CN105826948B - Electrical Propulsion Ship ac power supply system - Google Patents
Electrical Propulsion Ship ac power supply system Download PDFInfo
- Publication number
- CN105826948B CN105826948B CN201610329055.6A CN201610329055A CN105826948B CN 105826948 B CN105826948 B CN 105826948B CN 201610329055 A CN201610329055 A CN 201610329055A CN 105826948 B CN105826948 B CN 105826948B
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- Prior art keywords
- diesel
- daily
- power
- load
- ship
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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
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/381—Dispersed generators
-
- 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
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/46—Controlling of the sharing of output between the generators, converters, or transformers
- H02J3/48—Controlling the sharing of the in-phase component
-
- 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
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/46—Controlling of the sharing of output between the generators, converters, or transformers
- H02J3/50—Controlling the sharing of the out-of-phase component
Abstract
The present invention relates to a kind of Electrical Propulsion Ship ac power supply system, by diesel generating set, panel, propulsion system and daily transformer composition, diesel generating set includes several main diesel generating sets and 1 auxiliary diesel generating set, panel is divided into region by busbar number, regional is connected by bus connection switch, bus connection switch is in closure state during normal operation, diesel generating set output is connected on each busbar, panel configures power management system, propulsion system is by the frequency converter with reactive power compensation function, three-phase AC asynchronous motor and propeller are sequentially connected composition, daily transformer is the daily load power supply in addition to propulsion system on ship, diesel generating set provides the active power load of propulsion system and daily load, frequency converter provides the reactive power load of daily load.Effectively solves the problems, such as to distribute when providing reactive power by generator it is uneven, and the problem of the active power fed back consumes when propulsion system is slowed down.
Description
Technical field
The present invention relates to a kind of Ship Electrical Power System, more particularly to a kind of Electrical Propulsion Ship ac power supply system.
Background technology
It is real with extensive application of the electric propulsion system on working ship, scientific investigation ship, ocean platform and hybrid power ship
The characteristics of fully demonstrating the flexible excellent control performance of Electrical Propulsion Ship, low noise, Arrangement of Engine-room and good economy performance is trampled, but
Be there is also some told as follows need improve the problem of.
The problem of needing to consider control harmonic wave due to Electrical Propulsion Ship, the side of multiphase diode rectification is mainly used at present
The frequency converter of formula provides energy for propulsion system, but this scheme has to corresponding phase-shifting transformer, than if any two masters
Propeller means that the phase-shifting transformer of more two respective volumes, adds the demand to cabin space.In addition, Ship Propeling
Device will produce feedback power when slowing down, and the frequency converter of diode rectification form needs brake chopper and braking resistor to consume
This electric energy.
In addition, in the case of marine propuision system is idle, often load is smaller, and general shipowner can consider to use one
Capacity less auxiliary generator group matches this capacity.Therefore Large Copacity diesel generating set and low capacity diesel-driven generator be present
Group situation in parallel, higher requirement is proposed to active and idle equilibrium.CCS specification is directed to the above situation, at it
Pointed out in specification, in the case of the diesel-driven generator sets in parallel operation of different capacity, the active power that each unit is undertaken is born with total
± the 15% of the power power that maximum unit is should be less than by the difference of unit quota pro rate value is carried, reactive power then mutually should be ±
10%.If active and idle equilibrium assignment can be solved the problems, such as, the reliability service of separate unit diesel generating set is not only can ensure that,
And the stability of whole electric propulsion system can be increased.
The content of the invention
A kind of the problem of existing the present invention be directed to marine propuision system power supply, it is proposed that Electrical Propulsion Ship Alternating Current Power Supply
System, phase-shifting transformer can be saved to save cabin space, can effectively solve asking for the active and idle equilibrium assignment of system
Feedback energy when topic, ship slow down can be utilized effectively.
The technical scheme is that：A kind of Electrical Propulsion Ship ac power supply system, by diesel generating set, distribution
Plate, propulsion system and daily transformer composition, diesel generating set include several main diesel generating sets and 1 auxiliary diesel generation
Unit, panel are divided into region by busbar number, and regional is connected by bus connection switch, and bus connection switch is in and closed during normal operation
Conjunction state, diesel generating set output are connected on each busbar, and panel configuration power management system, propulsion system is by with nothing
Frequency converter, three-phase AC asynchronous motor and the propeller of reactive power compensator function are sequentially connected composition, and daily transformer is ship
On daily load power supply in addition to propulsion system, the active power that diesel generating set provides propulsion system and daily load bears
Lotus, the frequency converter in propulsion system provide the reactive power load of daily load.
