WO2024011801A1 - 晶闸管电压监测板检测系统及方法 - Google Patents
晶闸管电压监测板检测系统及方法 Download PDFInfo
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/28—Testing of electronic circuits, e.g. by signal tracer
- G01R31/2832—Specific tests of electronic circuits not provided for elsewhere
- G01R31/2836—Fault-finding or characterising
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/28—Testing of electronic circuits, e.g. by signal tracer
- G01R31/2832—Specific tests of electronic circuits not provided for elsewhere
- G01R31/2834—Automated test systems [ATE]; using microprocessors or computers
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/28—Testing of electronic circuits, e.g. by signal tracer
- G01R31/2832—Specific tests of electronic circuits not provided for elsewhere
- G01R31/2836—Fault-finding or characterising
- G01R31/2843—In-circuit-testing
Definitions
- the present application relates to the technical field of electrical equipment detection, and in particular to a thyristor voltage monitoring board detection system and method.
- Converter valves are key equipment in DC transmission projects.
- the reliable operation of converter valves is crucial to DC transmission projects.
- Thyristors are among the converter valves.
- the basic unit of the converter valve in order to ensure the reliable operation of the converter valve, it is necessary to monitor the operating status of the thyristor. Therefore, each stage of thyristor needs to be equipped with a thyristor voltage monitoring board.
- the thyristor voltage monitoring board provides indication signals for thyristor triggering, shutdown and over-voltage, so that the power grid system can make corresponding control instructions.
- the thyristor voltage monitoring board has functions such as DC voltage equalization, forward voltage monitoring, reverse voltage monitoring, and thyristor BOD (Break Over Diode) voltage monitoring. If the thyristor voltage monitoring board does not work properly, the power grid system will be unable to monitor the operating status of the thyristor and issue correct control instructions. Therefore, the thyristor voltage monitoring board needs to be tested.
- the thyristor voltage monitoring board can only be tested before the thyristor voltage monitoring board is officially put into use or when the thyristor voltage monitoring board is faulty and repaired.
- the traditional technology method cannot predict the life of the thyristor voltage monitoring board, so it is impossible to avoid failures during the use of the thyristor voltage monitoring board.
- a thyristor voltage monitoring board detection system characterized in that it includes: a signal generating device connected to the input end of the monitoring board to be detected, and used to send a test signal of a function to be verified to the monitoring board to be detected; a collection device, and The signal generating device, the output end of the monitoring board to be detected, and multiple nodes to be detected inside the monitoring board to be detected are connected for receiving the test signal according to the test signal and the monitoring board to be detected.
- the working state of the monitoring board corresponds to the function to be verified, and the working state includes one of a positive voltage monitoring state, a negative voltage monitoring state, and a thyristor breakdown voltage monitoring state;
- a processor is connected to the acquisition device, and uses The health status of the monitoring board to be detected is determined based on the waveform signal of each node to be detected when the monitoring board to be detected is in the working state, and the parameters of the monitoring board to be detected.
- the collection device includes: a node switching module, including a plurality of signal input ports and a signal output port.
- the multiple signal input ports of the node switching module are respectively connected to the multiple signal input ports of the monitoring board to be detected.
- the nodes to be detected are connected in a one-to-one correspondence, and the control end of the node switching module is connected to the processor for sequentially conducting connections between each signal input port and the signal output port under the control of the processor.
- the photoelectric conversion module is connected to the output end of the monitoring board to be detected, and is used to convert the optical pulse signal output by the monitoring board to be detected into a feedback signal
- the waveform acquisition module is respectively connected to the signal generating device
- the signal output port of the node switching module is connected to the photoelectric conversion module, and is used to determine the working status of the monitoring board to be detected based on the test signal and the feedback signal, and obtain the waveform signal of the target node to be detected. , wherein the target node to be detected corresponds to the currently turned on signal input port.
- the waveform acquisition module is further configured to align and normalize the collected waveform signals of each node to be detected corresponding to the same working state of the monitoring board to be detected.
- the node switching module further includes: a plurality of filtering units, the plurality of filtering units are connected to the plurality of signal input ports in a one-to-one correspondence, and are used to process the waveforms input to the corresponding signal input ports. The signal is filtered.
- the signal generating device includes: a voltage source and a pulse generating module.
- the voltage source is connected to the power port of the monitoring board to be detected.
- the pulse generating module is connected to the power port of the monitoring board to be detected.
- the input end is connected; the voltage source is used to power the monitoring board to be detected, wherein the frequency and amplitude of the voltage signal output by the voltage source are corresponding preset values; the pulse generation module is used
- the test signal is output to verify each function to be verified of the monitoring board to be tested, wherein the test signal is a pulse signal with a preset pulse width and a preset amplitude.
- the signal generating device further includes: a phase adjustment module, the phase adjustment module is disposed between the voltage source, the pulse generating module and the monitoring board to be detected, and is respectively connected to the monitoring board to be detected.
- the power port of the monitoring board, the input end of the monitoring board to be detected, the voltage source, and the pulse generation module are connected for adjusting the phases of the voltage signal and the test signal respectively, so that the voltage signal
- the phase difference between the test signal and the test signal is a preset phase difference, and the adjusted voltage signal is transmitted to the power port of the monitoring board to be detected, and the adjusted test signal is transmitted to the monitoring board to be detected. input terminal.
- the system further includes: an impedance measurement device, respectively connected to the processor and the preset port of the monitoring board to be detected, for measuring the preset port of the monitoring board to be detected.
- the equivalent impedance value under preset conditions and transmit the equivalent impedance value to the processor; the processor is also used to, according to each to-be-detected when the monitoring board to be detected is in the working state.
- the waveform signal of the node, the parameters of the monitoring board to be detected, and the equivalent impedance value of the preset port of the monitoring board to be detected under preset conditions determine the health status of the monitoring board to be detected.
- the system further includes: an isolated power supply, the input end of the isolated power supply is used to connect to the mains, and the output end of the isolated power supply is connected to the signal generating device, the collecting device,
- the processor is connected to supply power to the signal generating device, the collecting device, and the processor respectively.
- the function to be verified of the monitoring board to be detected includes one of a positive voltage monitoring function, a negative voltage monitoring function, and a thyristor breakdown voltage monitoring function.
- a thyristor voltage monitoring board detection method including: sending a test signal of a function to be verified to the monitoring board to be detected; obtaining the optical pulse signal output by the monitoring board to be detected after receiving the test signal; according to the test signal and The optical pulse signal determines the working state of the monitoring board to be detected; the waveform signal of each node to be detected is obtained when the monitoring board to be detected is in the working state, wherein the monitoring board to be detected is The working state corresponds to the function to be verified, and the working state includes one of a positive voltage monitoring state, a negative voltage monitoring state, and a thyristor breakdown voltage monitoring state; according to when the monitoring board to be detected is in the working state, The waveform signals of each node to be detected and the parameters of the monitoring board to be detected determine the health status of the monitoring board to be detected.
- the above-mentioned thyristor voltage monitoring board detection system and method can send test signals to the monitoring board to be detected by setting up a signal generating device, and the test signals correspond to the functions to be verified. This simulates the actual working environment for the monitoring board to be tested, which facilitates the verification of various functions of the monitoring board to be tested.
- the optical pulse signal output by the monitoring board to be detected can be collected, and based on the optical pulse signal output by the monitoring board to be detected and the test signal sent by the signal generating device, the working status of the monitoring board to be detected can be determined, thereby facilitating follow-up Collect the corresponding waveform signal.
- the waveform signals at each node to be detected are obtained in sequence, thereby obtaining the corresponding waveform signals at each node to be detected when the monitoring board to be detected is working in a certain state. .
- the function to be verified corresponding to the current working state of the monitoring board to be detected can be determined based on the waveform signal at each node to be detected when the monitoring board to be detected is in the working state, and the parameters of the monitoring board to be detected. Whether it is normal or not, after determining whether the functions to be verified of the monitoring board to be tested are normal, the health status of the monitoring board to be tested can be further comprehensively determined, thereby predicting the life of the monitoring board to be tested.
