TWI668597B - Partial discharge signal capture system - Google Patents

Abstract

The invention discloses a partial discharge signal capturing system, which is suitable for sensing a partial discharge signal of an object, thereby generating analysis data. The partial discharge signal capture system includes at least one high frequency current sensor that generates an inductive signal according to a change in a magnetic field around the object to be tested; a field programmable gate array electrically connected with the high frequency current sensor; The programmable gate array forms an electrical connection, transmits a control signal to the field programmable gate array to modify the program, and displays at least one of the waveform diagram, the Fourier transformation diagram, the phase decomposition diagram, and the time frequency diagram according to the analysis data. Human interface system.

Description

Partial discharge signal capture system

The present invention relates to a signal capture system, and more particularly to a partial discharge signal capture system.

Under the rapid development of today's high-tech industry, stable power supply has become an increasingly important issue. Among them, the performance and status of power equipment is an important factor in maintaining the normal operation of the power system. If there is no power failure, it will be powered off. It has brought huge losses to the technology industry, so further sensing the performance and monitoring methods of power equipment is receiving more and more attention.

Partial discharge usually occurs in the interior of the insulator or on the surface of the electric field. It will cause a chemical reaction to erode the insulating material to deteriorate it, and cause a discharge effect in the concentrated area of the electric field. Eventually, the insulating material will collapse and cause damage to the instrument and endanger the safety of the user.

Generally, the off-line partial discharge detection must be performed when the equipment is stopped, and its practicality is slightly insufficient, and the equipment interruption during the detection process also causes losses to the process. To improve this disadvantage, the inventor The invention discloses a system for detecting partial discharge of a test object without interrupting the operation of the device, and cooperates with various analysis tools in the invention to detect the partial discharge signal, thereby further increasing the accuracy of the judgment.

In view of the above conventional problems, it is an object of the present invention to provide a partial discharge signal capturing system.

According to the above object, the present invention provides a partial discharge signal capturing system, which is suitable for sensing a partial discharge signal of an object to be tested, thereby generating analysis data, which comprises at least one high frequency current sensor according to the object to be tested. The surrounding magnetic field changes to generate an inductive signal, form an electrical connection with the high-frequency current sensor, execute a configured program, analyze the inductive signal to obtain a field programmable gate array of analytical data, and a field programmable gate The array forms an electrical connection, transmits a control signal to the field programmable gate array to modify the program, and displays at least one of the waveform diagram, the Fourier transformation diagram, the phase decomposition diagram, and the time frequency diagram of the illustrated waveform according to the analysis data. Interface system.

Preferably, the human-machine interface system further includes a database, and the human-machine interface system generates different control signals according to different instruction modes through a plurality of instruction modes stored in the database.

Preferably, the plurality of command modes include a frequency modification mode, a waveform modification mode, and a trigger signal modification mode.

Preferably, the partial discharge signal capture system of the present invention further comprises a communication interface electrically connected between the human interface system and the programmable gate array, and converts the analysis data and the control signal into the same data format through the communication interface.

Preferably, the human-machine interface system is a communication hardware including a computer and a mobile device that conforms to the communication protocol and data transmission format of the received signal.

Preferably, the human-machine interface system further comprises a comparison unit, which compares the standard material stored in the comparison unit with the analysis data to generate a comparison result, and the human-machine interface system displays the data and the comparison data. The result is at least one of a waveform diagram, a Fourier transform diagram, a phase decomposition diagram, and a time-frequency diagram.

Preferably, the partial discharge signal capture system of the present invention further includes an input module electrically connected between the high frequency current sensor and the field programmable gate array, and the input module further comprises: receiving a sense of high frequency current The signal interface of the sensor's sensing signal.

Preferably, the control signal includes a modification command that changes the frequency range of the high frequency current sensor sensing.

Preferably, the human-machine interface system further comprises a comparison unit, wherein the comparison unit stores the standard data to compare the analysis data to generate a comparison result, so as to display the waveform diagram, which is represented by the analysis data and the comparison result, At least one of a Fourier transform graph, a phase decomposition map, and a time frequency map.

