CN104849581A - System and method for monitoring combined test of over-current overload protective device - Google Patents
System and method for monitoring combined test of over-current overload protective device Download PDFInfo
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Abstract
The invention discloses a system and method for monitoring a combined test of an over-current overload protective device. The method comprises that a background host computer processes a testing case information configured by a human-machine interaction module and transmits the processed testing case information to a front-end processor; the front-end processor analyzes the processed testing case information as a control command; a master control board configures a corresponding channel in a digital output board; the output voltage of a DC adjustable power supply is output via the corresponding channel of the digital output board to provide a DC excitation signal; a relay protection tester configures output voltage to provide an AC excitation signal; an adapting device conditions a power signal the excitation signals, and a response signal; the master control board configures corresponding channels in a digital input board and an analog input board in order that the digital input board acquires a response signal of relay operation and the analog input board acquires the AC excitation signal; and the background host computer processes the response signal and outputs the same via the human-machine interaction module. The technical scheme disclosed by the invention solves problems of low efficiency and high requirements for operators.
Description
Technical Field
The invention relates to the field of nuclear power, in particular to a combined copying monitoring system and method of an overcurrent and overload protection device.
Background
The overcurrent overload protection device is composed of an overcurrent protection clamping piece, an overload protection clamping piece and a base in a public mode, the base provides a direct-current voltage source for the whole overcurrent overload protection device, and current signals of the current transformer are converted into voltage signals to be provided for the overcurrent protection clamping piece and the overload protection clamping piece. The function and performance of the overcurrent load protection device directly affect the safe and stable operation of the whole nuclear power plant power grid system. Therefore, the monitoring of the combination of the overcurrent and overload protection device and the copying is a work content which is urgently needed by the nuclear power station.
At present, the function of an overcurrent and overload protection device is periodically detected in a manual test mode by a nuclear power station so as to ensure the normal operation of the device. The method has the following defects: firstly, manual testing is generally to carry out power-up testing on the whole overcurrent and overload protection device, the functional state of a clamping piece in the device cannot be known, and when the device fails, the failure reason cannot be analyzed or failure positioning cannot be carried out through copying testing; secondly, the wiring of the device is complex during the test, and workers are required to be familiar with the function and the principle of the clamping piece; the manual test can not realize the automatic monitoring of the whole test process, and for a long-time copying test, experimenters must be on site, thus causing the waste of human resources; fourthly, the test records of the manual test can only be manually filled by testers, so that test information is easy to miss, and the test data is not easy to be filed.
Disclosure of Invention
The invention aims to solve the technical problems that the efficiency is low and the requirement on operators is high in the prior art, and provides a combined copying monitoring system and method of an overcurrent and overload protection device, which are high in testing efficiency and low in requirement on operators.
The technical scheme adopted by the invention for solving the technical problems is as follows: the monitoring system comprises a human-computer interaction module, a test signal source, a background host, a front-end processor, a switching power supply, an acquisition control device and an adapter device, wherein the test signal source comprises a relay protection tester and a direct-current adjustable power supply, and the acquisition control device comprises a main control board, a switching value output board, an analog input board and a switching value input board; wherein,
the human-computer interaction module is used for receiving test case information configured by a tester, sending the test case information to the background host and outputting response signals, wherein the response signals comprise response signals of relay actions and response signals of relay coil voltage;
the background host is connected with the man-machine interaction module and used for processing the received test case information and sending the test case information to the front-end processor; processing the received response signal and sending the processed response signal to the human-computer interaction module;
the front-end processor is connected with the background host and used for analyzing the received test case information into a control command and respectively sending the control command to the main control board, the relay protection tester and the direct-current adjustable power supply; sending the received response signal to the background host;
the main control board is connected with the front-end processor, the switching value output board, the analog input board and the switching value input board and is used for configuring corresponding channels in the switching value output board according to the received control commands; collecting a response signal of the relay action through the switching value input board, collecting an alternating current excitation signal through the analog value input board, and sending the response signal of the relay action and the alternating current excitation signal to the front-end processor;
the switching power supply is connected with the switching value output board and used for outputting voltage to the adaptive device through a corresponding channel of the switching value output board so as to provide a power supply signal for the overcurrent load protection device;
the direct current adjustable power supply is connected with the switching value output board and used for outputting voltage to the adaptation device through a corresponding channel of the switching value output board so as to provide a direct current excitation signal for the overcurrent load protection device;
the relay protection tester is connected with the front-end processor and used for configuring the current output by the front-end processor according to the received control command and outputting the current to the overcurrent and overload protection device through the adapting device so as to provide an alternating current excitation signal for the overcurrent and overload protection device;
and the adaptive device is connected with the switching value output board and the switching value input board, and is used for conditioning the received power signal and the excitation signal and sending the conditioned signals to the overcurrent load protection device, conditioning the response signal of the relay coil voltage and the response signal of the relay action, sending the response signal of the relay action to the switching value input board, and sending the response signal of the relay coil voltage to the front-end processor.
