Array vibration and mechanical characteristic simultaneous sequence acquisition method and device for multi-fault GIS

Abstract

The application discloses a method and device for simultaneously collecting array vibration and mechanical characteristics of a multi-fracture GIS, and the vibration acceleration sensor is installed on the fracture to collect vibration signals, and the number of action time sequence complete events during GIS opening and closing operations is determined; a rigid body dynamics model is established to simulate the GIS opening and closing operations, and the number of action time sequence complete feedback events during simulation is obtained; when the number of action time sequence complete feedback events is equal to the number of action time sequence complete events, the optimal installation position of the vibration acceleration sensor is determined; the vibration transmission and collection time delay of each vibration acceleration sensor is obtained; the vibration transmission and collection time delay is superimposed on the time interval of each action time sequence during the GIS opening and closing operations to obtain the performance time interval of each action time sequence; and the performance time interval of each vibration signal is marked in the performance time interval of each action time sequence, so that the problems of improper installation, excessive vibration transmission and collection time delay of the vibration and mechanical characteristic collection device are solved.

Description

Technical Field

[0001] This invention relates to the field of gas-insulated fully enclosed combined electrical equipment (GIS) monitoring, and particularly to a method and device for simultaneous acquisition of array-type vibration and mechanical characteristics of multi-break GIS. Background Technology

[0002] Gas-insulated, fully enclosed switchgear (GIS) is an important operating control and fault-breaking device in power transmission. To reduce... The use of series connection technology for double-break and even multi-break vacuum circuit breakers is an effective way to develop vacuum circuit breakers to higher voltage levels. However, conventional mechanical characteristic acquisition devices often lack vibration characteristic acquisition capabilities. During data post-processing, it is impossible to accurately mark the key timing sequence of mechanical characteristics in the vibration characteristics, resulting in a matching time delay between vibration and mechanical characteristics. This easily leads to a decrease in accuracy during subsequent fault diagnosis and life prediction of GIS. At the same time, the existing installation methods of monitoring modules for acquiring vibration and mechanical characteristics of switchgear do not take into account the structural characteristics of multi-break GIS and lack effective theoretical support. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this invention provides a method and apparatus for simultaneous array-type vibration and mechanical characteristic acquisition of multi-break GIS. Based on simulation theory calculations, the vibration monitoring module is effectively installed on the shell of the multi-break GIS, and the stroke monitoring module is installed on the operating mechanism. This solves the problems of incompatible installation and excessive time delay in vibration and mechanical characteristic acquisition devices.

[0004] The present invention adopts the following technical solution.

[0005] This invention proposes a method for simultaneous acquisition of array-type vibration and mechanical characteristics of multi-fracture GIS, comprising: Vibration acceleration sensors are installed at the break points of the GIS to collect vibration signals, and displacement sensors are installed at the operating mechanism to collect stroke curves; based on the temporal correlation characteristics of the vibration signals and stroke curves, the number of complete action timing events during the opening and closing operations of the GIS is determined. A rigid body dynamics model of a multi-break GIS is established to simulate the opening and closing operation of the GIS. The installation position of the vibration acceleration sensor is mapped to the position of each measuring point in the rigid body dynamics model. The number of complete action timing feedback events during simulation is obtained. When the number of complete action timing feedback events is equal to the number of complete action timing events, the measuring point position is taken as the optimal installation position of the vibration acceleration sensor. During GIS opening and closing operations, the time of the first impact between the moving contact and the stationary contact, collected by the displacement sensor, is used as the reference time; the time of the first impact of the maximum peak acceleration of each vibration acceleration sensor is used as the calibration time, and the difference between the calibration time and the reference time is used as the vibration acquisition delay of each vibration acceleration sensor. Based on the stroke curves collected in real time by each displacement sensor, the time intervals of each action sequence during the GIS opening and closing operation are determined. The corresponding vibration transmission acquisition delay is superimposed on the time intervals of each action sequence to obtain the performance time interval of each action sequence. Based on the vibration signal collected in real time by the vibration acceleration sensor at the optimal installation position, the performance time interval of each vibration signal is marked within the performance time interval of each action sequence.

