CN107248750A - A kind of accumulation energy type power governor and distribution system for distribution system - Google Patents
A kind of accumulation energy type power governor and distribution system for distribution system Download PDFInfo
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- CN107248750A CN107248750A CN201710437720.8A CN201710437720A CN107248750A CN 107248750 A CN107248750 A CN 107248750A CN 201710437720 A CN201710437720 A CN 201710437720A CN 107248750 A CN107248750 A CN 107248750A
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- transformer
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- type power
- energy type
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/26—Arrangements for eliminating or reducing asymmetry in polyphase networks
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/18—Arrangements for adjusting, eliminating or compensating reactive power in networks
- H02J3/1821—Arrangements for adjusting, eliminating or compensating reactive power in networks using shunt compensators
- H02J3/1835—Arrangements for adjusting, eliminating or compensating reactive power in networks using shunt compensators with stepless control
- H02J3/1842—Arrangements for adjusting, eliminating or compensating reactive power in networks using shunt compensators with stepless control wherein at least one reactive element is actively controlled by a bridge converter, e.g. active filters
- H02J3/1857—Arrangements for adjusting, eliminating or compensating reactive power in networks using shunt compensators with stepless control wherein at least one reactive element is actively controlled by a bridge converter, e.g. active filters wherein such bridge converter is a multilevel converter
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/28—Arrangements for balancing of the load in a network by storage of energy
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/28—Arrangements for balancing of the load in a network by storage of energy
- H02J3/32—Arrangements for balancing of the load in a network by storage of energy using batteries with converting means
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/062—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for AC powered loads
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M5/00—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
- H02M5/40—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc
- H02M5/42—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters
- H02M5/44—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac
- H02M5/453—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a triode or transistor type requiring continuous application of a control signal
- H02M5/458—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/0067—Converter structures employing plural converter units, other than for parallel operation of the units on a single load
- H02M1/007—Plural converter units in cascade
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/30—Reactive power compensation
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/50—Arrangements for eliminating or reducing asymmetry in polyphase networks
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Inverter Devices (AREA)
Abstract
The invention discloses a kind of accumulation energy type power governor and distribution system for distribution system, accumulation energy type power governor includes the first double winding auto-transformer, the second double winding auto-transformer and accumulation energy type chain type power adjustment unit, the accumulation energy type chain type power adjustment unit is made up of accumulation energy type chain type power adjusting branch road, the first single-phase full bridge AC DC converters, the first two-way DC DC converters that accumulation energy type chain type power adjusting branch route is sequentially connected in series, energy storage device, the second two-way DC DC converters, the second single-phase full bridge DC AC converters are constituted；Distribution system includes distribution transformer and load, and foregoing accumulation energy type power governor is respectively connected between the A phases of distribution transformer low-pressure side, B phases and B phases, C phases.The present invention can balance distribution transformer three-phase current, improve transformer utilization factor, and dynamic compensation load reactive power improves distribution power factor, quickly compensates load active power, improves load supplying reliability.
Description
Technical field
The present invention relates to power system, and in particular to a kind of accumulation energy type power governor and power distribution system for distribution system
System.
Background technology
At present, the distribution AC system of China typically all uses the powered operation mode of three-phase symmetrical.However, actual supplied
The load of band then contains substantial amounts of single-phase load, and there is the phenomenon of three single-phase load unreasonable distributions, so as to cause power distribution system
There is the situation of three-phase load asymmetric operation in system, thus can also produce a series of harmful effect, for example：Reduce three phase transformations
The utilization rate of depressor, adds the power attenuation of transformer and power circuit, causes imbalance of three-phase voltage and has influence on equipment
Normal operation.In addition, to improve power supply reliability, general responsible consumer all employs dual power supply mode.Wherein, it is main
Stand-by power source, to avoid dash current, generally sets certain delay time in handoff procedure, and this is by the power supply to user
Reliability is adversely affected.
The content of the invention
The technical problem to be solved in the present invention：For prior art above mentioned problem there is provided a kind of for distribution system
Accumulation energy type power governor and distribution system, can not only balance distribution transformer three-phase current, and can also realize active and standby electricity
Source keeps the uninterrupted power supply to user in handoff procedure.