In the overcurrent and overload protection device combined copying monitoring system, the overcurrent and overload protection device combined copying monitoring system further comprises a cabinet, and the front-end processor, the switching power supply, the acquisition control device, the adapting device and the direct-current adjustable power supply are arranged in the cabinet.
In the combined copying monitoring system of the overcurrent and overload protection device, the background host is also used for calling the waveform of the standard response signal under the standard working condition stored in the case library, comparing the waveform with the waveform of the response signal obtained by testing, and outputting a fault alarm signal to the human-computer interaction module if the fluctuation exceeds a preset range.
In the combined copying monitoring system of the overcurrent and overload protection device, a temperature and humidity measurement and control board for collecting temperature and humidity information in the cabinet is also arranged in the cabinet.
In the combined copying monitoring system of the overcurrent and overload protection device, the adapter device comprises:
the base adapter device is respectively connected with the base of the acquisition control device and the base of the overcurrent and overload protection device;
the overcurrent protection card piece adapting device is respectively connected with the base and an overcurrent protection card piece of the overcurrent overload protection device;
the overload protection card adapting device is respectively connected with the base and an overload protection card of the overload protection device;
and the measurement and control board is respectively connected with the base adapter device and the front-end processor and used for acquiring a response signal of the voltage of the relay coil and sending the response signal into the front-end processor.
In the combined copying monitoring system of the overcurrent and overload protection device, the overcurrent protection card adapting device and the overload protection card adapting device are arranged in a first case in a cabinet, and the base adapting device is arranged in a second case in the cabinet.
In the combined copying monitoring system of the overcurrent and overload protection device, the base adapter device comprises:
the first terminal row is connected with the acquisition control device and the measurement and control board;
a second terminal row connected to the base of the overcurrent protection device;
an intermediate circuit connected to the first terminal row and the second terminal row for processing the stimulus signal, the power signal and the response signal.
In the combined copying monitoring system of the overcurrent and overload protection device, an optical coupler is arranged on each channel of the switching value input plate.
In the combined copying monitoring system of the overcurrent and overload protection device, a relay is arranged on each channel of the switching value output board.
The invention also discloses a method for monitoring by using the overcurrent and overload protection device combined copying monitoring system, which is characterized by comprising the following steps:
A. the background host computer processes the test case information configured by the human-computer interaction module and then sends the test case information to the front-end processor;
B. the front-end processor analyzes the received test case information into a control command and respectively sends the control command to the main control board, the relay protection tester and the direct-current adjustable power supply;
C. the main control board configures corresponding channels in the switching value output board according to the received control command, so that the output voltage of the switching power supply is output to the adaptive device through the corresponding channels of the switching value output board to provide power supply signals for the overcurrent load protection device; meanwhile, the output voltage of the direct current adjustable power supply is output to the adaptation device through a corresponding channel of the switching value output board so as to provide a direct current excitation signal for the overcurrent load protection device; the relay protection tester configures the output voltage according to the received control command and outputs the voltage to the adapting device so as to provide an alternating current excitation signal for the overcurrent load protection device;
D. the adaptation device conditions the received power signal and the excitation signal and sends the conditioned signals to the overcurrent overload protection device, conditions the response signal of the action of the relay of the overcurrent overload protection device and the response signal of the voltage of the relay coil, sends the response signal of the action of the relay to the switching value input board, and sends the response signal of the voltage of the relay coil to the front-end processor;
E. the main control board collects the response signal of the relay action through the switching value input board, collects the alternating current excitation signal through the analog value input board, and uploads the response signal of the relay action and the alternating current excitation signal to the background host through the front-end processor;
F. and the background host processes the received response signal and outputs the processed response signal through the human-computer interaction module.
