connected in tie point a in parallel, and the other end of winding L01 is connected to tie point j01, and the other end of winding L02 is connected to connection
Point j02.AC power source uACFor AC network phase voltage, RLFor equivalent load.It is connected to after AC power source and breaker B series connection
Between contact a and ground, load is connected between tie point b and ground, and the dashed box part between tie point a and tie point b, which is constituted, hands over
Flow breaker.
When power grid normal steady state is run, Fast mechanical switch K01, Fast mechanical switch K02, full-control type solid state switching module
Q01 and full-control type solid state switching module Q02 is on state, and thyristor module T01 and thyristor module T02 are off
State.The winding L01 and winding L02 of double split reactor L0 passes through magnetic circuit reverse coupled, the value of winding L01 and winding L02
Small, winding L01 is equal with the electric current of winding L02, flow direction is mutually offset instead, so that the reactance of double split reactor L0 is almost
It is zero, system is operated normally substantially without influence.Power network current access is winding L01, Fast mechanical switch K01, full-control type are solid
State switch module Q01 and winding L02, Fast mechanical switch K02 and full-control type solid state switching module Q02.
When short trouble occurs for power grid, power network current is increased rapidly, the winding L01 and winding L02 of double split reactor L0
In electric current it is equal, when protecting system detection to short trouble, immediately to Fast mechanical switch K01, Fast mechanical switch
K02, full-control type solid state switching module Q01 and full-control type solid state switching module Q02 apply shutdown operation, while electric current quickly being turned
Move to thyristor module T01 and thyristor module T02；Full-control type solid state switching module Q01 and full-control type solid state switching module Q02
Complete switched off after very short time postpones, Fast mechanical switch K01 and Fast mechanical switch K02 after the delay of intrinsic separating brake,
The separating brake under zero current low-voltage operating condition, realizes the quick disjunction of no arc；When flowing through thyristor module T01 and thyristor mould
When the current over-zero of block T02, thyristor module T01 and thyristor module T02 are turned off immediately；If tie point j01 and tie point b it
Between voltage and tie point j02 and tie point b between voltage rise to arrester MOV01's and arrester MOV02 respectively
When action value, route dump energy is released by arrester MOV01 and arrester MOV02 to zero, is properly completed failure disjunction.
AC circuit breaker of the invention has many advantages, such as: breaker makes electric current in winding by double split reactor L0
L01 is evenly distributed with winding L02.When power grid normal steady state is run, breaker is small to electric network influencing and loss is low.Occur in power grid
When short trouble, full-control type solid state switching module Q01, full-control type solid state switching module Q02, thyristor module T01 and thyristor
Module T02 realize Fast mechanical switch K01 and Fast mechanical switch K02 without the quick disjunction of arc；Pass through thyristor module T01
The blocking to fault current is completed in the characteristic that current zero-crossing point turns off naturally with thyristor module T02, realizes faulty line
Isolation.Breaker topological structure is simple, easily realizes etc., which can fast implement the isolation to faulty line, and short circuit
Current breaking capacity is big, to effectively improve the safety and reliability of operation of power networks.
Fig. 2 show specific embodiments of the present invention 2.The single phase ac breaker include the first module Unit1 ...,
N-th module Unitn.Wherein, the first module Unit1 is by double split reactor L1, Fast mechanical switch K11, Fast mechanical switch
K12, full-control type solid state switching module Q11, full-control type solid state switching module Q12, thyristor module T11, thyristor module T12,
Arrester MOV11 and arrester MOV12 is constituted ... ..., and successively, the n-th module Unitn is by double split reactor Ln, Quick mechanical
Switch Kn1, Fast mechanical switch Kn2, full-control type solid state switching module Qn1, full-control type solid state switching module Qn2, thyristor mould
Block Tn1, thyristor module Tn2, arrester MOVn1 and arrester MOVn2 are constituted.Double split reactor L1 by winding L11 and around
Group L12 is constituted ... ..., and successively, double split reactor Ln are made of winding Ln1 and winding Ln2.