The partial discharge signal capture system of the present invention described above modifies the execution program of the field programmable gate array by the human interface, thereby sensing the partial discharge signal of the object to be tested and comparing it with the standard situation. Users can use this to assess the operational risk of the equipment without interrupting the operation of the equipment.

10‧‧‧Partial Discharge Signal Capture System

11‧‧‧High frequency current sensor

111‧‧‧Induction signal

112‧‧‧Transport interface

120‧‧‧Field programmable gate array

121‧‧‧Analytical data

122‧‧‧Control signal

130‧‧‧Human Machine Interface System

131‧‧‧Database

132‧‧‧ comparison unit

140‧‧‧Input module

141‧‧‧ Signal Interface

142‧‧‧ preamplifier

143‧‧‧Signal Converter

150‧‧‧Communication interface

S601~S607‧‧‧Steps

Figure 1 is a block diagram of a first embodiment of a partial discharge signal capture system of the present invention.

Figure 2 is a block diagram of a second embodiment of a partial discharge signal capture system of the present invention.

Figure 3 is a block diagram of a third embodiment of a partial discharge signal capture system of the present invention.

Figure 4 is a block diagram of a fourth embodiment of the partial discharge signal capture system of the present invention.

Figure 5 is a block diagram of a fifth embodiment of the partial discharge signal capture system of the present invention.

Figure 6 is a flow chart of the human interface of the partial discharge signal capture system of the present invention.

Please refer to FIG. 1 , which is a block diagram of a first embodiment of a partial discharge signal capture system of the present invention. As shown, the partial discharge signal capture system 10 of the present invention includes at least one high frequency current sensor 110, a field programmable gate array 120, and a human interface system 130. The partial discharge signal capture system of the present invention is suitable for sensing a partial discharge of a test object, and is analyzed and presented on the human-machine interface system 130 in real time.

The field programmable gate array 120 is electrically connected between the high frequency current sensor 110 and the human interface system 130. The high frequency current sensor 110 senses a magnetic field change of the object to be tested to generate an inductive signal 111. And transmitting the sensing signal 111 to the field programmable gate array 120; the user operates the human interface system 130 to transmit a control signal 122 to the field programmable gate array 120 to change the field programmable The program executed by the gate array 120; the field programmable gate array 120 analyzes the sensing signal 111 according to the executed program, transmits the analysis data 121 to the human interface system 130, and further, the human interface system 130 receives the data according to the The analysis data 121 presents the corresponding display content.

The field programmable gate array 120 includes different signal processing modules, and determines, according to the control signal 122, the module transmitted by the sensing signal 111 and analyzes the data according to the control signal 122, wherein at least the sensor signal is further calculated and converted, and the phase is converted. Decomposed, or divided into different computing modules of the analysis data 121 of the time-frequency distribution data.

Further, the human interface system 130 optionally displays at least one of a waveform diagram, a Fourier transform diagram, a phase decomposition map, and a time frequency map according to the received analysis data 121.

Please refer to FIG. 2, which is a block diagram of a second embodiment of a partial discharge signal capture system of the present invention, which differs from the first embodiment of the partial discharge signal capture system of the present invention in a human interface system 130. Further comprising a database 131, wherein a plurality of instruction modes are stored in the database, so that when the user operates the human interface system 130, clicking or inputting the corresponding instruction mode or each instruction mode code is generated according to each instruction mode. Corresponding control signals 122 are transmitted and control signals 122 are transmitted to the field programmable gate array 120.

Furthermore, the high-frequency current sensor 110 and the field programmable gate array 120 are respectively electrically connected through corresponding ports; the field programmable gate array 120 and the human-machine interface system 130 correspond to at least one of the corresponding The communication interface forms an electrical connection.

Each command mode includes, but is not limited to, for example, selecting a connection between the field programmable gate array 120 and the high frequency current sensor 110, and controlling the field programmable gate array 120 to be electrically connected to the human interface system 130. The communication interface or the scanning communication interface, the channel selection mode selected in the channel of the human interface system 130, the trigger level selection mode, the selection including the waveform analysis, the Fourier transform analysis, the phase decomposition analysis, and the time frequency analysis are at least one analysis function mode. And controlling whether the human interface system 130 stores the received analysis data 121.

