CN104135143A - Fault removal operating method for high-voltage frequency converter - Google Patents
Fault removal operating method for high-voltage frequency converter Download PDFInfo
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- CN104135143A CN104135143A CN201410369954.XA CN201410369954A CN104135143A CN 104135143 A CN104135143 A CN 104135143A CN 201410369954 A CN201410369954 A CN 201410369954A CN 104135143 A CN104135143 A CN 104135143A
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Abstract
The invention discloses a fault removal operating method for a high-voltage frequency converter. The method comprises the steps that when the high-voltage frequency converter can not be started after being powered on, whether an operation power source switch of the high-voltage frequency converter is connected or not is checked, whether a UPS is connected within an interval of a controller of the high-voltage frequency converter or not is checked, if the operation power source switch and the UPS are not connected, the operation power source switch and the UPS are connected, and the system resets after a fault of the high-voltage frequency converter is removed; when a light fault alarm is given, whether the light fault alarm is the cabinet door interlocking alarm or the transformer over-temperature alarm or not is checked; after the fault is removed, a fault indicator light should be turned off; when a heavy fault alarm is given, whether the heavy fault is a power unit optical fiber fault or a power unit overvoltage fault or a high-voltage frequency converter overcurrent fault or not is checked, the system resets after the fault is removed, and the high-voltage frequency converter is restarted. By the application of the fault removal operating method, the fault processing time is greatly shortened and the utilization rate of the high-voltage frequency converter is improved.
Description
Technical field
The present invention relates to a kind of high voltage converter technology, specifically, relate to a kind of high voltage converter fault and get rid of method of operation.
Background technology
8# stove first, second forced draft fan high voltage converter is as one of our factory Energy-saving Projects, and operation has had 15 months, has produced considerable economic benefit, nearly 900,000 yuan of power cost saving.But its failure rate also can not be ignored, it will directly affect the economic benefit of our factory.Therefore how to extend to greatest extent the high voltage converter cycle of operation, get rid of fast high voltage converter most common failure and just seem particularly important.
Since the operation of 8# stove first, second forced draft fan high voltage converter, break down altogether 19 times, wherein power cell fiber failure 12 times, power cell overvoltage fault 5 times, high voltage converter overcurrent 2 times.
As can be seen from the above data: power cell fiber failure incidence is the highest, be secondly power cell overvoltage fault.Because specification is not in conjunction with on-the-spot actual, and fault is irregular follows, so high voltage converter is had no way of doing it after breaking down, troubleshooting gets up to waste time and energy.
Summary of the invention
Technical problem solved by the invention is to provide a kind of high voltage converter fault and gets rid of method of operation, has greatly shortened fault handling time, has improved the utilance of high voltage converter.
Technical scheme is as follows:
A kind of high voltage converter fault is got rid of method of operation, comprising:
In the time occurring can not starting to fault after high voltage converter power transmission, whether the operating power switch that checks high voltage converter drops into, check in high-voltage frequency converter controller interval, whether uninterrupted power supply UPS drops into, if the said equipment does not drop into, access the said equipment, high voltage converter fault get rid of after by system reset;
In the time occurring that light fault is reported to the police, check whether cabinet gate interlock is reported to the police or transformer overtemperature alarm; After fault is got rid of, malfunction indicator lamp should be extinguished;
In the time there is heavy fault alarm, whether check power cell fiber failure, power cell overvoltage fault or high voltage converter overcurrent, fault get rid of after by system reset, restart high voltage converter.
Further, the processing procedure that cabinet gate interlock is reported to the police comprises: check alarm content by man-machine interface, check whether all cabinet doors close to put in place, whether travel switch is working properly; After fault is got rid of, malfunction indicator lamp should be extinguished.
Further, the processing procedure of transformer overtemperature alarm comprises: in the time that transformer temperature controller measurement temperature is greater than the alarm temperature of its setting, the temperature controller overtemperature alarm closing of contact, checks alarm content by man-machine interface; Check transformer case against the wind machine or whether cabinet bottom side hair-dryer working properly, whether screen pack stops up, whether long-term work, transformer case air-blower control power supply whether too high in overload, ambient temperature and protective circuit whether normal; After fault is got rid of, malfunction indicator lamp should be extinguished.
Further, in the time of emergent power unit fiber failure, check alarm content by man-machine interface, be switched to failure logging screen and check cell failure record; According to fault Content inspection fault power unit optical fiber head, whether because dust contact is bad, whether fiber-optic signal sending/receiving device inside piles up dust, and whether optical fiber fractures or damage; After troubleshooting, by system reset, restart high voltage converter.
