Power system

Abstract

Disclosed is a power system. The power system according to one aspect of the present invention comprises: an equipment unit electrically connected to each of an external power source and a load; and a cooling fluid supply unit connected fluidly to the equipment unit and configured to provide a cooling fluid that cools the equipment unit, wherein the equipment unit may include a first equipment unit electrically connected to one among the power source and the load, and a second equipment unit electrically connected to the other among the power source and the load, and connected fluidly to the first equipment unit, and the cooling fluid supply unit may be connected fluidly to one among the first equipment unit and the second equipment unit, and the cooling fluid may be composed of an oil-based material.

Description

Power system

[0001] The present invention relates to a power system, and more specifically, to a power system capable of cooling components through which high voltage and low voltage are conducted together and preventing insulation breakdown.

[0002] A power system refers to any system that produces, transmits, distributes, and consumes electrical energy. With the advancement of technology, particularly the field of artificial intelligence which has recently been gaining prominence, the importance and demand for power systems are continuously increasing.

[0003] A transformer system can be cited as an example of a power system. A transformer system receives power of any voltage from an external power source and can step it up or down to a target voltage to deliver it to an external load.

[0004] That is, the transformer system may include at least two configurations in which different voltages are supplied.

[0005] Meanwhile, as the transformer system operates, heat is generated. If the generated heat is not properly cooled, there is a risk that other components of the transformer system may be damaged by the heat. Accordingly, various methods are being utilized to cool the transformer system.

[0006] One example is the air cooling method for each component of a transformer system. The air cooling method has the advantage of being structurally simple, as cooling can be performed by air without a separate fluid supply. On the other hand, the air cooling method also has limitations, as it is difficult to expect a high cooling effect due to the low thermal capacity of air.

[0007] Another example is the water cooling method for each component of a transformer system. Water cooling has the advantage of enhanced cooling performance due to the high thermal capacity of water. On the other hand, however, water cooling has the limitation that each component of the transformer system must be completely waterproofed to prevent safety accidents.

[0008] In addition, if the same water is supplied to both the high-voltage power supply and the low-voltage power supply, there is a risk of insulation breakdown occurring along the water flow path.

[0009] Accordingly, a method is required to effectively cool each component of the transformer system while preventing insulation breakdown.

[0010] Korean Published Patent Document No. 10-2024-0168254 discloses a battery pack. Specifically, it discloses a battery pack capable of accommodating electrodes of a busbar and a cell group within a receiving cavity, and accommodating insulating cooling oil within the receiving cavity.

[0011] However, the battery pack disclosed in the aforementioned prior art does not provide a method for simultaneously cooling components with high voltage differences. That is, the prior art is limited to providing only a method for cooling the busbars and electrodes provided in a single battery pack by immersing them in insulating cooling oil.

[0012] Korean Published Patent Document No. 10-2014-0066538 discloses a transformer with a direct oil cooling method. Specifically, it discloses a transformer with a direct oil cooling method that can prevent overheating of the transformer body by circulating a refrigerant having a simple cooling cycle.

[0013] However, the transformer with a direct oil cooling method disclosed in the aforementioned prior art is a method of cooling by immersing the transformer body itself in oil. That is, the aforementioned prior art does not provide a method for cooling each component by injecting oil into the first and second equipment sections equipped in the transformer.

[0014] Korean Published Patent Document No. 10-2024-0168254 (Nov. 29, 2024)

[0015] Korean Published Patent Document No. 10-2014-0066538 (June 2, 2014)

[0016] The present invention is intended to solve the above-mentioned problems, and the objective of the present invention is to provide a power system with a structure that can improve cooling efficiency.

[0017] Another objective of the present invention is to provide a power system with a structure in which each component can be cooled by coming into contact with a cooling fluid.

[0018] Another objective of the present invention is to provide a power system with a structure in which each component can be protected from damage by a cooling fluid.

[0019] Another objective of the present invention is to provide a power system with a structure in which each component can be insulated from a cooling fluid.

[0020] Another objective of the present invention is to provide a power system with a structure that minimizes the increase in cost resulting from the provision of a cooling configuration.

[0021] The problems of the present invention are not limited to those mentioned above, and other unmentioned problems will be clearly understood by a person skilled in the art to which the present invention pertains from the description below.

[0022] According to one aspect of the present invention, a power system is provided comprising: an equipment unit electrically connected to an external power source and a load, respectively; and a cooling fluid supply unit fluidically connected to the equipment unit and configured to provide a cooling fluid that cools the equipment unit, wherein the equipment unit comprises: a first equipment unit electrically connected to either one of the power source and the load; and a second equipment unit electrically connected to the other of the power source and the load and fluidly connected to the first equipment unit, wherein the cooling fluid supply unit fluidly connected to either one of the first equipment unit and the second equipment unit, and the cooling fluid is composed of an oil-based material.

[0023] At this time, a power system may be provided in which the cooling fluid is composed of a material having a lower density, specific heat, thermal conductivity, and electrical conductivity than water.

[0024] In addition, a power system may be provided in which the cooling fluid is composed of a material having a viscosity higher than water.

[0025] At this time, a power system may be provided in which the cooling fluid is one or more of mineral insulating oil, silicon insulating oil, and ester insulating oil.

