CN203883473U - Double-frequency ship shore power device - Google Patents
Double-frequency ship shore power device Download PDFInfo
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- CN203883473U CN203883473U CN201420323468.XU CN201420323468U CN203883473U CN 203883473 U CN203883473 U CN 203883473U CN 201420323468 U CN201420323468 U CN 201420323468U CN 203883473 U CN203883473 U CN 203883473U
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- 230000005611 electricity Effects 0.000 claims description 12
- 238000004804 winding Methods 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 description 9
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 238000004891 communication Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
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- 239000003990 capacitor Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
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- 238000005265 energy consumption Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
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- 230000002159 abnormal effect Effects 0.000 description 1
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- 230000003321 amplification Effects 0.000 description 1
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- 238000007493 shaping process Methods 0.000 description 1
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- 238000013519 translation Methods 0.000 description 1
- 238000012384 transportation and delivery Methods 0.000 description 1
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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
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Abstract
The utility model discloses a double-frequency ship shore power device. The device comprises a phase-shifting transformer, a power frequency conversion unit, a filter unit, a frequency meter and an electric quantity metering device. The secondary side of the phase-shifting transformer is connected to the electric quantity metering device successively through the power frequency conversion unit, the filter unit and the frequency meter. The electric quantity metering device comprises a current transformer, a voltage transformer and a electric energy meter. The current transformer and the voltage transformer are connected to the electric energy meter. The double-frequency ship shore power device utilizes the frequency meter to automatically detect two different frequencies, 50Hz and 60Hz, is high incompatibility, utilizes a special voltage transformer and a special current transformer to collect related data, and then accurately determines 50Hz/60Hz electric amount.
Description
Technical field
The utility model relates to the ship shore electric technology in power technology field, particularly a kind of double frequency ship shore electric device.
Background technology
2011, Department of Transportation issues " " 12 " water transport energy-saving and emission-reduction totally advance embodiment ", overall goal is by 2015, water transport industry energy-saving and emission-reduction consciousness further strengthens, efficiency of energy utilization obviously improves, CO2 emission intensity obviously reduces, and management and running mechanism is basic to be set up, and Professional License, standard criterion system, technical support system and statistical monitoring checking system basically form; Water transport industry applied energy constitute is effectively improved, and ships that transport and harbour equipment maximization, specialization and modernization level significantly improve, and energy-conserving and emission-cutting technology obtains wide popularization and application; Water transport industry energy-saving and emission-reduction ability obviously strengthens, and completes " Highway and Waterway communications and transportation energy-saving and emission-reduction " 12 " planning " definite water transport target for energy-saving and emission-reduction comprehensively.
Its leading indicator is by 2015, compares with 2005, and harbour production unit throughput comprehensive energy consumption declines more than 8%; Ship in operation unit transport volume of the circular flow energy consumption declines more than 15%, and wherein ocean and inland navigation craft decline respectively more than 16% and 14%.Harbour production unit throughput CO2 emission declines more than 10%; The CO2 emission of ship in operation unit transport volume of the circular flow declines more than 16%, and wherein marine ship and inland navigation craft decline respectively more than 17% and 15%.
Because China's port and pier electric power system mains frequency is 50Hz, and lot of domestic and international large ship all adopts the boats and ships electrical equipment of 60Hz, if adopt land mains supply, the difference of harbour and ship power supply electricity system certainly will cause and have a strong impact on marine electric installation.Owing to can not directly using the alternating current of 50Hz, need frequency modulation for this reason, mains frequency is adjusted into 60hz, then to ship power supply.
To this, domestic many producers opposite bank electricity project technology is studied pilot, and has carried out the application of Patents, comprises 50Hz and the power supply of 60Hz double frequency, high-pressure frequency-conversion etc.But there is no ripe technical scheme for electric quantity metering and electricity charge calculating aspect, only have simple 50Hz metering and billing or 60Hz metering and billing, can not adapt to the domestic uncertainty to ship shore electric electricity charges policy, compatibility is not high.
Utility model content
The purpose of this utility model is open a kind of double frequency ship shore electric device, to overcome immature, the compatible low defect of traditional boats and ships bank electric installation electric quantity metering technology.
A kind of double frequency ship shore electric device that the utility model embodiment provides, comprising: phase shifting transformer, power converter unit, filter, frequency meter and electric quantity metering device; The secondary side of phase shifting transformer is connected with electric quantity metering device by power converter unit, filter, frequency meter successively; Electric quantity metering device comprises current transformer, voltage transformer and electric energy meter, and current transformer is connected with electric energy meter respectively with voltage transformer.
In technique scheme, electric quantity metering device at least comprises two groups of current transformers and voltage transformer.