Further, if can not start by high voltage converter, should check or corresponding fibre optic plate or change fault power unit on changer controller more.
Further, in the time of emergent power unit overvoltage fault, check alarm content by man-machine interface; Check whether the fluctuation of high voltage converter input voltage forward exceedes permissible value; Switch in input and outlet chamber by man-machine interface, and show current given and state of a control, check that input voltage is whether in prescribed limit; If high voltage converter overvoltage while slowing down strengthens set point deceleration time of high voltage converter; After fault eliminating, by system reset, restart high voltage converter.
Further, if high voltage converter still can not start, check fault power unit or replacing.
Further, in the time there is high voltage converter overcurrent, check alarm content by man-machine interface; High voltage converter output current exceedes motor rated current 200% and trips, and should check whether motor and mechanical part go wrong; Check that parameter arranges the size of accelerating time, if be less than set point, be switched to parameter by man-machine boundary screen is set, suitably increase accelerating time value; Be switched to current given and state of a control by man-machine interface, check that whether input voltage is too low, whether in prescribed limit; Check whether high voltage converter output unit exists short circuit phenomenon, check that in high voltage converter output unit, whether replacing power switch component is breakdown, if breakdown, change; Check and drive testing circuit whether to damage, drive testing circuit if damage to change; After fault eliminating, by system reset, restart high voltage converter.
Compared with prior art, the technology of the present invention effect comprises:
1, the present invention can produce considerable ground economic benefit.
The present invention can shorten the fault handling time of high voltage converter, with 8# stove first forced draft fan high voltage converter energy saving calculation:
Device name: 8# stove first forced draft fan rated power: 560KW
Rated voltage: 6KV rated current: 64.5A
Rated power factor: 0.876 actual current: 27A
Device name: 8# stove first forced draft fan high voltage converter
Input voltage: 6218V output voltage: 4136V
Input current: 12A output current: 25.5A
Input power: 126.4KW power output: 126.4KW
Given frequency: 34.03HZ running frequency: 34.03HZ
Accumulated running time: 11842 hours
Before frequency conversion, use power P 1=(actual current)/(rated current) × (rated power)=27/64.5 × 560=234.4KW
After frequency conversion, using power: P2 is that high voltage converter input power is P2=126.4KW
Power saving rate η=(P1-P2)/P1=46%
Year, amount of electricity saving W was: W=(P1-P2) × 11842 hour=1278936KW
With 0.36 yuan of calculating of every degree electricity, Spring Festival holidays are economized ten thousand yuan of electricity charge W × 0.36=46
Economize on electricity per hour: (234.4-126.4) × 0.36=38.8 unit
As can be seen from the above data, shorten the fault handling time of 8# stove forced draft fan high voltage converter, 38.8 yuan of the benefits of creating per hour, one day is exactly nearly 1,000 yuan.By the heavy fault of this method coprocessing 12 times, nearly 50,000 yuan of wound benefit.
2, the occurrence frequency that has effectively reduced high voltage converter Common Accidents, has improved the ability of the stable operation of high voltage converter.
By in real work of the present invention, through having obtained obvious effect the running time of half a year, by original wait manufacturer after sale personnel process, be generally three to five days, fault handling time is 15 minutes till now, has greatly shortened fault handling time, has created considerable economic benefit, improve the utilance of high voltage converter, for condition has been created in energy-saving and cost-reducing work.
Embodiment
The fault that the present invention has occurred since moving by high voltage converter has carried out analyzing refinement, pass through practice summary, high voltage converter most common failure is analyzed, obtained a set of cost-effective high voltage converter Common Failures and high voltage converter and safeguard way.High voltage converter most common failure comprises three kinds of situations, can not start, light fault is reported to the police, heavy fault alarm after high voltage converter power transmission, gets rid of method of operation below to getting rid of three kinds of faults, process is elaborated according to high voltage converter fault.
1, after high voltage converter power transmission, can not start.
(1) whether the operating power switch that checks high voltage converter drops into, and checks in high-voltage frequency converter controller interval, whether UPS drops into; Pay particular attention to: after uninterrupted power supply (uninterruptible power system, UPS) power-off, because battery is powered for a long time, can cause battery electric quantity to exhaust and automatic shutdown.So, cannot get up after meeting high voltage converter power transmission, should check this.
