CN112366701B - Parallel connection method of static switch - Google Patents
Parallel connection method of static switch Download PDFInfo
- Publication number
- CN112366701B CN112366701B CN202011218958.XA CN202011218958A CN112366701B CN 112366701 B CN112366701 B CN 112366701B CN 202011218958 A CN202011218958 A CN 202011218958A CN 112366701 B CN112366701 B CN 112366701B
- Authority
- CN
- China
- Prior art keywords
- static switch
- power supply
- static
- supply circuit
- sts2
- 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
- 230000003068 static effect Effects 0.000 title claims abstract description 130
- 238000000034 method Methods 0.000 title claims abstract description 19
- 101150067286 STS1 gene Proteins 0.000 claims abstract description 45
- 101150005017 STS2 gene Proteins 0.000 claims abstract description 45
- 101100028967 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) PDR5 gene Proteins 0.000 claims abstract description 45
- 101150006480 Ubash3a gene Proteins 0.000 claims abstract description 45
- 101150027289 Ubash3b gene Proteins 0.000 claims abstract description 45
- 102100040337 Ubiquitin-associated and SH3 domain-containing protein A Human genes 0.000 claims abstract description 45
- 102100040338 Ubiquitin-associated and SH3 domain-containing protein B Human genes 0.000 claims abstract description 45
- 101100313728 Vitis vinifera VINST1 gene Proteins 0.000 claims abstract description 45
- 230000002159 abnormal effect Effects 0.000 claims description 9
- 238000005070 sampling Methods 0.000 claims description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000009191 jumping Effects 0.000 description 1
Classifications
-
- 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
- H02J3/007—Arrangements for selectively connecting the load or loads to one or several among a plurality of power lines or power sources
- H02J3/0073—Arrangements for selectively connecting the load or loads to one or several among a plurality of power lines or power sources for providing alternative feeding paths between load and source when the main path fails, e.g. transformers, busbars
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Stand-By Power Supply Arrangements (AREA)
- Dc-Dc Converters (AREA)
Abstract
The invention discloses a parallel connection method of static switches, which comprises setting two sets of static switches STS1 and STS2 which are arranged in parallel, wherein each set of static switch consists of six thyristors, a set of control board PCB and a set of thyristor driving board SQ, six thyristor three components in the static switch STS1 are a main thyristor group JZ1 and a standby thyristor group JZ2, six thyristor three components in the static switch STS2 are a main thyristor group JZ3 and a standby thyristor group JZ4, the static switch STS1 is a common switch, the static switch STS2 is a standby switch, the static switch STS1 is connected with a main power supply circuit A, the static switch STS2 is connected with a standby power supply circuit U, and the output end of the static switch STS1 and the output end of the static switch STS2 are connected in parallel; compared with a single static switch mode, the parallel static switch mode adopted by the method solves the problem of influence on power supply of important loads at the rear end due to single static switch failure, and improves the reliability of the static switch.
Description
Technical Field
The invention relates to a static switch, in particular to a parallel connection method of static switches.
Background
The static switch is an automatic switching device for realizing two paths of different alternating current power supplies (the frequency, the phase and the amplitude are possibly different), is an independent device unit, has independent power supplies, a detection circuit, a control circuit, a man-machine interaction interface and the like, and can realize the automatic or manual switching process of the main power supply and the standby power supply.
Static switches have the following advantages: 1. jumping without contact; 2. the mechanical noise is small; 3. the radio frequency interference is small; 4. since there is no movable member that is damaged, maintenance is easy; 5. no arcing (for use in places with explosive gases); 6. is not affected by impact and vibration; 7. can be installed in any direction; 8. the switching speed is high; 9. in many applications, the volume is small.
The main circuit of the conventional static switch is shown in fig. 1, and in general static switch products, a thyristor is respectively arranged as a switching device for main power supply and standby power supply, and a bypass maintenance switch is additionally arranged as a bypass channel, so that the bypass maintenance circuit of the static switch is described in fig. 2.
