CN205231756U - High pressure TSC valves with fault protection function - Google Patents
High pressure TSC valves with fault protection function Download PDFInfo
- Publication number
- CN205231756U CN205231756U CN201521110427.3U CN201521110427U CN205231756U CN 205231756 U CN205231756 U CN 205231756U CN 201521110427 U CN201521110427 U CN 201521110427U CN 205231756 U CN205231756 U CN 205231756U
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- CN
- China
- Prior art keywords
- valve group
- unit
- thyristor
- punching
- voltage
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- Expired - Fee Related
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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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- Power Conversion In General (AREA)
Abstract
The utility model provides a high pressure TSC valves with fault protection function, includes valves the control unit and three thyristor valve group, control of valves control panel and three thyristor valve group link, thyristor valve group including RC voltage -sharing unit, modular thyristor unit, the high frequency current source, the synchronous trigger impulse transformer of magnetic ring punching, pulse rectifier circuit, high frequency and high voltage keeps apart power supply unit and synchronous voltage detecting and fault detection unit, RC voltage -sharing unit and pulse rectifier circuit are connected with modular thyristor unit respectively, high frequency current source adoption second punching cable passes through the punching mode and is connected with synchronous trigger impulse transformer, high frequency and high voltage isolation power supply unit passes through the punching mode with synchronous voltage detecting and the first punching cable of fault detection unit adoption and is connected, synchronous voltage detecting and fault detection unit transfer valves the control unit with control signal through optic fibre. This device simple structure, interference immunity is strong, and the reliability is high.
Description
Technical field
The utility model relates to a kind of high pressure TSC valve group with failure protection function.
Background technology
Thyristor switchable capacitor (TSC) is widely used in height, the dynamic reactive power compensation equipment of low-voltage distribution system, along with the development of power electronic technology and Computer Control Technology, various novel automatic, fast reactive power compensating device occurs in succession, thyristor controlled series compensation belongs to noncontacting switch, operation lifetime is almost unlimited, and the switching moment of thyristor can accurately control, without impacting ground, capacitor can be accessed electrical network fast, greatly reducing impact during switching, the sudden change of impact load can be followed the tracks of fast, keep optimum power factor at any time, realize dynamic reactive power compensation, reduce voltage fluctuation, improve the quality of power supply, saves energy.
At present, the trigger board energy of most of TSC device takes from the current transformer on busbar, when thyristor not conducting, energy is got by the precharge of RC resistance-capacitance absorption electric capacity, when after turn on thyristors, electrogenesis stream in circuit, current energy-taking is carried out by instrument transformer, namely getting of trigger board can be that voltage and current gets energy hybrid mode, and this mode brings very large inconvenience to installment and debugging, and the structure of valve group is also very complicated simultaneously.
In addition the detection Hall element of most of TSC device synchronizing voltage and zero crossing realizes, and error is very large with drift, and error protection cannot realize, and debugging of dispatching from the factory is quite loaded down with trivial details and apparatus expensive with field adjustable.
Summary of the invention
The purpose of this utility model is to provide a kind of high pressure TSC valve group with failure protection function, is applied in the reactive power compensation device of distribution system.
For achieving the above object, the utility model is achieved through the following technical solutions: a kind of high pressure TSC valve group with failure protection function, comprise valve group control unit and three thyristor controlled series compensation, valve group control board controls to be connected with three thyristor controlled series compensation, described thyristor controlled series compensation comprises RC pressure unit, modular thyristor cell, source of high frequency current, the synchronous trigger impulse transformer of magnet ring punching, impulse commutation circuit, high-frequency and high-voltage isolation electric supply installation and synchronizing voltage detect and fault detection unit, RC pressure unit is connected with modular thyristor cell respectively with impulse commutation circuit, source of high frequency current adopts the second punching cable to be connected with synchronous trigger impulse transformer by punching mode, high-frequency and high-voltage isolation electric supply installation detects with synchronizing voltage and fault detection unit adopts the first punching cable to be connected by punching mode, synchronizing voltage detects and control signal is passed to valve group control unit by optical fiber by fault detection unit, and valve group control unit is completed by optical fiber control source of high frequency current and triggers the synchronization zero-cross of modular thyristor cell.
The beneficial effects of the utility model and advantage are:
The utility model can adapt to different loads, detects and adopts externally fed with triggering link, and stable and reliable for performance, key link is exempted to regulate, and it is very convenient to produce with debugging.Accuracy of detection of the present utility model is relevant with the precision of device used, within can accomplishing 20us, is equivalent to 0.36 degree by commonplace components.During input, impulse current is very little.The utility model adopts the pulse transformer of source of high frequency current magnet ring punching mode to realize synchronous triggering, the thyristor synchronizing voltage detection of isolation supply power mode and fault detection unit is adopted to judge zero crossing by working in primary side, and detect thyristor state at any time, signal optical fiber is reached valve group control unit, realize compensating fast, therefore this apparatus structure is simple, and strong interference immunity, reliability is high.
Accompanying drawing explanation
Fig. 1 is the utility model electrical block diagram.
Fig. 2 is the utility model delta connection schematic diagram.
Fig. 3 is the utility model star-star connection schematic diagram.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described.
