CN107069722A - Bank electricity system electric signal with reverse-power protection sets device, method and system - Google Patents
Bank electricity system electric signal with reverse-power protection sets device, method and system Download PDFInfo
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- CN107069722A CN107069722A CN201710498629.7A CN201710498629A CN107069722A CN 107069722 A CN107069722 A CN 107069722A CN 201710498629 A CN201710498629 A CN 201710498629A CN 107069722 A CN107069722 A CN 107069722A
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- 230000005611 electricity Effects 0.000 title claims abstract description 133
- 238000000034 method Methods 0.000 title claims abstract description 26
- 238000007667 floating Methods 0.000 claims abstract description 89
- 238000005070 sampling Methods 0.000 claims abstract description 48
- 230000001360 synchronised effect Effects 0.000 claims description 48
- 230000000903 blocking effect Effects 0.000 claims description 10
- 238000006243 chemical reaction Methods 0.000 claims description 9
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- 230000015556 catabolic process Effects 0.000 description 2
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- 230000009471 action Effects 0.000 description 1
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- 230000005520 electrodynamics Effects 0.000 description 1
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- 239000010759 marine diesel oil Substances 0.000 description 1
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- 230000004048 modification Effects 0.000 description 1
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Classifications
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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
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
Abstract
This disclosure relates to which the bank electricity system electric signal with reverse-power protection sets device, method and system, the bank electricity system electric signal sets device to include sampling module, and the supply voltage and/or frequency of supply of ship electric system are obtained for sampling；PID tracking modules, for using the supply voltage and/or frequency of supply of pid algorithm ocean-range vessel electric system to generate floating voltage and/or tracking frequency, to cause floating voltage and/or tracking frequency to be more than or equal to the supply voltage and/or frequency of supply of ship electric system；Bank electricity system electric signal setup module, for the supply voltage and/or frequency of supply of bank electricity system to be set into floating voltage and/or tracking frequency.Device, method and system is set to avoid producing the inverse probability for flowing to bank electricity system according to the bank electricity system electric signal of the disclosure, so as to fundamentally effectively prevent the harm that inverse probability opposite bank electric system is caused.
Description
Technical field
The present invention relates to field of power electronics, more particularly to the bank electricity system electric signal setting dress with reverse-power protection
Put, method and system.
Background technology
In the past, it must be generated electricity in the ship of harbour landing pier using marine auxiliary for 24 hours one day, to meet ship electricity consumption
Demand.But, marine auxiliary is during work, and can burn substantial amounts of fuel, discharges substantial amounts of waste gas, also, meeting 24
Hour produces noise pollution incessantly, is unfavorable for energy conservation and environmental protection.In order to solve this problem, bank electricity system
Arise at the historic moment, can be by bank electricity system to the ship power supply in harbour landing pier.
Needed using bank electricity system to the ship power supply in harbour landing pier by bank electricity system and the progress of ship electric system
Simultaneous interconnecting.During simultaneous interconnecting, it is most likely that produce the inverse probability for flowing to bank electricity system or ship electric system, such as：Work as bank
When the voltage of electric system is more than the voltage of ship electric system, the inverse probability for flowing to ship electric system will be produced, when the electricity of ship electric system
When pressure is more than the voltage of bank electricity system, the inverse probability for flowing to bank electricity system will be produced.Inverse probability can influence marine diesel oil to generate electricity
The normal operation of unit, shortens its service life, can also make the capital equipment of bank electricity system --- and high-pressure frequency-conversion potential device is sent out
Heat, so as to cause IGPT (the Insulated Gate Bipolar Transistor, insulated gate pair as its key components
Bipolar transistor) thermal breakdown.
And in terms of inverse probability is tackled, the safeguard measure at present to ship electric system is more, and the protection of opposite bank electric system is arranged
Apply considerably less.
The content of the invention
In view of this, the disclosure technical problem to be solved is how opposite bank electric system carries out reverse-power protection.
Device is set there is provided a kind of bank electricity system electric signal with reverse-power protection according to the one side of the disclosure,
The bank electricity system electric signal sets device to include：Sampling module, is connected with ship electric system, and the ship electricity system is obtained for sampling
The supply voltage and/or frequency of supply of system；PID tracking modules, are connected with the sampling module, for being connect from the sampling module
The supply voltage and/or frequency of supply of the ship electric system are received, the supply voltage of the ship electric system is tracked using pid algorithm
And/or frequency of supply is to generate floating voltage and/or tracking frequency, to cause the floating voltage and/or tracking frequency to be more than
Equal to the supply voltage and/or frequency of supply of the ship electric system；Bank electricity system electric signal setup module, is tracked with the PID
Module and the connection of bank electricity system, for receiving the floating voltage and/or tracking frequency from the PID tracking modules, and by institute
The supply voltage and/or frequency of supply for stating bank electricity system are set to the floating voltage and/or tracking frequency.
