CN106410646B - A kind of failure for handing over orthogonal high voltage converter quickly judges and processing operating method - Google Patents
A kind of failure for handing over orthogonal high voltage converter quickly judges and processing operating method Download PDFInfo
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- CN106410646B CN106410646B CN201610975594.7A CN201610975594A CN106410646B CN 106410646 B CN106410646 B CN 106410646B CN 201610975594 A CN201610975594 A CN 201610975594A CN 106410646 B CN106410646 B CN 106410646B
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- 238000011017 operating method Methods 0.000 title claims abstract description 11
- 238000012545 processing Methods 0.000 title claims abstract description 9
- 238000006243 chemical reaction Methods 0.000 claims abstract description 20
- 238000012423 maintenance Methods 0.000 claims abstract description 11
- 238000000034 method Methods 0.000 claims abstract description 7
- 230000008569 process Effects 0.000 claims abstract description 7
- 230000001360 synchronised effect Effects 0.000 claims abstract description 7
- 238000001816 cooling Methods 0.000 claims description 39
- 230000007246 mechanism Effects 0.000 claims description 26
- 230000008859 change Effects 0.000 claims description 24
- 230000005284 excitation Effects 0.000 claims description 17
- 238000012360 testing method Methods 0.000 claims description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 12
- 238000009413 insulation Methods 0.000 claims description 9
- 230000005611 electricity Effects 0.000 claims description 8
- 238000009826 distribution Methods 0.000 claims description 6
- 238000007689 inspection Methods 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000004891 communication Methods 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims description 3
- 239000012208 gear oil Substances 0.000 claims description 3
- 235000003642 hunger Nutrition 0.000 claims description 3
- 238000003825 pressing Methods 0.000 claims description 3
- 230000008439 repair process Effects 0.000 claims description 3
- 230000037351 starvation Effects 0.000 claims description 3
- 230000008901 benefit Effects 0.000 abstract description 2
- 230000015556 catabolic process Effects 0.000 abstract description 2
- 238000003672 processing method Methods 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000013461 design Methods 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
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- 230000004048 modification Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B3/00—Apparatus specially adapted for the manufacture, assembly, or maintenance of boards or switchgear
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Abstract
The invention discloses a kind of quick judgement of failure of friendship orthogonal high voltage converter and operating method is handled, including auxiliary equipment maintenance, the energized circuit of synchronous motor are overhauled, high-pressure frequency-conversion cabinet overhauls, high voltage converter service entrance switch overhauls, are handled the exceeded alert process of intake air temperature and changed power cell step.The invention provides a kind of breakdown judge of high voltage converter and processing method, and the failure of frequency converter is judged according to the different characteristics of start-up course, processing operation is carried out according to the type of failure, shortens the accident treatment time, create good economic benefit.
Description
Technical field
Quickly judge the present invention relates to a kind of failure of high voltage converter and handle operating method, more particularly to a kind of friendship
The failure of orthogonal high voltage converter quickly judges and processing operating method, belongs to the fault diagnosis technology field of high voltage converter.
Background technology
1,2,3,4, No. 5 high voltage converter is the nucleus equipment of main motor on factory's steel rolling line, their operation quality,
The yield of production line is directly affected, high current, the equipment of high-intensity magnetic field, is always operation dimension because high voltage converter is high voltage
Difficult point in shield, each failure, which needs to stop production to wait, causes very big production loss, therefore, maintenance and life according to oneself
The accident occurred in production, is summarized, so as to allow everybody to have a comparison clearly thinking to accident, according to high voltage variable
The characteristics of failure of frequency device, according to different time, difference feedback, summarize the judgement of failure and handle operating method, so as to pole
The big processing time for improving accident, equipment utilization rule is improved, ensure that production.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of failure for handing over orthogonal high voltage converter quickly to judge and handle
Operating method.