In order to solve the above-mentioned technical problem, the technical solution adopted by the present invention is：
On the one hand, as the universal instance with more than two accumulation energy type chain type power adjusting branch roads, the present invention provides a kind of use
In the accumulation energy type power governor of distribution system, including the first double winding auto-transformer, the second double winding auto-transformer with
And accumulation energy type chain type power adjustment unit, the accumulation energy type chain type power adjustment unit is connected to the first double winding self coupling transformation
Between device, the second double winding auto-transformer, the accumulation energy type chain type power adjustment unit is by the accumulation energy type chain type of more than two
Power adjusting branch road joins end to end in chain structure, and it is single-phase that the accumulation energy type chain type power adjusting branch route first be sequentially connected in series
Full-bridge AC-DC converter, the first bidirectional DC-DC converter, energy storage device, the second bidirectional DC-DC converter, the second single-phase full bridge
DC-AC converters are constituted, and the first single-phase full bridge AC-DC converter positioned at first-in-chain(FIC), the first single-phase full bridge AC- positioned at last-of-chain
The corresponding outlet terminal of low pressure winding of the outlet terminal of DC converters and the first double winding auto-transformer is connected, positioned at first-in-chain(FIC)
The second single-phase full bridge DC-AC converters, positioned at last-of-chain the second single-phase full bridge DC-AC converters outlet terminal and second pair
The corresponding outlet terminal of low pressure winding of winding autotransformer is connected, and the first double winding auto-transformer, the second double winding are certainly
The high pressure winding of coupling transformer is output end of the outlet terminal respectively as accumulation energy type power governor, another outlet
Terminal ground.
Preferably, the outlet terminal and the first double winding of the first single-phase full bridge AC-DC converter positioned at first-in-chain(FIC) from
The first single-phase filter inductance is in series between the corresponding outlet terminal of low pressure winding of coupling transformer.
Preferably, the outlet terminal and the second double winding of the second single-phase full bridge DC-AC converters positioned at first-in-chain(FIC) from
The second single-phase filter inductance is in series between the corresponding outlet terminal of low pressure winding of coupling transformer.
Preferably, the energy storage device is ultracapacitor, lithium battery or battery.
Preferably, the first single-phase full bridge AC-DC converter, the first bidirectional DC-DC converter, the second bi-directional DC-DC
Converter, the second single-phase full bridge DC-AC converters are the power inverter based on full control switching device.
Preferably, the full control switching device is insulated gate bipolar translator power tube IGBT, electron injection enhancement gate transistor
One kind in IEGT, integrated gate commutated thyristor IGCT, turn-off thyristor GTO.
On the other hand, as the special case with wall scroll accumulation energy type chain type power adjusting branch road, the present invention also provides a kind of use
In the accumulation energy type power governor of distribution system, including the first double winding auto-transformer, the second double winding auto-transformer with
And accumulation energy type chain type power adjustment unit, the accumulation energy type chain type power adjustment unit is connected to the first double winding self coupling transformation
Between device, the second double winding auto-transformer, the accumulation energy type chain type power adjustment unit is adjusted by an accumulation energy type chain type power
Save branch road to constitute, the accumulation energy type chain type power adjusting branch route the first single-phase full bridge AC-DC converter being sequentially connected in series, first
Bidirectional DC-DC converter, energy storage device, the second bidirectional DC-DC converter, the second single-phase full bridge DC-AC converters are constituted, and institute
State the corresponding outlet of low pressure winding of the outlet terminal and the first double winding auto-transformer of the first single-phase full bridge AC-DC converter
Terminal is connected, the outlet terminal of the second single-phase full bridge DC-AC converters and the low pressure of the second double winding auto-transformer around
The corresponding outlet terminal of group is connected, and the first double winding auto-transformer, the high pressure winding of the second double winding auto-transformer are
One outlet terminal is grounded respectively as the output end of accumulation energy type power governor, another outlet terminal.
Preferably, the outlet terminal of the first single-phase full bridge AC-DC converter and the first double winding auto-transformer
The first single-phase filter inductance is in series between the corresponding outlet terminal of low pressure winding.