- Figure 1 is a schematic structural diagram of a thyristor voltage monitoring board detection system in one embodiment
- Figure 2 is a schematic structural diagram of a thyristor voltage monitoring board detection system in another embodiment
- Figure 3 is a structural diagram of a node switching module in an embodiment
- Figure 4 is a schematic structural diagram of a thyristor voltage monitoring board detection system in yet another embodiment
- Figure 5 is a schematic structural diagram of a thyristor voltage monitoring board detection system in yet another embodiment
- Figure 6 is a schematic structural diagram of a thyristor voltage monitoring board detection system in yet another embodiment
- Figure 7 is a schematic structural diagram of a thyristor voltage monitoring board detection system in yet another embodiment
- Figure 8 is a flow chart of a thyristor voltage monitoring board detection method in one embodiment.
- 32-Photoelectric conversion module 33-Waveform acquisition module, 310-Multiple signal input ports, 311-Filter unit, 312-Multi-channel relay module, 313-Signal output port, 314-State feedback circuit, 315-Drive circuit, 316-power supply module, 317-main control chip, 318-network communication interface, 11-voltage source, 12-pulse generation module, 13-phase adjustment module, 50-impedance measurement device, 60-isolated power supply.
- connection in the following embodiments should be understood as “electrical connection”, “communication connection”, etc. if there is transmission of electrical signals or data between the connected objects.
- a thyristor voltage monitoring board detection system including: a signal generating device 10 , a collection device 30 , and a processor 40 . in:
- the signal generating device 10 is connected to the input end of the monitoring board 20 to be tested, and is used to send a test signal of the function to be verified to the monitoring board 20 to be tested.
- the test signals correspond to the functions to be verified.
- different test signals need to be input to the monitoring board 20 to be tested.
- the functions to be verified of the monitoring board 20 to be tested include one of a positive voltage monitoring function, a negative voltage monitoring function, and a thyristor breakdown voltage monitoring function.
- the external power supply is supplied to the monitoring board 20 to be tested, and the voltage driving signal is input, and then the test signal is a pulse signal of +15V.
- the voltage driving signal is used to drive the monitoring board 20 to be tested to work.
- the detection and monitoring board 20 supplies power to ensure that each circuit node in the monitoring board 20 to be detected has sufficient power to operate.
- the +15V pulse signal is used to verify the positive voltage monitoring function of the monitoring board 20 to be detected. If the +15V pulse signal is input to the monitoring board 20 to be detected, the light pulse signal output by the monitoring board 20 to be detected can indicate its If a pulse signal of +15V is detected, it is determined that the positive voltage monitoring function of the monitoring board 20 to be detected reaches the standard.
- the test signal is a pulse signal of -15V.
- the test signal is a +25V pulse signal.
- the +25V pulse signal can simulate the voltage when the thyristor is broken down. According to whether the monitoring board 20 to be detected can output the corresponding light pulse signal, the test signal to be detected is determined. Check whether the thyristor breakdown voltage monitoring function of the monitoring board 20 meets the standard.
- the acquisition device 30 is connected to the signal generating device 10, the output end 22 of the monitoring board to be detected, and the multiple nodes to be detected 21 inside the monitoring board to be detected 20, and is used to detect the test signal according to the test signal and the monitoring board 20 to detect the test signal.
- the output light pulse signal determines the working state of the monitoring board 20 to be detected, and the waveform signals of each node 21 to be detected are sequentially obtained when the monitoring board 20 is in the working state.
- the working state of the monitoring board 20 to be detected corresponds to the function to be verified, and the working state includes one of a positive voltage monitoring state, a negative voltage monitoring state, and a thyristor breakdown voltage monitoring state.
- the test signal corresponding to the function to be verified is input, the monitoring board 20 to be detected will work in the corresponding working state.
- the input test signal is the voltage driving signal corresponding to the positive voltage monitoring function and the +15V pulse signal.
- the monitoring board 20 to be detected will work in a positive voltage monitoring state due to the input of a +15V pulse signal.
- the acquisition device 30 acquires the test signal emitted by the signal generating device 10, so that based on the test signal, it can determine the value of the light pulse signal output by the monitoring board 20 to be detected, which represents the working state of the monitoring board 20 to be detected, so that The working status of the monitoring board 20 to be detected is determined according to the test signal and the light pulse signal output by the monitoring board 20 to be detected. For example, assuming that the test signal is a +10V pulse signal and a voltage driving signal, when the acquisition device 30 can expect that the monitoring board outputs a 0-5V optical pulse signal, it means that the monitoring board 20 to be detected is in a positive voltage monitoring state.
- the acquired light pulse signal output by the monitoring board 20 to be detected is indeed in the range of 0-5V, it can be determined that the monitoring board 20 to be detected is in a positive voltage monitoring state. Otherwise, it is determined that the monitoring board 20 to be detected is not in the positive voltage monitoring state.
- the collection device 30 can determine the period during which the monitoring board 20 to be detected is in the working state, and then sequentially obtain the data when the monitoring board 20 to be detected is in the working state.
- the waveform signal of each node 21 to be detected is the waveform of the period corresponding to the working state of each waveform signal. Therefore, it is convenient to subsequently judge whether the function corresponding to the working state of the monitoring board 20 to be detected meets the standard based on the waveform signal of each node 21 to be detected in the working state of the corresponding monitoring board 20 to be detected.
- the acquisition device 30 determines that the time when the monitoring board 20 to be detected is in the positive voltage monitoring state is from 8 o'clock to 9 o'clock, then the acquisition device 30 sequentially collects the waveform signals of each node 21 to be detected between 8 o'clock and 9 o'clock, so The waveform signals of each node 21 to be detected collected at this time are all waveforms corresponding to the positive voltage monitoring state of the monitoring board 20 to be detected. This facilitates subsequent analysis.
- the processor 40 is connected to the acquisition device 30 and is used to determine the health status of the monitoring board 20 to be detected based on the waveform signals of each node 21 to be detected when the monitoring board 20 is in a working state, and the parameters of the monitoring board 20 to be detected. .
- the processor 40 compares the waveform signal of each node 21 to be detected with the corresponding waveform signal in the database, and compares the signal amplitude, change trend, and waveform of the waveform signal of each node 21 to be detected with the corresponding standard waveform signal. Correlation and other multi-dimensional information can be used to determine whether each to-be-detected node 21 of the to-be-detected monitoring board 20 is normal, and then a corresponding weight is preset for each to-be-detected node 21, and the health status of each to-be-detected node 21 can be calculated. Quantify.
- the parameters of the monitoring board 20 to be tested include the production date, production date, installation location, working hours, and historical fault information of the monitoring board 20 to be tested. Corresponding weights are also set for these parameters. Finally, according to the numerical values and corresponding weights of each evaluation factor, the health status of the monitoring board 20 to be detected can be comprehensively determined.
- a test signal can be sent to the monitoring board 20 to be detected, and the test signal corresponds to the function to be verified.
- an actual working environment is simulated for the monitoring board 20 to be tested, which facilitates verification of various functions of the monitoring board 20 to be tested.
- the acquisition device 30 By arranging the acquisition device 30, the optical pulse signal output by the monitoring board 20 to be detected can be collected, and the operation of the monitoring board 20 to be detected can be determined based on the optical pulse signal output by the monitoring board 20 to be detected and the test signal sent by the signal generating device 10. status, thereby facilitating subsequent collection of corresponding waveform signals.
- the waveform signals at each node 21 to be detected are obtained in sequence, thereby obtaining the corresponding values of each node 21 to be detected when the monitoring board 20 to be detected works in a certain state. waveform signal at.
- the processor 40 it is possible to determine the current working status of the monitoring board 20 to be detected based on the waveform signals at each node 21 to be detected when the monitoring board 20 is in the working state, and the parameters of the monitoring board 20 to be detected.
- the health status of the monitoring board 20 to be tested can be further comprehensively determined, thereby realizing the life span of the monitoring board 20 to be tested. predict.
- the collection device 30 includes: a node switching module 31 , a photoelectric conversion module 32 , and a waveform collection module 33 . in:
- the node switching module 31 includes a plurality of signal input ports and a signal output port.
- the multiple signal input ports of the node switching module 31 are respectively connected to the multiple to-be-detected nodes 21 of the to-be-detected monitoring board 20 in a one-to-one correspondence.
- the node switching module 31 The control end is connected to the processor 40, and is used to connect the paths between each signal input port and the signal output port in sequence under the control of the processor 40.
- the node switching module 31 is a channel selection switch, which can select the corresponding channel to be turned on according to the control instructions of the processor 40, and turn on the paths between each signal input port and the signal output port in sequence through time-sharing sampling. , to realize the collection of waveform signals of each node 21 to be detected.