In order to solve the above technical problems, the technical solution adopted by the present invention is：
A kind of failure for handing over orthogonal high voltage converter quickly judges and processing operating method, comprises the following steps：
Step 1：Auxiliary equipment（7）Maintenance：It is made up of step by step following：
Step 1-1：Start the auxiliary equipment for handing over orthogonal high voltage converter（7）, judge to start auxiliary equipment（7）Whether can be just
Often work, if it is, turning to step 2；Otherwise, step 1-2 is turned to；
Step 1-2：Check whether water cooling unit works, if it is, turning to step 1-4；Otherwise, step 1-3 is turned to；
Step 1-3：Handle water cooling unit failure；Turn to step 1-2；
Step 1-4：Check whether the cooling blower that high-voltage motor (6) two is surveyed works, if it is, turning to step 1-8；It is no
Then, step 1-5 is turned to；
Step 1-5：Check whether the power switch of cooling blower trips, and whether contactor control loop is normal, if
It is to turn to step 1-6, otherwise turns to step 1-8；
Step 1-6：Cooling blower motor is detected with low pressure megger, if insulation is less than 0.5 megaohm, changes the cooling of damage
Blower motor；With low pressure megger detection cooling blower inlet wire insulating resistance of cable if cooling blower insulation is good, check into
Whether the insulation against ground of line cable is less than 0.5 megaohm, if turning to step 1-7；Otherwise step 1-8 is turned to；
Step 1-7：Change the inlet wire cable of cooling fan；
Step 1-8：Check whether the cooling fan in frequency conversion tank works, whether air quantity is normal, if turning to step 1,
Otherwise step 1-9 is turned to；
Step 1-9：Cooling fan in frequency conversion tank is changed, or checks whether air volume test element damages and wind in frequency conversion tank
Whether amount measure loop opens a way, and changes PT100 air volume test elements in time, recovers measuring loop；
Step 2：The energized circuit maintenance of synchronous motor, including step in detail below：
Step 2-1：Check whether the energized circuit of synchronous motor works, and whether field switch TCMLC closes；If
It is to turn to step 3, otherwise, turns to step 2-2；
Step 2-2：Check excitation service entrance switch on low-voltage distribution cabinet（1）Whether close, if it is, step 2-4 is turned to, it is no
Then, step 2-3 is turned to；
Step 2-3：Close excitation service entrance switch on low-voltage distribution cabinet（1）；Turn to step 2-1；
Step 2-4：Check whether switch acts in excitation cubicle, if it is, turning to step 2-6, otherwise, turn to step 2-5；
Step 2-5：The motor-operating mechanism of inspection switch and switch, whether the coil of motor-operating mechanism is short-circuit, opens
Road, whether mechanism connection piece is threaded off or is deformed, and the coil of replacement operation mechanism, corrects and recovers motor-operating mechanism
Mechanism in flakes, if Switch main body damages, be changed；
Step 2-6：Check excitation rectifier device（2）Whether work, if turning to step 2-8, otherwise turn to step 2-
7；
Step 2-7：Excitation rectifier device is overhauled, whether control power supply has electricity, and whether communication board work is normal, and card is
Whether no virtual connection or damage, cooling fan work, and whether have short circuit phenomenon, and whether inside insurance is changed because Damage by Short Circuit
Corresponding element；
Step 2-8：Check motor brush whether failure, if turn to step 2-9, otherwise go to step 2-10；
Step 2-9：Brush is changed, contact surface polish corresponding radian before replacing, once changes three no more than sum
/ mono-；
Step 2-10：Check whether motor sliding ring surface is good, if oxide-film is destroyed, to carry out grinding process, electricity
Whether brush brush holder loosens and is retightened, and whether slip ring wiring loosens and fastened；
Step 3：High-pressure frequency-conversion cabinet overhauls：Including step in detail below：
Step 3-1：Check whether high-pressure frequency-conversion cabinet enters line precharge：After 30 second charging interval, DC bus-bar voltage is observed
Whether reach 4800V, if it is, turning to step 4, otherwise turn to step 3-2；
Step 3-2：Operate high voltage converter to stop, high pressure inlet wire handcart is withdrawn into testing position, waits dc bus electricity
Press after less than 36V, to change pre-charge resistance, change preliminary filling insurance, eliminate all alarms；
Step 3-3：High pressure inlet wire handcart is advanced to running position, turns to step 1；
Step 4：High voltage converter service entrance switch overhauls：Including step in detail below：
Step 4-1：Check high-voltage wire inlet switch（3）Whether close a floodgate, if it is, step 5 is turned to, if not otherwise turning to
