CN205484507U - Many thyristors series connection voltage -sharing detection circuitry - Google Patents
Many thyristors series connection voltage -sharing detection circuitry Download PDFInfo
- Publication number
- CN205484507U CN205484507U CN201620168715.2U CN201620168715U CN205484507U CN 205484507 U CN205484507 U CN 205484507U CN 201620168715 U CN201620168715 U CN 201620168715U CN 205484507 U CN205484507 U CN 205484507U
- Authority
- CN
- China
- Prior art keywords
- voltage
- igct
- plate
- cpu
- series
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Testing Of Individual Semiconductor Devices (AREA)
Abstract
The utility model relates to a many thyristors series connection voltage -sharing detection circuitry, its characterized in that all installs a TE pick -up plate in every thyristor department of series connection, and the back is connected with voltage -sharing series resistance to the TE pick -up plate, and is parallelly connected with the thyristor, every TE pick -up plate all be connected with CPU through photoelectric switching circuit, transmit the voltage peak on the thyristor that detects to CPU with the mode of light signal, CPU judges the information of a plurality of TE pick -up plates of received and uploads with the trouble. The advantage is: the circuit is simple reliable, adopts simple circuit to realize to the detection of thyristor voltage, reduce the device, utilized the equalizing resistance of establishing ties to get the ability, saved the sampling resistor on the TE board, reduce device grade and device quantity, practiced thrift manufacturing cost, having reduced the complexity of equipment, having improved the interference immunity of equipment, the operation of messenger's equipment is more reliable.
Description
Technical field
This utility model relates to a kind of many IGCTs series average-voltage testing circuit, is applied to electric power, metallurgical nuclear fusion power supply and institute
There is the field using many Thyristors in series.
Background technology
Forward and reverse repetitive peak voltage of high-power thyristor can only accomplish about 6kV, in the occasion that high voltage uses, and single
The voltage of IGCT cannot meet when requiring, it is necessary to many Thyristors in series are to reach the magnitude of voltage of demand.When many brilliant locks
During pipe series connection, need to take current-sharing measure to be substantially evenly distributed with the voltage on every IGCT of guarantee, thus ensure every crystalline substance
Brake tube will not puncture because of overtension.If certain thyristor voltage too low even zero of series connection, other brilliant lock can be made
The voltage that pipe is born raises.If have many IGCTs occur brownout or be zero situation, will result in other brilliant lock
Pipe punctures because of overtension.Therefore when certain IGCT occur brownout or be zero situation time, detect this in time
The state of kind also takes counter-measure extremely important to the safety of equipment, and can position is which IGCT this situation occurs simultaneously,
Process to fault is very convenient.
How to detect and above-mentioned all press fault, the common practices in industry is as follows:
Equalizing resistance and voltage detecting circuit are installed in IGCT two ends, use testing circuit to examine IGCT both end voltage
Survey, with chip, this fault and other fault are synthesized, time faulty, send feedback pulse signal response.This kind of method electricity
Road is complicated, and fault rate is high, and cost is the most of a relatively high, and the signal of return may comprise various faults, needs investigation further
Just it is capable of determining whether all to press fault.
Summary of the invention
The purpose of this utility model is to provide a kind of New Polycrystalline brake tube series average-voltage testing circuit, and this circuit uses self-energizing side
Formula, and connect with static voltage sharing, saving the high-power divider resistance on plate, signal response uses fiber-optic signal, energy
Detect in many Thyristors in series that certain IGCT bears the fault of low voltage.
For achieving the above object, this utility model is achieved through the following technical solutions:
A kind of many IGCTs series average-voltage testing circuit, it is characterised in that be respectively mounted one at every the IGCT being connected in series
Block TE detects plate, after TE detection plate is connected in series with equalizing resistance, in parallel with IGCT；Described each TE detection plate is equal
Be connected with CPU by photoelectric switching circuit, the voltage peak on IGCT that will detect transmit in the way of optical signal to
The information of the multiple TE received detection plate is carried out judging and fault upload by CPU, CPU.