- the node switching module 31 is a 16-channel selector with a bandwidth of more than 100M.
- the node switching module 31 includes multiple signal input ports 310, one signal output port 313, multiple filter units 311, multi-channel relay modules 312, status feedback circuit 314, drive circuit 315,
- the power supply module 316, the main control chip 317, the network communication interface 318, a plurality of filter units 311 are connected to a plurality of signal input ports 310 in a one-to-one correspondence, the signal input port is also connected to a filter unit 311, and the multi-channel relay module 312 is respectively connected with
- Each filter unit 311, state feedback circuit 314, and drive circuit 315 are connected, the state feedback circuit 314 is connected, and the main control chip 317 is connected to the power supply module 316, the drive circuit 315, the state feedback circuit 314, and the network communication interface 318 respectively.
- the filtering unit 311 is used to filter the waveform signal input by the corresponding node 21 to be detected.
- the multi-channel relay module 312 is used to gate the corresponding channel under the driving of the driving circuit 315.
- the status feedback circuit 314 is used to feed back the channels selected by the multi-channel relay module 312 to the main control chip 317 .
- the power supply module 316 is used to provide power to the main control chip 317 .
- the network communication interface 318 is used to realize communication interaction between the main control chip 317 and the processor 40 .
- the photoelectric conversion module 32 is connected to the output end 22 of the monitoring board to be detected, and is used to convert the optical pulse signal output by the monitoring board 20 to be detected into a feedback signal.
- the photoelectric conversion module 32 can convert the optical pulse signal into a fixed voltage pulse electrical signal, thereby facilitating subsequent processing.
- the waveform acquisition module 33 is connected to the signal output port of the signal generating device 10, the node switching module 31 and the photoelectric conversion module 32 respectively, and is used to determine the working status of the monitoring board 20 to be detected based on the test signal and the feedback signal, and obtain the target to be detected. Detect the waveform signal of the node 21, where the target node 21 to be detected corresponds to the currently turned on signal input port.
- the waveform acquisition module 33 determines the working status of the monitoring board 20 to be detected based on the feedback signal and the test signal, and collects the waveform signal of the corresponding node 21 to be detected.
- the waveform acquisition module 33 is also used to align and normalize the collected waveform signals of each node to be detected 21 corresponding to the same working state of the monitoring board 20 to be detected.
- the waveform signals of each node to be detected 21 in the same working state of the monitoring board 20 to be detected are aligned based on time base synchronization, so as to facilitate comparison and analysis of whether they are correct.
- the time is normalized to limit each waveform signal to a certain range and eliminate the adverse effects caused by strange waveform data.
- the waveform acquisition module 33 first performs analog-to-digital conversion on the waveform signal, then performs signal separation, then caches the obtained data, and then performs waveform conditioning and trigger calculation on the signal to obtain the required The data is then saved and then transmitted to the processor 40 through the communication interface.
- the waveform signals of different nodes 21 to be detected can be collected.
- the photoelectric conversion module 32 the optical pulse signal can be converted into an electrical signal, thereby facilitating subsequent processing.
- the waveform acquisition module 33 the waveform signal corresponding to the working state of the monitoring board 20 to be detected can be collected, so as to facilitate the analysis of whether the function of the monitoring board 20 to be detected is correct.
- the signal generation device 10 includes: a voltage source 11 and a pulse generation module 12.
- the voltage source 11 is connected to the power port of the monitoring board 20 to be detected, and the pulse generation module 12 is connected to the monitoring board 20 to be detected.
- the input terminals of board 20 are connected.
- the voltage source 11 is used to supply power to the monitoring board 20 to be detected.
- the frequency and amplitude of the voltage signal output by the voltage source 11 are corresponding preset values.
- the voltage source 11 is a low-voltage AC voltage source 11, which is a programmable voltage source 11 with network communication function.
- the frequency range of the output AC voltage can be set to 45-60Hz, and the amplitude of the AC voltage is 0-60Hz. 300V, the amplitude, frequency and output time of the output voltage can be adjusted through programming instructions, thereby providing a stable voltage input for the monitoring board 20 to be detected as a working energy source for the monitoring board 20 to be detected.
- the pulse generation module 12 is used to output test signals to verify each function to be verified of the monitoring board 20 to be tested.
- the test signal is a pulse signal with a preset pulse width and a preset amplitude.
- the pulse generation module 12 is also connected to the waveform acquisition module 33, and sends the test signal to the waveform acquisition module 33 at the same time, so that the waveform acquisition module 33 can determine the working status of the monitoring board 20 to be detected.
- the pulse generation module 12 can output a positive pulse signal or a negative pulse signal, and the amplitude and pulse width of the output pulse signal can be adjusted.
- the pulse generation module 12 is connected to the DC voltage equalization port of the monitoring board 20 to be detected, and supplies the pulse signal corresponding to the function to be verified to the monitoring board 20 to be detected as a trigger signal.
- the functions to be verified of the monitoring board 20 to be tested include a positive voltage monitoring function, a negative voltage monitoring function, and a thyristor breakdown voltage monitoring function.
- the working principle of the monitoring board 20 to be detected is as follows:
- Detection of the positive voltage monitoring function/negative voltage monitoring function of the monitoring board 20 to be detected Obtain the light pulse signal output by the monitoring board 20 to be detected when it is subjected to positive/negative voltage and record the corresponding voltage value, and the recorded light pulse The voltage value is compared with the engineering design parameters of the monitoring board 20 to be detected to determine whether the pulse width and wavelength amplitude of the optical pulse signal meet the requirements to determine whether the positive voltage monitoring function/negative voltage monitoring function functions normally.
- Detection of the thyristor breakdown voltage monitoring function of the monitoring board 20 to be detected Use the voltage source 11 to apply an overvoltage protection action voltage value (generally 7200V) exceeding the designed overvoltage protection action voltage of the monitoring board 20 to be detected at both ends of the monitoring board 20 to be detected, and obtain this time If the optical pulse signal output by the monitoring board 20 to be detected is detected within the overvoltage protection action voltage range designed by the monitoring board 20 to be detected, the function is normal, otherwise it is abnormal.
- an overvoltage protection action voltage value generally 7200V
- the voltage source 11 by setting the voltage source 11, sufficient energy can be provided for the operation of the monitoring board 20 to be detected, which facilitates the testing and verification of the monitoring board 20 to be detected.
- the pulse generation module 12 By setting the pulse generation module 12, it can provide sufficient energy to the monitoring board 20 to be detected.
- the test signal is output to simulate the actual working state of the monitoring board 20 to be tested, thereby testing various functions of the monitoring board 20 to be tested.
- the signal generating device 10 further includes: a phase adjustment module 13 .
- the phase adjustment module 13 is arranged between the voltage source 11 and the pulse generation module 12 and the monitoring board 20 to be detected, and is connected to the power port of the monitoring board 20 to be detected, the input end of the monitoring board 20 to be detected, the voltage source 11 and the pulse generation module respectively. 12 connections, used to adjust the phases of the voltage signal and the test signal respectively, so that the phase difference between the voltage signal and the test signal is the preset phase difference, and transmit the adjusted voltage signal to the power port of the monitoring board 20 to be detected, and The adjusted test signal is transmitted to the input end of the monitoring board 20 to be tested.
- the phase adjustment module 13 can adjust the phases of the voltage signal and the test signal respectively, and can synchronize them before transmitting them. For example, the phase adjustment module 13 detects the phase of the voltage signal. When the phase of the voltage signal reaches the set value, The test signal is then output synchronously, thereby facilitating the accuracy of subsequent test results and simulating the actual input situation of the monitoring board 20 to be tested. Secondly, the phase adjustment module 13 can also adjust the phase difference between the voltage signal and the test signal to a preset phase difference, thereby simulating various input conditions of the monitoring board 20 to be detected that may be encountered in practice. The functions of the to-be-tested monitoring board 20 under various working environments are further tested.
- phase differences of various input signals can be simulated for the monitoring board 20 to be detected, thereby simulating various inputs that the monitoring board 20 to be detected may receive in practice. Conduct a more complete test on the monitoring board 20 to be tested to improve the reliability of the monitoring board 20 to be tested.
- the thyristor voltage monitoring board detection system further includes: an impedance measuring device 50 .
