CN111257629B - New energy station power characteristic detection method, device and system - Google Patents
New energy station power characteristic detection method, device and system Download PDFInfo
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Abstract
The invention provides a method, a device and a system for detecting power characteristics of a new energy station, wherein the method comprises the following steps: identifying a test type of a current operation; acquiring parameter information corresponding to the test type according to the test type; setting parameters of the power detector according to the parameter information; and the power detector detects the power of one or more devices of the new energy station and outputs and displays the detection result. The method can realize the function of automatically adjusting the parameters of the power detector according to the test type, overcomes the defect that in the prior art, a worker needs to manually set the parameters of the power detector according to the device to be detected, and further improves the power detection efficiency of the device in the new energy station.
Description
Technical Field
The invention relates to the technical field of device detection, in particular to a method, a device and a system for detecting power characteristics of a new energy station.
Background
With the rapid development of economic society and industry, the consumption of traditional energy sources is increased day by day, and the environmental pollution is increased more and more; therefore, people begin to develop new energy, which generally refers to renewable energy sources developed and utilized on the basis of new technologies, including solar energy, biomass energy, wind energy, geothermal energy, wave energy, tidal energy and the like, so that a new energy station taking various new energy sources as a core is built.
At present, when power detection is carried out on devices in a new energy station, a worker needs to manually set parameters of a power detector according to the devices to be detected, so that detection of the devices is not only dependent on technical experience of the worker, but also the efficiency of power detection on the devices in the new energy station is reduced.
Disclosure of Invention
In order to solve the technical problems, the invention provides a method, a device and a system for detecting the power characteristics of a new energy station, which are used for improving the power detection efficiency of devices in the new energy station.
The embodiment of the invention provides a method for detecting power characteristics of a new energy station, which comprises the following steps:
identifying a test type of a current operation;
acquiring parameter information corresponding to the test type according to the test type;
setting parameters of a power detector according to the parameter information;
the power detector detects the power of one or more devices of the new energy station and outputs and displays the detection result, and the method specifically comprises the following steps: acquiring a signal to be detected of the device;
the power detector is used for carrying out first detection on the signal to be detected to obtain a first detection result;
judging whether the first detection result exceeds or is lower than the test range of the power detector or not according to the first detection result;
when the first detection result is judged to exceed the test range of the power detector, performing power attenuation processing on the signal to be detected; the power detector is used for detecting the signal to be detected after the attenuation processing to obtain a second detection result;
when the first detection result is judged to be lower than the test range of the power detector, performing power gain processing on the signal to be detected; the power detector is used for detecting the signal to be detected after the gain processing to obtain a second detection result;
when the first detection result is judged to be in the test range of the power detector, outputting and displaying the first detection result as the detection result;
judging whether the second detection result exceeds or is lower than the test range of the power detector or not according to the second detection result;
when the second detection result is judged to exceed the test range of the power detector, continuing to perform power attenuation processing on the signal to be detected until the second detection result is in the test range of the power detector;
when the second detection result is judged to be lower than the test range of the power detector, continuing to perform power gain processing on the signal to be detected until the second detection result is in the test range of the power detector;
when the second detection result is judged to be in the test range of the power detector, acquiring the second detection result; acquiring power processing information before the second detection result; when power attenuation information is carried out before the second detection result is obtained, obtaining the detection result according to the second detection result and the power attenuation information; when power gain information is carried out before the second detection result is obtained, obtaining the detection result according to the second detection result and the power gain information;
the first detection result is a, the attenuation coefficient during power attenuation processing is α, the gain coefficient during power gain processing is β, the number of times of power processing performed on the signal to be detected is n, the number of times of power attenuation processing performed on the signal to be detected is i, and the detection result is P, that is:
in one embodiment, acquiring the signal to be detected of the device comprises:
correcting the signal to be detected; the method specifically comprises the following steps:
acquiring a transmission waveform of the signal to be detected;
comparing the transmission waveform of the signal to be detected with preset threshold information, and taking the wave band of which the transmission waveform of the signal to be detected is larger than the preset threshold information as an instantaneous peak value of the signal to be detected;
acquiring time information corresponding to the instantaneous peak value of the signal to be detected;
acquiring correction information corresponding to the instantaneous peak value according to the instantaneous peak value of the signal to be detected;
acquiring a frequency band region for processing the signal to be detected according to the time information by adopting a preset amplitude limiting filtering algorithm, and carrying out amplitude limiting processing operation on the signal to be detected in the frequency band region according to the correction information;
the clipping filtering algorithm comprises the following steps:
acquiring two sampling signals separated by a preset time interval, and acquiring allowed maximum difference value information according to the two sampling signals;
acquiring two latest sampling signals in an amplitude limiting filtering storage unit, and comparing the two sampling signals to acquire difference comparison information; selecting a filtering calculation rule according to the difference comparison information to obtain a filtering result;
obtaining the change rule of the sampling signal according to the filtering result for a plurality of times; updating the maximum difference value information allowed by the sampling signal according to the change rule;
before the signal to be detected is corrected, the method further comprises the following steps:
judging whether the length of the signal to be detected is greater than the length of a preset signal or not, and when the length of the signal to be detected is less than the length of the preset signal, correcting the signal to be detected;
when the length of the signal to be detected is greater than the preset signal length, performing median filtering on the signal to be detected according to a preset window function of the median filtering, and filtering a baseline drift signal in the signal to be detected; and adjusting the window function of median filtering according to the frequency and relative amplitude of the signal to be detected after median filtering until the energy of the signal to be detected after median filtering in a preset frequency band reaches the maximum value after wavelet processing.
