CN110514911A - A kind of system and method for power plant high voltage bus power supply nuclear phase - Google Patents
A kind of system and method for power plant high voltage bus power supply nuclear phase Download PDFInfo
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- CN110514911A CN110514911A CN201910804493.7A CN201910804493A CN110514911A CN 110514911 A CN110514911 A CN 110514911A CN 201910804493 A CN201910804493 A CN 201910804493A CN 110514911 A CN110514911 A CN 110514911A
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- G—PHYSICS
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- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
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- G01R29/18—Indicating phase sequence; Indicating synchronism
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Abstract
The invention discloses a kind of system and methods of power plant high voltage bus power supply nuclear phase, including working power unit, generator breaker unit, working power common box bus, working power inlet wire is flexible coupling, working power incoming switch, working power primary voltage mutual inductor, standby power unit, backup power source common box bus, backup power source inlet wire is flexible coupling, backup power source incoming switch, backup power source primary voltage mutual inductor, high voltage bus voltage transformer and high voltage bus, the system and method can be realized high voltage bus power supply nuclear phase, and safety and reliability are higher.
Description
Technical field
The invention belongs to electric power debugging and power test technical fields, are related to a kind of power plant high voltage bus power supply nuclear phase
System and method.
Background technique
The need that 6kV 10kV high-voltage auxiliary bus meets station-service high voltage load are usually arranged in power plant and large-scale factories and miness
It wants.Two-way power supply power supply is arranged in usual high voltage bus, and working power inlet wire is derived from high-voltage Auxiliary by working power incoming switch
Step down side；Backup power source is derived from spare low pressure side by backup power source incoming switch, and main transformer and spare accommodation are excessively high
Voltage breaker is connected with high voltage bus.Usually by power supply power supply all the way when high voltage bus is run, power supply switching is cut fastly by station service
Device is completed.There are three types of working powers and backup power source switching mode: parallel connection switching, simultaneously switching and series connection switching.Parallel connection is cut
Change and have in handoff procedure simultaneously the scene of two-way power supply Electromagnetic coupling, it is therefore desirable in advance to working power and backup power source
Carry out nuclear phase, prevention phase fault accident as caused by non-synchronous parallel connection.
Normal condition, according to design, what high voltage power supply obtained after main transformer, HV Auxiliary Transformer angular transition
Working power incoming power and high voltage power supply by the backup power source after spare change corner should same-phase, same to phase sequence, same to angle.
Then, non-same caused by step down side common box bus wiring error due to the Working transformer mode of connection and different design
Phase accident happens occasionally, and in this case, once dual power supply occurs, it will cause the generations of phase fault accident side by side.
Current high voltage bus power supply nuclear phase mode is: the incoming switch of work or backup power source is pulled out into switch gear room,
The baffle for artificially propping up contact in switching carries out a nuclear phase using high voltage nuclear phase stick.This method nuclear phase is accurate, but is opening
Interior is closed, artificial baffle of propping up violates safety, carries out nuclear phase with nuclear phase stick in narrow space, and wiring has intersection more,
Risk is big, and a lot of accidents occurred.Therefore, the system and method for finding a kind of safe and reliable high voltage bus power supply nuclear phase,
Just have a very important significance.
Summary of the invention
It is an object of the invention to overcome the above-mentioned prior art, a kind of power plant high voltage bus power supply core is provided
The system and method for phase, which can be realized high voltage bus power supply nuclear phase, and safety and reliability are higher.
In order to achieve the above objectives, the system of high voltage bus power supply nuclear phase in power plant of the present invention includes working power list
Member, generator breaker unit, working power common box bus, working power inlet wire are flexible coupling, working power incoming switch, work
Electric power incoming line voltage transformer, standby power unit, backup power source common box bus, backup power source inlet wire be flexible coupling, backup power source
Incoming switch, backup power source primary voltage mutual inductor, high voltage bus voltage transformer and high voltage bus；
Generator breaker unit is connected with working power unit, and the output end of working power unit is total through working power
Case bus and working power inlet wire are flexible coupling and one end of working power incoming switch and working power primary voltage mutual inductor phase
Connection；Standby power unit be flexible coupling through backup power source common box bus and backup power source inlet wire with backup power source incoming switch one
End and backup power source primary voltage mutual inductor are connected；The other end of backup power source incoming switch, working power incoming switch
The other end and high voltage bus voltage transformer are connected with high voltage bus, working power incoming switch nodes of locations, backup power source
Incoming switch nodes of locations, the secondary voltage side of working power primary voltage mutual inductor, backup power source primary voltage mutual inductor
Secondary voltage side and the secondary voltage side of high voltage bus voltage transformer are connected with bus fast switching device.
Working power unit includes working power high voltage bus, working power high-pressure side breaker, main transformer and high pressure
Working transformer, working power high voltage bus is through working power high-pressure side breaker and main transformer and high-pressure work transformer
One end and generator breaker unit are connected, and the other end of high-pressure work transformer is connected with working power common box bus.
Standby power unit includes backup power source high-voltage side bus, backup power source high-pressure side breaker and spare transformer,
Wherein, backup power source high-voltage side bus is through backup power source high-pressure side breaker and spare transformer and backup power source common box bus phase
Connection.
Generator breaker unit includes generator and generator outlet breaker, wherein the output end of generator is through sending out
Motor outlet breaker is connected with high-pressure work transformer.
