CN205123261U - Boats and ships bank electric system - Google Patents
Boats and ships bank electric system Download PDFInfo
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- CN205123261U CN205123261U CN201520962271.5U CN201520962271U CN205123261U CN 205123261 U CN205123261 U CN 205123261U CN 201520962271 U CN201520962271 U CN 201520962271U CN 205123261 U CN205123261 U CN 205123261U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/30—Reactive power compensation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/40—Arrangements for reducing harmonics
Abstract
The utility model relates to a boats and ships bank electric system, it is connected respectively with boats and ships and electric wire netting, include: distribution portion, with the electric wire netting is connected, is used for following grid voltage is received to the electric wire netting, and right the electric wire netting carries out reactive compensation and the harmonic is administered, and transformer portion, with distribution portion connects, is used for following distribution portion receives grid voltage, and it is right grid voltage carries out vary voltage and/or frequency conversion transformer portion with under the condition that boats and ships are connected, conversion voltage supply after transformer inferior officer vary voltage and/or the frequency conversion extremely boats and ships. The power supply system frequency of no matter stopping at the boats and ships of pier is still right and wrong 50Hz of 50Hz, according to the utility model discloses boats and ships bank electric system can both connect the power supply system of boats and ships, satisfies the boats and ships power consumption. In addition, according to the utility model discloses boats and ships bank electric system can also carry out reactive compensation and harmonic improvement to the electric wire netting to ensure can not pollute by the harmonic generation the grid power system.
Description
Technical field
The utility model relates to field of power electronics, particularly relates to a kind of shipping shore power system.
Background technology
In the past, must generate electricity, to meet the demand of boats and ships electricity consumption by one day 24 hours employing marine auxiliarys at the boats and ships of harbour landing pier.But subsidiary engine burns a large amount of oil plants at work, discharge a large amount of waste gas, and 24 hours produces noise pollution incessantly.
In order to address this problem, mode boats and ships being accessed harbour distribution network can be adopted, utilize electric power system on the bank to the ship power supply of landing pier.But because the boats and ships electricity consumption frequency of every country is different, therefore, when the frequency of harbour distribution network is not identical with boats and ships electricity consumption frequency, boats and ships cannot use the electric energy provided by harbour.
Utility model content
In view of this, the technical problems to be solved in the utility model is, how to meet the boats and ships electricity consumption resting in harbour.
In order to solve the problems of the technologies described above, according to an aspect of the present utility model, provide a kind of shipping shore power system, it is connected respectively with boats and ships and electrical network, comprise: distribution portion, being connected with described electrical network, for receiving line voltage from described electrical network, and reactive power compensation and harmonic wave control being carried out to described electrical network; And power transformation portion, be connected with described distribution portion, for receiving described line voltage from described distribution portion, and transformation and/or frequency conversion are carried out to described line voltage, when described power transformation portion is connected with described boats and ships, the changing voltage after transformation and/or frequency conversion is supplied to described boats and ships by described power transformation portion.
For above-mentioned shipping shore power system, in a kind of possible implementation, described distribution portion comprises power quality controlling device, and described power quality controlling device comprises: Current Transmit, is connected with described electrical network, for gathering the electric current in described electrical network; Computing module, is connected with described CT, and for receiving described electric current from described CT, and according to described electric current determination idle component information and harmonic component information, wherein, described harmonic component information is for determining amplitude and the direction of harmonic current in electrical network; And control module, be connected with described computing module, for receiving described idle component information and described harmonic component information from described computing module, and send power quality controlling signal, wherein, described power quality controlling signal comprises reactive power compensation drive singal and harmonic wave control drive singal.
For above-mentioned shipping shore power system, in a kind of possible implementation, described power quality controlling device also comprises: reactive compensation module, be connected with described control module, for receiving described reactive power compensation drive singal from described control module, and produce reactive power compensation electric current according to described reactive power compensation drive singal; And active power filtering module, be connected with described control module, for receiving described harmonic wave control drive singal from described control module, and produce harmonic compensation current according to described harmonic wave control drive singal, wherein, described harmonic compensation current is contrary with the direction of described harmonic current and amplitude is equal.
For above-mentioned shipping shore power system, in a kind of possible implementation, described power quality controlling device also comprises: reactive power compensation output interface, be connected respectively with described electrical network and described reactive compensation module, described reactive compensation module exports described reactive power compensation electric current via described reactive power compensation output interface to described electrical network; And active power filtering output interface, be connected respectively with described electrical network and described active power filtering module, described active power filtering module exports described harmonic compensation current via described active power filtering output interface to described electrical network.