In one embodiment, the power detector detects the power of one or more devices of the new energy station, and after outputting and displaying the detection result, the method further includes:
acquiring the running state information of the device according to the detection result;
acquiring device product information, historical maintenance information and position information corresponding to the device in a memory;
acquiring service life information and maintenance information of the device according to the running state information, the device product information and the maintenance information;
and displaying the service life information, the maintenance information and the position information of the device to workers.
In one embodiment, the process of detecting the power of one or more devices of the new energy station by the power detector further includes:
conducting test is carried out on each electronic device according to a preset test circuit, conducting information D of each electronic device is obtained, and each electronic device is protected based on amplitude value difference in the conducting test process;
where U2 represents the electronics based output voltage; u1 represents the electronics based input voltage; r represents a resistance value of the electronic device; i represents a current value based on the electronic device;
representation based on amplitude value differences
A protection function for the electronic device;
determining transient state information F of each electronic device in a transient state short circuit state according to a transient state short circuit detection mode;
wherein,
a difference between the virtual output current and the virtual input current representing a transient short; t represents a transient short detection period; t represents a time detection time;
determining a first state S1 of each electronic device at different current and a second state S2 at different voltage according to the transient information F and the conduction information D;
determining an impact factor for each electronic device based on each new energy unit of the new energy station
And correlation factor
The parallel stage determines the intercommunication information B between the connected electronic devices;
calculating the working state S of each electronic device:
wherein L () represents a state adjustment function based on the interworking information B;
and intelligently determining the device performance of each electronic device based on a state database according to the working state S.
An apparatus for detecting power characteristics of a new energy station, the apparatus comprising: the device comprises an identification unit, a parameter adjusting unit, a power detector and a display unit; wherein,
the identification unit is used for identifying the test type of the current operation and transmitting the test type to the parameter adjusting unit; the parameter adjusting unit is used for acquiring parameter information corresponding to the test type according to the test type and setting parameters of the power detector according to the parameter information; and the power detector is used for detecting the power of one or more devices of the new energy station and transmitting the detection result to the display unit for displaying.
In one embodiment, the power detector comprises: the circuit comprises an input end IN, an output end OUT, a first reference level V1, a second reference level V2, a capacitor C1, a capacitor C2, a capacitor C3, a capacitor C4, a capacitor C5, a transistor T, a resistor R1, a resistor R2, an output generator G, a diode voltage compensator VR and an amplifier A;
the input terminal IN is connected with the + input terminal of the amplifier A through the capacitor C1 and the capacitor C2, and the-input terminal of the amplifier A is connected with a common-mode voltage Vcm; the capacitor C3 and the capacitor C4 are connected in parallel and between the "+" input and the output of the amplifier A, which is connected to the output generator G; the first reference level V1 is connected with the transistor T through a resistor R1; the base electrode of the transistor T is connected with the output generator G; the capacitor C5 and the resistor R2 are connected in parallel and are connected between the base and collector of a transistor T, and the second reference level V2 is connected at the collector of the transistor T; the diode voltage compensator VR is connected with the output generator G; the output end of the output generator G is connected with the output end OUT.
A new energy station power characteristic detection system, the system comprising: the detection end and the server end; wherein,
the detection end is used for being carried by staff of the new energy station; the detection end comprises an identification module, a parameter adjusting module and a test module; wherein,
the identification module is used for identifying the test type of the current operation and transmitting the test type to the parameter adjusting module; the parameter adjusting module is used for acquiring parameter information corresponding to the test type according to the test type and transmitting the parameter information to the test module; the test module comprises a power detector; the test module is used for setting parameters of the power detector according to the parameter information; the power detector is used for detecting the power of one or more devices of the new energy station and transmitting the detection result to the test module; the test module is further used for transmitting the detection result to the server side;
and the server is used for receiving the detection result transmitted by the detection end and outputting and displaying the detection result.
In one embodiment, the server side comprises an acquisition module, a pre-estimation module, a verification module and a memory; wherein,
the acquisition module is used for receiving the detection result transmitted by the detection end, acquiring device product information and historical working state information of a device corresponding to the detection result from the memory according to the detection result, and transmitting the device product information and the historical working state information to the pre-estimation module;
the estimation module is used for acquiring a detection result range of the device according to the device product information and the historical working state information of the device and transmitting the detection result range of the device to the verification module;
the checking module is used for comparing the detection result of the device with the detection result range, and transmitting re-detection information to the detection end to remind a worker to re-test when the detection result is not in the detection result range; and when the detection result is in the detection result range, transmitting the detection result to the memory for storage.