[0006] Preferably, the number of breaks in the multi-break GIS is n, and the number of vibration acceleration sensors installed is not less than 2n, and the number of displacement sensors is not less than n.

[0007] Preferably, based on the temporal correlation characteristics of vibration signals and stroke curves, the action sequence and time interval of GIS opening and closing operations are determined, and the number of complete action sequence events in multi-break GIS is recorded, wherein the event containing the time interval of all action sequences is considered a complete action sequence event.

[0008] Preferably, the host computer preprocesses the vibration signal to extract vibration characteristic quantities; based on the vibration characteristic quantities, a rigid body dynamic model of the multi-fracture GIS is established and the modal performance is corrected; The installation positions of the vibration acceleration sensors are mapped to various measuring points in the corrected rigid body dynamics model; when using the corrected rigid body dynamics model to simulate the opening and closing operation of GIS, the number of complete feedback events of the action timing during the simulation is obtained.

[0009] Preferably, if the number of complete action timing feedback events is greater than the number of complete action timing events... If the value is multiplied by a factor of 1, then the current measurement point location is determined to meet the data acquisition requirements. The value is an integer not less than 1; if the number of complete action timing feedback events is not greater than the number of complete action timing events. If the value is multiplied by a factor of 1, it is determined that the current measuring point position does not meet the data acquisition requirements. The positions of each measuring point in the rigid body dynamics model are then adjusted until the data acquisition requirements are met. The corresponding measuring point is then used as the preferred installation position for the vibration acceleration sensor.

[0010] Preferably, after adjusting the vibration acceleration sensor on the GIS to the preferred installation position, based on the time-series correlation characteristics between the vibration signal collected in real time by the vibration acceleration sensor at the preferred installation position and the stroke curve collected in real time by the displacement sensor installed at the operating mechanism, the number of complete action timing events during the GIS opening and closing operation is updated; when the updated number of complete action timing events is equal to the number of complete action timing feedback events, the measuring point position is taken as the optimal installation position of the vibration acceleration sensor.

[0011] This invention also proposes an array-type simultaneous vibration and mechanical characteristic acquisition device for multi-fracture GIS, comprising: The acquisition module is used to install vibration acceleration sensors at the break points of the GIS to acquire vibration signals and displacement sensors at the operating mechanism to acquire stroke curves; based on the temporal correlation characteristics of the vibration signals and stroke curves, the number of complete action timing events during the opening and closing operations of the GIS is determined. The installation location filtering module is used to establish a rigid body dynamics model of a multi-break GIS to simulate the opening and closing operation of the GIS. The installation location of the vibration acceleration sensor is mapped to the location of each measuring point in the rigid body dynamics model, and the number of complete action timing feedback events during the simulation is obtained. When the number of complete action timing feedback events is equal to the number of complete action timing events, the measuring point location is the optimal installation location of the vibration acceleration sensor. The vibration acquisition delay module is used during GIS opening and closing operations. It uses the time of the first impact between the moving contact and the stationary contact, which is collected by the displacement sensor, as the reference time. The time of the first impact of the maximum peak acceleration of each vibration acceleration sensor is used as the calibration time. The difference between the calibration time and the reference time is used as the vibration acquisition delay of each vibration acceleration sensor. The timing alignment module is used to determine the time interval of each action sequence during the GIS opening and closing operation based on the stroke curves collected in real time by each displacement sensor. The corresponding acquisition delay is superimposed on the time interval of each action sequence to obtain the performance time interval of each action sequence. Based on the vibration signal collected in real time by the vibration acceleration sensor at the optimal installation position, the performance time interval of each vibration signal is marked within the performance time interval of each action sequence.