For above-mentioned bank electricity system electric signal, device is set, in a kind of possible implementation, the bank electricity system electricity
Signal sets device also to include：Synchronous device control module, is filled with the sampling module, the PID tracking modules and the same period
Connection is put, the synchronous device is used to carry out simultaneous interconnecting, the synchronous device to the bank electricity system and the ship electric system
Control module is used for the supply voltage and/or frequency of supply that the ship electric system is received from the sampling module, and from the PID
Tracking module receives the floating voltage and/or tracking frequency, when monitoring that the floating voltage and/or tracking frequency be less than institute
When stating the supply voltage and/or frequency of supply of ship electric system, block signal is sent to the synchronous device, to cause the same period
Device is in blocking.
For above-mentioned bank electricity system electric signal, device, in a kind of possible implementation, the synchronous device control are set
Molding block, be additionally operable to when monitor the floating voltage and/or tracking frequency not less than the supply voltage of the ship electric system and/
Or during frequency of supply, unlocking signal is sent to the synchronous device, to cause the synchronous device to release the blocking.
For above-mentioned bank electricity system electric signal, device, in a kind of possible implementation, the PID tracking modules are set
For using the supply voltage and/or frequency of supply of the discrete pid algorithm tracking ship electric system to generate the floating voltage
And/or tracking frequency.
For above-mentioned bank electricity system electric signal, device, in a kind of possible implementation, the PID tracking modules are set
For using the supply voltage and/or frequency of supply of the following discrete pid algorithm tracking ship electric system to generate the tracking
Voltage and/or tracking frequency：AH(k+1)=(e(k+1)-e(k))×KP+e(k+1)×Ki+(e(k+1)-2e(k)+e(k-1))×Kd+AH(k)+
XH, wherein, AH(k+1)For the floating voltage and/or frequency of+1 generation of kth；e(k+1)=CH(k+1)-AH(k), wherein, CH(k+1)For
The supply voltage and/or frequency of supply of+1 ship electric system from sampling module reception of kth, AH(k)It is secondary for kth
Into floating voltage and/or tracking frequency；e(k)=CH(k)-AH(k-1), wherein, CH(k)Received for kth time from the sampling module
The ship electric system supply voltage and/or frequency of supply, AH(k-1)For the floating voltage and/or tracking frequency of -1 generation of kth
Rate；e(k-1)=CH(k-1)-AH(k-2), wherein, CH(k-1)For the confession of -1 ship electric system from sampling module reception of kth
Piezoelectric voltage and/or frequency of supply, AH(k-2)For the floating voltage and/or tracking frequency of -2 generations of kth；KPFor proportionality coefficient, Ki
For integral coefficient, KdFor differential coefficient, AH(k)For the floating voltage and/or tracking frequency of kth time generation, XH is nonnegative value.
According to another aspect of the present disclosure there is provided a kind of bank electricity system, the bank electricity system includes：Variable voltage variable frequency is filled
Put, be connected with power network, for receiving electric signal from the power network, and transformation and/or frequency conversion, the change are carried out to the electric signal
Pressure converter plant is connected via breaker with the ship electric system, controls the breaker to be in "on" position in synchronous device
In the case of, the electric signal after the variable voltage variable frequency device transformation and/or frequency conversion is supplied to ship；And according to claim
Bank electricity system electric signal any one of 1-5 sets device, with the variable voltage variable frequency device, the ship electric system and same
Phase device is connected respectively, for tracking the supply voltage and/or frequency of supply of the ship electric system to generate the floating voltage
And/or tracking frequency, to cause the floating voltage and/or tracking frequency to be more than or equal to the supply voltage of the ship electric system
And/or frequency of supply, and the output voltage and/or output frequency of the variable voltage variable frequency device are set to the floating voltage
And/or tracking frequency.
According to another aspect of the present disclosure, there is provided a kind of bank electricity system electric signal method to set up, the bank electricity system electricity
Signal method to set up includes：Sampling obtains the supply voltage and/or frequency of supply of ship electric system；It is described using pid algorithm tracking
The supply voltage and/or frequency of supply of ship electric system are to generate floating voltage and/or tracking frequency, to cause the floating voltage
And/or tracking frequency is more than or equal to the supply voltage and/or frequency of supply of the ship electric system；By the supply voltage of bank electricity system
And/or frequency of supply is set to the floating voltage and/or tracking frequency.
For above-mentioned bank electricity system electric signal method to set up, in a kind of possible implementation, the use pid algorithm
Track the supply voltage and/or frequency of supply of the ship electric system is included with generating floating voltage and/or tracking frequency：Using from
Pid algorithm is dissipated to track the supply voltage and/or frequency of supply of the ship electric system to generate the floating voltage and/or tracking frequency
Rate.