In an embodiment, the obtaining module of the server is further configured to receive the detection result obtained after the detection end retests a certain device, and transmit the retested detection result to the verification module;
the verification module is used for comparing the detection result range transmitted by the estimation module with the detection result after retesting, and transmitting and storing the detection result to the memory when the detection result is in the detection result range; when the detection result is not in the detection result range, transmitting an abnormal explanation request instruction to the detection end, and transmitting abnormal condition information of the device to the server end through the detection end by a worker according to the abnormal explanation request instruction;
and the acquisition module of the server is used for receiving the abnormal condition information of the device transmitted by the detection end, storing the detection result in the memory and marking the abnormal condition information on the corresponding detection result.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.
Drawings
Fig. 1 is a schematic structural diagram of a method for detecting power characteristics of a new energy station according to the present invention;
fig. 2 is a schematic structural diagram of a new energy station power characteristic detection apparatus provided in the present invention;
fig. 3 is a schematic structural diagram of a power detector of a new energy station power characteristic detection apparatus according to the present invention;
fig. 4 is a schematic structural diagram of a new energy station power characteristic detection system provided in the present invention.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.
The embodiment of the invention provides a method for detecting power characteristics of a new energy station, which comprises the following steps of:
identifying a test type of a current operation;
acquiring parameter information corresponding to the test type according to the test type;
setting parameters of the power detector according to the parameter information;
the power detector detects the power of one or more devices of the new energy station and outputs and displays the detection result, and the method specifically comprises the following steps:
acquiring a signal to be detected of a device;
the power detector is used for detecting a signal to be detected for the first time to obtain a first detection result;
judging whether the first detection result exceeds or is lower than the test range of the power detector or not according to the first detection result;
when the first detection result is judged to exceed the test range of the power detector, performing power attenuation processing on the signal to be detected; the power detector is used for detecting the signal to be detected after the attenuation processing to obtain a second detection result;
when the first detection result is judged to be lower than the test range of the power detector, performing power gain processing on the signal to be detected; the power detector is used for detecting the signal to be detected after the gain processing to obtain a second detection result;
when the first detection result is judged to be in the test range of the power detector, outputting and displaying the first detection result as a detection result;
judging whether the second detection result exceeds or is lower than the test range of the power detector or not according to the second detection result;
when the second detection result exceeds the test range of the power detector, continuing to perform power attenuation processing on the signal to be detected until the second detection result is in the test range of the power detector;
when the second detection result is judged to be lower than the test range of the power detector, continuing to perform power gain processing on the signal to be detected until the second detection result is in the test range of the power detector;
when the second detection result is judged to be in the test range of the power detector, acquiring the second detection result; acquiring power processing information before a second detection result; when the power attenuation information is carried out before the second detection result is obtained, obtaining the detection result according to the second detection result and the power attenuation information; and when the power gain information is performed before the second detection result is obtained, obtaining the detection result according to the second detection result and the power gain information. According to the technical scheme, the signal to be detected is subjected to attenuation or gain processing for multiple times, so that the signal to be detected is within the test range of the power detector, and the test range of the power detector is further improved; the detection result of the signal to be detected after attenuation or gain is obtained according to the power attenuation information or the power gain information and the detection result of the power detector on the signal to be detected after attenuation or gain;
the first detection result is a, the attenuation coefficient during power attenuation processing is α, the gain coefficient during power gain processing is β, the number of times of power attenuation processing performed on the signal to be detected is n, the number of times of power attenuation processing performed on the signal to be detected is i, and the detection result is P, that is:
according to the technical scheme, the power detector is used for testing the signal to be detected for the first time, and whether the first detection result exceeds or is lower than the test range of the power detector is judged according to the first test result, so that whether the signal to be detected exceeds the test range of the power detector is judged; when the first detection result is judged to be in the test range of the power detector, the first detection result is output and displayed as a detection result, so that the test of a signal to be detected is realized through the power detector; when the first detection result is judged to exceed the test range of the power detector, power attenuation processing is carried out on the signal to be detected; when the first detection result is judged to be lower than the test range of the power detector, performing power gain processing on the signal to be detected; the attenuation or gain processing of the signal to be detected is further realized according to the test range of the power detector, so that the test range of the power detector is effectively enlarged.
The working principle of the method is as follows: identifying a test type of a current operation; acquiring parameter information corresponding to the test type according to the test type; setting parameters of the power detector according to the parameter information; and the power detector detects the power of one or more devices of the new energy station and outputs and displays the detection result.
The method has the beneficial effects that: by identifying the test type of the current operation, the acquisition of the parameter information corresponding to the test type is realized; the setting of the parameters of the power detector is realized according to the acquired parameter information; the power detector is used by a worker to detect the power of one or more devices of the new energy station, and the detection result is output and displayed, so that the power characteristic detection of the devices in the new energy station is realized; the method can realize the function of automatically adjusting the parameters of the power detector according to the test type, overcomes the defect that in the prior art, a worker needs to manually set the parameters of the power detector according to the device to be detected, and further improves the power detection efficiency of the device in the new energy station.
