CN104375038B - A kind of expansible closed-loop synchronization distribution power automation terminal detection platform and method - Google Patents
A kind of expansible closed-loop synchronization distribution power automation terminal detection platform and method Download PDFInfo
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Abstract
The invention discloses a kind of expansible closed-loop synchronization distribution power automation terminal detection platform and method, including inspection software system, power module, communication module, synchronised clock, signal source, switching value module and the standardization detection interface group being connect respectively with power module；Communication module is connect respectively with inspection software system, signal source and switching value module；Synchronised clock is connect respectively with inspection software system, signal source and switching value module；Signal source and switching value module and corresponding standardization detection interface group connection；Signal source, switching value module and standardization detection interface are expansible, and connection of the interface group realization with being tested automatization terminal is detected by standardization；The present invention can realize the full-automatic closed-loop synchronization detection of the synthesis of more station terminals；Data generation examining report is automatically analyzed, improves the efficiency and precision of detection；To the distribution power automation terminal of different producers, different model, the verifying bench of a standard is provided.
Description
Technical field
The present invention relates to a kind of expansible closed-loop synchronization distribution power automation terminal detection platforms, belong to electric power system power distribution
Automatic field.
Background technology
Acquisition and adjusting control of the distribution power automation terminal for controller switching equipment operation data, are electrical power distribution automatization systems
Can basic component units, performance and reliability directly influence whole system and effectively play a role.
Currently for the detection of distribution power automation terminal, the open loop for realizing various simple functions using distinct device detects,
Plurality of devices and numerous and diverse testing process are needed, while needs artificial participation, seriously affects detection efficiency and precision.
For the irregular of different manufacturers, the distribution power automation terminal quality of different model and function, need there are one
The verifying bench of standard is dispatched from the factory, is networked or in detections such as nets.
Invention content
In order to solve the above technical problem, the present invention provides a kind of expansible closed-loop synchronization distribution power automation terminal inspections
Platform and method are surveyed, distribution power automation terminal is solved and carries out that open loop detection leads to efficiency and precision is low asks using distinct device
Topic.
In order to achieve the above object, the technical solution adopted in the present invention is：A kind of expansible closed-loop synchronization distribution is certainly
Dynamicization terminal detection platform, it is characterised in that：It is connect respectively including inspection software system, power module, with the power module
Communication module, synchronised clock, signal source, switching value module and standardization detection interface group；Communication module respectively with inspection
Survey software systems, signal source is connected with switching value module；Synchronised clock respectively with inspection software system, signal source and switch
Measure detection module connection；The signal source and switching value module and corresponding standardization detection interface group connection；The letter
Number source, switching value module and standardization detection interface are expansible, by standardization detect interface group realize with it is tested eventually
The connection at end.
A kind of aforementioned expansible closed-loop synchronization distribution power automation terminal detection platform, it is characterised in that：In use, institute
It states power module to connect with tested distribution power automation terminal, the straight-adjustable galvanic electricity that amplitude is 0 ~ 110V is provided.
A kind of aforementioned expansible closed-loop synchronization distribution power automation terminal detection platform, it is characterised in that：In use, institute
It states power module, communication module, synchronised clock to connect with tested distribution power automation terminal respectively, the signal source, switching value inspection
Module is surveyed to connect with tested distribution power automation terminal by standardization detection interface group.
A kind of aforementioned expansible closed-loop synchronization distribution power automation terminal detection platform, it is characterised in that：The switch
It is synchronous with measured terminal by synchronised clock realization to measure detection module；The signal source is realized by synchronised clock and measured terminal
It is synchronous；The communication module is realized synchronous with measured terminal by synchronised clock.
A kind of aforementioned expansible closed-loop synchronization distribution power automation terminal detection platform, it is characterised in that：The signal
Source detects interface group by standardization and is applied to measured terminal, realizes telemetry function detection；The switching value module receives
Measured terminal remote control contact output, realizes the distant control function detection to terminal；The switching value module simulation exports remote signalling
Displacement detects interface group by standardization and is applied to measured terminal, realizes the remote signaling function detection to terminal.
