CN106230101A - A kind of bank electricity ship electricity synchronizes not have a power failure switching device and method - Google Patents
A kind of bank electricity ship electricity synchronizes not have a power failure switching device and method Download PDFInfo
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- CN106230101A CN106230101A CN201610680275.3A CN201610680275A CN106230101A CN 106230101 A CN106230101 A CN 106230101A CN 201610680275 A CN201610680275 A CN 201610680275A CN 106230101 A CN106230101 A CN 106230101A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/061—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for DC powered loads
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Eletrric Generators (AREA)
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Abstract
The invention discloses a kind of bank electricity ship electricity to synchronize not have a power failure switching device and method, device includes bank electricity ship electricity switch control unit, high voltage shore power power supply, high-voltage solid-state switching switch.Switching control process includes: bank electricity ship electricity switch control unit gathers bank electricity output voltage and electric current and ship piezoelectric voltage and electric current, carry out bank electricity, the quasi-computing same period changed of ship TURP again, when making the difference in magnitude between bank electricity output voltage and ship piezoelectric voltage, difference on the frequency, phase contrast less than certain threshold value, the three-phase controllable switch unit being connected with high voltage shore power power supply of closingS 1；Calculate ship bear according to the ship piezoelectric voltage gathered, galvanometer and carry power, after control bank electric output power reaches to supply boats and ships load, disconnect the three-phase controllable switch unit being connected with marine generatorS 2, and send marine generator halt instruction.The present invention can ensure that on ship, important load is powered the most continually and steadily, it is achieved boats and ships load does not have a power failure and shifted to bank electricity by ship TURP and be powered, and improves the automatization level at green harbour and shipyard.
Description
Technical field
The present invention relates to electric and electronic technical field, particularly a kind of bank electricity ship electricity synchronizes not have a power failure switching device and side
Method.
Background technology
In order to China harbour shipyard land electrical network electricity be made as the power supply of 50Hz, be converted to boats and ships electricity through frequency conversion, transformation
Standing acceptable 60Hz or 50Hz power supply, shore electric power only uses converters.Converters is with big
During electrical network parallel connection, its output voltage is not affected by line voltage, can control output by controlling the output electric current of inversion link
Power.Compared with the bulk power grid of land, the independent light current net of network of ship finite capacity, if inversion link current source routinely controls
Method be incorporated to network of ship, then can to Ship Electrical Power System produce harmful effect even cause power-off.So bank is electrically accessed ship
During electricity, it is necessary to take switching measure, current Normal practice to need first to disconnect boats and ships generating, then the discontinuous switching accessing bank electricity connects
Entering, this way needs the power failure that marine vessel power carries out a period of time to process, and it is unfavorable for holding important load on boats and ships
Continuous stable power-supplying.And the bank electricity ship electricity handoff procedure that do not has a power failure, if directly by shore electric power switching upper network of ship, may
Because both voltage-phases, amplitude, frequency exist difference, cause rush of current, damage boats and ships and power on power equipment.
Summary of the invention
The technical problem to be solved is, not enough for prior art, it is provided that a kind of bank electricity ship electricity synchronizes not stop
Electrical switching apparatus and method.
For solving above-mentioned technical problem, the technical solution adopted in the present invention is: a kind of bank electricity ship electricity synchronizes not have a power failure to cut
Changing device, including bank electricity ship electricity switch control unit, high voltage shore power power supply, high-voltage solid-state switching switch；Described bank electric control list
Unit, high voltage shore power power supply are all connected with described high-voltage solid-state switching switch；Described high-voltage solid-state switching switch with marine generator,
Boats and ships high-tension distribution box, boats and ships low-tension distribution box connect；Described bank electric control unit is connected with described marine generator；Described height
Pressure solid converting switch includes two three-phase controllable switch unit, driver element, communication unit and control unit；Described communication unit
First and described control unit is connected；Described control unit is connected with described driver element；Described driver element and said two three
Phase controllable switch unit connects；Said two three-phase controllable switch unit is connected with high voltage shore power power supply, marine generator respectively.