In a particular embodiment, the test type includes one or more of a conduction test, a coupling test. Parameters of the power detector include a conduction parameter and a coupling parameter.
According to the technical scheme, the detection result of the signal to be detected after one or more times of attenuation or gain is obtained; for example: carrying out 3 times of power processing on a certain signal to be detected, wherein the power processing is 1 time of attenuation and 2 times of gain respectively, the attenuation coefficient is 10, the gain is 0.3, and the first detection result is 100; the detection result is 90.
In one embodiment, the steps of: acquiring a signal to be detected of a device; further comprising:
correcting the signal to be detected; the method specifically comprises the following steps:
acquiring a transmission waveform of a signal to be detected;
comparing the transmission waveform of the signal to be detected with preset threshold information, and taking the wave band of which the transmission waveform is larger than the preset threshold information as the instantaneous peak value of the signal to be detected;
acquiring time information corresponding to an instantaneous peak value of a signal to be detected;
acquiring correction information corresponding to the instantaneous peak value according to the instantaneous peak value of the signal to be detected;
acquiring a frequency band region for processing a signal to be detected according to the time information by adopting a preset amplitude limiting filtering algorithm, and carrying out amplitude limiting processing operation on the signal to be detected in the frequency band region according to the correction information; according to the technical scheme, the transmission waveform of the signal to be detected is compared with the preset threshold value information, so that the instantaneous peak value of the signal to be detected is obtained, the amplitude limiting processing operation of the signal to be detected according to the time information and the correction information is realized by adopting the preset amplitude limiting filtering algorithm, and the accuracy of subsequent signal processing to be detected is improved.
A clipping filtering algorithm comprising:
acquiring two sampling signals separated by a preset time interval, and acquiring allowed maximum difference value information according to the two sampling signals;
acquiring two latest sampling signals in an amplitude limiting filtering storage unit, and comparing the two sampling signals to acquire difference comparison information; selecting a filtering calculation rule according to the difference comparison information to obtain a filtering result;
obtaining the change rule of the sampling signal according to the multiple filtering results; updating the maximum difference value information allowed by the sampling signal according to the change rule; the filtering processing of the signal to be detected is realized by adopting the amplitude limiting filtering algorithm.
The method comprises the following steps: correcting the signal to be detected; before, still include:
judging whether the length of the signal to be detected is greater than the length of a preset signal or not, and when the length of the signal to be detected is less than the length of the preset signal, correcting the signal to be detected;
when the length of the signal to be detected is greater than the preset signal length, performing median filtering on the signal to be detected according to a preset window function of the median filtering, and filtering a baseline drift signal in the signal to be detected; and adjusting the window function of median filtering according to the frequency and relative amplitude of the signal to be detected after median filtering until the energy of the signal to be detected after median filtering in a preset frequency band reaches the maximum value after wavelet processing. According to the technical scheme, when the length of the signal to be detected is greater than the preset signal length, the signal to be detected is subjected to median filtering, so that the baseline wandering signal in the signal to be detected is filtered, the error of the signal to be detected is further reduced, and the accuracy of processing the signal to be detected is improved.
In one embodiment, the steps of: the power detector detects the power of one or more devices of the new energy station and outputs and displays the detection result; then also comprises the following steps:
acquiring the running state information of the device according to the detection result;
acquiring device product information, historical maintenance information and position information corresponding to devices in a memory;
acquiring service life information and maintenance information of the device according to the running state information, the device product information and the maintenance information;
and displaying the service life information, the maintenance information and the position information of the device to workers. According to the technical scheme, the operation state information of the device is acquired according to the detection result; acquiring device product information, historical maintenance information and position information corresponding to the devices in the memory; according to the running state information, the device product information and the maintenance information, the service life information and the maintenance information of the device are acquired; and the service life information, the maintenance information and the position information of the device are displayed to the working personnel, so that the working personnel can timely maintain and process the device according to the service life information and the maintenance information of the device.
In one embodiment, the process of detecting the power of one or more devices of the new energy station by the power detector further includes:
conducting test is carried out on each electronic device according to a preset test circuit, conducting information D of each electronic device is obtained, and each electronic device is protected based on amplitude value difference in the conducting test process;
wherein U2 represents an electronics-based outputA voltage; u1 represents the electronics based input voltage; r represents a resistance value of the electronic device; i represents a current value based on the electronic device;
representation based on amplitude value differences
A protection function for the electronic device;
determining transient state information F of each electronic device in a transient state short circuit state according to a transient state short circuit detection mode;
wherein,
a difference between the virtual output current and the virtual input current representing a transient short; t represents a transient short detection period; t represents a time detection time;
determining a first state S1 of each electronic device at different current and a second state S2 at different voltage according to the transient information F and the conduction information D;
determining an impact factor for each electronic device based on each new energy unit of the new energy station
And correlation factor
The parallel stages determining the mutual relationship between connected electronic devicesCommunicating information B;
calculating the working state S of each electronic device:
wherein L () represents a state adjustment function based on the interworking information B;
and intelligently determining the device performance of each electronic device based on a state database according to the working state S.