For above-mentioned shipping shore power system, in a kind of possible implementation, described power quality controlling device also comprises: power quality controlling Executive Module, be connected with described control module, for receiving described power quality controlling signal from described control module, and produce power quality controlling electric current according to described power quality controlling signal, wherein, described power quality controlling electric current is the electric current after reactive power compensation electric current and harmonic compensation current superpose, described reactive power compensation electric current is produced according to described reactive power compensation drive singal, described harmonic compensation current is produced according to described harmonic wave control drive singal, described harmonic compensation current is contrary with described harmonic current direction and amplitude is equal.
For above-mentioned shipping shore power system, in a kind of possible implementation, described power quality controlling device also comprises: power quality controlling output interface, be connected respectively with described electrical network and described power quality controlling Executive Module, described power quality controlling Executive Module exports described power quality controlling electric current via described power quality controlling output interface to described electrical network.
For above-mentioned shipping shore power system, in a kind of possible implementation, described distribution portion is also for power distribution, and described distribution portion also comprises: distribution portion bus; Electrical network incoming line cabinet, is connected respectively with described electrical network and described distribution portion bus, for receiving described line voltage from described electrical network, and described line voltage is supplied to described distribution portion bus; Distribution portion PT cabinet, is connected with described distribution portion bus, for powering to measuring instrument and protective relaying device, to detect the operating voltage of described distribution portion circuit, power and electric energy; Bank electricity outgoing line cabinet, is connected with described distribution portion bus, for described line voltage is supplied to described power transformation portion; Distribution portion change cabinet used, is connected with described distribution portion bus, for providing the work electricity consumption in described distribution portion; And SVG outgoing line cabinet, be connected with described power quality controlling device, for described line voltage is supplied to described power quality controlling device, and export described reactive power compensation electric current and described harmonic compensation current to described electrical network.
For above-mentioned shipping shore power system, in a kind of possible implementation, described power transformation portion comprises: variable-frequency variable-voltage device, is connected, for carrying out transformation and/or frequency conversion to described line voltage with described bank electricity outgoing line cabinet; Isolating transformer, is connected with described variable-frequency variable-voltage device, for Isolation and the lightning protection of described power transformation portion circuit; Power transformation portion bus; Changing voltage incoming line cabinet, is connected respectively with described isolating transformer and power transformation portion bus, for receiving the changing voltage after described variable-frequency variable-voltage device transformation and/or frequency conversion, and described changing voltage is supplied to described power transformation portion bus; Power transformation portion PT cabinet, is connected with described power transformation portion bus, for powering to measuring instrument and protective relaying device, to detect the operating voltage of described power transformation portion circuit, power and electric energy; Power transformation portion change cabinet used, is connected with described power transformation portion bus, for providing the work electricity consumption in described power transformation portion; And boats and ships outgoing line cabinet, be connected with described power transformation portion bus, for described changing voltage is supplied to described boats and ships.
For above-mentioned shipping shore power system, in a kind of possible implementation, described power transformation portion also comprises: frequency self-adaption intelligent electric meter, be connected between described power transformation portion bus and described changing voltage incoming line cabinet and between described power transformation portion bus and described boats and ships outgoing line cabinet, for carrying out frequency self-adaption, to ensure the accuracy measured at different frequencies according to the actual boats and ships electricity consumption frequency detected; And frequency self-adaption relay protector; be connected between described power transformation portion bus and described changing voltage incoming line cabinet and between described power transformation portion bus and described boats and ships outgoing line cabinet; for carrying out frequency self-adaption, to ensure the accuracy protected at different frequencies according to the actual boats and ships electricity consumption frequency detected.
The shipping shore power system of the utility model embodiment is provided with power transformation portion, carries out transformation and/or frequency conversion to line voltage, and when power transformation portion is connected with boats and ships, the changing voltage after transformation and/or frequency conversion can be supplied to boats and ships by power transformation portion.Like this, the electric power system frequency no matter resting in the boats and ships of harbour is 50Hz is also non-50Hz, can both connect the electric power system of boats and ships, meet boats and ships electricity consumption according to the shipping shore power system of the utility model embodiment.
In addition, the shipping shore power system according to the utility model embodiment is also provided with distribution portion, can carry out reactive power compensation and harmonic wave control to electrical network, thus guarantees can not produce harmonic pollution to grid power system.
