CN106208079A - A kind of band D.C. resistance and the active power regulator control system of branch resistance - Google Patents
A kind of band D.C. resistance and the active power regulator control system of branch resistance Download PDFInfo
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- CN106208079A CN106208079A CN201610808252.6A CN201610808252A CN106208079A CN 106208079 A CN106208079 A CN 106208079A CN 201610808252 A CN201610808252 A CN 201610808252A CN 106208079 A CN106208079 A CN 106208079A
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- resistance
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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
- H02J3/04—Circuit arrangements for ac mains or ac distribution networks for connecting networks of the same frequency but supplied from different sources
- H02J3/06—Controlling transfer of power between connected networks; Controlling sharing of load between connected networks
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Abstract
The invention discloses the active power regulator control system of a kind of band D.C. resistance and branch resistance, including AC power controllable and AC power natural contral unit.AC power natural contral unit, including the switch being arranged between ac bus and branch's ac bus；AC power controllable includes commutator, D.C. resistance and inversion branch units, and inversion branch units includes branch resistance, inverter.The natural trend that native system utilizes AC power controllable and AC power natural contral unit to realize electric energy carries the most standby with active power regulation.When AC power natural contral unit isolated operation and control, distribution line, according to the size output of circuit and load impedance, forms natural power；When AC power controllable isolated operation, employing is determined electric current, is determined voltage and determine the control method of power, can control the size of low-voltage electricity transmission line output, forms controlled power.
Description
Technical field
The present invention relates to technical field of electric power, the active power particularly relating to a kind of band D.C. resistance and branch resistance is adjusted
Ore-controlling Role.
Background technology
In the high pressure such as tradition 110kV, 220kV, 500kV and ultrahigh-voltage alternating-current transmission system, transmission line of electricity is opened and is cut
Except generally individually being manipulated by AC circuit breaker 100, as shown in Figure 1.Fig. 1 is the structure of transmission of electricity regulator control system of the prior art
Figure.Transmission line of electricity output is distributed by natural trend, and is determined by line impedance, load parameter.Pass through mechanical type
AC circuit breaker 100 be difficult to Transmission Lines power is controlled in real time.
In modern power systems, use alternating current-direct current mixing technology of transmission of electricity.Direct current transportation principle is to first pass through fairing
Alternating current is become unidirectional current, through hundreds of kilometer or the transmission of electricity of more long transmission line, then becomes handing over by unidirectional current by inverter
Stream electricity.Although which solves the shortcoming of tradition transmission system, but may need in one case in actual applications
The power transmission mode that power is controlled, but it is controlled to need not power in another case, it can be seen that, this transmission of electricity control methods merit
Can be single, and when any one hardware device in regulator control system damages, cause whole transmission system to occur therefore normal, reliably
Property is relatively low.
As can be seen here, the reliability how improving the single shortcoming of power transmission mode and raising regulator control system is this area skill
Art personnel's problem demanding prompt solution.
Summary of the invention
It is an object of the invention to provide the active power regulator control system of a kind of band D.C. resistance and branch resistance, be used for improving
Shortcoming that power transmission mode is single and improve the reliability of regulator control system.
For solving above-mentioned technical problem, the present invention provides the active power of a kind of band D.C. resistance and branch resistance to regulate and control system
System, including AC power controllable and AC power natural contral unit；Described AC power natural contral unit, including setting
It is placed in the switch between ac bus and branch's ac bus；Described AC power controllable includes commutator, D.C. resistance
With inversion branch units, described inversion branch units includes branch resistance, inverter, the first end of described commutator and described friendship
Stream bus connect, the second end of described commutator is connected with the first end of described D.C. resistance, the 3rd end of described commutator and
The three-terminal link of described inverter, the second end of described D.C. resistance is connected with dc bus, the first of described branch resistance
End is connected with described dc bus, and the second end of described branch resistance is connected with the first end of described inverter, described inverter
The second end be connected with described branch ac bus；
Wherein, described branch ac bus is connected with low-voltage electricity transmission line.
