CN110048615A - High voltage shore power power supply inhibits control method and its device against function - Google Patents
High voltage shore power power supply inhibits control method and its device against function Download PDFInfo
- Publication number
- CN110048615A CN110048615A CN201910326387.2A CN201910326387A CN110048615A CN 110048615 A CN110048615 A CN 110048615A CN 201910326387 A CN201910326387 A CN 201910326387A CN 110048615 A CN110048615 A CN 110048615A
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- Prior art keywords
- power
- high voltage
- power supply
- voltage shore
- shore power
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M5/00—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
- H02M5/40—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/0003—Details of control, feedback or regulation circuits
- H02M1/0038—Circuits or arrangements for suppressing, e.g. by masking incorrect turn-on or turn-off signals, e.g. due to current spikes in current mode control
Abstract
High voltage shore power power supply inhibits control method against function, comprising the following steps: starts the instantaneous active power P of calculating and Chinese herbaceous peony high voltage shore power power supply in real time before simultaneously vehicleout；Judge the instantaneous active power P of high voltage shore power power supplyoutAbsolute value | Pout| whether it is greater than preset active power threshold value Pth, if it is greater than active power threshold value Pth, then judge that high voltage shore power power supply has entered simultaneously car state, and the output frequency for controlling high voltage shore power power supply promotes Fup.The invention also discloses a kind of high voltage shore power power supplys to inhibit control device against function.The present invention can guarantee that the inverse function caused by high voltage shore power power supply and ship electricity and vehicle moment is quickly inhibited, improve the success rate of simultaneously vehicle in the case where not increasing hardware cost.
Description
Technical field
The present invention relates to high voltage shore power power supplys to inhibit control method and its device against function.
Background technique
In the past, the ship that reaches port mainly uses marine generator to realize power supply, not only brings environmental pollution, while also bringing
The problems such as noise pollution and energy consumption.In order to farthest reduce ship during reach port brought by noise and
Environmental pollution more and more reaches port ship by the way of shore electric power power supply, and among these, high voltage shore power is most widely used
A kind of shore electric power.Fig. 1 shows a kind of topological structure schematic diagram of high voltage shore power power supply common at present, as shown in Figure 1,
High voltage shore power power supply includes high-voltage frequency converter and Three-phase electric-wave filter 2, the input of the output end and Three-phase electric-wave filter 2 of high-voltage frequency converter
End electrical connection, output of the output end of three-phase filter 2 as high voltage shore power power supply.High-voltage frequency converter include phase-shifting transformer 11,
Every phase bridge arm of power cell group 12, main control module 13 etc., power cell group 12 is made of n power unit cascade, wherein
N is the integer more than or equal to 3.In example in figure, every phase bridge arm is made of 5 power unit cascades, and A phase bridge arm is by power list
First A1, power cell A2 ... and power cell A5 are composed in series, and B phase bridge arm is by power cell B1, power cell B2 ...
And power cell B5 is composed in series, C phase bridge arm is by power cell C1, power cell C2 ... and power cell C5 series connection group
At.High-voltage frequency converter generallys use two quadrant high-voltage frequency converters.Three-phase electric-wave filter 2 generallys use three-phase LC filter.
To reduce inverse influence of the function to shore electric power in shore electric power and ship electricity Engagement, need in strict accordance with simultaneously wagon flow
Journey realizes Engagement, and mainly to follow the following: 1, and the vehicle moment is determined by Phase Detector, avoids and when vehicle
It is excessive to carve dash current；2, in Engagement, to realize the load transfer between shore electric power and ship electricity, using the sagging control of PQ
Mode；3, direct current is converted to three-phase alternating current by the DC/AC inversion link of high voltage shore power, shipborne equipment of powering.
During high voltage shore power power supply is powered to ship, and the vehicle moment grasps dependent on Phase Detector and manual closing operation
Make, regular hour error can be generated, therefore not can avoid that there are the possibility of inverse function, if inverse function is too big, the duration is too long,
The busbar voltage that then will lead to high-voltage frequency converter increases, high-voltage frequency converter report over-voltage fault, to cause simultaneously vehicle failure.
Summary of the invention
Technical problem to be solved by the present invention lies in provide a kind of high voltage shore power power supply to inhibit control method, energy against function
Enough in the case where not increasing hardware cost, guarantee that the inverse function caused by high voltage shore power power supply and ship electricity and vehicle moment is quick
Inhibit, improves the success rate of simultaneously vehicle.
