Power transformation system

Abstract

The utility model discloses a power transformation system, and relates to the technical field of power equipment, the power transformation system comprises a box body, an on-load voltage regulation and capacitance regulation transformer, a circuit breaker and a low-voltage switch cabinet, the box body is internally provided with a separator plate, and the separator plate is used for dividing the space in the box body into a first chamber and a second chamber; the first cavities and the second cavities are arranged at intervals in the horizontal direction; the on-load voltage-regulating and capacitance-regulating transformer is arranged in the first cavity; the circuit breaker is arranged at the top of the on-load voltage-regulating and capacitance-regulating transformer; the low-voltage switch cabinet is arranged in the second chamber; the on-load voltage-regulating and capacitance-regulating transformer regulates voltage and rated capacity so as to effectively adapt to electricity demands of different capacities, and the circuit breaker is arranged at the top of the on-load voltage-regulating and capacitance-regulating transformer, so that the occupied area of the power transformation system is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of power equipment, and particularly relates to a substation system. Background Art

[0002] With the frequent changes in load during construction project power consumption, oil drilling, exploitation, fracturing, equipment maintenance, and disaster emergency power supply, new requirements are put forward for the energy conservation, emission reduction, and green environmental protection of power equipment. When the old mobile substation is used for project power consumption or well site power consumption, if the capacity is selected too large, it will be like using a big horse to pull a small cart, resulting in a decline in economic efficiency and waste of energy; if the capacity is selected too small, it will be like using a small horse to pull a big cart, resulting in a decline in power supply reliability. Therefore, in order to ensure power supply reliability, large-capacity substation equipment is generally selected for the old substations.

[0003] Moreover, the old mobile substation is provided with a transformer chamber for accommodating a transformer, a switchgear chamber for accommodating a disconnector, a vacuum circuit breaker, and an earthing knife switch, a low-voltage incoming line cabinet connected to the transformer, a feeder cabinet, and an outgoing line cabinet, resulting in a large floor area of the existing old mobile substation. Summary of the Utility Model

[0004] The main object of the utility model is to propose a substation system, aiming to solve the problems of how to balance power supply reliability and reduce energy consumption, as well as the problem of the large floor area of the existing substation.

[0005] To achieve the above object, the substation system proposed by the utility model includes:

[0006] A box body, with a partition inside the box body, and the partition is used to divide the space inside the box body into a first chamber and a second chamber, and the first chamber and the second chamber are arranged at intervals in the horizontal direction;

[0007] A on-load tap-changing and capacity-adjustable transformer, which is arranged in the first chamber;

[0008] A circuit breaker, which is arranged on the top of the on-load tap-changing and capacity-adjustable transformer;

[0009] A low-voltage switchgear, which is arranged in the second chamber.

[0010] In an embodiment, the substation system further includes a control panel, which is arranged on the outer wall of the box body, and both the on-load tap-changing and capacity-adjustable transformer and the circuit breaker are electrically connected to the control panel.

[0011] In one embodiment, the control panel includes a transformer temperature display, a transformer control device, and a circuit breaker control device. The circuit breaker control device is electrically connected to the circuit breaker, and the transformer control device is electrically connected to the on-load voltage regulating and capacity regulating transformer.

[0012] In one embodiment, the control panel includes an overall machine controller. The on-load voltage regulating and capacity regulating transformer and the circuit breaker are both electrically connected to the overall machine controller, so that the overall machine controller can obtain the operation data of the on-load voltage regulating and capacity regulating transformer and adjust the gear of the on-load voltage regulating and capacity regulating transformer. The overall machine controller is used for communicating with a communication management machine.

[0013] In one embodiment, the circuit breaker includes an integrated V-type circuit breaker, and the integrated V-type circuit breaker includes a disconnector, a vacuum circuit breaker, and an earthing knife.

[0014] In one embodiment, the box body includes a box main body and a skid-mounted base. The box main body is fixed to the skid-mounted base, and the low-voltage switch cabinet is arranged on the skid-mounted base.

[0015] In one embodiment, through holes for cables to pass through are formed in the side wall of the box body.

[0016] In one embodiment, the substation system further includes a fence. The fence is arranged in the first chamber and surrounds the periphery of the on-load voltage regulating and capacity regulating transformer.

[0017] In one embodiment, the low-voltage switch cabinet includes a cabinet main body, and a power supply incoming line frame circuit breaker, a power supply outgoing line frame circuit breaker, a molded case switch, a aviation plug socket, and a passive filter module arranged on the cabinet main body.

[0018] In one embodiment, the length of the box body is not greater than 4000 mm, the width of the box body is not greater than 2500 mm, the height of the box body is not greater than 2800 mm, and the weight of the substation system is not greater than 9.5 T.

