CN101662154A - Link control panel of IGBT valve of chain static synchronous compensator - Google Patents
Link control panel of IGBT valve of chain static synchronous compensator Download PDFInfo
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- CN101662154A CN101662154A CN200910307704A CN200910307704A CN101662154A CN 101662154 A CN101662154 A CN 101662154A CN 200910307704 A CN200910307704 A CN 200910307704A CN 200910307704 A CN200910307704 A CN 200910307704A CN 101662154 A CN101662154 A CN 101662154A
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- 238000004891 communication Methods 0.000 claims abstract description 33
- 238000001514 detection method Methods 0.000 claims abstract description 25
- 238000012545 processing Methods 0.000 claims abstract description 9
- 238000012544 monitoring process Methods 0.000 claims abstract description 7
- 230000036760 body temperature Effects 0.000 claims abstract description 4
- 238000006243 chemical reaction Methods 0.000 claims description 18
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- 238000004146 energy storage Methods 0.000 abstract 3
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- 230000005622 photoelectricity Effects 0.000 description 5
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Abstract
The invention relates to a link control panel of an IGBT valve of a chain static synchronous compensator. An energy storage circuit input and an energy storage circuit output of a high-potential dualpower supply are connected with a primary equipment high potential side and a power supply changeover circuit input respectively, a power supply changeover circuit output is connected with a power supply monitoring circuit and a voltage signal input of a DC voltage detection circuit, an output thereof is connected with a logic protection circuit which is connected with an IGBT valve detection signal, a valve body temperature detection signal, a DC voltage detection signal and a fault indication signal, a valve body locking instruction and a valve status signal thereof are connected with a pulse distribution and dead zone processing circuit and a communication processor respectively, the communication processor is connected with a DC voltage signal at a DC, a light emission and receiving circuit, and a control instruction of the communication processor is connected with the pulse distribution and dead zone processing circuit. The link control panel is used for solving of complicated energy storage technology, imperfect trigger and real-time detection of the IGBT valve, anti-interference of the link control panel and communication with surface equipment in the prior art.
Description
Technical field
The present invention relates to a kind of link control panel of IGBT valve of chain static synchronous compensator, belong to field of power electronics.
Background technology
Along with the expansion of China's " transferring electricity from the west to the east " implementation and interconnected network scale, the voltage stable problem is particularly outstanding.The subject matter that the ultra-large type load center that the Pearl River Delta and the Yangtze River Delta form exists is that dynamic reactive supports deficiency day by day.Recent two decades comes, and by the stable large area blackout that causes with voltage collapse of voltage, also repeatedly takes place in China's voltage collapse accident all over the world.Adopting STATCOM (STATCOM) is one of effective measures that address these problems, it has brought into play considerable effect in solving problems such as the grid stability and the distribution quality of power supply, be the advanced practical technique that present various countries generally adopt, link control panel is one of core technology of STATCOM technology.
Because IGBT valve of chain static synchronous compensator generally all is in high potential, the insulation against ground electric pressure generally is 10kV or 6kV, therefore adopts conventional control method can not meet the demands.Compare with traditional controlling object, the major technology difficult point is as follows: 1), different with the system that is in ground because link control panel is positioned at high potential, and the energy problem that must solve link control panel; 2) link control panel is positioned at hot side, its electromagnetic environment of living in is more abominable, big electric current, the high field intensity of transmission line can cause bigger electromagnetic interference to the electronics triggering system on the one hand, on the other hand, the high-speed switch process of IGBT valve also can produce a large amount of strong electromagnetic, therefore must solve the Anti-interference Design problem of link control panel; 3) the communication problem between link control panel and ground installation; 4) the IGBT valve triggers and the control strategy that detects in real time.