Compared with prior art, the beneficial effects of the utility model are:
1. circuit is simple and reliable, and the detection to thyristor voltage uses ball bearing made to realize.
2. decrease device, utilize the equalizing resistance of series connection to take energy, eliminate the sample resistance on TE plate.
3. decrease device scale and number of devices, save production cost.
4. reduce the complexity of equipment, improve the anti-interference of equipment, make equipment run relatively reliable.
Accompanying drawing explanation
Fig. 1 is that many Thyristors in series all press testing circuit functional block diagram.
Fig. 2 is that many Thyristors in series all press testing circuit schematic diagram.
Detailed description of the invention
Below in conjunction with the accompanying drawings detailed description of the invention of the present utility model is described in further detail.
See Fig. 1, Fig. 2, a kind of many IGCTs series average-voltage testing circuit, be respectively mounted at every the IGCT being connected in series
One piece of TE detects plate, after TE detection plate is connected in series with equalizing resistance, in parallel with IGCT；Described each TE detects plate
All being connected with CPU by photoelectric switching circuit, the voltage peak on IGCT that will detect transmits in the way of optical signal
Carry out judging and fault upload to CPU, CPU by the information of the multiple TE received detection plate.
When many Thyristors in series use, because the internal resistance of every IGCT is different, the IGCT of series connection can be made to bear
Voltage is the biggest, it is therefore desirable to an equalizing resistance in parallel at every IGCT two ends, so that the electricity that every IGCT is born
Press basically identical.This utility model is installed one piece of TE at every IGCT of series connection and is detected plate, TE detection plate and equalizing resistance
Being installed in series, the electric current all pushing back road flows through equalizing resistance and TE detection plate.The voltage born when IGCT two ends and TE
Electric current on plate is directly proportional, and the electric current on TE detection plate raises along with the voltage at IGCT two ends and increases, when TE detects plate
On electric current when reaching a certain value, it will drive fiber optic transmitter to send optical signal.Set potentiometer on every block of TE detection plate to enter
Row fine setting, to ensure that every block of TE plate drives the concordance of electric current, thus ensures the concordance of the action current of every IGCT.
The CPU of VE plate receives every block of TE detection plate and transmits the optical signal of coming, it is achieved in breakdown judge, fault locking and fault
Pass.Because the voltage that the IGCT of series connection is born has a process from low to high, the parameter in every IGCT loop and TE
The parameter of detection plate has certain dispersibility, after the optical signal that therefore every block of TE detection plate sends when normal has before having,
VE plate wants can normally judge whether be fault.And fault locking location can be realized, total failare is uploaded by hard contact, therefore
Barrier is located through communication and uploads.
Experiment proves: a kind of many IGCTs series average-voltage testing circuit of this utility model, and circuit design is reasonable, simple and reliable,
Hi-lo circuit can be effectively isolated in high pressure uses, utilization obtains good result.
