CN111999690A - Batch factory detection system and method for adaptive PMU device - Google Patents
Batch factory detection system and method for adaptive PMU device Download PDFInfo
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Abstract
The invention discloses a batch delivery detection system and method for self-adaptive PMU devices, which belong to the field of PMU device testing. The detection system provides various test signals required by factory detection of different models of the PMU device, realizes quick construction of a detection environment when in use, realizes automatic construction of a PMU device test case and automatic completion of a test process, greatly improves the efficiency of factory detection of the PMU device, simultaneously ensures the factory quality of the PMU device, and indirectly maintains the safe and reliable operation of a power grid.
Description
Technical Field
The invention belongs to the field of PMU device testing, and particularly relates to a batch factory detection system and method for self-adaptive PMU devices.
Background
A pmu (phasor Measurement unit), that is, a synchronous phasor Measurement apparatus, is a phasor Measurement unit formed by using a Global Positioning System (GPS) second pulse as a synchronous clock, and can be used in the fields of dynamic monitoring, System protection, System analysis and prediction of an electric power System, and is an important device for ensuring safe operation of a power grid. With the rapid development and construction of a power grid, the PMU device is more and more widely applied to electric power, and the market demand is more and more large. As a research and development manufacturer of PMU devices, the following problems are faced in the factory inspection of PMU devices at present:
1) according to different application environments, the PMU device is different In configuration of sampling plug-ins, analog quantity voltage (rated voltage Un is 57.74V), analog quantity current (rated current In is 1A or 5A), input quantity, output quantity, direct current voltage small signals (0-10V) and direct current small signals (4-20 mA) are involved, the types and the channel number are more, a clock system, a power signal source, a small signal generator, a switching value simulation device and other devices need to be configured aiming at the PMU test at present, the number of limited output channels needs to be detected In a multi-round rotation mode to complete the detection of the used channels during the test, and no set of sampling signal system or device capable of solving the problem of the PMU device at one time exists;
2) the method is limited by the influence of a plurality of sampling channels and types of PMU devices, and the prior PMU device delivery test basically adopts a manual dosage mode to carry out the relevant delivery test of the PMU device, so that the efficiency is low, the test quality is not controllable, and a system and a method for realizing batch delivery test of the PMU device are lacked.
3) The PMU device sampling channel interface is usually the phoenix terminal, and when dispatching from the factory and examining, the test preparation operating time such as wiring, the disconnect of every PMU device accounts for half of whole detection operating time, greatly influences PMU device detection efficiency that dispatches from the factory.
Disclosure of Invention
Aiming at the defects or improvement requirements of the prior art, the invention provides a batch factory detection system and method for self-adaptive PMU devices, which solve the problems that a plurality of types of instruments and equipment are needed during factory detection of the PMU devices, the maintenance efficiency is low, and the factory detection quality is uncontrollable, so that efficient, convenient and reliable factory detection of the PMU devices is realized.
To achieve the above object, according to an aspect of the present invention, there is provided an adaptive PMU device batch factory testing system, including: a comprehensive signal output device and a voltage-current power amplifier;
synthesize signal output device and adopt plug-in components formula structure, include: an AC analog voltage small signal plug-in, a DC analog current small signal plug-in, an input quantity plug-in, an output quantity plug-in, an Ethernet plug-in, a power plug-in, a CPU plug-in and a control communication interface, the alternating current analog quantity voltage small signal plug-in is used for outputting alternating current analog quantity voltage small signals, the direct current analog quantity voltage small signal plug-in is used for outputting direct current analog quantity voltage small signals, the direct current analog quantity current small signal plug-in is used for outputting a direct current analog quantity current small signal, the input quantity plug-in is used for detecting the input quantity, the output plug-in is used for simulating the output state, the Ethernet plug-in is used for being connected with a background communication interface of the PMU device, the power supply plug-in is used for providing power for each plug-in, the CPU plug-in is used for controlling each plug-in to carry out signal input and output, and the control communication interface realizes information interaction with the PMU device;
the voltage and current power amplifier is used for outputting an alternating current voltage large signal and an alternating current large signal according to the alternating current analog quantity voltage small signal.
