CN105633957A - Ship shore-based variable frequency power supply system - Google Patents

Ship shore-based variable frequency power supply system Download PDF

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Publication number
CN105633957A
CN105633957A CN201610094211.5A CN201610094211A CN105633957A CN 105633957 A CN105633957 A CN 105633957A CN 201610094211 A CN201610094211 A CN 201610094211A CN 105633957 A CN105633957 A CN 105633957A
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CN
China
Prior art keywords
power supply
subsystem
bank
grid
output
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CN201610094211.5A
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Chinese (zh)
Inventor
赵凤俭
石山
刘树
刘志超
王皆庆
袁占辉
张研
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Beijing Sifang Automation Co Ltd
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Beijing Sifang Automation Co Ltd
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Priority to CN201610094211.5A priority Critical patent/CN105633957A/en
Publication of CN105633957A publication Critical patent/CN105633957A/en
Pending legal-status Critical Current

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Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00Circuit arrangements for ac mains or ac distribution networks
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/0006Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network for single frequency AC networks
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00Circuit arrangements for ac mains or ac distribution networks
    • H02J3/38Arrangements for parallely feeding a single network by two or more generators, converters or transformers
    • H02J3/40Synchronising a generator for connection to a network or to another generator
    • H02J3/42Synchronising a generator for connection to a network or to another generator with automatic parallel connection when synchronisation is achieved
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00Circuit arrangements for ac mains or ac distribution networks
    • H02J3/38Arrangements for parallely feeding a single network by two or more generators, converters or transformers
    • H02J3/388Islanding, i.e. disconnection of local power supply from the network

Abstract

The invention relates to a ship shore-based variable frequency power supply system. The system comprises a main monitoring system, a shore-based power supply sub-system, a junction box sub-system, a cable winding cylinder sub-system and a ship power supply sub-system, wherein independent communication channels are arranged between the main monitoring system and the shore-based power supply sub-system and between the main monitoring system and the junction box sub-system, the cable winding cylinder sub-system and the ship power supply sub-system are connected with the main monitoring system, a main monitoring system controller coordinatively controls each sub-system, and the functions of operation mode switching, output power baking switching, grid-connected mode switching, load transferring, protection, metering, human-machine interaction and the like are achieved. By the shore-based variable frequency power supply system, different power baking outputs can be achieved, a shore-based power supply loop is configured for a plurality of berths, a path of high-voltage three-phase sine-wave power supply output can be provided, multiple paths of low-voltage three-phase sine-wave power supply outputs also can be provided, and the size of each path of output power can be flexibly configured.

Description

A kind of boats and ships bank base conversion power supply system
Technical field
The invention belongs to boats and ships shore-based power supply field, particularly relate to a kind of boats and ships bank base conversion power supply system.
Background technology
Boats and ships are during harbour is stopped, and on ship, equipment component can not be shut down, it is necessary to provide continual supply of electric power for this equipment component. Supply of electric power now relies primarily on the diesel-driven generator that boats and ships carry, and the emission after fuel oil combustion becomes the key factor affecting harbour air quality, and diesel-driven generator runs and also harbour defined sound pollution simultaneously. Reducing the pollutant emission during boats and ships reach port, energy-saving and emission-reduction and improvement of environment for harbour are significant. Adopting bank reference power supply is reach port ship power supply, period of pulling in shore stop boats and ships and carry the operation of diesel-driven generator, can effectively realize energy-saving and emission-reduction and the improvement of environment target at harbour.
At present, boats and ships shore-based power supply system mainly have high pressure go on board and low pressure go on board two kinds; Relatively big for big-and-middle-sized boats and ships load, adopt high pressure to go on board, corresponding power supply electricity is made as 6.6KV/60Hz and 6KV/50H; And less for spitkit load, adopt low pressure to go on board, corresponding power supply electricity is made as 440V/60Hz and 380KV/50Hz.
Numerous berth that varies in size often it is provided with at same harbour, and each berth power demands differing. In spot ship shore-based power supply technology and scheme, the shore-based power supply mode of all employings " point-to-point " that high pressure is gone on board and low pressure is gone on board, for each berth, a set of frequency-converting power supply is set, and the output voltage grade of variable-frequency power sources and heap(ed) capacity are fixed configurations, with high costs, utilization rate of equipment and installations is relatively low; Therefore, improve shore-based power supply utilization rate of equipment and installations and there is realistic meaning.
Summary of the invention
For overcoming the deficiency in prior art and scheme, the present invention proposes a kind of boats and ships bank base conversion power supply system, can being actually needed according to harbour, for the shore-based power supply power supply that different berth allocation problems are suitable, improve the utilization rate of shore-based power supply equipment.