Please refer to FIG. 3, which is a block diagram of a third embodiment of a partial discharge signal capture system of the present invention, which differs from the first embodiment of the partial discharge signal capture system of the present invention in that Further, a communication interface 150 is further disposed between the human interface system 130 and the field programmable gate array 120. The control signal sent by the human interface system 130 and the field programmable gate array 120 are sent through the communication interface. Analytical data is converted to the same data format.

Further, the same data format refers to converting the received signal packet into at least one of the following formats: beginning of the data: at the beginning of receiving the identified packet data, and receiving data The system recognizes that the beginning of the data does not coincide with the beginning of the expected data, and will determine that the received packet data packet is damaged, and further delete the data.

Data number: It is provided by the receiving end to identify what kind of data, and the received packet computing format is further allocated by different numbers.

Data verification: It is used to enable the receiving end to confirm whether the received data packet has been transmitted, so that the receiving end can further perform subsequent actions.

Data length: used to confirm the length of the received data packet. For example, if the transmitted packet data is time-frequency analysis data and phase decomposition data, the data length will be changed according to the analyzed data format. The length data of the data in the packet is used to confirm the size of the received packet data.

The communication interface 150 of the present invention may be an RS-232 communication interface.

Please refer to FIG. 4, which is a block diagram of a fourth embodiment of a partial discharge signal capture system of the present invention. The difference from the third embodiment of the partial discharge signal capture system of the present invention is that the human interface system 130 further includes a comparison unit 132 that transmits the standard data stored in the comparison unit 132. The received analysis data 121 is compared, and the comparison result is displayed in the human interface system 130. The content displayed by the comparison result is a waveform diagram, a Fourier transformation diagram, and a phase respectively displayed through the analysis data and the standard data. The exploded view and the time-frequency map are at least one of the same coordinate system By.

Please refer to FIG. 5, which is a block diagram of a fifth embodiment of a partial discharge signal capture system of the present invention. The difference from the third embodiment of the partial discharge signal capture system of the present invention is that it further includes an input module 140 electrically coupled between the high frequency current sensor 110 and the field programmable gate array 120, the input mode The group 140 includes at least one signal interface 141 for receiving the sensing signals from the high frequency current sensor, at least one preamplifier 142, and each preamplifier 142 is electrically connected to the corresponding signal interface 141 and the field. Between the programmed gate arrays 120, the sensing signals 111 received by the signal interface 141 are amplified to a specified multiple by the preamplifiers 142, and then the sensing signals 111 are transmitted to the field programmable gate array 120.

Further, the input module 140 further includes a signal converter 143 electrically connected between each preamplifier 142 and the field programmable gate array 120, and further converts the amplified inductive signal into a device through the signal converter 143. A digital signal of the number of bits is designated and the converted sensing signal is transmitted to the field programmable gate array 120.

The preamplifier 142 amplifies the inductive signal by a magnification of 10 to 100 times.

The high-frequency current sensor has at least one transmission interface 112. Each transmission interface 112 corresponds to each signal interface 141 in the input module 140, and the high-frequency current sensor transmits to the input module 140 through the transmission interface 112. Inductive signal 111 of different phases.

According to the partial discharge signal capturing system 10 of the present invention, the high frequency current sensor 110 is a plurality of combined components, and the components are combined to form a hollow annular structure.

The partial discharge signal capture system 10 in accordance with the present invention, wherein the high frequency current sensor 110 is a sense probe that senses changes in the magnetic field over a fixed radius of the endpoint.

Partial discharge signal capture system 10 in accordance with the present invention, wherein human-machine interface system 130 Devices that conform to the communication protocol and data transmission format of the received signals include computers, mobile devices, and the like.

Referring to FIG. 6, which is an operational flowchart of the human interface system 130 of the partial discharge signal capture system 10 of the present invention, the method includes the following steps: Step S601: Initializing the human interface system 130

Step S602: setting a trigger mode and an analysis function in the human interface system 130

Step S603: The human interface system 130 transmits a control signal to the field controllable gate array 20.

Step S604: The human interface system 130 receives the analysis data 121.

Step S605: The human-machine interface system 130 performs data determination, and further inputs a data storage instruction.