[0019] The technical solution of the present utility model adjusts the voltage and rated capacity through a on-load voltage regulating and capacity regulating transformer, thereby effectively adapting to the power consumption requirements of different capacities, avoiding the energy loss caused by using large-capacity power transformation equipment when the capacity demand is small, and also avoiding the problem of reduced stability caused by using small-capacity power transformation equipment when the capacity demand is large; the circuit breaker is arranged on the top of the on-load voltage regulating and capacity regulating transformer, and the circuit breaker and the on-load voltage regulating and capacity regulating transformer are arranged in the first chamber. Through this vertical arrangement form, the chamber for accommodating the circuit breaker is omitted, reducing the floor area of the power transformation system, thereby improving the integration degree of the power transformation system. And because the circuit breaker is arranged on the top of the on-load voltage regulating and capacity regulating transformer instead of being suspended above the on-load voltage regulating and capacity regulating transformer, the stability of the circuit breaker is effectively improved; by integrating the power supply incoming frame circuit breaker, the power supply outgoing frame circuit breaker, the molded case switch, the aviation plug socket and the active power filter module on the cabinet body, the integration degree of the power transformation system is effectively improved, and by replacing the traditional low-voltage incoming cabinet, feeder cabinet and outgoing cabinet with a low-voltage switch cabinet, the floor area of the power transformation system is effectively reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on the structures shown in these drawings without creative efforts.

[0021] Figure 1 It is a front view structural schematic diagram of the interior of the power transformation system provided by the present utility model;

[0022] Figure 2 It is a top view structural schematic diagram of the interior of the power transformation system provided by the present utility model;

[0023] Figure 3 It is a right view structural schematic diagram of the interior of the power transformation system provided by the present utility model;

[0024] Figure 4 It is a structural schematic diagram of the power transformation system provided by the present utility model.

[0025] Explanation of the reference numerals in the drawings:

[0026] 100, power transformation system; 1, box body; 11, box body; 111, through hole; 12, skid-mounted base; 13, partition board; 141, first chamber; 142, second chamber; 2, on-load voltage regulating and capacity regulating transformer; 3, circuit breaker; 4, low-voltage switch cabinet; 5, control panel; 6, fence.

[0027] The realization, functional features, and advantages of the present utility model will be further described in conjunction with embodiments with reference to the accompanying drawings. Detailed implementation manners

[0028] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model.

[0029] It should be noted that if there are directional indications (such as up, down, left, right, front, back,...) involved in the embodiments of the present utility model, the directional indications are only used to explain the relative positional relationship and movement conditions between components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0030] In addition, if there are descriptions such as "first", "second", etc. involved in the embodiments of the present utility model, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, if "and / or" or "and / or" appears throughout the text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or a solution that satisfies both A and B at the same time. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0031] With the electricity consumption in construction projects, oil drilling, exploitation, fracturing, equipment maintenance, and disaster emergency power supply, the load changes frequently, which puts forward new requirements for the energy conservation, emission reduction, and environmental protection of power equipment. When the old-fashioned mobile substation is used for project electricity consumption and wellsite electricity consumption, if the capacity is selected too large, it will be like using a big horse to pull a small cart, resulting in a decline in economic efficiency and waste of energy; if the capacity is selected too small, it will be like using a small horse to pull a big cart, resulting in a decline in power supply reliability. Therefore, in order to ensure power supply reliability, large-capacity power transformation equipment is generally selected for the old-fashioned substation.

[0032] Moreover, the old-fashioned mobile substation is provided with a transformer room for accommodating a transformer, a switchgear room for accommodating a disconnector, a vacuum circuit breaker, and an earthing knife switch, a low-voltage incoming line cabinet connected to the transformer, a feeder cabinet, and an outgoing line cabinet, resulting in a large floor area for the existing old-fashioned mobile substation.

[0033] The present utility model proposes a power transformation system.

[0034] Please refer to Figures 1 to 4 , in an embodiment of the present utility model, the power transformation system 100 includes a box body 1, a on-load voltage regulating and capacity regulating transformer 2, a circuit breaker 3 and a low-voltage switch cabinet 4. A partition 13 is arranged inside the box body 1, and the partition 13 is used to divide the space inside the box body 1 into a first chamber 141 and a second chamber 142. The first chamber 141 and the second chamber 142 are arranged at intervals in the horizontal direction; the on-load voltage regulating and capacity regulating transformer 2 is arranged in the first chamber 141; the circuit breaker 3 is arranged on the top of the on-load voltage regulating and capacity regulating transformer 2; the low-voltage switch cabinet 4 is arranged in the second chamber 142.