Preferably, the outlet terminal of the second single-phase full bridge DC-AC converters and the second double winding auto-transformer
The second single-phase filter inductance is in series between the corresponding outlet terminal of low pressure winding.
On the other hand, the present invention also provides a kind of distribution system, including distribution transformer and load, the distribution transformer
The three-phase line of low-pressure side is connected with load, between the A phases of the three-phase line of the distribution transformer low-pressure side, B phases and B
The accumulation energy type power governor for being previously used for distribution system is respectively connected between phase, C phases.
The present invention has the advantage that for the accumulation energy type power governor tool of distribution system：
1st, the present invention includes the first double winding auto-transformer, the second double winding auto-transformer and accumulation energy type chain type power tune
Unit is saved, accumulation energy type chain type power adjustment unit is joined end to end in chain by the accumulation energy type chain type power adjusting branch road of more than two
Structure, accumulation energy type chain type power adjusting branch route the first single-phase full bridge AC-DC converter being sequentially connected in series, the first bi-directional DC-DC
Converter, energy storage device, the second bidirectional DC-DC converter, the second single-phase full bridge DC-AC converters are constituted, and pass through regulation first
The working condition of single-phase full bridge AC-DC converter, the second single-phase full bridge DC-AC converters, can quickly dynamically compensate for each storage
The reactive power of energy type two output end single-phase loads of power governor, so as to improve the power factor of power distribution network.
The first single-phase full bridge AC-DC converter that 2nd, accumulation energy type chain type power adjusting branch of the invention route is sequentially connected in series,
First bidirectional DC-DC converter, energy storage device, the second bidirectional DC-DC converter, the second single-phase full bridge DC-AC converters are constituted,
By adjusting the first single-phase full bridge AC-DC converter, the working condition of the second single-phase full bridge DC-AC converters, and combine energy storage
Device, can be realized when distribution system main power supply switches, and quick continuous uninterruptible power is provided for important power consumers
Support.
The first single-phase full bridge AC-DC converter that 3rd, accumulation energy type chain type power adjusting branch of the invention route is sequentially connected in series,
First bidirectional DC-DC converter, energy storage device, the second bidirectional DC-DC converter, the second single-phase full bridge DC-AC converters are constituted,
By controlling the working condition of the first bidirectional DC-DC converter, the second bidirectional DC-DC converter, energy storage device can be controlled
Active power is exported, so as to ensure the stabilization of DC bus-bar voltage and the normal fortune of whole accumulation energy type chain type power governor
OK.
The distribution system tool of the present invention has the advantage that：The distribution system of the present invention includes distribution transformer and load, institute
The three-phase line for stating distribution transformer low-pressure side is connected with load, the A phases of the three-phase line of the distribution transformer low-pressure side, B
The present invention is respectively connected between phase and between B phases, C phases is used for the accumulation energy type power governor of distribution system, equally also has
Aforementioned advantages of the present invention for the accumulation energy type power governor of distribution system, and can realize when three-phase load is asymmetric,
The three-phase current that quickly dynamically balance distribution transformer is exported, so as to improve the three-phase voltage degree of balance of power network.
Brief description of the drawings
Fig. 1 is the structural representation of the embodiment of the present invention one.
Fig. 2 is the structural representation of the embodiment of the present invention two.
Marginal data：1st, accumulation energy type power governor；11st, the first double winding auto-transformer；12nd, accumulation energy type chain type power
Adjustment unit；121st, the first single-phase full bridge AC-DC converter；122nd, the first bidirectional DC-DC converter；123rd, energy storage device；
124th, the second bidirectional DC-DC converter；125th, the second single-phase full bridge DC-AC converters；126th, the first single-phase filter inductance；127、
Second single-phase filter inductance；13rd, the second double winding auto-transformer；2nd, distribution transformer；3rd, load.
Embodiment
Embodiment one：
Referring to Fig. 1, the present embodiment be used for distribution system accumulation energy type power governor include the first double winding auto-transformer 11,
Second double winding auto-transformer 13 and accumulation energy type chain type power adjustment unit 12, accumulation energy type chain type power adjustment unit 12 connect
It is connected between the first double winding auto-transformer 11, the second double winding auto-transformer 13, accumulation energy type chain type power adjustment unit
12 are joined end to end in chain structure by the accumulation energy type chain type power adjusting branch road of more than two.
