CN213602565U - Four-quadrant water-cooled high-voltage shore power supply system - Google Patents
Four-quadrant water-cooled high-voltage shore power supply system Download PDFInfo
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- CN213602565U CN213602565U CN202022826099.4U CN202022826099U CN213602565U CN 213602565 U CN213602565 U CN 213602565U CN 202022826099 U CN202022826099 U CN 202022826099U CN 213602565 U CN213602565 U CN 213602565U
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Abstract
The utility model relates to a four-quadrant water-cooled high pressure bank electricity electrical power generating system, this bank electricity electrical power generating system mainly comprise high-pressure bank electricity power, inlet wire circuit breaker, the circuit breaker of being qualified for the next round of competitions. The shore power supply is connected with a power grid through an incoming line breaker, is connected with a shore power connection box through an outgoing line breaker and consists of three-phase power units in a cascading mode; the power unit network side adopts an LC filter circuit and adopts a control mode of sine wave feedback. The shore power supply system has a four-quadrant operation function, and can feed back reverse power generated during ship grid connection to a power grid; the shore power supply system has an output current limiting function and can effectively inhibit the switching-on impact current generated during grid connection; the shore power supply adopts a water-cooling heat dissipation mode, so that the reliability, stability and originality of the system are improved.
Description
Technical Field
The utility model relates to a high-voltage bank electricity power especially relates to a water-cooled high-voltage bank electricity electrical power generating system with four-quadrant operation function.
Background
Generally, ships at harbor adopt fuel oil generators to supply power to the ships, so that great environmental pollution and noise pollution are brought to harbors, meanwhile, a large amount of energy consumption problems also exist in fuel oil power generation, and in order to solve the problems, shore power supplies are widely applied, especially high-voltage shore power supplies.
The conventional high-voltage shore power supply only has the function of two-quadrant operation, namely, energy can only flow from the shore power supply to a load; when the shore power supply is connected with the ship in a grid mode, errors may exist in conventional synchronous grid-connection operation, reverse power energy generated in grid connection is reversely fed to the shore power supply, and the bus voltage of the shore power supply is increased, so that the shore power supply reports an overvoltage fault and fails in grid connection. Air-cooled heat dissipation is generally adopted for a conventional shore power supply, so that a large amount of heat loss is accumulated in a container, the internal environment temperature of the container is increased, and the operation efficiency of equipment is affected.
Disclosure of Invention
The to-be-solved technical problem of the utility model is to provide a water-cooled high-voltage bank electricity electrical power generating system with four-quadrant operation function, the reverse power repayment that produces to the electric wire netting when can making boats and ships incorporated into the power networks.
In order to solve the technical problem, the high-voltage shore power supply system comprises a high-voltage shore power supply, a power grid and a power connection box, wherein the high-voltage shore power supply is connected with the power grid through an incoming line breaker and is also connected with the power connection box through an outgoing line breaker; the power receiving box is connected with a power receiving device on the ship, a synchronization device connected with the power receiving device and a power bus of the ship in a grid mode exists between the power receiving device and the power bus of the ship, and the power receiving box further comprises a power generation device on the ship.
As an improvement of the utility model, above-mentioned high pressure bank power supply contains phase-shifting transformer, LC filter circuit, cascades contravariant/repayment unit, main control board and the human-computer interface who constitutes by multiunit three-phase power unit.
As the utility model discloses a another kind of improvement, contravariant/repayment unit is passed through LC filter circuit through power unit net side and is linked to each other with the phase-shifting transformer secondary side, and power unit energy repayment mode adopts the sine wave repayment, very big reduction the harmonic content of repayment to the energy of electric wire netting.
As the utility model discloses a further improvement, bank electricity power possesses the output current limiting function, when having the transformer on the boats and ships, the impulse current that produces when can effectual suppression output combined floodgate. The shore power supply adopts water cooling heat dissipation, and the operation efficiency of the equipment can be effectively improved in a completely closed heat dissipation environment.
Compared with the prior art, the utility model discloses the effectual inverse power problem of having solved bank electricity power and producing when the operation of being incorporated into the power networks makes the energy pass through bank electricity power repayment to the electric wire netting, has ensured the reliability that the bank electricity power is incorporated into the power networks, more energy-concerving and environment-protective. The shore power supply has an output current limiting function, and a transformer is arranged on part of ships, so that when the closing grid-connected operation is carried out, the impact current generated by the closing operation can be effectively inhibited, an output current limiting loop is cancelled, and the cost and the size of equipment are reduced.
Drawings
The present invention will be described in further detail with reference to the accompanying circuit structure and principle.
