CN111487498B - Distribution automation remote availability test system and method - Google Patents
Distribution automation remote availability test system and method Download PDFInfo
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- CN111487498B CN111487498B CN202010432840.0A CN202010432840A CN111487498B CN 111487498 B CN111487498 B CN 111487498B CN 202010432840 A CN202010432840 A CN 202010432840A CN 111487498 B CN111487498 B CN 111487498B
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- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
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- H04L63/04—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks
- H04L63/0428—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks wherein the data content is protected, e.g. by encrypting or encapsulating the payload
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Abstract
The invention relates to a distribution automation remote availability test system and a method, comprising a main test cabinet and a field control cabinet group used for connecting a distribution automation terminal to be tested; the field control cabinet group comprises a wiring cabinet, a communication cabinet and a sampling cabinet; the relay protection tester transmits a test signal to the target power distribution automation terminal based on the output control signal; after transmission signal is received at the target distribution automation terminal, the test feedback communicator sends a set of feedback control instruction and gives the target distribution automation terminal with the sampling cabinet, the sampling cabinet receives after the feedback control instruction, the sampling the output of the corresponding circuit of target distribution automation terminal, the sampling cabinet feeds back to the signal processing back to the test feedback communicator, the test feedback communicator transmits the received feedback to the industrial control host computer, and the data analysis processing is carried out to the industrial control host computer, and the test result is stored in a gathering manner.
Description
Technical Field
The present disclosure relates to the field of distribution automation technologies, and in particular, to a system and a method for testing remote availability of distribution automation.
Background
With the continuous expansion of the application range and the application scale of the distribution automation technology, whether the distribution automation terminal can work efficiently is one of the important factors for determining whether the power grid in the whole area can supply power safely and efficiently. In order to ensure that the distribution automation terminal can be normally matched with a power distribution network to realize comprehensive monitoring and control functions, comprehensive and strict delivery and network access tests need to be performed on the distribution automation terminal before the distribution automation terminal is put into use formally. In the test process, the equipment safety and control signals in the power grid can completely complete the test result, which is very important for the test of power distribution automation, at present, when the test of the power distribution automation terminal is carried out, a field one-to-one independent test is generally adopted, the field manual test can not meet the requirements of large-scale power distribution automation equipment, the remote centralized test of the power distribution equipment is carried out along with the development of communication technology and the development of control equipment, which is a future development trend, then, how to accurately carry out the remote test ensures that the control command of the remote test can be accurately received in the large-scale test and executed according to the expected test command, and meanwhile, the test result is accurately verified, which is a difficult problem needing to be researched in the future remote test.
Disclosure of Invention
The invention discloses a distribution automation remote availability test system, which comprises a main test cabinet and a field control cabinet group, wherein the field control cabinet group is used for connecting a distribution automation terminal to be tested; the field control cabinet group comprises a wiring cabinet, a communication cabinet and a sampling cabinet;
the wiring cabinet comprises a switch array used for connecting a distribution automation terminal to be tested, and the communication cabinet comprises an instruction communicator and a test feedback communicator; the main test cabinet comprises an industrial control host and a relay protection tester connected with the industrial control host;
the switch array is connected with the relay protection tester and the distribution automation terminal to be tested;
the industrial control host sends an encrypted test control signal to the communication cabinet, and the command communicator in the communication cabinet decrypts the control signal into an addressing control signal and transmits the addressing control signal to the switch array; the switch array adjusts the switch state of the switch array according to the received addressing control signal, so that the distribution automation terminal to be tested corresponding to the addressing control signal is connected with the relay protection tester;
the relay protection tester transmits a test signal to the target power distribution automation terminal based on the output control signal; after transmission signal is received at the target distribution automation terminal, the test feedback communicator sends a set of feedback control instruction and gives the target distribution automation terminal with the sampling cabinet, the sampling cabinet receives after the feedback control instruction, the sampling the output of the corresponding circuit of target distribution automation terminal, the sampling cabinet feeds back to the signal processing back to the test feedback communicator, the test feedback communicator transmits the received feedback to the industrial control host computer, and the data analysis processing is carried out to the industrial control host computer, and the test result is stored in a gathering manner.
The field control cabinet group comprises a plurality of field control cabinet groups; the industrial control host selects a target power distribution automation terminal to be tested, encrypts and processes address information, model information and time information of the target power distribution automation terminal according to the selected address information, model information and time information of the target power distribution automation terminal to generate a test control signal, and sends the test control signal to different field control cabinet groups respectively, the test control signal comprises a test number and an addressing control signal, an instruction communicator in a communication cabinet of the field control cabinet group receives the test control signal, decomposes the test number and the test signal, decrypts the test signal into the addressing control signal and sends the addressing control signal to a switch array in a wiring cabinet, the test number is sent to a test feedback communicator, and the switch array configures the switch state of the switch array according to the addressing control signal.
The distribution automation remote availability test system comprises a distribution automation terminal to be tested, a sampling interface and a power supply interface, wherein the distribution automation terminal to be tested comprises the test interface, the sampling interface and the power supply interface; the test interface is connected with the switch array and receives test signals, the sampling interface is used for connecting the sampling cabinet, and the power supply interface is used for connecting a stable power supply.