For above-mentioned bank electricity system electric signal method to set up, in a kind of possible implementation, the use Discrete PI D
The supply voltage and/or frequency of supply of ship electric system described in algorithm keeps track are to generate the floating voltage and/or tracking frequency bag
Include：Following discrete pid algorithm of sampling tracks the supply voltage and/or frequency of supply of the ship electric system to generate the tracking electricity
Pressure and/or tracking frequency：AH(k+1)=(e(k+1)-e(k))×KP+e(k+1)×Ki+(e(k+1)-2e(k)+e(k-1))×Kd+AH(k)+ XH,
Wherein, AH(k+1)For the floating voltage and/or frequency of+1 generation of kth；e(k+1)=CH(k+1)-AH(k), wherein, CH(k+1)For kth+
The supply voltage and/or frequency of supply of 1 ship electric system from sampling module reception, AH(k)For kth time generation
Floating voltage and/or tracking frequency；e(k)=CH(k)-AH(k-1), wherein, CH(k)The institute received for kth time from the sampling module
State the supply voltage and/or frequency of supply of ship electric system, AH(k-1)The floating voltage and/or tracking frequency generated for kth -1；
e(k-1)=CH(k-1)-AH(k-2), wherein, CH(k-1)For the power supply of -1 ship electric system from sampling module reception of kth
Voltage and/or frequency of supply, AH(k-2)For the floating voltage and/or tracking frequency of -2 generations of kth；KPFor proportionality coefficient, KiFor
Integral coefficient, KdFor differential coefficient, AH(k)For the floating voltage and/or tracking frequency of kth time generation, XH is nonnegative value.
For above-mentioned bank electricity system electric signal method to set up, in a kind of possible implementation, the bank electricity system electricity
Signal method to set up also includes：When monitoring that the floating voltage and/or tracking frequency be less than the power supply electricity of the ship electric system
When pressure and/or frequency of supply, block signal is sent to synchronous device, to cause the synchronous device to be in blocking；Work as prison
When measuring the floating voltage and/or tracking frequency and being not less than the supply voltage and/or frequency of supply of the ship electric system, to institute
State synchronous device and send unlocking signal, to cause the synchronous device to release the blocking.
The disclosure is by the supply voltage and/or frequency of supply of pid algorithm ocean-range vessel electric system, to cause bank electricity system
Supply voltage and/or frequency of supply are more than or equal to the supply voltage and/or frequency of ship electric system, so as to avoid generation from flowing to bank electricity
The inverse probability of system, fundamentally effectively prevent the harm that inverse probability opposite bank electric system is caused.
According to below with reference to the accompanying drawings to detailed description of illustrative embodiments, the further feature and aspect of the disclosure will become
It is clear.
Brief description of the drawings
Comprising in the description and constituting accompanying drawing and the specification of a part of specification and together illustrate the disclosure
Exemplary embodiment, feature and aspect, and for explaining the principle of the disclosure.
Fig. 1 shows to set the structured flowchart of device according to the bank electricity system electric signal of the embodiment of the disclosure one；
Fig. 2 shows the structured flowchart of the voltage setting device of the bank electricity system according to the embodiment of the disclosure one；
Fig. 3 shows the bank electricity systematic difference schematic diagram of a scenario according to the embodiment of the disclosure one；
Fig. 4 shows the flow chart of the bank electricity system electric signal method to set up according to the embodiment of the disclosure one.
Reference numerals list
100th, bank electricity system electric signal sets device
200th, bank electricity system
300th, ship electric system
110th, sampling module
120th, PID tracking modules
130th, bank electricity system electric signal setup module
140th, synchronous device control module
400th, synchronous device
210th, variable voltage variable frequency device
500th, breaker
Embodiment
Describe various exemplary embodiments, feature and the aspect of the disclosure in detail below with reference to accompanying drawing.It is identical in accompanying drawing
Reference represent the same or analogous element of function.Although the various aspects of embodiment are shown in the drawings, remove
Non-specifically is pointed out, it is not necessary to accompanying drawing drawn to scale.
Special word " exemplary " is meant " being used as example, embodiment or illustrative " herein.Here as " exemplary "
Illustrated any embodiment should not necessarily be construed as preferred or advantageous over other embodiments.
In addition, in order to better illustrate the disclosure, numerous details are given in embodiment below.
It will be appreciated by those skilled in the art that without some details, the disclosure can equally be implemented.In some instances, for
Method well known to those skilled in the art, means, element and circuit are not described in detail, in order to highlight the purport of the disclosure.
Embodiment 1
Before setting device to illustrate the bank electricity system electric signal of the embodiment of the disclosure one, inverse probability is produced first
Raw the reason for and harm carry out as described below.
It need to be connected when beaching with bank electricity system, in order to which bank electricity system is to the power supply for electrical equipment on ship；Ship offshore
When, it need to recover from ship electric system to the power supply for electrical equipment on ship.In said process, it is both needed to bank electricity system and ship electric system
Simultaneous interconnecting.
Synchronous device detects bank electricity system and when ship electric system meets same period condition, can be by bank electricity system and ship electric system
Simultaneous interconnecting.Frequency, voltage and the phase angle of the two systems of same period conditions permit have the frequency of certain difference, i.e. the two systems
The difference of rate, voltage and phase angle thinks to meet the same period condition when in the range of respective threshold, that is,.
In simultaneous interconnecting moment, it is most likely that produce the inverse probability for flowing to bank electricity system or ship electric system.
