CN112083249A - Intelligent detection device meeting steady-state and transient-state tests and detection method thereof - Google Patents
Intelligent detection device meeting steady-state and transient-state tests and detection method thereof Download PDFInfo
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- CN112083249A CN112083249A CN202010978105.XA CN202010978105A CN112083249A CN 112083249 A CN112083249 A CN 112083249A CN 202010978105 A CN202010978105 A CN 202010978105A CN 112083249 A CN112083249 A CN 112083249A
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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
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R13/00—Arrangements for displaying electric variables or waveforms
- G01R13/02—Arrangements for displaying electric variables or waveforms for displaying measured electric variables in digital form
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R13/00—Arrangements for displaying electric variables or waveforms
- G01R13/02—Arrangements for displaying electric variables or waveforms for displaying measured electric variables in digital form
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/0046—Arrangements for measuring currents or voltages or for indicating presence or sign thereof characterised by a specific application or detail not covered by any other subgroup of G01R19/00
- G01R19/0053—Noise discrimination; Analog sampling; Measuring transients
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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
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/54—Testing for continuity
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Abstract
The invention discloses an intelligent detection device and a detection method thereof meeting steady-state and transient-state tests, and the intelligent detection method meeting the steady-state and transient-state tests comprises the following steps of S1: the computer controls and processes the signal generated by the steady-state signal generating circuit to form a first signal, and the first signal is input to a transmitter to be detected; step S2: the transmitting device inputs the direct current quantity of the direct current quantity channel in the first range into the multi-channel switching circuit, and the multi-channel switching circuit enables the corresponding direct current quantity channel to be connected into the direct current signal detection circuit so as to detect direct current and direct current voltage. The invention discloses an intelligent detection device and a detection method thereof meeting steady-state and transient-state tests, which meet the requirements of steady-state and transient-state detection at the same time, and can detect 24 maximum analog quantity output channels through a multi-channel switching circuit; meanwhile, the transient signal generating circuit can meet the detection of PT disconnection warning and switching functions and CT disconnection warning and switching function items.
Description
Technical Field
The invention belongs to the technical field of satisfying steady-state and transient-state detection, and particularly relates to an intelligent detection device and an intelligent detection method for satisfying steady-state and transient-state tests.
Background
At present, the traditional alternating current sampling and transmitter inspection device can only detect the analog quantity output precision, the response time, the ripple content and the like of a transmitter, meanwhile, the number of related analog quantity channels is small (generally 1-3 channels), and after 1 channel of analog quantity channel is detected, the analog quantity channel needs to be switched to the next analog quantity channel through manual wiring. In recent years, the intelligent transmitter is popularized and applied in a large range, compared with the traditional analog transmitter, the intelligent transmitter has complex functions, a plurality of analog quantity channels and more complicated tests, and relates to power frequency alternating current, if the test is carried out by only depending on manual work, the test has a plurality of items, large workload and very high technical requirements on testers. The PT disconnection warning and switching function, the CT disconnection warning and switching function and the transient performance verification of the intelligent transmitting device cannot be realized on the traditional alternating current sampling and transmitter inspection device, and meanwhile, a conventional transmitter report only contains test result data, corresponding test process data are not generated in a matched mode, and the analysis of complex test items is difficult.
Therefore, the above problems are further improved. A
Disclosure of Invention
The invention mainly aims to provide an intelligent detection device and a detection method thereof meeting steady-state and transient-state tests, which simultaneously meet steady-state and transient-state detection and can detect 24 maximum analog quantity output channels through a multi-channel switching circuit; meanwhile, the transient signal generating circuit can meet the detection of PT disconnection warning and switching function and CT disconnection warning and switching function items, and a test report comprises a conventional data report and an image report; and test recording waveform data can be derived, and analysis processing is performed from the bottommost layer, so that the whole detection test process can be more clearly understood.
The invention also aims to provide an intelligent detection device and a detection method thereof meeting the requirements of steady-state and transient-state tests, and a multi-channel switching technology is adopted, wherein a transmitting device to be detected is connected with a multi-channel switching circuit through a terminal flat cable, and a direct current channel to be detected is controlled by software, so that the channel is switched without manual wire replacement, the workload of manual wiring is reduced, and the test efficiency is improved; the synchronous AC/DC sampling and wave recording is carried out, the semaphore in the test process is stored as a wave recording format file, special wave recording analysis software is adopted, analysis processing is carried out from the bottommost layer, and the whole test process is more clearly known.