According to below with reference to the accompanying drawings to detailed description of illustrative embodiments, further feature of the present utility model and aspect will become clear.
Accompanying drawing explanation
Comprise in the description and form the accompanying drawing of a part for specification and specification together illustrates exemplary embodiment of the present utility model, characteristic sum aspect, and for explaining principle of the present utility model.
Fig. 1 illustrates the generalized schematic of the shipping shore power system according to the utility model embodiment;
Fig. 2 illustrates the schematic diagram of the power quality controlling device included by the distribution portion in the shipping shore power system of the utility model embodiment;
Fig. 3 illustrates another schematic diagram of the power quality controlling device included by the distribution portion in the shipping shore power system of the utility model embodiment;
Fig. 4 illustrates the detailed maps of the shipping shore power system according to the utility model embodiment.
Embodiment
Various exemplary embodiment of the present utility model, characteristic sum aspect is described in detail below with reference to accompanying drawing.The same or analogous element of Reference numeral presentation function identical in accompanying drawing.Although the various aspects of embodiment shown in the drawings, unless otherwise indicated, accompanying drawing need not be drawn in proportion.
Word " exemplary " special here means " as example, embodiment or illustrative ".Here need not be interpreted as being better than or being better than other embodiment as any embodiment illustrated by " exemplary ".
In addition, in order to better the utility model is described, in embodiment hereafter, give numerous details.It will be appreciated by those skilled in the art that do not have some detail, the utility model can be implemented equally.In some instances, the method known for those skilled in the art, means, element and circuit are not described in detail, so that highlight purport of the present utility model.
Fig. 1 illustrates the skeleton diagram of the shipping shore power system according to the utility model one embodiment.As shown in Figure 1, this shipping shore power system 100 can be connected respectively with boats and ships 200 and electrical network 300, and shipping shore power system 100 mainly comprises: distribution portion 110 and power transformation portion 120.Wherein, distribution portion 110 can be connected with electrical network 300, for receiving line voltage from electrical network 300 electric power system power source, and carries out reactive power compensation and harmonic wave control to electrical network 300; Power transformation portion 120 can be connected with distribution portion 110, for receiving line voltage from distribution portion 110, and carries out transformation and/or frequency conversion to line voltage.When power transformation portion 120 is connected with boats and ships 200, the changing voltage after transformation and/or frequency conversion is supplied to boats and ships 200 by power transformation portion 120.
In a kind of possible implementation, the shipping shore power system 100 of the utility model embodiment can be connected with boats and ships 200 via boats and ships access point (being schematically shown by reference number C in Fig. 1).Boats and ships 200 can comprise electric substation 210 peculiar to vessel and various electrical equipment peculiar to vessel 220.Such as, shipping shore power system 100 receives the voltage of 10kV from electrical network 300, after transformation, become 6kV, be then supplied to boats and ships 200 via boats and ships access point C, the voltage transitions of 6kV is voltage, the such as 400V that electrical equipment 220 peculiar to vessel is suitable for by the electric substation peculiar to vessel 210 itself carried by boats and ships 200.
In addition, because the boats and ships electricity consumption frequency of every country is different, based on 50Hz, but the boats and ships electricity consumption frequency also having many countries is 60Hz, therefore, will adapt to the electricity consumption frequency of these boats and ships to the frequency of ship power supply.The shipping shore power system of the utility model embodiment is provided with power transformation portion, can carries out transformation and/or frequency conversion to the line voltage of electrical network, therefore, what can connect any country comprises the ship power supply system that electricity consumption frequency is 50Hz and non-50Hz.
In other words, by being provided with power transformation portion, carry out transformation and/or frequency conversion to the line voltage of electrical network, when power transformation portion is connected with boats and ships, the changing voltage after transformation and/or frequency conversion is supplied to described boats and ships by power transformation portion.Therefore, the electric power system frequency no matter resting in the boats and ships of harbour is 50Hz is also non-50Hz, can both connect the electric power system of boats and ships, meet boats and ships electricity consumption according to the shipping shore power system of the utility model embodiment.
In addition, the shipping shore power system according to the utility model embodiment is also provided with distribution portion, can carry out reactive power compensation and harmonic wave control to electrical network, thus guarantees can not produce harmonic pollution to grid power system.