Preferably, the output amplitude of the alternating current analog quantity voltage small signal is 0-10V, the output amplitude of the alternating current voltage large signal is 0-130V, the output amplitude of the alternating current large signal is 0-40A, the output amplitude of the direct current analog quantity voltage small signal is 0-10V, and the output amplitude of the direct current analog quantity current small signal is 0-20 mA.
Preferably, the integrated signal output device can output synchronous analog signals of a plurality of PMU devices under the assistance of an external B code time synchronization signal, and the requirement of a plurality of sampling channels of the PMU devices is met.
According to another aspect of the present invention, there is provided a testing method for an adaptive PMU device batch factory testing system, including:
after the detection system is connected with the PMU device, the detection system outputs an analog quantity voltage signal, an analog quantity current signal and an output quantity position signal to the PMU device, and an Ethernet interface plug-in is used for connecting a communication background interface of the PMU device, wherein the analog quantity voltage signal comprises an alternating current analog quantity large voltage signal and a direct current analog quantity small voltage signal, and the analog quantity current signal comprises an alternating current analog quantity large current signal and a direct current analog quantity small current signal;
obtaining an analog quantity voltage signal, an analog quantity current signal and a drive-out position which are actually acquired by the PMU device through a data transmission protocol of a real-time dynamic monitoring system of the power system, and judging the correctness of the functions of analog quantity and switching quantity acquisition plug-ins when the PMU device leaves factory and detects in batch according to the analog quantity voltage signal, the analog quantity current signal and the drive-out position which are output by the detection system;
the detection system carries out remote control on the outlet of the PMU device through the background communication interface, meanwhile, the outlet position of the PMU device is monitored in real time by the switching value plug-in unit of the detection system, and the remote control on-off operation is compared with the actual outlet position of the PMU device, so that the correctness of the function of the switching value outlet plug-in unit when the PMU device is subjected to factory batch detection is judged.
Preferably, the method further comprises:
the system comprises an alternating current voltage acquisition interface of a PMU device, an alternating current analog quantity large-voltage output interface of a detection system, an alternating current acquisition interface of the PMU device, a direct current analog quantity large-current output interface of the detection system, a direct current voltage acquisition interface of the PMU device, a direct current analog quantity small-voltage output interface of the detection system, a direct current acquisition interface of the PMU device, a switching-in quantity interface of the PMU device, a switching-out quantity plug-in unit of the detection system and a switching-in quantity plug-in unit of the detection system.
Preferably, the detection system is connected to the PMU device through an automatic docking mechanism that includes: a fixed component, a moving component and an elastic butt joint component;
the fixing part is used for realizing the fixed placement of the PMU device and the locking fixation after the butt joint is finished;
the elastic butt joint component consists of a butt joint elastic thimble, a movable base and an external standard banana plug interface, the butt joint elastic thimble realizes reliable physical connection of different sampling interfaces of the PMU device and the interface of the detection system through spring elasticity in the butt joint process, the movable base ensures reliable butt joint of PMU devices of different models and batches through adjustment of an X axis and a Y axis, and the external standard banana plug can realize quick replacement of signals of sampling ports of different PMU devices;
the moving part is used for realizing the movement of the PMU device, and the butt joint between the sampling port of the PMU device and the butt joint elastic thimble is pushed through the movement of the slide rail and the roller.
Preferably, after the detection system is connected to the PMU device, the method further includes:
the method comprises the following steps of correlating a data channel output by a detection system with a sampling channel number of a PMU device and an uploading background channel to realize automatic construction of factory test cases of PMU devices of different batches, wherein for analog quantity sampling channels of the PMU device, the total number of the sampling channels is divided according to branches, the number of the branches of the sampling channels is set to be m, each branch covers A, B, C three-phase voltage and current and comprises 6 channels in total, the channel number is 6m-5, 6m-4, 6m-3, 6m-2, 6m-1 and 6m in sequence, 3-phase voltage and 3-phase current of a power amplifier are a set of output data, and the output channel number is defined as: the voltage/current type + phase type A/B/C + group number m, different groups of the PMU analog sampling branch and the power amplifier automatically map different groups of the PMU analog sampling branch and different plug-ins of the integrated signal output device according to the sequence of the voltage current type and the sequence of the plug-ins corresponding to the groups; for switching value position channels in a PMU device, the total number of the channels is divided according to groups, the number of the switching value channel groups is set to be n, each group covers 8 channels, the channel numbers are sequentially 8n-7, 8n-6, 8n-5, 8n-4, 8n-3, 8n-2, 8n-1 and 8n, each switching value plug-in unit of the comprehensive signal output device is provided with 8 pairs of switching value channels, and the output channel number is defined as: and the plug-in number + the channel number 1/2/3/4/5/6/7/8, and the switching value of the PMU are automatically mapped between each group of channels and different plug-ins of the integrated signal output device according to the sequence of the plug-ins corresponding to the groups.