Inverse probability can be divided into two kinds：Active inverse probability and idle inverse probability, are due to two in being incorporated into the power networks respectively
Difference on the frequency or voltage difference of the system in grid-connected moment cause.Specifically, if the frequency of ship electric system is more than in grid-connected moment
The frequency of bank electricity system, it is possible to flow to the active inverse probability of bank electricity system, if the frequency of ship electric system is grid-connected
Moment be less than bank electricity system frequency, it is possible to flow to the active inverse probability of ship electric system；If ship electric system
Voltage is more than the voltage of bank electricity system in grid-connected moment, it is possible to flow to the idle inverse probability of bank electricity system, if
The voltage of ship electric system is less than the voltage of bank electricity system in grid-connected moment, it is possible to flow to the idle inverse of ship electric system
Power.
If it happens the active inverse probability of ship electric system is flowed to, then will produce the dash current of vibration, make diesel-driven generator
Produce vibration；If it happens the idle inverse probability of ship electric system is flowed to, then diesel-driven generator stator winding can be caused to generate heat, or
Stator winding end is caused to be damaged under electrodynamic action.Case above can all influence the normal operation of diesel-driven generator, and contract
Its short service life.For this case, the diesel-driven generator for being currently located at ship side is commonly configured with by changing its throttle
Or excitation eliminates the self-checking device of active or idle inverse probability, with reducing active or idle inverse probability ship electric system is made
Into infringement.
If it happens the active inverse probability or idle inverse probability of bank electricity system are flowed to, due to the equipment that bank electricity system is main
It is high-pressure frequency-conversion potential device, therefore in the case where producing active inverse probability and idle inverse probability, high-pressure frequency-conversion transformation can be made
Device generates heat, so as to cause its key components IGBT thermal breakdown.Bank electricity system how is protected, is protected it from active and idle
The infringement of inverse probability, is current urgent problem.Set therefore, the embodiment of the disclosure one provides a kind of bank electricity system electric signal
Device is put, the supply voltage and/or frequency of supply of bank electricity system is more than or equal to the power supply of ship electric system by PID tracing algorithms
Voltage and/or frequency of supply, so that the infringement caused by it fundamentally effectively prevent inverse probability opposite bank electric system.
Fig. 1 shows to set the structured flowchart of device 100 according to the bank electricity system electric signal of the embodiment of the disclosure one.Such as Fig. 1
Shown, the bank electricity system electric signal sets device 100 mainly to include：Sampling module 110, PID (proportion-
Integration-differentiation, proportional-integral-differential) tracking module 120 and bank electricity system electric signal set
Module 130.
Sampling module 110, is connected with ship electric system 300, and the supply voltage of the ship electric system 300 is obtained for sampling
And/or frequency of supply；PID tracking modules 120, are connected with the sampling module 110, for being received from the sampling module 110
The supply voltage and/or frequency of supply of the ship electric system 300, the power supply electricity of the ship electric system 300 is tracked using pid algorithm
Pressure and/or frequency of supply are to generate floating voltage and/or tracking frequency, to cause the floating voltage and/or tracking frequency big
In supply voltage and/or frequency of supply equal to the ship electric system 300；Bank electricity system electric signal setup module 130, it is and described
PID tracking modules 120 and bank electricity system 200 are connected, for from the PID tracking modules 120 receive the floating voltage and/or
Tracking frequency, and by the supply voltage and/or frequency of supply of the bank electricity system 200 be set to the floating voltage and/or with
Track frequency.
The embodiment of the disclosure one is by the supply voltage and/or frequency of supply of pid algorithm ocean-range vessel electric system, to cause bank
The supply voltage and/or frequency of supply of electric system are more than or equal to the supply voltage and/or frequency of supply of ship electric system, so as to avoid
The inverse probability for flowing to bank electricity system is produced, the harm that inverse probability opposite bank electric system is caused fundamentally is being effectively prevent.
Inventor has found that the scale of ship electric system is smaller by further investigation, its supply voltage and frequency of supply fluctuation compared with
Greatly, if the method tracked using difference, the same period condition within long period of time may be caused can not to be all met, nothing
Method carries out simultaneous interconnecting.By contrast, in the embodiment of the disclosure one, it is tracked using pid algorithm tracking module, tracking electricity
The supply voltage and/or frequency of supply of pressure and/or tracking frequency energy fast track ship electric system, are conducive to quickly realizing the same period simultaneously
Net.
When it is power supply for electrical equipment thereon that the ship for detecting landing pier, which needs bank electricity system 200, Ke Yiqi
Dynamic bank electricity system electric signal sets device 100.Sampling module 110 to the output voltage of the electric supply installation of ship electric system 300 and/or
Output frequency is sampled, to obtain the supply voltage and/or frequency of supply of ship electric system 300, for example, in a cycle, adopting
Egf block 110 can carry out 32 samplings to the output voltage and/or output frequency of the electric supply installation of ship electric system 300, obtain
32 supply voltages and/or 32 frequency of supplies, wherein, cycle is that alternating current completion one completely changes and returns to initial value
Process.It should be noted that the sampling number in a cycle is not fixed, can according to actual needs it be adjusted by user
Control.
In a kind of possible implementation, the PID tracking modules 120 are used for described using the tracking of discrete pid algorithm
The supply voltage and/or frequency of supply of ship electric system 300 are to generate the floating voltage and/or tracking frequency.