A kind of inspection of expansible closed-loop synchronization distribution power automation terminal detection platform based on any of the above-described claim
Survey method, it is characterized in that：Including：
1）Closed-loop telemetry detects：The detection scheme or expert solution library is called to lead to that inspection software system is edited according to user
Communication module transmitting order to lower levels is crossed to signal source, signal source analog telemetering value is by detecting interface group to measured terminal, measured terminal
Telemetry is uploaded by communication module and gives inspection software system, inspection software network analysis comparison obtains testing result, and raw
Into examining report；
2）Closed-loop remote control detects：The detection scheme or expert solution library is called to lead to that inspection software system is edited according to user
It crosses communication module and issues remote control select command to measured terminal, measured terminal is returned to school soft to detecting by communication module transmission remote control
Part system, inspection software system, which receives, issues remote control execution after remote control is returned to school, otherwise issue remote control revocation, i.e. remote control performs correctly
Property experiment；When being remotely controlled correct perform, measured terminal remote control contact output, switching value module should by detecting interface group acquisition
Contact output is remotely controlled, and passes through communication module and feeds back to inspection software system, inspection software network analysis comparison obtains detection knot
Fruit, and generate examining report；When remote control performs mistake, issue remote control command from inspection software system and remote control time of returning to school is waited for surpass
When, inspection software system issues remote control revocation to measured terminal, and measured terminal judges without remote control contact output, inspection software system
Measured terminal remote control performs mistake；
3）Closed loop remote signalling detects：The detection scheme or expert solution library is called to lead to that inspection software system is edited according to user
It crosses communication module transmitting order to lower levels and gives switching value module, the band markers remote signalling of switching value module simulation is indexed through detection and connects
Mouth group uploads remote signalling data by communication module and gives inspection software system, inspection software system point to measured terminal, measured terminal
Analysis compares and obtains detection data, and can generate examining report.
A kind of aforementioned expansible closed-loop synchronization distribution power automation terminal detection method, it is characterised in that：The closed loop
Telemetering detection includes elementary error detection, influences detection, the detection of fault current ability to bear, the detection of telemetering response time and telemetering
Threshold Crossing Alert Function detection.
A kind of aforementioned expansible closed-loop synchronization distribution power automation terminal detection method, it is characterised in that：The closed loop
Remote control detection includes remote control and performs correctness experiment and remote control retention time setting Function detection.
A kind of aforementioned expansible closed-loop synchronization distribution power automation terminal detection method, it is characterised in that：The closed loop
Remote signalling detection includes the detection of remote signalling state correctness, the detection of SOE resolution ratio, the detection of switch stabilization and the inspection of remote signalling response time
It surveys.
The advantageous effect that the present invention is reached：The expansible multigroup switching value module of detection platform, multigroup detection interface
Group and multigroup signal source, realize that more station terminals detect simultaneously；Inspection software system is realized and signal source, switch by synchronised clock
It is synchronous with measured terminal to measure detection module；By the way that communication module is called to realize to IEC 60870-5-104 or IEC 60870-
5-101 Telecontrol Protocols communicate, and detect whether link communication between main website and terminal is normal, and whether application function meets stipulations will
It asks, the system command including stipulations frame format and transmission rule inspection, control direction and monitoring direction is examined and remote action data
The stipulations such as verifying correctness detect；The present invention can realize the full-automatic closed-loop synchronization detection of the synthesis of more Intelligent power distribution terminals；
It automatically analyzes data and generates examining report, improve the efficiency and precision of detection；Different producer, different model are matched
Electric automation terminal provides the verifying bench of a standard.
Description of the drawings
Fig. 1 is expansible closed-loop synchronization distribution power automation terminal detection platform schematic diagram；
Fig. 2 is the connection diagram of distribution power automation terminal detection；
Fig. 3 is telemetering overhaul flow chart；
Fig. 4 is remote control overhaul flow chart；
Fig. 5 is remote signalling overhaul flow chart.
Specific embodiment
The invention will be further described below in conjunction with the accompanying drawings.Following embodiment is only used for clearly illustrating the present invention
Technical solution, and be not intended to limit the protection scope of the present invention and limit the scope of the invention.
As shown in Figure 1, a kind of expansible closed-loop synchronization distribution power automation terminal detection platform, including inspection software system
System, power module, the communication module being connect respectively with the power module, synchronised clock, signal source, switching value module and
Standardization detection interface group；Communication module is connect respectively with inspection software system, signal source and switching value module；When synchronous
Clock is connect respectively with inspection software system, signal source and switching value module；The signal source and switching value module with
Corresponding standardization detection interface group connection；The signal source, switching value module and standardization detection interface are expansible,
Interface group realization and the connection of measured terminal are detected by standardization.
