CN208767799U - Dynamic SVG module and storage capacitor mixed type three-phase imbalance governing system - Google Patents
Dynamic SVG module and storage capacitor mixed type three-phase imbalance governing system Download PDFInfo
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- CN208767799U CN208767799U CN201821782198.3U CN201821782198U CN208767799U CN 208767799 U CN208767799 U CN 208767799U CN 201821782198 U CN201821782198 U CN 201821782198U CN 208767799 U CN208767799 U CN 208767799U
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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
- Y02E40/10—Flexible AC transmission systems [FACTS]
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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
- Y02E40/50—Arrangements for eliminating or reducing asymmetry in polyphase networks
Abstract
The utility model relates to a kind of dynamic SVG modules and storage capacitor mixed type three-phase imbalance governing system, including dynamic SVG module and compensating electric capacity, compensating electric capacity is connected in parallel on three-phase bus, and dynamic SVG module includes detection module, IGBT drive module, control module, storage capacitor and inverter module；Inverter module is connected in parallel on three-phase bus, and storage capacitor is in parallel with inverter module；Control module is used for the voltage of analysis detection module acquisition, current data, generates control instruction, and comprehensively control inverter module and compensating electric capacity cooperate.The utility model conventional SVG module combines configuration with storage capacitor, in the case where three-phase imbalance occurs in bus-bar system, priority acccess control compensating electric capacity compensates current bus-bar system three-phase inductive reactive power, after compensating electric capacity control action, control module controls inverter module and the energy that storage capacitor stores is issued compensation electric current by inversion circuit and is injected in bus-bar system low-load phase, realizes fine-tuning for three-phase imbalance.
Description
Technical field
The utility model relates to control of power supply system technical field more particularly to a kind of dynamic SVG module and storage capacitors
Mixed type three-phase imbalance governing system.
Background technique
The presence of the higher a kind of problem of the frequency of occurrences in Operation of Electric Systems when three-phase imbalance, three-phase imbalance increases
The electric energy loss of route, reduces the power output of distribution transformer, influences the safe operation of electrical equipment, for these problems,
With the continuous development of the three-phase imbalance control of low-voltage network, currently, the improvement of three-phase imbalance has caused electricity
Power department more and more pays close attention to and payes attention to, and has also emerged many solutions administered for radio area three-phase imbalance, mesh
Preceding main solution has phase-change switch formula and SVG formula.Phase-change switch formula advantage is can to solve platform from load-side to become three-phase
Imbalance problem, loss is smaller, but installation workload is relatively large, and because its distribution can be to for radio area the characteristics of installation
Increase additional fault point；Its compensation precision of SVG formula is higher, may be implemented to fine-tune, be easily installed, but its loss is higher,
And become outlet side because its installation site is located at platform, the three-phase imbalance problem that platform becomes output end can be solved perfectly, but cannot be real
The balance of existing load-side, it is limited to the effect for improving line loss.
Summary of the invention
The technical problem to be solved by the utility model is to provide a kind of dynamic SVG easy for installation and high compensation precision
Module and storage capacitor mixed type three-phase imbalance governing system.
In order to solve the above technical problems, the technical solution of the utility model is: dynamic SVG module and storage capacitor mixed type
Three-phase imbalance governing system, including dynamic SVG module and compensating electric capacity, the compensating electric capacity, which is connected in parallel on, becomes output end company with platform
On the three-phase bus connect, the compensating electric capacity is three-phase separate-supplement formula capacitor, for being compensated to bus-bar system inductive reactive power, institute
Stating dynamic SVG module includes detection module, IGBT drive module, control module, storage capacitor and inverter module；The inversion mould
Block is connected in parallel on the three-phase bus, under the control of control module, out-of-balance current being converted into inhaling for bus-bar system
The alternation of receipts compensates electric current；The storage capacitor is in parallel with the inverter module, for storing for inverter module conversion
Energy；The control module is used for the voltage of analysis detection module acquisition, current data, and generates control instruction, comprehensively control
Inverter module and compensating electric capacity cooperate, and carry out three-phase imbalance improvement.
As an improvement the detection module includes No. three voltage transformers and No. three current transformers, for acquiring
Bus-bar system three-phase voltage, current data.
As an improvement the control module includes ARM Series MCU, the detection module and IGBT drive module are equal
It is electrically connected with the control module.
As an improvement the quantity of the storage capacitor is multiple, the multiple energy storage capacitor in series.
By adopting the above-described technical solution, the beneficial effects of the utility model are: the utility model is by conventional SVG module
Configuration is combined with storage capacitor, priority acccess control compensating electric capacity is to current bus in the case where three-phase imbalance occurs in bus-bar system
System three-phase inductive reactive power compensates, and after compensating electric capacity control action, control module controls inverter module for energy storage
The energy of capacitor storage issues compensation electric current by inversion circuit and injects in bus-bar system low-load phase, realizes three-phase imbalance
Fine-tune.
Detailed description of the invention
The present invention will be further described with reference to the accompanying drawings and examples.
Fig. 1 is the main circuit schematic diagram of the utility model embodiment；
Fig. 2 is the functional block diagram of SVG module in the utility model embodiment.