Under the circuit mode, when the thyristor device breaks down or the static switch control board breaks down, the static switch is not output, only manual switching is performed to bypass maintenance, the whole switching process is long, the rear-end load is not output with electric energy in the switching process, and power interruption is generated, so that the normal operation of important rear-end equipment is influenced.
Disclosure of Invention
The present invention is directed to a parallel connection method for static switches, so as to solve the problems set forth in the background art.
In order to achieve the above purpose, the present invention provides the following technical solutions:
A parallel connection method of static switches comprises the steps of setting two sets of static switches STS1 and STS2 which are arranged in parallel, wherein each set of static switch consists of six thyristors, a set of control board PCB and a set of thyristor driving board SQ, six thyristors in the static switch STS1 are divided into a main thyristor group JZ1 and a standby thyristor group JZ2, six thyristors in the static switch STS2 are divided into a main thyristor group JZ3 and a standby thyristor group JZ4, the static switch STS1 is a common switch, the static switch STS2 is a standby switch, the static switch STS1 is connected with a main power supply circuit A, the static switch STS2 is connected with a standby power supply circuit U, and the output end of the static switch STS1 and the output end of the static switch STS2 are connected in parallel.
The static switch STS1 and the static switch STS2 are respectively provided with a voltage sampling circuit, and the voltage sampling circuits are used for detecting the working states of the main power supply circuit A and the standby power supply circuit U; the static switch STS1 adopts a common static switch control mode, the states of a main power supply circuit A and a standby power supply circuit U are detected through the static switch STS1, when the main power supply circuit A is electrified, a main thyristor group JZ1 is conducted, a standby thyristor group JZ2 is closed, the main power supply circuit A outputs, when the main power supply circuit A is abnormal, the main thyristor group JZ1 is closed, the standby thyristor group JZ2 is conducted, and the standby power supply circuit U outputs; the static switch STS2 adopts a special static switch control mode, the states of the main power supply circuit A and the standby power supply circuit U are detected through the static switch STS2, the voltage of the total output ends of the static switch STS1 and the static switch STS2 is detected, when the static switch STS1 is normal, the total output end of the output end is detected to have output by the static switch STS2, and the main thyristor group JZ3 and the standby thyristor group JZ4 are in a closed state; when the static switch STS1 is abnormal, the static switch STS2 detects that the total output end has no voltage, on one hand, a control board PCB in the static switch STS2 sends out a control signal, and the thyristor driving board SQ of the static switch STS1 is blocked; when the main power supply circuit A is powered on, the main thyristor group JZ3 is turned on, the standby thyristor group JZ4 is turned off, and the main power supply circuit A outputs; when the main power supply circuit A is abnormal, the main thyristor group JZ3 is closed, the standby thyristor group JZ4 is turned on, and the standby power supply circuit U outputs, so that the static switch STS2 can control the output of the static switch STS1, and the condition that STS1 and STS2 are simultaneously output by the static switch can not occur.
As a preferred embodiment of the present invention: the control panel PCB is provided with an independent power supply GB, the power supply GB is a storage battery, and when the control panel PCB is used for adjusting and controlling work, the power supply GB can provide initial power supply when the static switch is not connected with the main power supply A or the standby power supply U; the control board PCB also has a three-phase current circuit.
Compared with the prior art, the invention has the beneficial effects that: compared with a single static switch mode, the parallel static switch mode adopted by the method solves the problem of influence on power supply of important loads at the rear end due to single static switch failure, and improves the reliability of the static switch.
Drawings
Fig. 1 is a main circuit diagram of a static switch in the prior art.
Fig. 2 is a circuit diagram of a bypass repair of a static switch in the prior art.
Fig. 3 is a schematic diagram of the technical scheme of the present invention.