Bank electricity ship electricity switch control unit gathers bank electricity output voltage and electric current and ship piezoelectric voltage and electric current, then carries out bank
The quasi-computing same period that electricity ship TURP changes so that the difference in magnitude between bank electricity output voltage and ship piezoelectric voltage, difference on the frequency, phase contrast are little
Close when certain threshold value the three-phase controllable switch unit being connected with high voltage shore power power supplyS 1；According to the ship piezoelectric voltage gathered, electricity
The boats and ships bearing power that flowmeter calculates, after control bank electric output power reaches to supply boats and ships load, disconnects and connecting with marine generator
The three-phase controllable switch unit connectS 2, and send marine generator halt instruction.
The described quasi-computing same period includes the presynchronization computing carrying out phase place, amplitude, and phase place presynchronization is to utilize boats and ships voltageV shipWith shore electric power output voltageV sps, calculate phase place respectively through phaselocked loopθ ship、θ sps,θ ship、θ spsDo difference and obtain Δθ
Control input as PI, control to adjust bank electricity output voltage phase place, when both phase contrasts are less than when setting threshold value 0.01, send phase
Bit synchronization successfully instructs；Utilize boats and ships voltageV shipWith shore electric power output voltageV sps, go out respectively through Park transformation calculationsV d_ship、V d_sps, both do difference and obtain ΔV d , utilize Double closed-loop of voltage and current to obtain the modulation sinusoidal signal of SPWM modulation,
Control high voltage shore power power inverter through phase-shifting carrier wave, thus reach voltage magnitude less than threshold value 0.05 V d * after, output amplitude
Synchronize successfully to instruct, the amplitude reclosing command that successfully send high-voltage solid-state switching switch the most synchronize with phase place；V d* it is voltage amplitude
The given value after Park transformation calculations of value
Compared with prior art, the had the beneficial effect that present invention of the present invention can ensure that on ship, important load is uninterrupted
Continual and steady power supply, it is achieved boats and ships load does not have a power failure and shifted to bank electricity by ship TURP and be powered, and improves green harbour and shipyard
Automatization level.
Accompanying drawing explanation
Fig. 1 is bank electricity ship electrical switching apparatus structural representation of the present invention；
Fig. 2 is that high-voltage solid-state of the present invention switches on-off principle figure；
Fig. 3 is reality synchronous switching control schematic diagram of the present invention.
Detailed description of the invention
Bank electricity ship electricity of the present invention synchronizes the changing method principle that do not has a power failure, and uses high-voltage solid-state switching switch to make in ship electricity
Hardware for bank electricity ship electricity is switched fast switch, after boats and ships reach port, first on the basis of ship electricity, by controlling bank electricity output voltage
Amplitude, phase place, frequency reach to realize the condition that ship electricity line voltage is grid-connected, then carry out load and are transferred to be supplied by bank electricity
Giving, then that ship is electrically disconnected, on ship, load is supplied by bank electricity completely, and marine generator is shut down.Described high voltage shore power power supply,
Phase-shifting transformer and 3 phases are used to cascade the topological structure of 5 possibility of reversal flow modules mutually, it is possible to realize harbour/shipyard power transformation
Institute's 10kV/50Hz power supply carries out frequency conversion, transformation processes, and reaches the quality of power supply of storeship electricity.Described ship electricity mainly includes high pressure
Solid converting switch, marine generator, boats and ships high voltage power distribution, boat-carrying transformator, boats and ships low-voltage distribution, described high-pressure solid-state switch
InternalS 1Switch input side is connected with high voltage shore power power supply, and outlet side connected boat goddess of lightning's line is with internalS 2Switch, describedS 2Switch
Output is connected with marine generator, and the load of described boats and ships is connected with ship goddess of lightning's line by boat-carrying transformator, and described boat-carrying becomes
Depressor is that optional by 6.6kV blood pressure lowering, to be 0.45kV or 0.4kV to ship bear carry is powered.