In order to achieve the above object, the present invention provides an intelligent detection method satisfying steady-state and transient-state tests, comprising the following steps:
step S1: the computer controls and processes the signal generated by the steady-state signal generating circuit to form a first signal, and the first signal is input to a transmitter to be detected;
step S2: the transmitting device inputs the direct current quantity of the direct current quantity channel in the first range into the multi-channel switching circuit, and the multi-channel switching circuit accesses the corresponding direct current quantity channel into the direct current signal detection circuit so as to detect direct current and direct voltage;
step S3: the computer respectively reads a standard signal (comprising standard voltage and standard current) generated by the steady-state signal generating circuit and an actual detection signal obtained by the detection of the direct-current signal detecting circuit, analyzes the standard signal and the actual detection signal according to data comparison, and calculates an error or qualitatively inquires a detection result to finish steady-state testing;
step S4: the computer controls and processes the signal generated by the transient signal generating circuit through the router to form a second signal, and the second signal is respectively input into the transmitting device to be detected and the wave recording circuit;
step S5: the transmitting device inputs the direct current quantity of the direct current quantity channel in the first range into the multi-channel switching circuit, and the multi-channel switching circuit accesses the corresponding direct current quantity channel into the wave recording circuit;
step S6: the computer controls the wave recording circuit through the router and reads the voltage, the current and the direct current channel waveform recorded by the wave recording circuit.
As a further preferable embodiment of the above technical means, step S1 is specifically implemented as the following steps:
step S1.1: the computer controls the steady-state signal generating circuit to generate three-phase voltage and controls the lifting of the three-phase voltage;
step S1.2: the computer controls the steady-state signal generating circuit to generate three-phase current and controls the lifting of the three-phase current.
As a further preferable embodiment of the above technical means, step S4 is specifically implemented as the following steps:
step S4.. 1: the computer controls the transient signal generating circuit to generate three-phase voltage and controls the rising and falling of the three-phase voltage;
step S4.. 2: the computer controls the transient signal generating circuit to generate three-phase current and controls the lifting of the three-phase current.
As a further preferable embodiment of the above technical means, step S2 is specifically implemented as the following steps:
step S2.1: the transmitting device outputs the direct current quantities of all the direct current channels to the multi-channel switching circuit;
step S2.2: the multi-channel switching circuit outputs the DC channel of the DC channel to be detected to the DC signal detection circuit after being selected.
As a further preferable embodiment of the above technical means, step S5 is specifically implemented as the following steps:
step S5.1: the transmitting device outputs the direct current quantities of all the direct current channels to the multi-channel switching circuit;
step S5.2: the multichannel switching circuit outputs the direct current quantity of the direct current channel needing to be detected after selection to the wave recording circuit.
As a further preferable embodiment of the above technical means, step S6 is specifically implemented as the following steps:
step S6.1: the computer reads the recording signals recorded by the recording circuit through the router, and the recording signals comprise voltage, current and direct-current channel waveforms;
step S6.2: the computer controls the starting and stopping of the wave recording circuit through the router, saves the wave recording signals as wave recording format files, and analyzes and processes the wave recording format files to complete transient test.
The invention also provides an intelligent detection device meeting the requirements of steady-state and transient-state tests, which comprises a computer, a steady-state signal generating circuit, a transmitting device, a multi-channel switching circuit, a direct-current signal detection circuit, a router, a transient-state signal generating circuit and a wave recording circuit, wherein:
the computer controls and processes the signal generated by the steady-state signal generating circuit to form a first signal, and the first signal is input to a transmitter to be detected;
the transmitting device inputs the direct current quantity of the direct current quantity channel in the first range into the multi-channel switching circuit, and the multi-channel switching circuit accesses the corresponding direct current quantity channel into the direct current signal detection circuit so as to detect direct current and direct voltage;
the computer respectively reads a standard signal (comprising standard voltage and standard current) generated by the steady-state signal generating circuit and an actual detection signal obtained by the detection of the direct-current signal detecting circuit, analyzes the standard signal and the actual detection signal according to data comparison, and calculates an error or qualitatively inquires a detection result to finish steady-state testing;
the computer controls and processes the signal generated by the transient signal generating circuit through the router to form a second signal, and the second signal is respectively input into the transmitting device to be detected and the wave recording circuit;
the transmitting device inputs the direct current quantity of the direct current quantity channel in the first range into the multi-channel switching circuit, and the multi-channel switching circuit accesses the corresponding direct current quantity channel into the wave recording circuit;
the computer controls the wave recording circuit through the router and reads the voltage, the current and the direct current channel waveform recorded by the wave recording circuit.
As a further preferable embodiment of the above-described embodiment, the first signal includes a three-phase voltage and a three-phase current.