[0026] Additionally, a power system may be provided, wherein the equipment unit is electrically connected to the first equipment unit and the second equipment unit, respectively, and includes a transformer unit that transforms power transmitted to either the first equipment unit or the second equipment unit and transmits it to the other of the first equipment unit and the second equipment unit.

[0027] At this time, a power system may be provided that includes a piping section fluidically connecting the equipment section and the cooling fluid supply section, and fluidly connecting the first equipment section and the second equipment section.

[0028] Additionally, a power system may be provided in which the piping section includes a transfer pipe that fluidically connects either of the first equipment section and the second equipment section with the cooling fluid supply section.

[0029] At this time, a power system may be provided in which the transfer pipes are provided in multiple quantities, wherein one of the multiple transfer pipes forms a transfer connection path through which the cooling fluid flows from the cooling fluid supply unit to the equipment unit, and another of the multiple transfer pipes forms a transfer outflow path through which the cooling fluid flows from the equipment unit to the cooling fluid supply unit.

[0030] Additionally, a power system may be provided in which the cooling fluid supply unit comprises a plurality of device pipes each connected to a plurality of the aforementioned transfer pipes to form an inlet path through which the cooling fluid is supplied to the equipment unit and an outlet path through which the cooling fluid is discharged from the equipment unit.

[0031] At this time, a power system may be provided in which the piping section includes a connecting pipe that fluidly connects the first equipment section and the second equipment section.

[0032] Additionally, a power system may be provided in which the above-mentioned connecting pipes are provided in multiple quantities, wherein one of the multiple connecting pipes forms a connecting inlet flow path through which the cooling fluid flows from either of the first equipment part and the second equipment part to the other, and another of the multiple connecting pipes forms a connecting outlet flow path through which the cooling fluid flows from either of the first equipment part and the second equipment part to the other.

[0033] According to the above configuration, the power system according to the embodiment of the present invention can have improved cooling efficiency.

[0034] In addition, according to the above configuration, each component of the power system according to the embodiment of the present invention can be cooled by coming into contact with a cooling fluid.

[0035] In addition, according to the above configuration, each component of the power system according to the embodiment of the present invention may not be damaged by the cooling fluid.

[0036] In addition, according to the above configuration, the power system according to the embodiment of the present invention may not have each component insulation broken down by the cooling fluid.

[0037] In addition, according to the above configuration, the power system according to the embodiment of the present invention may minimize the increase in cost resulting from the inclusion of a cooling configuration.

[0038] The effects of the present invention are not limited to the effects described above, and should be understood to include all effects that can be inferred from the configuration of the invention described in the detailed description or claims of the present invention.

[0039] FIG. 1 is a schematic diagram illustrating a power system according to an embodiment of the present invention.

[0040] FIG. 2 is a conceptual diagram illustrating the equipment and piping sections provided in the power system of FIG. 1.

[0041] Figure 3 is a conceptual diagram illustrating the flow path of a cooling fluid formed in the power system of Figure 1.

[0042] FIGS. 4 and 5 are conceptual diagrams illustrating the flow path of a cooling fluid formed in the equipment section and the piping section in the state of FIG. 3.

[0043] Figure 6 is a conceptual diagram illustrating the flow path of a cooling fluid formed in the power system of Figure 1.

[0044] FIGS. 7 and 8 are conceptual diagrams illustrating the flow path of a cooling fluid formed in the equipment section and the piping section in the state of FIG. 6.

[0045] Hereinafter, embodiments of the present invention are described in detail with reference to the attached drawings so that those skilled in the art can easily implement the present invention. The present invention may be embodied in various different forms and is not limited to the embodiments described herein. To clearly explain the present invention, parts unrelated to the description in the drawings have been omitted, and the same reference numerals have been used throughout the specification for identical or similar components.

[0046] The words and terms used in this specification and claims are not limited to their ordinary or dictionary meanings, but should be interpreted in a meaning and concept consistent with the technical spirit of the invention in accordance with the principles by which the inventor defines terms and concepts to best describe his invention.

[0047] Therefore, the embodiments described in this specification and the configurations illustrated in the drawings correspond to preferred embodiments of the present invention and do not represent all technical ideas of the present invention; thus, various equivalents and modifications that may replace such configurations may exist at the time of filing the present invention.

[0048] In the following description, descriptions of some components may be omitted to clarify the features of the present invention.

[0049]

[0050] In the following description, the term "connection" refers to one or more members being connected to each other in a manner that allows for fluid communication. In one embodiment, the connection may be formed by members such as a conduit, a pipe, or a piping system. In the following description, the term "connection" may be used interchangeably with the meaning that one or more members are "fluidly connected" to each other.

[0051] In the following description, the term "conduction" means that one or more components are connected to each other to transmit current or electrical signals. In one embodiment, the conduction may be formed in a wired form by a conductor member, etc., or in a wireless form such as Bluetooth, Wi-Fi, or RFID. In one embodiment, the conduction may include the meaning of "communication."

[0052] As used in the following description, the term "fluid" refers to any form of substance that flows due to an external force and whose shape or volume, etc., can be deformed. In one embodiment, the fluid may be a liquid such as water or a gas such as air.

[0053] As used in the following description, the term "cooling fluid" refers to any fluid capable of cooling by receiving heat of a different composition in one or more forms of conduction, convection, and radiation. In one embodiment, the cooling fluid may be provided as an oil-based electric insulating oil.