Giving bank electricity ship electrical switching apparatus structural representation as shown in Figure 1, this device includes bank electricity ship electricity switching control
Unit, high voltage shore power power supply, high-voltage solid-state switching switch.Described bank electricity ship electricity switch control unit mainly include bank electric control,
Control command output, signals collecting calculate, and bank electricity frequency modulation and voltage modulation controls；Described ship electricity mainly includes that marine generator, boats and ships are high
It is press-fitted electricity, boats and ships transformator, boats and ships low-voltage distribution.It mainly completes to reach port ship power supply by ship by high-voltage solid-state switching switch
Oceangoing ship generator powered is converted to the switching transition that bank electricity is powered, described high-voltage solid-state switching switch internal switchS 1Input and high pressure
Shore electric power is connected, its access being responsible for bank electricity and disconnection,S 1Output and internal switchS 2, marine vessel power bus be connected,
High pressure marine vessel power busbar voltage is 6.6kV standard, can be according to needs selection boat-carrying transformer pressure-reducing to 0.45kV or 0.4kV
Supply boats and ships low-voltage distribution uses.Internal switchS 2It is connected with marine generator, controls access and disconnection, the ship of boats and ships Generation Side
Oceangoing ship electromotor can be realized on off control by switch controller.Changing method of the present invention is on the basis of ship electricity, and regulation and control bank electricity reaches
With the same width of ship piezoelectric voltage, with frequency, homophase, practical operation is that difference in magnitude, difference on the frequency, phase contrast meet certain condition and be i.e. judged as
Can carry out synchronizing and net operation.
Being illustrated in figure 2 high-voltage solid-state switching on-off principle figure, described high-voltage solid-state switching switch includes that two three-phases can
Control switch element, driver element, communication unit and control unit；Described communication unit is connected with described control unit；Described control
Unit processed is connected with described driver element；Described driver element and said two three-phase controllable switch unitS 1WithS 2Connect；Described
Two three-phase controllable switch unit are connected with high voltage shore power power supply, marine generator respectively.Two forward and reverse structures in parallel of IGCT
Become a switch element unit, two switch element unit single-phase switch Sw_sp in series, 3 single-phase switch Sw_sp
Form a three-phase controllable switch unitS 1.Load can pass through threephase switchS 1、S 2Selection is to be powered by power supply 1 or power supply 2 supplies
Electricity.Communication unit receives the switch switching command of bank electricity ship electricity switch control unit output, and control unit refers to according to switch switching
The triggering pulse command signal of order output IGCT, this signal produces the drive pulse signal of each IGCT by driver element,
Realize triggering and conducting or the shutoff of IGCT.
As it is shown on figure 3, be synchronous switching control schematic diagram, mainly include that Phase synchronization is Tong Bu with amplitude, by theory analysis
Understand Phase synchronization and can ensure Frequency Synchronization.Described Phase synchronization, is by signals collecting computing unit, by defeated with bank electricity for ship electricity
Go out voltage, electric current is sent to master control borad through analog digital conversion and carries out computing, utilizes boats and ships voltage, Current calculation boats and ships load merit
Rate.By boats and ships voltageV shipWith shore electric power output voltageV sps, obtain ship piezoelectric voltage phase place by phaselocked loop respectivelyθ ship, bank electricity
Voltage-phaseθ sps, both do difference and obtain ΔθAs the input of pi controller PI, PI controller output regulation and control high pressure bank
Electricity output voltage phase place.Making phase contrast reach Phase synchronization condition, less than when setting threshold value 0.01, output Phase synchronization becomes instruction
Phase_cmd.Described amplitude synchronizes by boats and ships voltageV shipWith shore electric power output voltageV sps, respectively through Park conversion meter
CalculateV d_ship、V d_sps, both do difference and obtain ΔV d, utilize Double closed-loop of voltage and current to obtain the modulation sine of SPWM modulation
Signal, through phase-shifting carrier wave controlled stage connection type high-voltage bank electricity inversion, utilizes difference in magnitude to judge, reaches voltage magnitude less than threshold
Value (0.05Vd *After), output amplitude synchronizes successfully to instruct RMS_cmd, and high-voltage solid-state is cut by successfully send the most synchronize with phase place of amplitude
Change switchS 1Reclosing command.V d* for the given value after Park transformation calculations of voltage magnitude.Utilize Ship ' load
Power, controls bank electrical power output, and load is transferred to the supply of bank electricity, thenS 2Disconnect, marine generator is shut down.