As a further preferable technical solution of the above technical solution, the computer reads the recording signal recorded by the recording circuit through the router, the recording signal including voltage, current and dc channel waveform;
the computer controls the starting and stopping of the wave recording circuit through the router, saves the wave recording signals as wave recording format files, and analyzes and processes the wave recording format files to complete transient test.
Drawings
Fig. 1 is a connection diagram of the intelligent detection device and the method thereof satisfying steady-state and transient tests according to the present invention.
Detailed Description
The following description is presented to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art. The basic principles of the invention, as defined in the following description, may be applied to other embodiments, variations, modifications, equivalents, and other technical solutions without departing from the spirit and scope of the invention.
Referring to fig. 1 of the drawings, fig. 1 is a connection relationship diagram of an intelligent detection device satisfying steady-state and transient tests and a method thereof.
In the preferred embodiment of the present invention, those skilled in the art should note that the computers, voltages, currents, etc. referred to in the present invention can be regarded as the prior art.
Preferred embodiments.
The invention discloses an intelligent detection method meeting steady-state and transient-state tests, which comprises the following steps:
step S1: the computer controls and processes the signal generated by the steady-state signal generating circuit to form a first signal, and the first signal is input to a transmitter to be detected;
step S2: the transmitting device inputs the direct current quantity of the direct current quantity channel in the first range into the multi-channel switching circuit, and the multi-channel switching circuit accesses the corresponding direct current quantity channel into the direct current signal detection circuit so as to detect direct current and direct voltage;
step S3: the computer respectively reads a standard signal (comprising standard voltage and standard current) generated by the steady-state signal generating circuit and an actual detection signal obtained by the detection of the direct-current signal detecting circuit, analyzes the standard signal and the actual detection signal according to data comparison, and calculates an error or qualitatively inquires a detection result to finish steady-state testing;
step S4: the computer controls and processes the signal generated by the transient signal generating circuit through the router to form a second signal, and the second signal is respectively input into the transmitting device to be detected and the wave recording circuit;
step S5: the transmitting device inputs the direct current quantity of the direct current quantity channel in the first range into the multi-channel switching circuit, and the multi-channel switching circuit accesses the corresponding direct current quantity channel into the wave recording circuit;
step S6: the computer reads the wave recording circuit through the router and reads the voltage, the current and the direct current channel waveform recorded by the wave recording circuit.
Specifically, step S1 is implemented as the following steps:
step S1.1: the computer controls the steady-state signal generating circuit to generate three-phase voltage and controls the lifting of the three-phase voltage;
step S1.2: the computer controls the steady-state signal generating circuit to generate three-phase current and controls the lifting of the three-phase current.
More specifically, step S4 is specifically implemented as the following steps:
step S4.. 1: the computer controls the transient signal generating circuit to generate three-phase voltage and controls the rising and falling of the three-phase voltage;
step S4.. 2: the computer controls the transient signal generating circuit to generate three-phase current and controls the lifting of the three-phase current.
Further, step S2 is specifically implemented as the following steps:
step S2.1: the transmitting device outputs the direct current quantities of all the direct current channels to the multi-channel switching circuit;
step S2.2: the multi-channel switching circuit outputs the direct current quantity of the direct current channel needing to be detected after selection to the direct current signal detection circuit.
Further, step S5 is implemented as the following steps:
step S5.1: the transmitting device outputs the direct current quantities of all the direct current channels to the multi-channel switching circuit;
step S5.2: the multichannel switching circuit outputs the direct current quantity of the direct current channel needing to be detected after selection to the wave recording circuit.
Preferably, step S6 is embodied as the following steps:
step S6.1: the computer reads the recording signals recorded by the recording circuit through the router, and the recording signals comprise voltage, current and direct-current channel waveforms;
step S6.2: the computer controls the starting and stopping of the wave recording circuit through the router, saves the wave recording signals as wave recording format files, and analyzes and processes the wave recording format files to complete transient test.
The invention also discloses an intelligent detection device meeting the requirements of steady-state and transient-state tests, which is characterized by comprising a computer, a steady-state signal generating circuit, a transmitting device, a multi-channel switching circuit, a direct-current signal detecting circuit, a router, a transient-state signal generating circuit and a wave recording circuit, wherein:
the computer controls and processes the signal generated by the steady-state signal generating circuit to form a first signal, and the first signal is input to a transmitter to be detected;
the transmitting device inputs the direct current quantity of the direct current quantity channel in the first range into the multi-channel switching circuit, and the multi-channel switching circuit accesses the corresponding direct current quantity channel into the direct current signal detection circuit so as to detect direct current and direct voltage;
the computer respectively reads a standard signal (comprising standard voltage and standard current) generated by the steady-state signal generating circuit and an actual detection signal obtained by the detection of the direct-current signal detecting circuit, analyzes the standard signal and the actual detection signal according to data comparison, and calculates an error or qualitatively inquires a detection result to finish steady-state testing;
the computer controls and processes the signal generated by the transient signal generating circuit through the router to form a second signal, and the second signal is respectively input into the transmitting device to be detected and the wave recording circuit;
the transmitting device inputs the direct current quantity of the direct current quantity channel in the first range into the multi-channel switching circuit, and the multi-channel switching circuit accesses the corresponding direct current quantity channel into the wave recording circuit;
the computer controls the wave recording circuit through the router and reads the voltage, the current and the direct current channel waveform recorded by the wave recording circuit.