[0054] The terms "upper side," "lower side," "left side," "right side," "front side," and "rear side" used in the following description shall be understood by referring to the coordinate system depicted throughout the attached drawings.

[0055]

[0056] Referring to FIGS. 1 and 2, a power system (10) according to an embodiment of the present invention is illustrated as an example. The power system (10) according to the illustrated embodiment can be electrically connected to an external power source to receive power. Additionally, the power system (10) can be electrically connected to an external load to transmit the received power.

[0057] The power system (10) may be provided in any form capable of electrically connecting external power sources and loads. In one embodiment, the power system (10) may be provided as a transformer. In the above embodiment, the power system (10) may receive power of any voltage and may step up or step down the received power to transmit it externally.

[0058] The power system (10) may be configured to cool the components for performing the above process. The power system (10) may be configured to cool the components using a separate cooling fluid. In this case, the components of the power system (10) may be cooled by direct contact with the cooling fluid.

[0059] In this case, the cooling fluid can be configured to cool each component to which different voltages are applied. To this end, the cooling fluid may be provided as insulating oil to prevent current flow with each component. Therefore, the cooling fluid can come into contact with all of the above components to cool them, while preventing insulation breakdown caused by the voltage difference.

[0060] The cooling fluid may be formed from a material having low electrical conductivity and high specific heat. In one embodiment, the cooling fluid may be provided as mineral insulating oil, silicon insulating oil, or ester insulating oil.

[0061] In any case, it is sufficient to be able to sufficiently cool each component of the power system (10) while preventing random current flow.

[0062] In the above embodiment, the cooling fluid may have a density lower than that of water. Additionally, the cooling fluid may have a lower specific heat, higher viscosity, lower thermal conductivity, and lower electrical conductivity compared to water.

[0063] In the illustrated embodiment, the power system (10) includes a system body (100), a cooling fluid supply unit (200), an equipment unit (300), and a piping unit (400). Additionally, although not illustrated, the cooling fluid supply unit (200) may further be equipped with any device that provides a transfer force to the cooling fluid, such as a pump.

[0064] The system body (100) constitutes a part of the external form of the power system (10). A space is formed inside the system body (100) so that each component for performing the function of the power system (10) can be accommodated. In the illustrated embodiment, an equipment section (300) and a piping section (400) are accommodated inside the system body (100).

[0065] The system body (100) is fluidically connected to the cooling fluid supply unit (200). The cooling fluid contained in the cooling fluid supply unit (200) can be supplied to the interior of the system body (100).

[0066] The system body (100) is electrically connected to an external power source and a load, respectively. The equipment unit (300) housed inside the system body (100) can be electrically connected to an external power source and a load, respectively, through the system body (100). That is, the system body (100) is electrically connected to the equipment unit (300).

[0067] The system body (100) accommodates a piping section (400). The piping section (400) accommodated inside the system body (100) can be fluidly connected to a cooling fluid supply section (200) that is fluidly connected to the system body (100). The piping section (400) receives cooling fluid provided by the cooling fluid supply section (200) and can deliver it back to the cooling fluid supply section (200).

[0068] The system body (100) is fluidically connected to the cooling fluid supply unit (200) to receive cooling fluid, and can be provided in any shape capable of accommodating the equipment unit (300) and the piping unit (400). In the illustrated embodiment, the system body (100) has a rectangular shape.

[0069] The system body (100) may be formed of an electrically insulating material. This is to prevent unauthorized electrical current from flowing between the equipment part (300) housed inside the system body (100) and the outside. In one embodiment, the system body (100) may be formed of a material such as a continuous fiber reinforced composite material including polypropylene (PP), glass fiber reinforced plastic (GFRP), or polycarbonate (PC).

[0070] The cooling fluid supply unit (200) is fluidically connected to the system body (100) to provide cooling fluid. The cooling fluid provided by the cooling fluid supply unit (200) can cool the equipment unit (300) through the piping unit (400) housed inside the system body (100). Additionally, the cooling fluid that has cooled the equipment unit (300) can be supplied back to the cooling fluid supply unit (200) through the equipment unit (300).

[0071] The cooling fluid supply unit (200) may be provided separately from the system body (100). Therefore, even if the cooling fluid supply unit (200) is provided, relocation of the system body (100) and the equipment unit (300) housed in the system body (100) is not required.

[0072] In the illustrated embodiment, the cooling fluid supply unit (200) includes a cooling fluid supply device (210), a first device pipe (220), and a second device pipe (230). Additionally, as described above, although not illustrated, the cooling fluid supply unit (200) may be configured to further include a separate device, such as a pump, for providing a transfer force to the cooling fluid.

[0073] The cooling fluid supply device (210) receives a cooling fluid. The cooling fluid supply device (210) can receive and store a cooling fluid from the outside. To this end, a predetermined space may be formed inside the cooling fluid supply device (210).

[0074] The cooling fluid supply device (210) is fluidically connected to the piping section (400) through the first device pipe (220) and the second device pipe (230). The cooling fluid contained within the cooling fluid supply device (210) can be supplied to the piping section (400) through either the first device pipe (220) or the second device pipe (230). Additionally, the cooling fluid supplied to the piping section (400) can be returned to the cooling fluid supply device (210) through the other of the first device pipe (220) and the second device pipe (230).

