Anti-seismic equipment for intelligent power grid transformer substation

Abstract

The invention is applicable to the field of power grid equipment, and provides anti-seismic equipment for a smart power grid substation, which comprises a supporting base and further comprises a buffer support, a plurality of telescopic rods are fixedly connected to the supporting base, and the buffer support is fixedly connected to the tops of the telescopic rods; the suspension assembly comprises a plurality of supporting columns fixedly connected to the supporting base, mooring ropes are fixedly connected to the tops of the supporting columns, and the other ends of the mooring ropes are connected with a mounting bottom plate located on the buffering supporting columns; and the longitudinal adjusting assembly is arranged on the supporting base, and the output end of the longitudinal adjusting assembly is connected with the buffering support. The anti-seismic base has the advantages that the anti-seismic effect is achieved in the mode that a conventional damping base and a suspension system are combined, and the application range of the anti-seismic effect is greatly widened.

Description

Technical Field

[0001] The present invention belongs to the field of power grid equipment, and in particular relates to anti-seismic equipment for smart grid substations. Background Art

[0002] Smart grid substations are key components of modern power systems, which use advanced information technology, communication technology and control technology to improve the efficiency, reliability and safety of power transmission and distribution.

[0003] Smart substations achieve automated operation and management through the use of intelligent electronic devices (IEDs). These devices monitor, protect, and control the operating status of the power system. Substations contain a wide variety of electrical equipment. Because these devices utilize sophisticated components, they require seismic resistance. These devices are installed on dedicated seismic-resistant bases to ensure long-term stable operation, which is crucial for maintaining the stability of the entire power grid.

[0004] In actual situations, the types of vibrations that occur mainly include high-frequency vibrations and low-frequency vibrations. Conventional anti-seismic equipment has limitations and is targeted at a certain type of vibration. However, there are many factors that cause vibrations, such as equipment operation, geological activities, etc., which cause the type of vibration to change. The existing anti-seismic equipment has insufficient adaptability. Therefore, an anti-seismic equipment for smart grid substations is proposed to solve the above problems. Summary of the Invention

[0005] The purpose of the embodiments of the present invention is to provide a seismic resistance device for a smart grid substation, aiming to solve the problems mentioned in the above background technology.

[0006] The embodiment of the present invention is implemented as follows: a seismic resistance device for a smart grid substation includes a support base and further includes:

[0007] A buffer support is located on the support base. A plurality of telescopic rods are fixedly connected to the support base, and the telescopic rods themselves are in a vertical state. The buffer support is fixedly connected to the top of the plurality of telescopic rods;

[0008] The suspension assembly includes a plurality of pillars fixedly connected to the support base, the tops of the pillars are fixedly connected to cables, and the other ends of the plurality of cables are connected to a mounting base located on the buffer pillars, and the substation equipment is mounted on the mounting base;

[0009] A longitudinal adjustment component is arranged on the support base, and the output end of the longitudinal adjustment component is connected to the buffer support. The longitudinal adjustment component is used to drive the buffer support to move in the vertical direction so that the buffer support is separated from or contacted with the mounting base.

[0010] Preferably, a vibration detector is provided on the mounting base plate, and the vibration detector is used to detect the vibration frequency of the mounting base plate connected to the power transformation equipment. The specific steps include:

[0011] Acquiring a comprehensive time domain signal collected by a vibration detector and performing correction processing on the signal, wherein the vibration detector collects data according to a set sampling rate and detection time;

[0012] The processed integrated time domain signal is converted into a frequency domain signal using fast Fourier transform to generate a spectrum diagram;

[0013] According to the main frequency position and energy distribution of the spectrum graph, combined with the frequency range division standard, the current vibration type is judged;

[0014] When the vibration is high frequency, a control signal is sent to the longitudinal adjustment component, so that the longitudinal adjustment drives the buffer support to move and separate from the mounting base.

[0015] Preferably, the vibration detector is a three-axis accelerometer, which is used to collect vibrations of the installation base along the X, Y, and Z directions, and the integrated time domain signal includes acceleration time domain signals in the X, Y, and Z directions.