Referring to Fig. 1, accumulation energy type chain type power adjusting branch route be sequentially connected in series the first single-phase full bridge AC-DC converter 121,
First bidirectional DC-DC converter 122, energy storage device 123, the second bidirectional DC-DC converter 124, the second single-phase full bridge DC-AC become
Parallel operation 125 is constituted, and the first single-phase full bridge AC-DC converter 121 positioned at first-in-chain(FIC), the first single-phase full bridge AC- positioned at last-of-chain
The outlet terminal of DC converters 121（eWithf）Outlet terminal corresponding with the low pressure winding of the first double winding auto-transformer 11（c
Withd）It is connected, the second single-phase full bridge DC-AC converters 125 positioned at first-in-chain(FIC), the second single-phase full bridge DC-AC conversion positioned at last-of-chain
The outlet terminal of device 125（qWithr）Outlet terminal corresponding with the low pressure winding of the second double winding auto-transformer 13（sWitht）Phase
Even, the first double winding auto-transformer 11, the high pressure winding of the second double winding auto-transformer 13 are an outlet terminal point
Not as the output end of accumulation energy type power governor（aWithu）, another outlet terminal ground connection（bWithv）.
The accumulation energy type power governor that the present embodiment is used for distribution system can play raising transformer utilization factor, and dynamic is mended
Load reactive power is repaid, distribution power factor is improved, load active power is quickly compensated, load supplying reliability etc. is improved and makees
With.
It should be noted that with N in the present embodiment（N≥3）Accumulation energy type chain type power adjusting branch road more than bar is shown
Example property explanation, certainly, the quantity of accumulation energy type chain type power adjusting branch road can also use one or two as needed, its
Principle is identical with the present embodiment, therefore its quantity N can extend to N >=1.
Referring to Fig. 1, in the present embodiment DC port g1~gN of the first single-phase full bridge AC-DC converter 121 respectively with it is right
The high pressure winding h1 of the first bidirectional DC-DC converter 122~hN answered is connected, the low pressure winding of the first bidirectional DC-DC converter 122
I1~iN is connected with a port j1~jN of energy storage device 123 respectively, another port k1~kN difference of energy storage device 123
It is connected with low pressure winding l1~lN of the second bidirectional DC-DC converter 124, the high pressure winding of the second bidirectional DC-DC converter 124
O1~oN is connected with DC port p1~pN of corresponding second single-phase full bridge DC-AC converters 125 respectively.
Referring to Fig. 1, by taking first accumulation energy type chain type power adjusting branch road as an example：First single-phase full bridge AC-DC converter 121
One outlet terminal of ACeOutlet terminal corresponding with the low pressure winding of the first double winding auto-transformer 11cIt is connected, separately
First single-phase full bridge AC-DC converter 121 of one outlet terminal then with Article 2 accumulation energy type chain type power adjusting branch road is exchanged
The outlet terminal series connection of side, is finally converted by the first single-phase full bridge AC-DC of the N articles accumulation energy type chain type power adjusting branch road
The outlet terminal of the AC of device 121fConnect the corresponding outlet terminal of low pressure winding of the first double winding auto-transformer 11d；The
The direct current side ports of one single-phase full bridge AC-DC converter 121g1 and first bidirectional DC-DC converter 122 high pressure winding h1 phases
Even, the low pressure winding i1 of the first bidirectional DC-DC converter 122 is connected with a port j1 of energy storage device 123, energy storage device
123 another port k1 is connected with the low pressure winding l1 of the second bidirectional DC-DC converter 124, the second bidirectional DC-DC converter
124 high pressure winding o1 is connected with the DC port p1 of the second single-phase full bridge DC-AC converters 125, the second single-phase full bridge DC-AC
One outlet terminal of the AC of converter 125qOutlet corresponding with the low pressure winding of the second double winding auto-transformer 13
TerminalsIt is connected, second single-phase full bridge DC-AC of another outlet terminal then with Article 2 accumulation energy type chain type power adjusting branch road becomes
The outlet terminal series connection of the AC of parallel operation 125, it is finally single-phase complete by the second of the N articles accumulation energy type chain type power adjusting branch road
The outlet terminal of the AC of bridge DC-AC converters 125rConnect the second double winding auto-transformer 13 low pressure winding it is corresponding go out
Line terminalst。
Referring to Fig. 1, positioned at the outlet terminal of the first single-phase full bridge AC-DC converter 121 of first-in-chain(FIC)eWith the first double winding certainly
The corresponding outlet terminal of low pressure winding of coupling transformer 11cBetween be in series with the first single-phase filter inductance 126.