In the method for monitoring the combined copying machine of the overcurrent and overload protection device, after the step E, the method further comprises the following steps:
the background host also calls the waveform of the standard signal under the standard working condition stored in the case library, compares the waveform with the waveform of the response signal obtained by testing, and outputs a fault alarm signal through the man-machine interaction module if the fluctuation exceeds a preset range.
In the method for monitoring the combined copying machine of the overcurrent and overload protection device, in the step a, the test case information includes:
configuring the running time and the stopping time of a relay protection tester, and configuring the relay protection tester to output at least one path of single-phase alternating current;
configuring the starting time and the stopping time of the switching power supply;
and configuring the switch state of the corresponding channel in the switching value output plate.
In the method for monitoring the combined copying machine of the overcurrent and overload protection device, in the step E,
the main control board sends the collected response signal of the relay action to the front-end processor in an SOE mode, and sends the collected alternating current excitation signal to the front-end processor at a preset sending interval.
By implementing the technical scheme of the invention, the monitoring system simulates the long-term continuous work of the over-current and over-load protection device under the condition of being separated from the nuclear power station application system, realizes the automatic and intelligent function test of the over-current and over-load protection device, and solves the problems of low test efficiency, high requirement on operators and the like of the over-current and over-load protection device by using the prior art.
Drawings
The invention will be further described with reference to the accompanying drawings and examples, in which:
FIG. 1 is a logic diagram of a combined copying monitoring system of an overcurrent and overload protection device according to a first embodiment of the present invention;
FIG. 2 is a logic diagram of a second embodiment of the combined copying monitoring system of the overcurrent and overload protection device according to the present invention;
fig. 3 is a flowchart of a first embodiment of a combined copying monitoring method of the overcurrent and overload protection device according to the present invention.
Detailed Description
Fig. 1 is a logic diagram of a first embodiment of a combined copying monitoring system of an overcurrent and overload protection device, the monitoring system includes a human-computer interaction module 108, a test signal source 103, a background host 107, a front-end processor 102, a switching power supply 109, an acquisition control device 104, an adapter 105, and an overcurrent and overload protection device (not shown), and the overcurrent and overload protection device includes an overcurrent protection card, an overload protection card, and a base. The test signal source 103 includes a relay protection tester 1031 and a dc adjustable power supply 1032, and the acquisition control device 104 includes a main control board 1041, a switching value output board 1042, an analog input board 1043, and a switching value input board 1044, for example, the main control board 1041 is of a type RP7001, the switching value input board 1044 is of a type RP7301, the switching value output board 1042 is of a type RP7321, and the analog input board 1043 is of a type RP 7105. Furthermore, the front-end processor 102 is connected with the background host 107 and the acquisition control device 104 through ethernet ports, the test signal source 103 is respectively connected with the front-end processor 102 and the acquisition control device 104, the switching power supply 109 is connected with the acquisition control device 104, the acquisition control device 104 and the adapter device 105 form an electrical port connection, and the adapter device 105 and the overcurrent overload protection device 106 form an electrical port connection.