Preferably, the method for judging the correctness of the function of the analog quantity acquisition plug-in unit when the PMU device leaves the factory for batch detection according to the analog quantity voltage signal and the analog quantity current signal output by the detection system comprises the following steps:
for the analog quantity sampling function, the number of analog quantity channels is M, a 2M +2 state sequence is constructed, and the first 2 state sequences carry out simultaneous addition testing on all the channels to find sampling channel hardware faults and sampling precision faults, wherein M is 6M;
and (3) adding the quantity of all the channels by a channel polling test method, judging whether the analog quantity sampling channel has a mapping error or an internal short-circuit fault, and positioning the fault through fault summarization.
Preferably, the correctness of the function of the switching value acquisition plug-in unit when the PMU device is delivered to the factory for batch detection is judged according to the output position output by the detection system, and includes:
for the switching value position acquisition and outlet position discrimination functions, the number of switching value channels is N, a 2N +2 state sequence is constructed, and the first 2 state sequences carry out simultaneous displacement test on all the channels to find the abnormal position of the hardware fault of the switching value channel, wherein N is 8N;
and (3) shifting all channels by a channel polling test method, judging whether the switching value channels have mapping errors or internal short-circuit faults, and positioning the faults by fault summarization.
According to another aspect of the invention, a computer-readable storage medium is provided, on which a computer program is stored which, when being executed by a processor, carries out the steps of the method of any of the above.
In general, compared with the prior art, the above technical solution contemplated by the present invention can achieve the following beneficial effects:
the hardware structure of the PMU self-adaptive PMU device delivery detection system provides various test signals required by delivery detection of different models of PMU devices, and the PMU self-adaptive PMU device delivery detection system is matched with an automatic docking mechanism to realize quick construction of a detection environment when in use, realize automatic construction of a PMU device test case and automatic completion of a test process, greatly improve the efficiency of delivery detection of the PMU device, simultaneously ensure the delivery quality of the PMU device and indirectly maintain the safe and reliable operation of a power grid.
Drawings
Fig. 1 is a hardware structure diagram of a batch factory testing system for adaptive PMU devices according to an embodiment of the present invention;
fig. 2 is a schematic flowchart of a batch factory detection method for adaptive PMU devices according to an embodiment of the present invention;
fig. 3 is a schematic diagram of a test wiring of a batch-factory detection system of an adaptive PMU device according to an embodiment of the present invention;
fig. 4 is a schematic diagram of automatic construction of a use case of a batch-scale delivery detection method for adaptive PMU devices according to an embodiment of the present invention;
fig. 5 is a flowchart of a closed-loop implementation method for batch factory testing of adaptive PMU devices according to an embodiment of the present invention;
fig. 6 is a schematic diagram of a flexible automatic wiring structure of a PMU device according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
Example one
Fig. 1 is a hardware structure diagram of a batch factory testing system for adaptive PMU devices according to an embodiment of the present invention, including: a comprehensive signal output device and a power amplifier module;
the comprehensive signal output device adopts a plug-in structure and can support various plug-in board cards such as alternating current analog quantity voltage small signals, direct current analog quantity current small signals, input quantity and output quantity, the output amplitude of the alternating current analog quantity voltage small signals is 0-10V, the alternating current analog quantity voltage small signals are matched with the voltage and current power amplifier module to output alternating current voltage large signals of 0-130V and alternating current large signals of 0-40A, and the detection system covers various types of plug-ins required by the PMU device. Meanwhile, the integrated signal output device can realize synchronous analog quantity signal output of a plurality of PMU devices under the assistance of an external B code time synchronization signal, and the requirements of a plurality of PMU device multi-path sampling channels are met.
