CN206412819U - A kind of circuit for starting charging for UPQC - Google Patents
A kind of circuit for starting charging for UPQC Download PDFInfo
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- CN206412819U CN206412819U CN201720103986.4U CN201720103986U CN206412819U CN 206412819 U CN206412819 U CN 206412819U CN 201720103986 U CN201720103986 U CN 201720103986U CN 206412819 U CN206412819 U CN 206412819U
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- transverter
- vsc2
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- electric capacity
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- 238000007600 charging Methods 0.000 title claims abstract description 12
- 238000004146 energy storage Methods 0.000 claims abstract description 18
- 239000003990 capacitor Substances 0.000 claims abstract description 7
- 238000009434 installation Methods 0.000 abstract description 4
- 238000004870 electrical engineering Methods 0.000 abstract description 2
- 238000012856 packing Methods 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
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Abstract
The utility model is related to electrical engineering field, more particularly to a kind of circuit for starting charging for UPQC.Transverter (VSC1 and VSC2), starting switch K1, K2, by-pass switch K3, startup resistance R are controlled entirely including two voltage-typesRise, series transformer T, DC energy storage electric capacity C, DC master row, series side transverter low pass filter reactance L1With filter capacitor C1, parallel inverter LPF reactance L2；The circuit of the present utility model for starting charging for UPQC, charged using transverter VSC2 in side in parallel rectification function for UPQC DC energy storages electric capacity, charging circuit is simplified, UPQC circuit costs is reduced and starts loss, and it is controllable using the achievable DC voltage of parallel connection side transverter VSC2 chargings.Start the AC that resistance is arranged on parallel inverter VSC2, reduce installation difficulty, and improve the packing density of DC bus capacitor, reduce equipment entire area.
Description
Technical field
The utility model is related to electrical engineering field, more particularly to a kind of circuit for starting charging for UPQC.
Background technology
With the development of modern science and technology, on the one hand, the factor of the harm quality of power supply is continuously increased, for example, with electric power
Electronic installation is use, start and stop of various large-scale electric equipments of nonlinear-load of representative etc.；On the other hand, various complexity
, accurate, sensitive to quality of power supply electrical equipment constantly popularize, such as high-performance office equipment, accurate laboratory apparatus, calculate
Machine, communication and data handling system, the automatic control equipment of accurate production process etc., people want to the quality of power supply and reliability
Seek more and more higher.The contradiction of above mentioned problem is more and more protruded, and this causes what power quality problem was caused to power network and distribution system
Directly harm and the loss that may be caused to human lives and production is also increasing, and the quality of the quality of power supply is directly connected to state
The overall benefit of people's economy.
From circuit topology, UPQC (Unified Power Quality Controller) system is a complicated power electronic equipment,
Therefore its startup is also a more complicated process, is related to the foundation for serving as the DC capacitor voltage of dc source role,
Ordering in launching, opportunity of series and parallel compensator etc..
Utility model content
Goal of the invention of the present utility model is to disclose a kind of simplified UPQC start-up circuits, reduces equipment startup separator rate, drop
Low equipment cost and startup are lost, reduction equipment assembly difficulty and equipment overall volume, and improve equipment safety and stability.
In order to solve the above technical problems, the technical solution adopted in the utility model is：
A kind of circuit for starting charging for UPQC, including two voltage-types control transverter (VSC1 and VSC2), startup entirely
Switch K1, K2, by-pass switch K3, startup resistance RRise, series transformer T, DC energy storage electric capacity C, DC master row, the series side change of current
Device low pass filter reactance L1With filter capacitor C1, parallel inverter LPF reactance L2；
The DC energy storage electric capacity C is connected on DC master row by series-parallel form, and DC energy storage electric capacity C two ends are same
When connection series side transverter VSC1 and parallel connection side transverter VSC2；
The by-pass switch K3 and startup resistance RRiseIt is connected to transverter VSC2 in side in parallel AC；
Starting switch K1, K2 is connected to series side transverter VSC1 and parallel connection side transverter VSC2 low pass filtered
Ripple device side；
The series side transverter VSC1 accesses power network by transformer T, and the transverter VSC2 in side in parallel is directly accessed
Power network；
The starting switch K1 is connected on series side transverter VSC1 output low pass filter L1C1Between transformer T；
The starting switch K2 is connected on transverter VSC2 in side in parallel output low pass filter L2Between power network；
The startup resistance RRiseIt is connected to side transverter VSC2 output LPF reactance L in parallel2With starting switch K2It
Between；
The by-pass switch K3 is connected in parallel on startup resistance RRiseOn；
The DC energy storage electric capacity is connected on DC master row by series-parallel form, and DC energy storage electric capacity two ends are simultaneously
Connect series side transverter VSC1 and parallel connection side transverter VSC2.
The beneficial effects of the utility model are shown：
Charged using transverter VSC2 in side in parallel rectification function for UPQC DC energy storages electric capacity, simplify charging circuit,
Reduce UPQC circuit costs and start loss, and it is controllable using the achievable DC voltage of parallel connection side transverter VSC2 chargings.