In this embodiment, the functions of the parts are as follows:
a human-computer interaction module 108 for displaying the device data; receiving test case information configured by a tester and sending the test case information to the background host 107, and outputting a response signal of relay action and a waveform of a response signal of relay coil voltage, fault early warning information and the like;
the background host 107 is connected to the human-computer interaction module 108, and is used for processing the received response signal and sending the processed response signal to the human-computer interaction module 108; storing the related data; receiving and processing test case information and sending the test case information to the front-end processor 102, where the test case information includes, for example: configuring the running time and the stopping time of a relay protection tester, and configuring the relay protection tester to output at least one path of single-phase alternating current; configuring the starting time and the stopping time of the switching power supply; configuring the switching state of a corresponding channel in the switching value output board;
the front-end processor 102 is connected to the background host 107, and configured to parse the received test case information into a control command, and issue the control command to the main control board 1041, the relay protection tester 1031, and the dc adjustable power supply 1032 respectively; and send the received response signal to the background host 107;
a main control board 1041 connected to the front-end processor 102, the switching value output board 1042, the analog input board 1043, and the switching value input board 1044, and configured to configure corresponding channels in the switching value output board 1042 according to the received control command; collecting the response signal of the relay action through the switching value input board 1044, collecting the alternating current excitation signal through the analog value input board 1043, and sending the response signal of the relay action and the alternating current excitation signal to the front-end processor 102;
a switching power supply 109 connected to the switching value output board 1042 for outputting a voltage to the adaptation device 105 via a corresponding channel of the switching value output board 1042 to provide a power supply signal for the overcurrent protection device, for example, to provide a 24V supply voltage;
a dc adjustable power supply 1032 connected to the switching value output board 1042 for outputting a voltage to the adaptation device 105 through a corresponding channel of the switching value output board 1042 to provide a dc excitation signal for the overload protection device 106, for example, a dc test voltage of 125V is provided;
the relay protection tester 1031 is connected to the front-end processor 102 and configured to configure the output current thereof according to the received control command, for example, to output a 5A two-phase single-phase alternating current; and output to the over-current and over-load protection device through the adaptation device 105, in order to provide the alternating current excitation signal for the over-current and over-load protection device;
the switching value output board 1042 is connected with the direct current adjustable power supply 1032 and the switching power supply 109, and is used for controlling the starting time and the stopping time of the direct current adjustable power supply 1032 and the switching power supply 109, so as to provide a direct current excitation signal and a power supply signal for the overcurrent and overload protection device 106;
the analog quantity input board 1043 is connected with the relay protection tester 1031 and the main control board 1041 and is used for acquiring an alternating current excitation signal provided by the relay protection tester 1031;
the switching value input board 1044 is connected with the adapter device 105 and the main control board 1041 and is used for acquiring a response signal of the action of the relay flowing through the load protection device through the adapter device 105;
the adapter 105 is a signal conditioning circuit specially designed for the overcurrent and overload protection device to be tested, and is connected to the switching value output board 1042 and the switching value input board 1044, and is used for conditioning the received power signal and the excitation signal and sending the conditioned signals to the overcurrent and overload protection device, and conditioning the response signal of the relay action of the overcurrent and overload protection device and the response signal of the relay coil voltage, sending the response signal of the relay action to the switching value input board 1044, and sending the response signal of the relay coil voltage to the front-end processor 102.
When the monitoring system of this embodiment is used to monitor the overcurrent and overload protection device combination copying machine, the background host 107 processes the test case information configured by the human-computer interaction module 108 and sends the processed test case information to the front-end processor 102. The front-end processor 102 analyzes the received test case information into a control command, and issues the control command to the main control board 1041, the relay protection tester 1031, and the dc adjustable power supply 1032 respectively. The main control board 1041 configures a corresponding channel in the switching value output board 1042 according to the received control command, so that the output voltage of the switching power supply 109 is output to the adaptation device 105 through the corresponding channel of the switching value output board 1042 to provide a power supply signal for the overcurrent load protection device; meanwhile, the output voltage of the dc adjustable power supply 1032 is output to the adaptation device 105 through the corresponding channel of the switching value output board 1042, so as to provide a dc excitation signal for the overcurrent protection device; the relay protection tester 1031 configures the output voltage thereof according to the received control command and outputs the configured voltage to the adapting device to provide an ac excitation signal for the overcurrent protection device. The adaptation device 105 conditions the received power signal and excitation signal and sends them to the overcurrent overload protection device, and conditions the response signal of the relay action of the overcurrent overload protection device and the response signal of the relay coil voltage. The main control board 1041 collects a response signal of the relay action through the switching value input board 1042, collects an alternating current excitation signal through the analog value input board 1043, and uploads the response signal of the relay action and the alternating current excitation signal to the background host 107 through the front-end processor 102. The background host 107 processes the received response signal and outputs the processed response signal through the human-computer interaction module 108.