Double split reactor L1, Fast mechanical switch K11, Fast mechanical switch K12, full-control type in first module Unit1
Solid state switching module Q11, full-control type solid state switching module Q12, thyristor module T11, thyristor module T12, arrester MOV11
With split reactor L0 double in the connection type and specific embodiment 1 of arrester MOV12, Fast mechanical switch K01, Quick mechanical
Switch K02, full-control type solid state switching module Q01, full-control type solid state switching module Q02, thyristor module T01, thyristor module
T02, arrester MOV01 are identical with the connection type of arrester MOV02 ... ..., successively, double division reactance in the n-th module Unitn
Device Ln, Fast mechanical switch Kn1, Fast mechanical switch Kn2, full-control type solid state switching module Qn1, full-control type solid state switching module
The connection type and specific implementation of Qn2, thyristor module Tn1, thyristor module Tn2, arrester MOVn1 and arrester MOVn2
It is double split reactor L0 in example 1, Fast mechanical switch K01, Fast mechanical switch K02, full-control type solid state switching module Q01, complete
The company of control type solid state switching module Q02, thyristor module T01, thyristor module T02, arrester MOV01 and arrester MOV02
It is identical to connect mode.First module Unit1 is connected between tie point a and tie point b ..., the n-th module Unitn is connected to
Between contact a and tie point b, the first module Unit1 ..., the n-th module Unitn be parallel.AC power source and disconnected
It is connected between tie point a and ground after road device B series connection, load is connected between tie point b and ground.
Double split reactor L1 of specific embodiments of the present invention 2, Fast mechanical switch K11, Fast mechanical switch K12,
Full-control type solid state switching module Q11, it full-control type solid state switching module Q12, thyristor module T11, thyristor module T12, takes shelter from the thunder
Device MOV11 and arrester MOV12 ... ..., double split reactor Ln, Fast mechanical switch Kn1, Fast mechanical switch Kn2, full control
Type solid state switching module Qn1, full-control type solid state switching module Qn2, thyristor module Tn1, thyristor module Tn2, arrester
MOVn1 and arrester MOVn2 all has double split reactor L0 corresponding with specific embodiments of the present invention 1, Quick mechanical
Switch K01, Fast mechanical switch K02, full-control type solid state switching module Q01, full-control type solid state switching module Q02, thyristor mould
Block T01, thyristor module T02, arrester MOV01 and the identical structure of arrester MOV02 and working principle.
Specific embodiments of the present invention 2 have working principle identical with specific embodiment 1.It is set by multimode blocking structure
Meter, improves the Breaking capacity of breaker.
Fig. 3 show specific embodiments of the present invention 3.The single phase ac breaker includes double split reactor L1, quickly
Mechanical switch K1, full-control type solid state switching module Q1, thyristor module T11, thyristor module T12, arrester MOV1.Described
Double split reactor L1 are made of winding L11 and winding L12, and winding L11 is identical with winding L12 the number of turns, different name end is connected, magnetic flux
It is contrary.The thyristor module T11 and thyristor module T12 is the combination of two thyristor controlled series compensation reverse parallel connections.
The full-control type solid state switching module Q1 is the combination of two IGBT valve group differential concatenations with anti-paralleled diode, described
IGBT valve group also could alternatively be mutually isostructural IGCT valve group.The Fast mechanical switch K1 includes at least one quick machine
Tool switchs series component.
After Fast mechanical switch K1 connects with full-control type solid state switching module Q1, it is connected in parallel and connect with arrester MOV1
Between point a and tie point b.One end of the winding L11 of double split reactor L1 and one end of winding L12 are connected in tie point in parallel
A, the other end of winding L11 are connected to tie point j11, and the other end of winding L12 is connected to tie point j12, and winding L11 is through connecting
Point j11 and thyristor module T11 are connected in series between tie point a and tie point b, and winding L12 is through tie point j12 and thyristor
Module T12 is connected in series between tie point a and tie point b.AC power source uACFor AC network phase voltage, RLFor equivalent negative
It carries.It is connected between tie point a and ground after AC power source and breaker B series connection, load is connected between tie point b and ground, even
Dashed box part between contact a and tie point b constitutes AC circuit breaker.
Double split reactor L1 of specific embodiments of the present invention 3 have and double split reactor L0 of specific embodiment 1
Identical structure and working principle.