DC side uses busbar, and the installation of storage capacitor is easily installed compared with direct current cables, and stability is good and more common
It is small that cable/pcb board installs electric capacity stray inductance.
Start the AC that resistance is arranged on parallel inverter VSC2, reduce installation difficulty, and improve DC side
The packing density of electric capacity, reduces equipment entire area.
Starting switch K1, K2 and by-pass switch K3 use contactor, with certain arc extinguishing ability, improve the peace of equipment
Full property and stability.
Brief description of the drawings
Fig. 1 is circuit structure schematic diagram of the present utility model.
Embodiment
The utility model is described in further detail below in conjunction with the accompanying drawings：
Referring to Fig. 1, it is a kind of for UPQC start charging circuit, including two voltage-types control full transverter (VSC1 and
VSC2), starting switch K1, K2, by-pass switch K3, startup resistance RRise, series transformer T, DC energy storage electric capacity C, DC master row,
Series side transverter low pass filter reactance L1With filter capacitor C1, parallel inverter LPF reactance L2。
The DC energy storage electric capacity C is connected on DC master row by series-parallel form, and DC energy storage electric capacity C two ends are same
When connection series side transverter VSC1 and parallel connection side transverter VSC2.
The by-pass switch K3 and startup resistance RRiseIt is connected to transverter VSC2 in side in parallel AC.
Starting switch K1, K2 is connected to series side transverter VSC1 and parallel connection side transverter VSC2 low pass filtered
Ripple device side.
The series side transverter VSC1 accesses power network by transformer T, and the transverter VSC2 in side in parallel is directly accessed
Power network.
The starting switch K1 is connected on series side transverter VSC1 output low pass filter L1C1Between transformer T.
The starting switch K2 is connected on transverter VSC2 in side in parallel output low pass filter L2Between power network.
The startup resistance RRiseIt is connected to side transverter VSC2 output LPF reactance L in parallel2With starting switch K2It
Between.
The by-pass switch K3 is connected in parallel on startup resistance RRiseOn.
The DC energy storage electric capacity is connected on DC master row by series-parallel form, and DC energy storage electric capacity two ends are simultaneously
Connect series side transverter VSC1 and parallel connection side transverter VSC2.
The utility model is not limited to above-described embodiment, and embodiment is exemplary, it is intended to for explaining that this practicality is new
Type, and it is not intended that to limitation of the present utility model.
Claims (1)
1. it is a kind of for UPQC start charging circuit, it is characterised in that including two voltage-types control full transverter (VSC1 and
VSC2), starting switch K1, K2, by-pass switch K3, startup resistance RRise, series transformer T, DC energy storage electric capacity C, DC master row,
Series side transverter low pass filter reactance L1With filter capacitor C1, parallel inverter LPF reactance L2；
The DC energy storage electric capacity C is connected on DC master row by series-parallel form, and DC energy storage electric capacity C two ends connect simultaneously
Meet series side transverter VSC1 and parallel connection side transverter VSC2；
The by-pass switch K3 and startup resistance RRiseIt is connected to transverter VSC2 in side in parallel AC；
Starting switch K1, K2 is connected to series side transverter VSC1 and parallel connection side transverter VSC2 low pass filter
Side；
The series side transverter VSC1 accesses power network by transformer T, and the transverter VSC2 in side in parallel is directly accessed power network；
The starting switch K1 is connected on series side transverter VSC1 output low pass filter L1C1Between transformer T；
The starting switch K2 is connected on transverter VSC2 in side in parallel output low pass filter L2Between power network；
The startup resistance RRiseIt is connected to side transverter VSC2 output LPF reactance L in parallel2With starting switch K2Between；
The by-pass switch K3 is connected in parallel on startup resistance RRiseOn；
The DC energy storage electric capacity is connected on DC master row by series-parallel form, and DC energy storage electric capacity two ends are connected simultaneously
Series side transverter VSC1 and parallel connection side transverter VSC2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720103986.4U CN206412819U (en) | 2017-01-20 | 2017-01-20 | A kind of circuit for starting charging for UPQC |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720103986.4U CN206412819U (en) | 2017-01-20 | 2017-01-20 | A kind of circuit for starting charging for UPQC |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206412819U true CN206412819U (en) | 2017-08-15 |
Family
ID=59557721
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720103986.4U Active CN206412819U (en) | 2017-01-20 | 2017-01-20 | A kind of circuit for starting charging for UPQC |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206412819U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109861266A (en) * | 2019-01-15 | 2019-06-07 | 南京工程学院 | The flexible starting method of the flexible HVDC transmission system of the access containing extensive new energy |
-
2017
- 2017-01-20 CN CN201720103986.4U patent/CN206412819U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109861266A (en) * | 2019-01-15 | 2019-06-07 | 南京工程学院 | The flexible starting method of the flexible HVDC transmission system of the access containing extensive new energy |
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