The method of high voltage bus power supply nuclear phase in power plant of the present invention the following steps are included:
1) preparation of high voltage bus power supply nuclear phase test is carried out；
2) it is closed backup power source high-pressure side breaker and working power high-pressure side breaker, so that working power common box bus
And the electrification of backup power source common box bus is stablized；
3) by phase meter detect working power primary voltage mutual inductor and backup power source primary voltage mutual inductor voltage,
Amplitude and phase sequence, and judge the voltage of working power primary voltage mutual inductor and backup power source primary voltage mutual inductor, amplitude and
Whether phase sequence is correct, judges working power when the secondary side measured value and system nominal voltage of working power primary voltage mutual inductor
Whether the secondary side calculated value of primary voltage mutual inductor is consistent, when the secondary side of working power primary voltage mutual inductor measures
When being worth consistent with the secondary side calculated value of working power primary voltage mutual inductor when system nominal voltage, then illustrate work electricity
Source unit wiring is correct；Judge standby electricity when the secondary side measured value and system nominal voltage of backup power source primary voltage mutual inductor
Whether the secondary side calculated value of source primary voltage mutual inductor is consistent, when the secondary side of backup power source primary voltage mutual inductor is surveyed
When magnitude is consistent with the secondary side calculated value of backup power source primary voltage mutual inductor when system nominal voltage, then illustrate spare
Power supply unit wiring is correct, when the wiring of standby power unit and the correct wiring of working power unit, illustrates secondary returning
Road wiring is completely errorless, then goes to step 5)；Otherwise, then step 4) is gone to；
4) when working power unit connection mistake, then working power high-pressure side breaker is disconnected；Work as standby power unit
When wiring error, then backup power source high-pressure side breaker is disconnected, search and eliminate return step 2 after anomaly unit defect)；
5) Operating In Persistent Current Mode electric power incoming line switch and backup power source incoming switch, so that working power incoming switch, standby electricity
Source incoming switch, high voltage bus, working power primary voltage mutual inductor and the electrification of backup power source primary voltage mutual inductor；
6) high voltage bus voltage transformer, working power primary voltage mutual inductor and backup power source primary voltage mutual inductance are measured
The secondary side virtual voltage of device；
7) high voltage bus voltage transformer, working power primary voltage mutual inductor and backup power source primary voltage are judged respectively
Whether the secondary side virtual voltage of mutual inductor and its secondary side voltage calculated value are consistent, while judging high voltage bus electricity respectively
Whether the phase sequence for pressing mutual inductor, working power primary voltage mutual inductor and backup power source primary voltage mutual inductor is correct phase sequence,
To complete to the same of high voltage bus voltage transformer, working power primary voltage mutual inductor and backup power source primary voltage mutual inductor
Source nuclear phase, when high voltage bus voltage transformer, working power primary voltage mutual inductor and backup power source primary voltage mutual inductor
When homologous nuclear phase result is correct, then illustrate the one of working power unit inlet wire, high voltage bus and standby power unit inlet wire
Secondary device and secondary device are normal, then go to step 9), otherwise, then go to step 8)；
8) working power incoming switch and backup power source incoming switch are disconnected, so that working power incoming switch, standby electricity
Source incoming switch, high voltage bus, working power primary voltage mutual inductor and backup power source primary voltage mutual inductor power loss, then search
And eliminate return step 5 after anomaly unit defect)；
9) working power incoming switch and backup power source incoming switch, electric power incoming line of resuming work switch and work electricity are disconnected
Being flexible coupling between the common box bus of source, while restoring the soft company between backup power source incoming switch and backup power source common box bus
It connects, then goes to step 10)；
10) Operating In Persistent Current Mode power supply high-pressure side breaker and backup power source high-pressure side breaker, when standby power unit, work
Power supply unit, working power common box bus and the electrification of backup power source common box bus go to step 11) after stablizing；
11) non-homogeneous nuclear phase is carried out to working power unit and standby power unit, checks working power unit inlet wire electricity
Whether the polarity of pressure consistent with the polarity of standby power unit primary voltage, when working power unit primary voltage polarity with it is standby
When consistent with the polarity of power supply unit primary voltage, then step 13) is gone to, otherwise, then goes to step 12)；
12) working power high-pressure side breaker and backup power source high-pressure side breaker are disconnected so that working power unit and
Standby power unit power loss, then search and eliminate return step 10 after anomaly unit defect)；
13) high voltage bus power supply nuclear phase off-test.
The specific operation process of step 1) are as follows:
101) installment work power supply unit, standby power unit, backup power source common box bus, working power common box bus,
High voltage bus and working power primary voltage mutual inductor, backup power source primary voltage mutual inductor and high voltage bus voltage transformer model
Interior primary equipment and secondary device are enclosed, determines that secondary device wiring is correct, working power primary voltage mutual inductor, backup power source
Primary voltage mutual inductor and high voltage bus Secondary Circuit of Potential Transformer without open circuit phenomenon, working power primary voltage mutual inductor,
The primary insurance wiring of backup power source primary voltage mutual inductor and high voltage bus voltage transformer is good, working power primary voltage
Mutual inductor, backup power source primary voltage mutual inductor and the secondary of high voltage bus voltage transformer are spaced apart in "on" position；
102) generator outage, generator outlet breaker are in gate-dividing state, remove working power inlet wire be flexible coupling and
Backup power source inlet wire is flexible coupling；
103) carry out bus fast switching device static debugging, and carry out bus fast switching device band working power incoming switch and
The drive experiments of backup power source incoming switch；
104) opening and closing state of working power incoming switch and backup power source incoming switch is adjusted to inverse state, it will
Working power high-pressure side breaker and backup power source high-pressure side breaker are adjusted to hot stand-by duty.
The concrete operations of step 3) are as follows: using phase meter measure and record high voltage bus voltage transformer, working power into
The voltage value and phase of each group voltage transformer in the terminal box on the spot of line voltage mutual inductor and backup power source primary voltage mutual inductor
Sequence judges whether the phase sequence is positive phase sequence, at the same determine the voltage value whether with the normal output voltage value one under rated condition
It causes；
High voltage bus voltage transformer, working power primary voltage mutual inductor and standby electricity are checked on bus fast switching device
The voltage value and phase sequence of each group voltage transformer in the terminal box on the spot of source primary voltage mutual inductor, and by its respectively with phase meter
The voltage value and phase sequence of acquisition compare, it is ensured that working power primary voltage mutual inductor and backup power source primary voltage mutual inductor
Wiring and polar configurations it is correct.