Step 4-2；
Step 4-2：Operate high voltage converter to stop, high pressure inlet wire handcart is withdrawn into testing position, checks that high-voltage handcart closes
Whether lock loop works, if it is, turning to step 4-4, otherwise turns to step 4-3；
Step 4-3：Change the fault element in high-voltage handcart closing coil loop；
Step 4-4：Check whether tank circuit works, if it is, turning to step 4-6, otherwise turn to step 4-5；
Step 4-5：Change the fault element in tank circuit；
Step 4-6：Check whether high-voltage switch gear divide-shut brake auxiliary contact feedback is normal, if it is, step 4-8 is turned to, it is no
Then turn to step 4-7；
Step 4-7：Change high-voltage switch gear divide-shut brake auxiliary contact；
Step 4-8：Check whether the motor-operating mechanism of high-voltage switch gear is good, if it is, turning to step 4-10, otherwise turn
To step 4-9；
Step 4-9：The operating mechanism of examination and repair for high-pressure switch, inspection operation mechanism powered part and mechanical part, electronic portion
Sub-coil whether open a way or short circuit, armature whether jam, whether pin comes off mechanical part, bearing damage, connecting rod deformation,
Gear oil starvation, change corresponding damage part；
Step 4-10：High pressure inlet wire handcart is advanced to running position, turns to step 1；
Step 5：Disconnecting switch under motor（5）Maintenance：Including step in detail below：
Step 5-1：Check disconnecting switch under motor（5）Handcart whether normally close a floodgate, it is no if it is, turn to step 5-3
Then, step 5-2 is turned to；
Step 5-2:Lower disconnecting switch（5）Handcart exit and change, the lower disconnecting switch after replacing（5）It is sent to
Running position；
Step 5-3：The lower disconnecting switch of operation（5）Close a floodgate；
Step 6：The exceeded alert process of intake air temperature：Including step in detail below：
Step 6-1：Judge whether to show the exceeded alarm of intake air temperature and shut down, if it is, turning to step 6-2；Otherwise,
Turn to step 6-3；
Step 6-2：Force F01K13 the or F01K23 relays inside pressing main transmission auxiliary switch board, time 1-
2 minutes, motor cooling fan contactor, motor radiating fan is set to work, alarm eliminates rear steering step 1；
Step 6-3：Confirm that high voltage converter stops, operation high pressure inlet wire handcart is withdrawn into testing position, waits 15 minutes
DC bus-bar voltage be less than 36V after, check frequency conversion tank internal power unit module whether alarm, whether judge high-voltage power unit
Damage, if it is, turning to step 6-4, otherwise turn to step 7；
Step 6-4：IGCT units are changed, IGCT water inlets and flowing water Valve is closed, opens joint, put below waterpipe jointing
Good water-accepting basin, prevents from metalling run out, and takes the dividing plate among cabinet door apart, controls power outage in IGCT power unit cabinets, extract on IGCT
4, triggering grating, dismantle triggering power supply terminal 8,4 foundation bolts of constant power unit, connected with busbar
Fixing bolt 2, the connecting bolt of 3 busbars 8,4, the bolt of output, the special Slide tool of both sides 2 is pacified respectively
It is attached to above IGCT, notices that each screw is gently hung up.Two exclusive guideways are separately inserted in Slide tool recited above
Face, both sides respectively fill one, are then fixed on by full dog point socket set above on cabinet, the bolt for fixing guide rail just now, two
Synchronously tightened before and after side, at this moment it can be seen that IGCT modules are slight from firm banking to lift 2-3MM, IGCT power cells
Pull out, be put on special lift truck, lifting lift truck, IGCT power cells is not stressed, pull down fixed IGCT power
Screw on the slideway of unit, IGCT is unloaded, turn to step 1；
Step 7：Terminate.
Using having technical effect that acquired by above-mentioned technical proposal：
The invention provides a kind of breakdown judge of high voltage converter and processing method, according to the different characteristics of start-up course
Judge the failure of frequency converter, processing operation is carried out according to the type of failure, shortens the accident treatment time, creates good warp
Ji benefit.
Brief description of the drawings
The present invention is further detailed explanation with reference to the accompanying drawings and detailed description.
Fig. 1 is the flow chart of the present invention；
Fig. 2 is the circuit theory diagrams for handing over orthogonal high voltage converter；
Wherein：1- excitation service entrance switch, 2- excitation rectifier devices, 3- high-voltage wire inlet switchs, 4- high-pressure frequency-conversion cabinets, under 5- every
Leave pass, 6- high-voltage motors, 7- auxiliary equipments.