As a preferred embodiment, the backplane of the integrated signal output device adopts a PCIE bus, and can adaptively support 8 service cards except for a CPU card and a communication card, and the types of the cards may be various types of card cards such as an ac analog voltage small signal card, a dc analog current small signal card, an input card, an output card, and the like. The alternating current analog quantity voltage small signal plug-in outputs 12 paths of alternating voltage with the amplitude of 0-10V, and outputs 6 paths of alternating voltage large signals with the amplitude of 0-130V and 6 paths of alternating current large signals with the amplitude of 0-40A in cooperation with a voltage and current power amplifier; the direct current analog quantity voltage small signal plug-in unit outputs 12 paths of direct current voltage of 0-10V, the direct current analog quantity current small signal plug-in unit outputs 12 paths of direct current of 0-20 mA, the input quantity plug-in unit is provided with 8 pairs of power supply self-adaptive input quantity idle connection points, and the output quantity plug-in unit is provided with 8 pairs of output quantity idle connection points. The CPU plug-in controls different plug-ins to carry out signal input and output, and the communication plug-in realizes information interaction with the PMU device.
Furthermore, the sampling input of the PMU device is connected with the output interface of the detection system, the output channel of the PMU device is connected with the input interface of the detection system, the output signal type of the detection system is adjusted according to the sampling channel types of different PMU devices, the computer equipment controls the CPU plug-in through the control communication interface, controls the input and output interfaces of the detection system through the CPU plug-in, and obtains the sampling information of the PMU device by using the background master station, thereby realizing the self-adaptive batch factory detection of the PMU device.
Example two
Fig. 2 is a schematic flow chart of a batch factory detection method for adaptive PMU devices according to an embodiment of the present invention, including:
s1: connecting a detection system with a PMU device, outputting an analog quantity voltage signal, an analog quantity current signal and an output quantity position signal to the PMU device by the detection system, and connecting a communication background interface of the PMU device by using an Ethernet interface plug-in;
s2: obtaining analog quantity values and switching value positions actually acquired by a PMU device through a real-time dynamic monitoring system data transmission protocol of a power system, and comparing and judging the correctness of the functions of analog quantity acquisition plug-in units and switching value acquisition plug-in units when the PMU device leaves a factory for batch detection by closed loop;
s3: the detection system carries out remote control on the outlet of the PMU device through the background communication interface, meanwhile, the outlet position of the PMU device is monitored in real time by the switching value plug-in unit of the detection system, and the remote control on-off operation is compared with the actual outlet position of the PMU device, so that the correctness of the function of the switching value outlet plug-in unit when the PMU device is subjected to factory batch detection is judged.
As shown in fig. 3, the detection system is connected to the PMU device, the detection system outputs an analog voltage signal, an analog current signal, and an output position signal to the PMU device, the ethernet interactive interface plug-in is used to connect a background communication interface of the PMU device, an analog value and a switching value position actually acquired by the PMU device are obtained through a real-time dynamic monitoring system data transmission protocol of the power system, and the correctness of the analog value and the switching value acquisition plug-in function is determined by closed-loop comparison when the PMU device performs factory batch detection; the detection system carries out remote control on the PMU outlet through the background communication interface, meanwhile, the outlet position of the PMU device is monitored in real time by the PMU opening and closing plug-in unit of the detection system, and the remote control on-off operation is compared with the actual outlet position of the PMU device, so that the correctness of the function of the switching value outlet plug-in unit when the PMU device is subjected to factory batch detection is judged.
Furthermore, an active correlation method of the output data channel of the detection system, the sampling channel number of the PMU device and the uploading background channel is designed, so that automatic construction of factory test cases of PMU devices in different batches is realized, the configuration time of the test cases is reduced, and the method is suitable for rapid factory detection of PMU devices with different models and different sampling port configurations.