It is working power incoming switch, working power primary voltage mutual inductor, backup power source incoming switch, standby in step 7)
It is in homologous system with power supply primary voltage mutual inductor, high voltage bus, high voltage bus voltage transformer, at the homologous system
Under voltage rating, at this time theoretically, polarity of voltage, the high voltage bus voltage transformer 8 of working power primary voltage mutual inductor
Polarity of voltage and backup power source primary voltage mutual inductor polarity of voltage it is consistent, when the polarity of voltage of any voltage mutual inductor
With other two it is inconsistent when, then there are wiring or performance issues for the voltage transformer, need to search and eliminate at this time abnormal electric
The defect of pressure mutual inductor again proceeds with homologous nuclear phase test；
On the screen of bus fast switching device, the differential seat angle of read work electric power incoming line voltage and high voltage bus voltage, pressure
Difference and frequency difference, when the differential seat angle of working power primary voltage and high voltage bus voltage, pressure difference and frequency difference it is equal zero when, then do not do and locate
Reason then needs to look into when any one of differential seat angle, pressure difference and the frequency difference of working power primary voltage and high voltage bus voltage are not zero
It looks for and the defect for eliminating abnormal voltage mutual inductor again proceeds with homologous nuclear phase test.
The concrete operations of step 9) are as follows: disconnect working power incoming switch and backup power source incoming switch, backup power source are total
Case bus, working power common box bus, working power incoming switch and backup power source incoming switch are in power failure state, resuspend
Ground line, being flexible coupling between electric power incoming line of then resuming work switch and working power common box bus, while restoring standby electricity
Being flexible coupling between source incoming switch and backup power source common box bus, then ground line is removed, then go to step 10).
Step 11) is further comprising the steps of:
1101) whether the secondary voltage amplitude for checking working power primary voltage mutual inductor is voltage rating divided by work electricity
Whether the no-load voltage ratio of source primary voltage mutual inductor, phase sequence are positive phase sequence, and whether residual voltage is zero；
1102) check whether the secondary voltage amplitude of backup power source primary voltage mutual inductor is voltage rating divided by standby electricity
Whether the no-load voltage ratio of source primary voltage mutual inductor, phase sequence are positive phase sequence, and whether residual voltage is zero；
1103) whether the secondary voltage amplitude for checking high voltage bus voltage transformer is voltage rating divided by high voltage bus electricity
The no-load voltage ratio of mutual inductor is pressed, whether phase sequence is positive phase sequence, and whether residual voltage is zero；
1104) working power primary voltage mutual inductor, backup power source primary voltage mutual inductor and high voltage bus voltage are checked
Whether the secondary voltage frequency difference of mutual inductor is zero, and whether phase angle difference with phase between pressure difference be less than 5V less than 3 °；
1105) the working power primary voltage mutual inductor read on bus fast switching device 15, backup power source inlet wire electricity are checked
Whether the secondary voltage frequency difference for pressing mutual inductor and high voltage bus voltage transformer is zero, and whether phase angle difference is less than 3 °, between phase
Whether pressure difference is less than 5V.
The invention has the following advantages:
The system and method for high voltage bus power supply nuclear phase in power plant of the present invention first uses work when specific operation
Power supply unit and standby power unit are female to working power inlet wire, working power primary voltage mutual inductor, high pressure as voltage source
Line, high voltage bus voltage transformer, backup power source inlet wire and backup power source primary voltage mutual inductor carry out homologous nuclear phase, confirmation two
After subsystem accurately reflects the case where primary system, standby power unit and working power unit is recycled to carry out non-homogeneous core
Phase, test efficiency are high, and test correctness is high, exclude the danger of manual operation primary equipment, can quickly, voltage is recognized accurately
Mutual inductor interstar connection defect, common box bus defective mounting and transformer connection mode defect, phase caused by preventing because of non-synchronous parallel connection
Between short circuit phenomenon, safety and reliability are higher, and the present invention is on the basis of working power unit, can be to multiple backup power sources
Unit carries out nuclear phase, female using the high pressure of power supply entering line, three electric power incoming lines and other more electric power incoming lines suitable for high voltage bus
Line power supply nuclear phase work, suitable for the power plant and large-scale factories and miness of the different modes of connection, in addition, the present invention is measured by phase meter
It corroborates each other with bus fast switching device reading, accuracy and reliability are higher.In addition, using working power unit or backup power source
Power supply of the unit as homologous nuclear phase, does not need additional power source, and better economy avoids artificially strutting electric power incoming line switch partition
Violation operation, avoid in small space carry out a nuclear phase risk, substantially reduce injury to personnel evil probability, safety
It is high.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is flow chart of the invention.
Wherein, 1 it is working power unit, 2 be working power common box bus, 3 is that working power inlet wire is flexible coupling, 4 be work
Make electric power incoming line voltage transformer, 5 be working power incoming switch, 6 be working power incoming switch nodes of locations, 7 be high pressure
Bus, 8 be high voltage bus voltage transformer, 9 be backup power source incoming switch, 10 be backup power source incoming switch nodes of locations,
11 it is backup power source primary voltage mutual inductor, 12 is that backup power source inlet wire is flexible coupling, 13 is backup power source common box bus, 14 is standby
Be bus fast switching device with power supply unit, 15,16 be generator breaker unit, 1DL is working power incoming switch, 2DL is
Backup power source incoming switch, 3DL are working power high-pressure side breaker, 4DL is backup power source high-pressure side breaker, GCB is hair
Motor outlet breaker.