Referring to Fig. 1, positioned at the outlet terminal of the second single-phase full bridge DC-AC converters 125 of first-in-chain(FIC)qWith the second double winding certainly
The corresponding outlet terminal of low pressure winding of coupling transformer 13sBetween be in series with the second single-phase filter inductance 127.
In the present embodiment, energy storage device 123 is ultracapacitor, lithium battery or battery.
In the present embodiment, the first single-phase full bridge AC-DC converter 121, the first bidirectional DC-DC converter 122, second are two-way
DC-DC converter 124, the second single-phase full bridge DC-AC converters 125 are the power inverter based on full control switching device.
In the present embodiment, full control switching device is insulated gate bipolar translator power tube IGBT, electron injection enhancement gate transistor
One kind in IEGT, integrated gate commutated thyristor IGCT, turn-off thyristor GTO.
The accumulation energy type power governor that the present embodiment is used for distribution system can play balance distribution transformer three-phase current,
Transformer utilization factor is improved, dynamic compensation load reactive power improves distribution power factor, quickly compensates load active power,
Improve the effect such as load supplying reliability
As shown in figure 1, the distribution system of the present embodiment includes distribution transformer 2 and load 3, the three of the low-pressure side of distribution transformer 2
Phase line 3 is connected with load, connects between the A phases of the three-phase line of the low-pressure side of distribution transformer 2, B phases and between B phases, C phases
Being connected to the present embodiment is used for the accumulation energy type power governor 1 of distribution system.By the first single-phase full bridge AC-DC for controlling A phases side
The working condition of converter 121, the working condition of the second single-phase full bridge AC-DC converter 125 of B phases side, the first list of B phases side
The working condition of the working condition of phase full-bridge AC-DC converter 121, the second single-phase full bridge AC-DC converter 125 of C phases side, energy
Enough realize when three-phase load is asymmetric, the three-phase current that quickly dynamically balance distribution transformer is exported, so as to improve power network
The three-phase voltage degree of balance, can play raising transformer utilization factor, dynamic compensation load reactive power, improve distribution power because
Number, quickly compensates load active power, improves the effect such as load supplying reliability.
It is connected between accumulation energy type power governor 1#1, B phase, C phases and connects between A phases, B phases referring to Fig. 1, in the present embodiment
It is connected to accumulation energy type power governor 1#2, accumulation energy type power governor 1#1 identical with accumulation energy type power governor 1#2 structures,
Therefore accumulation energy type power governor 1#2 structure is had been omitted from Fig. 1 as space is limited,.
Embodiment two：
The present embodiment and embodiment one are essentially identical, its main difference for accumulation energy type chain type power adjusting branch road quantity not
Together.
As shown in Fig. 2 the present embodiment is used for the accumulation energy type power governor of distribution system, including the first double winding self coupling becomes
Depressor 11, the second double winding auto-transformer 13 and accumulation energy type chain type power adjustment unit 12, accumulation energy type chain type power adjusting
Unit 12 is connected between the first double winding auto-transformer 11, the second double winding auto-transformer 13, accumulation energy type chain type power
Adjustment unit 12 is made up of an accumulation energy type chain type power adjusting branch road, and accumulation energy type chain type power adjusting branch route is sequentially connected in series
First single-phase full bridge AC-DC converter 121, the first bidirectional DC-DC converter 122, energy storage device 123, the second bi-directional DC-DC become
Parallel operation 124, the second single-phase full bridge DC-AC converters 125 are constituted, and the outlet terminal of the first single-phase full bridge AC-DC converter 121
It is connected with the corresponding outlet terminal of low pressure winding of the first double winding auto-transformer 11, the second single-phase full bridge DC-AC converters
The corresponding outlet terminal of low pressure winding of 125 outlet terminal and the second double winding auto-transformer 13 is connected, the first double winding
Auto-transformer 11, the high pressure winding of the second double winding auto-transformer 13 are an outlet terminal respectively as accumulation energy type work(
The output end of rate adjuster, another outlet terminal ground connection.