Another technical problem to be solved by this invention is to provide a kind of high voltage shore power power supply and inhibits control device against function.
The present invention provides a kind of high voltage shore power power supplys to inhibit control method against function, and high voltage shore power power supply includes high-pressure frequency-conversion
Every phase of device, high-voltage frequency converter has multiple power unit cascades, and it includes following which, which inhibits control method against function,
Step:
Step a, start the instantaneous active power P for calculating simultaneously Chinese herbaceous peony high voltage shore power power supply in real time before simultaneously vehicleout；
Step b, judge the instantaneous active power P of high voltage shore power power supplyoutAbsolute value | Pout| whether have greater than preset
Function power threshold Pth, if it is greater than active power threshold value Pth, then judge that high voltage shore power power supply has entered simultaneously car state, and control
The output frequency of high voltage shore power power supply promotes Fup。
The present invention also provides a kind of high voltage shore power power supplys to inhibit control device against function, comprising: memory, for storing journey
Sequence；Processor executes high voltage shore power power supply above-mentioned for loading described program against function and inhibits control method.
The present invention has at least the following advantages:
1, the high voltage shore power power supply of the present embodiment inhibits control method to start to calculate shore electric power in real time in simultaneously Chinese herbaceous peony against function
Instantaneous active power, determine whether high voltage shore power power supply is in and when vehicle by judging the fluctuation size of instantaneous active power
It carves, if so that high voltage shore power power supply is in quickly reception has in simultaneously vehicle moment, the output frequency of fast lifting shore electric power
The state of function so that and the reverse function that generates of vehicle moment quickly inhibited, even if guaranteeing there are a certain range of inverse function
Operating condition under also can smoothly realize Engagement；
2, the high voltage shore power power supply of the present embodiment inhibits control method can be by software realization, to will not increase hard against function
Part cost.
Detailed description of the invention
Fig. 1 shows the topological structure schematic diagram of existing high voltage shore power power supply.
Fig. 2 shows the schematic illustrations that active inverse function according to an embodiment of the invention inhibits control.
Fig. 3 shows the schematic illustration that passive type according to an embodiment of the invention inhibits control against function.
Specific embodiment
The present invention is described in detail with specific embodiment below in conjunction with the accompanying drawings.
High voltage shore power power supply according to an embodiment of the invention against function inhibit control method the following steps are included:
Step a, start the instantaneous active power P for calculating simultaneously Chinese herbaceous peony high voltage shore power power supply in real time before simultaneously vehicleout；
Step b, judge the instantaneous active power P of high voltage shore power power supplyoutAbsolute value | Pout| whether have greater than preset
Function power threshold Pth, if it is greater than active power threshold value Pth, then judge that high voltage shore power power supply has entered simultaneously car state, and control
The output frequency of high voltage shore power power supply promotes Fup。
Aforementioned step a further comprises:
Step a-1, the three-phase output voltage U of high voltage shore power power supply is acquired in real time before simultaneously vehiclea、UbAnd UcAnd three-phase
Export electric current Ia、IbAnd Ic；
Step a-2, by the three-phase output voltage U of high voltage shore power power supplya、UbAnd UcAnd three-phase exports electric current Ia、IbAnd Ic
Clarke transformation and Park transformation are successively carried out, the direct-axis voltage component U under two-phase rotating coordinate system is obtainedd, quadrature-axis voltage point
Measure Uq, direct-axis current component idWith quadrature axis current component iq；
Step a-3, the instantaneous active power P of simultaneously Chinese herbaceous peony high voltage shore power power supply is calculatedout:
Pout=3* (Ud*Id+Uq*Iq)。
In above-mentioned step b, once judge the instantaneous active power P of high voltage shore power power supplyoutAbsolute value | Pout| it is big
In preset active power threshold value Pth, then judge that high voltage shore power power supply has entered and car state, at this time no matter high voltage shore power power supply
With the presence or absence of inverse function, in simultaneously Chinese herbaceous peony high voltage shore power power supply output frequency FoOn the basis of rapidly by the defeated of high voltage shore power power supply
Frequency upgrading F outup, it is in high voltage shore power power supply and quickly receives active state.The output frequency of high voltage shore power power supply namely
The frequency for the three-phase alternating current that high voltage shore power power supply is exported.Optionally, active power threshold value PthValue range be 1Kw~
10Kw；FupValue range be 1Hz~5Hz.