Specific embodiment
The invention will be described in further detail with reference to the accompanying drawing:
With reference to Fig. 1, the system of high voltage bus power supply nuclear phase in power plant of the present invention includes working power unit 1, hair
Motor breaking device unit 16, working power common box bus 2, working power inlet wire be flexible coupling 3, working power incoming switch 5, work
Electric power incoming line voltage transformer 4, standby power unit 14, backup power source common box bus 13, backup power source inlet wire are flexible coupling 12, are standby
With power supply incoming switch 9, backup power source primary voltage mutual inductor 11, high voltage bus voltage transformer 8 and high voltage bus 7；Power generation
Machine breaker unit 16 is connected with working power unit 1, and the output end of working power unit 1 is through working power common box bus 2
And working power inlet wire is flexible coupling and 3 is connected with one end of working power incoming switch 5 and working power primary voltage mutual inductor 4
It connects；Standby power unit 14 through backup power source common box bus 13 and backup power source inlet wire be flexible coupling 12 with backup power source incoming switch
9 one end and backup power source primary voltage mutual inductor 11 are connected；The other end of backup power source incoming switch 9, working power into
The other end and high voltage bus voltage transformer 8 of wiretap 5 are connected with high voltage bus 7, working power incoming switch position section
Point 6, backup power source incoming switch nodes of locations 10, the secondary voltage side of working power primary voltage mutual inductor 4, backup power source into
The secondary voltage side of line voltage mutual inductor 11 and the secondary voltage side of high voltage bus voltage transformer 8 with bus fast switching device 15
It is connected.
Working power unit 1 include working power high voltage bus, working power high-pressure side breaker 1DL, main transformer and
High-pressure work transformer, working power high voltage bus is through working power high-pressure side breaker 1DL and main transformer and high-pressure work
One end of transformer and generator breaker unit 16 are connected, and the other end and working power of high-pressure work transformer are total to case mother
Line 2 is connected；Standby power unit 14 includes backup power source high-voltage side bus, backup power source high-pressure side breaker 2DL and spare
Transformer, wherein backup power source high-voltage side bus is through backup power source high-pressure side breaker 2DL and spare transformer and backup power source
Common box bus 13 is connected；Generator breaker unit 16 includes generator and generator outlet breaker GCB, wherein power generation
The output end of machine is connected through generator outlet breaker GCB with high-pressure work transformer.
With reference to Fig. 2, the method for high voltage bus power supply nuclear phase in power plant of the present invention the following steps are included:
1) preparation of high voltage bus power supply nuclear phase test is carried out；
2) it is closed backup power source high-pressure side breaker 2DL and working power high-pressure side breaker 1DL, so that working power is total
Case bus 2 and the electrification of backup power source common box bus 13 are stablized；
3) electricity of working power primary voltage mutual inductor 4 and backup power source primary voltage mutual inductor 11 is detected by phase meter
Pressure, amplitude and phase sequence, and judge working power primary voltage mutual inductor 4 and backup power source primary voltage mutual inductor 11 voltage,
Whether amplitude and phase sequence are correct, when judging the secondary side measured value and system nominal voltage of working power primary voltage mutual inductor 4
Whether the secondary side calculated value of working power primary voltage mutual inductor 4 is consistent, when working power primary voltage mutual inductor 4
When secondary side measured value is consistent with the secondary side calculated value of working power primary voltage mutual inductor 4 when system nominal voltage,
Then illustrate that 1 wiring of working power unit is correct；Judge the secondary side measured value and system of backup power source primary voltage mutual inductor 11
Whether the secondary side calculated value of backup power source primary voltage mutual inductor 11 is consistent when voltage rating, when backup power source inlet wire electricity
The secondary side of backup power source primary voltage mutual inductor 11 is theoretical when pressing the secondary side measured value and system nominal voltage of mutual inductor 11
When calculated value is consistent, then illustrate that 14 wiring of standby power unit is correct, wiring and working power list when standby power unit 14
When the wiring of member 1 is correct, illustrates that second loop return wiring is completely errorless, then go to step 5)；Otherwise, then step 4) is gone to；
4) when working power 1 wiring error of unit, then working power high-pressure side breaker 1DL is disconnected；Work as backup power source
When 14 wiring error of unit, then backup power source high-pressure side breaker 2DL is disconnected, search and returns to step after eliminating anomaly unit defect
It is rapid 2)；
5) Operating In Persistent Current Mode electric power incoming line switch 5 and backup power source incoming switch 9, so that working power incoming switch 5, spare
Electric power incoming line switch 9,11 band of high voltage bus 7, working power primary voltage mutual inductor 4 and backup power source primary voltage mutual inductor
Electricity；
6) it is mutual that high voltage bus voltage transformer 8, working power primary voltage mutual inductor 4 and backup power source primary voltage are measured
The secondary side virtual voltage of sensor 11；
7) high voltage bus voltage transformer 8, working power primary voltage mutual inductor 4 and backup power source inlet wire electricity are judged respectively
It presses secondary side virtual voltage and its secondary side voltage calculated value of mutual inductor 11 whether consistent, while judging high pressure mother respectively
Whether the phase sequence of line voltage mutual inductor 8, working power primary voltage mutual inductor 4 and backup power source primary voltage mutual inductor 11 is positive
True phase sequence, to complete to high voltage bus voltage transformer 8, working power primary voltage mutual inductor 4 and backup power source primary voltage
The homologous nuclear phase of mutual inductor 11, when high voltage bus voltage transformer 8, working power primary voltage mutual inductor 4 and backup power source into
When the homologous nuclear phase result of line voltage mutual inductor 11 is correct, then illustrate 1 inlet wire of working power unit, high voltage bus 7 and standby
It is normal with the primary equipment and secondary device of 14 inlet wire of power supply unit, then step 9) is gone to, otherwise, then goes to step 8)；
8) working power incoming switch 5 and backup power source incoming switch 9 are disconnected, so that working power incoming switch 5, spare
Electric power incoming line switch 9, high voltage bus 7, working power primary voltage mutual inductor 4 and backup power source primary voltage mutual inductor 11 lose
Electricity, then search and eliminate return step 5 after anomaly unit defect)；
9) working power incoming switch 5 and backup power source incoming switch 9, resume work electric power incoming line switch 5 and work are disconnected
Make being flexible coupling between power supply common box bus 2, while restoring between backup power source incoming switch 9 and backup power source common box bus 13
Be flexible coupling, then go to step 10)；
10) Operating In Persistent Current Mode power supply high-pressure side breaker 1DL and backup power source high-pressure side breaker 2DL, when backup power source list
Member 14, working power unit 1, working power common box bus 2 and the electrification of backup power source common box bus 13 go to step after stablizing
11)；
11) non-homogeneous nuclear phase carried out to working power unit 1 and standby power unit 14, check working power unit 1 into
Whether the polarity of line voltage is consistent with the polarity of 14 primary voltage of standby power unit, when 1 primary voltage of working power unit
When polarity is consistent with the polarity of 14 primary voltage of standby power unit, then step 13) is gone to, otherwise, then goes to step 12)；
12) working power high-pressure side breaker 1DL and backup power source high-pressure side breaker 2DL is disconnected, so that working power
14 power loss of unit 1 and standby power unit, then search and eliminate return step 10 after anomaly unit defect)；
13) high voltage bus power supply nuclear phase off-test.