Referring to Fig. 2, an outlet terminal of the AC of the first single-phase full bridge AC-DC converter 121eWith the first double winding certainly
The corresponding outlet terminal of low pressure winding of coupling transformer 11cConnected, another outlet terminalfConnect the first double winding self coupling transformation
The corresponding outlet terminal of low pressure winding of device 11d；The direct current side ports of first single-phase full bridge AC-DC converter 121g1 and first
The high pressure winding h1 of bidirectional DC-DC converter 122 is connected, and low pressure winding i1 and the energy storage of the first bidirectional DC-DC converter 122 are filled
The a port j1 for putting 123 is connected, the low pressure of another port k1 of energy storage device 123 and the second bidirectional DC-DC converter 124
Winding l1 is connected, and the high pressure winding o1 of the second bidirectional DC-DC converter 124 is straight with the second single-phase full bridge DC-AC converters 125
Flow port p1 is connected, an outlet terminal of the AC of the second single-phase full bridge DC-AC converters 125qWith the second double winding certainly
The corresponding outlet terminal of low pressure winding of coupling transformer 13sConnected, another outlet terminalrConnect the second double winding self coupling transformation
The corresponding outlet terminal of low pressure winding of device 13t。
In the present embodiment, the outlet terminal of the first single-phase full bridge AC-DC converter 121 and the first double winding auto-transformer
The first single-phase filter inductance 126 is in series between the 11 corresponding outlet terminal of low pressure winding.
In the present embodiment, the outlet terminal and the second double winding auto-transformer of the second single-phase full bridge DC-AC converters 125
The second single-phase filter inductance 127 is in series between the 13 corresponding outlet terminal of low pressure winding.
Described above is only the preferred embodiment of the present invention, and protection scope of the present invention is not limited merely to above-mentioned implementation
Example, all technical schemes belonged under thinking of the present invention belong to protection scope of the present invention.It should be pointed out that for the art
Those of ordinary skill for, some improvements and modifications without departing from the principles of the present invention, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (10)
1. a kind of accumulation energy type power governor for distribution system, it is characterised in that：Including the first double winding auto-transformer
（11）, the second double winding auto-transformer（13）And accumulation energy type chain type power adjustment unit（12）, the accumulation energy type chain type work(
Rate adjustment unit（12）It is connected to the first double winding auto-transformer（11）, the second double winding auto-transformer（13）Between, institute
State accumulation energy type chain type power adjustment unit（12）Joined end to end by the accumulation energy type chain type power adjusting branch road of more than two in chain
Structure, the first single-phase full bridge AC-DC converter that the accumulation energy type chain type power adjusting branch route is sequentially connected in series（121）, first
Bidirectional DC-DC converter（122）, energy storage device（123）, the second bidirectional DC-DC converter（124）, the second single-phase full bridge DC-AC
Converter（125）Constitute, and positioned at the first single-phase full bridge AC-DC converter of first-in-chain(FIC)（121）, positioned at the first single-phase complete of last-of-chain
Bridge AC-DC converter（121）Outlet terminal and the first double winding auto-transformer（11）The corresponding leading-out terminal of low pressure winding
Son is connected, positioned at the second single-phase full bridge DC-AC converters of first-in-chain(FIC)（125）, positioned at last-of-chain the second single-phase full bridge DC-AC convert
Device（125）Outlet terminal and the second double winding auto-transformer（13）The corresponding outlet terminal of low pressure winding be connected, first
Double winding auto-transformer（11）, the second double winding auto-transformer（13）High pressure winding be that an outlet terminal is made respectively
It is grounded for the output end of accumulation energy type power governor, another outlet terminal.
2. the accumulation energy type power governor according to claim 1 for distribution system, it is characterised in that：It is described to be located at chain
The first first single-phase full bridge AC-DC converter（121）Outlet terminal and the first double winding auto-transformer（11）Low pressure around
The first single-phase filter inductance is in series between the corresponding outlet terminal of group（126）.