- the impedance measuring device 50 is respectively connected to the processor 40 and the preset port of the monitoring board 20 to be detected, and is used to measure the equivalent impedance value of the preset port of the monitoring board 20 to be detected under preset conditions, and calculate the equivalent impedance value. transmitted to processor 40.
- the impedance measuring device 50 uses an equivalent network impedance test method to measure the impedance of the preset port using AC and DC methods respectively. For example, apply a DC voltage to the monitoring board 20 to be detected, test the equivalent resistance of the DC voltage equalizing port of the monitoring board 20 to be detected, apply an AC voltage of 1 kHz to the monitoring board 20 to be detected, and measure the equivalent resistance of the AC power supply port of the monitoring board 20 to be detected. Effective capacitance, resistance, calculate capacitive reactance angle.
- the processor 40 is also used to, according to the waveform signal of each node 21 to be detected when the monitoring board 20 is in the working state, the parameters of the monitoring board 20 to be detected, and the preset port of the monitoring board 20 to be detected under preset conditions.
- the equivalent impedance value determines the health status of the monitoring board 20 to be detected.
- the processor 40 includes the health status determination software of the monitoring board 20 to be detected.
- the software includes a human-computer interaction module, an information collection module, an automated testing module, a process editing module, a data presentation module, a data storage module, and a data analysis module.
- the human-computer interaction module is a module used for human interaction with the software. It can accept the user's operating instructions, perform corresponding actions according to the operating instructions, and provide visual feedback to the user.
- the information collection module is used to enter relevant information of the monitoring board 20 to be tested, including but not limited to the production date, production date, installation location, working hours, and historical fault information of the monitoring board 20 to be tested, so as to provide original information for subsequent analysis.
- the automated test module can issue control instructions according to the established test process, control the voltage source 11 and the pulse generation module 12 to apply different stresses to the monitoring board 20 to be tested, collect signal waveforms of key nodes, and automatically switch the node 21 to be tested. , perform automated test signal input and real-time collection output.
- the process editing module can edit the test process, switch the test monitoring board 20 and the test method, including setting the corresponding input parameters, output signal positions, etc.
- the data presentation module, data storage module, and data analysis module can present, store and analyze the test results, and provide the health status of the monitoring board 20 to be tested.
- the processor 40 comprehensively determines the monitoring board to be detected based on the production date, production date, installation location, working hours, historical fault information, impedance value of the preset port, and waveform signals of multiple nodes 21 to be detected of the monitoring board 20 to be detected. 20 health status.
- Each parameter has a corresponding standard value. According to the error between each parameter and the corresponding standard value, and the preset weight corresponding to each parameter, the health status of the monitoring board 20 to be detected can be comprehensively determined.
- the impedance of the preset port on the monitoring board 20 to be detected can be measured, thereby providing parameter input for the subsequent processor 40 to determine the health status of the monitoring board 20 to be detected.
- the processor 40 comprehensively determines the health status of the monitoring board 20 to be detected based on the parameters, impedance and waveform signals of the monitoring board 20 to be detected, so that the health status of the monitoring board 20 to be detected can be accurately determined.
- the thyristor voltage monitoring board detection system further includes: an isolated power supply 60 .
- the input end of the isolated power supply 60 is used to connect to the mains power, and the output end of the isolated power supply 60 is connected to the signal generating device 10, the collecting device 30, and the processor 40, respectively. 40 powered.
- the isolated power supply 60 can filter the mains power to remove noise from the mains power, and has a signal isolation function to ensure that there is no noise in the power supply voltage.
- a thyristor voltage monitoring board detection method including:
- Step S800 Send a test signal of the function to be verified to the monitoring board to be tested.
- Step S820 Obtain the optical pulse signal output by the monitoring board to be detected after receiving the test signal.
- Step S840 Determine the working status of the monitoring board to be detected based on the test signal and the light pulse signal.
- Step S860 Obtain the waveform signals of each node to be detected when the monitoring board to be detected is in the working state.
- the working state of the monitoring board to be detected corresponds to the function to be verified, and the working state includes one of a positive voltage monitoring state, a negative voltage monitoring state, and a thyristor breakdown voltage monitoring state.
- Step S880 Determine the health status of the monitoring board to be detected based on the waveform signals of each node to be detected when the monitoring board to be detected is in the working state and the parameters of the monitoring board to be detected.
- a test signal is sent to the monitoring board to be detected, and the test signal corresponds to the function to be verified.
- This simulates the actual working environment for the monitoring board to be tested, which facilitates the verification of various functions of the monitoring board to be tested.
- Collect the optical pulse signal output by the monitoring board to be detected and determine the working status of the monitoring board to be detected based on the optical pulse signal output by the monitoring board to be detected and the test signal sent by the signal generating device, so as to facilitate subsequent collection of the corresponding waveform signal.
- the waveform signals at each node to be detected are obtained in sequence, thereby obtaining the corresponding waveform signals at each node to be detected when the monitoring board to be detected is working in a certain state.
- the waveform signal at each node to be detected when the monitoring board to be detected is in the working state, and the parameters of the monitoring board to be detected it can be determined whether the function to be verified corresponding to the current working state of the monitoring board to be detected is normal. After determining After verifying whether the functions of the monitoring board to be tested are normal, the health status of the monitoring board to be tested can be further comprehensively determined, thereby predicting the life of the monitoring board to be tested.
- each step in the flowchart of FIG. 8 is shown in sequence as indicated by the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless explicitly stated in this article, there is no strict order restriction on the execution of these steps, and these steps can be executed in other orders. Moreover, at least some of the steps in Figure 8 may include multiple steps or stages. These steps or stages are not necessarily executed at the same time, but may be executed at different times. The execution order of these steps or stages is also It does not necessarily need to be performed sequentially, but may be performed in turn or alternately with other steps or at least part of steps or stages in other steps.
- Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory or optical memory, etc.
- Volatile memory may include random access memory (RAM) or external cache memory.
- RAM can be in many forms, such as static random access memory (Static Random Access Memory, SRAM) or dynamic random access memory (Dynamic Random Access Memory, DRAM).