(2) if the said equipment does not drop into, access the said equipment, high voltage converter fault get rid of after by system reset.
System reset pad: for the system failure restart and high-pressure frequency-conversion think highly of fault get rid of after the use of reset.
2, light fault is reported to the police and is processed.
(1) processing of cabinet gate interlock warning (cabinet door is opened and reported to the police);
A, check alarm content by man-machine interface;
B, check whether all cabinet doors close and put in place, whether travel switch is working properly;
After c, fault are got rid of, malfunction indicator lamp should be extinguished.
This fault occurs more frequent, is shown as the flicker of high voltage converter trouble light and boiler computer operation interface light fault and reports to the police.
(2) processing of transformer overtemperature alarm;
In the time that transformer temperature controller measurement temperature is greater than the alarm temperature (default setting is 130 DEG C) of its setting, the temperature controller overtemperature alarm closing of contact.
A, check alarm content by man-machine interface;
B, check transformer case machine or whether cabinet bottom side hair-dryer is working properly, whether screen pack stops up, whether whether long-term work is normal in overload, ambient temperature whether too high (ambient temperature should be lower than 45 DEG C, otherwise air channel or industrial air-conditioning should be installed), transformer case air-blower control power supply and protective circuit against the wind;
Transformer bottom has 6 blower fans, and front and back respectively have 3, for transformer ventilation and heat, contributes to reduce transformer operating temperature.
The effect of screen pack is: in the process of high voltage converter ventilation and heat, in filter chamber and airborne dust to clean the effect of transformer and power cell.
After c, fault are got rid of, malfunction indicator lamp should be extinguished.
3, heavy fault alarm and processing.
(1) processing of power cell fiber failure;
A, check alarm content by man-machine interface;
Be switched to failure logging screen and check cell failure record.
B, according to fault Content inspection fault power unit optical fiber head whether because dust contact is bad, whether fiber-optic signal sending/receiving device inside piles up dust, whether optical fiber fractures or damages;
The effect of optical fiber head: with the mutual communication of fibre optic plate in controller, transmission data.
After c, troubleshooting by system reset;
D, restart high voltage converter;
If e still can not start by above handle high voltages frequency converter, should check or corresponding fibre optic plate on changer controller more, or change fault power unit.
(2) processing of power cell overvoltage fault;
A, check alarm content by man-machine interface;
B, check whether the fluctuation of high voltage converter input voltage forward exceedes permissible value, Gao Buying exceedes 6500 volts;
Switch in input and outlet chamber by man-machine interface, and show current given and state of a control, check that input voltage is whether in prescribed limit, set point is 6000 volts (scopes should between 5500～6500 volts).
C is if high voltage converter overvoltage while slowing down can suitably strengthen set point deceleration time of high voltage converter;
Be switched to parameter by man-machine interface screen is set, suitably increase value deceleration time.
After d, fault eliminating, by system reset, restart high voltage converter;
If f by above step after high voltage converter still can not start, should check fault power unit or replacing.
(3) processing of high voltage converter overcurrent;
A, check alarm content by man-machine interface;
B, high voltage converter output current exceed motor rated current 200% and trip, and should check whether motor and mechanical part go wrong;
C, checking parameter, whether the accelerating time is set too little, and set point is 90 seconds (scope should between 80～120 seconds);
Be switched to parameter by man-machine boundary screen is set, suitably increase accelerating time value.
D, check supply voltage whether too low, minimum should be lower than 5500 volts;
Be switched to current given and state of a control by man-machine interface, check that whether input voltage is too low, whether in prescribed limit (between 5500～6500 volts).
Whether e, inspection high voltage converter output unit there is short circuit phenomenon;
F, check high voltage transducer power unit internal power switch element (IGBT) whether breakdown, need if breakdown change;
Whether g, inspection drive testing circuit to damage, and need to change if damaged.
After h, fault eliminating, by system reset, restart high voltage converter.
Claims (8)
1. high voltage converter fault is got rid of a method of operation, comprising:
In the time occurring can not starting to fault after high voltage converter power transmission, whether the operating power switch that checks high voltage converter drops into, check in high-voltage frequency converter controller interval, whether uninterrupted power supply UPS drops into, if the said equipment does not drop into, access the said equipment, high voltage converter fault get rid of after by system reset;
In the time occurring that light fault is reported to the police, check whether cabinet gate interlock is reported to the police or transformer overtemperature alarm; After fault is got rid of, malfunction indicator lamp should be extinguished;
In the time there is heavy fault alarm, whether check power cell fiber failure, power cell overvoltage fault or high voltage converter overcurrent, fault get rid of after by system reset, restart high voltage converter.