Embodiment
Embodiment 1：
A kind of failure for handing over orthogonal high voltage converter quickly judges and processing operating method, comprises the following steps：
Step 1：Auxiliary equipment（7）Maintenance：It is made up of step by step following：
Step 1-1：Start the auxiliary equipment for handing over orthogonal high voltage converter（7）, judge to start auxiliary equipment（7）Whether can be just
Often work, if it is, turning to step 2；Otherwise, step 1-2 is turned to；
Step 1-2：Check whether water cooling unit works, if it is, turning to step 1-4；Otherwise, step 1-3 is turned to；
Step 1-3：Handle water cooling unit failure；Turn to step 1-2；
Step 1-4：Check whether the cooling blower that high-voltage motor (6) two is surveyed works, if it is, turning to step 1-8；It is no
Then, step 1-5 is turned to；
Step 1-5：Check whether the power switch of cooling blower trips, and whether contactor control loop is normal, if
It is to turn to step 1-6, otherwise turns to step 1-8；
Step 1-6：Cooling blower motor is detected with low pressure megger, if insulation is less than 0.5 megaohm, changes the cooling of damage
Blower motor；With low pressure megger detection cooling blower inlet wire insulating resistance of cable if cooling blower insulation is good, check into
Whether the insulation against ground of line cable is less than 0.5 megaohm, if turning to step 1-7；Otherwise step 1-8 is turned to；
Step 1-7：Change the inlet wire cable of cooling fan；
Step 1-8：Check whether the cooling fan in frequency conversion tank works, whether air quantity is normal, if turning to step 1,
Otherwise step 1-9 is turned to；
Step 1-9：Cooling fan in frequency conversion tank is changed, or checks whether air volume test element damages and wind in frequency conversion tank
Whether amount measure loop opens a way, and changes PT100 air volume test elements in time, recovers measuring loop；
Step 2：The energized circuit maintenance of synchronous motor, including step in detail below：
Step 2-1：Check whether the energized circuit of synchronous motor works, and whether field switch TCMLC closes；If
It is to turn to step 3, otherwise, turns to step 2-2；
Step 2-2：Check excitation service entrance switch on low-voltage distribution cabinet（1）Whether close, if it is, step 2-4 is turned to, it is no
Then, step 2-3 is turned to；
Step 2-3：Close excitation service entrance switch on low-voltage distribution cabinet（1）；Turn to step 2-1；
Step 2-4：Check whether switch acts in excitation cubicle, if it is, turning to step 2-6, otherwise, turn to step 2-5；
Step 2-5：The motor-operating mechanism of inspection switch and switch, whether the coil of motor-operating mechanism is short-circuit, opens
Road, whether mechanism connection piece is threaded off or is deformed, and the coil of replacement operation mechanism, corrects and recovers motor-operating mechanism
Mechanism in flakes, if Switch main body damages, be changed；
Step 2-6：Check excitation rectifier device（2）Whether work, if turning to step 2-8, otherwise turn to step 2-
7；
Step 2-7：Excitation rectifier device is overhauled, whether control power supply has electricity, and whether communication board work is normal, and card is
Whether no virtual connection or damage, cooling fan work, and whether have short circuit phenomenon, and whether inside insurance is changed because Damage by Short Circuit
Corresponding element；
Step 2-8：Check motor brush whether failure, if turn to step 2-9, otherwise go to step 2-10；
Step 2-9：Brush is changed, contact surface polish corresponding radian before replacing, once changes three no more than sum
/ mono-；
Step 2-10：Check whether motor sliding ring surface is good, if oxide-film is destroyed, to carry out grinding process, electricity
Whether brush brush holder loosens and is retightened, and whether slip ring wiring loosens and fastened；
Step 3：High-pressure frequency-conversion cabinet overhauls：Including step in detail below：
Step 3-1：Check whether high-pressure frequency-conversion cabinet enters line precharge：After 30 second charging interval, DC bus-bar voltage is observed
Whether reach 4800V, if it is, turning to step 4, otherwise turn to step 3-2；
Step 3-2：Operate high voltage converter to stop, high pressure inlet wire handcart is withdrawn into testing position, waits dc bus electricity
Press after less than 36V, to change pre-charge resistance, change preliminary filling insurance, eliminate all alarms；
Step 3-3：High pressure inlet wire handcart is advanced to running position, turns to step 1；
Step 4：High voltage converter service entrance switch overhauls：Including step in detail below：