High voltage shore power power supply can not detect other signals except its own, therefore can not directly judge shore electric power and ship
The high voltage shore power power supply at electric and vehicle moment, the present embodiment inhibits control method to start to calculate bank electricity electricity in real time in simultaneously Chinese herbaceous peony against function
The instantaneous active power in source, determines whether high voltage shore power power supply is in simultaneously vehicle by judging the fluctuation size of instantaneous active power
Moment, if being in high voltage shore power power supply in simultaneously vehicle moment, the output frequency of fast lifting shore electric power and quickly receiving
Active state so that and the reverse function that generates of vehicle moment quickly inhibited, even if guaranteeing there are a certain range of inverse
Also Engagement can be smoothly realized under the operating condition of function.
Above-mentioned step a and step b inhibits control strategy using active inverse function, and control principle please refers to Fig. 2.
If simultaneously vehicle moment shore electric power and ship electricity phase difference are within a certain range △ Ф (△ Ф is less than or equal to 20 ° in the present embodiment),
Under the sagging control action of PQ, the output frequency of the output frequency and ship electricity power supply of shore electric power will reach unanimity, whole system
It will be operate in stable state and car state, shore electric power works under certain active output state at this time, actively realizes the inhibition of inverse function.
Inhibit in strategy in active inverse function, for the stabilization for guaranteeing system, bank electricity output frequency quicklys increase value FupIt should not be too large, simultaneously
If vehicle moment bank electricity and ship electricity phase difference are more than △ Ф, system still can have a small amount of inverse probability.It is needed at this time according to height
The state of the busbar voltage of each power cell of voltage frequency changer further realizes the inhibition of inverse function, because of the liter of busbar voltage
Height is generated against function, therefore is claimed this control mode to can be described as passive type and inhibited strategy, control principle such as Fig. 3 institute against function
Show, the specific implementation steps are as follows:
Step c, the bus into each power cell of real-time detection high-voltage frequency converter after simultaneously car state after simultaneously vehicle
Voltage Vn calculates separately busbar voltage V of each power cell of high-voltage frequency converter after simultaneously vehiclenIt is each with being previously detected
Busbar voltage V' of the power cell in simultaneously Chinese herbaceous peonynBetween voltage difference delta V (calculating process is also real-time), Δ V=Vn?
V'nIf there is the voltage difference delta V after any one power cell and Chinese herbaceous peony to be more than or equal to preset voltage difference threshold value Vth, then judge
There is inverse function to generate；Optionally, voltage difference threshold value VthValue range be 30V~50V；
If step d, judgement has inverse function to generate, the output frequency of high voltage shore power power supply is promoted, until high-voltage frequency converter
Busbar voltage difference after all power cells and Chinese herbaceous peony is respectively less than voltage difference threshold value Vth。
Optionally, the output frequency of above-mentioned promotion high voltage shore power power supply refers to: making the output frequency of high voltage shore power power supply
Lifting values it is increasing as time increases, for example, output frequency improves after have passed through scheduled period of time T
One increment, after have passed through scheduled time cycle 2T, output frequency improves the second increment, and the second increment is greater than the first increment,
The rest may be inferred.In this case, the speed that inverse function is eliminated can be accelerated, high-voltage frequency converter is avoided to shut down because of DC bus over-voltage.
Further, in step d, if judgement has inverse function to generate, from thering is inverse function to generate from judgement at one
Between the output frequency of high voltage shore power power supply is promoted into F in cycle Tupb, by high voltage shore power power supply in two period of time T (2T)
Output frequency promoted 2Fupb, and so on, the output frequency of high voltage shore power power supply is promoted in N number of period of time T (NT)
N*Fupb, N is the integer more than or equal to 1, until all power cells and the busbar voltage difference Δ V after Chinese herbaceous peony of high-voltage frequency converter
Respectively less than voltage difference threshold value Vth, then stop iterative fast lifting high voltage shore power power supply output frequency.FupbValue range be
0.5Hz~3Hz, period of time T for example can be 1ms, but not limited to this.
Illustrate the course of work and principle of the invention below in conjunction with a specific application example.