The specific implementation of the present invention is as follows:
A kind of boats and ships bank base conversion power supply system, this system is made up of monitoring and controlling system, bank reference power supply subsystem, power-on box subsystem, cable drum subsystem, ship power supply subsystem, it is characterised in that:
Bank reference power supply subsystem, power-on box subsystem, cable drum subsystem, ship power supply subsystem electrical primary part be sequentially connected with, the power supply of described bank reference power supply subsystem inputs quoted from harbour Central Substations power supply, bank reference power supply subsystem is according to boats and ships electricity requirement in berth, produce multiple different electricity system output, for multiple berth allocation problem shore-based power supply loops;
Described power-on box subsystem includes the multichannel high pressure from the extraction of bank reference power supply subsystem difference electricity outfan and/or low pressure power-on box;
Described cable drum subsystem includes many group high pressure and/or low-voltage cable reel, described ship power supply subsystem is that the boats and ships high pressure in each berth and/or low-voltage distribution system, described high pressure and/or low-voltage cable reel are separately positioned between described multichannel high pressure and/or low pressure power-on box and each boats and ships high pressure and/or low-voltage distribution system;
Monitoring and controlling system and bank reference power supply subsystem, power-on box subsystem are provided with independent communication passage between each junction box, harbour Central Substations; Cable drum subsystem, ship power supply subsystem are provided with each independent communication bus and are connected with monitoring and controlling system; Monitoring and controlling system controller obtains the trip information of each subsystem, and assigns control command to each subsystem, coordinates to control each subsystem, it is achieved output electrical system switching, grid-connect mode switching, load transfer, protection, function of measuring.
The present invention still further comprises following preferred version:
Monitoring and controlling system, each subsystem are equipped with independent control.
It is provided with independent communication passage between each junction box and the corresponding cable drum in cable drum subsystem in power-on box subsystem, cable drum subsystem is provided with independent communication passage between each cable drum ship power distribution system corresponding to ship power supply subsystem.
Described monitoring and controlling system is provided with monitoring and controlling system controller, data switching exchane; The independent communication passage that monitoring and controlling system controller is between bank reference power supply subsystem and power-on box subsystem is provided with stand-alone interface; Data switching exchane connects monitoring and controlling system controller, cable drum subsystem controller, ship power supply subsystem controller, charging work station, security protection work station, video monitoring work station, data server.
The grid-connect mode that pulls in shore of ship power supply subsystem includes the operation of bank side and pulls in shore grid-connect mode and shipboard operation is pulled in shore grid-connect mode;
The operation of bank side is pulled in shore under grid-connect mode, and grid-connected, load transfer operation is dominated by bank reference power supply subsystem, other Subsystem complete; Shipboard operation is pulled in shore under grid-connect mode, and grid-connected, load transfer operation is dominated by ship power supply subsystem, other Subsystem complete.
In bank side, operation is pulled in shore under grid-connect mode, and site is bank reference power supply subsystem output switch; Before grid-connected, by ship power supply subsystem access switch, between ship power supply subsystem and bank reference power supply subsystem electrical primary switch Guan Bi, after bank reference power supply subsystem detects ship power supply parameter, the output parameter of adjustment variable-frequency power sources subsystem is consistent with ship power supply, realize the grid-connected same period at also two ends, site, Guan Bi bank reference power supply subsystem output switch, completes grid-connected; After grid-connected, bank reference power supply subsystem and ship power supply subsystem cooperate, and complete load transfer operation, then disconnect ship power supply subsystem output switch, excise ship power supply.
Pull in shore under grid-connect mode in shipboard operation, and site is that ship power supply subsystem accesses switch; Before grid-connected, by bank reference power supply subsystem output switch, between bank reference power supply subsystem and ship power supply subsystem electrical primary switch Guan Bi, after ship power supply subsystem detects bank reference power supply parameter, adjust through communication channel that the output parameter of bank reference power supply subsystem is consistent with ship power supply, the grid-connected same period at realization also two ends, site, Guan Bi ship power supply subsystem accesses switch, completes grid-connected; After grid-connected, bank reference power supply subsystem and ship power supply subsystem cooperate, and complete load transfer operation, then disconnect ship power supply subsystem output switch, excise ship power supply.
Under the offshore grid-connect mode of ship power supply subsystem, grid-connected, load transfer operation is dominated by ship power supply subsystem, other Subsystem complete.
At offshore grid-connect mode, and the output switch that site is ship power supply subsystem; After ship power supply subsystem detects bank reference power supply parameter, the output parameter of adjustment ship power supply is consistent with bank reference power supply, realize the grid-connected same period at also two ends, site, and the output switch of Guan Bi ship power supply subsystem completes grid-connected; After grid-connected, bank reference power supply subsystem and ship power supply subsystem cooperate, and complete load transfer operation, then disconnect bank reference power supply subsystem output switch and ship power supply subsystem access switch, excise bank reference power supply.
Bank reference power supply subsystem is made up of variable frequency power controller and variable-frequency power sources main circuit; Variable frequency power controller adopts hierarchical logic framework, is divided into three layers, respectively main control unit layer, function control unit layer and basic control unit layer; Main control unit layer and monitoring and controlling system communication, it is achieved being uniformly controlled variable-frequency power sources; Function control unit layer realizes deciliter logical process of variable-frequency power sources major loop breaker in middle device, it is achieved in variable-frequency power sources major loop, regular default, the driving of the control of power model and relay protective scheme differentiate, collect and process the data of sampling channel; Described basic control unit layer realizes driving the motor-operating mechanism of variable-frequency power sources main circuit breaker in middle device, control signal after decomposing is distributed in variable-frequency power sources major loop each power model successively, realizing the coordination between power model to control, the data that each sampling unit is uploaded carry out number system transition and process.