2. high voltage converter fault is got rid of method of operation as claimed in claim 1, it is characterized in that, the processing procedure that cabinet gate interlock is reported to the police comprises: check alarm content by man-machine interface, check whether all cabinet doors close to put in place, whether travel switch is working properly; After fault is got rid of, malfunction indicator lamp should be extinguished.
3. high voltage converter fault is got rid of method of operation as claimed in claim 1, it is characterized in that, the processing procedure of transformer overtemperature alarm comprises: in the time that transformer temperature controller measurement temperature is greater than the alarm temperature of its setting, the temperature controller overtemperature alarm closing of contact, checks alarm content by man-machine interface; Check transformer case against the wind machine or whether cabinet bottom side hair-dryer working properly, whether screen pack stops up, whether long-term work, transformer case air-blower control power supply whether too high in overload, ambient temperature and protective circuit whether normal; After fault is got rid of, malfunction indicator lamp should be extinguished.
4. high voltage converter fault is got rid of method of operation as claimed in claim 1, it is characterized in that, in the time of emergent power unit fiber failure, checks alarm content by man-machine interface, is switched to failure logging screen and checks cell failure record; According to fault Content inspection fault power unit optical fiber head, whether because dust contact is bad, whether fiber-optic signal sending/receiving device inside piles up dust, and whether optical fiber fractures or damage; After troubleshooting, by system reset, restart high voltage converter.
5. high voltage converter fault is got rid of method of operation as claimed in claim 4, it is characterized in that, if can not start by high voltage converter, should check or corresponding fibre optic plate or change fault power unit on changer controller more.
6. high voltage converter fault is got rid of method of operation as claimed in claim 1, it is characterized in that, in the time of emergent power unit overvoltage fault, checks alarm content by man-machine interface; Check whether the fluctuation of high voltage converter input voltage forward exceedes permissible value; Switch in input and outlet chamber by man-machine interface, and show current given and state of a control, check that input voltage is whether in prescribed limit; If high voltage converter overvoltage while slowing down strengthens set point deceleration time of high voltage converter; After fault eliminating, by system reset, restart high voltage converter.
7. high voltage converter fault is got rid of method of operation as claimed in claim 6, it is characterized in that, if high voltage converter still can not start, checks fault power unit or replacing.
8. high voltage converter fault is got rid of method of operation as claimed in claim 1, it is characterized in that, in the time there is high voltage converter overcurrent, checks alarm content by man-machine interface; High voltage converter output current exceedes motor rated current 200% and trips, and should check whether motor and mechanical part go wrong; Check that parameter arranges the size of accelerating time, if be less than set point, be switched to parameter by man-machine boundary screen is set, suitably increase accelerating time value; Be switched to current given and state of a control by man-machine interface, check that whether input voltage is too low, whether in prescribed limit; Check whether high voltage converter output unit exists short circuit phenomenon, check that in high voltage converter output unit, whether replacing power switch component is breakdown, if breakdown, change; Check and drive testing circuit whether to damage, drive testing circuit if damage to change; After fault eliminating, by system reset, restart high voltage converter.
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| CN201410369954.XA CN104135143A (en) | 2014-07-25 | 2014-07-25 | Fault removal operating method for high-voltage frequency converter |
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| CN107942153A (en) * | 2017-03-31 | 2018-04-20 | 大唐三门峡发电有限责任公司 | The lookup method of Li Dehuafu frequency converter failures |
| 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 |
| CN112268637A (en) * | 2020-09-23 | 2021-01-26 | 北京首钢自动化信息技术有限公司 | Temperature fault early warning device for frequency conversion equipment |
| CN112924797A (en) * | 2021-02-07 | 2021-06-08 | 东方日立(成都)电控设备有限公司 | Fault positioning method and system for high-voltage frequency conversion system |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| 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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| CN112924797A (en) * | 2021-02-07 | 2021-06-08 | 东方日立(成都)电控设备有限公司 | Fault positioning method and system for high-voltage frequency conversion system |
| CN112924797B (en) * | 2021-02-07 | 2023-02-10 | 东方日立(成都)电控设备有限公司 | Fault positioning method and system for high-voltage frequency conversion system |
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Application publication date: 20141105 |