As shown in fig. 4, for the analog sampling channels of the PMU device, the total number of the analog sampling channels is divided by branches, the number of the sampling channel branches is set to be m, each branch covers A, B, C three-phase voltage and current to be 6 channels, the channel numbers are 6m-5, 6m-4, 6m-3, 6m-2, 6m-1 and 6m in sequence, the phase voltage and the phase current of 3 phase of the power amplifier are a set of output data, the output channel number of the power amplifier is defined as "voltage/current type + phase a/B/C + group number m", the group number m represents the mth branch in the sampling channel, and different groups of the PMU analog sampling branch and the power amplifier automatically map different plug-ins of the comprehensive signal output device according to the voltage current type sequence and the sequence of the plug-ins corresponding to the groups;
for switching value position channels in a PMU device, the switching value channels are divided according to groups, the number of the switching value channel groups is set to be n, each group covers 8 channels, the channel numbers are sequentially 8n-7, 8n-6, 8n-5, 8n-4, 8n-3, 8n-2, 8n-1 and 8n, each switching value plug-in unit of the comprehensive signal output device is provided with 8 pairs of switching value channels, the output channel number is defined as plug-in unit number + channel number 1/2/3/4/5/6/7/8, and the switching value channels of each group of PMU and different plug-in units of the comprehensive signal output device are automatically mapped according to the sequence of the plug-in units corresponding to the groups.
Further, as shown in fig. 5, the closed-loop test is completed by comparing the preset value of the sampling signal of the PMU device with the actual sampling value. For the analog quantity sampling function of the PMU device, the number of analog quantity channels is M (M is 6M), a 2M +2 state sequence is constructed, firstly, the first 2 state sequences carry out simultaneous addition test on all channels, and firstly, hardware faults and sampling precision faults of the sampling channels are found; secondly, adding the quantity to all channels by a channel polling test method, and judging whether the analog quantity sampling channel has mapping errors or internal short circuit and other faults; and finally, fault positioning is carried out through fault summarization and a corresponding factory monitoring report is generated. For the switching value position acquisition and outlet position discrimination functions, the number of switching value channels is N (N is 8N), 2N +2 state sequences are constructed, firstly, the first 2 state sequences carry out simultaneous displacement test on all channels, and firstly, the abnormal position of the hardware fault of the switching value channel is found; secondly, performing displacement test on all channels by a channel polling test method, and judging whether the switching value channels have mapping errors or faults such as internal short circuit and the like; and finally, fault positioning is carried out through fault summarization and a corresponding factory monitoring report is generated.
In the embodiment of the invention, the state sequence can be divided into two parts, namely a state and a sequence, wherein the state is a stable state for analog quantity stable analog transmission, and a plurality of states can form a sequence to realize dynamic change of the amplitude and the phase of the analog quantity. The state sequence includes the amplitude, phase, frequency, duration of state output, mode of state switching, etc. of the analog quantity.
Further, as shown in fig. 6, the PMU device and the detection system may be connected by an automatic docking structure, and the docking structure may be connected to and disconnected from the PMU device by an elastic thimble. The interface of the butt joint structure connects the voltage, the current and the switching value signals of the detection system to the thimble of the butt joint structure through the circuit, and the thimble corresponds to the sampling interface of the PMU device one by one, and the physical wiring operation is realized after the butt joint is finished.
The automatic butt joint mechanism comprises a fixed part, a movable part, an elastic butt joint part and the like, wherein the fixed part mainly realizes the placement and fixation of the PMU device and the locking and fixation after the butt joint is finished; the moving part mainly realizes the movement of the PMU device, and pushes the butt joint between the sampling port of the PMU device and the probe through the movement of the slide rail and the roller; the elastic butt joint component is composed of an elastic probe, a movable base and an external standard banana plug interface, the elastic probe realizes reliable physical connection of different sampling interfaces and the detection device interface through spring elasticity in the butt joint process, the elastic probe is fixed on a board card structural member, the board card structural member is fastened on the movable base formed by an X shaft and a Y shaft through a fixing support, the movable base moves the position of the elastic probe in the directions of the X shaft and the Y shaft through the position adjustment of a fixing bolt of the X shaft and the Y shaft, the reliable butt joint of different types and batches of PMU devices is ensured, the elastic probe is welded on the banana plug through a cable, and the quick replacement of sampling port signals of different PMU devices can be realized. The PMU device is fixedly placed by the tray mechanism, and when the butt joint is completed, the locking mechanism automatically locks the PMU device, so that the butt joint is ensured to be reliable.