Step 4-1：Check high-voltage wire inlet switch（3）Whether close a floodgate, if it is, step 5 is turned to, if not otherwise turning to
Step 4-2；
Step 4-2：Operate high voltage converter to stop, high pressure inlet wire handcart is withdrawn into testing position, checks that high-voltage handcart closes
Whether lock loop works, if it is, turning to step 4-4, otherwise turns to step 4-3；
Step 4-3：Change the fault element in high-voltage handcart closing coil；
Step 4-4：Check whether tank circuit works, if it is, turning to step 4-6, otherwise turn to step 4-5；
Step 4-5：Change the fault element in tank circuit；
Step 4-6：Check whether high-voltage switch gear divide-shut brake auxiliary contact feedback is normal, if it is, step 4-8 is turned to, it is no
Then turn to step 4-7；
Step 4-7：Change high-voltage switch gear divide-shut brake auxiliary contact；
Step 4-8：Check whether the motor-operating mechanism of high-voltage switch gear is good, if it is, turning to step 4-10, otherwise turn
To step 4-9；
Step 4-9：The operating mechanism of examination and repair for high-pressure switch, inspection operation mechanism powered part and mechanical part, electronic portion
Sub-coil whether open a way or short circuit, armature whether jam, whether pin comes off mechanical part, bearing damage, connecting rod deformation,
Gear oil starvation, change corresponding damage part；
Step 4-10：High pressure inlet wire handcart is advanced to running position, turns to step 1；
Step 5：Disconnecting switch under motor（5）Maintenance：Including step in detail below：
Step 5-1：Check disconnecting switch under motor（5）Handcart whether normally close a floodgate, it is no if it is, turn to step 5-3
Then, step 5-2 is turned to；
Step 5-2:Lower disconnecting switch（5）Handcart exit and change, the lower disconnecting switch after replacing（5）It is sent to
Running position；
Step 5-3：The lower disconnecting switch of operation（5）Close a floodgate；
Step 6：The exceeded alert process of intake air temperature：Including step in detail below：
Step 6-1：Judge whether to show the exceeded alarm of intake air temperature and shut down, if it is, turning to step 6-2；Otherwise,
Turn to step 6-3；
Step 6-2：Force F01K13 the or F01K23 relays inside pressing main transmission auxiliary switch board, time 1-
2 minutes, motor cooling fan contactor, motor radiating fan is set to work, alarm eliminates rear steering step 1；
Step 6-3：Confirm that high voltage converter stops, operation high pressure inlet wire handcart is withdrawn into testing position, waits 15 minutes
DC bus-bar voltage be less than 36V after, check frequency conversion tank internal power unit module whether alarm, whether judge high-voltage power unit
Damage, if it is, turning to step 6-4, otherwise turn to step 7；
Step 6-4：IGCT units are changed, IGCT water inlets and flowing water Valve is closed, opens joint, put below waterpipe jointing
Good water-accepting basin, prevents from metalling run out, and takes the dividing plate among cabinet door apart, controls power outage in IGCT power unit cabinets, extract on IGCT
4, triggering grating, dismantle triggering power supply terminal 8,4 foundation bolts of constant power unit, connected with busbar
Fixing bolt 2, the connecting bolt of 3 busbars 8,4, the bolt of output, the special Slide tool of both sides 2 is pacified respectively
It is attached to above IGCT, notices that each screw is gently hung up.Two exclusive guideways are separately inserted in Slide tool recited above
Face, both sides respectively fill one, are then fixed on by full dog point socket set above on cabinet, the bolt for fixing guide rail just now, two
Synchronously tightened before and after side, at this moment it can be seen that IGCT modules are slight from firm banking to lift 2-3MM, IGCT power cells
Pull out, be put on special lift truck, lifting lift truck, IGCT power cells is not stressed, pull down fixed IGCT power
Screw on the slideway of unit, IGCT is unloaded, turn to step 1；
Step 7：Terminate.
According to this operating method, can be calculated in 12 hours off-times of reduction whole year, i.e., 0.5 day, caused by reduction
Loss：* 0.5=2000 tons of daily yield 4000 ton, 200 yuan of ton steel profit.Loss of income reduces 400,000 yuan.
The above-described embodiments are merely illustrative of preferred embodiments of the present invention, not to the structure of the present invention
Think and scope is defined.On the premise of design concept of the present invention is not departed from, technology of the ordinary people in the field to the present invention
The all variations and modifications that scheme is made, protection scope of the present invention all should be dropped into.