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Abstract
一种晶闸管电压监测板检测系统及方法，包括：信号发生装置（10），用于向待检测监测板（20）发出待验证功能的测试信号；采集装置（30），与信号发生装置（10）、待检测监测板（20）的输出端（22）以及待检测监测板（20）内部的多个待检测节点（21）连接，用于根据测试信号和待检测监测板接收到测试信号后输出的光脉冲信号，确定待检测监测板（20）的工作状态，并依次获取在待检测监测板（20）处于工作状态时的各待检测节点（21）的波形信号。处理器（40），与采集装置（30）连接，用于根据待检测监测板（20）处于工作状态时的各待检测节点（21）的波形信号，以及待检测监测板（20）的参数，确定待检测监测板（20）的健康状态。
Description
相关申请的交叉引用：本申请要求于2022年7月14日提交中国专利局、申请号为2022108232302发明名称为“晶闸管电压监测板检测系统及方法”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
本申请涉及电气设备检测技术领域，特别是涉及一种晶闸管电压监测板检测系统及方法。
随着电网建设的发展，越来越多的特高压输电站被建成，换流阀是直流输电工程的关键设备，换流阀的可靠运行对于直流输电工程至关重要，晶闸管是换流阀中的基本单元，为了保证换流阀的可靠运行，则需要对晶闸管的运行状态进行监测。因此，每级晶闸管均需要配备一块晶闸管电压监测板，晶闸管电压监测板为晶闸管触发、关断以及过电压提供指示信号，以便电网系统作出相应的控制指令。晶闸管电压监测板(TVM)具备直流均压、正向电压监测、反向电压监测、晶闸管BOD(Break Over Diode)电压监测等功能。如晶闸管电压监测板不能正常工作，则使得电网系统无法监测晶闸管的运行状态，无法发出正确的控制指令，因此，需要对晶闸管电压监测板进行检测。
传统技术中，在晶闸管电压监测板正式投入使用前，以及晶闸管电压监测板出现故障维修时，才能对晶闸管电压监测板进行检测。
然而，传统技术的方式，无法对晶闸管电压监测板的寿命进行预估，从而无法避免在晶闸管电压监测板的使用过程中出现故障的情况。
发明内容
基于此，有必要针对上述技术问题，提供一种能够对晶闸管电压监测板的使用过程中，就对晶闸管电压监测板的健康状态进行确定，从而避免晶闸管电压监测板在运行过程中出现故障而对电网系统造成损失的晶闸管电压监测板检测系统及方法。
一种晶闸管电压监测板检测系统，其特征在于，包括：信号发生装置，与待检测监测板的输入端连接，用于向所述待检测监测板发出待验证功能的测试信号；采集装置，与所述信号发生装置、所述待检测监测板的输出端以及所述待检测监测板内部的多个待检测节点连接，用于根据所述测试信号和所述待检测监测板接收到所述测试信号后输出的光脉冲信号，确定所述待检测监测板的工作状态，并依次获取在所述待检测监测板处于所述工作状态时的各待检测节点的波形信号，其中，所述待检测监测板的工作状态与所述待验证功能对应，所述工作状态包括正电压监测状态、负电压监测状态、晶闸管击穿电压监测状态中的一种；处理器，与所述采集装置连接，用于根据所述待检测监测板处于所述工作状态时的各待检测节点的波形信号，以及所述待检测监测板的参数，确定所述待检测监测板的健康状态。
在其中一个实施例中，所述采集装置包括：节点切换模块，包括多个信号输入口和一个信号输出口，所述节点切换模块的多个信号输入口分别与所述待检测监测板的多个待检测节点一一对应连接，所述节点切换模块的控制端与所述处理器连接，用于在所述处理器的控制下，依次导通各信号输入口与所述信号输出口之间的通路；光电转换模块，与所述待检测监测板的输出端连接，用于将所述待检测监测板输出的光脉冲信号转换为反馈信号；波形采集模块，分别与所述信号发生装置、所述节点切换模块的信号输出口和所述光电转换模块连接，用于根据所述测试信号和所述反馈信号，确定所述待检测监测板的工作状态，并获取目标待检测节点的波形信号，其中，所述目标待检测节点与当前导通的信号输入口对应。
在其中一个实施例中，所述波形采集模块还用于，分别将采集到的与所述待检测监测板的同一工作状态对应的各待检测节点的波形信号对齐并进行归一化处理。
在其中一个实施例中，所述节点切换模块还包括：多个滤波单元，所述多个滤波单元与所述多个信号输入口一一对应连接，用于对对应的信号输入口输入的波形信号进行滤波处理。
在其中一个实施例中，所述信号发生装置包括：电压源、脉冲发生模块，所述电压源与所述待检测监测板的电源端口连接，所述脉冲发生模块与所述待检测监测板的输入端连接；所述电压源，用于为所述待检测监测板供电，其中，所述电压源输出的电压信号的频率和幅值均为对应的预设值；所述脉冲发生模块，用于输出所述测试信号以验证所述待检测监测板的各待验证功能，其中，所述测试信号为预设脉宽和预设幅值的脉冲信号。
在其中一个实施例中，所述信号发生装置还包括：相位调整模块，所述相位调整模块设置在电压源和所述脉冲发生模块与所述待检测监测板之间，分别与所述待检测监测板的电源端口、所述待检测监测板的输入端、所述电压源、所述脉冲发生模块连接，用于分别调整所述电压信号和所述测试信号的相位，以使所述电压信号和所述测试信号的相位差为预设相位差，并将调整后的电压信号传输至所述待检测监测板的电源端口，将调整后的所述测试信号传输至所述待检测监测板的输入端。
在其中一个实施例中，所述系统还包括：阻抗测量装置，分别与所述处理器和所述待检测监测板的预设端口连接，用于测量所述待检测监测板的预设端口在预设条件下的等效阻抗值，并将所述等效阻抗值传输至所述处理器；所述处理器还用于，根据所述待检测监测板处于所述工作状态时的各待检测节点的波形信号、所述待检测监测板的参数、所述待检测监测板的预设端口在预设条件下的等效阻抗值，确定所述待检测监测板的健康状态。
在其中一个实施例中，所述系统还包括：隔离电源，所述隔离电源的输入端用于与市电连接，所述隔离电源的输出端分别与所述信号发生装置、所述采集装置、所述处理器连接，用于分别为所述信号发生装置、所述采集装置、所述处理器供电。
在其中一个实施例中，所述待检测监测板的待验证功能包括正电压监测功能、负电压监测功能、晶闸管击穿电压监测功能中的一种。
一种晶闸管电压监测板检测方法，包括：向待检测监测板发出待验证功能的测试信号；获取所述待检测监测板接收到所述测试信号后输出的光脉冲信号；根据所述测试信号和所述光脉冲信号，确定所述待检测监测板的工作状态；分别获取在所述待检测监测板处于所述工作状态时的各待检测节点的波形信号，其中，所述待检测监测板的工作状态与所述待验证功能对应，所述工作状态包括正电压监测状态、负电压监测状态、晶闸管击穿电压监测状态中的一种；根据所述待检测监测板处于所述工作状态时的各待检测节点的波形信号，以及所述待检测监测板的参数，确定所述待检测监测板的健康状态。
上述晶闸管电压监测板检测系统及方法，通过设置信号发生装置，能够向待检测监测板发送测试信号，测试信号与待验证的功能相对应。从而为待检测监测板模拟出了实际的工作环境，便于验证待检测监测板的各种功能。通过设置采集装置，能够采集待检测监测板输出的光脉冲信号，并根据待检测监测板输出的光脉冲信号以及信号发生装置发出的测试信号，确定出待检测监测板的工作状态，从而便于后续采集对应的波形信号。在确定出待检测监测板的工作状态后，便依次获取各待检测节点处的波形信号，从而得到了当待检测监测板工作在某一状态下时，对应的各待检测节点处的波形信号。通过设置处理器，能够根据待检测监测板处于工作状态下的各待检测节点处的波形信号，以及待检测监测板的参数，从而能够确定待检测监测板的当前工作状态所对应的待验证功能是否正常，在确定了待检测监测板的各待验证功能是否正常后，即可进一步综合确定待检测监测板的健康状态，从而实现了对待检测监测板的寿命的预测。
为了更清楚地说明本申请实施例或传统技术中的技术方案，下面将对实施例或传统技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本申请的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为一个实施例中晶闸管电压监测板检测系统的结构示意图；
图2为另一个实施例中晶闸管电压监测板检测系统的结构示意图；
图3为一个实施例中节点切换模块的结构图；
图4为又一个实施例中晶闸管电压监测板检测系统的结构示意图；
图5为又一个实施例中晶闸管电压监测板检测系统的结构示意图；
图6为又一个实施例中晶闸管电压监测板检测系统的结构示意图；
图7为又一个实施例中晶闸管电压监测板检测系统的结构示意图；