Every when described variable-frequency power sources main circuit is High voltage output arranges a power model group mutually, each power model group contains some power models, each power model obtains input from corresponding transformer secondary winding of shifting to respectively, the output of each power model connects with a switch in corresponding high-low pressure switching switches set respectively, switch is provided with normally opened and normally closed interlocking contact, a road High voltage output or the output of multichannel low pressure is realized by controlling switch normally-open normally-close switching, it is that the power model in each power model group is sequentially connected in series the phase exported in three-phase during High voltage output, it is the output of each power model independence three-phase during low pressure output, during the output of multichannel low pressure, by controlling the switch in low pressure output switching switches set, it is achieved multichannel power model output output-parallel, watt level can flexible configuration.
Electrical primary line reactance preset in the control strategy of bank reference power supply subsystem and impedance voltage drop model; According to exporting the voltage and current detected in real time in variable-frequency power sources, calculate electrical primary line drop, adjust output in real time and carry out voltage-drop compensation, it is ensured that the output voltage of cable drum subsystem and ship power supply subsystem junction meets burden requirement.
Each high pressure or low pressure power-on box subsystem are provided with power-on box controller, instrument, chopper, phase sequence switching device, data acquisition device, charge accounting unit, realize instruction on the spot and the handoff functionality of under-voltage protection, overload protection, short-circuit protection, charge accounting and phase sequence on the spot.
Described cable drum subsystem realizes the tension force to cable, output length, speed and motor and runs and carry out closed loop control.
The present invention has following useful technique effect: the present invention proposes a kind of boats and ships bank base conversion power supply system, and the shore-based power supply loop in multiple berth is made, configured to exportable different electricity; This system can provide a road high pressure three-phase sine-wave power supply output, it is possible to provides the output of multichannel low voltage three-phase sine-wave power, and during multiple-channel output pattern, each road output size flexibly configurable, and realize following function:
(1) perfect function. Monitoring and controlling system can realize the functions such as operator scheme switching, output electrical system switching, grid-connect mode switching, load transfer, defencive function, function of measuring, man-machine interaction. Monitoring and controlling system controller is obtained the trip information of each subsystem and equipment by each subsystem and device controller, is assigned control command, coordinates to control each subsystem.
(2) system is easy and simple to handle, and each subsystem and equipment are respectively provided with manually and automatically mode of operation. The managing intelligent information of this system can be realized by the human-computer interaction interface of monitoring and controlling system and information shows.
(3) grid-connect mode is flexibly, reliably. System may be configured as pull in shore grid-connect mode, shipboard operation of bank side operation and pulls in shore grid-connect mode, offshore grid-connect mode, and bank reference power supply grid-connected same period self-powered with boats and ships, load transfer process can be automatically performed according to the configuration of prior control strategy.
(4) high quality of power supply output. Each branch road of variable-frequency power sources output is equipped with special filtering link, it is ensured that the quality of power supply of output electric energy; Simultaneity factor is provided with mean for electric line end and compensates function, it is ensured that the output voltage deviation of line end of system electrical.
(5) each berth arranges the power-on box subsystem of correspondence, it may be achieved on the spot information show, the function such as charge accounting.
(6) cable drum is provided with independent particle system, it is achieved the tension force of cable, output length, speed and motor is run and carries out closed loop control, it is ensured that boats and ships connect cable safety.
(7) the electric classification interlocking of equipment room electrical primary and secondary joint is set, ensures operation safety. Each junction box in power-on box subsystem and the corresponding cable drum in cable drum subsystem, each cable drum in cable drum subsystem and the corresponding ship power distribution system in ship power supply subsystem, when connecting, electrical primary circuit successively connects with communication line classification, after communication line connection and communication normally, electrical primary line joint closes again.
Accompanying drawing explanation
Fig. 1 is boats and ships bank base conversion power supply system structure schematic diagram of the present invention;
Fig. 2 monitoring and controlling system data channel connection diagram; Fig. 3 variable-frequency power sources subsystem controller function structure and interface diagram;
Fig. 4 variable-frequency power sources subsystem main circuit topology and function structure schematic diagram;
Fig. 5 variable-frequency power sources subsystem power module topology and function structure schematic diagram;
Fig. 6 variable-frequency power sources subsystem filtration module circuit topology schematic diagram;
Under the various grid-connect mode of Fig. 7 and site illustrates schematic diagram.
Detailed description of the invention
Below according to Figure of description and in conjunction with specific embodiments the present invention is described in further detail.
Embodiment one boats and ships bank base conversion power supply system is for providing shore-based power supply power supply for multiple berth, harbour.
Concrete as it is shown in figure 1, be a kind of boats and ships bank base conversion power supply system topological schematic diagram; System is made up of monitoring and controlling system, bank reference power supply subsystem, power-on box subsystem, cable drum subsystem, ship power supply subsystem. Monitoring and controlling system, each subsystem and equipment are equipped with independent control.