The panel power management system distribution power is total in diesel-driven generator needed for net by calculating a certain moment
Electric current is with netting the ratio of all specified total currents of diesel-driven generator, then multiplying the ratio and the rated current of every generator
Current value of the product as distribution needed for this generator, the current value and the electric current of this diesel-driven generator at that time of required distribution enter
Row compares, and the speed of diesel engine is adjusted according to fiducial value power management system output signal, is sent out with this to reach each diesel oil of regulation
The balance of active power between group of motors.
The daily transformer is at least two, and every daily one frequency converter of matched transformer, every frequency converter is by one
Controlled rectifier and an inverter composition, controlled rectifier have the work(of DC bus-bar voltage control and Reactive Power Control
Can, the voltage and current of the corresponding daily transformer front end of frequency converter detection input, determine to carry by the phase difference of voltage and current
For the size of daily reactive load power, and it is idle needed for the reactive power exported by PID regulation frequency converters and daily load
The balance of power.
The diesel generating set configures automatic voltage adjusting means, is accordingly encouraged according to hair diesel oil motor output current selection
Magnetoelectricity stream automatically adjusts diesel generating set, exports burning voltage.
The ship be in slow down when, propeller rotating speed be higher than three-phase AC asynchronous motor synchronous field rotating speed, three
Cross streams asynchronous motor is in generating state, and electric energy will pass through inversion module feedback to daily load.
The beneficial effects of the present invention are：Electrical Propulsion Ship ac power supply system of the present invention, can without phase-shifting transformer
Effectively to save cabin space, the feedback energy that can be slowed down with feedback ship, can the balanced active and distribution of reactive power, letter
The function of automatic pressure regulating device and power management system in the system is changed.
Brief description of the drawings
Fig. 1 is Electrical Propulsion Ship ac power supply system figure of the present invention；
Fig. 2 is the Reactive Power Control structure chart of controlled rectifier of the present invention；
Fig. 3 is that Electrical Propulsion Ship of the present invention is berthed operating mode ac power supply system figure；
Fig. 4 is Energy Feedback System figure when Electrical Propulsion Ship of the present invention is slowed down；
Fig. 5 is that generator adjusts performance diagram under resistive load.
Embodiment
Electrical Propulsion Ship ac power supply system figure as shown in Figure 1, the electric power system by diesel generating set, panel,
Propulsion system and daily transformer composition.Wherein diesel generating set includes the main diesel generating sets of 3 1800kW and 1
The auxiliary diesel generating sets of 1000kW, diesel generating set configuration automatic voltage adjusting means, generator voltage automatically adjust device root
Corresponding exciting current is selected to carry out the stable 690V voltages of automatic regulator generator output according to output generator current.Panel subregion
Domain is left busbar and right busbar region, and two main diesel generating set outputs connect a busbar, 1 main diesel generating set and 1
The output of platform auxiliary diesel generating set connects another busbar, and left and right region is connected by bus connection switch, during normal operation at bus connection switch
In closure state, each busbar matches somebody with somebody a panel, panel configuration power management system.Propulsion system is by with reactive power
The AFE of compensation function（Active Front End）Frequency converter, 1850kW three-phase AC asynchronous motors and propeller composition.2 800kW days
It is the daily load power supply on ship in addition to promoting with transformer.2 800kW days with transformer be on ship it is daily negative in addition to promoting
Lotus is powered.Diesel generating set provides the active power load of propulsion system and daily load, and the reactive power of daily load is born
Lotus is by AFE（Active Front End）Frequency converter provides.
The specific implementation of reactive power equilibrium assignment：Two AFE in the system（Active Front End）Frequency converter, every frequency converter
It is made up of a controlled rectifier and an inverter, controlled rectifier has DC bus-bar voltage control and Reactive Power Control
Function, the Reactive Power Control structure chart of controlled rectifier as shown in Figure 2.Two AFE（Active Front End）Frequency converter detection is defeated
Enter to the voltage and current of two daily transformer front ends, determine to need to provide daily load by the phase difference of voltage and current
The size of reactive power, and two AFE are adjusted by PID（Active Front End）The reactive power of frequency converter output and daily load institute
Need the balance of reactive power.During normal/cruise, two AFE（Active Front End）Frequency converter by optical-fibre communications reactive power data,
As two frequency converters without distribution of work error within 5% if without adjustment, such as exceed this error, then to reactive power output it is few
Frequency converter one additional compensation adjusts distribution of work error within 5%.If ship is in berthed shown in Fig. 3 situation or one
AFE（Active Front End）Frequency converter is in failure situation, then an AFE（Active Front End）Frequency converter individually provides nothing to daily load
Work(power.