图8为一个实施例中晶闸管电压监测板检测方法的流程图。
附图标记说明：10-信号发生装置，20-待检测监测板，21-待检测节点，22-待检测监测板的输出端，30-采集装置，40-处理器，31-节点切换模块，
32-光电转换模块，33-波形采集模块，310-多个信号输入口，311-滤波单元，312-多通道继电器模组，313-信号输出口，314-状态反馈电路，315-驱动电路，316-供电模块，317-主控芯片，318-网络通信接口，11-电压源，12-脉冲发生模块，13-相位调整模块，50-阻抗测量装置，60-隔离电源。
为了便于理解本申请，下面将参照相关附图对本申请进行更全面的描述。附图中给出了本申请的实施例。但是，本申请可以以许多不同的形式来实现，并不限于本文所描述的实施例。相反地，提供这些实施例的目的是使本申请的公开内容更加透彻全面。
除非另有定义，本文所使用的所有的技术和科学术语与属于本申请的技术领域的技术人员通常理解的含义相同。本文中在本申请的说明书中所使用的术语只是为了描述具体的实施例的目的，不是旨在于限制本申请。
需要说明的是，当一个元件被认为是“连接”另一个元件时，它可以是直接连接到另一个元件，或者通过居中元件连接另一个元件。此外，以下实施例中的“连接”，如果被连接的对象之间具有电信号或数据的传递，则应理解为“电连接”、“通信连接”等。
在此使用时，单数形式的“一”、“一个”和“所述/该”也可以包括复数形式，除非上下文清楚指出另外的方式。还应当理解的是，术语“包括/包 含”或“具有”等指定所陈述的特征、整体、步骤、操作、组件、部分或它们的组合的存在，但是不排除存在或添加一个或更多个其他特征、整体、步骤、操作、组件、部分或它们的组合的可能性。
在其中一个实施例中，如图1所示，提供了一种晶闸管电压监测板检测系统，包括：信号发生装置10、采集装置30、处理器40。其中：
信号发生装置10，与待检测监测板20的输入端连接，用于向待检测监测板20发出待验证功能的测试信号。
示例性地，测试信号与待验证功能相对应，对于验证待检测监测板20的不同功能，则需要向待检测监测板20输入不同的测试信号。待检测监测板20的待验证功能包括正电压监测功能、负电压监测功能、晶闸管击穿电压监测功能中的一种。
示例性地，对应正电压监测功能，首先外界向待检测监测板20供电，输入电压驱动信号，然后测试信号为+15V的脉冲信号，电压驱动信号用于驱动待检测监测板20工作，为待检测监测板20进行供电，保证待检测监测板20中的各个电路节点能够具有充足的电能进行动作。+15V的脉冲信号是用于验证待检测监测板20正电压监测的功能，若在向待检测监测板20输入+15V的脉冲信号后，待检测监测板20输出的光脉冲信号中能够指示其监测到+15V的脉冲信号，则判定待检测监测板20的正电压监测功能达标。对应负电压监测功能，首先外界向待检测监测板20供电，输入电压驱动信号，测试信号为-15V的脉冲信号。对应晶闸管击穿电压监测功能，测试信号为+25V的脉冲信号，+25V的脉冲信号能够模拟晶闸管被击穿时的电压，根据待检测监测板20能否输出对应的光脉冲信号，从而判定待检测监测板20的晶闸管击穿电压监测功能是否达标。
采集装置30，与信号发生装置10、待检测监测板的输出端22以及待检测监测板20内部的多个待检测节点21连接，用于根据测试信号和待检测监测板20接收到测试信号后输出的光脉冲信号，确定待检测监测板20的工作状态，并依次获取在待检测监测板20处于工作状态时的各待检测节点21的波形信号。
具体地，待检测监测板20的工作状态与待验证功能对应，工作状态包括正电压监测状态、负电压监测状态、晶闸管击穿电压监测状态中的一种。当输入对应的待验证功能的测试信号时，待检测监测板20就会工作在对应的工作状态下，例如，输入的测试信号是与正电压监测功能对应的电压驱动信号和+15V的脉冲信号，则待检测监测板20由于输入了+15V的脉冲信号，就会工作在正电压监测状态下。
具体地，采集装置30获取信号发生装置10发射的测试信号，从而根据测试信号，能够判断待检测监测板20输出的光脉冲信号为什么数值时，则代表待检测监测板20处于什么工作状态，从而根据测试信号以及待检测监测板20输出的光脉冲信号，来判断待检测监测板20的工作状态。例如，假设测试信号是+10V脉冲信号和电压驱动信号，则采集装置30能够预期监测板输出0-5V的光脉冲信号时，则代表待检测监测板20处于正电压监测状态。此时，若获取到的待检测监测板20输出的光脉冲信号确实在0-5V区间，则可判定待检测监测板20处于正电压监测状态。否则判定待检测监测板20不处于正电压监测状态。
具体地，采集装置30在判定出待检测监测板20的工作状态后，即可确定出待检测监测板20处于工作状态的时段，然后去依次获取在待检测监测板20处于该工作状态时的各待检测节点21的波形信号，即截取各波形信号对应工作状态的时段的这一段波形。从而便于后续根据对应的待检测监测板20的工作状态下的各待检测节点21的波形信号，能够判断待检测监测板20的该工作状态对应的功能是否达标。例如，采集装置30判定出待检测监测板20处于正电压监测状态的时间为8点到9点，则采集装置30依次采集8点到9点之间的各待检测节点21的波形信号，此时采集到的各待检测节点21的波形信号都是与待检测监测板20的正电压监测状态对应的波形。从而便于后续的分析。
处理器40，与采集装置30连接，用于根据待检测监测板20处于工作状态时的各待检测节点21的波形信号，以及待检测监测板20的参数，确定待检测监测板20的健康状态。
具体地，处理器40将各个待检测节点21的波形信号分别与数据库中对应的波形信号进行对比，对比各个待检测节点21的波形信号与对应的标准波形信号的信号幅值、变化趋势、波形相关度等多维度的信息，从而可以确定待检测监测板20的各待检测节点21是否正常，然后对各待检测节点21预设对应的权重，即可把各待检测节点21的健康状态进行量化。待检测监测板20的参数包括待检测监测板20的生产日期，投产日期，安装地点，工作时长，历史故障信息，对于这些参数，也均设置有对应的权重。最后根据各评价因素的数值与对应的权重，即可综合的确定待检测监测板20的健康状态。
在本实施例中，通过设置信号发生装置10，能够向待检测监测板20发送测试信号，测试信号与待验证的功能相对应。从而为待检测监测板20模拟出了实际的工作环境，便于验证待检测监测板20的各种功能。通过设置采集装置30，能够采集待检测监测板20输出的光脉冲信号，并根据待检测监测板20输出的光脉冲信号以及信号发生装置10发出的测试信号，确定出待检测监测板20的工作状态，从而便于后续采集对应的波形信号。在确定出待检测监测板20的工作状态后，便依次获取各待检测节点21处的波形信号，从而得到了当待检测监测板20工作在某一状态下时，对应的各待检测节点21处的波形信号。通过设置处理器40，能够根据待检测监测板20处于工作状态下的各待检测节点21处的波形信号，以及待检测监测板20的参数，从而能够确定待检测监测板20的当前工作状态所对应的待验证功能是否正常，在确定了待检测监测板20的各待验证功能是否正常后，即可进一步综合确定待检测监测板20的健康状态，从而实现了对待检测监测板20的寿命的预测。
在其中一个实施例中，如图2所示，采集装置30包括：节点切换模块31、光电转换模块32、波形采集模块33。其中：
节点切换模块31，包括多个信号输入口和一个信号输出口，节点切换模块31的多个信号输入口分别与待检测监测板20的多个待检测节点21一一对应连接，节点切换模块31的控制端与处理器40连接，用于在处理器40的控制下，依次导通各信号输入口与信号输出口之间的通路。
具体地，节点切换模块31为通道选择开关，能够根据处理器40的控制指令，选择对应的通道导通，通过分时采样的方式，依次导通各信号输入口与信号输出口之间的通路，实现各待检测节点21的波形信号的采集。
示例性地，节点切换模块31为带宽100M以上的16通道选择器。
示例性地，如图3所示，节点切换模块31包括多个信号输入口310、一个信号输出口313、多个滤波单元311、多通道继电器模组312、状态反馈电路314、驱动电路315、供电模块316、主控芯片317、网络通信接口318，多个滤波单元311与多个信号输入口310一一对应连接，信号输入口也连接有一个滤波单元311，多通道继电器模组312分别与各滤波单元311、状态反馈电路314、驱动电路315连接，状态反馈电路314连接，主控芯片317分别与供电模块316、驱动电路315、状态反馈电路314和网络通信接口318连接。滤波单元311用于对对应的待检测节点21输入的波形信号进行滤波处理。多通道继电器模组312用于在驱动电路315的驱动下，选通对应的通道。状态反馈电路314用于将多通道继电器模组312选通的通道反馈给主控芯片317。供电模块316用于为主控芯片317供电。网络通信接口318用于实现主控芯片317与处理器40之间的通信交互。