[0016] Preferably, the longitudinal adjustment assembly includes a rotating drive member fixedly connected to the bottom of the support base, the output end of the rotating drive member is connected to a screw rod vertically connected to the support base, and the bottom of the buffer support is fixedly connected to a sleeve that cooperates with the screw rod.

[0017] Preferably, the buffer support includes a bottom shell fixedly connected to the sleeve, a plurality of first buffer columns arranged in the vertical direction are fixedly connected inside the bottom shell, the other ends of the plurality of first buffer columns are fixedly connected to a cover body located on the top of the bottom shell, and a plurality of second buffer columns arranged in the horizontal direction are fixedly connected to the side of the bottom shell, and the other ends of the second buffer columns are connected to the inner side wall of the cover body.

[0018] Preferably, the mounting base is fixedly connected with a plurality of mounting sockets for mounting power transformation equipment, and a connecting structure is provided between the mounting base and the buffer support. When the mounting base contacts the buffer support, the connecting structure is used to form the mounting base and the buffer support into an integral structure.

[0019] Preferably, the connection structure includes a plurality of ball studs mounted on the buffer support, the ball studs being evenly arranged on the buffer support, and also includes a card hole opened on the mounting base and corresponding to the ball studs.

[0020] Preferably, a protective cover shell in a surrounding state is fixedly connected to the edge of the support base.

[0021] An embodiment of the present invention provides an anti-seismic device for a smart grid substation, which has the following beneficial effects:

[0022] When this equipment is in use, the substation equipment is installed on the mounting base, and this equipment supports the substation equipment. Under normal conditions, since the buffer support and the mounting base are in contact and connection, the buffer support is in use. This form of seismic resistance is the same as the conventional shock-absorbing base. The characteristic is that this equipment can drive the buffer support to move downward through the longitudinal adjustment component, so that the buffer support is separated from the mounting base. At this time, the mounting base and the substation equipment as a whole are suspended by cables. This suspension system can cope with some special vibration conditions. In summary, this seismic resistance equipment adopts a combination of conventional shock-absorbing base and suspension system to achieve seismic resistance effect, which greatly increases the scope of application of the seismic resistance effect and ensures that the substation equipment has a stable operating state under various vibration conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A three-dimensional structural diagram of a seismic-resistant device for a smart grid substation provided by an embodiment of the present invention;

[0024] Figure 2 An internal structural diagram of a seismic-resistant device for a smart grid substation provided by an embodiment of the present invention;

[0025] Figure 3 for Figure 2 Front view of

[0026] Figure 4 A schematic diagram of the distribution of ball studs provided in an embodiment of the present invention;

[0027] Figure 5 A schematic structural diagram of a buffer support provided in an embodiment of the present invention;

[0028] Figure 6 This is a flow chart of detecting vibration frequency by a vibration detector provided by an embodiment of the present invention.

[0029] In the accompanying drawings: 1. Support base; 2. Buffer support; 201. Bottom shell; 202. First buffer column; 203. Cover body; 204. Second buffer column; 3. Suspension assembly; 301. Pillar; 302. Cable; 303. Mounting base; 4. Longitudinal adjustment assembly; 401. Rotating drive member; 402. Screw; 403. Sleeve; 5. Vibration detector; 6. Mounting socket; 7. Ball pin; 8. Clamp hole; 9. Protective cover shell; 10. Telescopic rod. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0031] The specific implementation of the present invention is described in detail below with reference to specific embodiments.

[0032] like Figure 1 、 Figure 2 and Figure 3 As shown, an embodiment of the present invention provides 1. A seismic resistance device for a smart grid substation, comprising a support base 1, and further comprising:

[0033] The buffer support 2 is located on the support base 1. A plurality of telescopic rods 10 are fixedly connected to the support base 1, and the telescopic rods 10 themselves are in a vertical state. The buffer support 2 is fixedly connected to the top of the plurality of telescopic rods 10;

[0034] The suspension assembly 3 includes a plurality of pillars 301 fixedly connected to the support base 1. Cables 302 are fixedly connected to the tops of the pillars 301. The other ends of the plurality of cables 302 are connected to a mounting base 303 located on the buffer pillars 301. The mounting base 303 is mounted with power substation equipment.