Claims (1)
1. a kind of failure for handing over orthogonal high voltage converter quickly judges and processing operating method, it is characterised in that：Including following step
Suddenly：
Step 1：Auxiliary equipment（7）Maintenance：It is made up of step by step following：
Step 1-1：Start the auxiliary equipment for handing over orthogonal high voltage converter（7）, judge to start auxiliary equipment（7）Whether can normal work
Make, if it is, turning to step 2；Otherwise, step 1-2 is turned to；
Step 1-2：Check whether water cooling unit works, if it is, turning to step 1-4；Otherwise, step 1-3 is turned to；
Step 1-3：Handle water cooling unit failure；Turn to step 1-2；
Step 1-4：Check whether the cooling blower of high-voltage motor (6) both sides works, if it is, turning to step 1-8；Otherwise, turn
To step 1-5；
Step 1-5：Check whether the power switch of cooling blower trips, and whether contactor control loop is normal, if it is, turning
To step 1-6, step 1-8 is otherwise turned to；
Step 1-6：Cooling blower motor is detected with low pressure megger, if insulation is less than 0.5 megaohm, changes the cooling blower of damage
Motor；With low pressure megger detection cooling blower inlet wire insulating resistance of cable if cooling blower insulation is good, inlet wire electricity is checked
Whether cable insulation against ground is less than 0.5 megaohm, if turning to step 1-7；Otherwise step 1-8 is turned to；
Step 1-7：Change the inlet wire cable of cooling fan；
Step 1-8：Check whether the cooling fan in frequency conversion tank works, whether air quantity is normal, if turning to step 1, otherwise
Turn to step 1-9；
Step 1-9：Cooling fan in frequency conversion tank is changed, or checks whether air volume test element is damaged in frequency conversion tank and air quantity is examined
Survey time, whether road opened a way, and changes PT100 air volume test elements in time, recovers measuring loop；
Step 2：The energized circuit maintenance of synchronous motor, including step in detail below：
Step 2-1：Check whether the energized circuit of synchronous motor works, and whether field switch TCMLC closes；If it is, turn
To step 3, otherwise, step 2-2 is turned to；
Step 2-2：Check excitation service entrance switch on low-voltage distribution cabinet（1）Whether close, if it is, step 2-4 is turned to, otherwise,
Turn to step 2-3；
Step 2-3：Close excitation service entrance switch on low-voltage distribution cabinet（1）；Turn to step 2-1；
Step 2-4：Check whether switch acts in excitation cubicle, if it is, turning to step 2-6, otherwise, turn to step 2-5；
Step 2-5：The motor-operating mechanism of inspection switch and switch, whether the coil of motor-operating mechanism is short-circuit, open circuit, machine
Whether structure connection piece is threaded off or is deformed, and the coil of replacement operation mechanism, corrects and recovers the mechanism of motor-operating mechanism
In flakes, if Switch main body damages, to be changed；
Step 2-6：Check excitation rectifier device（2）Whether work, if turning to step 2-8, otherwise turn to step 2-7；
Step 2-7：Excitation rectifier device is overhauled, whether control power supply has electricity, and whether communication board work is normal, and whether card is empty
Connect or damage, whether cooling fan works, and whether has short circuit phenomenon, and whether inside insurance is changed corresponding because Damage by Short Circuit
Element；
Step 2-8：Check motor brush whether failure, if turn to step 2-9, otherwise go to step 2-10；
Step 2-9：Change brush, contact surface polish corresponding radian before replacing, once change no more than sum three/
One；
Step 2-10：Check whether motor sliding ring surface is good, if oxide-film is destroyed, to carry out grinding process, brush brush
Whether frame loosens and is retightened, and whether slip ring wiring loosens and fastened；
Step 3：High-pressure frequency-conversion cabinet overhauls：Including step in detail below：
Step 3-1：Check whether high-pressure frequency-conversion cabinet enters line precharge：After 30 second charging interval, whether observation DC bus-bar voltage
Reach 4800V, if it is, turning to step 4, otherwise turn to step 3-2；
Step 3-2：Operate high voltage converter to stop, high pressure inlet wire handcart is withdrawn into testing position, and wait DC bus-bar voltage is
After 36V, pre-charge resistance is changed, preliminary filling insurance is changed, eliminates all alarms；
Step 3-3：High pressure inlet wire handcart is advanced to running position, turns to step 1；