Specifically, the first signal includes a three-phase voltage and a three-phase current.
More specifically, the computer reads the recording signals recorded by the recording circuit through the router, and the recording signals comprise voltage, current and direct-current channel waveforms;
the computer controls the starting and stopping of the wave recording circuit through the router, saves the wave recording signals as wave recording format files, and analyzes and processes the wave recording format files to complete transient test.
Preferably, the apparatus consists of: the device mainly comprises a computer, a router, a transient signal generating circuit, a steady-state signal generating circuit, a multi-channel switching circuit, a wave recording circuit, a direct current signal detecting circuit and the like.
1. A computer: the system test software is matched to control the rise and fall of the voltage and the current of the steady-state signal circuit and the transient-state signal circuit, and can also realize the waveform playback and the simulation of the state sequence. The standard signal and the actual measurement signal can be read through the communication port, data comparison and analysis are carried out, and errors are calculated or test results are qualitatively checked.
2. The router: the transient signal generating circuit and the wave recording circuit adopt RJ45 network communication, and a computer can be connected with two or more network devices through a router to meet the requirements of data reading and signal control.
3. Transient signal generating circuit: the circuit has 6 paths of voltage and 6 paths of current channels, Un and In are completely isolated from each other, synchronous output can be realized, the response time is fast, and the synchronism of alternating voltage and alternating current is less than 10 uS;
4. a steady-state signal generating circuit: the 32-bit ARM system is used as a core, a linear power amplifier is adopted, the distortion degree is small, the stability is high, an ARM industrial control system and a TFT color liquid crystal display are adopted as a human-computer interface, the touch screen is operated, all electrical parameters can be displayed on one screen, and alternating voltage, current, power, phase, power factor, frequency transmitters and the like can be detected. Accuracy of output ac voltage: grade 0.05, stability: 0.01%/3 min; output alternating current 0.05 level, stability: 0.01%/3 min;
5. multichannel switching circuit: the switching of 24 maximal direct current channels is satisfied, and the direct current channel to be tested is selected to be sent to the wave recording circuit or the direct current signal detection loop through software control.
6. A wave recording circuit: the system is designed by adopting an advanced DSP and a 32-bit embedded CPU and combining a large-scale FPGA technology with a high-performance embedded real-time operating system, can adapt to dynamic fault recording and analysis of the development requirements of a power system, adopts the safest ubuntu system in the world at present, and can be widely applied to occasions requiring fault recording and state recording and analysis, such as lines of various voltage grades, generator-transformer sets, transformers and the like.
7. Direct current signal detection circuit: direct current voltage measurement, measurement limit: 0- ± 10V, accuracy: grade 0.05; direct current measurement, limit: 0- ± 20mA, accuracy: grade 0.05.
It should be noted that the technical features of the computer, the voltage, the current, and the like related to the present patent application should be regarded as the prior art, and the specific structure, the operation principle, the control mode and the spatial arrangement mode of the technical features may be selected conventionally in the field, and should not be regarded as the invention point of the present patent, and the present patent is not further specifically described in detail.
It will be apparent to those skilled in the art that modifications and equivalents may be made in the embodiments and/or portions thereof without departing from the spirit and scope of the present invention.
Claims (9)
1. An intelligent detection method meeting steady-state and transient tests is characterized by comprising the following steps:
step S1: the computer controls and processes the signal generated by the steady-state signal generating circuit to form a first signal, and the first signal is input to a transmitter to be detected;
step S2: the transmitting device inputs the direct current quantity of the direct current quantity channel in the first range into the multi-channel switching circuit, and the multi-channel switching circuit accesses the corresponding direct current quantity channel into the direct current signal detection circuit so as to detect direct current and direct voltage;
step S3: the computer respectively reads a standard signal generated by the steady-state signal generating circuit and an actual detection signal obtained by detection of the direct-current signal detecting circuit, analyzes the standard signal and the actual detection signal according to data comparison, and calculates an error or qualitatively inquires a detection result to finish steady-state testing;
step S4: the computer controls and processes the signal generated by the transient signal generating circuit through the router to form a second signal, and the second signal is respectively input into the transmitting device to be detected and the wave recording circuit;
step S5: the transmitting device inputs the direct current quantity of the direct current quantity channel in the first range into the multi-channel switching circuit, and the multi-channel switching circuit accesses the corresponding direct current quantity channel into the wave recording circuit;
step S6: the computer controls the wave recording circuit through the router and reads the voltage, the current and the direct current channel waveform recorded by the wave recording circuit.