In a kind of possible implementation, power quality controlling device 111 can be comprised according to the distribution portion 110 in the shipping shore power system of the utility model one embodiment.Shown in the schematic diagram of power quality controlling device as shown in Figure 2, power quality controlling device 111 can comprise: and current transformer (English: CurrentTransformer, CT) 1113, computing module 1114 and control module 1115 abbreviation:.Wherein, CT1113 can be connected with electrical network 300, for gathering the electric current in electrical network 300 electric power system, computing module 1114 can be that digital signal processor is (English: DigitalSignalProcessor, abbreviation: DSP), it can be connected with CT1113, for from CT1113 received current, and according to this electric current determination idle component information and harmonic component information, such as can be (English: FastFourierTransform by carrying out fast fourier transform to side harmonics, abbreviation: FFT) and synchronous rotating frame (English: SynchronousRotatingFrame, abbreviation: SRF) convert, determine idle component situation and the pre-determined number harmonic component situation of such as less than 65 times, wherein, harmonic component information is for determining amplitude and the direction of harmonic current in electrical network, control module 1115 can be connected with computing module 1114, for receiving idle component information and harmonic component information from computing module 1114, and power quality controlling signal can be sent in such as 50 μ s, wherein, power quality controlling signal can comprise reactive power compensation drive singal and harmonic wave control drive singal.
In a kind of possible implementation, as shown in Figure 2, can also comprise according to the power quality controlling device 111 of the utility model embodiment: reactive compensation module 1111 and active power filtering module 1112.Wherein, reactive compensation module 1111 can be connected with control module 1115, for receiving reactive power compensation drive singal from control module 1115, and produces reactive power compensation electric current according to reactive power compensation drive singal; Active power filtering module 1112 also can be connected with control module 1115, for receiving harmonic wave control drive singal from control module 1115, and produce harmonic compensation current according to harmonic wave control drive singal, wherein, harmonic compensation current is contrary with the direction of harmonic current and amplitude is equal.
In a kind of possible implementation, the power quality controlling device 111 according to the utility model embodiment can also comprise: reactive power compensation output interface (not shown) and active power filtering output interface (not shown).Wherein, reactive power compensation output interface can be connected respectively with electrical network 300 and reactive compensation module 1111, and reactive compensation module 1111 exports reactive power compensation electric current via reactive power compensation output interface to electrical network 300; Active power filtering output interface can be connected respectively with electrical network 300 and active power filtering module 1112, active power filtering module 1112 via active power filtering output interface to electrical network 300 output harmonic wave offset current.
In a kind of possible implementation, as shown in Figure 2, reactive power compensation output interface and the reactor for level and smooth institute output waveform and the pre-charge contactor for circuit protection and circuit breaker etc. can also be connected with between active power filtering output interface and electrical network.
In addition, for convenience of explanation, as shown in Figure 2,1. the system power of the electric power system of electrical network 300 is schematically shown by oscillogram, 2. the electric current collected through CT1113 is schematically shown by oscillogram, 3. schematically shown the reactive power compensation electric current exported by reactive compensation module 1111 by oscillogram, 4. schematically shown the harmonic compensation current exported by active power filtering module 1112 by oscillogram.
Like this, the power quality controlling device of the utility model embodiment gathers current harmonics by the CT of net side, calculate fast through high-speed dsp, FFT fast Fourier transform and SRF synchronous rotating angle method are carried out to side harmonics, thus less than 65 times harmonic components and idle component situation can be determined, and action sends current order in 50 μ s, the compensation harmonic electric current equal with harmonic source harmonic current direction opposite magnitude and reactive power compensation electric current is produced by power actuators part, and inject grid power system, reach the effect and reactive power compensation of offsetting the harmonic current that nonlinear-load produces.
It should be noted that, although describe the power actuators part of power quality controlling device 111 as above for reactive compensation module 1111 and active power filtering module 1112 as two independent modules, but it will be appreciated by those skilled in the art that the utility model should be not limited thereto.In fact, the electronic device of the function of function and the above-mentioned active power filtering module 1112 simultaneously realizing above-mentioned reactive compensation module 1111 can also be integrated with in a module, reactive power compensation and filtering harmonic wave can be realized to make this module.The following detailed description of this implementation.