[0035] The longitudinal adjustment component 4 is arranged on the support base 1, and the output end of the longitudinal adjustment component 4 is connected to the buffer support 2. The longitudinal adjustment component 4 is used to drive the buffer support 2 to move in the vertical direction, so that the buffer support 2 is separated from or contacted with the mounting base 303.

[0036] In one embodiment of the present invention, when the device is in use, the substation equipment is installed on the mounting base 303, and the device supports the substation equipment. Under normal conditions, since the buffer support 2 is in contact and connection with the mounting base 303, the buffer support 2 is in use. This form of seismic resistance is the same as a conventional shock-absorbing base. The characteristic is that the device can drive the buffer support 2 to move downward through the longitudinal adjustment component 4, so that the buffer support 2 is separated from the mounting base 303. At this time, the mounting base 303 and the substation equipment as a whole are suspended by the cable 302. This suspension system can cope with some special vibration conditions. In summary, the seismic resistance device adopts a combination of a conventional shock-absorbing base and a suspension system to achieve a seismic resistance effect, which greatly increases the scope of application of the seismic resistance effect and ensures that the substation equipment has a stable operating state under various vibration conditions.

[0037] In one embodiment of the present invention, Figure 2 and Figure 4As shown, the mounting base 303 is fixedly connected with a plurality of mounting sockets 6 for mounting power transformer equipment. The mounting sockets 6 provide a position for the installation of the power transformer equipment. The power transformer equipment can be fixed to the mounting base 303 by bolt connection. A connecting structure is provided between the mounting base 303 and the buffer support 2. When the mounting base 303 contacts the buffer support 2, the connecting structure is used to form the mounting base 303 and the buffer support 2 into an integral structure. The connecting structure includes a plurality of ball pins 7 installed on the buffer support 2. The ball pins 7 are evenly arranged on the buffer support 2. It also includes a card hole 8 opened on the mounting base 303 and corresponding to the ball pin 7. The ball head part of the ball pin 7 has the characteristic of elastic deformation. When the longitudinal adjustment component 4 drives the buffer support 2 to move downward, the ball pin 7 will be separated from the card hole 8. At this time, the mounting base 303 is only connected to the support base 1 through the cable 302 and is in a suspended state. The cable 302 itself has a certain rigidity and plays a role in maintaining the posture of the mounting base 303 itself. It should be noted that when the buffer support 2 and the mounting base 303 are restored to the connection state, the ball pin 7 needs to re-enter the card hole 8. Therefore, the mounting base 303 and the power substation above it need to be in a stable state to ensure that the ball pin 7 is aligned with the card hole 8. In addition, Figure 1 As shown, a protective cover shell 9 in a surrounding state is fixedly connected to the edge of the support base 1. The protective cover shell 9 can provide a certain degree of protection for the internal mechanical structure and also improve the integrity of the earthquake-resistant equipment.

[0038] like Figure 3 and Figure 5 As shown, as a preferred embodiment of the present invention, the longitudinal adjustment component 4 includes a rotating drive member 401 fixedly connected to the bottom of the support base 1, the output end of the rotating drive member 401 is connected to a screw rod 402 vertically connected to the support base 1, and the bottom of the buffer support 2 is fixedly connected to a sleeve 403 that cooperates with the screw rod 402.

[0039] In one case of this embodiment, the rotating drive member 401 can be in the form of a reduction motor, and of course it can also be in the form of a hydraulic motor. Its main function is to control the rotation of the screw rod 402, so as to control the upper buffer support 2 to rise and fall. The buffer support 2 includes a bottom shell 201 fixedly connected to the sleeve 403, and a plurality of first buffer columns 202 arranged in the vertical direction are fixedly connected to the bottom shell 201. The other ends of the plurality of first buffer columns 202 are fixedly connected to the cover body 203 located on the top of the bottom shell 201, and the side of the bottom shell 201 is fixedly connected to a plurality of first buffer columns 202 arranged in the horizontal direction. A second buffer column 204 is set, and the other end of the second buffer column 204 is connected to the inner wall of the cover body 203. In this embodiment, the first buffer column 202 and the second buffer column 204 adopt a conventional elastic telescopic structure, which has the function of buffering and shock absorption. Since multiple second buffer columns 204 are set on the side of the bottom shell 201, vibrations in two directions of the plane can be suppressed, and the first buffer column 202 is mainly used to suppress vibrations in the vertical direction. The first buffer column 202 and the second buffer column 204 cooperate with each other, so that vibrations in all directions can be well handled.