In technique scheme, this double frequency ship shore electric device also comprises: input switch cabinet and output switch cabinet; The output of input switch cabinet is connected with the primary side of phase shifting transformer, and the input of output switch cabinet is connected with electric quantity metering device.
In technique scheme, this double frequency ship shore electric device also comprises supervising device; Supervising device is connected with output switch cabinet with input switch cabinet respectively.
In technique scheme, supervising device is connected with output switch cabinet with input switch cabinet respectively by RS485 interface.
In technique scheme, supervising device also comprises electricity tariff meter.
In technique scheme, power converter unit comprises rectifier and inverter; Inverter adopts independent current source.
In technique scheme, phase shifting transformer is many windings phase shifting transformer.
A kind of double frequency ship shore electric device that the utility model embodiment provides, modular self-adaptive different frequency, detects two kinds of different frequencies of frequency 50Hz/60Hz automatically by frequency meter, compatible high; Adopt dedicated potential transformer summation current transformer to carry out relevant parameter collection, and then accurately determine electric weight; Simultaneously can also carry out real-time charge calculation according to this electric weight and the charging way setting in advance, and all parts can carry out configuration, realize modularization.Can effectively reduce the harmonic pollution of High Voltage Transducer Upon Wirenet by phase shifting transformer, can not cause the humorous wave interference that exceedes national standard to electrical network, and realize step-down isolation; The low pressure uninterrupted power supply technology being independent of outside high pressure for the control power acquisition of inverter, has strengthened high pressure major loop and the controller optical-fibre communications of system, and antijamming capability is strong, safe and reliable.
Brief description of the drawings
Fig. 1 is the first structure chart of double frequency ship shore electric device in the utility model embodiment;
Fig. 2 is the circuit diagram of power converter unit in the utility model embodiment;
Fig. 3 is the structure chart of electric quantity metering device in the utility model embodiment;
Fig. 4 is the second structure chart of double frequency ship shore electric device in the utility model embodiment.
Embodiment
Below in conjunction with accompanying drawing, an embodiment of the present utility model is described in detail, but is to be understood that protection range of the present utility model is not subject to the restriction of embodiment.
A kind of double frequency ship shore electric device that the utility model embodiment provides, shown in Figure 1, comprising: phase shifting transformer 10, power converter unit 20, filter 30, frequency meter 40 and electric quantity metering device 50; The secondary side of phase shifting transformer 10 is connected with electric quantity metering device 50 by power converter unit 20, filter 30, frequency meter 40 successively.Wherein, this electric quantity metering device 50 comprises current transformer, voltage transformer and electric energy meter, and current transformer is connected with electric energy meter respectively with voltage transformer.In the utility model embodiment, phase shifting transformer 10, power converter unit 20 and filter 30 are combined into high voltage converter.
In the utility model embodiment, this phase shifting transformer 10 adopts many windings phase shifting transformer.The primary side of phase shifting transformer 10 directly accesses high-voltage fence, and secondary side has multiple three phase windings.Pass through phase shifting transformer, effectively harmonic carcellation (can be eliminated following harmonic wave 6n-1 time in theory, n is unit progression), input current waveform is approached sinusoidal wave, total harmonic distortion is lower than 3%, can not cause the humorous wave interference that exceedes national standard to electrical network, effectively reduce the harmonic pollution of High Voltage Transducer Upon Wirenet, and realize step-down isolation.
Power converter unit 20 comprises rectifier and inverter, and this inverter adopts independent current source.The circuit diagram of power converter unit 20 is specifically shown in Figure 2, power converter unit 20 by diode rectifier bridge, be connected in parallel on the large capacity storage capacitor C on DC bus, grading resistor R and the H bridge inverter being connected in parallel in these capacitor C forms, wherein, diode rectifier bridge is made up of rectifier diode T1-T6, H bridge inverter is made up of insulated gate bipolar transistor (Insulated Gate Bipolar Transistor, IGBT) Q1-Q4.Power converter unit 20 is for realizing frequency translation, and realizes the output of high pressure (such as 6.6KV) by the series connection of power converter unit 20; The low pressure uninterrupted power supply technology being independent of outside high pressure for the control power acquisition of inverter, has strengthened high pressure major loop and the controller optical-fibre communications of system, and antijamming capability is strong, safe and reliable.
Filter 30 can adopt active filter or passive filter or the two to be combined with, and the output of power converter unit is carried out to filtering processing, filters or suppress the harmonic wave of set point number.