The specific operation process of step 1) are as follows:
101) installment work power supply unit 1, standby power unit 14, backup power source common box bus 13, working power are total to case
Bus 2, high voltage bus 7 and working power primary voltage mutual inductor 4, backup power source primary voltage mutual inductor 11 and high voltage bus electricity
The primary equipment and secondary device in 8 range of mutual inductor are pressed, determines that secondary device wiring is correct, working power primary voltage mutual inductance
Device 4, backup power source primary voltage mutual inductor 11 and 8 secondary circuit of high voltage bus voltage transformer are without open circuit phenomenon, working power
The primary insurance wiring of primary voltage mutual inductor 4, backup power source primary voltage mutual inductor 11 and high voltage bus voltage transformer 8 is good
Well, the two of working power primary voltage mutual inductor 4, backup power source primary voltage mutual inductor 11 and high voltage bus voltage transformer 8
It is secondary to be spaced apart in "on" position；
102) generator outage, generator outlet breaker GCB are in gate-dividing state, remove working power inlet wire and are flexible coupling
3 and backup power source inlet wire be flexible coupling 12；
103) static debugging of bus fast switching device 15 is carried out, and carries out bus fast switching device 15 and is opened with working power inlet wire
Close the drive experiments of 5 and backup power source incoming switch 9；
104) opening and closing state of working power incoming switch 5 and backup power source incoming switch 9 is adjusted to inverse state,
Working power high-pressure side breaker 1DL and backup power source high-pressure side breaker 2DL are adjusted to hot stand-by duty.
The concrete operations of step 3) are as follows: using phase meter measure and record high voltage bus voltage transformer 8, working power into
In the terminal box on the spot of line voltage mutual inductor 4 and backup power source primary voltage mutual inductor 11 voltage value of each group voltage transformer and
Phase sequence judges whether the phase sequence is positive phase sequence, at the same determine the voltage value whether with the normal output voltage value under rated condition
Unanimously；
High voltage bus voltage transformer 8, working power primary voltage mutual inductor 4 and standby are checked on bus fast switching device 15
With the voltage value and phase sequence of each group voltage transformer in the terminal box on the spot of power supply primary voltage mutual inductor 11, and by its respectively with
The voltage value and phase sequence of phase meter acquisition compare, it is ensured that working power primary voltage mutual inductor 4 and backup power source inlet wire electricity
Press wiring and the polar configurations of mutual inductor 11 correct.
In step 7), working power incoming switch 5, working power primary voltage mutual inductor 4, backup power source incoming switch 9,
Backup power source primary voltage mutual inductor 11, high voltage bus 7, high voltage bus voltage transformer 8 are in homologous system, this is homologous
System is under voltage rating, at this time theoretically, polarity of voltage, the high voltage bus voltage of working power primary voltage mutual inductor 4
The polarity of voltage of mutual inductor 8 and the polarity of voltage of backup power source primary voltage mutual inductor 11 are consistent, when any voltage mutual inductor
Polarity of voltage with other two it is inconsistent when, then there are wiring or performance issues for the voltage transformer, need at this time search simultaneously
The defect for eliminating abnormal voltage mutual inductor again proceeds with homologous nuclear phase test；
On the screen of bus fast switching device 15, the differential seat angle of read work electric power incoming line voltage and 7 voltage of high voltage bus,
Pressure difference and frequency difference, when the differential seat angle of working power primary voltage and 7 voltage of high voltage bus, pressure difference and frequency difference it is equal zero when, then do not do
Processing, when any one of differential seat angle, pressure difference and the frequency difference of working power primary voltage and 7 voltage of high voltage bus are not zero, then
It need to search and the defect for eliminating abnormal voltage mutual inductor again proceeds with homologous nuclear phase test.
The concrete operations of step 9) are as follows: disconnect working power incoming switch 5 and backup power source incoming switch 9, backup power source
Common box bus 13, working power common box bus 2, working power incoming switch 5 and backup power source incoming switch 9 are in power loss shape
State, resuspends ground line, being flexible coupling between electric power incoming line switch 5 and working power common box bus 2 of then resuming work, simultaneously
Restore being flexible coupling between backup power source incoming switch 9 and backup power source common box bus 13, then remove ground line, then goes to step
It is rapid 10).