Claims (3)
1. a bank electricity ship electricity synchronizes not have a power failure switching device, it is characterised in that include bank electricity ship electricity switch control unit, high pressure
Shore electric power, high-voltage solid-state switching switch；Described bank electric control unit, high voltage shore power power supply are all opened with the switching of described high-voltage solid-state
Close and connect；Described high-voltage solid-state switching switch is connected with marine generator, boats and ships high-tension distribution box, boats and ships low-tension distribution box；Institute
State bank electric control unit to be connected with described marine generator；Described high-voltage solid-state switching switch includes two three-phase gate-controlled switch lists
Unit, driver element, communication unit and control unit；Described communication unit is connected with described control unit；Described control unit with
Described driver element connects；Described driver element is connected with said two three-phase controllable switch unit；Said two three-phase is controlled
Switch element is connected with high voltage shore power power supply, marine generator respectively.
2. a bank electricity ship electricity synchronizes not have a power failure changing method, it is characterised in that bank electricity ship electricity switch control unit gathers bank electricity
Output voltage and electric current and ship piezoelectric voltage and electric current, then carry out the quasi-computing same period that bank electricity ship TURP changes so that bank electricity output electricity
Close when pressing with the difference in magnitude between ship piezoelectric voltage, difference on the frequency, phase contrast less than certain threshold value and be connected with high voltage shore power power supply
Three-phase controllable switch unitS 1；The boats and ships bearing power calculated according to the ship piezoelectric voltage gathered, galvanometer, controls bank electricity output work
After rate reaches to supply boats and ships load, disconnect the three-phase controllable switch unit being connected with marine generatorS 2, and send boats and ships generating
Machine halt instruction.
Bank electricity ship electricity the most according to claim 2 synchronizes not have a power failure changing method, it is characterised in that the described quasi-computing same period
Including carrying out the presynchronization computing of phase place, amplitude, phase place presynchronization is to utilize boats and ships voltageV shipWith shore electric power output voltageV sps, calculate phase place respectively through phaselocked loopθ ship、θ sps,θ ship、θ spsDo difference and obtain ΔθControl input as PI, control to adjust
Whole bank electricity output voltage phase place, when both phase contrasts are less than when setting threshold value 0.01, send Phase synchronization and successfully instructs；Utilize ship
Oceangoing ship voltageV shipWith shore electric power output voltageV sps, go out respectively through Park transformation calculationsV d_ship、V d_sps, both do difference and obtain
ΔV d , utilize Double closed-loop of voltage and current to obtain the modulation sinusoidal signal of SPWM modulation, control high pressure bank through phase-shifting carrier wave
Electricity power inverter, thus reach voltage magnitude less than threshold value 0.05 V d *, after, output amplitude synchronizes successfully to instruct, amplitude and phase place
All synchronize successfully to send the reclosing command to high-voltage solid-state switching switch；V d* given through Park transformation calculations for voltage magnitude