When power grid normal steady state is run, Fast mechanical switch K1 and full-control type solid state switching module Q1 are in conducting shape
State, thyristor module T11 and thyristor module T12 are in closed state, but because Fast mechanical switch K1 and full-control type solid-state are opened
The pressure drop for closing module Q1 is less than the conduction voltage drop of T11 or T12, double split reactor L1, thyristor module T11 and thyristor module
T12 does not work, does not influence substantially on system normal operation.Power network current access is Fast mechanical switch K1 and full-control type is solid
State switch module Q1.
When short trouble occurs for power grid, power network current is increased rapidly, right immediately when protecting system detection to short trouble
Fast mechanical switch K1 and full-control type solid state switching module Q1 applies shutdown operation；Since full-control type solid state switching module Q1 is quick
Shutdown, short circuit current are transferred to thyristor module T11 and thyristor by the winding L11 and winding L12 of double split reactor L1
Module T12, winding L11 are equal with the electric current in winding L12；Fast mechanical switch K1 is after the delay of intrinsic separating brake, in zero electricity
Separating brake under low-voltage operating condition is flowed, the quick disjunction of no arc is realized；When the electricity for flowing through thyristor module T11 and thyristor module T12
When flowing through zero, thyristor module T11 and thyristor module T12 are turned off immediately；If on the voltage between tie point a and tie point b
When rising to the action value of arrester MOV1, route dump energy is released by arrester MOV1 to zero, is properly completed failure disjunction.
Fig. 4 show specific embodiments of the present invention 4.The single phase ac breaker includes double split reactor L1, double points
Split reactor L2, double split reactor L3, Fast mechanical switch K21, Fast mechanical switch K22, Fast mechanical switch K31, fast
Fast mechanical switch K32, full-control type solid state switching module Q21, full-control type solid state switching module Q22, full-control type solid state switching module
Q31, full-control type solid state switching module Q32, thyristor module T21, thyristor module T22, thyristor module T31, thyristor mould
Block T32, arrester MOV21, arrester MOV22, arrester MOV31 and arrester MOV32.Double split reactor L1 by
Winding L11 and winding L12 is constituted, and double split reactor L2 are made of winding L21 and winding L22, double divisions
Reactor L3 is made of winding L31 and winding L32.
Double split reactor L2, Fast mechanical switch K21, Fast mechanical switch K22, full-control type solid-state switch mould
Block Q21, full-control type solid state switching module Q22, thyristor module T21, thyristor module T22, arrester MOV21 and arrester
Double split reactor L0 in the connection type of MOV22 and specific embodiment 1, Fast mechanical switch K01, Fast mechanical switch K02,
Full-control type solid state switching module Q01, it full-control type solid state switching module Q02, thyristor module T01, thyristor module T02, takes shelter from the thunder
Device MOV01 is identical with the connection type of arrester MOV02.Double split reactor L3, Fast mechanical switch K31, quickly
Mechanical switch K32, full-control type solid state switching module Q31, full-control type solid state switching module Q32, thyristor module T31, thyristor
Double split reactor L0 in module T32, the connection type of arrester MOV31 and arrester MOV32 and specific embodiment 1, quickly
Mechanical switch K01, Fast mechanical switch K02, full-control type solid state switching module Q01, full-control type solid state switching module Q02, brilliant lock
Tube module T01, thyristor module T02, arrester MOV01 are identical with the connection type of arrester MOV02.Double divisions electricity
One end of the winding L11 of anti-device L1 and one end of winding L12 are connected in tie point a in parallel, and the other end of winding L11 is connected to
Contact j11, the other end of winding L12 are connected to tie point j12.AC power source and breaker B series connection after be connected to tie point a with
Between ground, load is connected between tie point b and ground, and the dashed box part between tie point a and tie point b constitutes alternating current interruption
Device.
