Reactive power compensation device

Abstract

The utility model discloses a reactive power compensation device which comprises a box body, and a soft start chamber and a reactor chamber are arranged in the box body. A soft start cabinet is arranged in the soft start chamber, an isolating switch, a lightning arrester, a soft start switch and a soft start resistor are arranged in the soft start cabinet, and a reactor is arranged in the reactor chamber. Peripheral equipment such as an isolating switch, a lightning arrester, a soft start switch, a soft start resistor and the like are integrated with the body, so that the overall integration level of the device is greatly improved, the workload of field installation and construction is reduced, meanwhile, the overall occupied area of the device is reduced, and the cost is reduced. And the civil engineering construction cost of power station construction and the overhaul difficulty of overall maintenance are reduced.

Description

Technical Field

[0001] This application relates to the field of power quality technology, and in particular to a reactive power compensation device. Background Technology

[0002] With the development of my country's carbon neutrality policy, clean energy has entered a stage of rapid development, such as the rapid growth of photovoltaic and wind power generation in the northwest and coastal areas. Variation control devices (SVG) can regulate power quality and improve the power quality of power plants, thus the demand for such devices is gradually increasing.

[0003] Reactive power compensation devices generally consist of two parts: peripheral equipment and the main unit. The peripheral equipment typically includes large isolating grounding switches, soft-start switches, and dry-type air-core reactors. Existing reactive power compensation devices often occupy a large area when installed, which increases the civil engineering costs of power plant construction and the overall maintenance and repair difficulties. Utility Model Content

[0004] In view of this, the purpose of this application is to provide a reactive power compensation device to solve the problem that the peripheral equipment and the main body of the existing reactive power compensation device are independent of each other, resulting in a large amount of on-site installation and construction work and a large overall footprint of the equipment.

[0005] The technical solution adopted in this application to solve the above-mentioned technical problems is as follows:

[0006] According to one aspect of the embodiments of this application, a reactive power compensation device is provided, including a housing, wherein a soft start chamber and a reactor chamber are disposed inside the housing;

[0007] The soft starter room is equipped with a soft starter cabinet, which contains a disconnect switch, a surge arrester, a soft starter switch, and a soft starter resistor. The reactor room is equipped with a reactor.

[0008] In one example, the enclosure also includes a power chamber and a control chamber;

[0009] The power chamber is equipped with a power valve assembly, and the control chamber is equipped with a control cabinet and a liquid cooling cabinet.

[0010] In one example, the soft-start chamber, the reactor chamber, the power chamber, and the control chamber are arranged sequentially along the length of the enclosure.

[0011] In one example, any two adjacent compartments among the soft-start room, the reactor room, the power room, and the control room are isolated from each other.

[0012] In one example, the power valve group includes a three-phase power valve group, with each phase power valve group arranged back to back.

[0013] In one example, a current sensor is also provided in the power chamber, and the power valve group is connected to the current sensor via a cable and passes through the reactor chamber to connect to the reactor.

[0014] In one example, the control cabinet is positioned behind the power chamber and near the partition between the power chamber and the control chamber. The liquid cooler is arranged on one side of the control cabinet, and the cooling pipes of the liquid cooler are connected to the cooling pipes of the power valve assembly.

[0015] In one example, the reactor is arranged in the middle of the reactor chamber and the reactor is arranged in an open manner.

[0016] In one example, a soft-start switch is provided in the soft-start room, and the reactor is connected to the soft-start switch via a cable.

[0017] In one example, an air conditioner is also installed on the side wall of the enclosure to adjust the temperature of the enclosure.

[0018] The reactive power compensation device provided in this application integrates peripheral equipment, such as disconnect switches, surge arresters, soft start switches, and soft start resistors, with the main body, which greatly improves the overall integration of the device, reduces the workload of on-site installation and construction, reduces the overall footprint of the equipment, lowers the civil construction cost of power plant construction, and reduces the difficulty of overall maintenance and repair. Attached Figure Description

[0019] Figure 1 A schematic diagram of the reactive power compensation device provided in the embodiments of this application;

[0020] Figure 2 Another perspective schematic diagram of the reactive power compensation device provided in the embodiments of this application;

[0021] Figure 3 This is a schematic diagram of a soft starter cabinet provided in an embodiment of this application.

[0022] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0023] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer and more understandable, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of this application and are not intended to limit the scope of this application.

[0024] In the description of this application, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," and "right," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0025] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances. Furthermore, in the description of this application, unless otherwise stated, "multiple" or "several" means two or more.

[0026] like Figures 1-3 As shown, this application embodiment provides a reactive power compensation device, including a housing 5, which can be a common shipping container. The housing 5 contains four compartments: a soft starter compartment 1, a reactor compartment 2, a power compartment 3, and a control compartment 4. Each compartment is independently separated, for example, by partitions that separate any two adjacent compartments.