Fig. 4 is a schematic circuit diagram of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
Example 1:
Referring to fig. 3-4, a parallel connection method of static switches includes setting two sets of static switches STS1 and STS2 arranged in parallel, each set of static switch is composed of six thyristors, a set of control board PCB and a set of thyristor driving board SQ, six thyristors in the static switch STS1 are three-component into a main thyristor group JZ1 and a standby thyristor group JZ2, six thyristors in the static switch STS2 are three-component into a main thyristor group JZ3 and a standby thyristor group JZ4, wherein the static switch STS1 is a common switch, the static switch STS2 is a standby switch, the static switch STS1 is connected with a main power supply circuit a, the static switch STS2 is connected with a standby power supply circuit U, and an output end of the static switch STS1 and an output end of the static switch STS2 are connected in parallel.
The static switch STS1 and the static switch STS2 are respectively provided with a voltage sampling circuit, and the voltage sampling circuits are used for detecting the working states of the main power supply circuit a and the standby power supply circuit U.
The static switch STS1 adopts a common static switch control mode, the states of the main power supply circuit A and the standby power supply circuit U are detected through the static switch STS1, when the main power supply circuit A is electrified, the main power thyristor group JZ1 is conducted, the standby power thyristor group JZ2 is closed, the main power supply circuit A outputs, when the main power supply circuit A is abnormal, the main power thyristor group JZ1 is closed, the standby power thyristor group JZ2 is conducted, and the standby power supply circuit U outputs.
The static switch STS2 adopts a special static switch control mode, the states of the main power supply circuit A and the standby power supply circuit U are detected through the static switch STS2, the voltage of the total output ends of the static switch STS1 and the static switch STS2 is detected, when the static switch STS1 is normal, the total output end of the output end is detected to have output by the static switch STS2, and the main thyristor group JZ3 and the standby thyristor group JZ4 are in a closed state; when the static switch STS1 is abnormal, the static switch STS2 detects that the total output end has no voltage, on one hand, a control board PCB in the static switch STS2 sends out a control signal, and the thyristor driving board SQ of the static switch STS1 is blocked; when the main power supply circuit A is powered on, the main thyristor group JZ3 is turned on, the standby thyristor group JZ4 is turned off, and the main power supply circuit A outputs; when the main power supply circuit A is abnormal, the main thyristor group JZ3 is closed, the standby thyristor group JZ4 is turned on, and the standby power supply circuit U outputs, so that the static switch STS2 can control the output of the static switch STS1, and the condition that STS1 and STS2 are simultaneously output by the static switch can not occur.
Compared with a single static switch mode, the parallel static switch mode adopted by the method solves the problem of influence on power supply of important loads at the rear end due to single static switch failure, and improves the reliability of the static switch.
Example 2:
On the basis of embodiment 1, the control board PCB is provided with an independent power supply GB, the power supply GB is a storage battery, and when the control board PCB is used for performing adjustment control operation, the power supply GB can provide initial power supply when the static switch is not connected with the main power supply a or the standby power supply U; meanwhile, the control board PCB is also provided with a three-phase current circuit.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (6)
1. The parallel connection method of the static switch is characterized by comprising two sets of static switches STS1 and STS2 which are arranged in parallel, wherein each set of static switch consists of six thyristors, a set of control board PCB and a set of thyristor driving board SQ, three components of six thyristors in the static switch STS1 are a main thyristor group JZ1 and a standby thyristor group JZ2, three components of six thyristors in the static switch STS2 are a main thyristor group JZ3 and a standby thyristor group JZ4, the static switch STS1 is connected with a main power supply circuit A, the static switch STS2 is connected with a standby power supply circuit U, the output end of the static switch STS1 and the output end of the static switch STS2 are connected in parallel, the static switch STS2 adopts a special static switch control mode, the states of the main power supply circuit A and the standby power supply circuit U are detected through the static switch STS2, the total output voltages of the static switch STS1 and the static switch STS2 are detected, and when the total output ends of the static switch STS1 are in the normal states, and the total output ends of the static switch STS2 are in the state of the main thyristor group JZ3 and the standby thyristor group; when the static switch STS1 is abnormal, the static switch STS2 detects that the total output end has no voltage, on one hand, a control board PCB in the static switch STS2 sends out a control signal, and the thyristor driving board SQ of the static switch STS1 is blocked; when the main power supply circuit A is powered on, the main thyristor group JZ3 is turned on, the standby thyristor group JZ4 is turned off, and the main power supply circuit A outputs; when the main power supply circuit A is abnormal, the main thyristor group JZ3 is closed, the standby thyristor group JZ4 is conducted, and the standby power supply circuit U outputs.