[0040] like Figure 2 As shown in FIG. 1 , as a preferred embodiment of the present invention, a vibration detector 5 is provided on the mounting base plate 303. The vibration detector 5 is used to detect the vibration frequency of the mounting base plate 303 to which the transformer is connected. Figure 6 As shown, the specific steps include:

[0041] Acquire the integrated time domain signal collected by the vibration detector 5 and perform correction processing on it. The vibration detector 5 collects data according to the set sampling rate and detection time;

[0042] The processed integrated time domain signal is converted into a frequency domain signal using fast Fourier transform to generate a spectrum diagram;

[0043] According to the main frequency position and energy distribution of the spectrum graph, combined with the frequency range division standard, the current vibration type is judged;

[0044] When the vibration is high frequency, a control signal is sent to the longitudinal adjustment component 4 , so that the longitudinal adjustment drives the buffer support 2 to move and separate from the mounting base 303 .

[0045] In one case of this embodiment, the vibration detector 5 is a three-axis accelerometer, which is used to collect vibrations of the mounting base 303 along the X, Y, and Z directions. The integrated time domain signal includes acceleration time domain signals in the X, Y, and Z directions. In the vibration monitoring and active vibration reduction processing of the substation equipment, the vibration detector 5 (such as a three-axis accelerometer) installed on the base plate is first used to collect the integrated time domain signal at a set sampling rate (for example, 1kHz) and detection time (such as 1 second). The signal contains vibration data in the X, Y, and Z directions. Subsequently, the original signal is corrected, including removing gravity offset (such as deducting static components through a software algorithm) and environmental noise filtering (such as using a low-pass / high-pass filter or a Hanning window function) to ensure data accuracy. For example, in transformer detection, if the X-axis signal fluctuates abnormally due to loose installation, the high-frequency noise can be removed by a filtering algorithm to retain the true vibration characteristics. Then, the corrected time domain signal is converted into a frequency domain signal using a fast Fourier transform (FFT) to generate a spectrum diagram, thereby intuitively identifying the distribution characteristics of the vibration energy. According to the main frequency position and energy distribution of the spectrum diagram, and combined with the frequency division standard, the system can determine the current vibration type. This part also needs to extract the fundamental frequency (such as the equipment operating frequency) and its harmonics, sideband frequency (such as the modulation frequency caused by mechanical failure) and other features. When it is identified as a high-frequency vibration, the control system will automatically send a signal to the rotating drive member 401 in the longitudinal adjustment component 4, driving the buffer support 2 to move and separate from the mounting base 303, so that the mounting base 303 is in a suspended state. It should be noted that the frequency range of the high-frequency vibration is usually greater than 1000Hz, and the distinction between high-frequency vibration and low-frequency vibration is judged based on 1000Hz. The buffer support 2 corresponds to a conventional shock-absorbing base, while the mounting base 303 and the cable 302 correspond to the suspension system. The shock-absorbing base is not suitable for low-frequency vibration. The suppression effect is relatively excellent, and the suspension system is relatively excellent in handling high-frequency vibrations, but the load-bearing capacity of the suspension system is limited, which means that the substation equipment cannot be heavy equipment. The conventional electrical control cabinet meets the requirements. The vibration detector 5 will continuously collect vibration data. When the vibration frequency is greater than 1000Hz, the buffer support 2 will be controlled to move down, so that the suspension system can play a role. When the vibration frequency is not within this range, the buffer support 2 will move up and be connected to the mounting base 303 through the connecting structure. At this time, it will play the role of a conventional shock-absorbing base.