[0075] The cooling fluid supply device (210) may be of any shape that can partially form a flow path for the cooling fluid by being fluidly connected to the piping section (400) through the first device pipe (220) and the second device pipe (230). In the illustrated embodiment, the cooling fluid supply device (210) is a three-dimensional shape in the form of a rectangular parallelepiped similar to the system body (100).

[0076] The first device piping (220) is a configuration in which the cooling fluid supply unit (200) is fluidically connected to the piping unit (400). The first device piping (220) is fluidly connected to the cooling fluid supply unit (210) and the transfer piping (410) of the piping unit (400), respectively. The first device piping (220) together with the transfer piping (410) constitutes a part of the flow path of the cooling fluid. In the illustrated embodiment, the first device piping (220) is combined with the first transfer piping (411) and fluidly connected.

[0077] The first device piping (220) may be provided in any form capable of fluidically connecting the cooling fluid supply device (210) and the transfer piping (410). In the illustrated embodiment, the first device piping (220) is provided in the form of a pipe or a tube.

[0078] The first device pipe (220) may be positioned at any location where it can fluidically connect the cooling fluid supply device (210) and the transfer pipe (410). In the illustrated embodiment, the first device pipe (220) is positioned adjacent to the upper end of the cooling fluid supply device (210) and spaced apart from the second device pipe (230). The first device pipe (220) may form a flow path for the cooling fluid separately from the second device pipe (230).

[0079] The second device piping (230) is another configuration in which the cooling fluid supply unit (200) is fluidically connected to the piping unit (400). The second device piping (230) is fluidly connected to the cooling fluid supply unit (210) and the transfer piping (410) of the piping unit (400), respectively. The second device piping (230) together with the transfer piping (410) constitutes another part of the flow path of the cooling fluid. In the illustrated embodiment, the second device piping (230) is combined with the second transfer piping (412) and fluidly connected.

[0080] The second device piping (230) may be provided in any form capable of fluidically connecting the cooling fluid supply device (210) and the transfer piping (410). In the illustrated embodiment, the second device piping (230) is provided in the form of a pipe or a tube.

[0081] The second device pipe (230) may be positioned at any location where it can fluidically connect the cooling fluid supply device (210) and the transfer pipe (410). In the illustrated embodiment, the second device pipe (230) is positioned adjacent to the lower end of the cooling fluid supply device (210) and spaced apart from the first device pipe (220). The second device pipe (230) may form a flow path for the cooling fluid separately from the first device pipe (220).

[0082] The equipment unit (300) effectively performs the role of the power system (10). The equipment unit (300) is electrically connected to an external power source and load to receive or transmit power. In an embodiment where the power system (10) is equipped with a transformer, the equipment unit (300) may be configured to include a configuration for processing high-voltage power and a configuration for processing low-voltage power, respectively.

[0083] The equipment unit (300) is coupled with the system body (100). The equipment unit (300) is accommodated in a space formed inside the system body (100). The equipment unit (300) is electrically connected to the system body (100) and can be electrically connected to an external power source and load. That is, the equipment unit (300) is electrically connected to an external power source and load through the system body (100).

[0084] The equipment section (300) is combined with the piping section (400). The equipment section (300) is fluidically connected to the piping section (400) to receive cooling fluid. The configuration of the equipment section (300) can be cooled by heat exchange with the cooling fluid introduced through the piping section (400).

[0085] In the illustrated embodiment, the equipment unit (300) includes a first equipment unit (310), a second equipment unit (320), and a transformer unit (330).

[0086] The first equipment unit (310) constitutes a part of the equipment unit (300). The first equipment unit (310) may be electrically connected to either an external power source or a load. The first equipment unit (310) may receive power from an external power source or provide power to an external load.

[0087] The first equipment unit (310) is located adjacent to the second equipment unit (320). When the first equipment unit (310) is connected to an external power source, the first equipment unit (310) can transmit power provided through the transformer unit (330) to the second equipment unit (320). When the first equipment unit (310) is connected to an external load, the first equipment unit (310) can receive power provided to the second equipment unit (320) through the transformer unit (330).

[0088] The following description assumes that the first equipment unit (310) is electrically connected to an external power source to receive high-voltage power. In the above embodiment, it will be understood that the high-voltage power provided to the first equipment unit (310) is converted into low-voltage power by the transformer unit (330) and induced to the second equipment unit (320).

[0089] In the illustrated embodiment, the first equipment part (310) includes a first housing (311) and a first device (312).

[0090] The first housing (311) forms the outer shape of the first equipment unit (310). A space is formed inside the first housing (311) to accommodate the first device (312). The first device (312) can be electrically connected to an external power source through the system body (100) while being accommodated in the space of the first housing (311).

[0091] The first housing (311) is coupled with the piping section (400). Specifically, the first housing (311) can be coupled with the transfer pipe (410) or the connecting pipe (420) to receive a cooling fluid.

[0092] The provided cooling fluid can be discharged after cooling the first device (312) housed in the first housing (311). The first housing (311) is fluidically connected to the cooling fluid supply unit (200) through the piping unit (400). In the illustrated embodiment, the first housing (311) is fluidly connected by being coupled with the connecting pipe (420).