Step 11) is further comprising the steps of:
1101) check whether the secondary voltage amplitude of working power primary voltage mutual inductor 4 is voltage rating divided by work
Whether the no-load voltage ratio of electric power incoming line voltage transformer 4, phase sequence are positive phase sequence, and whether residual voltage is zero；
1102) check whether the secondary voltage amplitude of backup power source primary voltage mutual inductor 11 is voltage rating divided by spare
Whether the no-load voltage ratio of electric power incoming line voltage transformer 11, phase sequence are positive phase sequence, and whether residual voltage is zero；
1103) check whether the secondary voltage amplitude of high voltage bus voltage transformer 8 is voltage rating divided by high voltage bus
Whether the no-load voltage ratio of voltage transformer 8, phase sequence are positive phase sequence, and whether residual voltage is zero；
1104) working power primary voltage mutual inductor 4, backup power source primary voltage mutual inductor 11 and high voltage bus electricity are checked
Whether the secondary voltage frequency difference for pressing mutual inductor 8 is zero, and whether phase angle difference with phase between pressure difference be less than 5V less than 3 °；
1105) the working power primary voltage mutual inductor 4 read on bus fast switching device 15, backup power source inlet wire electricity are checked
Whether the secondary voltage frequency difference for pressing mutual inductor 11 and high voltage bus voltage transformer 8 is zero, and whether phase angle difference is less than 3 °, with phase
Between pressure difference whether be less than 5V.
The specific operation process of anomaly unit defect is searched and eliminated in step 12) are as follows:
1201) check whether the mode of connection and the design of spare transformer, main transformer and high-pressure work transformer are consistent；
1202) spare transformer, main transformer, high-pressure work transformer, working power common box bus 2 and standby electricity are checked
Whether source common box bus 13 presses drawing construction, check spare transformer it is each mutually with each phase connection of backup power source incoming switch 9 whether
It is corresponding；Check whether high-pressure work transformer is each mutually corresponding with each phase connection of working power incoming switch 5 simultaneously.
When the present invention carries out the test of high voltage bus power supply nuclear phase, using working power unit 1 as voltage source to work electricity
Source inlet wire, working power primary voltage mutual inductor 4, high voltage bus 7, high voltage bus voltage transformer 8, backup power source inlet wire and standby
Homologous nuclear phase is carried out with power supply primary voltage mutual inductor 11, after confirming the case where electrical secondary system accurately reflects primary system, then is used
Standby power unit 14 and working power unit 1 carry out non-homogeneous nuclear phase, and test efficiency is high, and test correctness is high, eliminate people
For operate primary equipment danger, can quickly, be recognized accurately, voltage transformer wiring defect, common box bus defective mounting
With transformer connection mode defect, phase fault phenomenon caused by preventing because of non-synchronous parallel connection.In addition, the present invention is with working power
On the basis of unit 1, can to multiple standby power units 14 carry out nuclear phase, be applicable to high voltage bus 7 using power supply entering line,
The high voltage bus power supply nuclear phase of three electric power incoming lines and other more electric power incoming lines works.
The above is only presently preferred embodiments of the present invention, is not intended to limit the invention in any way, it is all according to the present invention
Technical spirit any simple modification to the above embodiments, change and equivalent structural changes, still fall within skill of the present invention
In the protection scope of art scheme.
Claims (10)
1. a kind of system of power plant high voltage bus power supply nuclear phase, which is characterized in that including working power unit (1), generator
Breaker unit (16), working power common box bus (2), working power inlet wire be flexible coupling (3), working power incoming switch (5),
Working power primary voltage mutual inductor (4), standby power unit (14), backup power source common box bus (13), backup power source inlet wire
It is flexible coupling (12), backup power source incoming switch (9), backup power source primary voltage mutual inductor (11), high voltage bus voltage transformer
(8) and high voltage bus (7)；
Generator breaker unit (16) is connected with working power unit (1), and the output end of working power unit (1) is through working
Power supply common box bus (2) and working power inlet wire be flexible coupling (3) and working power incoming switch (5) one end and working power into
Line voltage mutual inductor (4) is connected；Standby power unit (14) is soft through backup power source common box bus (13) and backup power source inlet wire
Connection (12) is connected with one end of backup power source incoming switch (9) and backup power source primary voltage mutual inductor (11)；Standby electricity
The other end of source incoming switch (9), the other end of working power incoming switch (5) and high voltage bus voltage transformer (8) and height
Pressure bus (7) is connected, working power incoming switch nodes of locations (6), backup power source incoming switch nodes of locations (10), work
The secondary voltage side of electric power incoming line voltage transformer (4), the secondary voltage side of backup power source primary voltage mutual inductor (11) and height
The secondary voltage side of pressure bus-bar potential transformer (8) is connected with bus fast switching device (15).
2. the system of high voltage bus power supply nuclear phase in power plant according to claim 1, which is characterized in that working power unit
It (1) include working power high voltage bus, working power high-pressure side breaker (1DL), main transformer and high-pressure work transformer, work
Make power supply high voltage bus one end and hair through working power high-pressure side breaker (1DL) and main transformer and high-pressure work transformer
Motor breaking device unit (16) is connected, and the other end of high-pressure work transformer is connected with working power common box bus (2).
3. the system of high voltage bus power supply nuclear phase in power plant according to claim 1, which is characterized in that standby power unit
It (14) include backup power source high-voltage side bus, backup power source high-pressure side breaker (2DL) and spare transformer, wherein standby electricity
Source high-voltage side bus is connected through backup power source high-pressure side breaker (2DL) and spare transformer with backup power source common box bus (13)
It connects.