[0035] Among them, the on-load voltage regulating and capacity regulating transformer 2 adjusts the voltage and rated capacity, so as to effectively adapt to the power consumption requirements of different capacities, avoid the energy loss caused by using large-capacity power transformation equipment when the capacity demand is small, and thus achieve the effect of energy conservation and emission reduction; at the same time, it also avoids the problem of reduced stability caused by using small-capacity power transformation equipment when the capacity demand is large; the circuit breaker 3 is arranged on the top of the on-load voltage regulating and capacity regulating transformer 2, and the circuit breaker 3 and the on-load voltage regulating and capacity regulating transformer 2 are arranged in the first chamber 141. Through this vertical arrangement form, the chamber for accommodating the circuit breaker 3 is omitted, the floor area of the power transformation system 100 is reduced, and thus the integration degree of the power transformation system 100 is improved. Moreover, since the circuit breaker 3 and the on-load voltage regulating and capacity regulating transformer 2 are arranged in the up-down direction, and the circuit breaker 3 is arranged on the top of the on-load voltage regulating and capacity regulating transformer 2 instead of being suspended above the on-load voltage regulating and capacity regulating transformer 2, the stability of the circuit breaker 3 is effectively improved and the operation and operation safety of the circuit breaker 3 are ensured. At the same time, the power connection is also reduced; by integrating the power inlet frame circuit breaker, the power outlet frame circuit breaker, the molded case switch, the aviation plug socket and the active power filter module on the cabinet body, the integration degree of the power transformation system 100 is effectively improved. By using the low-voltage switch cabinet 4 to replace the traditional low-voltage incoming cabinet, feeder cabinet and outgoing cabinet, the number of switch cabinets is reduced, and the floor area of the power transformation system 100 is effectively reduced. It should be noted that the circuit breaker 3 is connected through a 10kV incoming line, and the circuit breaker 3 is electrically connected to the on-load voltage regulating and capacity regulating transformer 2, and the capacity of the on-load voltage regulating and capacity regulating transformer 2 can reach 1600 kVA, meeting the requirements of large-current power distribution for construction sites. It should also be noted that since the lines in the on-load voltage regulating and capacity regulating transformer 2, the circuit breaker 3 and the low-voltage switch cabinet 4 are all completed at the production end, when the power transformation system 100 is moved to the construction site, only the high-voltage cable needs to be directly connected to the circuit breaker 3, omitting the wiring links between other devices and reducing the on-site wiring work. More importantly, the first chamber 141 and the second chamber 142 are independent of each other, meeting the requirements of a high-integration and high-density power distribution system.

[0036] In one embodiment, the low-voltage switchgear cabinet 4 includes a cabinet body, a power-incoming frame circuit breaker, a power-outgoing frame circuit breaker, a molded case switch, a aviation plug socket, and a active power filter module provided on the cabinet body; by replacing the traditional low-voltage incoming cabinet, feeder cabinet, and outgoing cabinet with the low-voltage switchgear cabinet 4, the number of switchgear cabinets is reduced, effectively reducing the floor area of the power transformation system 100.

[0037] According to an embodiment of the present invention, the low-voltage switchgear cabinet 4 can be a panel cabinet. The low-voltage switchgear cabinet 4 adopts an integrated design. On the premise of meeting the requirements of the distribution capacity and feeder circuit, the functions of each part are integrated into one panel cabinet. One cabinet can realize functions such as power incoming, power feeding, and active power filtering. Thus, the number of switchgear cabinets is greatly reduced, achieving the purpose of saving floor space, miniaturizing equipment, and reducing costs. It should be noted that the low-voltage switchgear cabinet 4 is a 0.4V low-voltage switchgear cabinet.

[0038] Please refer to Figure 4 , in one embodiment, the power transformation system 100 further includes a control panel 5. The control panel 5 is provided on the outer wall of the box body 1, and the on-load tap-changer and voltage regulator transformer 2 and the circuit breaker 3 are both electrically connected to the control panel 5. By arranging the vacant panel outside the box body 1, it is convenient for the operator to control the adjustable devices electrically connected to the control panel 5 through the control panel 5. For example, the opening and closing operation of the distribution switch is safer and faster.

[0039] In one embodiment, the control panel 5 includes a transformer temperature display, a transformer control device, and a circuit breaker control device. The circuit breaker control device is electrically connected to the circuit breaker 3, and the transformer control device is electrically connected to the on-load tap-changer and voltage regulator transformer 2. Arranging the transformer temperature display outside the box body 1 facilitates the staff to obtain the data of the transformer temperature. By arranging the transformer control device and the circuit breaker control device outside the box body 1, it is convenient for the operators to operate safely and conveniently. It should be noted that the control panel 5 can be an integrated wall-mounted instrument cabinet, and an opening is provided on the side wall of the box body 1. The cabinet door of the integrated wall-mounted instrument cabinet is used to cover the opening.