Inspection software system using the various functions detection of tested distribution power automation terminal method, with each module of platform with
And the synchronizing of measured terminal, stipulations parsing and communication control etc., it is achieved thereby that tested distribution power automation terminal closed loop is same
Step detection.
Inspection software system is realized synchronous with signal source, switching value module and measured terminal by synchronised clock；
Inspection software system realizes that data interaction with more measured terminals and communication protocol detect by communication module.Inspection software system
System is exported by communication module call signal source analog telemetering value to measured terminal, and pass through communication module and feed back telemetry
Give inspection software system；Inspection software system issues remote control command to measured terminal by communication module, and measured terminal passes through inspection
It surveys interface detection and obtains remote control contact output, inspection software system is given by switching value module feedback；Inspection software system
Switching value module simulation remote signalling is called to conjugate to measured terminal by communication module, it is by communication module that remote signalling data is anti-
It feeds inspection software system；
Inspection software system be responsible for modules coordination and each Function detection during control and information transmit, it is real
The detections such as existing telemetering, remote control, remote signalling.Inspection software system realizes the foundation from detection scheme, is issued to acquisition feedback data, than
Testing result is obtained, and generate detection report to analysis, realizes the closed-loop synchronization detecting system of each function module.
Power module also provides required DC power supply to be tested more station terminals, and 0 ~ 110V of amplitude is adjustable, and can be used as distant
Required DC power supply during letter detection.
Communication module realizes the communication with terminal, is realized by communication module to IEC 60870-5-104 or IEC
60870-5-101 Telecontrol Protocols communicate, and the more station terminals that can realize 104/101 simultaneously whiles is detected.
Synchronised clock passes through synchronizing network（GPS/ Big Dippeves dual-mode sync, IRIG-B codes, PPS pulse per second (PPS)s）It is same into row clock
Step, synchronization is provided for entire detecting system.
Signal source is using 16 high-precision analog-digital chips and high-fidelity power amplifier and with reference to DSP+FPGA+
MPU（DSP：Digital signal processor；FPGA：Field programmable gate array；MPU：Microprocessor）Comprehensive Control, to fundamental wave
The high density fitting sine wave per 50000 points of cycle is generated, generates the alternating voltage current signal of adjustable amplitude, frequency, phase,
I.e. stackable harmonic wave, and the failures such as generation [2In, lasting output], [10In, exporting for 10 seconds], [20In, exporting for 1 second] can be simulated
Electric current, wherein In represent the alternating current rated value of distribution power automation terminal.It is synchronized down based on high precision clock, generates band markers
Telemetering jump signal, for the telemetering response time detect use.
Switching value module structure one based under high-precise synchronization clock quantity of state, operation and control signal
Platform；It can be conjugated with simulation output remote signalling, realize the remote signaling function detection to terminal；The remote control contact output of terminal can be received
Signal realizes the Function detection to controlling and operating.
As shown in Fig. 2, power module and the power interface of terminal connect, working power is provided for it；Communication module passes through
Communication network winding thread and the communication interface of terminal connect, and synchronised clock module passes through synchronous signal line and the synchronizing signal interface of terminal
Connection, signal source are connected by detecting the telemetering port of interface group and terminal, and simulation output telemetering amount sends terminal to；Switching value
Detection module is connected by detecting the remote signalling port of interface group and terminal, and emulation mode amount signal is to terminal；Switching value mould
Block is connected by detecting the remote control port of interface group and terminal, receives the remote signal of terminal.
According to the detection method of above-mentioned expansible closed-loop synchronization distribution power automation terminal detection platform, including following three
Kind：
1）Closed-loop telemetry detects：The detection scheme or expert solution library is called to lead to that inspection software system is edited according to user
Measurement, fault-current signal line communication module transmitting order to lower levels are crossed to signal source, the various high-precision telemetry values of signal source simulation are led to
Detection interface group is crossed to measured terminal, measured terminal uploads telemetry by communication module and gives inspection software system, and detection is soft
Part network analysis comparison obtains testing result, and can generate examining report.