The embodiment has the advantages that the conduction information D of each electronic device is determined through the preset test circuit, the transient information of each electronic device is determined through the transient short circuit detection mode, the first state and the second state of each electronic device are further determined, the working state of each electronic device is conveniently and effectively determined through the influence and the association of the new energy unit on each device and the intercommunication information among the electronic devices, the device performance of the electronic devices is effectively determined, and the calculation intelligence is improved.
A new energy station power characteristic detecting apparatus, as shown in fig. 2, the apparatus includes: an identification unit 21, a parameter adjustment unit 22, a power detector 23 and a display unit 24; wherein,
the identification unit 21 is used for identifying the test type of the current operation and transmitting the test type to the parameter adjusting unit; a parameter adjusting unit 22, configured to obtain parameter information corresponding to the test type according to the test type, and set a parameter of the power detector according to the parameter information; and the power detector 23 is used for detecting the power of one or more devices of the new energy station and transmitting the detection result to the display unit 24 for displaying.
The working principle of the device is as follows: the identifying unit 21 identifies the test type of the current operation and transmits the test type to the parameter adjusting unit 22; the parameter adjusting unit 22 acquires parameter information corresponding to the test type according to the test type, and sets parameters of the power detector 23 according to the parameter information; the power detector 23 detects the power of one or more devices of the new energy station, and transmits the detection result to the display unit 24 for display.
The beneficial effect of above-mentioned device lies in: the acquisition of the test type of the current operation is realized through the identification unit; the parameter information corresponding to the test type is acquired according to the test type through the parameter adjusting unit; the setting of the parameters of the power detector is realized according to the acquired parameter information; the power detector is used by a worker to detect the power of one or more devices of the new energy station, and the detection result is transmitted to the display unit to be displayed, so that the power characteristic detection of the devices in the new energy station is realized; the device realizes the function of automatically adjusting the parameters of the power detector according to the test type through the parameter adjusting unit, overcomes the defect that in the prior art, a worker needs to manually set the parameters of the power detector according to the device to be detected, and further improves the power detection efficiency of the device in the new energy station.
In one embodiment, as shown in fig. 3, a power detector, includes: the circuit comprises an input end IN, an output end OUT, a first reference level V1, a second reference level V2, a capacitor C1, a capacitor C2, a capacitor C3, a capacitor C4, a capacitor C5, a transistor T, a resistor R1, a resistor R2, an output generator G, a diode voltage compensator VR and an amplifier A;
the input end IN is connected with a plus input end of the amplifier A through a capacitor C1 and a capacitor C2, and a minus input end of the amplifier A is connected with a common-mode voltage Vcm; the capacitor C3 is connected in parallel with the capacitor C4 and is connected between the "+" input end and the output end of the amplifier A, and the output end of the amplifier A is connected with the output generator G; the first reference level V1 is connected to the transistor T through a resistor R1; the base electrode of the transistor T is connected with the output generator G; the capacitor C5 and the resistor R2 are connected in parallel and are connected between the base and collector of a transistor T, and the second reference level V2 is connected at the collector of the transistor T; the diode voltage compensator VR is connected with the output generator G; the output terminal of the output generator G is connected to the output terminal OUT. The function of the power detector is realized by the device.
A new energy station power characteristic detection system, as shown in fig. 4, the system includes: a detection end 41 and a server end 42; wherein,
the detection end 41 is used for being carried by a worker of the new energy station; the detection terminal 41 comprises an identification module 411, a parameter adjusting module 412 and a test module 413; wherein,
the identifying module 411 is configured to identify a test type of a current operation, and transmit the test type to the parameter adjusting module 412; the parameter adjusting module 412 is configured to obtain parameter information corresponding to the test type according to the test type, and transmit the parameter information to the test module 413; a test module 413 including a power detector; the test module is used for setting parameters of the power detector according to the parameter information; the power detector is used for detecting the power of one or more devices of the new energy station and transmitting the detection result to the test module 413; the testing module 413 is further configured to transmit the detection result to the server 42;
and the server 42 is used for receiving the detection result transmitted by the detection end 41 and outputting and displaying the detection result.
The working principle of the system is as follows: a worker carries the detection terminal 41 to detect the power of a certain device in the new energy station; the identification module 411 of the detection terminal 41 identifies the test type of the current operation and transmits the test type to the parameter adjusting module 412; the parameter adjusting module 412 obtains parameter information corresponding to the test type according to the test type, and transmits the parameter information to the test module 413; the test module 413 sets the parameters of the power detector according to the parameter information transmitted by the parameter adjusting module 412; the power detector detects the power of one or more devices of the new energy station and transmits the detection result to the test module 413; the test module 413 transmits and displays the detection result to the server 42.