[0093] The first housing (311) can be provided in any shape that accommodates the first device (312) and is coupled with the piping section (400) to receive cooling fluid. In the illustrated embodiment, the first housing (311) has a rectangular shape similar to the system body (100) or the cooling fluid supply device (210).

[0094] The first device (312) is electrically connected to an external power source to receive high-voltage power. The power received by the first device (312) can be stepped down by the transformer (330) and delivered to the second device (322).

[0095] The first device (312) is housed in the first housing (311). The first device (312) can be electrically connected to an external power source while housed in the first housing (311). Additionally, the first device (312) can be cooled by heat exchange with a cooling fluid introduced through the connecting pipe (420).

[0096] The first device (312) is coupled with the transformer (330). The first device (312) is electrically connected to the transformer (330) and can transmit high-voltage power.

[0097] The second equipment unit (320) constitutes another part of the equipment unit (300). The second equipment unit (320) may be electrically connected to one of the external power sources and loads. The second equipment unit (320) may receive power from the external power source or provide power to the external load.

[0098] The second equipment unit (320) is located adjacent to the first equipment unit (310). When the second equipment unit (320) is connected to an external power source, the second equipment unit (320) can transmit power provided through the transformer unit (330) to the first equipment unit (310). When the second equipment unit (320) is connected to an external load, the second equipment unit (320) can receive power provided to the first equipment unit (310) through the transformer unit (330).

[0099] The following description is based on the premise that the second equipment unit (320) is electrically connected to an external load to transmit low-voltage power. In the above embodiment, it will be understood that the low-voltage power provided by the second equipment unit (320) to the external load is the power provided from the first equipment unit (310) through the transformer unit (330).

[0100] In the illustrated embodiment, the second equipment unit (320) includes a second housing (321) and a second device (322).

[0101] The second housing (321) forms the outer shape of the second equipment unit (320). A space is formed inside the second housing (321) to accommodate the second device (322). The second device (322) can be electrically connected to an external load through the system body (100) while being accommodated in the space of the second housing (321).

[0102] The second housing (321) is coupled with the piping section (400). Specifically, the second housing (321) can be coupled with the transfer pipe (410) or the connecting pipe (420) to receive cooling fluid.

[0103] The provided cooling fluid can be discharged again after cooling the second device (322) housed in the second housing (321). The second housing (321) is fluidically connected to the cooling fluid supply unit (200) through the piping unit (400). In the illustrated embodiment, the second housing (321) is fluidly connected by being coupled to the transfer piping (410).

[0104] Additionally, the second housing (321) is coupled to the connecting pipe (420) and fluidly connected. The cooling fluid provided to the second housing (321) can be transferred to the first housing (311) through the connecting pipe (420).

[0105] The second housing (321) accommodates the second device (322) and may be provided in any shape that is coupled with the piping section (400) to allow cooling fluid to flow in and out. In the illustrated embodiment, the second housing (321) has a rectangular shape similar to the system body (100) or the cooling fluid supply device (210).

[0106] The second device (322) is electrically connected to an external load to transmit low-voltage power. The second device (322) receives stepped-down power through the transformer (330) and can transmit it to the external load.

[0107] The second device (322) is housed in the second housing (321). The second device (322) can be electrically connected to an external load while housed in the second housing (321). Additionally, the second device (322) can be cooled by heat exchange with a cooling fluid introduced through the transfer pipe (410). At this time, the cooling fluid that cooled the second device (322) can be discharged to the first housing (311) through the connecting pipe (420).

[0108] The second device (322) is coupled with the transformer (330). The second device (322) is electrically connected to the transformer (330) so that it can receive low-voltage power.

[0109] In the illustrated embodiment, the second equipment unit (320) is located between the first equipment unit (310) and the cooling fluid supply unit (200), so that the cooling fluid is supplied to the first equipment unit (310) through the second equipment unit (320). Alternatively, it will be understood that the first equipment unit (310) may be located between the second equipment unit (320) and the cooling fluid supply unit (200), so that the cooling fluid is supplied to the second equipment unit (320) through the first equipment unit (310).

[0110] The transformer unit (330) is configured to increase or decrease the voltage of the power delivered to either the first equipment unit (310) or the second equipment unit (320). The transformer unit (330) is located between the first equipment unit (310) and the second equipment unit (320). The transformer unit (330) is electrically connected to the first housing (311) and the second housing (321), respectively.

[0111] The transformer (330) may be provided in any form capable of stepping up or stepping down the voltage of the power. In the illustrated embodiment, the transformer (330) may be configured to step up or step down the voltage of the power using electromagnetic induction.

[0112] The process of the transformer (330) stepping up or stepping down the voltage of the power is a well-known technique, so a detailed explanation will be omitted.

[0113] The piping section (400) fluidically connects the equipment section (300) housed in the system body (100) to the cooling fluid supply section (200). The cooling fluid housed in the cooling fluid supply section (200) can be supplied to the equipment section (300) through the piping section (400). The piping section (400) is fluidly connected to the cooling fluid supply section (200) and the equipment section (300), respectively.

[0114] Additionally, the piping section (400) fluidly connects each component of the equipment section (300) housed in the system body (100), namely the first equipment section (310) and the second equipment section (320). Cooling fluid supplied from the cooling fluid supply section (200) to either the first equipment section (310) or the second equipment section (320) can be supplied to the other through the piping section (400). The piping section (400) is fluidly connected to the first equipment section (310) and the second equipment section (320), respectively.