As shown in Figure 3, in this implementation, power quality controlling device 111 is except comprising CT1113, computing module 1114 and control module 1115, power quality controlling Executive Module 1110 can also be comprised, the module that can realize reactive power compensation and filtering harmonic wave that this power quality controlling Executive Module 1110 is that is above-mentioned.Wherein, CT1113, annexation between computing module 1114 and control module 1115 and the function that can realize with above-mentioned with reference to Fig. 2 illustrate identical, repeat no more here.Unlike, in fig. 2, control module 1115 is connected with reactive compensation module 1111 and active power filtering module 1112 respectively, in figure 3, control module 1115 is connected with power quality controlling Executive Module 1110, power quality controlling Executive Module 1110 can receive power quality controlling signal from control module 1115, and produces power quality controlling electric current according to power quality controlling signal.Wherein, power quality controlling electric current is the electric current after reactive power compensation electric current and harmonic compensation current superpose, reactive power compensation electric current is produced according to reactive power compensation drive singal, produce harmonic compensation current according to harmonic wave control drive singal, harmonic compensation current is contrary with harmonic current direction and amplitude is equal.
In this implementation, power quality controlling device 111 can also comprise power quality controlling output interface.Wherein, power quality controlling output interface (not shown) is connected respectively with electrical network 300 and power quality controlling Executive Module 1110, and power quality controlling Executive Module 1110 exports power quality controlling electric current via power quality controlling output interface to electrical network 300.In a kind of possible implementation, as shown in Figure 3, the reactor for smooth waveform and the pre-charge contactor for circuit protection and circuit breaker etc. can also be connected with between power quality controlling output interface and electrical network.
In addition, the implication of oscillogram 1. with 2. represented is identical with Fig. 2 in figure 3, the system power waveform that namely electric power system of electrical network 300 is shown respectively and the current waveform collected through CT1113; And the schematic diagram of reactive power compensation current waveform that 3. oscillogram produces according to the reactive power compensation drive singal in power quality controlling signal for power quality controlling Executive Module 1110, the schematic diagram of the harmonic compensation current waveform that 4. oscillogram produces according to the harmonic wave control drive singal in power quality controlling signal for power quality controlling Executive Module 1110.The power quality controlling electric current that power quality controlling device 111 exports is the electric current after reactive power compensation electric current and harmonic compensation current superpose, and therefore, its waveform is by the waveform of oscillogram 3. and after 4. superposing, and does not do further diagram here.
The bank electric system of the utility model embodiment selects wisdom power quality controlling device, namely above-mentioned power quality controlling device 111, for reactive power compensation and the harmonic wave control of bank electric system, decreases equipment land used and integrated cost.Further, wisdom power quality controlling device not only can compensating reactive power, can also administer such as 65 times (containing 65 times) harmonic waves below, under therefore system may be simultaneously operated in reactive power compensation and harmonic compensation two kinds of operating states simultaneously.In addition, wisdom power quality controlling device can not produce the danger of resonance while compensating reactive power with improvement harmonic wave, also there is not overload problem simultaneously.When System Reactive Power and harmonic current increase above the compensation ability of device, filter still can play maximum compensating action.And, in wisdom power quality controlling device, adopt functional module formula to design, be easy to combination, adapt to user's request to greatest extent to realize the optimum balance of operational effect and cost, structure in parallel makes transformation and grassroot project site operation and operation safe and reliable more flexibly.
In a kind of possible implementation, the distribution portion according to the utility model embodiment can also be used for power distribution, and in this implementation, distribution portion 110 can also comprise bus and each power distribution cabinet.Particularly, as shown in Figure 4, distribution portion 110 can also comprise: distribution portion bus 112; Electrical network incoming line cabinet 113, is connected respectively with electrical network 300 and distribution portion bus 112, for receiving line voltage from electrical network 300, and line voltage is supplied to distribution portion bus 112; Distribution portion voltage transformer is (English: PotentialTransformer, abbreviation: PT) cabinet 114, be connected with distribution portion bus 112, for powering to measuring instrument and protective relaying device, to detect the operating voltage of distribution portion 110 circuit, power and electric energy; Bank electricity outgoing line cabinet 115, is connected with distribution portion bus 112, for line voltage is supplied to power transformation portion 120; Distribution portion change cabinet 116 used, is connected with distribution portion bus 112, for providing the work electricity consumption in distribution portion 110; And SVG outgoing line cabinet 117, be connected with power quality controlling device 111, for line voltage is supplied to power quality controlling device 111, and export reactive power compensation electric current and harmonic compensation current to electrical network 300.