Preferably, when the number of described low-voltage electricity transmission line is more than 1, the inverse variation in described AC power controllable
The number of Zhi Danyuan and the number of described switch are identical with the number of described low-voltage electricity transmission line, and the quantity of described commutator
It it is 1 with the quantity of described D.C. resistance.
Preferably, described commutator is full-bridge rectifier.
Preferably, described commutator is silicon controlled rectifier.
Preferably, described inverter is full-bridge inverter.
Preferably, described inverter is sinewave inverter.
Preferably, described switch is knife switch.
Preferably, described switch is automatically to switch.
Preferably, described switch is AC circuit breaker.
Band D.C. resistance provided by the present invention and the active power regulator control system of branch resistance, by entering regulator control system
Row innovative design, is carried in ac bus and low voltage transmission line by the AC power controllable of band D.C. resistance and branch resistance
Between road, AC power controllable and AC power natural contral unit is utilized to realize the natural trend conveying of electric energy with meritorious
Power adjustments is the most standby.When AC power natural contral unit isolated operation and control, distribution line is according to circuit and bears
The size output of lotus impedance, forms natural power；When AC power controllable isolated operation, employing is determined electric current, is determined
Voltage and the control method determining power, can control the size of low-voltage electricity transmission line output, forms controlled power.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention, the accompanying drawing used required in embodiment will be done simply below
Introduce, it should be apparent that, the accompanying drawing in describing below is only some embodiments of the present invention, for ordinary skill people
From the point of view of Yuan, on the premise of not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the structure chart of transmission of electricity regulator control system of the prior art；
A kind of band D.C. resistance that Fig. 2 provides for the embodiment of the present invention and the knot of the active power regulator control system of branch resistance
Composition；
Fig. 3 is equivalent circuit diagram corresponding to a kind of AC power controllable that the present invention provides；
Reference is as follows:
AC circuit breaker 100, AC power controllable 200, AC power natural contral unit 300, ac bus 1,
Branch's ac bus 6, switch 7, commutator 2, D.C. resistance 3, branch resistance 4, inverter 5, dc bus 8, low voltage transmission line
Road 10.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Describe, it is clear that described embodiment is only a part of embodiment of the present invention rather than whole embodiment wholely.Based on this
Embodiment in invention, those of ordinary skill in the art are not under making creative work premise, and obtained is every other
Embodiment, broadly falls into scope.
The core of the present invention is to provide the active power regulator control system of a kind of band D.C. resistance and branch resistance.
In order to make those skilled in the art be more fully understood that the present invention program, below in conjunction with the accompanying drawings and detailed description of the invention
The present invention is described in further detail.
A kind of band D.C. resistance that Fig. 2 provides for the embodiment of the present invention and the knot of the active power regulator control system of branch resistance
Composition.As in figure 2 it is shown, the active power regulator control system of band D.C. resistance and branch resistance, including AC power controllable 200
With AC power natural contral unit 300；AC power natural contral unit 300, including being arranged at ac bus 1 and branch's friendship
Switch 7 between stream bus 6；AC power controllable 200 includes commutator 2, D.C. resistance 3 and inversion branch units, inverse
Becoming branch units and include branch resistance 4, inverter 5, the first end of commutator 2 is connected with ac bus 1, the second of commutator 2
End is connected with the first end of D.C. resistance 3, the 3rd end of commutator 2 and the three-terminal link of inverter 5, the of D.C. resistance 3
Two ends are connected with dc bus 8, and the first end of branch resistance 4 is connected with dc bus 8, the second end of branch resistance 4 and inversion
First end of device 5 connects, and the second end of inverter 5 is connected with branch ac bus 6；
Wherein, branch's ac bus 6 is connected with low-voltage electricity transmission line 10.