Double split reactor L1, double split reactor L2 and double split reactor L3 have and specific embodiment
Pair identical structure of split reactor L0 and working principle in 1.The Fast mechanical switch K21, Fast mechanical switch K22,
Full-control type solid state switching module Q21, it full-control type solid state switching module Q22, thyristor module T21, thyristor module T22, takes shelter from the thunder
Device MOV21 and arrester MOV22, and, Fast mechanical switch K31, Fast mechanical switch K32, full-control type solid state switching module
Q31, full-control type solid state switching module Q32, thyristor module T31, thyristor module T32, arrester MOV31 and arrester
MOV32 has solid with Fast mechanical switch K01 corresponding in the specific embodiment of the invention 1, Fast mechanical switch K02, full-control type
State switch module Q01, full-control type solid state switching module Q02, thyristor module T01, thyristor module T02, arrester MOV01 and
The identical structure of arrester MOV02 and working principle.
Specific embodiments of the present invention 4 have working principle identical with specific embodiment 1.By increasing double division reactance
Device L1 improves the Breaking capacity for dividing equally degree and breaker of electric current.
Fig. 5 show specific embodiments of the present invention 5.The single phase ac breaker is by friendship described in specific embodiment 1
Thyristor module T01, the thyristor module T02 of stream breaker change Fast mechanical switch S01's and thyristor module T01 into respectively
The tandem compound of tandem compound, Fast mechanical switch S02 and thyristor module T02 can be effectively reduced the resistance to of thyristor module
Pressure request reduces cost.This improvements is equally applicable to other all specific embodiments.The single phase ac breaker
Other parts and structure composition, connection type, the working principle of corresponding part in specific embodiment 1 are all the same.
Working principle, current path when power grid normal steady state is run is identical as specific embodiment 1.
When detecting that short trouble occurs for power grid, immediately to Fast mechanical switch K01, Fast mechanical switch K02, full control
Type solid state switching module Q01 and full-control type solid state switching module Q02 apply shutdown operation, while by electric current fast transfer to brilliant lock
Tube module T01, Fast mechanical switch S01 and thyristor module T02, Fast mechanical switch S02；Hereafter, separating brake Quick mechanical is opened
Close S01, Fast mechanical switch S02；Fast mechanical switch K01 and Fast mechanical switch K02 is under zero current low-voltage operating condition
Separating brake realizes the quick disjunction of no arc；When flowing through the current over-zero of thyristor module T01 and thyristor module T02, thyristor
Module T01 and thyristor module T02 are turned off immediately, while Fast mechanical switch S01, Fast mechanical switch S02 also natural disjunction；
It is kept away if the voltage of Fast mechanical switch S01, thyristor module T01 and Fast mechanical switch S02, thyristor module T02 rise to
Thunder device MOV011, arrester MOV012 and arrester MOV021, arrester MOV022 action value when, route dump energy passes through
Arrester MOV011, arrester MOV012 and arrester MOV021, arrester MOV022 release to zero, are properly completed failure point
It is disconnected.
Fig. 6 show specific embodiments of the present invention 6.The single phase ac breaker is by friendship described in specific embodiment 5
Fast mechanical switch K01, Fast mechanical switch K02, full-control type solid state switching module Q01 and full-control type solid-state are opened in stream breaker
Module Q02 is closed to remove.The structure group of corresponding part in the other parts and specific embodiment 5 of the single phase ac breaker
It is all the same at, connection type, working principle.
When power grid normal steady state is run, Fast mechanical switch S01, Fast mechanical switch S02, thyristor module T01, brilliant lock
Tube module T02 is on state.Power network current access be winding L01, Fast mechanical switch S01, thyristor module T01 and
Winding L02, Fast mechanical switch S02, thyristor module T02.
When detecting that short trouble occurs for power grid, disjunction Fast mechanical switch S01, Fast mechanical switch S02 immediately, together
When close thyristor module T01, thyristor module T02 conducting trigger signal；When flowing through thyristor module T01 and thyristor mould
When the current over-zero of block T02, thyristor module T01 and thyristor module T02 are turned off immediately, while Fast mechanical switch S01, fast
Fast mechanical switch S02 also natural disjunction；If Fast mechanical switch S01, thyristor module T01 and Fast mechanical switch S02, brilliant lock
The voltage of tube module T02 rise to arrester MOV011, arrester MOV012 and arrester MOV021, arrester MOV022 it is dynamic
When work value, route dump energy is let out by arrester MOV011, arrester MOV012 and arrester MOV021, arrester MOV022
It puts, is properly completed failure disjunction.