EXAMPLE III
The present application also provides a computer-readable storage medium, such as a flash memory, a hard disk, a multimedia card, a card-type memory (e.g., SD or DX memory, etc.), a Random Access Memory (RAM), a Static Random Access Memory (SRAM), a read-only memory (ROM), an electrically erasable programmable read-only memory (EEPROM), a programmable read-only memory (PROM), a magnetic memory, a magnetic disk, an optical disk, a server, an App application mall, etc., on which a computer program is stored, which when executed by a processor implements the adaptive PMU device batch factory testing method in the method embodiments.
It should be noted that, according to the implementation requirement, each step/component described in the present application can be divided into more steps/components, and two or more steps/components or partial operations of the steps/components can be combined into new steps/components to achieve the purpose of the present invention.
It will be understood by those skilled in the art that the foregoing is only a preferred embodiment of the present invention, and is not intended to limit the invention, and that any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. The utility model provides a self-adaptation PMU device is delivery detection system in batches which characterized in that includes: a comprehensive signal output device and a voltage-current power amplifier;
synthesize signal output device and adopt plug-in components formula structure, include: an AC analog voltage small signal plug-in, a DC analog current small signal plug-in, an input quantity plug-in, an output quantity plug-in, an Ethernet plug-in, a power plug-in, a CPU plug-in and a control communication interface, the alternating current analog quantity voltage small signal plug-in is used for outputting alternating current analog quantity voltage small signals, the direct current analog quantity voltage small signal plug-in is used for outputting direct current analog quantity voltage small signals, the direct current analog quantity current small signal plug-in is used for outputting a direct current analog quantity current small signal, the input quantity plug-in is used for detecting the input quantity, the output quantity plug-in is used for simulating output quantity deflection, the Ethernet plug-in is used for being connected with a background communication interface of the PMU device, the power supply plug-in is used for providing power for each plug-in, the CPU plug-in is used for controlling each plug-in to carry out signal input and output, and the control communication interface realizes information interaction with the PMU device;
the voltage and current power amplifier is used for outputting an alternating current voltage large signal and an alternating current large signal according to the alternating current analog quantity voltage small signal.
2. The system of claim 1, wherein the output amplitude of the AC analog quantity voltage small signal is 0-10V, the output amplitude of the AC voltage large signal is 0-130V, the output amplitude of the AC current large signal is 0-40A, the output amplitude of the DC analog quantity voltage small signal is 0-10V, and the output amplitude of the DC analog quantity current small signal is 0-20 mA.
3. The system of claim 1 or 2, wherein the integrated signal output device can realize synchronous analog signal output of multiple PMU devices with the aid of external B code time synchronization signals, so as to meet the requirement of multiple sampling channels of the PMU devices.
4. A testing method of the adaptive PMU device batch factory testing system according to any one of claims 1 to 3, comprising:
after the detection system is connected with the PMU device, the detection system outputs an analog quantity voltage signal, an analog quantity current signal and an output quantity position signal to the PMU device, and an Ethernet interface plug-in is used for connecting a communication background interface of the PMU device, wherein the analog quantity voltage signal comprises an alternating current analog quantity large voltage signal and a direct current analog quantity small voltage signal, and the analog quantity current signal comprises an alternating current analog quantity large current signal and a direct current analog quantity small current signal;
obtaining an analog quantity voltage signal, an analog quantity current signal and a drive-out position which are actually acquired by the PMU device through a data transmission protocol of a real-time dynamic monitoring system of the power system, and judging the correctness of the functions of analog quantity and switching quantity acquisition plug-ins when the PMU device leaves factory and detects in batch according to the analog quantity voltage signal, the analog quantity current signal and the drive-out position which are output by the detection system;
the detection system carries out remote control on the outlet of the PMU device through the background communication interface, meanwhile, the outlet position of the PMU device is monitored in real time by the switching value plug-in unit of the detection system, and the remote control on-off operation is compared with the actual outlet position of the PMU device, so that the correctness of the function of the switching value outlet plug-in unit when the PMU device is subjected to factory batch detection is judged.