It should be noted that AC power in AC power controllable 200 controlled refer to can control exchange
The meaning of power output, the AC power natural contral in AC power natural contral unit 300 refers to cannot control to hand over
The meaning of stream power output.AC power controllable 200 and AC power natural contral unit 300 in the present invention are one
Plant title, in order to distinguish, there is no other restriction implication.
In order to allow those skilled in the art more understand how the regulator control system in the present invention regulates and controls, friendship given below
The calculating process of the electrical energy parameter in the low-voltage electricity transmission line of stream power controllable 200 correspondence.
AC power controllable 200 in Fig. 2 is carried out simplification and obtains Fig. 3.A kind of exchange that Fig. 3 provides for the present invention
The equivalent circuit diagram that power controllable is corresponding.
In the direct current component that Fig. 3 simplifies, commutator 2, inverter 5 DC side DC voltage and DC current are respectively
For:
Edr=K0Ercosα-RrId (1)
Edi=K0(Eicosβ+XL)+(Ri+RL)Id (2)
R=RD+R1//R2//R3//…//Rm (4)
Wherein, K0For the coefficient determined by the mode of connection of commutating circuit, Rr、RiIt is respectively commutator 2, the damage of inverter 5
The resistance that consumption is corresponding, R is the resistance of D.C. resistance 3, IDFor DC current, Edr、EdiIt is respectively commutator 2, inverter 5 DC side
DC voltage, Er、EiBe respectively commutator 2, the alternating voltage root-mean-square valve of inverter 5 AC, α, β be respectively commutator 2,
The Trigger Angle of inverter 5, RiAnd RLIt is respectively resistance and the reactance of low-voltage electricity transmission line 10.
In the AC power controllable 200 corresponding with every low-voltage electricity transmission line 10 the 1st, 2 ..., i ..., m bar divide
The DC current propped up is respectively as follows:
Each low-voltage electricity transmission line 10 is by equipment band D.C. resistance and a plurality of low-voltage circuit wattful power of branch resistance
Rate regulator control system is adjusted, it is possible to achieve AC power controllable 200 and AC power natural contral unit 300 exchange fortune
OK, the most standby.Direct current component through " commutation inversion " process, utilizes direct current transportation principle to realize right in the shortest distance
The manual control of 380V low-voltage electricity transmission line output, it is achieved the real-time control of AC transmission system active power.
From formula (5) to (8) it can be seen that every low-voltage electricity transmission line 10 is transported AC power controllable 200 controls
It is about to affect total D.C. resistance, and then affects total DC current that commutator 2 exports, every low-voltage electricity transmission line of final impact
The DC current of 10 i.e. power.It is to say, each low-voltage electricity transmission line 10 is transported under AC power controllable 200 controls
Row is interactional, it is necessary to coordinate control, it is achieved stable power output.
When low-voltage electricity transmission line 10 runs under the control of AC power natural contral unit 300, the most directly obtain friendship
The electric energy of stream bus 1, it is impossible to carry out power control.
The band D.C. resistance of the present embodiment offer and the active power regulator control system of branch resistance, by entering regulator control system
Row innovative design, is carried in ac bus and low voltage transmission line by the AC power controllable of band D.C. resistance and branch resistance
Between road, AC power controllable and AC power natural contral unit is utilized to realize the natural trend conveying of electric energy with meritorious
Power adjustments is the most standby.When AC power natural contral unit isolated operation and control, distribution line is according to circuit and bears
The size output of lotus impedance, forms natural power；When AC power controllable isolated operation, employing is determined electric current, is determined
Voltage and the control method determining power, can control the size of low-voltage electricity transmission line output, forms controlled power.
It is understood that Fig. 2 is a kind of concrete application scenarios, AC power controllable 200 and AC power
The determination of the number of natural contral unit 300 needs to select according to practical situation.