2）Closed-loop remote control detects：The detection scheme or expert solution library is called to lead to that inspection software system is edited according to user
It crosses communication module and issues remote control selection to measured terminal, measured terminal, which sends to be remotely controlled to return to school by communication module, gives inspection software system
System, inspection software system, which receives, issues remote control execution after remote control is returned to school, otherwise issue remote control revocation, i.e. remote control performs correctness reality
It tests；When remote control correctly performs, measured terminal remote control contact output, switching value module obtains the remote control by detecting interface group
Contact exports, and passes through communication module and feed back to inspection software system, and inspection software network analysis comparison obtains testing result, and
Examining report can be generated；When remote control performs mistake, issue remote control command waiting from inspection software system and be remotely controlled time time-out of returning to school
, inspection software system, which issues, is remotely controlled revocation to measured terminal, and measured terminal judges quilt without remote control contact output, inspection software system
It surveys terminal remote control and performs mistake.
3）Closed loop remote signalling detects：The detection scheme or expert solution library is called to lead to that inspection software system is edited according to user
It crosses communication module transmitting order to lower levels and gives switching value module, the band markers remote signalling of switching value module simulation is indexed through detection and connects
Mouth group uploads remote signalling data by communication module and gives inspection software system, inspection software system point to measured terminal, measured terminal
Analysis compares and obtains detection data, and can generate examining report.
Introduce individually below based on the present invention detection platform closed-loop telemetry, remote control, remote signalling specific detection method：
1. closed-loop telemetry testing process：
Telemetry function detection refers to comprising elementary error, influence amount, fault current ability to bear, the telemetering response time, gets over
The telemetering amount detection of alarm function etc. is limited, closed-loop telemetry testing process is as shown in figure 3, detecting step includes：
1) inspection software system by synchronised clock realize with signal source, measured terminal it is synchronous；
2) inspection software system calls detection scheme or expert solution library to send analog quantity/failure electricity by communication module
Stream+retention time/more limit value+retention time is to signal source；
3) signal source applies various telemetering amounts to measured terminal by detecting interface group；
4) measured terminal uploads telemetry by communication module and gives inspection software system；
5) data that inspection software system docking receives are compared, and obtain testing result.
The signal source of detection platform generates the alternating voltage current signal of adjustable amplitude, frequency, phase（Stackable harmonic wave）
Terminal is supplied to, realizes the detection of the elementary errors such as voltage, electric current, active power, reactive power, power factor (PF).
Realize that the exchange telemetering input frequency variation of terminal, exchange telemetering input is uneven, exchange telemetering input waveform is abnormal
The influence amount detection of change etc..
Simulation generates the fault currents such as [2In, lasting output], [10In, exporting for 10 seconds], [20In, exporting for 1 second], detection
The fault current ability to bear of terminal realizes the detection of fault current ability to bear.
Detection platform is in setting sometime to terminal output amplitude variable voltage or current signal, pseudo-terminal
With detection terminal from scene voltage magnitude mutation occurs for the of ac acquisition when power grid receives interference, to detecting that this is prominent
Time needed for becoming realizes the detection of telemetering response time.
By changing output amplitude and duration, while the Threshold Crossing Alert remote signals of terminal are obtained, that is, realize telemetering
Threshold Crossing Alert Function detection.
2. closed-loop remote control testing process：
Distant control function detection refers to distant comprising detections, closed loops such as remote control execution correctness, remote control retention time setting functions
Testing process is controlled as shown in figure 4, detecting step includes：
2.1 remote controls perform correctness experiment：
Detection platform is selected, is returned to school, is performed（Or revocation）, judge whether remote control performs, that is, realize that remote control performs just
True property experiment, detecting step are as follows：
1) inspection software system by clock synchronize realize with switching value module, measured terminal it is synchronous；
2) inspection software system issues remote control select command to measured terminal by communication module, remote control is waited for return to school, such as
Flow is 1. shown in Fig. 4；
3) measured terminal is returned to school by communication module transmission and gives inspection software system, as flow is 2. shown in Fig. 4；
4) inspection software system is received after remote control returns to school, and issuing remote control by communication module performs order to measured terminal,
As flow is 3. shown in Fig. 4；
5) it after measured terminal receives remote control execution order, returns and performs acknowledgement frame, and start remote control contact and export, walk above
It is rapid to represent that remote control performs correctly；
If 6) step 3）In, measured terminal, which does not send to return to school, gives inspection software system, then inspection software system sends remote control
It countermands an order to measured terminal, for measured terminal without remote control contact output, inspection software system judges that measured terminal remote control performs mistake
Accidentally；
7) inspection software system according to testing result, generates examining report.