[0040] In one embodiment, the control panel 5 includes an overall machine controller (not shown in the figure). The on-load voltage regulating and capacity regulating transformer 2 and the circuit breaker 3 are both electrically connected to the overall machine controller, so that the overall machine controller can obtain the operation data of the on-load voltage regulating and capacity regulating transformer 2 and adjust the gear position of the on-load voltage regulating and capacity regulating transformer 2. The overall machine controller is used for communicating with a communication management machine. By setting the overall machine controller to obtain the real-time operation data of the on-load voltage regulating and capacity regulating transformer 2 and make judgments, the on-load voltage regulating and capacity regulating transformer 2 is controlled to perform on-load capacity regulating switch shifting or capacity regulation. It should be noted that by connecting the overall machine controller and the communication management machine through cables, the substation system 100 can be remotely signaled, remotely measured and remotely controlled through the communication management machine. The construction site personnel only need to complete the power-on and power-off processes. Compared with the traditional substation where lines need to be led out from each monitored or controlled device to be connected to the management machine, the complex on-site wiring of the primary and secondary interfaces is omitted, enabling the substation system 100 to have the ability to be quickly put into operation and improving the integration degree of the electrical functions of the substation system 100.

[0041] According to an embodiment of the present invention, the substation system 100 further includes intelligent function modules such as a temperature control module, a condensation control module, a smoke alarm module, a door opening alarm module, a power parameter acquisition module, a power equipment status feedback module, and a power supply switch cabinet control module, enriching the functionality of the substation system 100 and improving the intelligence level of the substation system 100.

[0042] According to another embodiment of the present invention, the operating power supply of the equipment of the substation system 100 uses a 220V DC power supply, making the substation system 100 stable and reliable in performance.

[0043] In one embodiment, the circuit breaker 3 includes an integrated V-type circuit breaker, and the integrated V-type circuit breaker includes a disconnector, a vacuum circuit breaker, and a grounding knife. By adopting the V-type circuit breaker, the integration degree of the circuit breaker 3 is effectively improved, making the mechanical interlock highly integrated, further reducing the volume of the substation system 100, and at the same time being able to take into account the direct connection of the high-voltage cable to the circuit breaker 3.

[0044] Please refer to Figure 1 、 Figure 2 and Figure 4, in one embodiment, the box body 1 includes a box main body 11 and a skid-mounted base 12. The box main body 11 is fixed to the skid-mounted base 12, and the low-voltage switchgear 4 is arranged on the skid-mounted base 12. By providing the skid-mounted base 12, the power transformation system 100 can be moved more easily. It should be noted that the power transformation system 100 basically does not require infrastructure construction and land planning. It only needs to place the power transformation system 100 on the ground and move it according to requirements. It should also be noted that the box main body 11 adopts a welded integral structure, which makes the box main body 11 have good mechanical strength and stiffness and is not easily deformed or damaged during hoisting, transportation, and installation. The chassis components of the box main body 11 are welded by steel sections, and the frame, door, and top cover are all made of high-quality cold-rolled steel plates and are subjected to sandblasting and hot-dip galvanized anti-corrosion treatment processes. The heat preservation structure of the box main body 11 is used to ensure heat insulation in summer and heat preservation in winter.

[0045] Please refer to Figure 2 , in one embodiment, through holes 111 for cables to pass through are provided on the side wall of the box body 1. Through the through holes 111, the wiring method for electrical connection is measured near the side. Compared with the traditional method of burying cables in the ground construction for the bottom inlet of the substation, in this embodiment, the power transformation system 100 hardly needs to make a civil engineering foundation on site. When the power transformation system 100 arrives at the site, only the site needs to be basically leveled, saving a large amount of civil engineering construction work.

[0046] Please refer to Figure 2 , in one embodiment, the power transformation system 100 further includes a fence 6. The fence 6 is arranged in the first chamber 141 and is arranged around the on-load tap-changing and capacity-adjustable transformer 2. By arranging the fence 6 around the on-load tap-changing and capacity-adjustable transformer 2, the safety of the power transformation system 100 is improved. It should be noted that the fence 6 is fixed to the skid-mounted base 12.