Specific embodiment
As Fig. 1 and Fig. 2 jointly shown in, dynamic SVG module and storage capacitor mixed type three-phase imbalance governing system, including
Dynamic SVG module and compensating electric capacity, compensating electric capacity is connected in parallel on to be become on the three-phase bus that output end is connect with platform, and compensating electric capacity is three
Phase divides benefit formula capacitor, and for compensating to bus-bar system inductive reactive power, dynamic SVG module includes detection module, IGBT driving
Module, control module, storage capacitor and inverter module.
Inverter module is connected in parallel on three-phase bus, under the control of control module, out-of-balance current being converted into supplying
The alternation that bus-bar system absorbs compensates electric current.
Storage capacitor is in parallel with inverter module, for storing the energy for inverter module conversion.Preferably, storage capacitor
Quantity is multiple, multiple energy storage capacitor in series.
Control module is used for the voltage of analysis detection module acquisition, current data, and generates control instruction, and comprehensively control is inverse
Become module and compensating electric capacity cooperates, carry out three-phase imbalance improvement, it is preferred that control module includes ARM Series MCU, inspection
It surveys module and IGBT drive module is electrically connected with control module.
Detection module include No. three voltage transformers and No. three current transformers, for acquire bus-bar system three-phase voltage,
Current data.
Working example:
As shown in Figure 1, bus-bar system A, B, C threephase load electric current is respectively as follows: 5A, 10A, 15A, the three-phase electricity of bus-bar system
Outflow has showed imbalance, and A, B, C three-phase current answer all 10A when three-phase current is in equilibrium state.When detection module detects
When to three-phase imbalance situation, control module controls the IGBT movement of IGBT drive module driving C phase, and the alternating current of C phase is whole
Stream is that direct current is stored in storage capacitor later, then the IGBT movement of control module control A phase, by storage capacitor (A, B, C
The public same group of storage capacitor of three-phase) on direct current carry out inversion, be then released into bus-bar system A phase, make A, B, C three-phase
The all 10A of electric current, principle are exactly by certain mutually extra electric current storage into the storage capacitor of SVG module, then from storage
Energy capacitor takes out certain phase that current compensation is compensated to needs.
The basic principles and main features of the present invention and the advantages of the present invention have been shown and described above.Current row
The technical staff of industry it should be appreciated that the present utility model is not limited to the above embodiments, do not depart from the spirit of the present invention and
Under the premise of range, the utility model also has various changes and improvements, these changes and improvements both fall within claimed
Within the scope of utility model.The protection scope of the present invention is defined by the appended claims and their equivalents.
Claims (4)
1. dynamic SVG module and storage capacitor mixed type three-phase imbalance governing system, including dynamic SVG module and compensation electricity
Hold, the compensating electric capacity is connected in parallel on to be become on the three-phase bus that output end is connect with platform, and the compensating electric capacity is three-phase separate-supplement formula electricity
Hold, for being compensated to bus-bar system inductive reactive power, it is characterised in that: the dynamic SVG module includes detection module, IGBT
Drive module, control module, storage capacitor and inverter module；The inverter module is connected in parallel on the three-phase bus, is used for
Under the control of control module, the alternation that out-of-balance current is converted into absorbing for bus-bar system is compensated into electric current；The storage capacitor
It is in parallel with the inverter module, for storing the energy for inverter module conversion；The control module is used for analysis detection
The voltage of module acquisition, current data, and control instruction is generated, comprehensively control inverter module and compensating electric capacity cooperate, into
Row three-phase imbalance is administered.
2. dynamic SVG module as described in claim 1 and storage capacitor mixed type three-phase imbalance governing system, feature exist
In: the detection module includes No. three voltage transformers and No. three current transformers, for acquiring bus-bar system three-phase voltage, electricity
Flow data.
3. dynamic SVG module as described in claim 1 and storage capacitor mixed type three-phase imbalance governing system, feature exist
In: the control module includes ARM Series MCU, and the detection module and IGBT drive module are electrically connected with the control module
It connects.
4. dynamic SVG module as described in claim 1 and storage capacitor mixed type three-phase imbalance governing system, feature exist
In: the quantity of the storage capacitor is multiple, the multiple energy storage capacitor in series.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821782198.3U CN208767799U (en) | 2018-10-31 | 2018-10-31 | Dynamic SVG module and storage capacitor mixed type three-phase imbalance governing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821782198.3U CN208767799U (en) | 2018-10-31 | 2018-10-31 | Dynamic SVG module and storage capacitor mixed type three-phase imbalance governing system |
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| CN208767799U true CN208767799U (en) | 2019-04-19 |
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| CN201821782198.3U Active CN208767799U (en) | 2018-10-31 | 2018-10-31 | Dynamic SVG module and storage capacitor mixed type three-phase imbalance governing system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110323766A (en) * | 2019-07-19 | 2019-10-11 | 云南电网有限责任公司电力科学研究院 | A kind of low-voltage network imbalance of three-phase voltage governing system and method |
-
2018
- 2018-10-31 CN CN201821782198.3U patent/CN208767799U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110323766A (en) * | 2019-07-19 | 2019-10-11 | 云南电网有限责任公司电力科学研究院 | A kind of low-voltage network imbalance of three-phase voltage governing system and method |
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