The beneficial effect of above-mentioned system lies in: the identification of the test type of the current operation is realized through the identification module of the detection end; the parameter information corresponding to the test type is acquired according to the test type through the parameter adjusting module; the test module realizes the setting of the parameters of the power detector according to the parameter information acquired by the parameter adjusting module; the power detector is used by a worker to detect the power of one or more devices of the new energy station, and the detection result is transmitted to the server side to be displayed, so that the power characteristic detection of the devices in the new energy station is realized; according to the system, the function of automatically adjusting the parameters of the power detector according to the test type is realized through the parameter adjusting module and the test module, the defect that in the prior art, a worker needs to manually set the parameters of the power detector according to the device to be detected is overcome, and the power detection efficiency of the device in the new energy station is further improved.
In one embodiment, the server side comprises an acquisition module, a pre-estimation module, a verification module and a memory; wherein,
the acquisition module is used for receiving the detection result transmitted by the detection end, acquiring device product information and historical working state information of the device corresponding to the detection result from the memory according to the detection result, and transmitting the device product information and the historical working state information to the pre-estimation module;
the estimation module is used for acquiring the detection result range of the device according to the device product information and the historical working state information of the device and transmitting the detection result range of the device to the verification module;
the checking module is used for comparing the detection result of the device with the detection result range, and transmitting re-detection information to the detection end to remind a worker to re-test when the detection result is not in the detection result range; and when the detection result is in the detection result range, transmitting the detection result to a memory for storage. In the technical scheme, the acquisition module is used for receiving the detection result transmitted by the detection end and acquiring the device product information and the historical working state information of the device corresponding to the detection result in the memory; the detection result range of the device is obtained according to the product information and the historical working state information of the device through the estimation module; the detection result of the device is compared with the detection result range through the verification module, and when the detection result is not in the detection result range, the retest information is transmitted to the detection end to remind a worker to retest; when the detection result is in the detection result range, transmitting the detection result to a memory for storage; therefore, the accuracy of the system for acquiring the detection result is improved through the technical scheme.
In one embodiment, the acquisition module of the server is further configured to receive a detection result obtained by retesting a certain device by the detection terminal, and transmit the retested detection result to the verification module;
the verification module is used for comparing the detection result range transmitted by the estimation module with the detection result after retesting, and transmitting the detection result to the memory for storage when the detection result is in the detection result range; when the detection result is not in the detection result range, transmitting an abnormal explanation request instruction to the detection end, and transmitting abnormal condition information of the device to the server end through the detection end by a worker according to the abnormal explanation request instruction;
and the acquisition module of the server is used for receiving the abnormal condition information of the device transmitted by the detection end, storing the detection result in the memory and marking the abnormal condition information on the corresponding detection result. According to the technical scheme, the re-comparison of the detection results after re-testing is realized through the verification module, and when the detection results are within the detection result range, the detection results are transmitted to the storage for storage; when the detection result is not in the detection result range, transmitting an abnormal explanation request instruction to the detection end, transmitting abnormal condition information of the device to the server end through the detection end by a worker according to the abnormal explanation request instruction, and storing the detection result and the corresponding abnormal condition information in a memory; therefore, the retest of the detection result is realized, and meanwhile, the description of the abnormal device still exists after retest, so that the monitoring of the device by the staff at the server end is further facilitated.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (5)
1. A new energy station power characteristic detection method is characterized by comprising the following steps:
identifying a test type of a current operation;
acquiring parameter information corresponding to the test type according to the test type;
setting parameters of a power detector according to the parameter information;
the power detector detects the power of one or more devices of the new energy station and outputs and displays the detection result, and the method specifically comprises the following steps:
acquiring a signal to be detected of the device;
the power detector is used for carrying out first detection on the signal to be detected to obtain a first detection result;
judging whether the first detection result exceeds or is lower than the test range of the power detector or not according to the first detection result;
when the first detection result is judged to exceed the test range of the power detector, performing power attenuation processing on the signal to be detected; the power detector is used for carrying out secondary detection on the signal to be detected after the attenuation processing to obtain a second detection result;
when the first detection result is judged to be lower than the test range of the power detector, performing power gain processing on the signal to be detected; the power detector is used for carrying out secondary detection on the signal to be detected after the gain processing to obtain a second detection result;