Further, the front-end processor 102, the switching power supply 109, the acquisition control device 104, the adaptation device 105, and the dc adjustable power supply 1032 are all disposed in the cabinet 101. Moreover, the adapter 105 of this embodiment includes a base adapter 1051, an overcurrent protection card adapter 1052, an overload protection card adapter 1053, and a measurement and control board 1054 connected by a gray row. Moreover, overcurrent protection card adapter 1052 and overload protection card adapter 1053 are disposed in a first enclosure (not shown) in cabinet 101, and base adapter 1051 is disposed in a second enclosure (not shown) in cabinet 101, and because the base and overcurrent protection card, overload protection card and their shape are different, they are easier to arrange in both enclosures.
Preferably, the background host 107 is further configured to call a waveform of the standard response signal under the standard working condition stored in the case library, compare the waveform with a waveform of the response signal obtained through the test, and output a fault alarm signal to the human-computer interaction module 108 if the fluctuation exceeds a preset range.
Preferably, a temperature and humidity measurement and control board (not shown) for collecting temperature and humidity information in the cabinet is further disposed in the cabinet 101. In addition, the temperature and humidity measurement and control board is substantially an analog quantity acquisition board, and is further configured to acquire voltages output by the dc adjustable power supply 1032 and the switching power supply 109, and send the voltages to the front-end processor 102.
Fig. 2 is a logic diagram of a second embodiment of the combined copy monitoring system of the overcurrent and overload protection device of the present invention, and it is first explained that in this embodiment, a base adapter 1051 is respectively connected to the acquisition control device 104 and the base, an overcurrent protection card adapter 1052 is respectively connected to the base and the overcurrent protection card, an overload protection card adapter 1053 is respectively connected to the base and the overload protection card, and a measurement and control board 1054 is respectively connected to the base adapter 1051 and the front-end processor, and is configured to acquire a response signal of a relay coil voltage and send the response signal to the front-end processor, where the measurement and control board 1054 is substantially an analog input board.
The base adapter 1051 further comprises: first terminal row, second terminal row and intermediate circuit, wherein, first terminal row connects in acquisition control device and observation and control board, and the second terminal row is connected in the base, and intermediate circuit connects in first terminal row and second terminal row, and is used for handling excitation signal, power signal and response signal.
In this embodiment, a relay is provided on each channel of the switching value output plate 1042, and only the switching contacts CJ39, CJ43, CJ27 of the relay are shown in the drawing. Each channel of the switching value input board 1044 is provided with an optical coupler, and light emitting diodes KI96, KI97 and KI98 in the three-way optical coupler are shown in the figure. In addition, the power signal, excitation signal and response signal acquisition ports are on the base. Pins C1/C2 and C3/C4 of the base are AC excitation signal access terminals, A1/A2 is DC excitation signal access terminals, and idle contacts S1/S3, S7/S8 and S10/S11 of the base are response signal access terminals for relay operation. The idle joint J2-6 on the overcurrent protection card and the idle joint J2-6 on the overload protection card correspond to the relays K1 and K2 on the base respectively, so that the states of the idle joint J2-6 and the idle joint J2-6 can be known only by monitoring the coil voltages of the relays K1 and K2.
In the combined copying process of the overcurrent and overload protection device, a power supply signal is provided by the switching power supply 109, an excitation signal is provided by the relay protection tester 1031 and the direct-current adjustable power supply 1032, wherein the A phase and the C phase of the relay protection tester 1031 output alternating current with the amplitude of 5A, and the direct-current adjustable power supply 1032 outputs direct-current voltage with the amplitude of 125V. The 5A ac current output by the relay protection tester 1031 is first sampled by an analog input board 1043, the a-phase current after passing through the analog input board 1043 is connected to the pin C1 of the base through the pin 1 of the base adapter 1051, the B-phase current is connected to the pin C3 of the base through the pin 3 of the base adapter 1051, and the pins C2 and C4 of the base are connected to the neutral point through the pins 2 and 4 of the base adapter 1051. The dc adjustable power source 1032 outputs 125V, the positive pole of the dc adjustable power source 1032 is connected to the pin 17 of the base adapter 1051 through the relay switch contact CJ39 of the switching value output board 1042 and then connected to the pin a2 of the base, and the pin a1 of the base is connected to the negative pole of the dc adjustable power source 1032 through the relay switch contact CJ43 of the switching value output board 1042. The switching power supply 109 mainly provides working voltage for the idle contact and the switching value input board 1044 acquisition component of the overcurrent overload protection device.