In a kind of possible implementation, as shown in Figure 4, can comprising according to the power transformation portion in the shipping shore power system of the utility model embodiment: variable-frequency variable-voltage device 121, being connected, for carrying out transformation and/or frequency conversion to line voltage with bank electricity outgoing line cabinet 115; Isolating transformer 122, is connected with variable-frequency variable-voltage device 121, for Isolation and the lightning protection of power transformation portion 120 circuit; Power transformation portion bus 123; Changing voltage incoming line cabinet 124, is connected respectively with isolating transformer 122 and power transformation portion bus 123, for receiving the changing voltage after variable-frequency variable-voltage device 121 transformation and/or frequency conversion, and changing voltage is supplied to power transformation portion bus 123; Power transformation portion PT cabinet 125, is connected with power transformation portion bus 123, for powering to measuring instrument and protective relaying device, to detect the operating voltage of power transformation portion 120 circuit, power and electric energy; Power transformation portion change cabinet 126 used, is connected with power transformation portion bus 123, for providing the work electricity consumption in power transformation portion 120; And chain boats and ships outgoing line cabinet 127-1 and 127-2 each other, be connected with power transformation portion bus 123, for changing voltage is supplied to boats and ships 200.
It should be noted that, as shown in Figure 4, variable voltage variable frequency device 121 can comprise shifts to transformer 1211, is connected with bank electricity outgoing line cabinet 115; Power cabinet 1212, and shifts to transformer 1211 and is connected; Filter cabinet 1213, is connected respectively with power cabinet 1212 and isolating transformer 122.
In a kind of possible implementation, as shown in Figure 4, can also comprise according to the power transformation portion in the shipping shore power system of the utility model embodiment: frequency self-adaption intelligent electric meter 128 and frequency self-adaption relay protector (not shown).Wherein, frequency self-adaption intelligent electric meter 128 can be connected between power transformation portion bus 123 and changing voltage incoming line cabinet 124, power transformation portion bus 123 and boats and ships outgoing line cabinet 127-1 and between power transformation portion bus 123 and boats and ships outgoing line cabinet 127-2, for carrying out frequency self-adaption, to ensure the accuracy measured at different frequencies according to the actual boats and ships electricity consumption frequency detected; With frequency self-adaption intelligent electric meter 128 similarly; frequency self-adaption relay protector also can be connected between power transformation portion bus 123 and changing voltage incoming line cabinet 124, power transformation portion bus 123 and boats and ships outgoing line cabinet 127-1 and between power transformation portion bus 123 and boats and ships outgoing line cabinet 127-2; for carrying out frequency self-adaption, to ensure the accuracy protected at different frequencies according to the actual boats and ships electricity consumption frequency detected.
As shown in Figure 4, according to the bank electric system of the present embodiment, access 10kV voltage from electrical network 300, via the outlet of bank electricity outgoing line cabinet 115, by high-pressure frequency-conversion potential device 121 variable-frequency variable-voltage to such as 6.6kV, through isolating transformer 122, to ship power supply system power supply.The present embodiment ship power supply system voltage is 6.6KV, and frequency can according to the original system frequency setting of boats and ships.Native system is connecting boats and ships electric power system side (this legend is 6.6KV) the frequency self-adaption intelligent electric meter that configures and frequency self-adaption relaying protection all can be used in the electric power system of any frequency; namely the intelligent electric meter of native system and relaying protection frequency can self adaptations; they can carry out the self adaptation of algorithm according to the actual electricity consumption frequency measured, to guarantee the accuracy of metering and protection in electric power system at different frequencies.
The advantage of shipping shore power system of the present utility model is described for the feature of boats and ships electricity consumption below.Boats and ships electricity consumption has following feature usually:
1, the boats and ships electricity consumption frequency of various countries is different, based on 50HZ, but also has many country 60HZ.Therefore, its electricity consumption frequency to be adapted to the frequency of ship power supply.
2, boats and ships electricity consumption is based on inductive load, and as water pump, hoisting equipment etc., therefore its power factor is lower, generally below 0.7.
3, boats and ships power consumption equipment starts frequent, and voltage fluctuation is large, also needs to suppress voltage fluctuation.
4, advanced boats and ships electric loading, has used various frequency conversion equipment and computer and communication apparatus, has therefore produced a large amount of harmonic pollutions.
Present inventor is for the above feature of boats and ships electricity consumption, and novelty proposes shipping shore power system of the present utility model, and according to above-described embodiment, shipping shore power system of the present utility model can frequency self-adaption, and has the following advantages:
1, can the frequency of supply of the electric power system of self-adaptive ship own, native system has powerful high voltage frequency converter, can connect the ship power supply system of 50HZ and non-50HZ.Electric power system frequency due to some country of the whole world is non-50HZ, so its ship power supply system frequency is also often be non-50HZ.And this shipping shore power system can connect the ship power supply system of any country.In addition, above-described embodiment is illustrated for 6.6KV, but those skilled in the art will be understood that native system can the ship power supply system of the different electric pressure of self adaptation, also can give the ship power supply system power supply of other electric pressure.