In one example, the PID tracking modules 120 are used to track the ship electricity system using following discrete pid algorithm
The supply voltage and/or frequency of supply of system 300 are to generate the floating voltage and/or tracking frequency：AH(k+1)=(e(k+1)-
e(k))×KP+e(k+1)×Ki+(e(k+1)-2e(k)+e(k-1))×Kd+AH(k)+ XH, wherein, AH(k+1)For the tracking of+1 generation of kth
Voltage and/or frequency；e(k+1)=CH(k+1)-AH(k), wherein, CH(k+1)For+1 ship from sampling module reception of kth
The supply voltage and/or frequency of supply of electric system, AH(k)For the floating voltage and/or tracking frequency of kth time generation；e(k)=
CH(k)-AH(k-1), wherein, CH(k)The supply voltage of the ship electric system received for kth time from the sampling module and/or confession
Electric frequency, AH(k-1)For the floating voltage and/or tracking frequency of -1 generation of kth；e(k-1)=CH(k-1)-AH(k-2), wherein,
CH(k-1)For the supply voltage and/or frequency of supply of -1 ship electric system from sampling module reception of kth, AH(k-2)
For the floating voltage and/or tracking frequency of -2 generations of kth；KPFor proportionality coefficient, KiFor integral coefficient, KdFor differential coefficient,
AH(k)For the floating voltage and/or tracking frequency of kth time generation, XH is nonnegative value.It will be appreciated by persons skilled in the art that
If being started counting up from the 0th time, then k is the positive integer more than or equal to 2.
Output (such as AH in above formula of usual pid algorithm(k)) around input (such as CH in above formula(k)) up and down ripple
It is dynamic.In this example, inventor in equation right-hand member by increasing the part of "+XH " so that AH(k)Around (CH(k)+ XH) up and down ripple
It is dynamic.When XH is more than 0, AH is advantageously reduced(k)Less than CH(k)Probability, so as to further prevent to flow to bank electricity system
Inverse probability.
Those skilled in the art can determine XH numerical value as needed.Under some scenes, the frequency of same period conditions permit
Difference is (+- 0.2% × A) --- (+- 0.5% × A), wherein, A represents target frequency.For example, A can be ship electric system
Benchmark frequency of supply, the benchmark frequency of supply of ship electric system common at present is 50Hz or 60Hz.Especially, due to ship electric system
300 scale is smaller, it is contemplated that it is (+- 0.5% × A) to allow frequency-splitting, then can use XH is (+0.5% × A).Supplied with benchmark
Electric frequency is exemplified by 60Hz, then can use XH is 0.3.
The calculating cycle of PID tracking modules and output cycle can determine according to actual conditions, for example, can be 0.1 second, originally
It is open that this is not limited.
Inventor is to KP、Ki、KdInfluence of the value to the performance of PID tracking modules is furtherd investigate and analyzed.
(1) Proportional coefficient KPInfluence to tracking performance
KPIncrease, the sensitivity of PID tracking modules can be improved, accelerate tracking velocity, the stable state for reducing PID tracking modules is missed
Difference.But KPWhen bigger than normal, the number of oscillation can be increased, and regulating time can be extended.KPWhen excessive, PID tracking modules may be caused
It is unstable.KPWhen too small, the sensitivity decrease of PID tracking systems may cause tracking velocity slow., can after a large amount of tests
Consider to set KPFor 0.1.
(2) integral coefficient KiInfluence to tracking performance
KiIt is smaller, can reduce the stability of PID tracking modules, but can reduce steady-state error, and then improve PID with
The control accuracy of track module.After a large amount of tests, it is contemplated that K is setiFor 0.4.
(3) differential coefficient KdInfluence to tracking performance
KdDynamic characteristic for adjusting PID tracking modules.KdWhen bigger than normal, overshoot is larger, and regulating time is shorter；KdPartially
Hour, overshoot is also larger, but regulating time is longer.Only KdValue it is moderate, can just make overshoot and regulating time compared with
It is small.After a large amount of tests, it is contemplated that K is setdFor 0.2 or 0.3.
It shown below two examples according to the embodiment ocean-range vessel electric system frequency of supply of the disclosure one.
In example 1：KPValue is 0.1, KiValue is 0.4, KdValue is 0.2 and XH values are 0.
Example 1
In example 2：KPValue is 0.1, KiValue is 0.4, KdValue is 0.3 and XH values are 0.
Example 2
According to above-mentioned example as can be seen that using the embodiment of the disclosure one so that tracking frequency AH(k)Can well with
The frequency of supply of track ship electric system.Especially, in above-mentioned example, the fluctuation range of the frequency of supply of ship electric system is much larger than usual
The actual fluctuation range of the frequency of supply of ship electric system, even and if in this case, obtained according to the embodiment of the disclosure one
Tracking frequency AH(k)Still tracking purpose can be realized well.
, equally can quick, closely ocean-range vessel electric system supply voltage, sheet using the embodiment of the disclosure one according to test
It is open that no longer this is repeated.