In the application example, active power threshold value Pth=1Kw, when detect high voltage shore power system output instantaneous power it is absolute
When value is greater than the threshold values, then it is determined as the simultaneously vehicle moment, at this time by output frequency fast lifting 5Hz (the i.e. F of high voltage shore power power supplyup
=5Hz), to realize the fast transfer of ship electric loading in Engagement, guarantee that high voltage shore power voltage is in power output state,
The presence of inverse function is avoided as far as possible, or reduces the time existing for inverse function.During preceding method realization, inverse function does not press down completely
System causes the busbar voltage of some power cell of high-voltage frequency converter to rise 50V (i.e. △ V=50V), then combines passive type inverse
Function inhibits strategy, and the output frequency fast lifting N*F of high voltage shore power power supply is made by the way of iterationupb, N is iteration cycle, N
=5, iteration frequency Fupb=2Hz.
The control method can be realized by way of software the main control module 13 of high-voltage frequency converter, greatly improve
And vehicle success rate, and do not increase hardware cost.
A kind of high voltage shore power power supply is additionally provided according to still another embodiment of the invention and inhibits control device against function, including is deposited
Reservoir and processor.Memory is for storing program；Processor executes high voltage shore power electricity above-mentioned for loading described program
Source inhibits control method against function.
Above description is the further explanation done in conjunction with specific embodiment and attached drawing to the present invention.But it is of the invention
Obviously can implement in a variety of other methods different from this description, those skilled in the art can be without prejudice in the present invention
It promoted, deduced according to actual use situation in the case where appearance, therefore, the content of above-mentioned specific embodiment should not limit this hair
Specify fixed protection scope.
Claims (9)
1. high voltage shore power power supply inhibits control method against function, the high voltage shore power power supply includes high-voltage frequency converter, the high voltage variable
Every phase of frequency device has multiple power unit cascades, which is characterized in that the high voltage shore power power supply inhibits control method packet against function
Include following steps:
Step a, start the instantaneous active power P for calculating simultaneously Chinese herbaceous peony high voltage shore power power supply in real time before simultaneously vehicleout；
Step b, judge the instantaneous active power P of high voltage shore power power supplyoutAbsolute value | Pout| whether it is greater than preset wattful power
Rate threshold value Pth, if it is greater than the active power threshold value Pth, then judge that high voltage shore power power supply has entered simultaneously car state, and control
The output frequency of high voltage shore power power supply promotes Fup。
2. high voltage shore power power supply according to claim 1 inhibits control method against function, which is characterized in that the high pressure bank
Power supply inhibits control method against function further include:
Step c, the busbar voltage into each power cell of real-time detection high-voltage frequency converter after simultaneously car state after simultaneously vehicle,
Calculate separately each power cell of high-voltage frequency converter and vehicle after busbar voltage and each power cell for being previously detected
Voltage difference between the simultaneously busbar voltage of Chinese herbaceous peony, if there have the voltage difference after any one power cell and Chinese herbaceous peony to be more than or equal to be pre-
If voltage difference threshold value Vth, then judgement has inverse function to generate；
If step d, judgement has inverse function to generate, the output frequency of high voltage shore power power supply is promoted, until high-voltage frequency converter institute is active
Busbar voltage difference after rate unit and Chinese herbaceous peony is respectively less than the voltage difference threshold value Vth。
3. high voltage shore power power supply according to claim 2 inhibits control method against function, which is characterized in that the promotion is high
The output frequency of pressure shore electric power refers to: making the lifting values of the output frequency of high voltage shore power power supply as time increases increasingly
Greatly.
4. high voltage shore power power supply according to claim 2 inhibits control method against function, which is characterized in that the promotion is high
The output frequency of pressure shore electric power refers to: by high voltage shore power electricity in a period of time T from having inverse function to generate from judgement
The output frequency in source promotes Fupb, the output frequency of high voltage shore power power supply is promoted into 2F in two period of time Tupb, class according to this
It pushes away, the output frequency of high voltage shore power power supply is promoted into N*F in N number of period of time Tupb, N is the integer more than or equal to 1.
5. high voltage shore power power supply according to claim 4 inhibits control method against function, which is characterized in that FupbValue model
It encloses for 0.5Hz~3Hz.