5. The method of claim 4, further comprising:
the system comprises an alternating current voltage acquisition interface of a PMU device, an alternating current analog quantity large-voltage output interface of a detection system, an alternating current acquisition interface of the PMU device, a direct current analog quantity large-current output interface of the detection system, a direct current voltage acquisition interface of the PMU device, a direct current analog quantity small-voltage output interface of the detection system, a direct current acquisition interface of the PMU device, a switching-in quantity interface of the PMU device, a switching-out quantity plug-in unit of the detection system and a switching-in quantity plug-in unit of the detection system.
6. The method of claim 5, wherein the detection system is connected to the PMU device through an automatic docking mechanism that includes: a fixed component, a moving component and an elastic butt joint component;
the fixing part is used for realizing the fixed placement of the PMU device and the locking fixation after the butt joint is finished;
the elastic butt joint component consists of a butt joint elastic thimble, a movable base and an external standard banana plug interface, the butt joint elastic thimble realizes reliable physical connection of different sampling interfaces of the PMU device and a detection system interface through spring elasticity in the butt joint process, the movable base ensures reliable butt joint of different PMU devices through adjustment of an X axis and a Y axis, and the external standard banana plug can realize quick replacement of signals of sampling ports of different PMU devices;
the moving part is used for realizing the movement of the PMU device, and the butt joint between the sampling port of the PMU device and the butt joint elastic thimble is pushed through the movement of the slide rail and the roller.
7. The method of any of claims 4 to 6, wherein after the connection of the detection system to the PMU device, the method further comprises:
the method comprises the following steps of associating a data channel output by a detection system with a sampling channel number of a PMU device and an uploading background channel to realize automatic construction of factory test cases of different PMU devices, wherein for analog quantity sampling channels of the PMU device, the total number of the sampling channels is divided according to branches, the number of the branches of the sampling channels is set to be m, each branch covers A, B, C three-phase voltage and current and comprises 6 channels in total, the channel number is 6m-5, 6m-4, 6m-3, 6m-2, 6m-1 and 6m in sequence, phase voltage and phase current of a power amplifier 3 are a group of output data, and the output channel number is defined as: the voltage/current type + phase type A/B/C + group number m, different groups of the PMU analog sampling branch and the power amplifier automatically map different groups of the PMU analog sampling branch and different plug-ins of the integrated signal output device according to the sequence of the voltage current type and the sequence of the plug-ins corresponding to the groups; for switching value position channels in a PMU device, the total number of the channels is divided according to groups, the number of the switching value channel groups is set to be n, each group covers 8 channels, the channel numbers are sequentially 8n-7, 8n-6, 8n-5, 8n-4, 8n-3, 8n-2, 8n-1 and 8n, each switching value plug-in unit of the comprehensive signal output device is provided with 8 pairs of switching value channels, and the output channel number is defined as: and the plug-in number + the channel number 1/2/3/4/5/6/7/8, and the switching value of the PMU are automatically mapped between each group of channels and different plug-ins of the integrated signal output device according to the sequence of the plug-ins corresponding to the groups.
8. The method according to claim 7, wherein the judging the correctness of the function of the analog quantity acquisition plug-in unit when the PMU device leaves factory batch tests according to the analog quantity voltage signal and the analog quantity current signal output by the test system comprises:
for the analog quantity sampling function, the number of analog quantity channels is M, a 2M +2 state sequence is constructed, and the first 2 state sequences carry out simultaneous addition testing on all the channels to find sampling channel hardware faults and sampling precision faults, wherein M is 6M;
and (3) adding the quantity of all the channels by a channel polling test method, judging whether the analog quantity sampling channel has a mapping error or an internal short-circuit fault, and positioning the fault through fault summarization.
9. The method according to claim 7, wherein judging the correctness of the function of the switching value acquisition plug-in unit when the PMU device leaves factory batch tests according to the output position of the detection system comprises:
for the switching value position acquisition and outlet position discrimination functions, the number of switching value channels is N, a 2N +2 state sequence is constructed, and the first 2 state sequences carry out simultaneous displacement test on all the channels to find the abnormal position of the hardware fault of the switching value channel, wherein N is 8N;
and (3) shifting all channels by a channel polling test method, judging whether the switching value channels have mapping errors or internal short-circuit faults, and positioning the faults by fault summarization.
10. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the method of any one of claims 4 to 9.
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