Monitoring and controlling system and bank reference power supply subsystem, power-on box subsystem are provided with independent communication passage between each junction box, transformer station, external system; Cable drum subsystem, ship power supply subsystem are provided with each independent communication bus and are connected with monitoring and controlling system; Monitoring and controlling system controller is obtained the trip information of each subsystem and equipment by each subsystem and device controller, is assigned control command; coordinate to control each subsystem, it is achieved output electrical system switching, grid-connect mode switching, load transfer, protection, function of measuring.
Output electrical system handoff functionality, different capacity output switching during including the switching between a road High voltage output or the output of multichannel low pressure, the output of multichannel low pressure.
Grid-connect mode handoff functionality, including bank side operation pull in shore grid-connect mode, shipboard operation pull in shore grid-connect mode, offshore grid-connect mode switching.
Load forwarding function is in various grid-connect mode, and rear grid-connected power supply is idle grid connection, and namely grid-connected rear ship power supply, variable-frequency power sources, load connect, rear grid power source not output; By adjusting the parameter of two power supplys, it is gradually reduced the output of former power supply, the output of grid power source after simultaneously increasing, two power supply gross outputs are to consistently equal to the power that load consumes; Last former power supply output is zero, is only provided output by rear grid power source for load.
Defencive function, including stream, overvoltage, overload, short circuit, insulation, electrical primary connects fault, electric secondary connects the protection such as fault.
Function of measuring, including record and display pull in shore boats and ships with bank reference power supply Connection Time, power consumption and expense etc.
It is provided with independent communication passage between each junction box and the corresponding cable drum in cable drum subsystem in power-on box subsystem, cable drum subsystem is provided with independent communication passage between each cable drum ship power distribution system corresponding to ship power supply subsystem, be provided with in pull in shore grid-connected and offshore process electrical primary and electric two chain step by step.
Bank reference power supply subsystem, power-on box subsystem, cable drum subsystem, ship power supply subsystem electrical primary part be sequentially connected with. The primary power source of system input is quoted from transformer station's power supply, according to boats and ships electricity requirement in berth, coordinates through internal system, each subsystem function is arranged, it is achieved multiple different electricity systems export, for multiple berth allocation problem shore-based power supply loops; This system can provide a road high pressure three-phase sine-wave power supply output, it is possible to provides the output of multichannel low voltage three-phase sine-wave power, and during multiple-channel output pattern, each road output size flexibly configurable.
Concrete as in figure 2 it is shown, be the monitoring and controlling system data channel connection diagram of a kind of boats and ships bank base conversion power supply system; Monitoring and controlling system is provided with controller, data switching exchane; Controller in monitoring and controlling system is be provided with stand-alone interface between bank reference power supply subsystem and power-on box subsystem; Data switching exchane connects monitoring and controlling system controller, cable drum subsystem controller, ship power supply subsystem controller, charging work station, security protection work station, video monitoring work station, data server, and realizes the data interaction between connected device.
Concrete as shown in Figure 3, Figure 4, the respectively variable-frequency power sources subsystem controller function structure of a kind of boats and ships bank base conversion power supply system and interface diagram, variable-frequency power sources subsystem main circuit topology and function structure schematic diagram.
The variable frequency power controller of bank reference power supply subsystem adopts hierarchical logic framework, is divided into three layers, respectively main control unit layer, function control unit layer and basic control unit layer. Main control unit layer and monitoring and controlling system communication, it is achieved being uniformly controlled variable-frequency power sources; Function control unit layer realizes deciliter logical process of variable-frequency power sources major loop breaker in middle device, the control rule realizing power model in variable-frequency power sources major loop is preset, is driven and relay protective scheme differentiation, data operation and storage, collects and process the data of sampling channel; Basic control unit layer realizes driving the motor-operating mechanism of variable-frequency power sources main circuit breaker in middle device, control signal after decomposing is distributed in variable-frequency power sources major loop each power model successively, realizing the coordination between power model to control, the data that each sampling unit is uploaded carry out number system transition and process.
Main control unit layer comprises main control unit, human-computer interaction interface; Main control unit is responsible for being uniformly controlled of variable-frequency power sources function, it is responsible for and switch is coordinated control unit, frequency conversion control unit, signal communicating between sampling channel unit and variable-frequency power sources subsystem and outside and controls to coordinate, coordinate the configuration of monitoring and controlling system completion system; The operational factor of human-computer interaction interface display variable-frequency power sources and status information, the mode of operation that variable-frequency power sources is set on the spot and selection control strategy.
Function control unit layer comprises frequency conversion control unit, switch coordinates control unit and sampling channel unit. The switching of realization and high-low pressure output mode switching command that frequency conversion control unit has been responsible for frequency conversion basic function is passed on; When variable-frequency power sources is High voltage output, coordination is controlled A, B, C individual-phase control unit by frequency conversion control unit, completes power model chain type concatenation, it is achieved high-pressure frequency-conversion output basic function; When variable-frequency power sources is low pressure output, control signal will be issued to power model control unit by A, B, C individual-phase control unit by frequency conversion control unit, power model control unit realize the basic function of low-voltage variable frequency output, multiple module paralleling expansion power. Switch is coordinated control unit and is kept signal communicating with each switch control unit, coordinates each switch deciliter and controls and on off state feedback. The sampled data of sampling channel unit real-time collecting Sampling device, and data are real-time transmitted to frequency conversion control unit and each corresponding power model control unit.