[0047] In one embodiment, the on-load tap-changing and capacity-adjustable transformer 2 includes an oil-immersed transformer and an on-load tap-changing and capacity-adjustable switch electrically connected to the oil-immersed transformer, realizing the capacity adjustment of the on-load tap-changing and capacity-adjustable transformer 2 at a set capacity. While ensuring operation safety and power quality, the self-loss is reduced. That is, at low load, the capacity of the on-load tap-changing and capacity-adjustable transformer 2 can be adjusted to one-third of the original, thereby reducing the loss of the entire power transformation system 100.

[0048] In one embodiment, the length of the box body 1 is not greater than 4000 mm, the width of the box body 1 is not greater than 2500 mm, the height of the box body 1 is not greater than 2800 mm, and the weight of the power transformation system 100 is not greater than 9.5 T. Through the above design, the size of the box body 1 can be not greater than 4000 mm in length, not greater than 2500 mm in width, and not greater than 2800 mm in height, realizing the miniaturization of the power transformation system 100. And the weight of the power transformation system 100 is not greater than 9.5 T, which also meets the lightweight design.

[0049] The above are only exemplary embodiments of the present utility model, and do not limit the patent scope of the present utility model accordingly. Any equivalent structural transformation made under the technical concept of the present utility model by using the content of the specification and drawings of the present utility model, or any direct / indirect application in other related technical fields, is included in the patent protection scope of the present utility model.

Claims

1. A power transformation system, characterized in that: include: A box body (1), wherein a partition (13) is arranged inside the box body (1), and the partition (13) is used to separate the space inside the box body (1) into a first chamber (141) and a second chamber (142), and the first chamber (141) and the second chamber (142) are arranged at intervals in a horizontal direction; An on-load voltage-regulating and capacity-regulating transformer (2), wherein the on-load voltage-regulating and capacity-regulating transformer (2) is arranged in the first chamber (141); A circuit breaker (3), the circuit breaker (3) being arranged on the top of the on-load voltage-regulating and capacity-regulating transformer (2); A low-voltage switch cabinet (4), wherein the low-voltage switch cabinet (4) is arranged in the second chamber (142).

2. The power conversion system according to claim 1, characterized in that: The power transformation system (100) further comprises a control panel (5), wherein the control panel (5) is arranged on the outer wall of the box body (1), and the on-load voltage-capacity-adjusting transformer (2) and the circuit breaker (3) are both electrically connected to the control panel (5).

3. The power conversion system according to claim 2, characterized in that: The control panel (5) comprises a transformer temperature display, a transformer control device and a circuit breaker control device, the circuit breaker control device is electrically connected to the circuit breaker (3), and the transformer control device is electrically connected to the on-load voltage and capacity regulating transformer (2).

4. The power conversion system according to claim 2, characterized in that: The control panel (5) comprises a whole machine controller, and the on-load voltage-regulating and capacity-regulating transformer (2) and the circuit breaker (3) are both electrically connected to the whole machine controller, so that the whole machine controller can obtain the operating data of the on-load voltage-regulating and capacity-regulating transformer (2) and adjust the gear position of the on-load voltage-regulating and capacity-regulating transformer (2); the whole machine controller is used for communication connection with a communication management machine.

5. The power conversion system according to any one of claims 1 to 4, characterized in that: The circuit breaker (3) comprises an integrated V-shaped circuit breaker, and the integrated V-shaped circuit breaker comprises an isolating switch, a vacuum circuit breaker and a grounding switch.

6. The power conversion system according to any one of claims 1 to 4, characterized in that: The box body (1) comprises a box body (11) and a skid-mounted base (12); the box body (11) is fixed to the skid-mounted base (12); and the low-voltage switch cabinet (4) is arranged on the skid-mounted base (12).

7. The power conversion system according to any one of claims 1 to 4, characterized in that: The side wall of the box body (1) is provided with a through hole (111) for allowing cables to pass through.

8. The power conversion system according to any one of claims 1 to 4, characterized in that: The power transformation system (100) further comprises a fence (6), wherein the fence (6) is arranged in the first chamber (141), and the fence (6) is arranged around the periphery of the on-load voltage- and capacity-changing transformer (2).

9. The power conversion system according to any one of claims 1 to 4, characterized in that: The low-voltage switch cabinet (4) comprises a cabinet body and a power supply incoming wire frame circuit breaker, a power supply outgoing wire frame circuit breaker, a molded case switch, an aviation plug socket and an active filter module which are arranged on the cabinet body.

10. The power transformation system according to any one of claims 1 to 4, characterized in that: The length of the box (1) is not greater than 4000 mm, the width of the box (1) is not greater than 2500 mm, the height of the box (1) is not greater than 2800 mm, and the weight of the power transformation system (100) is not greater than 9.5 tonnes.

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