Frequency meter 40 is a kind of electronic measuring instruments of specially measured signal frequency being measured, generally by time base (T) circuit, input circuit, counting display circuit and control circuit form.Its most basic operation principle is: in the time that the number of cycles of measured signal in special time period T is N, and the frequency f=N/T of measured signal.In a measuring period process, tested periodic signal through forming the burst pulse of specific period after amplification, shaping, derivation operation, is delivered to an input of main door in input circuit.The another one input of main door is that time-base circuit produces the gate pulse that circuit produces.During main door is opened in gate pulse, the burst pulse of specific period could be passed through main door, thereby entering counter counts, the display circuit of counter is used for showing the frequency values of measured signal, and internal control circuit has been used for switching between various measurement functions realize measure setup.
In the utility model embodiment, as above, electric quantity metering device 50 comprises current transformer, voltage transformer and electric energy meter, and current transformer is connected with electric energy meter respectively with voltage transformer, and frequency (50Hz or the 60Hz) self adaptation detecting according to frequency meter 40 is carried out electric quantity metering.Concrete, current transformer is converted to high-tension current the current input terminal of low-tension current access electric energy meter, voltage transformer is converted to high voltage the voltage input end of low-voltage access electric energy meter, and electric energy meter completes real-time Electro-metering work according to input voltage and electric current.Meanwhile, this electric quantity metering device also completes the function of delivery of electrical energy, the high tension voltage electric current of filter output is sent to the equipment of next stage.Preferably, this electric quantity metering device 50 at least comprises two groups of current transformers and voltage transformer, for under the sight of different frequency, switch current instrument transformer and voltage transformer group, and then difference measuring voltage and electric current, specifically shown in Figure 3, in Fig. 3 to exist two groups of current transformers and voltage transformer as example.
Preferably, shown in Figure 4, this double frequency ship shore electric device also comprises input switch cabinet 60 and output switch cabinet 70; The output of input switch cabinet 60 is connected with the primary side of phase shifting transformer 10, and the input of output switch cabinet 70 is connected with electric quantity metering device 50.Connect into and out of line mouth in standard cable, and locking after, switch in closed input switch cabinet 60, so detect key index (comprise overvoltage, under-voltage, overfrequency, under-frequency, phase shortage, anti-phase, power converter unit state, transformer state, ambient temperature etc.) errorless after, just can carry out the operation of closed output switch cabinet 70 interior switches according to external boats and ships instruction., have can not stop power supply (such as boats and ships exist patient's first aid situation, have boats and ships refrigerator etc.) time at boats and ships, now requirement can not have a power failure meanwhile, also needs ship shore electric device and marine generator to carry out manual/auto synchronizeing and net operation.
Preferably, this double frequency ship shore electric device also comprises supervising device 80; Supervising device 80 is connected with output switch cabinet 70 with input switch cabinet 60 respectively.Concrete, supervising device 80 is connected with output switch cabinet 70 with input switch cabinet 60 respectively by RS485 interface.This supervising device detects the state index of ship shore electric device inside by transducer, such as voltage, electric current, frequency etc., also comprise three imbalances, overcurrent, each critical component temperature and abnormal alarm detected.
Preferably, supervising device 80 also comprises electricity tariff meter, for double frequency ship shore electric electric supply installation carries out accurate measurement electric weight and can carry out various ways (time-of-use tariffs, step price, two electricity prices processed, contract electricity price, self-defined electricity price etc.) charging.Electricity tariff meter can adopt the existing equipment in market, also can utilize AT89C51 single-chip microcomputer to design billing function.The ship shore electric device that the utility model embodiment provides, realizes by electricity tariff meter and has the adaptive electric quantity metering function of modularization 50Hz/60Hz, can meet various ways charging.
A kind of double frequency ship shore electric device that the utility model embodiment provides, modular self-adaptive different frequency, detects two kinds of different frequencies of frequency 50Hz/60Hz automatically by frequency meter, compatible high; Adopt dedicated potential transformer summation current transformer to carry out relevant parameter collection, and then accurately determine electric weight; Simultaneously can also carry out real-time charge calculation according to this electric weight and the charging way setting in advance, and all parts can carry out configuration, realize modularization.Can effectively reduce the harmonic pollution of High Voltage Transducer Upon Wirenet by phase shifting transformer, can not cause the humorous wave interference that exceedes national standard to electrical network, and realize step-down isolation; The low pressure uninterrupted power supply technology being independent of outside high pressure for the control power acquisition of inverter, has strengthened high pressure major loop and the controller optical-fibre communications of system, and antijamming capability is strong, safe and reliable.
Disclosed is above only a specific embodiment of the present utility model, and still, the utility model is not limited thereto, and the changes that any person skilled in the art can think of all should fall into protection range of the present utility model.