The patent No. is the thyristor valve photoelectricity trigger board that 200510064687.6 patent of invention specification discloses a kind of silent oscillation reactive power compensator, this photoelectricity trigger board is normally corresponding one by one with thyristor, thyristor is taked the mode of connecting, cause the quantity of thyristor valve photoelectricity trigger board more like this, cause the volume of thyristor valve bigger, floor space is many; The triggering signal of thyristor valve photoelectricity trigger board is by the pulse code of control system being deciphered the single trigger impulse that obtains, triggering system and supervisory control system only produce single or two trigger impulses in each cycle in addition, can not produce high-frequency pulse string, also can reduce the performance of compensator, the mode that can adopt current transformer to get energy of getting of this photoelectricity trigger board solves in addition, technical sophistication realizes that difficulty is big.
Summary of the invention
The purpose of this invention is to provide a kind of adopt voltage transformer from high potential energy collecting, IGBT valve trigger with detect in real time perfect, antijamming capability strong and have the link control panel of IGBT valve of chain static synchronous compensator that communicates function with ground installation, with getting of solving that prior art exists can technical sophistication, the IGBT valve triggers with detect imperfection in real time, link control panel is anti-interference and the problem that communicates with ground installation.
For achieving the above object; the present invention adopts following technical scheme: a kind of link control panel of IGBT valve of chain static synchronous compensator; this link control panel comprises that high potential mutual inductance type double loop power supply is got can the loop; power source conversion and monitoring circuit; the virtual protection loop; pulse distribution and dead band treatment loop; the light-receiving loop; light launching circuit and communication processor; the input that described high potential mutual inductance type double loop power supply is got the energy loop connects the primary equipment hot side; its output is connected with the input of power-switching circuit; the output in described power source conversion loop connects power monitor circuit voltage signal input respectively; dc voltage detects the loop voltage signal input part and connects; the output of described power monitor circuit inserts the virtual protection loop; described virtual protection loop also is connected to IGBT valve detection signal; IGBT valve body temperature detection signal and dc voltage detection signal and fault indication signal; the IGBT valve body blocking order in described virtual protection loop inserts pulse distribution and dead band treatment loop; the IGBT valve body status signal access communications processor in described virtual protection loop; described communication processor also has access to the DC side d. c. voltage signal; the control command of described communication processor inserts pulse distribution and dead band treatment loop, and described communication processor also is connected with light launching circuit and light-receiving loop.
Described high potential mutual inductance type double loop power supply is got and can be comprised the voltage transformer that a two-way is exported in the loop, the input of described voltage transformer connects the primary equipment hot side, every road output of described voltage transformer is connected with filtering and anti-interference loop, the output of described each filtering and anti-jamming circuit is connected to the input in power source conversion loop, and the output in described power source conversion loop is used for powering to the active device on this link control panel and another road link control panel.
Described virtual protection loop comprise six or; wherein first or two inputs of door and second or two inputs of door be connected to the detection signal of four IGBT valves of chain static synchronous compensator respectively; the described the 3rd or the door two inputs be connected to dc voltage detection signal and temperature detection signal respectively; described first or the door output with second the door output respectively with the 4th or the door two inputs be connected; the described the 3rd or the output of door and the output signal of power monitor circuit be connected with the 5th or two inputs of door respectively; the described the 4th or the output of door with the 5th or the output of door is connected the described the 6th or the output access central logic processing unit of door respectively with the 6th or two inputs of door.
Described pulse distribution and dead band treatment loop comprise pulsqe distributor; described pulsqe distributor has access to two-way respectively and drives pwm signal respectively through the two-way pwm signal after dead band and the anti-phase processing from the PWM drive signal in light-receiving loop and this two-way; described pulsqe distributor also is connected to the valve body blocking order in virtual protection loop and the control command of communication processor, and four road pwm signals of described pulsqe distributor output are used to be connected respectively to four IGBT valves of chain static synchronous compensator by pulse amplifier.
