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KR-102964628-B1 - REACTOR FOR ESCAPING RESONANT FREQUENCY

KR102964628B1KR 102964628 B1KR102964628 B1KR 102964628B1KR-102964628-B1

Abstract

The present invention relates to a resonance avoidance reactor, comprising: a first tie rod unit that penetrates and is connected to an upper clamp bridge; a second tie rod unit that penetrates and is connected to a lower clamp base; and a connecting unit that connects the first and second tie rod units between the first and second tie rod units, wherein the connecting unit may further include a plurality of linear members that are arranged linearly parallel to each other and connect the first tie rod unit and the second tie rod unit. The present invention includes a plurality of linear members in a reactor and provides spacers on the plurality of linear members to achieve a phase change of the reactor, thereby avoiding resonance, and thereby reducing deterioration, noise, stress concentration, and fatigue of the transformer or reactor.

Inventors

  • 이종문

Assignees

  • 에이치디현대일렉트릭 주식회사

Dates

Publication Date
20260512
Application Date
20240903

Claims (15)

  1. A first tie rod unit that penetrates and connects to the upper clamp bridge; A second tie rod unit that penetrates and connects to the lower clamp base; and A connecting unit comprising a plurality of linear members arranged parallel to each other to connect the first and second tie rod units between the first and second tie rod units; Includes, A first binding part to which the other end of the first tie rod unit is connected and connected to the connecting unit; and A second connecting part to which the other end of the second tie rod unit is connected and which is connected to the connecting unit; A resonance-avoiding reactor including additional
  2. In paragraph 1, The above first and second tie rods are stud bolts, resonance avoidance reactor.
  3. delete
  4. In paragraph 1, The above connecting unit is a resonance avoidance reactor formed of stainless steel.
  5. In paragraph 1, The above plurality of linear members are resonance avoidance reactors arranged at equal intervals from each other.
  6. In paragraph 5, The above linear member is a resonance avoidance reactor in which both ends are formed with stud bolts.
  7. In paragraph 1, A plurality of spacers that penetrate the plurality of linear members and are arranged along the longitudinal direction of the plurality of linear members; A resonance-avoiding reactor including additional
  8. In Paragraph 7, The above plurality of spacers are resonance avoidance reactors arranged at different adjacent distances from each other.
  9. In Paragraph 7, The above spacer is a resonance avoidance reactor formed in a columnar shape.
  10. In Paragraph 7, The above spacer is, A through-hole formed to allow insulating oil to flow; A resonance-avoiding reactor including additional
  11. In Paragraph 10, The above through-hole portion is a resonance avoidance reactor positioned in the center of the spacer surrounded by the plurality of linear members.
  12. In Paragraph 7, The above spacer is a resonance avoidance reactor made of EGP (EPOXY GLASS PREPREG) material.
  13. In Paragraph 7, The above spacer is a resonance avoidance reactor made of insulating material.
  14. In Paragraph 7, The above spacer is a resonance avoidance reactor made of a non-metallic material.
  15. In Paragraph 7, The above spacer is a resonance avoidance reactor made of wood.

Description

Resonance Escape Reactor The present invention relates to a resonance avoidance reactor. Generally, a reactor is a device that limits voltage rise and fault current in the event of a fault in a power system by accumulating electromagnetic energy. Reactors are widely used in applications ranging from small electronic devices to large-scale substations and transmission facilities. In particular, ultra-high voltage, large-capacity reactors are primarily used in large-scale substations and transmission facilities. Meanwhile, fixing devices are provided at both ends of the reactor to secure the core, and the core is fastened using a tie rod assembly. At this time, the tie rod penetrates the core containing the ceramic and packet, and a large fastening force is required to secure it. In addition, heat is generated by magnetic flux in the reactor, and if resonance occurs in a reactor subjected to large tensile forces, vibration and noise increase. Furthermore, there is a problem in that stress is concentrated at both ends of the reactor due to resonance, leading to a risk of fatigue failure. FIG. 1 is a perspective view of a reactor in which an embodiment of the present invention is installed. Figure 2 is a perspective view showing the interior of Figure 1. FIG. 3 is a front view of a resonance avoidance tie rod assembly according to an embodiment of the present invention. Fig. 4 is another embodiment of Fig. 3. Figure 5(a) is a perspective view of the spacer in Figure 4. Figure 5(b) is a plan view of Figure 5(a). Figure 6 is an exemplary diagram showing the natural vibration modes of the resonance avoidance reactor of Figure 3. Figure 7 is an exemplary diagram showing the natural vibration modes of the resonance avoidance reactor of Figure 4. Hereinafter, some embodiments of the present invention will be described in detail with reference to exemplary drawings. It should be noted that in assigning reference numerals to the components of each drawing, the same components are given the same reference numeral whenever possible, even if they are shown in different drawings. Furthermore, in describing the embodiments of the present invention, if it is determined that a detailed description of related known components or functions would hinder understanding of the embodiments of the present invention, such detailed description is omitted. Additionally, terms such as first, second, A, B, (a), (b), etc., may be used when describing the components of the embodiments of the present invention. These terms are intended merely to distinguish the components from other components, and the essence, order, or sequence of the components is not limited by these terms. Where it is stated that a component is “connected,” “combined,” or “joined” to another component, it should be understood that the component may be directly connected or joined to the other component, but that another component may also be “connected,” “combined,” or “joined” between each component. Hereinafter, a resonance avoidance reactor according to an embodiment of the present invention will be described with reference to the attached drawings. FIG. 1 is a perspective view of a reactor in which an embodiment of the present invention is installed, and FIG. 2 is a perspective view showing the interior of FIG. 1. Referring to FIGS. 1 and 2, a resonance avoidance reactor according to an embodiment of the present invention may be installed in a leg core (not labeled) comprising a packet (10) and a ceramic (11). The reactor (1) may include an upper clamp bridge (30) and a lower clamp base (40) installed at the upper and lower ends of the leg core, respectively. At this time, the upper and lower ends of the reactor (1) may be fixed to the upper clamp bridge (30) and the lower clamp base (40), respectively. Additionally, a clamp (50) comprising an upper clamp (51) and a lower clamp (52) may be positioned on the outer side of the upper core (not labeled), the lower core (not labeled), and the guard core (not labeled) and mutually fixed to form the structure of the reactor (1). FIG. 3 is a front view of a resonance avoidance reactor according to an embodiment of the present invention. Referring to FIG. 3, a resonance avoidance reactor according to one embodiment of the present invention may include a first tie rod unit (100), a second tie rod unit (200), and a connecting unit (300). The first tie rod unit (100) can be connected by penetrating the upper yoke (not shown) (see FIG. 2). At this time, the first tie rod unit (100) can be formed with a stud bolt. That is, the upper end of the first tie rod unit (100) can be connected to the upper clamp bridge (30) by penetrating the upper yoke and joining with a separate nut (not shown). One end of the first tie rod unit (100) may be connected to an upper clamp bridge (30), and the other end may include a first binding part (110) for connecting to a connecting unit (300) described later. The first binding part (110) may be a sea