[0012] The installation location filtering module is also used if the number of complete action timing feedback events is greater than the number of complete action timing events. If the value is multiplied by a factor of 1, then the current measurement point location is determined to meet the data acquisition requirements. The value is an integer not less than 1; if the number of complete action timing feedback events is not greater than the number of complete action timing events. If the current measurement point location does not meet the data acquisition requirements, the position of each measurement point in the rigid body dynamics model is adjusted until the measurement point that meets the data acquisition requirements is selected as the preferred installation position for the vibration acceleration sensor. After adjusting the vibration acceleration sensor to the preferred installation position on the GIS, the number of complete action timing events during the GIS opening and closing operation is updated based on the time-series correlation characteristics between the vibration signal collected in real time by the vibration acceleration sensor at the preferred installation position and the stroke curve collected in real time by the displacement sensor installed at the operating mechanism. When the updated number of complete action timing events is equal to the number of complete action timing feedback events, the measurement point location is selected as the optimal installation position for the vibration acceleration sensor.

[0013] The present invention is also a terminal, including a processor and a storage medium; the storage medium is used to store instructions; the processor is used to perform operations according to the instructions to execute the steps of the method.

[0014] The present invention is also a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of the method.

[0015] The beneficial effects of this invention are as follows: Compared with the prior art, it at least includes the following: The rigid body dynamics model based on multi-fracture GIS proposed in this invention forms a scientific theoretical method for the optimal installation of vibration acceleration sensors, rather than a simple summary of vibration characteristics, thus eliminating the need for redundant acquisition and measurement using traditional optimal random point selection methods; it overcomes the shortcomings of existing technologies that only focus on the signal characteristics of vibration signal acquisition points within the acquisition time interval and ignore the transmission time of vibration waves from the main vibration source to the acquisition points in large GIS cavities, thus failing to directly utilize the vibration signals of the acquisition points to effectively match the mechanical state (mechanical characteristics) within the vacuum interrupter; it solves the problem that existing vibration and mechanical characteristic acquisition devices often lack a safe cyclic active triggering function, causing researchers to need to trigger the acquisition samples sequentially to obtain a large number of data samples required for training large models; the method proposed in this invention improves the research efficiency and safety of array-type vibration and mechanical characteristics of multi-fracture GIS. Attached Figure Description

[0016] Figure 1 This is a flowchart of the method for simultaneous acquisition of array-type vibration and mechanical characteristics of multi-fracture GIS proposed in this invention; Figure 2 This is the vibration signal timing waveform of a circuit breaker with a spring operating mechanism in an embodiment of the present invention. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of this invention. The embodiments described in this application are merely some embodiments of this invention, and not all embodiments. Based on the spirit of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this invention.

[0018] This invention proposes a method for simultaneous acquisition of array-type vibration and mechanical characteristics of multi-fracture GIS. The multi-fracture GIS includes multiple fractures, and each fracture corresponds to an operating mechanism. like Figure 1 As shown, the method includes: Step 1: Install vibration acceleration sensors at each break point to collect vibration signals, and install displacement sensors on each operating mechanism to collect stroke curves; based on the temporal correlation characteristics of vibration signals and stroke curves, determine the number of complete action sequence events during GIS opening and closing operations.

[0019] Specifically, step 1 includes: Step 1.1, preliminary installation of oscillation acceleration sensors and displacement sensors, including: installing vibration acceleration sensors at each break point and installing displacement sensors on each operating mechanism; In this system, the number of fractures in a multi-fracture GIS is n, the number of vibration acceleration sensors is not less than 2n, and the number of displacement sensors is not less than n; the initial number of sensors 'a' is defined as follows:

[0020] With the vertical axis perpendicular to the ground as the horizontal axis, a pair of vibration acceleration sensors need to be installed near each pair of fracture surfaces in both the horizontal and vertical directions to record the mechanical state of the actual movement of the fracture surfaces. At least 2n vibration acceleration sensors need to be installed. A displacement sensor is installed on each of the key mechanisms at different fracture surfaces. At least n displacement sensors need to be installed. The key mechanisms include, but are not limited to, the arc-extinguishing chamber and the connecting rod.