After value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610680275.3A CN106230101B (en) | 2016-08-18 | 2016-08-18 | Shore power ship power synchronization uninterrupted switching apparatus and method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610680275.3A CN106230101B (en) | 2016-08-18 | 2016-08-18 | Shore power ship power synchronization uninterrupted switching apparatus and method |
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| CN106230101A true CN106230101A (en) | 2016-12-14 |
| CN106230101B CN106230101B (en) | 2017-05-17 |
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| CN201610680275.3A Active CN106230101B (en) | 2016-08-18 | 2016-08-18 | Shore power ship power synchronization uninterrupted switching apparatus and method |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107332283A (en) * | 2017-08-24 | 2017-11-07 | 泰州学院 | Shore electric power is smoothly incorporated to the synchronisation control means of network of ship |
| CN107681657A (en) * | 2017-09-27 | 2018-02-09 | 广州航海学院 | The method and device of 50Hz 60Hz and 50Hz 50Hz double frequency bank electricity seamless switchings ship electricity |
| CN107681774A (en) * | 2017-08-11 | 2018-02-09 | 梁乾兵 | A kind of low-voltage ship bank electricity apparatus for fast switching |
| CN108107960A (en) * | 2017-12-12 | 2018-06-01 | 广州智光电气股份有限公司 | The output voltage control method and device of a kind of shore electric power |
| CN109038682A (en) * | 2018-10-17 | 2018-12-18 | 江苏科技大学 | A kind of device inhibiting shipping shore power system inverse probability |
| CN110867954A (en) * | 2019-12-03 | 2020-03-06 | 福建永强力加动力设备有限公司 | Control method of automobile comprehensive electric energy controller |
| CN112886588A (en) * | 2021-04-09 | 2021-06-01 | 东方日立(成都)电控设备有限公司 | Power autonomous transfer method and system for multi-machine parallel shore power supply device |
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| CN203747437U (en) * | 2014-01-27 | 2014-07-30 | 广州航海学院 | Movable shore power connector |
| EP2947742A1 (en) * | 2014-05-13 | 2015-11-25 | LSIS Co., Ltd. | Apparatus and method for insulation design of high voltage direct current transmission system |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107681774A (en) * | 2017-08-11 | 2018-02-09 | 梁乾兵 | A kind of low-voltage ship bank electricity apparatus for fast switching |
| CN107332283A (en) * | 2017-08-24 | 2017-11-07 | 泰州学院 | Shore electric power is smoothly incorporated to the synchronisation control means of network of ship |
| CN107332283B (en) * | 2017-08-24 | 2020-04-17 | 泰州学院 | Synchronous control method for smoothly merging shore power supply into ship power grid |
| CN107681657A (en) * | 2017-09-27 | 2018-02-09 | 广州航海学院 | The method and device of 50Hz 60Hz and 50Hz 50Hz double frequency bank electricity seamless switchings ship electricity |
| CN107681657B (en) * | 2017-09-27 | 2023-07-14 | 广州航海学院 | Method and device for seamlessly switching ship power by 50Hz-60Hz and 50Hz-50Hz double-frequency shore power |
| CN108107960A (en) * | 2017-12-12 | 2018-06-01 | 广州智光电气股份有限公司 | The output voltage control method and device of a kind of shore electric power |
| CN108107960B (en) * | 2017-12-12 | 2024-03-01 | 广州智光电气股份有限公司 | Output voltage control method and device for shore power supply |
| CN109038682A (en) * | 2018-10-17 | 2018-12-18 | 江苏科技大学 | A kind of device inhibiting shipping shore power system inverse probability |
| CN110867954A (en) * | 2019-12-03 | 2020-03-06 | 福建永强力加动力设备有限公司 | Control method of automobile comprehensive electric energy controller |
| CN112886588A (en) * | 2021-04-09 | 2021-06-01 | 东方日立(成都)电控设备有限公司 | Power autonomous transfer method and system for multi-machine parallel shore power supply device |
| CN112886588B (en) * | 2021-04-09 | 2023-03-14 | 东方日立(成都)电控设备有限公司 | Power autonomous transfer method and system for multi-machine parallel shore power supply device |
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| CN106230101B (en) | 2017-05-17 |
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