Described power monitor circuit comprises two isolation branch roads; described two isolation branch roads comprise a photoelectrical coupler respectively; the positive pole of described first photoelectrical coupler photodiode connects the output cathode in power source conversion loop by a current-limiting resistance; its negative pole connects the positive pole of second photoelectrical coupler photodiode by another current-limiting resistance; the negative pole of second photoelectrical coupler photodiode connects the ground in power source conversion loop; described first collector electrode with second photoelectrical coupler coupling triode connects the respective input in virtual protection loop respectively; their collector electrode connects the positive source in virtual protection loop respectively by a pull-up resistor, their emitter connects the ground in virtual protection loop together.
The fault indication signal of described virtual protection circuit is used for being connected with failure indicating circuit.
The invention has the beneficial effects as follows: link control panel of the present invention is directly powered from the high pressure side-draw can be connected on the control board for simultaneously this link control panel by the power source conversion loop then with another road active device by high voltage potential transformer, it is simple to get energy current supply circuit topological structure, and realized and high pressure major loop, two electrical isolation that are connected between the control board, improve the operational reliability of link control panel, reduced equipment cost; Described virtual protection circuit can be simultaneously to power monitor circuit, the dc voltage detection signal, the IGBT detection signal, temperature detection signal detects, after detecting fault-signal, send the blocking order of IGBT valve body and give pulse distribution and dead band treatment loop locking IGBT valve, send the valve body status signal simultaneously and give communication processor, by communication processor the valve body state information is sent to the chain static synchronous compensator master controller by the light launching circuit, the control command of sending master controller realizes the locking of all IGBT valves, thereby realize quick protection to valve body, perfect in shape and function, the reliability height; Described pulse distribution and dead band treatment circuit carry out the dead band to triggering signal to be handled and logical process, generate 4 tunnel high frequency trigger impulses by 2 road input signals and give IGBT valve of chain static synchronous compensator with dead band, and Dead Time can free adjustment, compare control board quantity reduces with the thyristor valve control board, volume reduces, the little and triggering frequency height of floor space; Described communication processor is given the chain static synchronous compensator master controller with the state information of dc voltage value and valve body by the light launching circuit, carries out algorithm controls and status monitoring for it; Accept the control command of chain static synchronous compensator master controller simultaneously; finish reset, the realization of logic such as shutdown, startup; because communication port all adopts optical fiber to realize, thereby has realized high potential and earthy electrical isolation, has also strengthened the antijamming capability of transmission channel simultaneously.
Description of drawings
Fig. 1 is a system block diagram of the present invention;
Fig. 2 is the schematic diagram that high potential mutual inductance type double loop power supply is got the energy loop;
Fig. 3 is the schematic diagram of power monitor circuit;
The schematic diagram in Fig. 4 virtual protection loop;
Fig. 5 is the schematic diagram of pulse distribution and dead band treatment loop;
Fig. 6 is the use principle figure of communication processor.
Embodiment
In conjunction with Fig. 1 link control panel of IGBT valve of chain static synchronous compensator of the present invention is described; this link control panel comprises that high potential mutual inductance type double loop power supply is got can the loop; power source conversion and monitoring circuit; the virtual protection loop; pulse distribution and dead band treatment loop; the light-receiving loop; light launching circuit and communication processor; the input that described high potential mutual inductance type double loop power supply is got the energy loop connects the primary equipment hot side; its output is connected with the input of power-switching circuit; the output in described power source conversion loop is connected with the power monitor circuit input; the output of described power monitor circuit inserts the virtual protection loop; described virtual protection loop also is connected to IGBT valve detection signal; IGBT valve body temperature detection signal and dc voltage detection signal and fault indication signal; the IGBT valve body blocking order in described virtual protection loop inserts pulse distribution and dead band treatment loop; its IGBT valve body status signal access communications processor; described communication processor also has access to the DC side d. c. voltage signal; the control command of described communication processor inserts pulse distribution and dead band treatment loop, and described communication processor also is connected with light launching circuit and light-receiving loop.