Above embodiments are provided just for the sake of the description purpose of the present invention, and are not intended to limit the scope of the invention.This
The range of invention is defined by the following claims.It does not depart from spirit and principles of the present invention and the various equivalent replacements made and repairs
Change, should all cover within the scope of the present invention.
Claims (15)
1. a kind of AC circuit breaker, it is characterised in that: including double split reactors and two-way cutoff device；Double division reactance
After one end of two windings of device is connected in parallel, the other end is connected in series with two-way cutoff device respectively；Every road cutoff device knot
Structure is identical and is connected in parallel；Every road cutoff device includes: Fast mechanical switch, full-control type solid state switching module, thyristor module
And arrester；Fast mechanical switch and full-control type solid state switching module be connected in series after respectively with thyristor module, arrester simultaneously
Connection connection；When power grid normal steady state is run, Fast mechanical switch, full-control type solid state switching module are on state, brilliant lock
Tube module is in an off state；Two winding values in double split reactors are small, and electric current is equal, flow direction mutually supports instead
Disappear, power grid normal operation is not influenced；When short trouble occurs for power grid, power network current is increased rapidly, double split reactors
Electric current in two windings is equal；When power grid is detected short trouble, to Fast mechanical switch, full-control type solid-state switch mould
Block applies shutdown operation, while electric current is transferred to thyristor module；Fast mechanical switch is realized without the quick disjunction of arc；When flowing through
When the current over-zero of thyristor module, thyristor module turns off immediately；Route dump energy is released by arrester, is properly completed
Failure disjunction.
2. a kind of AC circuit breaker, it is characterised in that: including AC circuit breaker described in double split reactors and claim 1；Institute
State two windings of double split reactors one end be connected in parallel after, the other end exchange with described in two claims 1 respectively to break
Road device is connected in series；When power grid normal steady state is run, Fast mechanical switch, full-control type solid state switching module are in conducting shape
State, thyristor module are in an off state；Two winding values in double split reactors are small, and electric current is equal, flow direction
It mutually offsets instead, power grid normal operation is not influenced；When short trouble occurs for power grid, power network current is increased rapidly, double divisions
Electric current in two windings of reactor is equal；It is solid to Fast mechanical switch, full-control type when power grid is detected short trouble
State switch module applies shutdown operation, while electric current is transferred to thyristor module；Fast mechanical switch realization quickly divides without arc
It is disconnected；When flowing through the current over-zero of thyristor module, thyristor module turns off immediately；Route dump energy is let out by arrester
It puts, is properly completed failure disjunction.
3. a kind of AC circuit breaker, it is characterised in that: the AC circuit breaker described in several claims 1, which is connected in parallel, to be constituted；
When power grid normal steady state is run, Fast mechanical switch, full-control type solid state switching module are on state, at thyristor module
In off state；Two winding values in double split reactors are small, and electric current is equal, flow direction is mutually offset instead, to electricity
Net, which operates normally, not to be influenced；When short trouble occurs for power grid, power network current is increased rapidly, two windings of double split reactors
In electric current it is equal；When power grid is detected short trouble, Fast mechanical switch, full-control type solid state switching module are applied and closed
Disconnected operation, while electric current is transferred to thyristor module；Fast mechanical switch is realized without the quick disjunction of arc；When flowing through thyristor mould
When the current over-zero of block, thyristor module turns off immediately；Route dump energy is released by arrester, is properly completed failure point
It is disconnected.