In a kind of possible implementation, as shown in Fig. 2 according to the bank electricity system telecommunications of the above-mentioned embodiment of the disclosure
Number set device 100 can also include：Synchronous device control module 140, with the sampling module 110, the PID tracking modules
120 and synchronous device 400 connect, the synchronous device 400 be used for the bank electricity system 200 and the ship electric system 300
Simultaneous interconnecting is carried out, the synchronous device control module 140 is used to receive the ship electric system 300 from the sampling module 110
Supply voltage and/or frequency of supply, and receive the floating voltage and/or tracking frequency from the PID tracking modules 120,
When monitoring that the floating voltage and/or tracking frequency be less than the supply voltage and/or frequency of supply of the ship electric system 300
When, block signal is sent to the synchronous device 400, to cause the synchronous device 400 to be in blocking.
As known to those skilled in the art, when synchronous device is in unlocking condition, if synchronous device is detected
Bank electricity system 200 and ship electric system 300 meet same period condition, then can close a floodgate to carry out simultaneous interconnecting.If ship electric system
Supply voltage and/or frequency of supply are slightly larger than the supply voltage and/or frequency of supply of bank electricity system, and difference is in same period condition
In the threshold range allowed, then same period condition is believed to satisfy, however, now carrying out simultaneous interconnecting, can still produce and flow to bank
The inverse probability of electric system 200.Therefore, in above-mentioned implementation, when synchronous device control module 140 detects floating voltage
And/or tracking frequency be less than ship electric system supply voltage and/or frequency of supply when, direct locking synchronous device, even if so that
Simultaneous interconnecting will not also be carried out by meeting same period condition, further avoid producing the inverse probability for flowing to bank electricity system.
The synchronous device control module 140, is additionally operable to monitor that the floating voltage and/or tracking frequency are not less than
When the supply voltage and/or frequency of supply of the ship electric system 300, unlocking signal is sent to the synchronous device 400, to cause
The synchronous device 400 releases the blocking.
It should be noted that it will be understood by those skilled in the art that how to pass through hardware (such as discrete hardware elements, integrated electricity
Road, the digital circuit based on gate device, analog circuit component, programmable hardware device (such as single-chip microcomputer, FPGA) and
More than any combination circuit system etc. for constituting) realize that the protective relaying device of any of the above-described embodiment of the disclosure is wrapped
The all parts included, are repeated no more here.
Embodiment 2
Fig. 3 shows the bank electricity systematic difference schematic diagram of a scenario according to the embodiment of the disclosure one.In Fig. 3 label and Fig. 1 and
Fig. 2 identical components have identical function, for simplicity, omit the detailed description to these components.
As shown in figure 3, bank electricity system 200 includes：Variable voltage variable frequency device 210, is connected with power network, for being connect from the power network
Electric signal (grid side voltage can be 10KV) is received, and transformation and/or frequency conversion, the variable voltage variable frequency dress are carried out to the electric signal
Put 210 to be connected with the ship electric system 300 (ship side voltage can be 6.6KV) via breaker 500, in synchronous device 400
Control the breaker 500 be in "on" position in the case of, through the variable voltage variable frequency device 210 by after transformation and/or frequency conversion
Electric signal be supplied to ship.
And bank electricity system electric signal shown in Fig. 1 and 2 sets device 100, with the variable voltage variable frequency device 210, described
Ship electric system 300 and synchronous device 400 are connected respectively, supply voltage and/or power supply for tracking the ship electric system 300
Frequency is to generate the floating voltage and/or tracking frequency, to cause the floating voltage and/or tracking frequency to be more than or equal to institute
State the supply voltage and/or frequency of supply of ship electric system 300, and by the output voltage of the variable voltage variable frequency device 210 and/or defeated
Go out set of frequency for the floating voltage and/or tracking frequency.
Similarly, the embodiment of the disclosure one propose bank electricity system 200, the output voltage of its variable voltage variable frequency device 210 and/or
Output frequency is more than or equal to the supply voltage and/or frequency of supply of ship electric system 300, so as to prevent the generation due to inverse probability
The infringement caused to bank electricity system 200.
Embodiment 3
Fig. 4 shows the flow chart of the bank electricity system electric signal method to set up according to the embodiment of the disclosure one.As shown in figure 4,
The bank electricity system electric signal method to set up includes：
Step 401, sampling obtain the supply voltage and/or frequency of supply of ship electric system.
Step 402, pid algorithm is used to track the supply voltage and/or frequency of supply of the ship electric system to generate tracking
Voltage and/or tracking frequency, to cause the floating voltage and/or tracking frequency to be more than or equal to the power supply electricity of the ship electric system
Pressure and/or frequency of supply.
In a kind of possible implementation, step 402 may include：The ship electric system is tracked using discrete pid algorithm
Supply voltage and/or frequency of supply to generate the floating voltage and/or tracking frequency.