Basic control unit layer comprises input circuit breaker control unit, input catalyst control unit, high-low pressure output switching control unit, low pressure output switch control unit, output switch control unit, individual-phase control unit A, individual-phase control unit B, individual-phase control unit C, input sample unit 1, input sample unit 2, output sampling unit 3, output sampling unit 4. Input circuit breaker control unit, input catalyst control unit, high-low pressure output switching control unit, low pressure output switch control unit, output switch control unit control input chopper KK1, input catalyst KK2, high-low pressure output dip switch group KK3, low pressure output switching switches set KK4, output switch KK5 respectively, and collect the status information being controlled switch. Individual-phase control unit A, individual-phase control unit B, individual-phase control unit C, control A, B, C three phase power module group respectively when high-pressure frequency-conversion exports, and completes power model chain type concatenation, it is achieved high-pressure frequency-conversion output basic function; When low-voltage variable frequency exports, switching frequency conversion control unit issues the control signal of power model control unit, completes the basic function of the low-voltage variable frequency output of power model, multiple module paralleling expansion power.
Variable-frequency power sources main circuit includes input chopper KK1, input catalyst KK2, phase-shifting transformer T11, A power model group AA1, B phase power model group BB1, C phase power model group CC1, high-low pressure output dip switch group KK3, filtration module group LL1, low pressure output switching switches set KK4, output switch group KK5.
Input chopper KK1 one end inputs as variable-frequency power sources main circuit, connects transformer station's power supply, and the other end is connected with input catalyst KK2; The other end of KK2 is connected with a winding of phase-shifting transformer TT1; Each secondary side winding of phase-shifting transformer TT1 is according to the ac input end of a power model in order connection power model group AA1, BB1, CC1; The outfan of each power model in power model group AA1, BB1, CC1 is sequentially connected with in high-low pressure output dip switch group KK3 and respectively switches switch; When for High voltage output, each High voltage output closing of contact switching switch in KK3, low pressure output is got an electric shock and is disconnected, and the power model high-voltage output end in each power model group is sequentially connected in series, and composition three-phase is star-like, the chain type attachment structure of multimode series connection; When exporting for low pressure, in KK3, the High voltage output contact of each switching switch disconnects, and low pressure exports Guan Bi of getting an electric shock, and each power model is all as independently exporting three phase mains; In KK3, the other end of each switching switch is connected with each filter unit in filtration module group LL1; In LL1, each filter unit other end is connected with low pressure output switching switches set KK4; When exporting for low pressure, it is possible to by the grid switching operation of KK4, adjust the output power value of the concrete branch road of variable-frequency power sources; The other end of KK4 is connected with respectively switching in output switch group KK5; In KK5, the other end of each switch is as the output of variable-frequency power sources. Input sample unit CPT1 is set in KK1 and KK2 junction; Input sample unit CPT2 is set in the junction of KK2 and TT1; Outlet side sampling unit group CPT3 is set in the junction of KK4 and KK5, sampling module is set for the output of each road; Outlet side sampling unit group CPT4 is set at KK5 outlet side, sampling module is set for the output of each road.
Arranged by the pattern of variable frequency power controller and parameter, each control unit is mutually coordinated with variable-frequency power sources main circuit, after completing the switching of three power model groups, a high-low pressure switching switches set, a low pressure output switching switches set, variable-frequency power sources can export a road 6.0KV/50HZ or 6.6KV/60HZ three-phase sine-wave power supply, also exportable multichannel 0.4KV/50HZ or 0.45KV/60HZ three-phase sine-wave power supply, and during multiple-channel output pattern, each road big I of output needs flexible configuration according to boats and ships in concrete berth.
Arrange according to monitoring and controlling system and variable-frequency power sources subsystem enable on the spot, it is possible to the supply line's end enabling or closing variable-frequency power sources compensates function. Electrical primary line drop model preset in variable-frequency power sources subsystem, according to exporting the voltage and current detected in real time in variable-frequency power sources, adjusts output, it is ensured that the output voltage of line end of system electrical meets burden requirement in real time.
Concrete as it is shown in figure 5, be variable-frequency power sources subsystem power module topology and the function structure schematic diagram of a kind of boats and ships bank base conversion power supply system; Power model is divided into module control unit and module main circuit.
Module control unit be responsible for inside modules dc bus signals collecting, accept the control instruction of individual-phase control unit, inside modules protection, send driving signal to main circuit in module, it is possible to from sampling channel unit obtain each output branch road parameter information. During High voltage output, module control unit, according to the control signal of individual-phase control unit, inside modules dc bus signal, completes module output and controls; During low pressure output, the signal of the correspondence output branch road that module control unit feeds back according to the control signal of individual-phase control unit, inside modules dc bus signal, sampling channel unit, complete module output and control.
Module main circuit comprises rectification circuit D11 and inverter circuit IGBT11, and the dc bus of two parts circuit is connected; The AC of rectification circuit D11 inputs as power model, with the secondary of a phase-shifting transformer TT1 around being connected; The AC output of inverter circuit IGBT11, as the output of power model, is connected with in KK3 switching switch; Dc bus is provided with sampling unit CPT11.