As one preferred embodiment, when the number of low-voltage electricity transmission line 10 is more than 1, AC power controllable
The number of the inversion branch units in 200 and the number of switch 7 are identical with the number of low-voltage electricity transmission line 10, and commutator 2
Quantity and the quantity of D.C. resistance 3 be 1.
It is understood that in the above case said, the quantity of commutator 2 and the quantity of D.C. resistance 3 it can also be provided that
Multiple so that low-voltage electricity transmission line one_to_one corresponding, but, it is contemplated that the problems such as power consumption, commutator here 2 selects one.
It addition, D.C. resistance 3 can play the effect of current limliting.
As preferred embodiment, commutator 2 is full-bridge rectifier.It is understood that commutator 2 can be multiple
Type such as, in addition to the full-bridge rectifier in bridge rectifier, it is also possible to be half bridge rectifier.
As preferred embodiment, commutator 2 is silicon controlled rectifier.It is understood that commutator 2 can be many
Type such as, in addition to silicon controlled rectifier, it is also possible to be diode rectifier.It is contemplated that practical application, this
Invention uses silicon controlled rectifier.
As preferred embodiment, inverter 5 is full-bridge inverter.It is understood that inverter 5 is except being full-bridge
Half-bridge inverter, merely just a kind of specific embodiment is can also is that outside inverter.
As preferred embodiment, inverter 5 is sinewave inverter.The output signal of sinewave inverter can be straight
Connect the wireless conversion of use.
As preferred embodiment, switch 7 is knife switch.
As preferred embodiment, switch 7 is automatically to switch.Automatically switch can also infrequently switch on and off electricity
Road and control motor across-the-line starting.Therefore, switch is the disconnected conjunction electrical equipment with link of protection that low-voltage circuit is conventional automatically.
As preferred embodiment, switch 7 is AC circuit breaker.
It is understood that the effect of switch 7 is the break-make realizing the signal of telecommunication, therefore, the form of switch 7 has a variety of,
It is not limited to above-mentioned implementation.
Above the active power regulator control system of band D.C. resistance provided by the present invention and branch resistance is carried out in detail
Introduce.In description, each embodiment uses the mode gone forward one by one to describe, and what each embodiment stressed is to implement with other
The difference of example, between each embodiment, identical similar portion sees mutually.For device disclosed in embodiment,
Owing to it corresponds to the method disclosed in Example, so describe is fairly simple, relevant part sees the explanation of method part i.e.
Can.It should be pointed out that, for those skilled in the art, under the premise without departing from the principles of the invention, also may be used
So that the present invention is carried out some improvement and modification, these improve and modify in the protection domain also falling into the claims in the present invention.
Professional further appreciates that, in conjunction with the unit of each example that the embodiments described herein describes
And algorithm steps, it is possible to electronic hardware, computer software or the two be implemented in combination in, in order to clearly demonstrate hardware and
The interchangeability of software, the most generally describes composition and the step of each example according to function.These
Function performs with hardware or software mode actually, depends on application-specific and the design constraint of technical scheme.Specialty
Technical staff specifically should can be used for using different methods to realize described function to each, but this realization should not
Think beyond the scope of this invention.
The method described in conjunction with the embodiments described herein or the step of algorithm can direct hardware, processor be held
The software module of row, or the combination of the two implements.Software module can be placed in random access memory (RAM), internal memory, read-only deposit
Reservoir (ROM), electrically programmable ROM, electrically erasable ROM, depositor, hard disk, moveable magnetic disc, CD-ROM or technology
In any other form of storage medium well known in field.