[0021] Specifically, a vibration acceleration sensor is used to capture stress waves generated by the impact, friction, and release of various components during the movement of the mechanism. In this embodiment, a high-frequency response acceleration sensor with a frequency response range of 0.5Hz to 10kHz is selected to capture rich impact details. With the vertical axis perpendicular to the ground as the longitudinal axis and the horizontal axis parallel to the ground as the transverse axis, a pair of vibration acceleration sensors are installed at each fracture point in both the transverse and longitudinal directions to record the mechanical state of the actual movement of the fracture point. Specifically, displacement sensors are arranged to accurately measure the linear displacement of the moving contact over time to obtain a travel-time curve. Typically, GIS systems will reserve an installation interface or provide a dedicated displacement sensor installation location. The motion axis of the sensor must be strictly parallel to the motion direction of the moving contact to accurately reflect the actual travel. In this embodiment, the displacement sensor between the moving and stationary contacts is installed on the key mechanism, with one displacement sensor placed on each side of the different break points.

[0022] Step 1.2: Simultaneously acquire vibration signals and stroke curves of multi-break GIS via multiple channels; Vibration signals provide internal, local, and high-frequency fault information (such as slight jamming or loose parts), while displacement signals provide overall, macroscopic, and kinematic performance assessments (such as velocity and time). The combination of the two enables a panoramic diagnosis from microscopic to macroscopic levels. Moreover, the same trigger signal (usually a pulse command provided to the trip coil) is used to synchronously start the data acquisition of all vibration and displacement sensors.

[0023] Step 1.3: The collected vibration signals and stroke curves are transmitted to the host computer for automatic storage; Step 1.4: The host computer performs time-series correlation between the vibration signal and the stroke curve to determine the action sequence and time interval when the multi-break GIS performs closing or opening operations, and records the number of complete action sequence events in the multi-break GIS. Among them, an event that includes the time interval of all action sequences is considered a complete action sequence event.

[0024] Vibration events at different sampling points and contact displacement positions can be preliminarily correlated in time. The following uses the vibration characteristics of a circuit breaker with a spring operating mechanism to illustrate the temporal correlation between vibration timing and contact displacement. Figure 2 As shown, Time interval: The closing coil of the control circuit is energized, the iron core is subjected to electromagnetic force, and the electromagnetic force gradually strengthens; Time interval: As the electromagnetic force reaches the threshold, the iron core strikes the closing switch, and the energy storage spring releases energy. At this time, the contact stroke in the arc-extinguishing chamber has not changed. Time interval: The energy released by the spring drives the linkage mechanism to move, pushing the linkage mechanism to the limit position, and the moving contact begins to accelerate. Time interval: After the moving contact and the stationary contact make initial contact, the moving contact begins to decelerate. At the same time, due to the influence of the violent vibration wave, most of the components of the circuit breaker are affected by the vibration wave and begin to vibrate violently. As time increases, the vibration energy gradually disappears. An event that includes the above four time intervals is considered a complete action sequence event.

[0025] Step 2: Establish a rigid body dynamics model of the multi-break GIS to simulate the opening and closing operation of the GIS. The installation position of the vibration acceleration sensor is mapped to the position of each measuring point in the rigid body dynamics model. Obtain the number of complete action timing feedback events during the simulation. When the number of complete action timing feedback events is equal to the number of complete action timing events, the measuring point position is taken as the optimal installation position of the vibration acceleration sensor.

[0026] Specifically, step 2 includes: Step 2.1: The host computer preprocesses the vibration signals from the multiple acquisition points in Step 1 to extract vibration characteristic quantities. Preprocessing includes, but is not limited to, filtering and normalization. Vibration characteristics include, but are not limited to, time-domain characteristics, frequency-domain characteristics, and energy distribution.

[0027] Step 2.2: Establish a rigid body dynamics model of the multi-fracture GIS based on vibration characteristic quantities and correct its modal performance; Step 2.3: Map the installation position of the vibration acceleration sensor in Step 1 to each measuring point in the corrected rigid body dynamics model; when using the corrected rigid body dynamics model to simulate the closing or opening operation of a multi-break GIS, obtain the number of complete action timing feedback events during the simulation. After clarifying the timing sequence of each action in the multi-break GIS in step 1.4, vibration acceleration sensors are placed near the critical mechanisms acting within the time interval of the action sequence along the direction of motion. Determining the action sequence ensures that the mechanical state of the critical mechanisms is effectively located and detected, while simultaneously detecting the motion state of the contacts. The number of complete action sequence feedback events during simulation is recorded. Adjust the position, angle, and other parameters of the sensor measuring points in the simulation model. If the number of complete action sequence events in a multi-break GIS is... Considering that some measuring points are far from the location of the main event and cannot fully perceive the complete event, the feedback scaling factor is defined as follows: To meet the requirements of timing feedback The following requirements must be met:

[0028] If the number of complete action timing feedback events is greater than the number of complete action timing events. If the value is multiplied by a factor of 1, then the current measurement point location is determined to meet the data acquisition requirements. The value is an integer not less than 1; if the number of complete action timing feedback events is not greater than the number of complete action timing events. If the value is multiplied by a factor of 1, it is determined that the current measuring point position does not meet the data acquisition requirements. The positions of each measuring point in the rigid body dynamics model are then adjusted until the data acquisition requirements are met. The corresponding measuring point is then used as the preferred installation position for the vibration acceleration sensor.

[0029] Step 3: After adjusting the vibration acceleration sensor to the preferred installation position on the GIS, based on the time-series correlation characteristics between the vibration signal collected in real time by the vibration acceleration sensor at the preferred installation position and the stroke curve collected in real time by the displacement sensor installed at the operating mechanism, update the number of complete action timing events during the GIS opening and closing operation; when the updated number of complete action timing events is equal to the number of complete action timing feedback events, the measuring point position is taken as the optimal installation position of the vibration acceleration sensor.

[0030] After the sensors are rearranged according to the obtained preferred installation positions, the secondary control circuit of the GIS is powered on to start executing the closing and opening operations; through the secondary circuit triggering method, the acquisition of vibration signals and stroke curves is strictly synchronized with the opening / closing commands; multi-channel synchronous control high-speed acquisition, digital-analog signal A / D conversion and transmission to the host computer for automatic storage; after multi-channel synchronous acquisition of vibration signals and stroke curves, the data is transmitted to the host computer for automatic storage.

[0031] If the contact signal is detected and the program in the acquisition device is set to start automatic cyclic triggering, return to step 3 to perform the opening or closing operation. If automatic cyclic triggering is not set, the acquisition ends. The conditions for automatic cyclic triggering to work normally are that the contact has completed the closing or opening operation and the micro-vibration wave of the multi-break GIS has ended (the threshold of the micro-vibration wave is adjustable). This time, the number of closing / opening operations is required to be greater than 1. Multiple real-time acquisitions through automatic cyclic triggering are beneficial to improving data reliability and accuracy.

[0032] After adjusting the vibration acceleration sensor and displacement sensor according to the preferred installation location, the number of complete action sequence events during GIS opening and closing operations is updated based on the time-series correlation characteristics of the real-time collected vibration signals and stroke curves. Because the installation locations have been filtered and optimized, the number of complete action timing events will increase, i.e. > .

[0033] If the number of complete events in the updated action timing sequence is still not greater than the number of measurement points, then adjust the installation positions of the vibration acceleration sensor and displacement sensor and repeat steps 1 and 2.

[0034] Step 4: During the GIS opening and closing operation, the time of the first impact between the moving contact and the stationary contact, as collected by the displacement sensor, is used as the reference time. During GIS circuit breaker opening and closing operations, the time of the first peak acceleration of each vibration acceleration sensor is the calibration time. , to calibrate time Compared with the reference time The difference is used as the vibration acquisition delay of each vibration acceleration sensor.

[0035] The reference time is the instant when the moving contact moves to the point of first impact with the stationary contact. Since this action event has obvious action timing at the optimal installation position selected above, the time at the point where the action event occurs at different acquisition points is set as the calibration time. The difference between the reference time and the calibration time is the vibration acquisition delay of each displacement sensor.

[0036] Step 5: Based on the stroke curves collected in real time by each displacement sensor, determine the time interval of each action sequence during the GIS opening and closing operation. Superimpose the corresponding vibration acquisition delay on the time interval of each action sequence to obtain the performance time interval of each action sequence. According to the vibration signal collected in real time by the vibration acceleration sensor at the optimal installation position, mark the performance time interval of each vibration signal within the performance time interval of each action sequence.