[0046] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0047] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0048] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A seismic-resistant device for a smart grid substation, comprising a support base (1), characterized in that: Also includes: A buffer support (2), the buffer support (2) is located on a support base (1), a plurality of telescopic rods (10) are fixedly connected to the support base (1), and the telescopic rods (10) themselves are in a vertical state, and the buffer support (2) is fixedly connected to the tops of the plurality of telescopic rods (10); A suspension assembly (3), the suspension assembly (3) comprising a plurality of pillars (301) fixedly connected to a support base (1), a cable (302) fixedly connected to the top of the pillars (301), the other ends of the plurality of cables (302) being connected to a mounting base (303) located on the buffer pillars (301), and a power conversion device being mounted on the mounting base (303); A longitudinal adjustment component (4) is provided on the support base (1), an output end of the longitudinal adjustment component (4) is connected to the buffer support (2), and the longitudinal adjustment component (4) is used to drive the buffer support (2) to move in a vertical direction, so that the buffer support (2) is separated from or in contact with the mounting base (303).

2. The earthquake-resistant equipment for smart grid substation according to claim 1, characterized in that: A vibration detector (5) is provided on the installation base plate (303), and the vibration detector (5) is used to detect the vibration frequency of the installation base plate (303) connected to the power conversion equipment. The specific steps include: Acquiring a comprehensive time domain signal collected by a vibration detector (5) and performing correction processing on the signal, wherein the vibration detector (5) collects data according to a set sampling rate and detection time; The processed integrated time domain signal is converted into a frequency domain signal using fast Fourier transform to generate a spectrum diagram; According to the main frequency position and energy distribution of the spectrum graph, combined with the frequency range division standard, the current vibration type is judged; When the vibration is of high frequency, a control signal is sent to the longitudinal adjustment component (4), so that the longitudinal adjustment drives the buffer support (2) to move and separate from the mounting base (303).

3. The earthquake-resistant equipment for smart grid substation according to claim 2, characterized in that: The vibration detector (5) is a three-axis accelerometer used to collect vibrations of the mounting base plate (303) along the three directions of X, Y, and Z. The integrated time domain signal includes acceleration time domain signals in the three directions of X, Y, and Z.

4. The earthquake-resistant equipment for smart grid substation according to claim 1, characterized in that: The longitudinal adjustment assembly (4) comprises a rotary drive member (401) fixedly connected to the bottom of the support base (1); the output end of the rotary drive member (401) is connected to a screw rod (402) vertically connected to the support base (1); and a sleeve (403) is fixedly connected to the bottom of the buffer support (2) and is connected to the screw rod (402).

5. The earthquake-resistant equipment for smart grid substation according to claim 4, characterized in that: The buffer support (2) comprises a bottom shell (201) fixedly connected to the sleeve (403); a plurality of first buffer columns (202) arranged in a vertical direction are fixedly connected inside the bottom shell (201); the other ends of the plurality of first buffer columns (202) are fixedly connected to a cover body (203) located on the top of the bottom shell (201); a plurality of second buffer columns (204) arranged in a horizontal direction are fixedly connected to the side surface of the bottom shell (201); the other ends of the second buffer columns (204) are connected to the inner side wall of the cover body (203).

6. The earthquake-resistant equipment for smart grid substation according to claim 1, characterized in that: The mounting base plate (303) is fixedly connected to a plurality of mounting bases (6) for mounting power conversion equipment, and a connecting structure is provided between the mounting base plate (303) and the buffer support (2). When the mounting base plate (303) contacts the buffer support (2), the connecting structure is used to form the mounting base plate (303) and the buffer support (2) into an integral structure.

7. The earthquake-resistant equipment for smart grid substation according to claim 6, characterized in that: The connection structure comprises a plurality of ball studs (7) mounted on the buffer support (2), the ball studs (7) being evenly arranged on the buffer support (2), and also comprises a clamping hole (8) provided on the mounting base plate (303) and corresponding to the ball studs (7).

8. The earthquake-resistant equipment for smart grid substation according to claim 1, characterized in that: A protective cover shell (9) in a surrounding state is fixedly connected to the edge of the support base (1).

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