4. the system of high voltage bus power supply nuclear phase in power plant according to claim 1, which is characterized in that generator breaker
Unit (16) includes generator and generator outlet breaker (GCB), wherein the output end of generator is through generator outlet open circuit
Device (GCB) is connected with high-pressure work transformer.
5. a kind of method of power plant high voltage bus power supply nuclear phase, which is characterized in that high based on power plant as claimed in claim 4
The system for pressing bus power supply nuclear phase, comprising the following steps:
1) preparation of high voltage bus power supply nuclear phase test is carried out；
2) it is closed backup power source high-pressure side breaker (2DL) and working power high-pressure side breaker (1DL), so that working power is total
Case bus (2) and backup power source common box bus (13) electrification are stablized；
3) pass through phase meter detection working power primary voltage mutual inductor (4) and the electricity of backup power source primary voltage mutual inductor (11)
Pressure, amplitude and phase sequence, and judge the electricity of working power primary voltage mutual inductor (4) and backup power source primary voltage mutual inductor (11)
Whether pressure, amplitude and phase sequence are correct, judge the secondary side measured value and system nominal electricity of working power primary voltage mutual inductor (4)
Whether the secondary side calculated value of working power primary voltage mutual inductor (4) is consistent when pressure, when working power primary voltage is mutual
The secondary side theory meter of working power primary voltage mutual inductor (4) when the secondary side measured value and system nominal voltage of sensor (4)
When calculation value is consistent, then illustrate that working power unit (1) wiring is correct；Judge the secondary of backup power source primary voltage mutual inductor (11)
Whether side measured value is consistent with the secondary side calculated value of backup power source primary voltage mutual inductor (11) when system nominal voltage,
When the secondary side measured value of backup power source primary voltage mutual inductor (11) is with system nominal voltage, backup power source primary voltage is mutual
When the secondary side calculated value of sensor (11) is consistent, then illustrate that standby power unit (14) wiring is correct, when backup power source list
When the wiring of first (14) and the correct wiring of working power unit (1), illustrates that second loop return wiring is completely errorless, then go to step
It is rapid 5)；Otherwise, then step 4) is gone to；
4) when working power unit (1) wiring error, then working power high-pressure side breaker (1DL) is disconnected；Work as backup power source
When unit (14) wiring error, then backup power source high-pressure side breaker (2DL) is disconnected, search and is returned after eliminating anomaly unit defect
Return step 2)；
5) Operating In Persistent Current Mode electric power incoming line switch (5) and backup power source incoming switch (9), so that working power incoming switch (5), standby
With power supply incoming switch (9), high voltage bus (7), working power primary voltage mutual inductor (4) and backup power source primary voltage mutual inductance
Device (11) electrification；
6) it is mutual that high voltage bus voltage transformer (8), working power primary voltage mutual inductor (4) and backup power source primary voltage are measured
The secondary side virtual voltage of sensor (11)；
7) high voltage bus voltage transformer (8), working power primary voltage mutual inductor (4) and backup power source inlet wire electricity are judged respectively
It presses secondary side virtual voltage and its secondary side voltage calculated value of mutual inductor (11) whether consistent, while judging high pressure respectively
The phase sequence of bus-bar potential transformer (8), working power primary voltage mutual inductor (4) and backup power source primary voltage mutual inductor (11)
It whether is correct phase sequence, to complete to high voltage bus voltage transformer (8), working power primary voltage mutual inductor (4) and spare
The homologous nuclear phase of electric power incoming line voltage transformer (11), when high voltage bus voltage transformer (8), working power primary voltage mutual inductance
When the homologous nuclear phase result of device (4) and backup power source primary voltage mutual inductor (11) is correct, then illustrate working power unit
(1) inlet wire, the primary equipment of high voltage bus (7) and standby power unit (14) inlet wire and secondary device are normal, then go to step
It is rapid 9), otherwise, then go to step 8)；
8) working power incoming switch (5) and backup power source incoming switch (9) are disconnected, so that working power incoming switch (5), standby
With power supply incoming switch (9), high voltage bus (7), working power primary voltage mutual inductor (4) and backup power source primary voltage mutual inductance
Device (11) power loss, then search and eliminate return step 5 after anomaly unit defect)；
9) disconnect working power incoming switch (5) and backup power source incoming switch (9), electric power incoming line of resuming work switch (5) with
Being flexible coupling between working power common box bus (2), while restoring backup power source incoming switch (9) and backup power source common box bus
(13) being flexible coupling between, then goes to step 10)；
10) Operating In Persistent Current Mode power supply high-pressure side breaker (1DL) and backup power source high-pressure side breaker (2DL), when backup power source list
First (14), working power unit (1), working power common box bus (2) and backup power source common box bus (13) electrification turn after stablizing
To step 11)；
11) non-homogeneous nuclear phase is carried out to working power unit (1) and standby power unit (14), checked working power unit (1)
Whether the polarity of primary voltage is consistent with the polarity of standby power unit (14) primary voltage, when working power unit (1) inlet wire
When the polarity of voltage is consistent with the polarity of standby power unit (14) primary voltage, then step 13) is gone to, otherwise, then goes to step
It is rapid 12)；
12) working power high-pressure side breaker (1DL) and backup power source high-pressure side breaker (2DL) are disconnected, so that working power
Unit (1) and standby power unit (14) power loss, then search and eliminate return step 10 after anomaly unit defect)；
13) high voltage bus power supply nuclear phase off-test.