Power signals and excitation signals of the overcurrent protection card and the overload protection card are accessed from the base through respective adapter devices, pins J2-1 and J2-3 of the overcurrent protection card are accessed to alternating-current voltage of 0-10V through pins 1 and 3 of the adapter device 1052 of the overcurrent protection card, and pin J2-11 of the overcurrent protection card is accessed to a 24V main power supply through a pin port 11 of the adapter device 1052 of the overcurrent protection card. Pins J3-1 and J3-3 of the overload protection card are connected with 0 to 10V alternating voltage through pins 1 and 3 of a current protection card adapting device 1053, and pin J3-11 of the overload protection card is connected with 24V main power supply through pin 11 of the current protection card adapting device 1053. The overcurrent protection clamping piece and the overload protection clamping piece are respectively connected with the coils of the relays K1 and K2 in the base through the idle joints J2-6 and J3-6, and the state of the idle joints can be detected through measuring the voltage of the relays. The coil voltages of the relays K1 and K2 are collected through AD12 and 13 channels of the measurement and control board 1054. The on-off states of the idle contacts S3/S1, S8/S7 and S11/S10 on the base are collected by three channels of KI96, KI97 and KI98 of the switching value input board 1044.
After a test experiment is started, a system executes a test process according to a configuration sequence of test cases, and in the copying test process, response signals, excitation signals, temperature and humidity are displayed on a human-computer interaction interface, wherein switching value signals are described through signal lamps with different colors, for example, green signals represent on and red signals represent off, and analog quantity signals are displayed through real-time waveforms after being subjected to waveform processing. Meanwhile, the human-computer interaction module can also display various prompt messages of the test process, such as the use condition of the cabinet, the test process information, the test state of the test card, the fault alarm information of the test card and the like. The test state of the test card is distinguished by signal lamps with different colors, for example, green indicates that the test has no abnormal condition, red indicates that the test result is abnormal, and the test card prompts through literal fault alarm information. When the alarm is given in the test process, the tester can remotely terminate the test, so that the safety of the whole system is ensured.
In conclusion, when the combined copying machine of the overcurrent and overload protection device is monitored, the whole process does not need to be attended by personnel, long-time online monitoring can be realized, the test result can be displayed and reminded in a humanized manner, and the automatic and intelligent test and analysis of the overcurrent protection constant value action function and the overload protection constant value action function of the device are realized.
Fig. 3 is a flowchart of a first embodiment of a combined copying monitoring method of an overcurrent and overload protection device according to the present invention, where the monitoring method includes:
A. the background host computer processes the test case information configured by the human-computer interaction module and then sends the test case information to the front-end processor, and in the step, the test case information comprises the following steps: configuring the running time and the stopping time of a relay protection tester, and configuring the relay protection tester to output at least one path of single-phase alternating current; configuring the starting time and the stopping time of the switching power supply; configuring the switching state of a corresponding channel in the switching value output board;
B. the front-end processor analyzes the received test case information into a control command and respectively sends the control command to the main control board, the relay protection tester and the direct-current adjustable power supply;
C. the main control board configures corresponding channels in the switching value output board according to the received control command, so that the output voltage of the switching power supply is output to the adaptive device through the corresponding channels of the switching value output board to provide power supply signals for the overcurrent load protection device; meanwhile, the output voltage of the direct current adjustable power supply is output to the adaptation device through a corresponding channel of the switching value output board so as to provide a direct current excitation signal for the overcurrent load protection device; the relay protection tester configures the output voltage according to the received control command and outputs the voltage to the adapting device so as to provide an alternating current excitation signal for the overcurrent load protection device;
D. the adaptation device conditions the received power signal and the excitation signal and sends the conditioned signals to the overcurrent overload protection device, conditions the response signal of the action of the relay of the overcurrent overload protection device and the response signal of the voltage of the relay coil, sends the response signal of the action of the relay to the switching value input board, and sends the response signal of the voltage of the relay coil to the front-end processor;
E. the main control board collects the response signal of the relay action through the switching value input board, collects the alternating current excitation signal through the analog value input board, and uploads the response signal of the relay action and the alternating current excitation signal to the background host computer through the front-end processor;
F. and the background host processes the received response signal and outputs the processed response signal through the human-computer interaction module.