[0115] That is, the piping section (400) forms a flow path for the cooling fluid together with the cooling fluid supply section (200).

[0116] The piping section (400) may be provided in any form capable of forming a flow path for the cooling fluid. In one embodiment, the piping section (400) may be provided in the form of a pipe or a tube.

[0117] In the illustrated embodiment, the piping section (400) includes a transfer pipe (410) and a connecting pipe (420).

[0118] The transfer pipe (410) constitutes a part of the piping section (400). The transfer pipe (410) is connected to the equipment section (300) and the cooling fluid supply section (200), respectively, to fluidly connect them. Specifically, the transfer pipe (410) is connected to the first device pipe (220) and the second device pipe (230), respectively, to fluidly connect them.

[0119] Additionally, the transfer pipe (410) may be coupled to either the first housing (311) or the second housing (321) and fluidly connected. In the illustrated embodiment, the transfer pipe (410) is coupled to and connected to the second housing (321).

[0120] Accordingly, the transfer pipe (410) can be said to comprise a transfer inlet path (TI) through which the cooling fluid contained in the cooling fluid supply device (210) is supplied to the equipment section (300), and a transfer outlet path (TO) through which the cooling fluid heat-exchanged in the equipment section (300) is returned to the cooling fluid supply device (210).

[0121] Multiple transfer pipes (410) may be provided. Multiple transfer pipes (410) may be connected to and communicate with the first device pipe (220), the second device pipe (230), and the second housing (321), respectively. In the illustrated embodiment, the transfer pipe (410) includes the first transfer pipe (411) and the second transfer pipe (412).

[0122] The first transfer pipe (411) is connected to the first device pipe (220) and the second housing (321). The first transfer pipe (411) can form either a transfer inlet path (TI) or a transfer outlet path (TO).

[0123] As described below, when the first device pipe (220) forms an inflow path (I), the first transfer pipe (411) can form a transfer inflow path (TI). Additionally, when the first device pipe (220) forms an outflow path (O), the first transfer pipe (411) can form a transfer outflow path (TO).

[0124] The second transfer pipe (412) is connected to the second device pipe (230) and the second housing (321). The second transfer pipe (412) can form either a transfer inlet path (TI) or a transfer outlet path (TO).

[0125] As described below, when the second device pipe (230) forms an inflow path (I), the second transfer pipe (412) can form a transfer inflow path (TI). Additionally, when the second device pipe (230) forms an outflow path (O), the second transfer pipe (412) can form a transfer outflow path (TO).

[0126] The connecting pipe (420) constitutes another part of the piping section (400). The connecting pipe (420) is coupled to the first housing (311) and the second housing (321), respectively, to fluidly connect them. The connecting pipe (420) forms a flow path for cooling fluid introduced into either the first housing (311) or the second housing (321) to flow out to the other.

[0127] Accordingly, the connecting pipe (420) can be said to form a connecting inlet path (CI) in which a cooling fluid that has cooled either the first housing (311) or the second housing (321) is transferred to the other of the first housing (311) and the second housing (321).

[0128] Additionally, the connecting pipe (420) may be said to constitute a connecting outflow path (CO) through which a cooling fluid that has cooled the other of the first device (312) and the second device (322) flows out to either of the first housing (311) and the second housing (321).

[0129] The connecting pipe (420) may be formed of an electrically insulating material. This is to prevent any electrical current from flowing between the first equipment part (310), the second equipment part (320), and the cooling fluid passing through them. In one embodiment, the connecting pipe (420) may be formed of epoxy resin, polyimide resin, fiber reinforced plastic (FRP), or ceramic material.

[0130] In the above embodiment, any energization of the connecting pipe (420) with the cooling fluid passing through either the first equipment part (310) or the second equipment part (320) can be prevented. As a result, insulation breakdown of the first equipment part (310), the second equipment part (320) through which the cooling fluid flows, and the connecting pipe (420) connecting them can be prevented.

[0131] A plurality of connecting pipes (420) may be provided. A plurality of connecting pipes (420) may be connected to and communicate with the first housing (311) and the second housing (321), respectively. In the illustrated embodiment, the connecting pipe (420) includes a first connecting pipe (421) and a second connecting pipe (422).

[0132] The first connecting pipe (421) is connected to and communicates with the first housing (311) and the second housing (321), respectively. The first connecting pipe (421) can form either a connecting inlet path (CI) or a connecting outlet path (CO).

[0133] The first connecting pipe (421) is positioned spaced apart from the second connecting pipe (422). In the illustrated embodiment, the first connecting pipe (421) is positioned adjacent to the upper portions of the first housing (311) and the second housing (321), corresponding to the positions of the first device pipe (220) and the first transfer pipe (411).

[0134] The second connecting pipe (422) is connected to and communicates with the first housing (311) and the second housing (321), respectively. The second connecting pipe (422) can form one of the connecting inlet path (CI) and the connecting outlet path (CO).

[0135] The second connecting pipe (422) is positioned spaced apart from the first connecting pipe (421). In the illustrated embodiment, the second connecting pipe (422) is positioned adjacent to the lower portions of the first housing (311) and the second housing (321), corresponding to the positions of the second device pipe (230) and the second transfer pipe (412).