Here embodiment is the main diesel generating sets of 3 1800kW and the auxiliary diesel generating sets of 1 1000kW, 2
Platform 800kW days, other electric power systems can carry out main diesel generating set and daily according to power reguirements with transformer as an example
Selected, active power and the reactive power reference embodiment of transformer number of units.
The specific implementation of energy feedback when ship slows down：For the system when ship is in and slowed down, propeller rotating speed is higher than three
The synchronous field rotating speed of cross streams asynchronous motor, three-phase AC asynchronous motor are in generating state, and electric energy will pass through AFE
（Active Front End）Inversion module feedback to dc bus, DC bus-bar voltage is lifted.Foregoing AFE（Active Front End）Become
The controlled rectifier of frequency device has DC bus-bar voltage control function, when DC bus-bar voltage overrate, as shown in Figure 4
Controlled rectifier feedback energy is controlled to daily load.Foregoing AFE（Active Front End）Frequency converter is by controlling deceleration curve control
Maximum feedback capacity processed is 200kW.
The specific implementation of active power equilibrium assignment：The system is due to using AFE（Active Front End）Frequency converter is daily negative
Lotus provides reactive power, therefore diesel generating set only needs to provide active power to system.The cable of generator to panel is cut
Area is only needed to select by active power, and the electric current of the breaker of generator can also be reduced accordingly.Due to generator without
Reactive power need to be provided to system, generator is under resistive load operating mode and run, the automatic electric for regulator generator voltage
Adjusting means is pressed, generator adjustment performance diagram, searches encouraging under corresponding dynamo current under the resistive load according to Fig. 5
Magnetoelectricity stream, above-mentioned exciting current is inputted to generator by excitation module, generator maintains 690V voltage constants.On panel
Power management system monitors the electric current of each generator breaker, if 4 generators, in net, power management system, which measures, to be needed
Want instantaneous total current value=4000A of 4 machines, specified total current=5355A of 4 machines, the 1# rated currents of generator=1505A, 1#
Generator share current=（The instantaneous total current value of 4 machines）* (the 1# rated currents of generator)/(the specified total current of 4 machines)=
4000*1505/5355=1124A, 2# generator share current=3# generators share current=1124A, auxiliary generator share current
=628A.If now 1# generators transient current is less than 1124A, power management system sends 1# diesel engines increase rotating speed
Order, reaches 1124A to adjust 1# generator transient currents.If now 1# generators transient current is more than 1124A, power
Management system sends the order that 1# diesel engines reduce rotating speed, reaches 1124A to adjust 1# generator transient currents.Other diesel engines
Also speed governing is according to said method carried out.The method of the share current can be with active balanced point of each diesel generating set of efficient balance
Match somebody with somebody.
Claims (5)
1. a kind of Electrical Propulsion Ship ac power supply system, it is characterised in that by diesel generating set, panel, propulsion system
Formed with daily transformer, diesel generating set includes several main diesel-driven generators and 1 auxiliary diesel-driven generator, panel are divided into
Left busbar and right busbar region, regional are connected by bus connection switch, and bus connection switch is in closure state, diesel oil during normal operation
Generating set output is connected on panel busbar, and panel configuration power management system, propulsion system with reactive power by mending
The frequency converter, three-phase AC asynchronous motor and propeller for repaying function are sequentially connected composition, and daily transformer is except propulsion on ship
Daily load power supply outside system, diesel generating set provide the active power load of propulsion system and daily load, promote system
Frequency converter in system provides the reactive power load of daily load.
2. Electrical Propulsion Ship ac power supply system according to claim 1, it is characterised in that the panel power management
System distribution power is by calculating a certain moment in diesel-driven generator total current needed for net with netting all diesel-driven generator volumes
Determine the ratio of total current, a certain moment refers to total active power load of a certain moment in diesel-driven generator total current needed for net
Electric current, then using the product of the ratio and the rated current of every diesel-driven generator as the electricity distributed needed for this diesel-driven generator
Flow valuve, the current value and the electric current of this diesel-driven generator at that time of required distribution are compared, according to fiducial value power management system
The speed of output signal of uniting regulation diesel-driven generator, the balance of active power between each diesel-driven generator is adjusted to reach with this.