when the first detection result is judged to be in the test range of the power detector, outputting and displaying the first detection result as the detection result;
judging whether the second detection result exceeds or is lower than the test range of the power detector or not according to the second detection result;
when the second detection result is judged to exceed the test range of the power detector, continuing to perform power attenuation processing on the signal to be detected until the second detection result is in the test range of the power detector;
when the second detection result is judged to be lower than the test range of the power detector, continuing to perform power gain processing on the signal to be detected until the second detection result is in the test range of the power detector;
when the second detection result is judged to be in the test range of the power detector, acquiring the second detection result; acquiring power processing information before the second detection result; when power attenuation information is carried out before the second detection result is obtained, obtaining the detection result according to the second detection result and the power attenuation information; when power gain information is carried out before the second detection result is obtained, obtaining the detection result according to the second detection result and the power gain information;
the first detection result is a, the attenuation coefficient during power attenuation processing is α, the gain coefficient during power gain processing is β, the number of times of power processing performed on the signal to be detected is n, the number of times of power attenuation processing performed on the signal to be detected is i, and the detection result is P, that is:
wherein acquiring a signal to be detected of the device comprises:
correcting the signal to be detected; the method specifically comprises the following steps:
acquiring a transmission waveform of the signal to be detected;
comparing the transmission waveform of the signal to be detected with preset threshold information, and taking the wave band of which the transmission waveform of the signal to be detected is larger than the preset threshold information as an instantaneous peak value of the signal to be detected;
acquiring time information corresponding to the instantaneous peak value of the signal to be detected;
acquiring correction information corresponding to the instantaneous peak value according to the instantaneous peak value of the signal to be detected;
acquiring a frequency band region for processing the signal to be detected according to the time information by adopting a preset amplitude limiting filtering algorithm, and carrying out amplitude limiting processing operation on the signal to be detected in the frequency band region according to the correction information;
the clipping filtering algorithm comprises the following steps:
acquiring two sampling signals separated by a preset time interval, and acquiring allowed maximum difference value information according to the two sampling signals;
acquiring two latest sampling signals in an amplitude limiting filtering storage unit, and comparing the two sampling signals to acquire difference comparison information; selecting a filtering calculation rule according to the difference comparison information to obtain a filtering result;
obtaining the change rule of the sampling signal according to the filtering result for a plurality of times; updating the maximum difference value information allowed by the sampling signal according to the change rule;
before the signal to be detected is corrected, the method further comprises the following steps:
judging whether the length of the signal to be detected is greater than the length of a preset signal or not, and when the length of the signal to be detected is less than the length of the preset signal, correcting the signal to be detected;
when the length of the signal to be detected is greater than the preset signal length, performing median filtering on the signal to be detected according to a preset window function of the median filtering, and filtering a baseline drift signal in the signal to be detected; and adjusting the window function of median filtering according to the frequency and relative amplitude of the signal to be detected after median filtering until the energy of the signal to be detected after median filtering in a preset frequency band reaches the maximum value after wavelet processing.
2. The method of claim 1, wherein the power detector detects power of one or more devices of the new energy station, and the outputting and displaying the detection result further comprises:
acquiring the running state information of the device according to the detection result;
acquiring device product information, historical maintenance information and position information corresponding to the device in a memory;
acquiring service life information and maintenance information of the device according to the running state information, the device product information and the maintenance information;
and displaying the service life information, the maintenance information and the position information of the device to workers.
3. The method of claim 1, wherein the power detector detecting power of one or more devices of the new energy site further comprises:
conducting test is carried out on each electronic device according to a preset test circuit, conducting information D of each electronic device is obtained, and each electronic device is protected based on amplitude value difference in the conducting test process;
where U2 represents the electronics based output voltage; u1 represents the electronics based input voltage; r represents a resistance value of the electronic device; i represents a current value based on the electronic device;
determining transient state information F of each electronic device in a transient state short circuit state according to a transient state short circuit detection mode;
wherein,
a difference between the virtual output current and the virtual input current representing a transient short; t represents a transient short detection period; t represents a time detection time;
determining a first state S1 of each electronic device at different current and a second state S2 at different voltage according to the transient information F and the conduction information D;
determining an impact factor for each electronic device based on each new energy unit of the new energy station
And correlation factor
The parallel stage determines the intercommunication information B between the connected electronic devices;
calculating the working state S of each electronic device:
wherein L () represents a state adjustment function based on the interworking information B;
and intelligently determining the device performance of each electronic device based on a state database according to the working state S.