Preferably, after the step E, the method further comprises:
the background host also calls the waveform of the standard signal under the standard working condition stored in the case library, compares the waveform with the waveform of the response signal obtained by testing, and outputs a fault alarm signal through the man-machine interaction module if the fluctuation exceeds a preset range.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.
Claims (13)
1. The monitoring system is characterized by comprising a human-computer interaction module, a test signal source, a background host, a front-end processor, a switching power supply, an acquisition control device and an adaptive device, wherein the test signal source comprises a relay protection tester and a direct-current adjustable power supply, and the acquisition control device comprises a main control board, a switching value output board, an analog input board and a switching value input board; wherein,
the human-computer interaction module is used for receiving test case information configured by a tester, sending the test case information to the background host and outputting response signals, wherein the response signals comprise response signals of relay actions and response signals of relay coil voltage;
the background host is connected with the man-machine interaction module and used for processing the received test case information and sending the test case information to the front-end processor; processing the received response signal and sending the processed response signal to the human-computer interaction module;
the front-end processor is connected with the background host and used for analyzing the received test case information into a control command and respectively sending the control command to the main control board, the relay protection tester and the direct-current adjustable power supply; sending the received response signal to the background host;
the main control board is connected with the front-end processor, the switching value output board, the analog input board and the switching value input board and is used for configuring corresponding channels in the switching value output board according to the received control commands; collecting a response signal of the relay action through the switching value input board, collecting an alternating current excitation signal through the analog value input board, and sending the response signal of the relay action and the alternating current excitation signal to the front-end processor;
the switching power supply is connected with the switching value output board and used for outputting voltage to the adaptive device through a corresponding channel of the switching value output board so as to provide a power supply signal for the overcurrent load protection device;
the direct current adjustable power supply is connected with the switching value output board and used for outputting voltage to the adaptation device through a corresponding channel of the switching value output board so as to provide a direct current excitation signal for the overcurrent load protection device;
the relay protection tester is connected with the front-end processor and used for configuring the current output by the front-end processor according to the received control command and outputting the current to the overcurrent and overload protection device through the adapting device so as to provide an alternating current excitation signal for the overcurrent and overload protection device;
and the adaptive device is connected with the switching value output board and the switching value input board, and is used for conditioning the received power signal and the excitation signal and sending the conditioned signals to the overcurrent load protection device, conditioning the response signal of the relay coil voltage and the response signal of the relay action, sending the response signal of the relay action to the switching value input board, and sending the response signal of the relay coil voltage to the front-end processor.
2. The combined copying monitoring system for the overcurrent and overload protection device as claimed in claim 1, wherein the combined copying monitoring system for the overcurrent and overload protection device further comprises a cabinet, and the front-end processor, the switching power supply, the acquisition control device, the adapting device and the direct-current adjustable power supply are arranged in the cabinet.
3. The combined copying monitoring system of the overcurrent and overload protection device as recited in claim 1, wherein the background host is further configured to call a waveform of the standard response signal stored in the case library under the standard working condition, compare the waveform with a waveform of the response signal obtained by the test, and output a fault alarm signal to the human-computer interaction module if the fluctuation exceeds a preset range.
4. The combined copying monitoring system of the overcurrent and overload protection device as recited in claim 2, wherein a temperature and humidity measurement and control board for collecting temperature and humidity information in the cabinet is further arranged in the cabinet.