In one example, use discrete pid algorithm track the supply voltage and/or frequency of supply of the ship electric system with
Generating the floating voltage and/or tracking frequency includes：Following discrete pid algorithm of sampling tracks the power supply electricity of the ship electric system
Pressure and/or frequency of supply are to generate the floating voltage and/or tracking frequency：AH(k+1)=(e(k+1)-e(k))×KP+e(k+1)×Ki
+(e(k+1)-2e(k)+e(k-1))×Kd+AH(k)+ XH, wherein, AH(k+1)For the floating voltage and/or frequency of+1 generation of kth；
e(k+1)=CH(k+1)-AH(k), wherein, CH(k+1)For the power supply electricity of+1 ship electric system from sampling module reception of kth
Pressure and/or frequency of supply, AH(k)For the floating voltage and/or tracking frequency of kth time generation；e(k)=CH(k)-AH(k-1), wherein,
CH(k)The supply voltage and/or frequency of supply of the ship electric system received for kth time from the sampling module, AH(k-1)For
The floating voltage and/or tracking frequency of k-1 generations；e(k-1)=CH(k-1)-AH(k-2), wherein, CH(k-1)Adopted for kth from described for -1 time
The supply voltage and/or frequency of supply for the ship electric system that egf block is received, AH(k-2)For the floating voltage of -2 generations of kth
And/or tracking frequency；KPFor proportionality coefficient, KiFor integral coefficient, KdFor differential coefficient, AH(k)For the floating voltage of kth time generation
And/or tracking frequency, XH is nonnegative value.
Step 403, the supply voltage and/or frequency of supply of bank electricity system be set to the floating voltage and/or tracking
Frequency.
In a kind of possible implementation, when monitoring that the floating voltage and/or tracking frequency be less than ship electricity
When the supply voltage and/or frequency of supply of system, block signal is sent to synchronous device, to cause the synchronous device is in close
Lock status.
In a kind of possible implementation, when monitoring that the floating voltage and/or tracking frequency be not less than the ship
When the supply voltage and/or frequency of supply of electric system, unlocking signal is sent to the synchronous device, to cause the synchronous device
Release the blocking.
The embodiment of the disclosure one is by the supply voltage and/or frequency of supply of pid algorithm ocean-range vessel electric system, to cause bank
The supply voltage and/or frequency of supply of electric system are more than or equal to the supply voltage and/or frequency of supply of ship electric system, so as to avoid
The inverse probability for flowing to bank electricity system is produced, the harm that inverse probability opposite bank electric system is caused fundamentally is being effectively prevent.
It is described above the presently disclosed embodiments, described above is exemplary, and non-exclusive, and
It is not limited to disclosed each embodiment.In the case of without departing from the scope and spirit of illustrated each embodiment, for this skill
Many modifications and changes will be apparent from for the those of ordinary skill in art field.The selection of term used herein, purport
The principle, practical application or the technological improvement to the technology in market of each embodiment are best being explained, or is leading this technology
Other those of ordinary skill in domain are understood that each embodiment disclosed herein.
Claims (10)
1. a kind of bank electricity system electric signal with reverse-power protection sets device, it is characterised in that the bank electricity system telecommunications
Number set device include：
Sampling module, is connected with ship electric system, and the supply voltage and/or frequency of supply of the ship electric system are obtained for sampling；
PID tracking modules, are connected with the sampling module, the power supply electricity for receiving the ship electric system from the sampling module
Pressure and/or frequency of supply, use pid algorithm to track the supply voltage and/or frequency of supply of the ship electric system to generate tracking
Voltage and/or tracking frequency, to cause the floating voltage and/or tracking frequency to be more than or equal to the power supply electricity of the ship electric system
Pressure and/or frequency of supply；
Bank electricity system electric signal setup module, is connected with the PID tracking modules and bank electricity system, for being tracked from the PID
Module receives the floating voltage and/or tracking frequency, and the supply voltage of the bank electricity system and/or frequency of supply are set
For the floating voltage and/or tracking frequency.
2. bank electricity system electric signal according to claim 1 sets device, it is characterised in that the bank electricity system electric signal
Device is set also to include：
Synchronous device control module, is connected, the same period with the sampling module, the PID tracking modules and synchronous device
Device is used to carry out simultaneous interconnecting to the bank electricity system and the ship electric system, and the synchronous device control module is used for from institute
Supply voltage and/or frequency of supply that sampling module receives the ship electric system are stated, and receives described from the PID tracking modules
Floating voltage and/or tracking frequency, when monitoring that the floating voltage and/or tracking frequency be less than the power supply of the ship electric system
When voltage and/or frequency of supply, block signal is sent to the synchronous device, to cause the synchronous device to be in latch like
State.
3. bank electricity system electric signal according to claim 2 sets device, it is characterised in that the synchronous device controls mould
Block, is additionally operable to work as supply voltage and/or the confession for monitoring that the floating voltage and/or tracking frequency are not less than the ship electric system
During electric frequency, unlocking signal is sent to the synchronous device, to cause the synchronous device to release the blocking.
4. bank electricity system electric signal according to claim 1 sets device, it is characterised in that the PID tracking modules are used
In using discrete pid algorithm to track the supply voltage and/or frequency of supply of the ship electric system with generate the floating voltage and/
Or tracking frequency.