3. Electrical Propulsion Ship ac power supply system according to claim 1, it is characterised in that the daily transformer is at least
For two, every daily transformer matches the frequency converter in a propulsion system, every frequency converter by a controlled rectifier and
One inverter composition, controlled rectifier have the function of DC bus-bar voltage control and Reactive Power Control, frequency converter detection
The voltage and current of corresponding daily transformer front end input, determines to provide daily reactive load by the phase difference of voltage and current
The size of power, and the balance of reactive power needed for the reactive power exported by PID regulation frequency converters and daily load.
4. Electrical Propulsion Ship ac power supply system according to claim 1, it is characterised in that the diesel-driven generator is matched somebody with somebody
Automatic voltage adjusting means is put, selects corresponding exciting current to automatically adjust diesel generation according to diesel-driven generator output current
Machine, export burning voltage.
5. according to Electrical Propulsion Ship ac power supply system described in Claims 1-4 any one, it is characterised in that the ship
When oceangoing ship is in deceleration, propeller rotating speed is higher than the synchronous field rotating speed of three-phase AC asynchronous motor, phase asynchronous electronic
Machine is in generating state, and electric energy will pass through the inverter fed in propulsion system frequency converter to daily load.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610329055.6A CN105826948B (en) | 2016-05-17 | 2016-05-17 | Electrical Propulsion Ship ac power supply system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610329055.6A CN105826948B (en) | 2016-05-17 | 2016-05-17 | Electrical Propulsion Ship ac power supply system |
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| Publication Number | Publication Date |
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| CN105826948A CN105826948A (en) | 2016-08-03 |
| CN105826948B true CN105826948B (en) | 2018-03-06 |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107416164A (en) * | 2017-03-23 | 2017-12-01 | 山西汾西重工有限责任公司 | Ship direct current networking electric propulsion system based on synchronous motor diesel generating set |
| CN106965916A (en) * | 2017-03-23 | 2017-07-21 | 山西汾西重工有限责任公司 | Ship direct current networking electric propulsion system based on magneto |
| CN106979069A (en) * | 2017-03-23 | 2017-07-25 | 山西汾西重工有限责任公司 | A kind of diesel generating set and its startup method based on direct current networking peculiar to vessel |
| CN108134442A (en) * | 2018-02-11 | 2018-06-08 | 江苏奥畋工程科技有限公司 | Ship hybrid propulsion system based on Active Front End converter technique |
| CN109088395B (en) * | 2018-09-10 | 2020-02-07 | 中国船舶重工集团公司第七0四研究所 | Generator protection device based on closed-loop ship power system |
| CN112644675A (en) * | 2021-01-03 | 2021-04-13 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） | Alternating-current networking electric propulsion system for ship |
| CN113595464B (en) * | 2021-07-20 | 2023-12-19 | 中车大连电力牵引研发中心有限公司 | Control equipment and control method for transmission system of internal combustion electric transmission tractor |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102570506A (en) * | 2012-02-10 | 2012-07-11 | 株洲变流技术国家工程研究中心有限公司 | Controlling method of energy feedback type diesel engine testing device |
| CN103003145A (en) * | 2010-06-08 | 2013-03-27 | 通用电气能源电力转化技术有限公司 | Power Distribution Systems |
| CN204415699U (en) * | 2014-12-10 | 2015-06-24 | 重庆长航东风船舶工业公司 | Marine propuision system and using electricity system |
| CN205753444U (en) * | 2016-05-17 | 2016-11-30 | 中国船舶重工集团公司第七0四研究所 | Electrical Propulsion Ship ac power supply system |
-
2016
- 2016-05-17 CN CN201610329055.6A patent/CN105826948B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103003145A (en) * | 2010-06-08 | 2013-03-27 | 通用电气能源电力转化技术有限公司 | Power Distribution Systems |
| CN102570506A (en) * | 2012-02-10 | 2012-07-11 | 株洲变流技术国家工程研究中心有限公司 | Controlling method of energy feedback type diesel engine testing device |
| CN204415699U (en) * | 2014-12-10 | 2015-06-24 | 重庆长航东风船舶工业公司 | Marine propuision system and using electricity system |
| CN205753444U (en) * | 2016-05-17 | 2016-11-30 | 中国船舶重工集团公司第七0四研究所 | Electrical Propulsion Ship ac power supply system |
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Effective date of registration: 20190812 Address after: 200031 Xuhui District, Hengshan Road, No. 10, Co-patentee after: SHANGHAI CSIC SHIP PROPULSION EQUIPMENT CO., LTD. Patentee after: China Shipbuilding Industry Corp seventh 0 four Institute Address before: 200031 Xuhui District, Hengshan Road, No. 10, Patentee before: China Shipbuilding Industry Corp seventh 0 four Institute |