Inverter circuit IGBT11 is integrated with insulated gate bipolar transistor IGBT or metal oxide layer semiconductor field-effect transistor MOSFET, supporting adapter circuit, drives signal processing circuit, autoprotection circuit etc., as independent circuit unit.
Specifically as shown in Figure 6, for the variable-frequency power sources subsystem filtration module circuit topology schematic diagram of a kind of boats and ships bank base conversion power supply system; Filtration module comprises LCL filter circuit and common-mode filter L.
Concrete as it is shown in fig. 7, be under a kind of boats and ships bank base various grid-connect mode of conversion power supply system and site explanation schematic diagram; The grid-connect mode that pulls in shore of system, can be configured by the human-computer interaction interface of monitoring and controlling system; The operation of bank side is pulled in shore under grid-connect mode, and grid-connected, load transfer operation is dominated by bank reference power supply subsystem, other Subsystem complete; Shipboard operation is pulled in shore under grid-connect mode, and grid-connected, load transfer operation is dominated by ship power supply subsystem, other Subsystem complete; Under offshore grid-connect mode, grid-connected, load transfer operation is dominated by ship power supply subsystem, other Subsystem complete.
Bank side operates the grid-connect mode that pulls in shore, and site is bank reference power supply subsystem output switch; Before grid-connected, by ship power supply subsystem access switch, between ship power supply subsystem and bank reference power supply subsystem electrical primary switch Guan Bi, after bank reference power supply subsystem detects ship power supply parameter, the output parameter of adjustment variable-frequency power sources subsystem is consistent with ship power supply, realize the grid-connected same period at also two ends, site, Guan Bi bank reference power supply subsystem output switch, completes grid-connected; Bank reference power supply subsystem and ship power supply subsystem cooperate afterwards, complete load transfer operation, then disconnect ship power supply subsystem output switch, excise ship power supply. Shipboard operates the grid-connect mode that pulls in shore, and site is that ship power supply subsystem accesses switch; Before grid-connected, by bank reference power supply subsystem output switch, between bank reference power supply subsystem and ship power supply subsystem electrical primary switch Guan Bi, after ship power supply subsystem detects bank reference power supply parameter, adjust through communication that the output parameter of variable-frequency power sources subsystem is consistent with ship power supply, the grid-connected same period at realization also two ends, site, Guan Bi ship power supply subsystem accesses switch, completes grid-connected; Bank reference power supply subsystem and ship power supply subsystem cooperate afterwards, complete load transfer operation, then disconnect ship power supply subsystem output switch, excise ship power supply. Offshore grid-connect mode, and the output switch that site is ship power supply subsystem; After ship power supply subsystem detects bank reference power supply parameter, the output parameter of adjustment ship power supply is consistent with bank reference power supply, realize the grid-connected same period at also two ends, site, and the output switch of Guan Bi ship power supply subsystem completes grid-connected; Bank reference power supply subsystem and ship power supply subsystem cooperate afterwards, complete load transfer operation, then disconnect bank reference power supply subsystem output switch and ship power supply subsystem access switch, excise bank reference power supply.
In sum, to realize flow process as follows in the concrete application of a kind of boats and ships bank base conversion power supply system of embodiment:
1, it is designed type selecting according to the actual demand in berth in harbour, selects capacity and the low pressure output way of variable-frequency power sources, select quantity and the capacity of supporting bank base power-on box subsystem and cable drum subsystem.
2, the power model of selected variable-frequency power sources subsystem is assembled. The assemblies such as the respective modules control unit needed for power model, rectification circuit, inverter circuit, dc bus sampling are assembled, the electrical primary within link block, electric secondary circuit.
3, selected each subsystem, the electrical primary of connexon internal system, electric secondary circuit are assembled.
4, each subsystem electrical primary part is connected. According to design selection, the electrical primary part of each subsystem is attached.
5, monitoring and controlling system is assembled. The hardware devices such as assembling charging work station, security protection work station, video monitoring work station, data server, switch, carry out electric secondary connection.
6, each subsystem electric secondary part is connected with monitoring and controlling system.
7, control strategy is run in monitoring and controlling system human-computer interaction interface input correspondence.
8, self-inspection is started; Return if any fault-signal, fix a breakdown or be again started up self-inspection after shielding corresponding subsystem or module; If fault-free signal returns, starting fully automatic operation pattern, system is properly functioning.
9, treating that boats and ships enter sufferance quay, bank base conversion power supply system electrical electrical secondary system connects, and communication is normal, carries out also net operation and load transfer according to the grid-connected strategy pre-set.
10, when boats and ships offshore, carry out also net operation and load transfer according to the grid-connected strategy pre-set, after disconnecting electrical primary connection, then disconnect electric secondary connection.
A kind of boats and ships bank base conversion power supply system in embodiment typical case application is provided with error protection, specific as follows:
1, in variable-frequency power sources subsystem, each power model hardware protection includes IGBT or MOSFET error protection and the switch fault protection of inverter circuit in each module. After module control unit detects module failure, the driving pulse of block respective modules, malfunctioning module is out of service, send sound and light alarm signal, fault-signal is uploaded to place variable frequency power controller, fault-signal is uploaded monitoring and controlling system by variable frequency power controller, finally shows fault message on the human-computer interaction interface of monitoring and controlling system.