[0136] As described below, the cooling fluid contained in the cooling fluid supply device (210) can be introduced into the first equipment part (310) through either the first device pipe (220) or the second device pipe (230).

[0137] The cooling fluid that flows inside the first equipment section (310) and cools the first device (312) can be introduced into the second equipment section (320) through one of the plurality of connecting pipes (420). The cooling fluid that flows inside the second equipment section (320) and cools the second device (322) can be introduced into the first equipment section (310) through the other of the plurality of connecting pipes (420).

[0138] The cooling fluid introduced into the first equipment unit (310) (i.e., the cooling fluid that cools the first device (312) and the second device (322)) can be discharged to the cooling fluid supply device (210) through the other of the first device pipe (220) and the second device pipe (230).

[0139] The above process is repeated so that the cooling fluid can circulate through the cooling fluid supply unit (200) and the equipment unit (300).

[0140]

[0141] Referring to FIGS. 3 to 8, various flow paths of the cooling fluid formed in the power system (10) of the present invention are illustrated as examples. As described above, the cooling fluid contained in the cooling fluid supply unit (200) can be delivered to the equipment unit (300) through the piping unit (400) to cool the first device (312) and the second device (322), and then flow back into the cooling fluid supply unit (200).

[0142] Referring to FIGS. 3 to 5, an embodiment is illustrated in which a cooling fluid contained in a cooling fluid supply device (210) is supplied to an equipment unit (300) through a first device pipe (220). In the illustrated embodiment, the first device pipe (220) forms an inlet path (I) through which the cooling fluid is supplied to the equipment unit (300).

[0143] The cooling fluid can be introduced into the interior of the second housing (321) through a first transfer pipe (411) fluidically connected to the first device pipe (220). At this time, the first transfer pipe (411) forms a transfer inlet path (TI) through which the cooling fluid is supplied from the cooling fluid supply unit (200).

[0144] Additionally, the second transfer pipe (412) forms a transfer outflow path (TO) through which the cooling fluid flowing from the first housing (311) to the second housing (321) returns to the cooling fluid supply unit (200).

[0145] The incoming cooling fluid flows in the second housing (321) and, after cooling the second device (322), can be discharged to the first housing (311) through either the first connecting pipe (421) or the second connecting pipe (422).

[0146] That is, in the embodiment illustrated in FIG. 4, the cooling fluid introduced into the second housing (321) can be discharged into the first housing (311) through the first connecting pipe (421) to cool the first device (312). In the above embodiment, the first connecting pipe (421) can form a connecting inlet path (CI) through which the cooling fluid is introduced into the first housing (311).

[0147] Additionally, the cooling fluid introduced into the first housing (311) can be discharged to the second housing (321) through the second connecting pipe (422) after cooling the first device (312). In the above embodiment, the second connecting pipe (422) can form a connecting discharge path (CO) through which the cooling fluid is discharged from the first housing (311).

[0148] Additionally, in the embodiment illustrated in FIG. 5, the cooling fluid introduced into the second housing (321) may flow out to the first housing (311) through the second connecting pipe (422) to cool the first device (312). In the above embodiment, the second connecting pipe (422) may form a connecting inlet path (CI) through which the cooling fluid is introduced into the first housing (311).

[0149] Additionally, the cooling fluid introduced into the first housing (311) can be discharged to the second housing (321) through the first connecting pipe (421) after cooling the first device (312). In the above embodiment, the first connecting pipe (421) can form a connecting discharge path (CO) through which the cooling fluid is discharged from the first housing (311).

[0150] The cooling fluid discharged into the second housing (321) can be discharged to the cooling fluid supply device (210) through the second transfer pipe (412) and the second device pipe (230) fluidically connected to the second transfer pipe (412) after cooling the second device (322) again.

[0151] Referring to FIGS. 6 through 8, an embodiment is illustrated in which a cooling fluid contained in a cooling fluid supply device (210) is supplied to an equipment unit (300) through a second device pipe (230). In the illustrated embodiment, the second device pipe (230) forms an inlet path (I) through which the cooling fluid is supplied to the equipment unit (300).

[0152] The cooling fluid can be introduced into the interior of the second housing (321) through a second transfer pipe (412) fluidically connected to the second device pipe (230). At this time, the second transfer pipe (412) forms a transfer inlet path (TI) through which the cooling fluid is supplied from the cooling fluid supply unit (200).

[0153] Additionally, the first transfer pipe (411) forms a transfer outflow path (TO) through which the cooling fluid flowing from the first housing (311) to the second housing (321) returns to the cooling fluid supply unit (200).

[0154] The incoming cooling fluid flows in the second housing (321) and, after cooling the second device (322), can be discharged to the first housing (311) through either the first connecting pipe (421) or the second connecting pipe (422).

[0155] That is, in the embodiment illustrated in FIG. 7, the cooling fluid introduced into the second housing (321) can be discharged into the first housing (311) through the first connecting pipe (421) to cool the first device (312). In the above embodiment, the first connecting pipe (421) can form a connecting inlet path (CI) through which the cooling fluid is introduced into the first housing (311).

[0156] Additionally, the cooling fluid introduced into the first housing (311) can be discharged to the second housing (321) through the second connecting pipe (422) after cooling the first device (312). In the above embodiment, the second connecting pipe (422) can form a connecting discharge path (CO) through which the cooling fluid is discharged from the first housing (311).