[0037] This invention conducts preliminary deduction at the sampling points with a feedback scaling factor of 1, combined with the contact stroke collected by the displacement sensor, to obtain the action timing of the multi-fracture GIS. Then, based on the obtained vibration transmission acquisition delay at each sampling point, the key timing start time of each sampling point is marked at "time zero plus vibration transmission acquisition delay". Based on the results of the preliminary deduction, the vibration timing time interval of each sampling point is marked on the vibration signal at different sampling points, thereby realizing multi-scale superposition deduction to clarify the vibration timing.

[0038] This invention also proposes an array-type simultaneous vibration and mechanical characteristic acquisition device for multi-fracture GIS, comprising: The acquisition module is used to install vibration acceleration sensors at the break points of the GIS to acquire vibration signals and displacement sensors at the operating mechanism to acquire stroke curves; based on the temporal correlation characteristics of the vibration signals and stroke curves, the number of complete action timing events during the opening and closing operations of the GIS is determined. The installation location filtering module is used to establish a rigid body dynamics model of a multi-break GIS to simulate the opening and closing operation of the GIS. The installation location of the vibration acceleration sensor is mapped to the location of each measuring point in the rigid body dynamics model, and the number of complete action timing feedback events during the simulation is obtained. When the number of complete action timing feedback events is equal to the number of complete action timing events, the measuring point location is the optimal installation location of the vibration acceleration sensor. The vibration acquisition delay module uses the time of the first impact between the moving contact and the stationary contact as the reference time during GIS opening and closing operations; during GIS opening and closing operations, the time of the first maximum peak acceleration of each vibration acceleration sensor is used as the calibration time, and the difference between the calibration time and the reference time is used as the vibration acquisition delay of each vibration acceleration sensor. The timing alignment module is used to determine the time interval of each action sequence during the GIS opening and closing operation based on the stroke curves collected in real time by each displacement sensor. The corresponding acquisition delay is superimposed on the time interval of each action sequence to obtain the performance time interval of each action sequence. Based on the vibration signal collected in real time by the vibration acceleration sensor at the optimal installation position, the performance time interval of each vibration signal is marked within the performance time interval of each action sequence.

[0039] This disclosure can be a system, method, and / or computer program product. A computer program product may include a computer-readable storage medium having computer-readable program instructions loaded thereon for causing a processor to implement various aspects of this disclosure.

[0040] Computer-readable storage media can be tangible devices capable of holding and storing instructions for use by an instruction execution device. Computer-readable storage media can be, for example—but not limited to—electrical storage devices, magnetic storage devices, optical storage devices, electromagnetic storage devices, semiconductor storage devices, or any suitable combination of the foregoing. More specific examples (a non-exhaustive list) of computer-readable storage media include: portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), static random access memory (SRAM), portable compact disc read-only memory (CD-ROM), digital multifunction disc (DVD), memory sticks, floppy disks, mechanical encoding devices, such as punch cards or recessed protrusions storing instructions thereon, and any suitable combination of the foregoing. The computer-readable storage media used herein are not to be construed as transient signals themselves, such as radio waves or other freely propagating electromagnetic waves, electromagnetic waves propagating through waveguides or other transmission media (e.g., light pulses through fiber optic cables), or electrical signals transmitted through wires.

[0041] The computer-readable program instructions described herein can be downloaded from computer-readable storage media to various computing / processing devices, or downloaded via a network, such as the Internet, local area network, wide area network, and / or wireless network, to an external computer or external storage device. The network may include copper transmission cables, fiber optic transmission, wireless transmission, routers, firewalls, switches, gateway computers, and / or edge servers. A network adapter card or network interface in each computing / processing device receives the computer-readable program instructions from the network and forwards them to the computer-readable storage media in the respective computing / processing device.