2, the protection of each subsystem hardware includes sampling sensor exception and dysfunction protection. After subsystem controller detects subsystem fault, the subsystem broken down is out of service, sends sound and light alarm signal, fault-signal is uploaded monitoring and controlling system, finally shows fault message on the human-computer interaction interface of monitoring and controlling system.
3, in variable-frequency power sources subsystem, each power model software protection includes overvoltage protection, overcurrent protection, overheat protector, sampling sensor error protection, module communication fault; Each module software protection act definite value is artificial or self adaptation is arranged; after module control unit detects fault; block respective modules driving pulse; send sound and light alarm signal; fault-signal is uploaded to place variable frequency power controller; fault-signal is uploaded monitoring and controlling system by variable frequency power controller, finally shows fault message on the human-computer interaction interface of monitoring and controlling system.
4, the protection of each subsystem software includes overvoltage protection, overcurrent protection, sampling sensor error protection, communication failure; Each subsystem software protection act definite value is artificial or self adaptation is arranged; after subsystem controller detects fault; the subsystem broken down is out of service; send sound and light alarm signal; fault-signal is uploaded monitoring and controlling system, on the human-computer interaction interface of monitoring and controlling system, finally shows fault message.
A kind of boats and ships bank base conversion power supply system in above example typical case application can occur four kinds of mode of operations in the middle of running, specific as follows:
1, Auto-Sensing Mode, control strategy has been preset, boats and ships bank base conversion power supply system start-up, and system carries out power-on self-test; If system mode is normal, then displays whether to start on monitoring and controlling system human-computer interaction interface, wait that next step operates; If there is the system failure, showing fault message, No starting at human-computer interaction interface, after manually fixing a breakdown, being again started up self-inspection.
2, operational mode, after powering on for boats and ships bank base conversion power supply service system, System self-test is normal, enters fully automatic operation pattern according to the control strategy system arranged in advance.
3, fault mode, after boats and ships bank base conversion power supply system electrification, System self-test does not pass through, or occurs hardware fault or software fault in running, causes that system cannot complete the control strategy pre-set, and system enters fault mode.
4, shutdown mode, occur emergency protection act or artificially carry out system " jerk " operate time, boats and ships bank base conversion power supply system enter stopped status.
The foregoing is only to explain presently preferred embodiments of the present invention; it is not intended to according to this present invention be done any pro forma restriction; therefore, all have under identical creation spirit, done any modification for the present invention or change, all must include the invention is intended to protection category.

Claims (10)

1. a boats and ships bank base conversion power supply system, this system is made up of monitoring and controlling system, bank reference power supply subsystem, power-on box subsystem, cable drum subsystem, ship power supply subsystem, it is characterised in that:
Bank reference power supply subsystem, power-on box subsystem, cable drum subsystem, ship power supply subsystem electrical primary part be sequentially connected with, the power supply of described bank reference power supply subsystem inputs quoted from harbour Central Substations power supply, bank reference power supply subsystem is according to boats and ships electricity requirement in berth, produce multiple different electricity system output, for multiple berth allocation problem shore-based power supply loops;
Described power-on box subsystem includes the multichannel high pressure from the extraction of bank reference power supply subsystem difference electricity outfan and/or low pressure power-on box;
Described cable drum subsystem includes many group high pressure and/or low-voltage cable reel, described ship power supply subsystem is that the boats and ships high pressure in each berth and/or low-voltage distribution system, described high pressure and/or low-voltage cable reel are separately positioned between described multichannel high pressure and/or low pressure power-on box and each boats and ships high pressure and/or low-voltage distribution system;
Monitoring and controlling system and bank reference power supply subsystem, power-on box subsystem are provided with independent communication passage between each junction box, harbour Central Substations; Cable drum subsystem, ship power supply subsystem are provided with each independent communication bus and are connected with monitoring and controlling system; Monitoring and controlling system controller obtains the trip information of each subsystem, and assigns control command to each subsystem, coordinates to control each subsystem, it is achieved output electrical system switching, grid-connect mode switching, load transfer, protection, function of measuring.
2. boats and ships bank base conversion power supply system according to claim 1, it is characterised in that:
Monitoring and controlling system, each subsystem are equipped with independent control.
3. boats and ships bank base conversion power supply system according to claim 1 and 2, it is characterised in that:
It is provided with independent communication passage between each junction box and the corresponding cable drum in cable drum subsystem in power-on box subsystem, cable drum subsystem is provided with independent communication passage between each cable drum ship power distribution system corresponding to ship power supply subsystem.
4. boats and ships bank base conversion power supply system according to claim 3, it is characterised in that:
Described monitoring and controlling system is provided with monitoring and controlling system controller, data switching exchane; The independent communication passage that monitoring and controlling system controller is between bank reference power supply subsystem and power-on box subsystem is provided with stand-alone interface; Data switching exchane connects monitoring and controlling system controller, cable drum subsystem controller, ship power supply subsystem controller, charging work station, security protection work station, video monitoring work station, data server.