5. The combined copying monitoring system for the overcurrent and overload protection device as recited in claim 2, wherein the adapting device comprises:
the base adapter device is respectively connected with the base of the acquisition control device and the base of the overcurrent and overload protection device;
the overcurrent protection card piece adapting device is respectively connected with the base and an overcurrent protection card piece of the overcurrent overload protection device;
the overload protection card adapting device is respectively connected with the base and an overload protection card of the overload protection device;
and the measurement and control board is respectively connected with the base adapter device and the front-end processor and used for acquiring a response signal of the voltage of the relay coil and sending the response signal into the front-end processor.
6. The combined over-current and over-load protection device copying monitoring system as claimed in claim 5, wherein the over-current protection card adapting device and the over-load protection card adapting device are disposed in a first case in a cabinet, and the base adapting device is disposed in a second case in the cabinet.
7. The combined copying monitoring system for the overcurrent and overload protection device as recited in claim 5, wherein the base adapting device comprises:
the first terminal row is connected with the acquisition control device and the measurement and control board;
a second terminal row connected to the base of the overcurrent protection device;
an intermediate circuit connected to the first terminal row and the second terminal row for processing the stimulus signal, the power signal and the response signal.
8. The combined copying and monitoring system for the overcurrent and overload protection device as recited in claim 1, wherein an optical coupler is arranged on each channel of the switching value input board.
9. The combined copying and monitoring system of the overcurrent and overload protection device as recited in claim 1, wherein a relay is arranged on each channel of the switching value output board.
10. A method for monitoring by using the overcurrent and overload protection device combined copying monitoring system as claimed in claim 1, which is characterized by comprising the following steps:
A. the background host computer processes the test case information configured by the human-computer interaction module and then sends the test case information to the front-end processor;
B. the front-end processor analyzes the received test case information into a control command and respectively sends the control command to the main control board, the relay protection tester and the direct-current adjustable power supply;
C. the main control board configures corresponding channels in the switching value output board according to the received control command, so that the output voltage of the switching power supply is output to the adaptive device through the corresponding channels of the switching value output board to provide power supply signals for the overcurrent load protection device; meanwhile, the output voltage of the direct current adjustable power supply is output to the adaptation device through a corresponding channel of the switching value output board so as to provide a direct current excitation signal for the overcurrent load protection device; the relay protection tester configures the output voltage according to the received control command and outputs the voltage to the adapting device so as to provide an alternating current excitation signal for the overcurrent load protection device;
D. the adaptation device conditions the received power signal and the excitation signal and sends the conditioned signals to the overcurrent overload protection device, conditions the response signal of the action of the relay of the overcurrent overload protection device and the response signal of the voltage of the relay coil, sends the response signal of the action of the relay to the switching value input board, and sends the response signal of the voltage of the relay coil to the front-end processor;
E. the main control board collects the response signal of the relay action through the switching value input board, collects the alternating current excitation signal through the analog value input board, and uploads the response signal of the relay action and the alternating current excitation signal to the background host through the front-end processor;
F. and the background host processes the received response signal and outputs the processed response signal through the human-computer interaction module.
11. The combined copying monitoring method for the overcurrent and overload protection device according to claim 10, wherein after the step E, the method further comprises:
the background host also calls the waveform of the standard signal under the standard working condition stored in the case library, compares the waveform with the waveform of the response signal obtained by testing, and outputs a fault alarm signal through the man-machine interaction module if the fluctuation exceeds a preset range.
12. The combined copying monitoring method for the overcurrent and overload protection device according to claim 10, wherein in the step a, the test case information includes:
configuring the running time and the stopping time of a relay protection tester, and configuring the relay protection tester to output at least one path of single-phase alternating current;
configuring the starting time and the stopping time of the switching power supply;
and configuring the switch state of the corresponding channel in the switching value output plate.
13. The combined copying monitoring method for the overcurrent and overload protection device according to claim 10, wherein in the step E,
the main control board sends the collected response signal of the relay action to the front-end processor in an SOE mode, and sends the collected alternating current excitation signal to the front-end processor at a preset sending interval.
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