4. a kind of AC circuit breaker, it is characterised in that: the AC circuit breaker is linked together by three branch circuit parallel connections and is constituted, and one
Road is that Fast mechanical switch and full-control type solid state switching module are connected in series and constitute；Another way be two of double split reactors around
After one end of group is connected in parallel, the other end concatenates composition with two thyristor modules respectively；Third road is arrester；
When power grid normal steady state is run, Fast mechanical switch and full-control type solid state switching module are on state, two crystalline substances
Brake tube module is in closed state, but because the pressure drop of Fast mechanical switch and full-control type solid state switching module is less than thyristor module
Conduction voltage drop, double split reactors and two thyristor modules do not work, do not influence on power grid normal operation；Power grid hair
When raw short trouble, power network current is increased rapidly, when power grid is detected short trouble, to Fast mechanical switch, full-control type
Solid state switching module applies shutdown operation；Short circuit current is transferred to thyristor module, the electric current phase in winding L11 and winding L12
Deng；Fast mechanical switch is realized without the quick disjunction of arc；When flowing through the current over-zero of thyristor module, thyristor module closes immediately
It is disconnected；Route dump energy is released by arrester, is properly completed failure disjunction.
5. a kind of AC circuit breaker, it is characterised in that: including double split reactors and two-way cutoff device；Double division reactance
After one end of two windings of device is connected in parallel, the other end is connected in series with two-way cutoff device respectively；Every road cutoff device knot
Structure is identical and is connected in parallel；Every road cutoff device is linked together by two branch circuit parallel connections again and is constituted, and is quick by one all the way
Mechanical switch concatenates composition with full-control type solid state switching module；Another way be include: another Fast mechanical switch, a brilliant lock
Tube module and two arresters, another Fast mechanical switch and an arrester and after connecing again with thyristor mould connected with each other
Block and another arrester concatenate；When power grid normal steady state is run, Fast mechanical switch, full-control type solid state switching module are in
On state, thyristor module are in an off state；Two winding values in double split reactors are small, and electric current is equal, magnetic
Lead to contrary and offset, power grid normal operation is not influenced；When power grid is detected short trouble, Quick mechanical is opened
It closes, full-control type solid state switching module applies shutdown operation, while electric current is transferred to thyristor module and another Quick mechanical
Switch；Breaking operation then is applied to another Fast mechanical switch；Fast mechanical switch is realized without the quick disjunction of arc；When flowing through
When the current over-zero of thyristor module, thyristor module turns off immediately, the also natural disjunction of another Fast mechanical switch；Route is surplus
Complementary energy is released by arrester, is properly completed failure disjunction.
6. a kind of AC circuit breaker, it is characterised in that: including double split reactors and two-way cutoff device；Double division reactance
After one end of two windings of device is connected in parallel, the other end is connected in series with two-way cutoff device respectively；Every road cutoff device knot
Structure is identical and is connected in parallel；Every road cutoff device includes: Fast mechanical switch, thyristor module and two arresters；Quick machine
Tool switch with an arrester and after connecing, then with concatenated after thyristor module and the parallel connection of another arrester；Power grid normal steady state
When operation, Fast mechanical switch, thyristor module are on state, and two winding values in double split reactors are small,
And electric current is equal, flow direction is mutually offset instead, does not influence on power grid normal operation；When power grid is detected short trouble
When, separating brake Fast mechanical switch immediately, and close the conducting trigger signal of thyristor module；When the electric current for flowing through thyristor module
When zero passage, thyristor module turns off immediately, while Fast mechanical switch also natural disjunction；Route dump energy is let out by arrester
It puts, is properly completed failure disjunction.
7. according to claim 1-6 it is one of any described in AC circuit breaker, it is characterised in that: in double split reactors
The number of turns of two windings is identical, different name end is connected, flow direction is opposite.
8. according to claim 1-6 it is one of any described in AC circuit breaker, it is characterised in that: the thyristor module is two
The combination of thyristor controlled series compensation reverse parallel connection.
9. according to claim 1-6 it is one of any described in AC circuit breaker, it is characterised in that: the full-control type solid-state switch mould
Block is the combination of two IGBT valve group differential concatenations with anti-paralleled diode, and the IGBT valve group also could alternatively be identical knot
The IGCT valve group of structure.
10. according to claim 1-6 it is one of any described in AC circuit breaker, it is characterised in that: the Fast mechanical switch
Including at least one Fast mechanical switch series component.