2. The intelligent detection method satisfying the steady-state and transient-state tests as claimed in claim 1, wherein the step S1 is implemented as the following steps:
step S1.1: the computer controls the steady-state signal generating circuit to generate three-phase voltage and controls the lifting of the three-phase voltage;
step S1.2: the computer controls the steady-state signal generating circuit to generate three-phase current and controls the lifting of the three-phase current.
3. The intelligent detection method satisfying the steady-state and transient-state tests as claimed in claim 1, wherein the step S4 is implemented as the following steps:
step S4.. 1: the computer controls the transient signal generating circuit to generate three-phase voltage and controls the rising and falling of the three-phase voltage;
step S4.. 2: the computer controls the transient signal generating circuit to generate three-phase current and controls the lifting of the three-phase current.
4. The intelligent detection method satisfying the steady-state and transient-state tests as claimed in claim 2, wherein the step S2 is implemented as the following steps:
step S2.1: the transmitting device outputs the direct current quantities of all the direct current channels to the multi-channel switching circuit;
step S2.2: the multi-channel switching circuit outputs the DC channel of the DC channel to be detected to the DC signal detection circuit after being selected.
5. The intelligent detection method satisfying the steady-state and transient-state tests as claimed in claim 3, wherein the step S5 is implemented as the following steps:
step S5.1: the transmitting device outputs the direct current quantities of all the direct current channels to the multi-channel switching circuit;
step S5.2: the multichannel switching circuit outputs the direct current quantity of the direct current channel needing to be detected after selection to the wave recording circuit.
6. The intelligent detection method satisfying the steady-state and transient-state tests as claimed in claim 5, wherein the step S6 is implemented by the steps of:
step S6.1: the computer reads the recording signals recorded by the recording circuit through the router, and the recording signals comprise voltage, current and direct-current channel waveforms;
step S6.2: the computer controls the starting and stopping of the wave recording circuit through the router, saves the wave recording signals as wave recording format files, and analyzes and processes the wave recording format files to complete transient test.
7. An intelligent detection device for satisfying steady-state and transient-state tests, for implementing an intelligent detection method for satisfying steady-state and transient-state tests as claimed in claim 1, comprising a computer, a steady-state signal generation circuit, a transmission device, a multi-channel switching circuit, a dc signal detection circuit, a router, a transient-state signal generation circuit and a wave recording circuit, wherein:
the computer controls and processes the signal generated by the steady-state signal generating circuit to form a first signal, and the first signal is input to a transmitter to be detected;
the transmitting device inputs the direct current quantity of the direct current quantity channel in the first range into the multi-channel switching circuit, and the multi-channel switching circuit accesses the corresponding direct current quantity channel into the direct current signal detection circuit so as to detect direct current and direct voltage;
the computer respectively reads a standard signal generated by the steady-state signal generating circuit and an actual detection signal obtained by detection of the direct-current signal detecting circuit, analyzes the standard signal and the actual detection signal according to data comparison, and calculates an error or qualitatively inquires a detection result to finish steady-state testing;
the computer controls and processes the signal generated by the transient signal generating circuit through the router to form a second signal, and the second signal is respectively input into the transmitting device to be detected and the wave recording circuit;
the transmitting device inputs the direct current quantity of the direct current quantity channel in the first range into the multi-channel switching circuit, and the multi-channel switching circuit accesses the corresponding direct current quantity channel into the wave recording circuit;
the computer controls the wave recording circuit through the router and reads the voltage, the current and the direct current channel waveform recorded by the wave recording circuit.
8. The intelligent detection device for meeting steady-state and transient-state tests of claim 7, wherein the first signal comprises three-phase voltage and three-phase current.
9. The intelligent detection device for meeting the steady-state and transient-state tests as claimed in claim 8, wherein the computer reads the recording signals recorded by the recording circuit through the router, wherein the recording signals comprise voltage, current and direct-current channel waveforms;
the computer controls the starting and stopping of the wave recording circuit through the router, saves the wave recording signals as wave recording format files, and analyzes and processes the wave recording format files to complete transient test.
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