[0027] The soft starter compartment 1 is equipped with a soft starter cabinet 6. The soft starter cabinet 6 integrates various electrical devices, such as a disconnector switch 13, a surge arrester 14, a soft starter switch 15, and a soft starter resistor 16. External cables, such as the power station's incoming cable, can pass through the cable hole and connect to the disconnector switch 13; the disconnector switch 13 is connected to one end of the surge arrester 14, the soft starter switch 15, and the soft starter resistor 16 via a copper busbar; the other end of the surge arrester 14 is grounded; the soft starter switch 15 and the soft starter resistor 16 are connected in parallel.

[0028] A reactor 7 is installed inside the reactor compartment 2. The reactor 7 is arranged in the middle of the reactor compartment 2 in an open layout. The reactor 7 is connected to the soft start switch 15 via a cable, for example, through the bushing of the soft start cabinet 6.

[0029] Power chamber 3 is equipped with power valve groups 9, for example, three power valve groups 9, each representing one phase, from left to right: phases A, B, and C. Each phase power valve group 9 is arranged back-to-back. Power chamber 3 also contains current sensors 8, such as Hall effect current sensors. The current sensors 8 are located at the partition between reactor chamber 2 and power chamber 3, near the bottom of power chamber 3. A slotted hole can be opened at the fixing point, and there are no closed metal parts between phases. Corresponding to the power valve groups 9, the current sensors 8 are three-phase current sensors. Each phase power valve group 9 is connected to the current sensor 8 via a cable that passes through reactor chamber 2 and connects to reactor 7; that is, the cable passes through reactor chamber 2 and connects to reactor 7.

[0030] The control room 4 houses a control cabinet 10 and a liquid-cooled cabinet 11. The control cabinet 10 is positioned against the power room 3 and near the partition between the power room 3 and the control room 4. The liquid-cooled cabinet 11 is located to one side of the control cabinet 10, for example, on its right side. The cooling pipes of the liquid-cooled cabinet 11 are connected to the cooling pipes of the power valve assembly 9, including inlet and outlet pipes. For example, the cooling pipes of the power valve assembly 9 pass through the partition from the top of the valve assembly and connect to the cooling pipes at the top of the liquid-cooled cabinet 11.

[0031] In a further implementation, a wall-mounted industrial air conditioner 12 is also installed on the side wall of the enclosure 5. The air conditioner 12 can adjust the temperature in the reactor room 2, power room 3 or control room 4, for example, by lowering the indoor temperature of these rooms.

[0032] This reactive power compensation device integrates the peripheral equipment and the main body into one, which greatly improves the overall integration of the device, reduces the workload of on-site installation and construction, reduces the overall footprint of the equipment, lowers the civil construction cost of the power station, and reduces the difficulty of overall maintenance and repair.

[0033] The preferred embodiments of this application have been described above with reference to the accompanying drawings, but this does not limit the scope of the application. Those skilled in the art can implement this application in various modifications without departing from its scope and spirit; for example, a feature of one embodiment can be used in another embodiment to obtain yet another embodiment. Any modifications, equivalent substitutions, and improvements made within the scope of the technical concept of this application should be within the scope of the application.

Claims

1. A reactive power compensation device, characterized in that, The enclosure includes a soft-start chamber and a reactor chamber. The soft starter room is equipped with a soft starter cabinet, which contains a disconnect switch, a surge arrester, a soft starter switch, and a soft starter resistor. The reactor room is equipped with a reactor.

2. The reactive power compensation device according to claim 1, characterized in that, The enclosure also includes a power chamber and a control chamber. The power chamber is equipped with a power valve assembly, and the control chamber is equipped with a control cabinet and a liquid cooling cabinet.

3. The reactive power compensation device according to claim 2, characterized in that, The soft starter chamber, the reactor chamber, the power chamber, and the control chamber are arranged sequentially along the length of the enclosure.

4. The reactive power compensation device according to claim 2, characterized in that, Any two adjacent compartments among the soft-start room, the reactor room, the power room, and the control room are isolated from each other.

5. The reactive power compensation device according to claim 2, characterized in that, The power valve group includes a three-phase power valve group, with each phase power valve group arranged back to back.

6. The reactive power compensation device according to claim 2, characterized in that, A current sensor is also installed in the power chamber. The power valve group is connected to the current sensor via a cable and passes through the reactor chamber to connect to the reactor.

7. The reactive power compensation device according to claim 2, characterized in that, The control cabinet is positioned against the power chamber and close to the partition between the power chamber and the control chamber. The liquid cooler is arranged on one side of the control cabinet, and the cooling pipes of the liquid cooler are connected to the cooling pipes of the power valve assembly.

8. The reactive power compensation device according to claim 1, characterized in that, The reactor is arranged in the middle of the reactor chamber and is in an open arrangement.

9. The reactive power compensation device according to claim 1, characterized in that, The soft starter room is equipped with a soft starter switch, and the reactor is connected to the soft starter switch via a cable.

10. The reactive power compensation device according to claim 1, characterized in that, An air conditioner is also installed on the side wall of the enclosure to adjust the temperature inside the enclosure.

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