11. a kind of breaking method of AC circuit breaker as described in claim 1, which is characterized in that realize are as follows: power grid is normally steady
When state is run, Fast mechanical switch, full-control type solid state switching module are on state, and thyristor module is off shape
State；Two winding values in double split reactors are small, and electric current is equal, flow direction is mutually offset instead, normally transports to power grid
Row does not influence；When short trouble occurs for power grid, power network current is increased rapidly, the electric current in two windings of double split reactors
It is equal；When power grid is detected short trouble, shutdown operation is applied to Fast mechanical switch, full-control type solid state switching module,
Electric current is transferred to thyristor module simultaneously；Fast mechanical switch is realized without the quick disjunction of arc；When the electricity for flowing through thyristor module
When flowing through zero, thyristor module turns off immediately；Route dump energy is released by arrester, is properly completed failure disjunction.
12. a kind of breaking method of AC circuit breaker as claimed in claim 2, which is characterized in that realize are as follows: power grid is normally steady
When state is run, Fast mechanical switch, full-control type solid state switching module are on state, and thyristor module is off shape
State；Two winding values in double split reactors are small, and electric current is equal, flow direction is mutually offset instead, normally transports to power grid
Row does not influence；When short trouble occurs for power grid, power network current is increased rapidly, the electric current in two windings of double split reactors
It is equal；When power grid is detected short trouble, shutdown operation is applied to Fast mechanical switch, full-control type solid state switching module,
Electric current is transferred to thyristor module simultaneously；Fast mechanical switch is realized without the quick disjunction of arc；When the electricity for flowing through thyristor module
When flowing through zero, thyristor module turns off immediately；Route dump energy is released by arrester, is properly completed failure disjunction.
13. a kind of breaking method of AC circuit breaker as claimed in claim 3, which is characterized in that realize are as follows: power grid is normally steady
When state is run, Fast mechanical switch, full-control type solid state switching module are on state, and thyristor module is off shape
State；Two winding values in double split reactors are small, and electric current is equal, flow direction is mutually offset instead, normally transports to power grid
Row does not influence；When short trouble occurs for power grid, power network current is increased rapidly, the electric current in two windings of double split reactors
It is equal；When power grid is detected short trouble, shutdown operation is applied to Fast mechanical switch, full-control type solid state switching module,
Electric current is transferred to thyristor module simultaneously；Fast mechanical switch is realized without the quick disjunction of arc；When the electricity for flowing through thyristor module
When flowing through zero, thyristor module turns off immediately；Route dump energy is released by arrester, is properly completed failure disjunction.
14. a kind of breaking method of AC circuit breaker as claimed in claim 5, which is characterized in that realize are as follows: power grid is normally steady
When state is run, Fast mechanical switch, full-control type solid state switching module are on state, and thyristor module is off shape
State；Two winding values in double split reactors are small, and electric current is equal, flow direction is mutually offset instead, normally transports to power grid
Row does not influence；When power grid is detected short trouble, shutdown is applied to Fast mechanical switch, full-control type solid state switching module
Operation, while electric current is transferred to thyristor module and another Fast mechanical switch；Then to another Fast mechanical switch
Apply breaking operation；Fast mechanical switch is realized without the quick disjunction of arc；When flowing through the current over-zero of thyristor module, thyristor
Module turns off immediately, the also natural disjunction of another Fast mechanical switch；Route dump energy is released by arrester, is properly completed
Failure disjunction.
15. a kind of breaking method of AC circuit breaker as claimed in claim 6, which is characterized in that realize are as follows: power grid is normally steady
When state is run, Fast mechanical switch, thyristor module are on state, two winding values in double split reactors
It is small, and electric current is equal, flow direction is mutually offset instead, does not influence on power grid normal operation；When power grid is detected short-circuit event
When barrier, separating brake Fast mechanical switch immediately, and close the conducting trigger signal of thyristor module；When the electricity for flowing through thyristor module
When flowing through zero, thyristor module turns off immediately, while Fast mechanical switch also natural disjunction；Route dump energy passes through arrester
It releases, is properly completed failure disjunction.
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| CN101183781A (en) * | 2007-12-10 | 2008-05-21 | 华中科技大学 | Shunt inductance current-limiting breaker |
| CN102035196A (en) * | 2010-12-30 | 2011-04-27 | 东南大学 | Thyristor controlled series compensator-based fault current limiting device |
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