4. A new energy station power characteristic detection device, characterized in that, the device includes: the device comprises an identification unit, a parameter adjusting unit, a power detector and a display unit; wherein,
the identification unit is used for identifying the test type of the current operation and transmitting the test type to the parameter adjusting unit; the parameter adjusting unit is used for acquiring parameter information corresponding to the test type according to the test type and setting parameters of the power detector according to the parameter information; the power detector is used for detecting the power of one or more devices of the new energy station and transmitting the detection result to the display unit for displaying;
the power detector, comprising: the circuit comprises an input end IN, an output end OUT, a first reference level V1, a second reference level V2, a capacitor C1, a capacitor C2, a capacitor C3, a capacitor C4, a capacitor C5, a transistor T, a resistor R1, a resistor R2, an output generator G, a diode voltage compensator VR and an amplifier A;
the input terminal IN is connected with the + input terminal of the amplifier A through the capacitor C1 and the capacitor C2, and the-input terminal of the amplifier A is connected with a common-mode voltage Vcm; the capacitor C3 and the capacitor C4 are connected in parallel and between the "+" input and the output of the amplifier A, which is connected to the output generator G; the first reference level V1 is connected with the transistor T through a resistor R1; the base electrode of the transistor T is connected with the output generator G; the capacitor C5 and the resistor R2 are connected in parallel and are connected between the base and collector of a transistor T, and the second reference level V2 is connected at the collector of the transistor T; the diode voltage compensator VR is connected with the output generator G; the output end of the output generator G is connected with the output end OUT;
the device, still include: acquiring a signal to be detected of the device;
wherein acquiring a signal to be detected of the device comprises:
correcting the signal to be detected; the method specifically comprises the following steps:
acquiring a transmission waveform of the signal to be detected;
comparing the transmission waveform of the signal to be detected with preset threshold information, and taking the wave band of which the transmission waveform of the signal to be detected is larger than the preset threshold information as an instantaneous peak value of the signal to be detected;
acquiring time information corresponding to the instantaneous peak value of the signal to be detected;
acquiring correction information corresponding to the instantaneous peak value according to the instantaneous peak value of the signal to be detected;
acquiring a frequency band region for processing the signal to be detected according to the time information by adopting a preset amplitude limiting filtering algorithm, and carrying out amplitude limiting processing operation on the signal to be detected in the frequency band region according to the correction information;
the clipping filtering algorithm comprises the following steps:
acquiring two sampling signals separated by a preset time interval, and acquiring allowed maximum difference value information according to the two sampling signals;
acquiring two latest sampling signals in an amplitude limiting filtering storage unit, and comparing the two sampling signals to acquire difference comparison information; selecting a filtering calculation rule according to the difference comparison information to obtain a filtering result;
obtaining the change rule of the sampling signal according to the filtering result for a plurality of times; updating the maximum difference value information allowed by the sampling signal according to the change rule;
before the signal to be detected is corrected, the method further comprises the following steps:
judging whether the length of the signal to be detected is greater than the length of a preset signal or not, and when the length of the signal to be detected is less than the length of the preset signal, correcting the signal to be detected;
when the length of the signal to be detected is greater than the preset signal length, performing median filtering on the signal to be detected according to a preset window function of the median filtering, and filtering a baseline drift signal in the signal to be detected; and adjusting the window function of median filtering according to the frequency and relative amplitude of the signal to be detected after median filtering until the energy of the signal to be detected after median filtering in a preset frequency band reaches the maximum value after wavelet processing.
5. A new energy station power characteristic detection system, characterized in that, the system includes: the detection end and the server end; wherein,
the detection end is used for being carried by staff of the new energy station; the detection end comprises an identification module, a parameter adjusting module and a test module; wherein,
the identification module is used for identifying the test type of the current operation and transmitting the test type to the parameter adjusting module; the parameter adjusting module is used for acquiring parameter information corresponding to the test type according to the test type and transmitting the parameter information to the test module; the test module comprises a power detector; the test module is used for setting parameters of the power detector according to the parameter information; the power detector is used for detecting the power of one or more devices of the new energy station and transmitting the detection result to the test module; the test module is further used for transmitting the detection result to the server side;
the server end is used for receiving the detection result transmitted by the detection end and outputting and displaying the detection result;
the system, still include: acquiring a signal to be detected of the device;
wherein acquiring a signal to be detected of the device comprises:
correcting the signal to be detected; the method specifically comprises the following steps:
acquiring a transmission waveform of the signal to be detected;
comparing the transmission waveform of the signal to be detected with preset threshold information, and taking the wave band of which the transmission waveform of the signal to be detected is larger than the preset threshold information as an instantaneous peak value of the signal to be detected;
acquiring time information corresponding to the instantaneous peak value of the signal to be detected;
acquiring correction information corresponding to the instantaneous peak value according to the instantaneous peak value of the signal to be detected;
acquiring a frequency band region for processing the signal to be detected according to the time information by adopting a preset amplitude limiting filtering algorithm, and carrying out amplitude limiting processing operation on the signal to be detected in the frequency band region according to the correction information;
the clipping filtering algorithm comprises the following steps:
acquiring two sampling signals separated by a preset time interval, and acquiring allowed maximum difference value information according to the two sampling signals;
acquiring two latest sampling signals in an amplitude limiting filtering storage unit, and comparing the two sampling signals to acquire difference comparison information; selecting a filtering calculation rule according to the difference comparison information to obtain a filtering result;
obtaining the change rule of the sampling signal according to the filtering result for a plurality of times; updating the maximum difference value information allowed by the sampling signal according to the change rule;
before the signal to be detected is corrected, the method further comprises the following steps:
judging whether the length of the signal to be detected is greater than the length of a preset signal or not, and when the length of the signal to be detected is less than the length of the preset signal, correcting the signal to be detected;
when the length of the signal to be detected is greater than the preset signal length, performing median filtering on the signal to be detected according to a preset window function of the median filtering, and filtering a baseline drift signal in the signal to be detected; and adjusting the window function of median filtering according to the frequency and relative amplitude of the signal to be detected after median filtering until the energy of the signal to be detected after median filtering in a preset frequency band reaches the maximum value after wavelet processing.
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