5. boats and ships bank base conversion power supply system according to claim 1, it is characterised in that:
The grid-connect mode that pulls in shore of ship power supply subsystem includes the operation of bank side and pulls in shore grid-connect mode and shipboard operation is pulled in shore grid-connect mode;
The operation of bank side is pulled in shore under grid-connect mode, and grid-connected, load transfer operation is dominated by bank reference power supply subsystem, other Subsystem complete; Shipboard operation is pulled in shore under grid-connect mode, and grid-connected, load transfer operation is dominated by ship power supply subsystem, other Subsystem complete.
6. boats and ships bank base conversion power supply system according to claim 5, it is characterised in that:
In bank side, operation is pulled in shore under grid-connect mode, and site is bank reference power supply subsystem output switch; Before grid-connected, by ship power supply subsystem access switch, between ship power supply subsystem and bank reference power supply subsystem electrical primary switch Guan Bi, after bank reference power supply subsystem detects ship power supply parameter, the output parameter of adjustment variable-frequency power sources subsystem is consistent with ship power supply, realize the grid-connected same period at also two ends, site, Guan Bi bank reference power supply subsystem output switch, completes grid-connected; After grid-connected, bank reference power supply subsystem and ship power supply subsystem cooperate, and complete load transfer operation, then disconnect ship power supply subsystem output switch, excise ship power supply.
7. boats and ships bank base conversion power supply system according to claim 5, it is characterised in that:
Pull in shore under grid-connect mode in shipboard operation, and site is that ship power supply subsystem accesses switch; Before grid-connected, by bank reference power supply subsystem output switch, between bank reference power supply subsystem and ship power supply subsystem electrical primary switch Guan Bi, after ship power supply subsystem detects bank reference power supply parameter, adjust through communication channel that the output parameter of bank reference power supply subsystem is consistent with ship power supply, the grid-connected same period at realization also two ends, site, Guan Bi ship power supply subsystem accesses switch, completes grid-connected; After grid-connected, bank reference power supply subsystem and ship power supply subsystem cooperate, and complete load transfer operation, then disconnect ship power supply subsystem output switch, excise ship power supply.
8. boats and ships bank base conversion power supply system according to claim 1, it is characterised in that:
Under the offshore grid-connect mode of ship power supply subsystem, grid-connected, load transfer operation is dominated by ship power supply subsystem, other Subsystem complete.
9. boats and ships bank base conversion power supply system according to claim 8, it is characterised in that:
At offshore grid-connect mode, and the output switch that site is ship power supply subsystem; After ship power supply subsystem detects bank reference power supply parameter, the output parameter of adjustment ship power supply is consistent with bank reference power supply, realize the grid-connected same period at also two ends, site, and the output switch of Guan Bi ship power supply subsystem completes grid-connected; After grid-connected, bank reference power supply subsystem and ship power supply subsystem cooperate, and complete load transfer operation, then disconnect bank reference power supply subsystem output switch and ship power supply subsystem access switch, excise bank reference power supply.
10. boats and ships bank base conversion power supply system according to claim 1, it is characterised in that:
Bank reference power supply subsystem is made up of variable frequency power controller and variable-frequency power sources main circuit; Variable frequency power controller adopts hierarchical logic framework, is divided into three layers, respectively main control unit layer, function control unit layer and basic control unit layer; Main control unit layer and monitoring and controlling system communication, it is achieved being uniformly controlled variable-frequency power sources; Function control unit layer realizes deciliter logical process of variable-frequency power sources major loop breaker in middle device, it is achieved in variable-frequency power sources major loop, regular default, the driving of the control of power model and relay protective scheme differentiate, collect and process the data of sampling channel; Described basic control unit layer realizes driving the motor-operating mechanism of variable-frequency power sources main circuit breaker in middle device, control signal after decomposing is distributed in variable-frequency power sources major loop each power model successively, realizing the coordination between power model to control, the data that each sampling unit is uploaded carry out number system transition and process.
Every when described variable-frequency power sources main circuit is High voltage output arranges a power model group mutually, each power model group contains some power models, each power model obtains input from corresponding transformer secondary winding of shifting to respectively, the output of each power model connects with a switch in corresponding high-low pressure switching switches set respectively, switch is provided with normally opened and normally closed interlocking contact, a road High voltage output or the output of multichannel low pressure is realized by controlling switch normally-open normally-close switching, it is that the power model in each power model group is sequentially connected in series the phase exported in three-phase during High voltage output, it is the output of each power model independence three-phase during low pressure output, during the output of multichannel low pressure, by controlling the switch in low pressure output switching switches set, it is achieved multichannel power model output output-parallel, watt level can flexible configuration.
CN201610094211.5A 2016-02-19 2016-02-19 Ship shore-based variable frequency power supply system Pending CN105633957A (en)

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CN107769381B (en) * 2017-10-27 2020-11-03 中远海运科技股份有限公司 Ship shore-based power supply information monitoring system and method
CN110932271A (en) * 2019-12-13 2020-03-27 江苏中智海洋工程装备有限公司 Boats and ships bank electricity master-slave control multiplex condition adaptive system

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