Figure 1 is the primary loop diagram of the ship connection of the four-quadrant water-cooled high-voltage shore power supply system of the utility model.
Fig. 2 is a schematic diagram of the four-quadrant water-cooled high-voltage shore power supply system shown in fig. 1.
Fig. 3 is a power unit topology schematic diagram of the four quadrant water cooled high voltage shore power supply system shown in fig. 1.
Detailed Description
Fig. 1 shows a primary circuit diagram of a connection between a water-cooled high-voltage four-quadrant shore power supply and a ship, wherein a shore power supply system comprises an incoming line breaker AH of the shore power supply, a high-voltage shore power supply VFPS and an outgoing line breaker BH of the shore power supply, the incoming line breaker AH is connected with a power receiving device CH of a ship part through a power connection box, and a synchronization device DH connected to a grid exists between the power receiving device CH and a ship power supply bus.
Fig. 2 shows a phase-shifting transformer, a filter loop, an inversion/feedback unit composed of multiple cascaded sets of power units, a main control board, and a human-machine interface HMI.
The power unit network side of fig. 3 includes an LC filter circuit, and the main control board drives and controls the feedback and inversion modules of the power unit, and the power unit transmits data through the optical fiber and the module control system.
The implementation steps are as follows: the shore power supply is provided with a human-computer interface HMI, and current operation data of the shore power supply can be controlled and observed in real time through the human-computer interface HMI; the shore power supply module control system is communicated with a main control board of the power unit through optical fibers; the power unit is connected with the two sides of the phase-shifting transformer through an LC filter circuit; and the multiple groups of power units form three-phase output in a cascading mode.
The inversion feedback system of the shore power supply consists of a plurality of groups of power units with LC filter circuits, and each phase of power unit forms three-phase output of the shore power supply in a cascading mode.
The primary side of a phase-shifting transformer is directly connected with a high-voltage power supply, the secondary side of the phase-shifting transformer is connected with the input of a power unit through an LC (inductance-capacitance) filter circuit, a plurality of groups of power units form three-phase output of a shore power supply in a cascading mode, a module control system detects the direct-current bus voltage of the units in real time and controls the current working state of the shore power supply through the direct-current bus voltage of the power units, and energy flows from the shore power supply to a ship system under the normal operation condition; when the ship system has reverse power to the shore power supply, the module control system detects that the voltage of a direct-current bus of the power unit is increased, and feeds back voltage with the same amplitude, phase and frequency to the power grid by controlling the rectification feedback IGBT, so that energy flows to the power grid, bidirectional flow of the energy is realized, and the running reliability of the shore power supply is improved.
Claims (4)
1. A four-quadrant water-cooled high-voltage shore power supply system is connected with a ship through an electric connection box, and is characterized in that the high-voltage shore power supply system comprises a high-voltage shore power supply (VFPS) which is connected with a power grid through an incoming line breaker (AH) and is connected with the electric connection box through an outgoing line Breaker (BH); the power connection box is connected with a power receiving device (CH) on the ship, a synchronization Device (DH) connected with the power receiving device (CH) and a power bus of the ship in a grid mode exists between the power receiving device (CH) and the power bus of the ship, and the power connection box further comprises a power generation device (GH) on the ship.
2. The four-quadrant water-cooled high-voltage shore power supply system according to claim 1, wherein: the high-voltage shore power supply (VFPS) comprises a phase-shifting transformer, an LC filter circuit, an inversion/feedback unit formed by cascading a plurality of groups of three-phase power units, a main control board and a human-machine interface (HMI).
3. The four-quadrant water-cooled high-voltage shore power supply system according to claim 2, wherein: and the inversion/feedback unit is connected with the secondary side of the phase-shifting transformer through an LC filter circuit by the network side of the power unit.
4. The four-quadrant water-cooled high-voltage shore power supply system according to claim 1, wherein: and the shore power supply system adopts water cooling for heat dissipation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022826099.4U CN213602565U (en) | 2020-12-01 | 2020-12-01 | Four-quadrant water-cooled high-voltage shore power supply system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202022826099.4U CN213602565U (en) | 2020-12-01 | 2020-12-01 | Four-quadrant water-cooled high-voltage shore power supply system |
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| CN213602565U true CN213602565U (en) | 2021-07-02 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113852078A (en) * | 2021-12-01 | 2021-12-28 | 成都希望电子研究所有限公司 | Modular shore power supply system |
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- 2020-12-01 CN CN202022826099.4U patent/CN213602565U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113852078A (en) * | 2021-12-01 | 2021-12-28 | 成都希望电子研究所有限公司 | Modular shore power supply system |
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