2. A method of paralleling static switches according to claim 1, wherein the static switch STS1 is a normal switch and the static switch STS2 is a standby switch.
3. A method of paralleling static switches according to claim 1, characterized in that both static switches STS1 and STS2 have voltage sampling circuits for detecting the operation state of the main supply circuit a and the standby supply circuit U.
4. A method for connecting static switches in parallel according to claim 3, wherein the static switch STS1 adopts a common static switch control mode, the states of the main power supply circuit a and the standby power supply circuit U are detected by the static switch STS1, when the main power supply circuit a is powered on, the main thyristor group JZ1 is turned on, the standby thyristor group JZ2 is turned off, the main power supply circuit a outputs, when the main power supply circuit a is abnormal, the main thyristor group JZ1 is turned off, the standby thyristor group JZ2 is turned on, and the standby power supply circuit U outputs.
5. A method of paralleling static switches according to claim 1, 2 or 3, characterized in that the control board PCB has an independent power source GB, which is a battery, which is capable of providing an initial power supply when the static switch is not connected to the main power supply a or the backup power supply U, when the control board PCB is subjected to the regulation control operation.
6. The method of claim 5, wherein the control board PCB further has a three-phase current circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011218958.XA CN112366701B (en) | 2020-11-04 | 2020-11-04 | Parallel connection method of static switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011218958.XA CN112366701B (en) | 2020-11-04 | 2020-11-04 | Parallel connection method of static switch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112366701A CN112366701A (en) | 2021-02-12 |
| CN112366701B true CN112366701B (en) | 2024-05-10 |
Family
ID=74513491
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011218958.XA Active CN112366701B (en) | 2020-11-04 | 2020-11-04 | Parallel connection method of static switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112366701B (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005192354A (en) * | 2003-12-26 | 2005-07-14 | Sanken Electric Co Ltd | Alternating-current switch device and power supply device using the same |
| CN101465549A (en) * | 2009-01-16 | 2009-06-24 | 中国电力科学研究院 | Reconstruction configuration method for two six-pulse parallel connection commutation group valve |
| CN101944764A (en) * | 2009-07-07 | 2011-01-12 | 天津市电力公司 | Thyristor forced commutation-based double-loop power supply switching device |
| CN102118058A (en) * | 2011-03-28 | 2011-07-06 | 广州地铁设计研究院有限公司 | Weak current integrated UPS power system applied to urban mass transit and power supply method |
| CN102570590A (en) * | 2012-01-05 | 2012-07-11 | 青岛经济技术开发区创统科技发展有限公司 | Solid-state changeover switch |
| CN103595118A (en) * | 2013-10-25 | 2014-02-19 | 江苏银佳企业集团有限公司 | Static transfer switch of EPS emergency power source |
| CN104485734A (en) * | 2015-01-21 | 2015-04-01 | 中国船舶重工集团公司第七0四研究所 | Three-phase alternating-current composite type static diverter switch |
| CN206650489U (en) * | 2017-03-23 | 2017-11-17 | 成都市雨田骏科技发展有限公司 | The redundant power supply circuit of single supply load |
| CN208508609U (en) * | 2018-07-10 | 2019-02-15 | 新疆华泰重化工有限责任公司 | The power control circuit of uninterrupted power supply |
| CN209844635U (en) * | 2019-04-24 | 2019-12-24 | 国网山东省电力公司费县供电公司 | Intelligent redundant power supply conversion device |
| WO2020147765A1 (en) * | 2019-01-18 | 2020-07-23 | 艾思得电子香港有限公司 | Method and apparatus for rapidly switching static transfer switch, storage medium, and terminal device |
-
2020
- 2020-11-04 CN CN202011218958.XA patent/CN112366701B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005192354A (en) * | 2003-12-26 | 2005-07-14 | Sanken Electric Co Ltd | Alternating-current switch device and power supply device using the same |