Embodiment 1
As shown in Figure 1, a kind of high pressure TSC valve group with failure protection function, comprises valve group control unit and three thyristor controlled series compensation, and three thyristor controlled series compensation are connected in a set of high pressure TSC equipment for quick-switching capacitor; Capacitive load can adopt triangular form connected mode, also Y-connection can be adopted, but adjust the progression of thyristor, each thyristor controlled series compensation layered arrangement, every layer comprises four RC pressure units 1, four modular thyristor cell 2, source of high frequency current 3, the synchronous trigger impulse transformer 4 of magnet ring punching, four impulse commutation circuit 5, a high-frequency and high-voltage isolation electric supply installation 6, two synchronizing voltages detect and fault detection unit 7, RC pressure unit 1 is connected with modular thyristor cell 2 respectively with impulse commutation circuit 5; Source of high frequency current 3 adopts the second punching cable 10 to be connected with synchronous trigger impulse transformer 4 by punching mode; High-frequency and high-voltage isolation electric supply installation 6 detects with synchronizing voltage and fault detection unit 7 adopts the first punching cable 9 to be connected by punching mode; Synchronizing voltage detects and control signal is passed to valve group control unit 8 by optical fiber by fault detection unit 7, and the latter is completed by optical fiber control source of high frequency current 3 and triggers the synchronization zero-cross of modular thyristor cell 2.
Wherein each modular thyristor cell 2 is made up of two thyristor inverse parallels, configure corresponding RC pressure unit 1 and impulse commutation plate 5, every two modular thyristor cell 2 configure a synchronizing voltage and detect and fault detection unit 7, isolate electric supply installation 6 by corresponding high-frequency and high-voltage and power supply is provided, control four modular thyristor cell of every layer, thyristor controlled series compensation provides trigger energy by source of high frequency current 3 is unified.Difference according to operating voltage can select the different numbers of plies, forms corresponding valve group.As the modular thyristor using withstand voltage 1.8kV, five layers of such device just to form the star welding system worked under 10kV.One piece of valve group control board 8 controls three thyristor controlled series compensation of the present embodiment, and the low voltage control that it is installed on cabinet is indoor, by optical fiber transmission signal control valve group, effectively can improve antijamming capability.
Synchronizing voltage detects and fault detection unit 7 is powered by high-frequency and high-voltage isolation electric supply installation, detection signal reaches valve group control board 8 by optical fiber, once have thyristor to damage in valve group, valve group control board 8 can block the concurrent alarm signal that is out of order of (three-phase) valve group fast, expands further to avoid fault.This device each several part major parameter is made by design and test, does not establish adjusting device, therefore can remove field adjustable link from.This device has the function avoiding misoperation simultaneously, and this function is realized by valve group control board.
Embodiment 2
As Figure 2-3, the present embodiment has further illustrating of the high pressure TSC valve group of failure protection function to a kind of described in embodiment 1, and in present embodiment, three identical thyristor controlled series compensation are connected in a set of TSC equipment, for switched capacitor.Fig. 2 is delta connection, and triangular form connection can only use three single-phase reactors, and cost is relatively high; Fig. 3 is star connection, and star connection can use the reactor of a three-phase, advantage of lower cost.This thyristor controlled series compensation can select modular thyristor specification and quantity flexibly according to the difference of load connection, and during relative triangular form connection wye connection, the withstand voltage surplus of thyristor controlled series compensation can reduce
doubly, realize by the progression reducing modular thyristor, electric current surplus must increase simultaneously
doubly.
In Fig. 2, one piece of valve group control board 8 controls three thyristor controlled series compensation of the present utility model, and the low voltage control that it is installed on cabinet is indoor, by optical fiber transmission signal control valve group, effectively can improve antijamming capability.
Claims (1)
1. one kind has the high pressure TSC valve group of failure protection function, comprise valve group control unit and three thyristor controlled series compensation, valve group control board controls to be connected with three thyristor controlled series compensation, it is characterized in that: described thyristor controlled series compensation comprises RC pressure unit, modular thyristor cell, source of high frequency current, the synchronous trigger impulse transformer of magnet ring punching, impulse commutation circuit, high-frequency and high-voltage isolation electric supply installation and synchronizing voltage detect and fault detection unit, and RC pressure unit is connected with modular thyristor cell respectively with impulse commutation circuit; Source of high frequency current adopts the second punching cable to be connected with synchronous trigger impulse transformer by punching mode; High-frequency and high-voltage isolation electric supply installation detects with synchronizing voltage and fault detection unit adopts the first punching cable to be connected by punching mode; Synchronizing voltage detects and control signal is passed to valve group control unit by optical fiber by fault detection unit, and valve group control unit is completed by optical fiber control source of high frequency current and triggers the synchronization zero-cross of modular thyristor cell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521110427.3U CN205231756U (en) | 2015-12-29 | 2015-12-29 | High pressure TSC valves with fault protection function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521110427.3U CN205231756U (en) | 2015-12-29 | 2015-12-29 | High pressure TSC valves with fault protection function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205231756U true CN205231756U (en) | 2016-05-11 |
Family
ID=55906801
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521110427.3U Expired - Fee Related CN205231756U (en) | 2015-12-29 | 2015-12-29 | High pressure TSC valves with fault protection function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205231756U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107482646A (en) * | 2017-09-11 | 2017-12-15 | 辽宁荣信兴业电力技术有限公司 | TSC device based on electromagnetic triggering and triggering method |
-
2015
- 2015-12-29 CN CN201521110427.3U patent/CN205231756U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107482646A (en) * | 2017-09-11 | 2017-12-15 | 辽宁荣信兴业电力技术有限公司 | TSC device based on electromagnetic triggering and triggering method |
| CN107482646B (en) * | 2017-09-11 | 2024-03-08 | 辽宁荣信兴业智能电气有限公司 | TSC device based on electromagnetic triggering and triggering method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160511 Termination date: 20191229 |