6. high voltage shore power power supply as claimed in any of claims 2 to 5 inhibits control method against function, feature exists
In the voltage difference threshold value VthValue range be 30V~50V.
7. high voltage shore power power supply as claimed in any of claims 1 to 5 inhibits control method against function, feature exists
In the active power threshold value PthValue range be 1Kw~10Kw；FupValue range be 1Hz~5Hz.
8. high voltage shore power power supply according to claim 1 or 2 inhibits control method against function, which is characterized in that the step
Suddenly a includes:
Step a-1, the three-phase output voltage U of high voltage shore power power supply is acquired in real time before simultaneously vehiclea、UbAnd UcAnd three-phase output
Electric current Ia、IbAnd Ic；
Step a-2, by the three-phase output voltage U of high voltage shore power power supplya、UbAnd UcAnd three-phase exports electric current Ia、IbAnd IcSuccessively
Clarke transformation and Park transformation are carried out, the direct-axis voltage component U under two-phase rotating coordinate system is obtainedd, quadrature-axis voltage component Uq、
Direct-axis current component idWith quadrature axis current component iq；
Step a-3, the instantaneous active power P of simultaneously Chinese herbaceous peony high voltage shore power power supply is calculatedout: Pout=3* (Ud*Id+Uq*Iq)。
9. a kind of high voltage shore power power supply inhibits control device against function characterized by comprising
Memory, for storing program；
It is inverse to execute high voltage shore power power supply as described in any one of claim 1 to 8 for loading described program for processor
Function inhibits control method.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910326387.2A CN110048615A (en) | 2019-04-23 | 2019-04-23 | High voltage shore power power supply inhibits control method and its device against function |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910326387.2A CN110048615A (en) | 2019-04-23 | 2019-04-23 | High voltage shore power power supply inhibits control method and its device against function |
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|---|---|---|---|---|
| CN106026181A (en) * | 2016-07-25 | 2016-10-12 | 上海艾临科智能科技有限公司 | Ship shore power system |
| CN107069722A (en) * | 2017-06-27 | 2017-08-18 | 上海艾临科智能科技有限公司 | Bank electricity system electric signal with reverse-power protection sets device, method and system |
| CN107732900A (en) * | 2017-09-27 | 2018-02-23 | 广州航海学院 | A kind of ship connects bank electricity method and system |
| CN108306521A (en) * | 2018-02-08 | 2018-07-20 | 澄瑞电力科技（上海）有限公司 | A kind of high voltage shore power power supply major loop and its compound suppressing method of inverse probability |
| CN108493934A (en) * | 2018-04-16 | 2018-09-04 | 苏州英威腾电力电子有限公司 | A kind of shore electric power system and its shore electric power control method and device |
| CN208127880U (en) * | 2017-09-27 | 2018-11-20 | 广州航海学院 | A kind of ship connects bank electricity system |
| CN108923452A (en) * | 2018-07-27 | 2018-11-30 | 西安许继电力电子技术有限公司 | A kind of ship high voltage shore power power supply smart inverse probability process control method |
-
2019
- 2019-04-23 CN CN201910326387.2A patent/CN110048615A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106026181A (en) * | 2016-07-25 | 2016-10-12 | 上海艾临科智能科技有限公司 | Ship shore power system |
| CN107069722A (en) * | 2017-06-27 | 2017-08-18 | 上海艾临科智能科技有限公司 | Bank electricity system electric signal with reverse-power protection sets device, method and system |
| CN107732900A (en) * | 2017-09-27 | 2018-02-23 | 广州航海学院 | A kind of ship connects bank electricity method and system |
| CN208127880U (en) * | 2017-09-27 | 2018-11-20 | 广州航海学院 | A kind of ship connects bank electricity system |
| CN108306521A (en) * | 2018-02-08 | 2018-07-20 | 澄瑞电力科技（上海）有限公司 | A kind of high voltage shore power power supply major loop and its compound suppressing method of inverse probability |
| CN108493934A (en) * | 2018-04-16 | 2018-09-04 | 苏州英威腾电力电子有限公司 | A kind of shore electric power system and its shore electric power control method and device |
| CN108923452A (en) * | 2018-07-27 | 2018-11-30 | 西安许继电力电子技术有限公司 | A kind of ship high voltage shore power power supply smart inverse probability process control method |
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Application publication date: 20190723 |