光电转换模块32，与待检测监测板的输出端22连接，用于将待检测监测板20输出的光脉冲信号转换为反馈信号。
具体地，光电转换模块32能够将光脉冲信号转换为固定电压的脉冲电信号，从而便于后续的处理。
波形采集模块33，分别与信号发生装置10、节点切换模块31的信号输出口和光电转换模块32连接，用于根据测试信号和反馈信号，确定待检测监测板20的工作状态，并获取目标待检测节点21的波形信号，其中，目标待检测节点21与当前导通的信号输入口对应。
具体地，波形采集模块33根据反馈信号和测试信号，确定待检测监测板20的工作状态，并采集对应的待检测节点21的波形信号。
具体地，波形采集模块33还用于，分别将采集到的与待检测监测板20的同一工作状态对应的各待检测节点21的波形信号对齐并进行归一化处理。将 待检测监测板20同一工作状态下的各待检测节点21的波形信号对齐，基于时基同步，从而便于进行比较，便于分析其是否正确。并对时间进行归一化处理，便于将各波形信号均限定在一定的范围内，消除奇异波形数据导致的不良影响。
示例性地，波形采集模块33在采样到波形信号后，首先对波形信号进行模数转换，然后进行信号分离，然后将得到的数据缓存，再对信号进行波形调理和触发计算，从而得到需要的数据，然后将数据保存，再通过通信接口传输给处理器40。
在本实施例中，通过设置节点切换模块31，能够实现不同的待检测节点21的波形信号的采集。通过设置光电转换模块32，能够将光脉冲信号转换为电信号，从而便于后续的处理。通过设置波形采集模块33，能够采集与待检测监测板20的工作状态对应的波形信号，便于分析待检测监测板20的功能是否正确。
在其中一个实施例中，如图4所示，信号发生装置10包括：电压源11、脉冲发生模块12，电压源11与待检测监测板20的电源端口连接，脉冲发生模块12与待检测监测板20的输入端连接。
电压源11，用于为待检测监测板20供电。
具体地，电压源11输出的电压信号的频率和幅值均为对应的预设值。
示例性地，电压源11为低压交流电压源11，是带有网络通信功能的可编程电压源11，可设定输出的交流电压的频率范围在45-60Hz，交流电压的幅值在0-300V，可以通过编程指令来调整输出的电压的幅值、频率以及输出的时间，从而能够为待检测监测板20提供稳定的电压输入，作为待检测监测板20的工作能量来源。
脉冲发生模块12，用于输出测试信号以验证待检测监测板20的各待验证功能。
具体地，测试信号为预设脉宽和预设幅值的脉冲信号。脉冲发生模块12还与波形采集模块33连接，将测试信号也同时发送至波形采集模块33，便于波形采集模块33判断待检测监测板20的工作状态。
示例性地，脉冲发生模块12可以输出正脉冲信号，也可以输出负脉冲信号，输出的脉冲信号的幅值和脉宽均可调整。脉冲发生模块12连接在待检测监测板20的直流均压端口，为待检测监测板20出入对应的待验证功能的脉冲信号作为触发信号。
具体地，待检测监测板20的待验证功能包括正电压监测功能、负电压监测功能、晶闸管击穿电压监测功能。待检测监测板20的工作原理如下：
待检测监测板20的正电压监测功能/负电压监测功能的检测：获取待检测监测板20在承受正向/负向电压时输出的光脉冲信号并记录相应的电压值，将记录的光脉冲电压值与待检测监测板20工程设计参数比较，判断光脉冲信号脉宽、波长幅值是否符合要求，来确定正电压监测功能/负电压监测功能功能正常与否。
待检测监测板20晶闸管击穿电压监测功能的检测：采用电压源11在待检测监测板20两端施加超过待检测监测板20设计的过压保护动作电压值(一般为7200V)，获取此时待检测监测板20输出的光脉冲信号，若在待检测监测板20设计的过压保护动作电压区间内检测到脉冲信号，则此功能正常，否则为异常。
在本实施例中，通过设置电压源11，能够为待检测监测板20的工作提供足够的能量，便于对待检测监测板20进行测试验证，通过设置脉冲发生模块12，能够向待检测监测板20输出测试信号，模拟待检测监测板20实际中的工作状态，从而对待检测监测板20的多种功能进行测试。
在其中一个实施例中，如图5所示，信号发生装置10还包括：相位调整模块13。
相位调整模块13设置在电压源11和脉冲发生模块12与待检测监测板20之间，分别与待检测监测板20的电源端口、待检测监测板20的输入端、电压源11、脉冲发生模块12连接，用于分别调整电压信号和测试信号的相位，以使电压信号和测试信号的相位差为预设相位差，并将调整后的电压信号传输至待检测监测板20的电源端口，将调整后的测试信号传输至待检测监测板20的输入端。
具体地，相位调整模块13能够分别调整电压信号和测试信号的相位，能够将其同步后再进行传输，例如，相位调整模块13检测电压信号的相位，当电压信号的相位达到设定值时，再同步输出测试信号，从而便于后续的测试结果的准确，并且能够模拟实际中的待检测监测板20的输入情况。其次，相位调整模块13还能够将电压信号和测试信号的相位差调整为预设相位差，从而模拟实际中可能碰到的多种待检测监测板20的输入情况。进一步对待检测监测板20的在各种工作环境下的功能进行测试。
在本实施例中，通过设置相位调整模块13，能够为待检测监测板20模拟出各种不同的输入信号的相位差，从而模拟出实际中待检测监测板20可能接收到的各种输入，对待检测监测板20进行更加完整的测试，提高待检测监测板20的可靠性。
在其中一个实施例中，如图6所示，晶闸管电压监测板检测系统还包括：阻抗测量装置50。
阻抗测量装置50分别与处理器40和待检测监测板20的预设端口连接，用于测量待检测监测板20的预设端口在预设条件下的等效阻抗值，并将等效阻抗值传输至处理器40。
具体地，阻抗测量装置50采用等效网络阻抗测试的方式，分别采用交流和直流的方式测量预设端口的阻抗。例如，向待检测监测板20施加直流电压，测试待检测监测板20直流均压端口的等效电阻，向待检测监测板20施加1kHz的交流电压，测量待检测监测板20交流供电端口的等效电容，电阻，计算容抗角度。
处理器40还用于，根据待检测监测板20处于工作状态时的各待检测节点21的波形信号、待检测监测板20的参数、待检测监测板20的预设端口在预设条件下的等效阻抗值，确定待检测监测板20的健康状态。
具体地，处理器40中包括待检测监测板20的健康状态确定软件，该软件包括人机交互模块、信息采集模块、自动化测试模块、流程编辑模块、数据呈现模块、数据存储模块、数据分析模块。人机交互模块是用于人员与该软件进行操作交互的模块，能够接受使用人员的操作指令，根据操作指令执行对应的 动作，并通过可视化的方式反馈给使用人员。信息采集模块用于录入待检测监测板20的相关信息，包含但不限于待检测监测板20的生产日期，投产日期，安装地点，工作时长，历史故障信息，为后续分析提供原始信息。自动化测试模块，能够根据既定的测试流程，发出控制指令，控制电压源11和脉冲发生模块12对待检测监测板20施加不同的应力，并采集关键节点的信号波形，还能自动切换待检测节点21，进行自动化的测试信号输入，以及实时采集输出。流程编辑模块，能够编辑测试流程，切换测试的待检测监测板20和测试方法，包括设置对应的输入参数，输出信号位置等。数据呈现模块，数据存储模块，数据分析模块能够对测试结果进行呈现存储和分析，给出待检测监测板20的健康状态。处理器40根据待检测监测板20的生产日期、投产日期、安装地点、工作时长、历史故障信息、预设端口的阻抗值、多个待检测节点21的波形信号，综合确定出待检测监测板20的健康状态。各参数都设有对应的标准值，根据各参数与对应的标准值的误差，以及各参数对应的预设权重，即可综合的确定出待检测监测板20的健康状态。
在本实施例中，通过设置阻抗测量装置50，能够测量待检测监测板20上预设端口的阻抗，从而为后续处理器40对待检测监测板20的健康状态的确定提供了参数输入。处理器40根据待检测监测板20的参数、阻抗以及波形信号，综合的确定待检测监测板20的健康状态，从而能够准确的判断待检测监测板20的健康状态。
在其中一个实施例中，如图7所示，晶闸管电压监测板检测系统还包括：隔离电源60。
隔离电源60的输入端用于与市电连接，隔离电源60的输出端分别与信号发生装置10、采集装置30、处理器40连接，用于分别为信号发生装置10、采集装置30、处理器40供电。
具体地，隔离电源60能够对市电进行滤波，去除市电中的杂讯，并且具备信号隔离的功能，能够保证供电的电压中没有噪声杂讯。