5. bank electricity system electric signal according to claim 4 sets device, it is characterised in that the PID tracking modules are used
It is electric to generate the tracking in using following discrete pid algorithm to track the supply voltage and/or frequency of supply of the ship electric system
Pressure and/or tracking frequency：
AH(k+1)=(e(k+1)-e(k))×KP+e(k+1)×Ki+(e(k+1)-2e(k)+e(k-1))×Kd+AH(k)+ XH,
Wherein, AH(k+1)For the floating voltage and/or frequency of+1 generation of kth；
e(k+1)=CH(k+1)-AH(k), wherein, CH(k+1)For the confession of+1 ship electric system from sampling module reception of kth
Piezoelectric voltage and/or frequency of supply, AH(k)For the floating voltage and/or tracking frequency of kth time generation；
e(k)=CH(k)-AH(k-1), wherein, CH(k)The power supply electricity of the ship electric system received for kth time from the sampling module
Pressure and/or frequency of supply, AH(k-1)The floating voltage and/or tracking frequency generated for kth -1；
e(k-1)=CH(k-1)-AH(k-2), wherein, CH(k-1)For -1 ship electric system from sampling module reception of kth
Supply voltage and/or frequency of supply, AH(k-2)For the floating voltage and/or tracking frequency of -2 generations of kth；
KPFor proportionality coefficient, KiFor integral coefficient, KdFor differential coefficient, AH(k)Floating voltage and/or tracking for kth time generation
Frequency, XH is nonnegative value.
6. a kind of bank electricity system, it is characterised in that the bank electricity system includes：
Variable voltage variable frequency device, is connected with power network, for receiving electric signal from the power network, and carries out transformation to the electric signal
And/or frequency conversion, the variable voltage variable frequency device is connected via breaker with the ship electric system, in the synchronous device control open circuit
In the case that device is in "on" position, the electric signal after the variable voltage variable frequency device transformation and/or frequency conversion is supplied to ship；
And
Bank electricity system electric signal according to any one of claim 1-5 sets device, with the variable voltage variable frequency device, institute
State ship electric system and synchronous device connected respectively, for track the supply voltage and/or frequency of supply of the ship electric system with
The floating voltage and/or tracking frequency are generated, to cause the floating voltage and/or tracking frequency to be more than or equal to ship electricity
The supply voltage and/or frequency of supply of system, and the output voltage and/or output frequency of the variable voltage variable frequency device are set to
The floating voltage and/or tracking frequency.
7. a kind of bank electricity system electric signal method to set up, it is characterised in that the bank electricity system electric signal method to set up includes：
Sampling obtains the supply voltage and/or frequency of supply of ship electric system；
Pid algorithm is used to track the supply voltage and/or frequency of supply of the ship electric system to generate floating voltage and/or tracking
Frequency, to cause the floating voltage and/or tracking frequency to be more than or equal to the supply voltage and/or power supply frequency of the ship electric system
Rate；
The supply voltage and/or frequency of supply of bank electricity system are set to the floating voltage and/or tracking frequency.
8. bank electricity system electric signal method to set up according to claim 7, it is characterised in that the use pid algorithm with
The supply voltage and/or frequency of supply of ship electric system described in track are included with generating floating voltage and/or tracking frequency：
Discrete pid algorithm is used to track the supply voltage and/or frequency of supply of the ship electric system to generate the floating voltage
And/or tracking frequency.
9. bank electricity system electric signal method to set up according to claim 8, it is characterised in that the use Discrete PI D is calculated
The supply voltage and/or frequency of supply that method tracks the ship electric system are included with generating the floating voltage and/or tracking frequency：
Following discrete pid algorithm of sampling tracks the supply voltage and/or frequency of supply of the ship electric system to generate the tracking
Voltage and/or tracking frequency：
AH(k+1)=(e(k+1)-e(k))×KP+e(k+1)×Ki+(e(k+1)-2e(k)+e(k-1))×Kd+AH(k)+ XH,
Wherein, AH(k+1)For the floating voltage and/or frequency of+1 generation of kth；
e(k+1)=CH(k+1)-AH(k), wherein, CH(k+1)For the confession of+1 ship electric system from sampling module reception of kth
Piezoelectric voltage and/or frequency of supply, AH(k)For the floating voltage and/or tracking frequency of kth time generation；
e(k)=CH(k)-AH(k-1), wherein, CH(k)The power supply electricity of the ship electric system received for kth time from the sampling module
Pressure and/or frequency of supply, AH(k-1)The floating voltage and/or tracking frequency generated for kth -1；
e(k-1)=CH(k-1)-AH(k-2), wherein, CH(k-1)For -1 ship electric system from sampling module reception of kth
Supply voltage and/or frequency of supply, AH(k-2)For the floating voltage and/or tracking frequency of -2 generations of kth；
KPFor proportionality coefficient, KiFor integral coefficient, KdFor differential coefficient, AH(k)Floating voltage and/or tracking for kth time generation
Frequency, XH is nonnegative value.
10. bank electricity system electric signal method to set up according to claim 7, it is characterised in that the bank electricity system telecommunications
Number method to set up also includes：
When monitoring that the floating voltage and/or tracking frequency be less than the supply voltage and/or frequency of supply of the ship electric system
When, block signal is sent to synchronous device, to cause the synchronous device to be in blocking；
When monitoring the floating voltage and/or tracking frequency not less than the supply voltage of the ship electric system and/or power supply frequency
During rate, unlocking signal is sent to the synchronous device, to cause the synchronous device to release the blocking.
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