| CN101465549A (en) * | 2009-01-16 | 2009-06-24 | 中国电力科学研究院 | Reconstruction configuration method for two six-pulse parallel connection commutation group valve |
| CN101944764A (en) * | 2009-07-07 | 2011-01-12 | 天津市电力公司 | Thyristor forced commutation-based double-loop power supply switching device |
| CN102118058A (en) * | 2011-03-28 | 2011-07-06 | 广州地铁设计研究院有限公司 | Weak current integrated UPS power system applied to urban mass transit and power supply method |
| CN102570590A (en) * | 2012-01-05 | 2012-07-11 | 青岛经济技术开发区创统科技发展有限公司 | Solid-state changeover switch |
| CN103595118A (en) * | 2013-10-25 | 2014-02-19 | 江苏银佳企业集团有限公司 | Static transfer switch of EPS emergency power source |
| CN104485734A (en) * | 2015-01-21 | 2015-04-01 | 中国船舶重工集团公司第七0四研究所 | Three-phase alternating-current composite type static diverter switch |
| CN206650489U (en) * | 2017-03-23 | 2017-11-17 | 成都市雨田骏科技发展有限公司 | The redundant power supply circuit of single supply load |
| CN208508609U (en) * | 2018-07-10 | 2019-02-15 | 新疆华泰重化工有限责任公司 | The power control circuit of uninterrupted power supply |
| WO2020147765A1 (en) * | 2019-01-18 | 2020-07-23 | 艾思得电子香港有限公司 | Method and apparatus for rapidly switching static transfer switch, storage medium, and terminal device |
| CN209844635U (en) * | 2019-04-24 | 2019-12-24 | 国网山东省电力公司费县供电公司 | Intelligent redundant power supply conversion device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112366701A (en) | 2021-02-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204425031U (en) | A kind of intelligent diverter switch | |
| US20130094266A1 (en) | Voltage inverter and method of controlling such an inverter | |
| JP2011502462A (en) | Selection switch device, power supply device using the same, and switching method thereof | |
| CN207853453U (en) | Backup battery circuit, motor driver and electric vehicle | |
| CN107707128A (en) | Variable frequency driving circuit, system and direct current bus capacitor charging method | |
| JP2022025016A (en) | Drawable hybrid switching device | |
| CN112366701B (en) | Parallel connection method of static switch | |
| US8743521B2 (en) | Photovoltaic system with overvoltage protection | |
| CN115856618B (en) | Low-voltage switch equipment short circuit test device and method based on energy storage power supply | |
| CN204030971U (en) | The power cell with bypass functionality of unit series connection type high voltage frequency convertor | |
| CN215580355U (en) | Capacitor protection circuit, capacitor protection circuit controlled by MCU, battery discharge circuit and battery discharge circuit controlled by MCU | |
| CN112952983B (en) | Power supply switching circuit and control method thereof | |
| CN111308300B (en) | Direct-current breaker semiconductor device online monitoring device and control method thereof | |
| CN104092281B (en) | A kind of exchange dual power supply switching method | |
| CN114156988A (en) | Power supply circuit and loop resistance tester | |
| CN107896102B (en) | Hybrid switch with main channel connected with solid-state switch in series | |
| CN111137133B (en) | Protection circuit of electric automobile electric drive system and electric automobile electric drive system | |
| CN204614686U (en) | Electrical apparatus-switching device | |
| CN211656086U (en) | Solar power station with direct current circuit on-off device | |
| CN214704425U (en) | Unmanned aerial vehicle control circuit | |
| CN219513805U (en) | Alternating current-direct current dual power supply mixed cutting device | |
| CN217508280U (en) | System for controlling direct current input of photovoltaic system | |
| CN220673450U (en) | 5G base station emergency lighting cabinet | |
| CN217305438U (en) | Limit working condition test platform of alternating current switch device | |
| CN210666494U (en) | Electronic speed regulator with built-in super-large BEC |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |