CN1744419A - Monitoring system for capcade multi-level high-voltage frequency transfomrer power unit - Google Patents
Monitoring system for capcade multi-level high-voltage frequency transfomrer power unit Download PDFInfo
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- CN1744419A CN1744419A CN 200510105775 CN200510105775A CN1744419A CN 1744419 A CN1744419 A CN 1744419A CN 200510105775 CN200510105775 CN 200510105775 CN 200510105775 A CN200510105775 A CN 200510105775A CN 1744419 A CN1744419 A CN 1744419A
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Abstract
Belonging to technical area of frequency converter in high voltage, the system includes system power source, monitoring indicator light, reception for inputting from optical fiber, transmission for outputting to optical fiber, complex programmable logic device, detection for input voltage, assignment of input voltage, comparator, temperature test, photoelectric coupler, buffer circuit etc. Advantages of the invention are: making power unit of cascaded typed high voltage frequency converter in multiple electrical levels in well monitored state, and protecting power unit.
Description
Technical field
The invention belongs to the high voltage converter technical field; a kind of supervisory control system of capcade multi-level high-voltage frequency transfomrer power unit particularly is provided; be the application of electronic technology in high voltage converter; it designs at capcade multi-level high-voltage frequency transfomrer power unit, can monitor in real time and protects the power cell in the high voltage converter.
Background technology
Capcade multi-level high-voltage frequency transfomrer has been applied in the industrial production; because it adopts a plurality of cascade of power units modes; so to the monitoring of power cell show especially important; monitoring to power cell has multiple implementation method; along with electronic device, development of electronic technology; adopt the novel electron device, and have the device that signal is had the fast processing function, will carry out good monitoring and reliable protection power cell.
Summary of the invention
The object of the present invention is to provide a kind of supervisory control system of capcade multi-level high-voltage frequency transfomrer power unit; it designs for capcade multi-level high-voltage frequency transfomrer power unit; finish real-time monitoring to power cell; the fault that occurs is shown; and the counterweight fault carries out bypass action, and power cell is played good protecting function.
The present invention includes: system power supply 1, supervisory pilot light 4, optical fiber input receive 6, optical fiber output sends 5, CPLD 3, input voltage detect 10, input voltage is given 11, comparator 7, temperature detection 12, photoelectrical coupler 13, buffer circuit 8, photoelectric isolated chip 9, bypass protection 2.Optical fiber input receives 6, optical fiber output sends 5 and connects with CPLD 3; CPLD 3 connects with buffer circuit 8; buffer circuit 8 connects with photoelectric isolated chip 9; input voltage detection 10 and input voltage given 11 connect with comparator 7; temperature detection 12 connects with photoelectrical coupler 13, and photoelectrical coupler 13, bypass protection 2, supervisory pilot light 4 and comparator 7 connect with CPLD 3.
From the pulse of optical fiber input with enable light signal input receives through optical fiber, is connected with CPLD, signal and cushions circuit and is connected after treatment, and after signal was cushioned, the process photoelectric isolated chip linked to each other with output; Meanwhile, this supervisory control system is monitored the voltage of the input of power cell, and is given through behind the comparator with input voltage, is connected with CPLD; After by temperature sensor the working temperature of power cell being carried out temperature detection, be connected with CPLD through photoelectrical coupler; The fault-signal that returns; link to each other with photoelectric isolated chip; after the process buffer circuit cushions fault-signal; send into CPLD; through logical process, after the type of failure judgement, send fault-signal; send into supervisory pilot light; meanwhile, with fault message, by optical fiber with fault message; import higher level's control system into; if heavy fault will be carried out the corresponding protection action, promptly send control signal by CPLD; drive the bypass circuit part, bypass is played a protective role.
The present invention makes the light signal of input after receiving, utilize the fast processing function of CPLD, to change the back signal of telecommunication accurately and export, simultaneously, the fault-signal that feeds back, after treated, utilize the powerful logical process function of CPLD, the kind of fault is carried out analyzing and processing, make corresponding indication, and send signal, protective circuit works; In addition, the working temperature of power cell is detected, and the information that detects is handled.
Pulse and enable two ways of optical signals and be input to optical fiber input and receive 6, the signal of telecommunication is sent into CPLD 3, process CPLD 3 distributes and handles, and after cushioning by 8 pairs of signals of buffer circuit, through photoelectric isolated chip 9 signal is exported again.
Detect the signal of 10 detected voltages and input voltage given 11 through input voltage and send into comparator 7 simultaneously, result after comparison sends into CPLD 3, if the voltage that detects is not within given voltage range, through after the analyzing and processing of CPLD 3, if exceeding the scope of given voltage is exactly overvoltage, having corresponding overvoltage indicator light to show, is exactly under voltage if be lower than the scope of given voltage, has corresponding under voltage indicator light to show.
The fault message of power cell, after the effect by photoelectric isolated chip 9, after the buffering through 8 pairs of fault-signals of buffer circuit, send into CPLD 3, CPLD 3 is by its powerful logical process function, and the fault-signal to input carries out analyzing and processing respectively, determine which kind of fault-signal fault-signal belongs to, simultaneously, drive corresponding supervisory pilot light 4, carry out fault and show.Meanwhile, system is divided into out four kinds of malfunctions, and output sends 5 through optical fiber, with representing two light signals of four kinds of fault-signals, sends into higher level's control system.In four kinds of malfunctions, only occur under the situation that weighs fault (as overvoltage), bypass protection 2 sends control signal through CPLD 3, carries out the bypass action, and defencive function comes into force.
The advantage of this supervisory control system is: (1) has used CPLD, and the signal of input and feedback is handled fast, finishes real-time monitoring, and the fault to occurring, and sends control signal, and power cell is protected.(2) because this supervisory control system is used on the power cell, be in the environment of high pressure, so the pulse that connects with higher level's control system, enable signal and feedback fault have all adopted optical fiber to connect.(3) this supervisory control system can to the fault message that occurs timely, errorless import higher level's control system into, in this supervisory control system, corresponding fault is shown simultaneously.
Description of drawings
Fig. 1 is the structural representation of this patent type.Comprise: system power supply 1, bypass protection 2, CPLD 3, supervisory pilot light 4, optical fiber output send 5, the optical fiber input receives 6, comparator 7, buffer circuit 8, photoelectric isolated chip 9, input voltage detect 10, input voltage is given 11, temperature detection 12, photoelectrical coupler 13.
Embodiment
Below in conjunction with accompanying drawing this patent is further described.
See also shown in Figure 1; a kind of supervisory control system of capcade multi-level high-voltage frequency transfomrer power unit comprises: system power supply (1); supervisory pilot light (4); the optical fiber input receives (6); optical fiber output sends (5); CPLD (3); input voltage detects (10); input voltage given (11); comparator (7); temperature detection (12); photoelectrical coupler (13); buffer circuit (8); photoelectric isolated chip (9); bypass protection (2); the optical fiber input receives (6) and optical fiber output transmission (5) connects with CPLD (3); CPLD (3) connects with buffer circuit (8); buffer circuit (8) connects with photoelectric isolated chip (9); input voltage detects (10) and input voltage given (11) connects with comparator (7); temperature detection (12) connects with photoelectrical coupler (13), photoelectrical coupler (13); bypass protection (2); supervisory pilot light (4) and comparator (7) connect with CPLD (3).
Pulse and enable two ways of optical signals and be input to optical fiber input and receive (6) R-2521, the signal of telecommunication is sent into CPLD (3), process CPLD (3) distributes and handles, after buffer circuit (8) use chip 74HC244 cushions signal, through photoelectric isolated chip (9) CD4504 signal is exported again.
Input voltage detects the signal of detected voltage of (10) working voltage instrument transformer LV25-P and input voltage given (11) and sends into comparator (7) LM348 simultaneously, result after comparison sends into CPLD (3), if the voltage that detects is not within given voltage range, after the analyzing and processing through CPLD (3), if exceeding the scope of given voltage is exactly overvoltage, there is corresponding overvoltage indicator light to show, if being lower than the scope of given voltage is exactly under voltage, there is corresponding under voltage indicator light to show.
Temperature detection (12) serviceability temperature sensor is to the temperature signal of power cell real work, after the buffer action through photoelectrical coupler (13) TLP-521, do not have interference signals to send into CPLD (3) and carry out analyzing and processing, if detected temperature signal is a normal signal, CPLD (3) will not have corresponding action, if detected temperature signal is improper signal, CPLD (3) CPLD will be exported control signal, drive supervisory pilot light (4) and show excess temperature, simultaneously alarm.
The fault message of power cell, after the effect by photoelectric isolated chip (9) CD4504, after the buffering of buffer circuit (8) 74HC244 to fault-signal, send into CPLD (3), CPLD (3) is by its powerful logical process function, and the fault-signal to input carries out analyzing and processing respectively, determine which kind of fault-signal fault-signal belongs to, simultaneously, drive corresponding supervisory pilot light (4), carry out fault and show.Meanwhile, system is divided into out four kinds of malfunctions, and output sends (5) T-1521 through optical fiber, with representing two light signals of four kinds of fault-signals, sends into higher level's control system.
In four kinds of malfunctions, only occur under the situation that weighs fault (as overvoltage), bypass protection (2) sends control signal through CPLD (3), carries out the bypass action, and defencive function comes into force.
This patent can make capcade multi-level high-voltage frequency transfomrer power unit be in good monitor state, and power cell is had good protective effect.
Claims (6)
1, a kind of supervisory control system of capcade multi-level high-voltage frequency transfomrer power unit comprises: system power supply (1), supervisory pilot light (4), optical fiber input receive (6), optical fiber output sends (5), CPLD (3), input voltage detection (10), input voltage given (11), comparator (7), temperature detection (12), photoelectrical coupler (13), buffer circuit (8), photoelectric isolated chip (9), bypass protection (2); It is characterized in that: the optical fiber input receives (6) and optical fiber output transmission (5) connects with CPLD (3); CPLD (3) connects with buffer circuit (8); buffer circuit (8) connects with photoelectric isolated chip (9); input voltage detects (10) and input voltage given (11) connects with comparator (7); temperature detection (12) connects with photoelectrical coupler (13), and photoelectrical coupler (13), bypass protection (2), supervisory pilot light (4) and comparator (7) connect with CPLD (3).
2, supervisory control system according to claim 1, it is characterized in that: pulse and enable two ways of optical signals and be input to optical fiber input and receive (6), the signal of telecommunication is sent into CPLD (3), process CPLD (3) distributes and handles, after by buffer circuit (8) signal being cushioned, through photoelectric isolated chip (9) signal is exported again.
3, supervisory control system according to claim 1, it is characterized in that: the signal that detects (10) detected voltage and input voltage given (11) through input voltage is sent into comparator (7) simultaneously, result after comparison sends into CPLD (3), if the voltage that detects is not within given voltage range, after the analyzing and processing through CPLD (3), if exceeding the scope of given voltage is exactly overvoltage, there is corresponding overvoltage indicator light to show, if being lower than the scope of given voltage is exactly under voltage, there is corresponding under voltage indicator light to show.
4, supervisory control system according to claim 1, it is characterized in that: temperature detection (12) detects the temperature signal of power cell real work, buffer action through photoelectrical coupler (13), after will isolating, do not have interference signals to send into CPLD (3) and carry out analyzing and processing, if detected temperature signal is a normal signal, CPLD (3) will not have corresponding action, if detected temperature signal is improper signal, CPLD (3) will be exported control signal, drive supervisory pilot light (4) and show excess temperature, simultaneously alarm.
5, supervisory control system according to claim 1, it is characterized in that: the fault message of power cell, after the effect by photoelectric isolated chip (9), after the buffering of buffer circuit (8) to fault-signal, send into CPLD (3), CPLD (3) is by its powerful logical process function, fault-signal to input carries out analyzing and processing respectively, determine which kind of fault-signal fault-signal belongs to, simultaneously, drive corresponding supervisory pilot light (4), carry out fault and show; Meanwhile, system is divided into out four kinds of malfunctions, and output sends (5) through optical fiber, with representing two light signals of four kinds of fault-signals, sends into higher level's control system.
6, supervisory control system according to claim 5; it is characterized in that: in four kinds of malfunctions, only occur under the situation of heavy fault, bypass protection (2) sends control signal through CPLD (3); carry out the bypass action, defencive function comes into force.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 200510105775 CN1744419A (en) | 2005-09-29 | 2005-09-29 | Monitoring system for capcade multi-level high-voltage frequency transfomrer power unit |
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| CN 200510105775 CN1744419A (en) | 2005-09-29 | 2005-09-29 | Monitoring system for capcade multi-level high-voltage frequency transfomrer power unit |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101833037A (en) * | 2010-05-06 | 2010-09-15 | 广州智光电气股份有限公司 | Device and method for detecting input voltage phase of power unit of high voltage frequency converter |
| CN102064727A (en) * | 2011-01-06 | 2011-05-18 | 中铁建电气化局集团有限公司 | Multi-level power circuit control method and device |
| CN102457196A (en) * | 2011-12-22 | 2012-05-16 | 上海中发变频科技有限公司 | Power unit control plate of high-voltage frequency converter |
| CN102570401A (en) * | 2010-12-14 | 2012-07-11 | 富士电机株式会社 | Semiconductor element drive device |
| CN102570888A (en) * | 2011-12-14 | 2012-07-11 | 上海嘉翔自动化科技有限公司 | Current conversion unit control board for photovoltaic inverter |
| CN103677049A (en) * | 2013-12-02 | 2014-03-26 | 沈阳师范大学 | Multi-point-position automatic controller adjustable in voltage detection |
| CN104218777A (en) * | 2014-09-17 | 2014-12-17 | 国家电网公司 | Monitoring system of cascaded multilevel high-voltage inverter power unit |
| CN104409817A (en) * | 2014-12-06 | 2015-03-11 | 河南蓝海通信技术有限公司 | Combining device |
| CN105652852A (en) * | 2015-12-21 | 2016-06-08 | 长沙奥托自动化技术有限公司 | Detection and monitoring system of high-voltage frequency converter power unit and mainboard thereof |
| CN102570401B (en) * | 2010-12-14 | 2016-12-14 | 富士电机株式会社 | Semiconductor element drive device |
| CN107069670A (en) * | 2017-03-28 | 2017-08-18 | 中电普瑞科技有限公司 | A kind of H bridges change of current module protection circuit and three-phase H bridge cascade converters |
| CN108923388A (en) * | 2018-08-17 | 2018-11-30 | 东菱技术有限公司 | A kind of fault detection circuit powering on buffer cell and method |
| CN109560870A (en) * | 2017-09-25 | 2019-04-02 | 台达电子企业管理（上海）有限公司 | Communication system for cascade connection type power conversion apparatus |
| CN110567740A (en) * | 2019-07-31 | 2019-12-13 | 邯郸钢铁集团有限责任公司 | operation method for searching and rapidly processing high-voltage variable-frequency starting fault according to time sequence |
-
2005
- 2005-09-29 CN CN 200510105775 patent/CN1744419A/en active Pending
Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101833037B (en) * | 2010-05-06 | 2012-04-11 | 广州智光电气股份有限公司 | Device and method for detecting input voltage phase of power unit of high voltage frequency converter |
| CN101833037A (en) * | 2010-05-06 | 2010-09-15 | 广州智光电气股份有限公司 | Device and method for detecting input voltage phase of power unit of high voltage frequency converter |
| CN102570401A (en) * | 2010-12-14 | 2012-07-11 | 富士电机株式会社 | Semiconductor element drive device |
| CN102570401B (en) * | 2010-12-14 | 2016-12-14 | 富士电机株式会社 | Semiconductor element drive device |
| CN102064727A (en) * | 2011-01-06 | 2011-05-18 | 中铁建电气化局集团有限公司 | Multi-level power circuit control method and device |
| CN102064727B (en) * | 2011-01-06 | 2012-12-26 | 中铁建电气化局集团有限公司 | Multi-level power circuit control method and device |
| CN102570888A (en) * | 2011-12-14 | 2012-07-11 | 上海嘉翔自动化科技有限公司 | Current conversion unit control board for photovoltaic inverter |
| CN102570888B (en) * | 2011-12-14 | 2014-08-06 | 上海嘉翔自动化科技有限公司 | Current conversion unit control board for photovoltaic inverter |
| CN102457196A (en) * | 2011-12-22 | 2012-05-16 | 上海中发变频科技有限公司 | Power unit control plate of high-voltage frequency converter |
| CN102457196B (en) * | 2011-12-22 | 2014-04-09 | 上海中发变频科技有限公司 | Power unit control plate of high-voltage frequency converter |
| CN103677049B (en) * | 2013-12-02 | 2015-06-24 | 沈阳师范大学 | Multi-point-position automatic controller adjustable in voltage detection |
| CN103677049A (en) * | 2013-12-02 | 2014-03-26 | 沈阳师范大学 | Multi-point-position automatic controller adjustable in voltage detection |
| CN104218777A (en) * | 2014-09-17 | 2014-12-17 | 国家电网公司 | Monitoring system of cascaded multilevel high-voltage inverter power unit |
| CN104409817A (en) * | 2014-12-06 | 2015-03-11 | 河南蓝海通信技术有限公司 | Combining device |
| CN104409817B (en) * | 2014-12-06 | 2017-02-22 | 河南蓝海通信技术有限公司 | Combining device |
| CN105652852A (en) * | 2015-12-21 | 2016-06-08 | 长沙奥托自动化技术有限公司 | Detection and monitoring system of high-voltage frequency converter power unit and mainboard thereof |
| CN107069670A (en) * | 2017-03-28 | 2017-08-18 | 中电普瑞科技有限公司 | A kind of H bridges change of current module protection circuit and three-phase H bridge cascade converters |
| CN109560870A (en) * | 2017-09-25 | 2019-04-02 | 台达电子企业管理（上海）有限公司 | Communication system for cascade connection type power conversion apparatus |
| CN108923388A (en) * | 2018-08-17 | 2018-11-30 | 东菱技术有限公司 | A kind of fault detection circuit powering on buffer cell and method |
| CN110567740A (en) * | 2019-07-31 | 2019-12-13 | 邯郸钢铁集团有限责任公司 | operation method for searching and rapidly processing high-voltage variable-frequency starting fault according to time sequence |
| CN110567740B (en) * | 2019-07-31 | 2021-02-26 | 邯郸钢铁集团有限责任公司 | Operation method for searching and rapidly processing high-voltage variable-frequency starting fault according to time sequence |
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