6. the method for high voltage bus power supply nuclear phase in power plant according to claim 5, which is characterized in that step 1) it is specific
Operating process are as follows:
101) installment work power supply unit (1), standby power unit (14), backup power source common box bus (13), working power are total
Case bus (2), high voltage bus (7) and working power primary voltage mutual inductor (4), backup power source primary voltage mutual inductor (11) and
Primary equipment and secondary device in high voltage bus voltage transformer (8) range, determine that secondary device wiring is correct, working power
Primary voltage mutual inductor (4), backup power source primary voltage mutual inductor (11) and high voltage bus voltage transformer (8) secondary circuit without
Open circuit phenomenon, working power primary voltage mutual inductor (4), backup power source primary voltage mutual inductor (11) and high voltage bus voltage are mutual
The primary insurance wiring of sensor (8) is good, working power primary voltage mutual inductor (4), backup power source primary voltage mutual inductor
(11) and secondary being spaced apart in "on" position of high voltage bus voltage transformer (8)；
102) generator outage, generator outlet breaker (GCB) are in gate-dividing state, remove working power inlet wire and are flexible coupling
(3) and backup power source inlet wire is flexible coupling (12)；
103) static debugging of bus fast switching device (15) is carried out, and carries out bus fast switching device (15) band working power inlet wire and opens
Close the drive experiments of (5) and backup power source incoming switch (9)；
104) opening and closing state of working power incoming switch (5) and backup power source incoming switch (9) is adjusted to inverse state,
Working power high-pressure side breaker (1DL) and backup power source high-pressure side breaker (2DL) are adjusted to hot stand-by duty.
7. the method for high voltage bus power supply nuclear phase in power plant according to claim 5, which is characterized in that step 3) it is specific
Operation are as follows: using phase meter measure and record high voltage bus voltage transformer (8), working power primary voltage mutual inductor (4) and
The voltage value and phase sequence of each group voltage transformer, judge the phase in the terminal box on the spot of backup power source primary voltage mutual inductor (11)
Whether sequence is positive phase sequence, while determining whether the voltage value is consistent with the normal output voltage value under rated condition；
On bus fast switching device (15) check high voltage bus voltage transformer (8), working power primary voltage mutual inductor (4) and
The voltage value and phase sequence of each group voltage transformer in the terminal box on the spot of backup power source primary voltage mutual inductor (11), and by its point
It is not compared with the voltage value of phase meter acquisition and phase sequence, it is ensured that working power primary voltage mutual inductor (4) and backup power source
The wiring of primary voltage mutual inductor (11) and polar configurations are correct.
8. the method for high voltage bus power supply nuclear phase in power plant according to claim 5, which is characterized in that in step 7), work
Make electric power incoming line switch (5), working power primary voltage mutual inductor (4), backup power source incoming switch (9), backup power source inlet wire
Voltage transformer (11), high voltage bus (7), high voltage bus voltage transformer (8) are in homologous system, at the homologous system
Under voltage rating, at this time theoretically, polarity of voltage, the high voltage bus mutual induction of voltage of working power primary voltage mutual inductor (4)
The polarity of voltage of device (8) and the polarity of voltage of backup power source primary voltage mutual inductor (11) are consistent, when any voltage mutual inductor
Polarity of voltage with other two it is inconsistent when, then there are wiring or performance issues for the voltage transformer, need at this time search simultaneously
The defect for eliminating abnormal voltage mutual inductor again proceeds with homologous nuclear phase test；
On the screen of bus fast switching device (15), the differential seat angle of read work electric power incoming line voltage and high voltage bus (7) voltage,
Pressure difference and frequency difference, when the differential seat angle of working power primary voltage and high voltage bus (7) voltage, pressure difference and frequency difference it is equal zero when, then not
It processes, when working power primary voltage and any one of the differential seat angle, pressure difference and frequency difference of high voltage bus (7) voltage are not zero
When, then need the defect for searching and eliminating abnormal voltage mutual inductor to again proceed with homologous nuclear phase test.
9. the method for high voltage bus power supply nuclear phase in power plant according to claim 5, which is characterized in that step 9) it is specific
Operation are as follows: disconnect working power incoming switch (5) and backup power source incoming switch (9), backup power source common box bus (13), work
Power supply common box bus (2), working power incoming switch (5) and backup power source incoming switch (9) are in power failure state, resuspend and connect
Ground wire, being flexible coupling between electric power incoming line of then resuming work switch (5) and working power common box bus (2), while restoring standby
With being flexible coupling between power supply incoming switch (9) and backup power source common box bus (13), then ground line is removed, then goes to step
10)。
10. the method for high voltage bus power supply nuclear phase in power plant according to claim 5, which is characterized in that step 11) is also wrapped
Include following steps:
1101) whether the secondary voltage amplitude for checking working power primary voltage mutual inductor (4) is voltage rating divided by work electricity
Whether the no-load voltage ratio of source primary voltage mutual inductor (4), phase sequence are positive phase sequence, and whether residual voltage is zero；
1102) check whether the secondary voltage amplitude of backup power source primary voltage mutual inductor (11) is voltage rating divided by standby electricity
Whether the no-load voltage ratio of source primary voltage mutual inductor (11), phase sequence are positive phase sequence, and whether residual voltage is zero；
1103) whether the secondary voltage amplitude for checking high voltage bus voltage transformer (8) is voltage rating divided by high voltage bus electricity
The no-load voltage ratio of mutual inductor (8) is pressed, whether phase sequence is positive phase sequence, and whether residual voltage is zero；
1104) working power primary voltage mutual inductor (4), backup power source primary voltage mutual inductor (11) and high voltage bus electricity are checked
Whether the secondary voltage frequency difference for pressing mutual inductor (8) is zero, and whether phase angle difference with phase between pressure difference be less than 5V less than 3 °；
1105) the working power primary voltage mutual inductor (4) read on bus fast switching device (15), backup power source inlet wire electricity are checked
Whether the secondary voltage frequency difference for pressing mutual inductor (11) and high voltage bus voltage transformer (8) is zero, and whether phase angle difference is less than 3 °, together
Whether pressure difference is less than 5V between phase.
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