[0042] Computer program instructions used to perform the operations of this disclosure may be assembly instructions, instruction set architecture (ISA) instructions, machine instructions, machine-dependent instructions, microcode, firmware instructions, status setting data, or source code or object code written in any combination of one or more programming languages, including object-oriented programming languages ​​such as Smalltalk, C++, etc., and conventional procedural programming languages ​​such as the "C" language or similar programming languages. The computer-readable program instructions may execute entirely on the user's computer, partially on the user's computer, as a standalone software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In cases involving a remote computer, the remote computer may be connected to the user's computer via any type of network—including a local area network (LAN) or a wide area network (WAN)—or may be connected to an external computer (e.g., via the Internet using an Internet service provider). In some embodiments, electronic circuitry, such as programmable logic circuitry, field-programmable gate arrays (FPGAs), or programmable logic arrays (PLAs), is personalized by utilizing the status information of the computer-readable program instructions to implement various aspects of this disclosure.

[0043] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the specific implementation of the present invention. Any modifications or equivalent substitutions that do not depart from the spirit and scope of the present invention should be covered within the protection scope of the claims of the present invention.

Claims

1. A method for simultaneous sequential acquisition of array-type vibration and mechanical characteristics of multi-fracture GIS, characterized in that, include: Vibration acceleration sensors are installed at the break points of the GIS to collect vibration signals, and displacement sensors are installed at the operating mechanism to collect stroke curves; based on the temporal correlation characteristics of the vibration signals and stroke curves, the number of complete action timing events during the opening and closing operations of the GIS is determined. A rigid body dynamics model of a multi-break GIS is established to simulate the opening and closing operation of the GIS. The installation position of the vibration acceleration sensor is mapped to the position of each measuring point in the rigid body dynamics model. The number of complete action timing feedback events during simulation is obtained. When the number of complete action timing feedback events is equal to the number of complete action timing events, the measuring point position is taken as the optimal installation position of the vibration acceleration sensor. During GIS opening and closing operations, the time of the first impact between the moving contact and the stationary contact, collected by the displacement sensor, is used as the reference time; the time of the first impact of the maximum peak acceleration of each vibration acceleration sensor is used as the calibration time, and the difference between the calibration time and the reference time is used as the vibration acquisition delay of each vibration acceleration sensor. Based on the stroke curves collected in real time by each displacement sensor, the time intervals of each action sequence during the GIS opening and closing operation are determined. The corresponding vibration transmission acquisition delay is superimposed on the time intervals of each action sequence to obtain the performance time interval of each action sequence. Based on the vibration signal collected in real time by the vibration acceleration sensor at the optimal installation position, the performance time interval of each vibration signal is marked within the performance time interval of each action sequence.

2. The method for simultaneous sequential acquisition of array-type vibration and mechanical characteristics of multi-fracture GIS according to claim 1, characterized in that, The number of breaks in a multi-break GIS is n, and the number of vibration acceleration sensors installed is not less than 2n, and the number of displacement sensors is not less than n.

3. The method for simultaneous sequential acquisition of array-type vibration and mechanical characteristics of multi-fracture GIS according to claim 1, characterized in that, Based on the temporal correlation characteristics of vibration signals and stroke curves, the action sequence and time interval of GIS opening and closing operations are determined, and the number of complete action sequence events in multi-break GIS is recorded. Among them, the event that includes the time interval of all action sequences is the complete action sequence event.

4. The method for simultaneous sequential acquisition of array-type vibration and mechanical characteristics of multi-fracture GIS according to claim 1, characterized in that, The host computer preprocesses the vibration signal to extract vibration characteristic quantities; based on the vibration characteristic quantities, a rigid body dynamic model of the multi-fracture GIS is established and the modal performance is corrected. The installation positions of the vibration acceleration sensors are mapped to various measuring points in the corrected rigid body dynamics model; when using the corrected rigid body dynamics model to simulate the opening and closing operation of GIS, the number of complete feedback events of the action timing during the simulation is obtained.