Claims (1)
1. IGCT series average-voltage testing circuit more than a kind, it is characterised in that all pacify at every the IGCT being connected in series
Fill one piece of TE and detect plate, after TE detection plate is connected in series with equalizing resistance, in parallel with IGCT；Described each TE detection
Plate is all connected with CPU by photoelectric switching circuit, and the voltage peak on IGCT that will detect passes in the way of optical signal
Transport to CPU, CPU carry out judging and fault upload by the information of the multiple TE received detection plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620168715.2U CN205484507U (en) | 2016-03-07 | 2016-03-07 | Many thyristors series connection voltage -sharing detection circuitry |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620168715.2U CN205484507U (en) | 2016-03-07 | 2016-03-07 | Many thyristors series connection voltage -sharing detection circuitry |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205484507U true CN205484507U (en) | 2016-08-17 |
Family
ID=56659404
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620168715.2U Active CN205484507U (en) | 2016-03-07 | 2016-03-07 | Many thyristors series connection voltage -sharing detection circuitry |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205484507U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109444620A (en) * | 2019-01-02 | 2019-03-08 | 国家电网有限公司 | DC converter valve intelligence partial pressure compensation detection system |
| CN113358994A (en) * | 2021-05-18 | 2021-09-07 | 中国南方电网有限责任公司超高压输电公司贵阳局 | Thyristor test device and method |
| CN113514749A (en) * | 2021-07-07 | 2021-10-19 | 中国南方电网有限责任公司超高压输电公司贵阳局 | Thyristor voltage-sharing detection device and detection method |
-
2016
- 2016-03-07 CN CN201620168715.2U patent/CN205484507U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109444620A (en) * | 2019-01-02 | 2019-03-08 | 国家电网有限公司 | DC converter valve intelligence partial pressure compensation detection system |
| CN113358994A (en) * | 2021-05-18 | 2021-09-07 | 中国南方电网有限责任公司超高压输电公司贵阳局 | Thyristor test device and method |
| CN113514749A (en) * | 2021-07-07 | 2021-10-19 | 中国南方电网有限责任公司超高压输电公司贵阳局 | Thyristor voltage-sharing detection device and detection method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107202947B (en) | A kind of efficient thyristor valves component test system and test method | |
| CN103244447B (en) | Accurately detect failure detector circuit and the method for ac fan operation conditions | |
| CN205484507U (en) | Many thyristors series connection voltage -sharing detection circuitry | |
| CN104638729B (en) | Parallel connection type photovoltaic charger fault management system and method | |
| CN101408581B (en) | Cable wire break detection alarming device | |
| CN203178354U (en) | Three-phase AC electronic quantities detection circuit suitable for one-chip microcomputer | |
| CN201255757Y (en) | Electric cable break detecting alarm | |
| CN208588798U (en) | A kind of high voltage direct current converter valve thyristor overpressure resistance detecting device | |
| CN114690109A (en) | Testing device and testing method for thyristor voltage monitoring unit of converter valve | |
| CN105652107B (en) | A kind of reliability checking method of direct-current transmission converter valve triggering monitoring unit | |
| CN203465391U (en) | High-voltage thyristor fault detection device without optical fiber isolation | |
| CN103308755A (en) | Insulation testing device and method for high-voltage direct-current remote power supply system | |
| CN202929127U (en) | Circuit for detecting three-phase electricity phase sequence and open phase | |
| CN107765118A (en) | A kind of test device and method of light-operated converter valve recovery protection firing unit | |
| CN103884444A (en) | Remote monitoring type photovoltaic junction box based on thermistor temperature measurement and RFID transmission | |
| CN103412231A (en) | Distribution short circuit self checking device and method thereof | |
| CN204649821U (en) | A kind of testing circuit of power collection systems | |
| CN105304346B (en) | A kind of super capacitor monitoring system based on CAN bus communication | |
| CN204882778U (en) | Supply network leakage detection device | |
| CN103279057B (en) | Analog acquisition passage protects circuit and analog collection system | |
| CN201828640U (en) | Direct-detecting intelligent apparatus for diagnosing insulation and status of direct-current (DC) system | |
| CN202678932U (en) | Three-phase solid-state relay with missing phase-preventing function | |
| CN203827277U (en) | Remote monitoring type photovoltaic junction box based on semiconductor temperature measurement and RFID transmission | |
| CN203827278U (en) | Remote monitoring type photovoltaic junction box based on measuring current and power wire carrier | |
| CN103888062A (en) | Remote monitor type photovoltaic connecting box based on current detection and electric wire carrier waves |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 518000 2401K Building, 24th Floor, Coastal Ring Qing Building, No. 24 Futian Street, Futian Street, Futian Town, Shenzhen City, Guangdong Province Patentee after: Shenzhen Rongke Hengyang Rectifier Technology Co., Ltd. Address before: No. 108 Science and Technology Road, Anshan High-tech Zone, Liaoning Province, 114000 Patentee before: Beijing Rongke Hengyang Rectification Technology Co., Ltd. |