2, due to boats and ships electric loading, used various frequency conversion equipment and computer and communication apparatus, therefore produce a large amount of harmonic pollutions, and native system has been provided with powerful high voltage frequency converter, also can produces harmonic pollution.In order to eliminate the harmonic pollution that boats and ships electric loading and high voltage frequency converter produce, native system is furnished with multi-functional active filter, can guarantee electric power system no-harmonic wave pollution.
3, because boats and ships electricity consumption is based on inductive load, as water pump, hoisting equipment etc., therefore its power factor is lower, generally below 0.7.And the static reacance generator that this bank electric system is configured with no-power compensation function is (English: StaticVarGenerator, abbreviation: SVG), it can according to the power factor size of boats and ships electric loading, the capacity of configuration reactive power compensation, thus can guarantee that electric power system power factor peculiar to vessel reaches more than 0.85.
4, general intelligent electric meter and relaying protection can only be used in the electrical network of fixed frequency, as being used in intelligent electric meter and the relaying protection of 50HZ electrical network, can not be used in the electrical network of 60HZ.And frequency self-adaption intelligent electric meter and frequency self-adaption relaying protection that native system is connecting the configuration of boats and ships electric power system side all can be used in the electric power system of any frequency; namely the intelligent electric meter of native system and relaying protection frequency can self adaptations; they can carry out the self adaptation of algorithm according to the actual electricity consumption frequency measured, to guarantee the accuracy of metering and protection in electric power system at different frequencies.
The above; be only embodiment of the present utility model; but protection range of the present utility model is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; change can be expected easily or replace, all should be encompassed within protection range of the present utility model.Therefore, protection range of the present utility model should be as the criterion with the protection range of described claim.
Claims (9)
1. a shipping shore power system, is connected respectively with boats and ships and electrical network, it is characterized in that, comprising:
Distribution portion, is connected with described electrical network, for receiving line voltage from described electrical network, and carries out reactive power compensation and harmonic wave control to described electrical network; And
Power transformation portion, being connected with described distribution portion, for receiving described line voltage from described distribution portion, and transformation and/or frequency conversion being carried out to described line voltage, when described power transformation portion is connected with described boats and ships, the changing voltage after transformation and/or frequency conversion is supplied to described boats and ships by described power transformation portion.
2. shipping shore power system according to claim 1, is characterized in that, described distribution portion comprises power quality controlling device, and described power quality controlling device comprises:
Current Transmit, is connected with described electrical network, for gathering the electric current in described electrical network;
Computing module, is connected with described CT, and for receiving described electric current from described CT, and according to described electric current determination idle component information and harmonic component information, wherein, described harmonic component information is for determining amplitude and the direction of harmonic current in electrical network; And
Control module, be connected with described computing module, for receiving described idle component information and described harmonic component information from described computing module, and send power quality controlling signal, wherein, described power quality controlling signal comprises reactive power compensation drive singal and harmonic wave control drive singal.
3. shipping shore power system according to claim 2, is characterized in that, described power quality controlling device also comprises:
Reactive compensation module, is connected with described control module, for receiving described reactive power compensation drive singal from described control module, and produces reactive power compensation electric current according to described reactive power compensation drive singal; And
Active power filtering module, being connected with described control module, for receiving described harmonic wave control drive singal from described control module, and producing harmonic compensation current according to described harmonic wave control drive singal, wherein, described harmonic compensation current is contrary with the direction of described harmonic current and amplitude is equal.
4. shipping shore power system according to claim 3, is characterized in that, described power quality controlling device also comprises:
Reactive power compensation output interface, is connected respectively with described electrical network and described reactive compensation module, and described reactive compensation module exports described reactive power compensation electric current via described reactive power compensation output interface to described electrical network; And
Active power filtering output interface, is connected respectively with described electrical network and described active power filtering module, and described active power filtering module exports described harmonic compensation current via described active power filtering output interface to described electrical network.