5. The method for simultaneous sequential acquisition of array-type vibration and mechanical characteristics of multi-fracture GIS according to claim 4, characterized in that, If the number of complete action timing feedback events is greater than the number of complete action timing events. If the value is multiplied by a factor of 1, then the current measurement point location is determined to meet the data acquisition requirements. The value is an integer not less than 1; if the number of complete action timing feedback events is not greater than the number of complete action timing events. If the value is multiplied by a factor of 1, it is determined that the current measuring point position does not meet the data acquisition requirements. The positions of each measuring point in the rigid body dynamics model are then adjusted until the data acquisition requirements are met. The corresponding measuring point is then used as the preferred installation position for the vibration acceleration sensor.

6. The method for simultaneous sequential acquisition of array-type vibration and mechanical characteristics of multi-fracture GIS according to claim 5, characterized in that, After adjusting the vibration acceleration sensor to the preferred installation position on the GIS, based on the time-series correlation characteristics between the vibration signal collected in real time by the vibration acceleration sensor at the preferred installation position and the stroke curve collected in real time by the displacement sensor installed at the operating mechanism, the number of complete action timing events during the opening and closing operation of the GIS is updated; when the updated number of complete action timing events is equal to the number of complete action timing feedback events, the measuring point position is taken as the optimal installation position of the vibration acceleration sensor.

7. A multi-fracture GIS array-type simultaneous vibration and mechanical characteristic acquisition device, characterized in that, include: The acquisition module is used to install vibration acceleration sensors at the break points of the GIS to acquire vibration signals and displacement sensors at the operating mechanism to acquire stroke curves; based on the temporal correlation characteristics of the vibration signals and stroke curves, the number of complete action timing events during the opening and closing operations of the GIS is determined. The installation location filtering module is used to establish a rigid body dynamics model of a multi-break GIS to simulate the opening and closing operation of the GIS. The installation location of the vibration acceleration sensor is mapped to the location of each measuring point in the rigid body dynamics model, and the number of complete action timing feedback events during the simulation is obtained. When the number of complete action timing feedback events is equal to the number of complete action timing events, the measuring point location is the optimal installation location of the vibration acceleration sensor. The vibration acquisition delay module is used during GIS opening and closing operations. It uses the time of the first impact between the moving contact and the stationary contact, which is collected by the displacement sensor, as the reference time. The time of the first impact of the maximum peak acceleration of each vibration acceleration sensor is used as the calibration time. The difference between the calibration time and the reference time is used as the vibration acquisition delay of each vibration acceleration sensor. The timing alignment module is used to determine the time interval of each action sequence during the GIS opening and closing operation based on the stroke curves collected in real time by each displacement sensor. The corresponding acquisition delay is superimposed on the time interval of each action sequence to obtain the performance time interval of each action sequence. Based on the vibration signal collected in real time by the vibration acceleration sensor at the optimal installation position, the performance time interval of each vibration signal is marked within the performance time interval of each action sequence.

8. The array-type simultaneous vibration and mechanical characteristic acquisition device for multi-fracture GIS according to claim 7, characterized in that, The installation location filtering module is also used if the number of complete action timing feedback events is greater than the number of complete action timing events. If the value is multiplied by a factor of 1, then the current measurement point location is determined to meet the data acquisition requirements. The value is an integer not less than 1; if the number of complete action timing feedback events is not greater than the number of complete action timing events. If the current measurement point location does not meet the data acquisition requirements, the position of each measurement point in the rigid body dynamics model is adjusted until the measurement point that meets the data acquisition requirements is selected as the preferred installation position for the vibration acceleration sensor. After adjusting the vibration acceleration sensor to the preferred installation position on the GIS, the number of complete action timing events during the GIS opening and closing operation is updated based on the time-series correlation characteristics between the vibration signal collected in real time by the vibration acceleration sensor at the preferred installation position and the stroke curve collected in real time by the displacement sensor installed at the operating mechanism. When the updated number of complete action timing events is equal to the number of complete action timing feedback events, the measurement point location is selected as the optimal installation position for the vibration acceleration sensor.

9. A terminal, comprising a processor and a storage medium; characterized in that: The storage medium is used to store instructions; The processor is configured to operate according to the instructions to perform the steps of the method according to any one of claims 1-6.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that, When executed by a processor, the program implements the steps of the method according to any one of claims 1-6.

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