Illustrating in conjunction with Fig. 2 that described high potential double loop power supply is got can the loop and the power source conversion loop, it comprises the voltage transformer of a two-way output, the input of described voltage transformer connects the primary equipment hot side, every road output of described voltage transformer all is connected with a filter circuit and anti-jamming circuit, the output of described each filtering and anti-jamming circuit all is connected with the input of the voltage of an AC/DC power-switching circuit, and described each AC/DC power-switching circuit output+5V and ± 15V voltage are respectively on the link control panel active device in other circuit and power.
In conjunction with Fig. 3 described power monitor circuit is described; this loop comprises two isolation branch roads; described two isolation branch roads comprise photoelectrical coupler U1 and photoelectrical coupler U2 respectively; the positive pole of described photoelectrical coupler U1 photodiode by current-limiting resistance R1 connect the power source conversion loop+15V output; its negative pole connects the positive pole of photoelectrical coupler U2 photodiode by other current-limiting resistance R3; the negative pole of photoelectrical coupler U2 photodiode connects the ground in power source conversion loop; the collector electrode of the collector electrode of described photoelectrical coupler U1 coupling triode and photoelectrical coupler U2 coupling triode connects the respective input in virtual protection loop respectively; their collector electrode meets the power supply VCC in virtual protection loop respectively by pull-up resistor R2 and pull-up resistor R4, their emitter connects the ground in virtual protection loop together.
In conjunction with Fig. 4 described virtual protection circuit is described; it comprise six or; wherein first or two inputs of door U1 and second or two inputs of door U2 be connected to first fault detection signal of chain static synchronous compensator respectively to the 4th IGBT valve; the described the 3rd or the door U3 two inputs be connected to DC side excess voltage detection signal and IGBT valve body excess temperature detection signal respectively; described first or the door U1 output with second the door U2 output respectively with the 4th or the door U4 two inputs be connected; the described the 3rd or the output signal of the door output of U3 and power supply monitoring circuit be connected with the 5th or two inputs of door U5 respectively; the described the 4th or the door U4 output with the 5th the door U5 output respectively with the 6th or the door U6 two inputs be connected; the described the 6th or the output of door U6 insert central logic processing unit, the IGBT valve body blocking order signal of described central logic processing unit; IGBT valve body status signal and fault indication signal are respectively applied for correspondence and are connected to pulse distributor; communication processor and failure indicating circuit.
In conjunction with Fig. 5 described pulse distribution and dead band treatment loop are described; it comprises pulsqe distributor; described pulsqe distributor is connected to PWM drive signal that two-way passes over by optical fiber from the upper strata controller and this two-way PWM drive signal respectively respectively through the two-way pwm signal after dead band and the anti-phase processing by the light-receiving loop; described pulsqe distributor also is connected to the control command of the valve body blocking order and the communication processor output of virtual protection circuit output, and four road above-mentioned PWM output signals are distributed four IGBT valves that are connected to chain static synchronous compensator after by pulse amplifier four road pwm signals being amplified then respectively by pulsqe distributor.
In conjunction with Fig. 6 described communication processor use principle is described; its mainly finish and the master controller of chain static synchronous compensator between communication work; the communication processor DC side dc voltage value that receives and IGBT valve body state information are sent to chain static synchronous compensator by optical transmission circuit master controller at first; carry out algorithm controls and status monitoring for master controller; accept the control command of the master controller of chain static synchronous compensator simultaneously by optical receiving circuit; by communication processor control command is sent to pulse distributor, finish chain static synchronous compensator and reset; shut down; the realization of logics such as startup.