Claims (9)
1. a band D.C. resistance and the active power regulator control system of branch resistance, it is characterised in that include that AC power is controlled
Unit and AC power natural contral unit；Described AC power natural contral unit, including being arranged at ac bus and branch
Switch between ac bus；Described AC power controllable includes commutator, D.C. resistance and inversion branch units, described
Inversion branch units includes branch resistance, inverter, and the first end of described commutator is connected with described ac bus, described rectification
Second end of device is connected with the first end of described D.C. resistance, and the 3rd end of described commutator connects with the 3rd end of described inverter
Connecing, the second end of described D.C. resistance is connected with dc bus, and the first end of described branch resistance is connected with described dc bus,
Second end of described branch resistance is connected with the first end of described inverter, and the second end of described inverter exchanges with described branch
Bus connects；
Wherein, described branch ac bus is connected with low-voltage electricity transmission line.
Band D.C. resistance the most according to claim 1 and the active power regulator control system of branch resistance, it is characterised in that when
When the number of described low-voltage electricity transmission line is more than 1, the number of the inversion branch units in described AC power controllable and
The number of described switch is identical with the number of described low-voltage electricity transmission line, and the quantity of described commutator and described D.C. resistance
Quantity is 1.
Band D.C. resistance the most according to claim 1 and the active power regulator control system of branch resistance, it is characterised in that institute
Stating commutator is full-bridge rectifier.
Band D.C. resistance the most according to claim 1 and the active power regulator control system of branch resistance, it is characterised in that institute
Stating commutator is silicon controlled rectifier.
Band D.C. resistance the most according to claim 1 and the active power regulator control system of branch resistance, it is characterised in that institute
Stating inverter is full-bridge inverter.
Band D.C. resistance the most according to claim 1 and the active power regulator control system of branch resistance, it is characterised in that institute
Stating inverter is sinewave inverter.
Band D.C. resistance the most according to claim 1 and the active power regulator control system of branch resistance, it is characterised in that institute
Stating switch is knife switch.
Band D.C. resistance the most according to claim 1 and the active power regulator control system of branch resistance, it is characterised in that institute
State switch for switch automatically.
Band D.C. resistance the most according to claim 1 and the active power regulator control system of branch resistance, it is characterised in that institute
Stating switch is AC circuit breaker.
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| CN201610808252.6A CN106208079A (en) | 2016-09-07 | 2016-09-07 | A kind of band D.C. resistance and the active power regulator control system of branch resistance |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107147134A (en) * | 2017-07-14 | 2017-09-08 | 广东工业大学 | A kind of low-voltage circuit active power regulator control system with D.C. resistance |
| CN107181285A (en) * | 2017-07-14 | 2017-09-19 | 广东工业大学 | A kind of a plurality of low-voltage circuit active power regulator control system with branch resistance |
| CN107181286A (en) * | 2017-07-14 | 2017-09-19 | 广东工业大学 | A kind of super-pressure active power method of adjustment and device |
| CN107196350A (en) * | 2017-07-14 | 2017-09-22 | 广东工业大学 | A kind of active power real-time control apparatus with controlled series resistance |
| CN107204619A (en) * | 2017-07-14 | 2017-09-26 | 广东工业大学 | A kind of low-voltage circuit active power regulator control system with D.C. resistance and branch resistance |
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| US20130197704A1 (en) * | 2012-02-01 | 2013-08-01 | Abb Research Ltd | Dc connection scheme for windfarm with internal mvdc collection grid |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107147134A (en) * | 2017-07-14 | 2017-09-08 | 广东工业大学 | A kind of low-voltage circuit active power regulator control system with D.C. resistance |
| CN107181285A (en) * | 2017-07-14 | 2017-09-19 | 广东工业大学 | A kind of a plurality of low-voltage circuit active power regulator control system with branch resistance |
| CN107181286A (en) * | 2017-07-14 | 2017-09-19 | 广东工业大学 | A kind of super-pressure active power method of adjustment and device |
| CN107196350A (en) * | 2017-07-14 | 2017-09-22 | 广东工业大学 | A kind of active power real-time control apparatus with controlled series resistance |
| CN107204619A (en) * | 2017-07-14 | 2017-09-26 | 广东工业大学 | A kind of low-voltage circuit active power regulator control system with D.C. resistance and branch resistance |
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