Claims (8)
1. a double frequency ship shore electric device, is characterized in that, comprising: phase shifting transformer, power converter unit, filter, frequency meter and electric quantity metering device;
The secondary side of described phase shifting transformer is connected with described electric quantity metering device by described power converter unit, described filter, described frequency meter successively;
Described electric quantity metering device comprises current transformer, voltage transformer and electric energy meter, and described current transformer is connected with described electric energy meter respectively with described voltage transformer.
2. double frequency ship shore electric device according to claim 1, is characterized in that, described electric quantity metering device at least comprises two groups of current transformers and voltage transformer.
3. double frequency ship shore electric device according to claim 1, is characterized in that, also comprises: input switch cabinet and output switch cabinet;
The output of described input switch cabinet is connected with the primary side of described phase shifting transformer, and the input of described output switch cabinet is connected with described electric quantity metering device.
4. double frequency ship shore electric device according to claim 3, is characterized in that, also comprises supervising device;
Described supervising device is connected with described output switch cabinet with described input switch cabinet respectively.
5. double frequency ship shore electric device according to claim 4, is characterized in that, described supervising device is connected with described output switch cabinet with described input switch cabinet respectively by RS485 interface.
6. double frequency ship shore electric device according to claim 4, is characterized in that, described supervising device also comprises electricity tariff meter.
7. according to the arbitrary described double frequency ship shore electric device of claim 1-6, it is characterized in that, described power converter unit comprises rectifier and inverter;
Described inverter adopts independent current source.
8. according to the arbitrary described double frequency ship shore electric device of claim 1-6, it is characterized in that, phase shifting transformer is many windings phase shifting transformer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420323468.XU CN203883473U (en) | 2014-06-17 | 2014-06-17 | Double-frequency ship shore power device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420323468.XU CN203883473U (en) | 2014-06-17 | 2014-06-17 | Double-frequency ship shore power device |
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| Publication Number | Publication Date |
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| CN203883473U true CN203883473U (en) | 2014-10-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420323468.XU Expired - Lifetime CN203883473U (en) | 2014-06-17 | 2014-06-17 | Double-frequency ship shore power device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105046826A (en) * | 2015-08-27 | 2015-11-11 | 广州航海学院 | Charging device based on ship shore power connection |
| CN106411145A (en) * | 2016-12-14 | 2017-02-15 | 国网江苏省电力公司经济技术研究院 | Inversion unit of shore power system and inversion system thereof |
| TWI671971B (en) * | 2017-09-11 | 2019-09-11 | 台達電子工業股份有限公司 | Integrated power supply system |
-
2014
- 2014-06-17 CN CN201420323468.XU patent/CN203883473U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105046826A (en) * | 2015-08-27 | 2015-11-11 | 广州航海学院 | Charging device based on ship shore power connection |
| CN106411145A (en) * | 2016-12-14 | 2017-02-15 | 国网江苏省电力公司经济技术研究院 | Inversion unit of shore power system and inversion system thereof |
| TWI671971B (en) * | 2017-09-11 | 2019-09-11 | 台達電子工業股份有限公司 | Integrated power supply system |
| US11056906B2 (en) | 2017-09-11 | 2021-07-06 | Delta Electronics, Inc. | Integrated power supply system |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| C56 | Change in the name or address of the patentee | ||
| CB03 | Change of inventor or designer information |
Inventor after: Zhang Li Inventor after: Liu Qiang Inventor after: Wang Jixing Inventor after: Gao Ge Inventor after: Li Zhiqiang Inventor after: Zhang Zhao Inventor after: Ji Xueqing Inventor after: Zhang Haibo Inventor after: Li Xiaoguang Inventor before: Zhang Li Inventor before: Wang Jixing Inventor before: Gao Ge Inventor before: Li Zhiqiang Inventor before: Zhang Zhao |
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| COR | Change of bibliographic data | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Patentee after: State Grid Corporation of China Patentee after: BEIJING SMARTCHIP MICROELECTRONICS TECHNOLOGY Co.,Ltd. Address before: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Patentee before: State Grid Corporation of China Patentee before: BEIJING NARI SMARTCHIP MICROELECTRONICS Co.,Ltd. |
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| TR01 | Transfer of patent right |
Effective date of registration: 20170105 Address after: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Patentee after: State Grid Corporation of China Patentee after: BEIJING SMARTCHIP MICROELECTRONICS TECHNOLOGY Co.,Ltd. Patentee after: STATE GRID ZHEJIANG ELECTRIC POWER Co. Address before: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Patentee before: State Grid Corporation of China Patentee before: BEIJING SMARTCHIP MICROELECTRONICS TECHNOLOGY Co.,Ltd. |