Claims (6)
1. link control panel of IGBT valve of chain static synchronous compensator; it is characterized in that: this link control panel comprises that high potential mutual inductance type double loop power supply is got can the loop; power source conversion and monitoring circuit; the virtual protection loop; pulse distribution and dead band treatment loop; the light-receiving loop; light launching circuit and communication processor; the input that described high potential mutual inductance type double loop power supply is got the energy loop connects the primary equipment hot side; its output is connected with the input of power-switching circuit; the output in described power source conversion loop connects power monitor circuit voltage signal input respectively; dc voltage detects the loop voltage signal input part and connects; the output of described power monitor circuit inserts the virtual protection loop; described virtual protection loop also is connected to IGBT valve detection signal; IGBT valve body temperature detection signal and dc voltage detection signal and fault indication signal; the IGBT valve body blocking order in described virtual protection loop inserts pulse distribution and dead band treatment loop; the IGBT valve body status signal access communications processor in described virtual protection loop; described communication processor also has access to the DC side d. c. voltage signal; the control command of described communication processor inserts pulse distribution and dead band treatment loop, and described communication processor also is connected with light launching circuit and light-receiving loop.
2. link control panel of IGBT valve of chain static synchronous compensator according to claim 1, it is characterized in that: described high potential mutual inductance type double loop power supply is got and can be comprised the voltage transformer that a two-way is exported in the loop, the input of described voltage transformer connects the primary equipment hot side, every road output of described voltage transformer is connected with filtering and anti-interference loop, the output of described each filtering and anti-jamming circuit is connected to the input in power source conversion loop, and the output in described power source conversion loop is used for powering to the active device on this link control panel and another road link control panel.
3. link control panel of IGBT valve of chain static synchronous compensator according to claim 1 and 2; it is characterized in that: described virtual protection loop comprise six or; wherein first or two inputs of door and second or two inputs of door be connected to the detection signal of four IGBT valves of chain static synchronous compensator respectively; the described the 3rd or the door two inputs be connected to dc voltage detection signal and temperature detection signal respectively; described first or the door output with second the door output respectively with the 4th or the door two inputs be connected; the described the 3rd or the output of door and the output signal of power monitor circuit be connected with the 5th or two inputs of door respectively; the described the 4th or the output of door with the 5th or the output of door is connected the described the 6th or the output access central logic processing unit of door respectively with the 6th or two inputs of door.
4. link control panel of IGBT valve of chain static synchronous compensator according to claim 3; it is characterized in that: described pulse distribution and dead band treatment loop comprise pulsqe distributor; described pulsqe distributor has access to two-way respectively and drives pwm signal respectively through the two-way pwm signal after dead band and the anti-phase processing from the PWM drive signal in light-receiving loop and this two-way; described pulsqe distributor also is connected to the valve body blocking order in virtual protection loop and the control command of communication processor, and four road pwm signals of described pulsqe distributor output are used to be connected respectively to four IGBT valves of chain static synchronous compensator by pulse amplifier.
5. link control panel of IGBT valve of chain static synchronous compensator according to claim 4; it is characterized in that: described power monitor circuit comprises two isolation branch roads; described two isolation branch roads comprise a photoelectrical coupler respectively; the positive pole of described first photoelectrical coupler photodiode connects the output cathode in power source conversion loop by a current-limiting resistance; its negative pole connects the positive pole of second photoelectrical coupler photodiode by another current-limiting resistance; the negative pole of second photoelectrical coupler photodiode connects the ground in power source conversion loop; described first collector electrode with second photoelectrical coupler coupling triode connects the respective input in virtual protection loop respectively; their collector electrode connects the positive source in virtual protection loop respectively by a pull-up resistor, their emitter connects the ground in virtual protection loop together.