Step S606 is performed, and if the display drawing view is input, the process proceeds to step S607.

Step S606: storing the analysis data 121

Step S607: displaying a graphic icon on the human interface system 130

In summary, the partial discharge signal capturing system of the present invention does not need to stop the operation of the device, that is, the energy is measured to change the magnetic field of the object to be tested, and the high-frequency current sensor is used to accurately capture the partial discharge signal of the object to be tested. Further, a plurality of data analysis tools are provided to analyze the characteristics of the partial discharge signals generated by the verification device, and the data analysis is performed to detect whether the partial discharge of the test object is in a safety specification, so as to facilitate immediate analysis by the user.

The above is intended to be illustrative only and not limiting. Any equivalent modifications or alterations to the spirit and scope of this creation shall be included in the scope of the appended patent application.

Claims (8)

A partial discharge signal capture system, configured to sense a partial discharge signal of an object to be tested, to generate analysis data, the system comprising: at least one high frequency current sensor, generating an inductive signal according to a change of a magnetic field of the object to be tested a field programmable gate array electrically connected to the high frequency current sensor, performing a configured program to analyze the sensing signal to obtain an analysis data; an input module electrically connected Between the high frequency current sensor and the field programmable gate array; a human interface system is electrically connected to the field programmable gate array, and the human interface system transmits a control signal to the field programmable Singing the array to modify the program, and displaying at least one of a waveform diagram, a Fourier transform diagram, a phase decomposition diagram, and a time frequency diagram according to the analysis data; and a communication interface, the communication interface is electrically connected to the Between the human interface system and the field programmable gate array, the analysis data and the control signal are converted into the same data format; wherein the same resource The format converts the received signal packet into the same format, including: beginning of the data: when the receiving end recognizes the beginning of the signal packet, and the receiving end recognizes that the beginning of the signal packet does not coincide with the beginning of the expected received data. , the received signal packet is determined to be corrupted, and the signal packet is deleted; The data number is provided by the receiving end to identify the type of the signal packet, and the operation format of the received signal packet is further allocated by different numbers; the data verification is used to enable the receiving end to confirm whether the received signal packet is received. After the transmission is completed, the receiving end further performs subsequent actions; the data length is used to confirm the received signal packet length, and when the transmitted signal data is a time frequency analysis data or a phase decomposition data, The data format analyzed changes the length of the data, and the receiving end uses the data length data in the signal packet to confirm the data size of the received signal packet; wherein the input module comprises: at least one signal interface, and the receiving is from An inductive signal of the high frequency current sensor; at least one preamplifier, each of the preamplifiers is electrically connected between the corresponding signal interface and the field programmable gate array, and the inductive signal is amplified to a specified multiple After transmitting an amplified inductive signal; a signal converter is electrically connected to each of the preamplifiers and the present It may be between a programmable gate array, for sensing the amplified signal into a digital signal of a specified number of bits. The partial discharge signal capture system of claim 1, wherein the human interface system further comprises a database, wherein the database stores a plurality of command modes, and the human interface system generates corresponding signals according to the command modes. The control signal. The partial discharge signal capture system of claim 2, wherein the plurality of command modes comprises a frequency modification mode, a waveform modification mode, and a trigger signal modification mode. The partial discharge signal capture system of claim 1, wherein the person The interface system further includes a comparison unit, wherein the comparison unit stores a standard data and the analysis data to generate a comparison result, wherein the human interface system is configured to include the analysis data and the comparison result. At least one of a waveform diagram, a Fourier transform diagram, a phase decomposition diagram, and a time-frequency diagram is shown. The partial discharge signal capture system of claim 1, wherein the high frequency current sensor is a hollow annular member. The partial discharge signal capturing system of claim 1, wherein the high frequency current sensor is a sensing probe. The partial discharge signal capture system of claim 1, wherein the high frequency current sensor has at least one transmission interface, and each of the transmission interfaces corresponds to each of the signal interfaces, and respectively transmits the sensing signals of different phases. . The partial discharge signal capture system of claim 1, wherein the human interface system is a communication protocol and a data transmission format conforming to the received signal, including: a computer and a mobile device.