在本实施例中，通过设置隔离电源60，去除了供电电压中可能存在的干扰信号，提高了后续对待检测监测板20的健康状态确定的结果的准确性。
在其中一个实施例中，如图8所示，提供了一种晶闸管电压监测板检测方法，包括：
步骤S800，向待检测监测板发出待验证功能的测试信号。
步骤S820，获取待检测监测板接收到测试信号后输出的光脉冲信号。
步骤S840，根据测试信号和光脉冲信号，确定待检测监测板的工作状态。
步骤S860，分别获取在待检测监测板处于工作状态时的各待检测节点的波形信号。
具体地，待检测监测板的工作状态与待验证功能对应，工作状态包括正电压监测状态、负电压监测状态、晶闸管击穿电压监测状态中的一种。
步骤S880，根据待检测监测板处于工作状态时的各待检测节点的波形信号，以及待检测监测板的参数，确定待检测监测板的健康状态。
在本实施例中，向待检测监测板发送测试信号，测试信号与待验证的功能相对应。从而为待检测监测板模拟出了实际的工作环境，便于验证待检测监测板的各种功能。采集待检测监测板输出的光脉冲信号，并根据待检测监测板输出的光脉冲信号以及信号发生装置发出的测试信号，确定出待检测监测板的工作状态，从而便于后续采集对应的波形信号。在确定出待检测监测板的工作状态后，便依次获取各待检测节点处的波形信号，从而得到了当待检测监测板工作在某一状态下时，对应的各待检测节点处的波形信号。根据待检测监测板处于工作状态下的各待检测节点处的波形信号，以及待检测监测板的参数，从而能够确定待检测监测板的当前工作状态所对应的待验证功能是否正常，在确定了待检测监测板的各待验证功能是否正常后，即可进一步综合确定待检测监测板的健康状态，从而实现了对待检测监测板的寿命的预测。
应该理解的是，虽然图8的流程图中的各个步骤按照箭头的指示依次显示，但是这些步骤并不是必然按照箭头指示的顺序依次执行。除非本文中有明确的说明，这些步骤的执行并没有严格的顺序限制，这些步骤可以以其它的顺序执行。而且，图8中的至少一部分步骤可以包括多个步骤或者多个阶段，这些步骤或者阶段并不必然是在同一时刻执行完成，而是可以在不同的时刻执 行，这些步骤或者阶段的执行顺序也不必然是依次进行，而是可以与其它步骤或者其它步骤中的步骤或者阶段的至少一部分轮流或者交替地执行。
本领域普通技术人员可以理解实现上述实施例方法中的全部或部分流程，是可以通过计算机程序来指令相关的硬件来完成，所述的计算机程序可存储于一非易失性计算机可读取存储介质中，该计算机程序在执行时，可包括如上述各方法的实施例的流程。其中，本申请所提供的各实施例中所使用的对存储器、存储、数据库或其它介质的任何引用，均可包括非易失性和易失性存储器中的至少一种。非易失性存储器可包括只读存储器(Read-Only Memory，ROM)、磁带、软盘、闪存或光存储器等。易失性存储器可包括随机存取存储器(Random Access Memory，RAM)或外部高速缓冲存储器。作为说明而非局限，RAM可以是多种形式，比如静态随机存取存储器(Static Random Access Memory，SRAM)或动态随机存取存储器(Dynamic Random Access Memory，DRAM)等。
在本说明书的描述中，参考术语“有些实施例”、“其他实施例”、“理想实施例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或者特征包含于本申请的至少一个实施例或示例中。在本说明书中，对上述术语的示意性描述不一定指的是相同的实施例或示例。
以上实施例的各技术特征可以进行任意的组合，为使描述简洁，未对上述实施例中的各个技术特征所有可能的组合都进行描述，然而，只要这些技术特征的组合不存在矛盾，都应当认为是本说明书记载的范围。
以上所述实施例仅表达了本申请的几种实施方式，其描述较为具体和详细，但并不能因此而理解为对发明专利范围的限制。应当指出的是，对于本领域的普通技术人员来说，在不脱离本申请构思的前提下，还可以做出若干变形和改进，这些都属于本申请的保护范围。因此，本申请专利的保护范围应以所附权利要求为准。
Claims (10)
- 一种晶闸管电压监测板检测系统，包括：信号发生装置，与待检测监测板的输入端连接，用于向所述待检测监测板发出待验证功能的测试信号；采集装置，与所述信号发生装置、所述待检测监测板的输出端以及所述待检测监测板内部的多个待检测节点连接，用于根据所述测试信号和所述待检测监测板接收到所述测试信号后输出的光脉冲信号，确定所述待检测监测板的工作状态，并依次获取在所述待检测监测板处于所述工作状态时的各待检测节点的波形信号，其中，所述待检测监测板的工作状态与所述待验证功能对应，所述工作状态包括正电压监测状态、负电压监测状态、晶闸管击穿电压监测状态中的一种；处理器，与所述采集装置连接，用于根据所述待检测监测板处于所述工作状态时的各待检测节点的波形信号，以及所述待检测监测板的参数，确定所述待检测监测板的健康状态。
- 根据权利要求1所述的系统，其中所述采集装置包括：节点切换模块，包括多个信号输入口和一个信号输出口，所述节点切换模块的多个信号输入口分别与所述待检测监测板的多个待检测节点一一对应连接，所述节点切换模块的控制端与所述处理器连接，用于在所述处理器的控制下，依次导通各信号输入口与所述信号输出口之间的通路；光电转换模块，与所述待检测监测板的输出端连接，用于将所述待检测监测板输出的光脉冲信号转换为反馈信号；波形采集模块，分别与所述信号发生装置、所述节点切换模块的信号输出口和所述光电转换模块连接，用于根据所述测试信号和所述反馈信号，确定所述待检测监测板的工作状态，并获取目标待检测节点的波形信号，其中，所述目标待检测节点与当前导通的信号输入口对应。
- 根据权利要求2所述的系统，其中所述波形采集模块还用于，分别将采集到的与所述待检测监测板的同一工作状态对应的各待检测节点的波形信号对齐并进行归一化处理。
- 根据权利要求2所述的系统，其中所述节点切换模块还包括：多个滤波单元，所述多个滤波单元与所述多个信号输入口一一对应连接，用于对对应的信号输入口输入的波形信号进行滤波处理。
- 根据权利要求1所述的系统，其中所述信号发生装置包括：电压源、脉冲发生模块，所述电压源与所述待检测监测板的电源端口连接，所述脉冲发生模块与所述待检测监测板的输入端连接；所述电压源，用于为所述待检测监测板供电，其中，所述电压源输出的电压信号的频率和幅值均为对应的预设值；所述脉冲发生模块，用于输出所述测试信号以验证所述待检测监测板的各待验证功能，其中，所述测试信号为预设脉宽和预设幅值的脉冲信号。
- 根据权利要求5所述的系统，其中所述信号发生装置还包括：相位调整模块，所述相位调整模块设置在电压源和所述脉冲发生模块与所述待检测监测板之间，分别与所述待检测监测板的电源端口、所述待检测监测板的输入端、所述电压源、所述脉冲发生模块连接，用于分别调整所述电压信号和所述测试信号的相位，以使所述电压信号和所述测试信号的相位差为预设相位差，并将调整后的电压信号传输至所述待检测监测板的电源端口，将调整后的所述测试信号传输至所述待检测监测板的输入端。
- 根据权利要求1-6任一项所述的系统，其中所述系统还包括：阻抗测量装置，分别与所述处理器和所述待检测监测板的预设端口连接，用于测量所述待检测监测板的预设端口在预设条件下的等效阻抗值，并将所述等效阻抗值传输至所述处理器；所述处理器还用于，根据所述待检测监测板处于所述工作状态时的各待检测节点的波形信号、所述待检测监测板的参数、所述待检测监测板的预设端口在预设条件下的等效阻抗值，确定所述待检测监测板的健康状态。
- 根据权利要求1-6任一项所述的系统，其中所述系统还包括：隔离电源，所述隔离电源的输入端用于与市电连接，所述隔离电源的输出端分别与所述信号发生装置、所述采集装置、所述处理器连接，用于分别为所述信号发生装置、所述采集装置、所述处理器供电。
- 根据权利要求1-6任一项所述的系统，其中所述待检测监测板的待验证功能包括正电压监测功能、负电压监测功能、晶闸管击穿电压监测功能中的一种。
- 一种晶闸管电压监测板检测方法，包括：向待检测监测板发出待验证功能的测试信号；获取所述待检测监测板接收到所述测试信号后输出的光脉冲信号；根据所述测试信号和所述光脉冲信号，确定所述待检测监测板的工作状态；分别获取在所述待检测监测板处于所述工作状态时的各待检测节点的波形信号，其中，所述待检测监测板的工作状态与所述待验证功能对应，所述工作状态包括正电压监测状态、负电压监测状态、晶闸管击穿电压监测状态中的一种；根据所述待检测监测板处于所述工作状态时的各待检测节点的波形信号，以及所述待检测监测板的参数，确定所述待检测监测板的健康状态。
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