[0157] Additionally, in the embodiment illustrated in FIG. 8, the cooling fluid introduced into the second housing (321) may flow out to the first housing (311) through the second connecting pipe (422) to cool the first device (312). In the above embodiment, the second connecting pipe (422) may form a connecting inlet path (CI) through which the cooling fluid is introduced into the first housing (311).

[0158] Additionally, the cooling fluid introduced into the first housing (311) can be discharged to the second housing (321) through the first connecting pipe (421) after cooling the first device (312). In the above embodiment, the first connecting pipe (421) can form a connecting discharge path (CO) through which the cooling fluid is discharged from the first housing (311).

[0159] The cooling fluid that has flowed out to the second housing (321) can be discharged to the cooling fluid supply device (210) through the first transfer pipe (411) and the first device pipe (220) fluidically connected to the first transfer pipe (411) after cooling the second device (322) again.

[0160] In the power system (10) according to the embodiment of the present invention described above, since the cooling fluid is in direct contact with each component of the equipment unit (300) to exchange heat, the cooling effect of each component of the equipment unit (300) can be effectively improved. In addition, since electrical insulating oil is used as the cooling fluid, insulation breakdown due to voltage difference can be prevented even when the power system (10) is equipped with a transformer.

[0161]

[0162] Although embodiments of the present invention have been described, the spirit of the present invention is not limited to the embodiments presented in this specification. Those skilled in the art who understand the spirit of the present invention may easily propose other embodiments within the scope of the same spirit by adding, changing, deleting, or adding components, and such embodiments shall also be considered to fall within the scope of the spirit of the present invention.

[0163] 10: Power System 100: System Main Body

[0164] 200: Cooling fluid supply unit 210: Cooling fluid supply device

[0165] 220: 1st device piping 230: 2nd device piping

[0166] 300: Equipment Department 310: 1st Equipment Department

[0167] 311: First housing 312: First device

[0168] 320: 2nd Equipment Unit 321: 2nd Housing

[0169] 322: Second device 330: Transformer

[0170] 400: Piping section 410: Transfer piping

[0171] 411: 1st transfer pipe 412: 2nd transfer pipe

[0172] 420: Connecting pipe 421: First connecting pipe

[0173] 422: Second connecting pipe I: Inflow path

[0174] O: Leakage Euro TI: Forward Connection Euro

[0175] TO: Forward outflow Euros CI: Connection inflow Euros

[0176] CO: Connection leak Euro

Claims

1. Equipment parts electrically connected to external power sources and loads, respectively; and It includes a cooling fluid supply unit that is fluidically connected to the above equipment unit and configured to provide a cooling fluid that cools the above equipment unit, and The above equipment unit is, A first equipment unit electrically connected to either of the above power source and the above load; and It includes a second equipment part that is electrically connected to the other of the power source and the load and fluidly connected to the first equipment part, The above cooling fluid supply unit is fluidically connected to either the first equipment unit or the second equipment unit, and The above cooling fluid is composed of an oil-based material, Power system.

2. In Paragraph 1, The above cooling fluid is composed of a material having lower density, specific heat, thermal conductivity, and electrical conductivity than water. Power system.

3. In Paragraph 1, The above cooling fluid is composed of a substance with a viscosity higher than water, Power system.

4. In Paragraph 1, The above cooling fluid is, Provided with one or more of mineral insulating oil, silicon insulating oil, and ester insulating oil, Power system.

5. In Paragraph 1, The above equipment unit is, A transformer unit electrically connected to the first equipment unit and the second equipment unit, respectively, and comprising a transformer unit that transforms power transmitted to either the first equipment unit or the second equipment unit and transmits it to the other of the first equipment unit and the second equipment unit. Power system.

6. In Paragraph 1, Fluidically connecting the above equipment unit and the cooling fluid supply unit, and including a piping unit fluidly connecting the first equipment unit and the second equipment unit, Power system.

7. In Paragraph 6, The above piping section is, A transfer pipe comprising fluidically connecting either one of the first equipment unit and the second equipment unit with the cooling fluid supply unit, Power system.

8. In Paragraph 7, The above-mentioned transfer pipe is provided in multiple quantities, One of the plurality of the above-mentioned transfer pipes forms a transfer connection path through which the cooling fluid flows from the cooling fluid supply section to the equipment section, and Another of the plurality of the above-mentioned transfer pipes constitutes a transfer outflow path through which the cooling fluid flows from the equipment section to the cooling fluid supply section, Power system.

9. In Paragraph 8, The above cooling fluid supply unit is, A plurality of device pipes each connected to the plurality of the above-mentioned transfer pipes to form an inlet path through which the cooling fluid is supplied to the equipment section and an outlet path through which the cooling fluid is discharged from the equipment section, comprising Power system.

10. In Paragraph 6, The above piping section is, A connecting pipe comprising fluidically connecting the first equipment unit and the second equipment unit, Power system.

11. In Paragraph 10, The above connecting pipes are provided in multiple numbers, One of the plurality of the above connecting pipes forms a connecting inlet path through which the cooling fluid flows from either of the first equipment part and the second equipment part to the other, and Another of the plurality of the above connecting pipes constitutes a connecting outflow path through which the cooling fluid flows from the other one of the first equipment part and the second equipment part to the other one, Power system.

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