2.2 remote control retention time setting Function detections：
The remote control retention time of terminal, the rising edge of detection platform capture terminal remote control contact output signal and decline are set
It along signal, calculates the remote control retention time of terminal and makes comparisons, that is, realize remote control retention time setting Function detection, detection step
It is rapid as follows：
1) step is according to 1 in above-mentioned 2.1）、2）、3）、4）、5）After execution, when remote control performs correct, start remote control contact
Output；
2) switching value module obtains remote control contact output by detecting interface group, and passes through communication module and feed back to
Inspection software system, inspection software network analysis comparison obtain testing result；
3) after inspection software system obtains testing result, examining report is generated.
3. closed loop remote signalling testing process：
Remote signaling function detection refers to comprising remote signalling state correctness, remote signalling response time, SOE resolution ratio（Event sequence is remembered
Record）, the detections such as switching value stabilization；Closed loop remote signalling testing process is as shown in figure 5, step includes：
1) inspection software system by clock synchronize realize with switching value module, measured terminal it is synchronous；
2) inspection software system calls detection scheme or expert solution library, and sending remote signalling by communication module conjugates to opening
Measure detection module in pass；
3) switching value module is conjugated by detecting interface group application remote signalling to measured terminal；
4) measured terminal uploads remote signalling data by communication module and gives inspection software system；
5) inspection software system compares analysis, obtains testing result.
Detection platform sends out on-off model, analog field device action event, to examine whether terminal can correctly identify,
Realize the detection of remote signalling state correctness.
After detection platform is when GPS/ Big Dipper standard time or IRIG-B code time synchronizations pair, in setting sometime
To terminal export a switching value, analog field device action event, with detect from terminal filed occurrence of equipment action event, until
It detects the time needed for this action, that is, realizes the detection of remote signalling response time.
Detection platform sends out two-way interval time adjustable rising edge of a pulse using hight-speed CMOS switch, and the two of the scene of simulating
Whether a action event can correctly identify two events with detection terminal, that is, realize the detection of SOE resolution ratio.
Detection platform sends out the adjustable rising edge of a pulse of interval time all the way using hight-speed CMOS switch, and the scene of simulating is not
With the action event of pulsewidth, whether met the requirements with the stabilization function of detection terminal, that is, realize the detection of switching value stabilization.
The expansible multigroup switching value module of detection platform of the present invention, multigroup detection interface group and multigroup signal source,
Realize that more station terminals detect simultaneously；Detection platform is realized by communication module to IEC 60870-5-104 or IEC 60870-5-
101 Telecontrol Protocols communicate, and detect whether link communication between main station system and terminal is normal, and whether application function meets stipulations will
It asks.The present invention carries out system to the distribution power automation terminal of different manufacturers, different model and comprehensively detects, including communication protocol,
Remote signalling, telemetering, distant control function and performance detection, the scalability of detection platform is the inspections such as terminal factory inspection and acceptance, operation and networking
It surveys and realizes batch detection, form the manufacture, networking or the examination criteria in net etc. of a standard.
The above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, several improvement and deformation can also be made, these are improved and deformation
Also it should be regarded as protection scope of the present invention.
Claims (8)
1. a kind of expansible closed-loop synchronization distribution power automation terminal detection platform, it is characterised in that：Including inspection software system,
Power module, communication module, synchronised clock, signal source, switching value module and the mark being connect respectively with the power module
Standardization detects interface group；Communication module is connect respectively with inspection software system, signal source and switching value module；Synchronised clock
It is connect respectively with inspection software system, signal source and switching value module；The signal source and switching value module with it is right
The standardization detection interface group connection answered；The signal source, switching value module and standardization detection interface are expansible, lead to
Cross standardization detection interface group realization and the connection of measured terminal；
Inspection software system is realized synchronous with signal source, switching value module and measured terminal by synchronised clock；Detection
Software systems realize that data interaction with more measured terminals and communication protocol detect by communication module；Inspection software system is led to
It crosses communication module call signal source analog telemetering value to export to measured terminal, and passes through communication module and telemetry is fed back into inspection
Survey software systems；Inspection software system issues remote control command to measured terminal by communication module, and measured terminal is connect by detection
Mouth detection obtains remote control contact output, and inspection software system is given by switching value module feedback；Inspection software system passes through
Communication module calls switching value module simulation remote signalling to conjugate to measured terminal, is fed back to remote signalling data by communication module
Inspection software system.
