Abstract
An energy supply system for a water-bound device and in particular to a corresponding method, including: a first DC voltage bus for a first DC voltage; a second DC voltage bus for a second DC voltage; and a first energy source which has at least two supplying electrical connections to the DC voltage buses, wherein at least one of the DC voltage buses has sections.
Claims
1. A power supply system for a water-bound facility, comprising: a first DC voltage bus for a first DC voltage and a second DC voltage bus for a second DC voltage, a first power source having at least two feeding electrical connections to the DC voltage buses, wherein at least one of the DC voltage buses has sections, wherein the first DC voltage bus is at, or provides, a first DC voltage level and the second DC voltage bus is at, or provides, a second DC voltage level, wherein the first DC voltage level is higher than the second DC voltage level.
2. The power supply system as claimed in claim 1, wherein a first feeding connection of the at least two feeding electrical connections feeds a first section and a second feeding connection of the at least two feeding electrical connections feeds a second section of the same DC voltage bus or wherein the second feeding connection of the at least two feeding electrical connections feeds a section of the other DC voltage bus.
3. The power supply system as claimed in claim 1, wherein one of the at least two feeding connections feeds one of the DC voltage buses from the other DC voltage bus.
4. The power supply system as claimed in claim 1, further comprising: a third and a fourth feeding connection of the first power source, wherein two of the at least four feeding connections are intended to feed the first DC voltage bus in different sections of the first DC voltage bus and wherein two other of the at least four feeding connections are adapted to feed the second DC voltage bus in different sections of the second DC voltage bus.
5. The power supply system as claimed in claim 1, wherein the water-bound facility has a first zone and a second zone, wherein the first DC voltage bus and/or the second DC voltage bus extends via the first zone and/or the second zone, wherein the first power source is adapted to feed sections of the first DC voltage bus and/or of the second DC voltage bus in different zones.
6. The power supply system as claimed in claim 1, having further comprising: a second power source, wherein the first power source in the first zone is intended to feed at least one DC voltage bus of the at least two DC voltage buses and wherein the second power source in the second zone is intended to feed at least one DC voltage bus of the at least two DC voltage buses.
7. The power supply system as claimed in claim 1, wherein one section of the first DC voltage bus has both a feeding connection to the first power source and a further feeding electrical connection to the second power source.
8. The power supply system as claimed in claim 1, wherein one section of the second DC voltage bus has both a feeding connection to the first power source and a further feeding electrical connection to the second power source.
9. The power supply system as claimed in claim 1, wherein at least one of the DC voltage buses is in the form of a ring bus.
10. The power supply system as claimed in claim 1, wherein the first DC voltage bus is adapted to feed the second DC voltage bus.
11. A method for operating a power supply system for a water-bound facility, the method comprising: supplying a first and a second DC voltage bus with power; wherein the first DC voltage bus comprises a first DC voltage and the second DC voltage bus comprises a second DC voltage, wherein power is supplied via a first power source that has at least two feeding electrical connections to the DC voltage buses, wherein at least one of the DC voltage buses has sections, wherein the first DC voltage bus is at, or provides, a first DC voltage level and the second DC voltage bus is at, or provides, a second DC voltage level, wherein the first DC voltage level is higher than the second DC voltage level.
12. A method for operating a power supply system for a water-bound facility, the method comprising: supplying power via a power supply system as claimed in claim 1.
13. The power supply system as claimed in claim 6, wherein at least part of the power supply system is subdivided in a zone-dependent fashion.
14. The power supply system as claimed in claim 7, wherein sections of the first DC voltage bus subdivide said first DC voltage bus.
15. The power supply system as claimed in claim 8, wherein sections of the second DC voltage bus subdivide said second DC voltage bus.
Description
BRIEF DESCRIPTION OF THE DRAWINGS
[0091] The invention is described by way of illustration below with reference to figures. The same reference signs are used for units of the same type. In the figures:
[0092] FIG. 1 shows a ship with a first division into zones,
[0093] FIG. 2 shows a ship with a second division into zones,
[0094] FIG. 3 shows a ship with a third division into zones,
[0095] FIG. 4 shows a first circuit diagram for a power supply system,
[0096] FIG. 5 shows a second circuit diagram for a power supply system,
[0097] FIG. 6 shows a third circuit diagram for a power supply system,
[0098] FIG. 7 shows a fourth circuit diagram for a power supply system,
[0099] FIG. 8 shows a fifth circuit diagram for a power supply system,
[0100] FIG. 9 shows a sixth circuit diagram for a power supply system,
[0101] FIG. 10 shows a seventh circuit diagram for a power supply system,
[0102] FIG. 11 shows winding systems,
[0103] FIG. 12 shows an equivalent circuit,
[0104] FIG. 13 shows an eighth circuit diagram for a power supply system,
[0105] FIG. 14 shows a ninth circuit diagram for a power supply system,
[0106] FIG. 15A shows part A of a tenth circuit diagram for a power supply system, and
[0107] FIG. 15B shows part B of the tenth circuit diagram for a power supply system.