3. the accumulation energy type power governor according to claim 1 for distribution system, it is characterised in that：It is described to be located at chain
The second first single-phase full bridge DC-AC converters（125）Outlet terminal and the second double winding auto-transformer（13）Low pressure around
The second single-phase filter inductance is in series between the corresponding outlet terminal of group（127）.
4. the accumulation energy type power governor according to claim 1 for distribution system, it is characterised in that：The energy storage dress
Put（123）For ultracapacitor, lithium battery or battery.
5. the accumulation energy type power governor according to claim 1 for distribution system, it is characterised in that：Described first is single
Phase full-bridge AC-DC converter（121）, the first bidirectional DC-DC converter（122）, the second bidirectional DC-DC converter（124）, second
Single-phase full bridge DC-AC converters（125）It is the power inverter based on full control switching device.
6. the accumulation energy type power governor according to claim 5 for distribution system, it is characterised in that：The full control is opened
Pass device is insulated gate bipolar translator power tube IGBT, electron injection enhancement gate transistor IEGT, integrated gate commutated thyristor
One kind in IGCT, turn-off thyristor GTO.
7. a kind of accumulation energy type power governor for distribution system, it is characterised in that：Including the first double winding auto-transformer
（11）, the second double winding auto-transformer（13）And accumulation energy type chain type power adjustment unit（12）, the accumulation energy type chain type work(
Rate adjustment unit（12）It is connected to the first double winding auto-transformer（11）, the second double winding auto-transformer（13）Between, institute
State accumulation energy type chain type power adjustment unit（12）It is made up of an accumulation energy type chain type power adjusting branch road, the accumulation energy type chain type work(
The first single-phase full bridge AC-DC converter that rate regulation branch route is sequentially connected in series（121）, the first bidirectional DC-DC converter（122）,
Energy storage device（123）, the second bidirectional DC-DC converter（124）, the second single-phase full bridge DC-AC converters（125）Constitute, and institute
State the first single-phase full bridge AC-DC converter（121）Outlet terminal and the first double winding auto-transformer（11）Low pressure winding
Corresponding outlet terminal is connected, the second single-phase full bridge DC-AC converters（125）Outlet terminal and the second double winding self coupling
Transformer（13）The corresponding outlet terminal of low pressure winding be connected, the first double winding auto-transformer（11）, the second double winding from
Coupling transformer（13）High pressure winding be an outlet terminal respectively as accumulation energy type power governor output end, another
Outlet terminal is grounded.
8. the accumulation energy type power governor according to claim 7 for distribution system, it is characterised in that：Described first is single
Phase full-bridge AC-DC converter（121）Outlet terminal and the first double winding auto-transformer（11）Low pressure winding it is corresponding go out
The first single-phase filter inductance is in series between line terminals（126）.
9. the accumulation energy type power governor according to claim 7 for distribution system, it is characterised in that：Described second is single
Phase full-bridge DC-AC converters（125）Outlet terminal and the second double winding auto-transformer（13）Low pressure winding it is corresponding go out
The second single-phase filter inductance is in series between line terminals（127）.
10. a kind of distribution system, including distribution transformer（2）And load（3）, the distribution transformer（2）The three-phase of low-pressure side
Circuit and load（3）It is connected, it is characterised in that：The distribution transformer（2）Between the A phases of the three-phase line of low-pressure side, B phases with
And the accumulation energy type power adjusting for distribution system any one described in is respectively connected with claim 1~9 between B phases, C phases
Device（1）.
Priority Applications (1)
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| CN201710437720.8A CN107248750A (en) | 2017-06-12 | 2017-06-12 | A kind of accumulation energy type power governor and distribution system for distribution system |
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| CN201710437720.8A CN107248750A (en) | 2017-06-12 | 2017-06-12 | A kind of accumulation energy type power governor and distribution system for distribution system |
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| CN109888912A (en) * | 2019-03-18 | 2019-06-14 | 中国石油大学(华东) | Based on the uneven backup power source for handing over straight exchange list/phase to phase fault and its application |
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