2. a kind of expansible closed-loop synchronization distribution power automation terminal detection platform according to claim 1, feature exist
In：In use, the power module is connect with tested distribution power automation terminal, the straight-adjustable galvanic electricity that amplitude is 0~110V is provided.
3. a kind of expansible closed-loop synchronization distribution power automation terminal detection platform according to claim 1, feature exist
In：In use, the power module, communication module, synchronised clock are connect respectively with tested distribution power automation terminal, the signal
Source, switching value module detect interface group by standardization and are connect with tested distribution power automation terminal.
4. a kind of expansible closed-loop synchronization distribution power automation terminal detection platform according to claim 1, feature exist
In：The switching value module is realized synchronous with measured terminal by synchronised clock；The signal source passes through synchronised clock reality
It is now synchronous with measured terminal；The communication module is realized synchronous with measured terminal by synchronised clock.
5. a kind of expansible closed-loop synchronization distribution power automation terminal detection platform according to claim 1, feature exist
In：The signal source detects interface group by standardization and is applied to measured terminal, realizes telemetry function detection；The switching value inspection
It surveys module and receives measured terminal remote control contact output, realize the distant control function detection to terminal；The switching value module mould
Intend output remote signalling displacement, detecting interface group by standardization is applied to measured terminal, realizes the remote signaling function detection to terminal.
6. a kind of expansible closed-loop synchronization distribution power automation terminal detection platform according to any of the above-described claim
Detection method, it is characterized in that：Including：
1) closed-loop telemetry detects：The detection scheme or calling expert solution library that inspection software system is edited according to user pass through logical
Module transmitting order to lower levels is interrogated to signal source, by detecting interface group to measured terminal, measured terminal passes through signal source analog telemetering value
Communication module uploads telemetry and gives inspection software system, and inspection software network analysis comparison obtains testing result, and generate inspection
Observe and predict announcement；
2) closed-loop remote control detects：The detection scheme or calling expert solution library that inspection software system is edited according to user pass through logical
News module issues remote control select command to measured terminal, and measured terminal, which sends to be remotely controlled to return to school by communication module, gives inspection software system
System, inspection software system, which receives, issues remote control execution after remote control is returned to school, otherwise issue remote control revocation, i.e. remote control performs correctness reality
It tests；When remote control correctly performs, measured terminal remote control contact output, switching value module obtains the remote control by detecting interface group
Contact exports, and passes through communication module and feed back to inspection software system, and inspection software network analysis comparison obtains testing result, and
Generate examining report；When remote control performs mistake, issue remote control command waiting from inspection software system and be remotely controlled time time-out of returning to school, inspection
It surveys software systems and issues remote control revocation to measured terminal, without remote control contact output, inspection software system judges tested measured terminal
Terminal remote control performs mistake；
3) closed loop remote signalling detects：The detection scheme or calling expert solution library that inspection software system is edited according to user pass through logical
News module transmitting order to lower levels gives switching value module, and the band markers remote signalling of switching value module simulation is indexed through detection interface group
To measured terminal, measured terminal uploads remote signalling data by communication module and gives inspection software system, inspection software network analysis ratio
To obtaining detection data, and examining report can be generated；The closed loop remote signalling detection includes the detection of remote signalling state correctness, SOE divides
Resolution detection, the detection of switch stabilization and the detection of remote signalling response time.
7. a kind of detection method according to claim 6, it is characterised in that：The closed-loop telemetry detection includes elementary error
Detection influences detection, the detection of fault current ability to bear, the detection of telemetering response time and telemetering Threshold Crossing Alert Function detection.
8. a kind of detection method according to claim 6, it is characterised in that：The closed-loop remote control detection includes remote control and performs
Correctness is tested and remote control retention time setting Function detection.
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| CN104731068A (en) * | 2015-03-05 | 2015-06-24 | 成都振中电气有限公司 | Data collecting control device applied to power distribution system |
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