Step 4：High voltage converter service entrance switch overhauls：Including step in detail below：
Step 4-1：Check high-voltage wire inlet switch（3）Whether close a floodgate, if it is, step 5 is turned to, if not otherwise turning to step
4-2；
Step 4-2：Operate high voltage converter to stop, high pressure inlet wire handcart is withdrawn into testing position, checks that high-voltage handcart closes a floodgate back
Whether road works, if it is, turning to step 4-4, otherwise turns to step 4-3；
Step 4-3：Change the fault element in high-voltage handcart closing circuit；
Step 4-4：Check whether tank circuit works, if it is, turning to step 4-6, otherwise turn to step 4-5；
Step 4-5：Change the fault element in tank circuit；
Step 4-6：Check whether high-voltage switch gear divide-shut brake auxiliary contact feedback is normal, if it is, turning to step 4-8, otherwise turns
To step 4-7；
Step 4-7：Change high-voltage switch gear divide-shut brake auxiliary contact；
Step 4-8：Check whether the motor-operating mechanism of high-voltage switch gear is good, if it is, turning to step 4-10, otherwise turn to step
Rapid 4-9；
Step 4-9：The operating mechanism of examination and repair for high-pressure switch, inspection operation mechanism powered part and mechanical part, powered part line
Circle whether open a way or short circuit, armature whether jam, whether pin comes off mechanical part, bearing damage, connecting rod deformation, gear
Oil starvation, change corresponding damage part；
Step 4-10：High pressure inlet wire handcart is advanced to running position, turns to step 1；
Step 5：Disconnecting switch under motor（5）Maintenance：Including step in detail below：
Step 5-1：Check disconnecting switch under motor（5）Handcart whether normally close a floodgate, if it is, turn to step 5-3, otherwise,
Turn to step 5-2；
Step 5-2:Lower disconnecting switch（5）Handcart exit and change, the lower disconnecting switch after replacing（5）It is sent to operation
Position；
Step 5-3：The lower disconnecting switch of operation（5）Close a floodgate；
Step 6：The exceeded alert process of intake air temperature：Including step in detail below：
Step 6-1：Judge whether to show the exceeded alarm of intake air temperature and shut down, if it is, turning to step 6-2；Otherwise, turn to
Step 6-3；
Step 6-2：F01K13 the or F01K23 relays inside pressing main transmission auxiliary switch board are forced, the time is 1-2 points
Clock, motor cooling fan contactor, makes motor radiating fan work, and alarm eliminates rear steering step 1；
Step 6-3：Confirm that high voltage converter stops, operation high pressure inlet wire handcart is withdrawn into testing position, waits 15 minutes direct currents
Busbar voltage be less than 36V after, check frequency conversion tank internal power unit module whether alarm, judge whether high-voltage power unit damages
It is bad, if it is, turning to step 6-4, otherwise turn to step 7；
Step 6-4：IGCT units are changed, IGCT water inlets and flowing water Valve is closed, opens joint, put well and connect below waterpipe jointing
Basin, prevent from metalling run out, take the dividing plate among cabinet door apart, power outage is controlled in IGCT power unit cabinets, extract touching on IGCT
Luminous grid 4, triggering power supply terminal 8 of dismantling, 4 foundation bolts of constant power unit, the fixation connected with busbar
2, bolt, the connecting bolt of 3 busbars 8,4, the bolt of output, the special Slide tool of both sides 2 is respectively installed to
Above IGCT, notice that each screw is gently hung up, two exclusive guideways are separately inserted inside Slide tool recited above, two
Side respectively fills one, is then fixed on by full dog point socket set above on cabinet, the bolt for fixing guide rail just now, before and after both sides
Synchronously tighten, at this moment it can be seen that IGCT modules are slight from firm banking to lift 2-3MM, IGCT power cells are pulled outwardly
Go out, be put on special lift truck, lifting lift truck, IGCT power cells is not stressed, pull down fixed IGCT power cells
Screw on slideway, IGCT is unloaded, turn to step 1；
Step 7：Terminate.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109541337A (en) * | 2018-10-16 | 2019-03-29 | 苏州汇川技术有限公司 | Frequency converter failure detection method, system, equipment and computer readable storage medium |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
| CN113701809B (en) * | 2021-08-20 | 2024-04-09 | 株洲华梁电气有限公司 | IGCT crimping test device |
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