6. link control panel of IGBT valve of chain static synchronous compensator according to claim 5 is characterized in that: the fault indication signal of described virtual protection circuit is used for being connected with failure indicating circuit.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009103077042A CN101662154B (en) | 2009-09-25 | 2009-09-25 | Link control panel of IGBT valve of chain static synchronous compensator |
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| CN2009103077042A CN101662154B (en) | 2009-09-25 | 2009-09-25 | Link control panel of IGBT valve of chain static synchronous compensator |
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| CN101662154A true CN101662154A (en) | 2010-03-03 |
| CN101662154B CN101662154B (en) | 2011-07-06 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102097926A (en) * | 2011-01-14 | 2011-06-15 | 中国电力科学研究院 | Failure protection method for high-order energy gaining power supply |
| CN102118101A (en) * | 2011-01-14 | 2011-07-06 | 中国电力科学研究院 | Dead zone control combined communication method for trigger signals of flexible DC converter |
| CN102664418A (en) * | 2012-04-19 | 2012-09-12 | 威凡智能电气高科技有限公司 | PLC (programmable logic controller)-based on-line monitoring method in STATCOM (static synchronous compensator) |
| CN104065057A (en) * | 2014-05-29 | 2014-09-24 | 浙江大学 | Filtering method for direct-current side voltage of cascaded distribution static synchronous compensator |
| CN104466992A (en) * | 2014-12-31 | 2015-03-25 | 山东蓝天电能科技有限公司 | Chained SVG chain link control system and method |
| CN106981973A (en) * | 2016-01-19 | 2017-07-25 | 西安奥特迅电力电子技术有限公司 | A kind of stand-by power supply method for high-voltage chain type power unit control plate |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN100403651C (en) * | 2005-04-20 | 2008-07-16 | 中国电力科学研究院 | Thyrister valve photoelectric triger plate for stationary reactive power compensator |
| CN1738144A (en) * | 2005-09-01 | 2006-02-22 | 上海交通大学 | Single-phase transformer four-layer IGBT type dynamic reactive compensator |
| CN201307850Y (en) * | 2008-12-08 | 2009-09-09 | 顺特电气有限公司 | Thyristor valve photoelectric trigger board used for static var compensator |
-
2009
- 2009-09-25 CN CN2009103077042A patent/CN101662154B/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102097926A (en) * | 2011-01-14 | 2011-06-15 | 中国电力科学研究院 | Failure protection method for high-order energy gaining power supply |
| CN102118101A (en) * | 2011-01-14 | 2011-07-06 | 中国电力科学研究院 | Dead zone control combined communication method for trigger signals of flexible DC converter |
| CN102118101B (en) * | 2011-01-14 | 2014-03-12 | 中国电力科学研究院 | Dead zone control combined communication method for trigger signals of flexible DC converter |
| CN102097926B (en) * | 2011-01-14 | 2014-05-21 | 中国电力科学研究院 | Failure protection method for high-order energy gaining power supply |
| CN102664418A (en) * | 2012-04-19 | 2012-09-12 | 威凡智能电气高科技有限公司 | PLC (programmable logic controller)-based on-line monitoring method in STATCOM (static synchronous compensator) |
| CN102664418B (en) * | 2012-04-19 | 2014-07-02 | 威凡智能电气高科技有限公司 | PLC (programmable logic controller)-based on-line monitoring method in STATCOM (static synchronous compensator) |
| CN104065057A (en) * | 2014-05-29 | 2014-09-24 | 浙江大学 | Filtering method for direct-current side voltage of cascaded distribution static synchronous compensator |
| CN104065057B (en) * | 2014-05-29 | 2016-03-02 | 浙江大学 | A kind of filtering method of cascade Distribution Static Compensator DC voltage |
| CN104466992A (en) * | 2014-12-31 | 2015-03-25 | 山东蓝天电能科技有限公司 | Chained SVG chain link control system and method |
| CN106981973A (en) * | 2016-01-19 | 2017-07-25 | 西安奥特迅电力电子技术有限公司 | A kind of stand-by power supply method for high-voltage chain type power unit control plate |
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Effective date of registration: 20121023 Address after: No. 1298 Xuchang City, Henan province 461000 XJ Avenue Patentee after: Xuji Group Co., Ltd. Patentee after: Xuji Electric Power Co., Ltd. Patentee after: State Grid Corporation of China Address before: No. 1298 Xuchang City, Henan province 461000 XJ Avenue Patentee before: Xuji Group Co., Ltd. Patentee before: Xuji Electric Power Co., Ltd. |
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Granted publication date: 20110706 Termination date: 20190925 |