DETAILED DESCRIPTION OF INVENTION
[0108] The depiction according to FIG. 1 shows a ship 101 with a first division into zones. The depiction shows a first zone 31, a second zone 32, a third zone 33 and a fourth zone 34. These zones are bounded by bulkheads 71. Another is provided by a watertight deck 70, for example.
[0109] The depiction according to FIG. 2 shows a ship 101 in a kind of plan view, and top view, with a second division into zones 31 to 39. The zones can also be divided into longitudinal zones 102 and transverse zones 103. A power supply system 100 extends via the zones. The power supply system has a first DC voltage bus 11 and a second DC voltage bus 12. The DC voltage buses 11 and 12 extend via the zones in different ways. In another configuration, the partitioning in the longitudinal zones can also be dispensed with. This is not depicted, however.
[0110] The depiction according to FIG. 3 shows a ship 100 with a third division into zones 31 to 39, the zones 37, 38 and 39 being central zones inside the ship and being bounded by further zones on the port side and the starboard side. The power supply system 100 has a first DC voltage bus 11 and a second DC voltage bus 12, the first DC voltage bus 11 being a medium-voltage bus and the second DC voltage bus 12 being a low-voltage bus, for example.
[0111] The depiction according to FIG. 4 shows a first circuit diagram for a power supply system 100. The depiction has a first zone 31, a second zone 32 and a third zone 33. The zones are marked by zone boundaries 105. The first zone 31 contains a first power source 21. The first power source 21 comprises a diesel engine 1 and a generator 5. The second zone 32 contains a second power source 22. The second power source 22 comprises a diesel engine 2 and a generator 6. A first DC voltage bus 11 extends both into the first zone 31 and into the second zone 32, and also into the third zone 33, and forms a ring bus. A second DC voltage bus 12 extends both into the first zone 31 and into the second zone 32, and also into the third zone 33, and also forms a ring bus. The buses may also not be embodied as ring buses, but this is not depicted. The first DC voltage bus 11 is at, or provides, a first DC voltage level 13. The second DC voltage bus 12 is at, or provides, a second DC voltage level 14. The first DC voltage bus 11 is divisible into sections 61 to 66. The division is accomplished by means of MV switching devices 81. The first DC voltage bus 11 is thus at a medium voltage. The second DC voltage bus 12 is also divisible into sections 61 to 66. The division is accomplished by means of LV switching devices 80. The second DC voltage bus 12 is thus at a low voltage. A three-phase bus (AC bus) 15 is able to be fed via the second DC voltage bus 12. Batteries 91 are also connected to the second DC voltage bus 12. The loads shown for the second DC voltage bus 12 are motors (asynchronous motors, synchronous motors and/or PEM motors) 85, which are operable via inverters 93, and further DC loads 86. For the purpose of feeding the DC voltage buses 11 and 12 there is provision in each case for a first feed 51, a second feed 52, a third feed 53 and a fourth feed 54. These feeds are feeding electrical connections for the DC buses. The generator 5 uses the first feed 51 to feed the first section 61, the first feed 51 comprising a rectifier 95 and a switch 84. The generator 5 uses the second feed 52 to feed the fourth section 64 of the first DC voltage bus 11. The second feed 52 in the first zone 31 likewise comprises a rectifier 96 and a switch 84. The third feed 53 comprises a medium-voltage transformer 105 and a rectifier 97. The third feed 53 feeds the first section 61 of the second DC voltage bus 12. The fourth feed 54 comprises a switch 84 and a DC/DC chopper 104. The fourth feed 54 therefore connects a section 64 of the first DC bus 11 to a section 61 of the second DC bus 12. In the second zone 32, the generator 6 is connected to the DC buses 11 and 12 in the same way via the feeds 1 to 4, as described in the first zone 31.
[0112] The depiction according to FIG. 5 shows a second circuit diagram for a power supply system 100. An enlarged detail is shown here in comparison with FIG. 4. In contrast to FIG. 4, FIG. 5 depicts a variation by showing a generator 5 that has only three feeding electrical connections 51, 53 and 54 to the DC buses 11 and 12.