5. shipping shore power system according to claim 2, is characterized in that, described power quality controlling device also comprises:
Power quality controlling Executive Module, be connected with described control module, for receiving described power quality controlling signal from described control module, and produce power quality controlling electric current according to described power quality controlling signal, wherein, described power quality controlling electric current is the electric current after reactive power compensation electric current and harmonic compensation current superpose, described reactive power compensation electric current is produced according to described reactive power compensation drive singal, described harmonic compensation current is produced according to described harmonic wave control drive singal, described harmonic compensation current is contrary with described harmonic current direction and amplitude is equal.
6. shipping shore power system according to claim 5, is characterized in that, described power quality controlling device also comprises:
Power quality controlling output interface, is connected respectively with described electrical network and described power quality controlling Executive Module, and described power quality controlling Executive Module exports described power quality controlling electric current via described power quality controlling output interface to described electrical network.
7. the shipping shore power system according to any one of claim 3 to 6, is characterized in that, described distribution portion is also for power distribution, and described distribution portion also comprises:
Distribution portion bus;
Electrical network incoming line cabinet, is connected respectively with described electrical network and described distribution portion bus, for receiving described line voltage from described electrical network, and described line voltage is supplied to described distribution portion bus;
Distribution portion PT cabinet, is connected with described distribution portion bus, for powering to measuring instrument and protective relaying device, to detect the operating voltage of described distribution portion circuit, power and electric energy;
Bank electricity outgoing line cabinet, is connected with described distribution portion bus, for described line voltage is supplied to described power transformation portion;
Distribution portion change cabinet used, is connected with described distribution portion bus, for providing the work electricity consumption in described distribution portion; And
SVG outgoing line cabinet, is connected with described power quality controlling device, for described line voltage is supplied to described power quality controlling device, and exports described reactive power compensation electric current and described harmonic compensation current to described electrical network.
8. shipping shore power system according to claim 7, is characterized in that, described power transformation portion comprises:
Variable-frequency variable-voltage device, is connected, for carrying out transformation and/or frequency conversion to described line voltage with described bank electricity outgoing line cabinet;
Isolating transformer, is connected with described variable-frequency variable-voltage device, for Isolation and the lightning protection of described power transformation portion circuit;
Power transformation portion bus;
Changing voltage incoming line cabinet, is connected respectively with described isolating transformer and power transformation portion bus, for receiving the changing voltage after described variable-frequency variable-voltage device transformation and/or frequency conversion, and described changing voltage is supplied to described power transformation portion bus;
Power transformation portion PT cabinet, is connected with described power transformation portion bus, for powering to measuring instrument and protective relaying device, to detect the operating voltage of described power transformation portion circuit, power and electric energy;
Power transformation portion change cabinet used, is connected with described power transformation portion bus, for providing the work electricity consumption in described power transformation portion; And
Boats and ships outgoing line cabinet, is connected with described power transformation portion bus, for described changing voltage is supplied to described boats and ships.
9. shipping shore power system according to claim 8, is characterized in that, described power transformation portion also comprises:
Frequency self-adaption intelligent electric meter, be connected between described power transformation portion bus and described changing voltage incoming line cabinet and between described power transformation portion bus and described boats and ships outgoing line cabinet, for carrying out frequency self-adaption, to ensure the accuracy measured at different frequencies according to the actual boats and ships electricity consumption frequency detected; And
Frequency self-adaption relay protector; be connected between described power transformation portion bus and described changing voltage incoming line cabinet and between described power transformation portion bus and described boats and ships outgoing line cabinet; for carrying out frequency self-adaption, to ensure the accuracy protected at different frequencies according to the actual boats and ships electricity consumption frequency detected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520962271.5U CN205123261U (en) | 2015-11-26 | 2015-11-26 | Boats and ships bank electric system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520962271.5U CN205123261U (en) | 2015-11-26 | 2015-11-26 | Boats and ships bank electric system |
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| Publication Number | Publication Date |
|---|---|
| CN205123261U true CN205123261U (en) | 2016-03-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520962271.5U Withdrawn - After Issue CN205123261U (en) | 2015-11-26 | 2015-11-26 | Boats and ships bank electric system |
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| Country | Link |
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| CN (1) | CN205123261U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105305449A (en) * | 2015-11-26 | 2016-02-03 | 上海华艾软件股份有限公司 | Ship shore power system |
-
2015
- 2015-11-26 CN CN201520962271.5U patent/CN205123261U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105305449A (en) * | 2015-11-26 | 2016-02-03 | 上海华艾软件股份有限公司 | Ship shore power system |
| CN105305449B (en) * | 2015-11-26 | 2018-01-09 | 上海艾临科智能科技有限公司 | Shipping shore power system |
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