[0113] The depiction according to FIG. 6 shows a third circuit diagram for a power supply system 100. It is shown here that the loads connected to the first DC voltage bus 11 can be ship drive motors 106, 107, which are each intended to drive a propeller 108. The motor 106 is double-fed via the inverters 93 and 94. The motor 107 is single-fed.
[0114] It is shown here that the other loads connected to the DC voltage bus 11 can be auxiliary drives, e.g. compressor drive 207.
[0115] It is shown here that a three-phase system can be produced by means of an active inverter, e.g. a modular multilevel converter (MMC) with/without filter 208, which is connected to the DC voltage bus 11.
[0116] It is shown here that there is provision for different variants as power infeed.
[0117] One configuration shown is a generator 201 having an assigned rectifier.
[0118] One configuration shown is a generator 200 having at least two winding systems and two assigned rectifiers for use in the case of outputs that cannot be realized for one rectifier.
[0119] As one configuration, these rectifiers can also feed a generator having one winding system (not shown) in parallel.
[0120] As one configuration, the generator 202 uses a rectifier to feed the first DC voltage bus 11 and uses a transformer 205 and a rectifier 206 to feed the second DC voltage bus 12.
[0121] One configuration shown is an infeed 204, as shore connection.
[0122] One configuration shown is a connection of the DC voltage bus 11 to the DC voltage bus 12 using a DC/DC converter 209.
[0123] One configuration shown is this DC/DC converter as a three pole 210. In this instance, it is possible to connect not only the DC voltage bus 12 and 11 but also a battery 211 and/or another DC voltage bus.
[0124] In another configuration, this three pole can also be embodied as a multi-pole.
[0125] The depiction according to FIG. 7 shows a fourth circuit diagram, wherein the propellers 108 have two respective motors connected to them via a shaft system 43 for driving. Here too, the feed is provided via the DC voltage bus 11, but via different sections 61 and 64 of this bus.
[0126] The depiction according to FIG. 8 shows a fifth circuit diagram, wherein, besides four power sources 21 to 24 with a diesel engine, alternative power sources are also shown. A wind turbine 25 can be one power source. A shore terminal 26 can be one power source, or else a photovoltaic installation 27.
[0127] The depiction according to FIG. 9 shows a generator system 10 having two generators 7 and 8, which are stiffly coupled via a shaft system 43. The generator 7 here has a low-voltage winding system and the generator 8 has a medium-voltage winding system. The generator 7 is used to feed a low-voltage DC bus 12 and the generator 8 is used to feed a medium-voltage DC bus 11.
[0128] The depiction according to FIG. 10 shows a multi-winding system generator 9 that has at least two winding systems, a first winding system for a medium voltage and a second winding system for a low voltage. The first winding system is used to feed the first DC bus 11 on the medium-voltage level (MV) via a first feeding electrical connection 51. The second winding system is used to feed the second DC bus 12 on the low-voltage level (LV) via another feeding electrical connection 53.
[0129] The depiction according to FIG. 11 schematically shows the possible arrangements of windings in the stator of a multi-winding system generator. In a first variant, sections of the LV windings can be in grooves 44 situated next to one another and sections of the MV windings can be in grooves 45 situated next to one another. In a second variant, the MV windings and the LV windings can be in common grooves 46. In a third variant, the MV windings and the LV windings can alternately be in grooves 24 and 48.
[0130] The depiction according to FIG. 12 shows an equivalent circuit diagram for a D-axis of a multi-winding system generator.
[0131] The depiction according to FIG. 13 shows an eighth circuit diagram for a power supply system 100, it being shown how the generator 6 can feed the first DC voltage bus 11 via two different sections 61 and 64 and how this generator 6 can also feed the second DC voltage bus 12 via, in that case too, two different sections.
[0132] The depiction according to FIG. 14 shows how a generator in a zone (generator 5 in zone 31 and generator 6 in zone 32) is able to feed in each case two sections 61 and 62 of the first DC voltage bus 11 in different zones 31 and 32 and how this also applies to the second DC voltage bus 12.
[0133] The depiction according to FIG. 15 is split into two partial FIGS. 15A and 15B. Both combine a power supply system 100 that comprises four diesel engines 1, 2, 3 and 4 as part of the power sources 21, 22, 23 and 24 and shows that the power supply system is able to be extended or changed almost arbitrarily in accordance with the demands on the water-bound facility. As a result of the water-bound facility being located on a ship or a drilling rig, for example, it is operated entirely or predominantly as an island system.