Distribution automation remote usability test system, the sampling cabinet includes sampling circuit and sampling control circuit, the sampling circuit is including sampling coordination circuit, sampling distribution circuit, sampling output circuit still exports the sampling feedback to the sampling coordination circuit, sampling control circuit output sampling control signal gives the sampling coordination circuit to control sampling coordination circuit's coordination sampling.
The distribution automation remote availability test system, the sampling coordination circuit includes: a switch tube M1-M19, a controllable end of a switch tube M1 is connected with a controllable end of a switch tube M6 and is connected with an external CLK signal, the controllable end of the switch tube M2 is connected with a controllable end of a switch tube M7, a non-controllable end of the switch tube M1 and a non-controllable end of the switch tube M2 are connected with a power supply VDD, the other non-controllable ends of the switch tube M1 and the switch tube M2 are connected with each other and then are connected with a non-controllable end of the switch tube M3, a controllable end of the switch tube M3 is connected with a controllable end of the switch tube M9, the other non-controllable end of the switch tube M3 is connected with a non-controllable end of the switch tube M4 and a non-controllable end of the switch tube M5, the other non-controllable ends of the switch tube M4 and the switch tube M5 are connected with a non-controllable end of the switch tube M6, the other non-controllable end of the switch tube M6 is connected with a non-controllable end of the switch tube M7, and the other non-controllable end of the switch tube M7 is grounded; one non-controllable end of the switch tube M8 is connected with a power supply VDD, the controllable end is connected with the controllable end of the switch tube M10, the other non-controllable end of the switch tube M8 is connected with one non-controllable end of the switch tube M9, the other non-controllable end of the switch tube M9 is connected with one non-controllable end of the switch tube M10, and the other non-controllable end of the switch tube M10 is grounded; one non-controllable end of the switch tube M11 is connected with a power supply VDD, the controllable end UAN is connected with the controllable ends of the switch tube M17 and the switch tube M18, and the other non-controllable end of the switch tube M11 is respectively connected with one non-controllable end of the switch tube M12 and one non-controllable end of the switch tube M13; the other non-controllable end of the switch tube M12 is connected with one non-controllable end of the switch tube M14, the other non-controllable end of the switch tube M13 is connected with one non-controllable end of the switch tube M15, the controllable end of the switch tube M14 is connected with the controllable end of the switch tube M15, the other non-controllable end of the switch tube M14 is respectively connected with one non-controllable end of the switch tube M16, one non-controllable end of the switch tube M17, the controllable end of the switch tube M19 and the controllable end of the switch tube M4, the other non-controllable end of the switch tube M15 is respectively connected with the controllable end of the switch tube M5, one non-controllable end of the switch tube M18, one non-controllable end of the switch tube M84 and the controllable end of the switch tube M16, the controllable ends of the switch tubes M17 and 18 are connected, and the other non-controllable ends of the switch tubes M16, M18 and M57324 are grounded.
The distribution automation remote availability test system, the sampling distribution circuit includes: the switch S1-S4, the switch tube M20-M21 and the capacitor C1, the switch S1-S4 and the switch tube M20-M21 receive the control of the sampling control circuit to carry out on-off control; the switch tube M20, the capacitor C1 and the switch tube M21 are sequentially connected in series, one end of each of the switch S1 and the switch S2 is connected with the sampling input INp, the other end of the switch S1 is connected with one end of the capacitor C1, the other end of the switch S2 is connected with the other end of the capacitor C1, one end of each of the switch S3 and the switch S4 is connected with the sampling input INn, the other end of the switch S3 is connected with one end of the capacitor C1, and the other end of the switch S4 is connected with the other end of the capacitor C1.
The distribution automation remote availability test system, the sampling output circuit includes: the circuit comprises switching tubes M22-M36, variable capacitors C2-C3, an exclusive-OR gate U1 and an inverter U2; one non-controllable end of the switch tube M22 is connected to the power supply VDD, the other non-controllable end is connected to one non-controllable end of the switch tube M23, and the other non-controllable end of the switch tube M23 is grounded; the controllable end of the switch tube M22 and the controllable end of the switch tube M23 are connected and then connected with the other end of the variable capacitor C2, one end of the variable capacitor is connected with a power supply VDD, and the controllable end of the switch tube M23 is also connected with a controllable end of the switch tube M29 and a non-controllable end of the switch tube M27; one non-controllable end of the switch tube M24 is connected with a power supply VDD, the other non-controllable end is respectively connected with one non-controllable end of the switch tube M25 and one non-controllable end of the switch tube M30, and the controllable end of the switch tube M24 is respectively connected with the controllable end of the switch tube M28, the controllable end of the switch tube M29 and the output end of the inverter U2; the controllable end of the switch tube M25 is connected with the sampling input INp, and the other non-controllable end is respectively connected with a non-controllable end of the switch tube M26 and a non-controllable end of the switch tube M28; the controllable end of the switch tube M26 is respectively connected with the controllable end of the switch tube M27 and a non-controllable end of the switch tube M32, the other non-controllable end of the switch tube M26 is respectively connected with a non-controllable end of the switch tube M27, the controllable end of the switch tube M31 and the controllable end of the switch tube M32, and the other non-controllable end of the switch tube M27 is grounded; the controllable end of the switch tube M30 is connected with the sampling input Inn, the other non-controllable end is respectively connected with a non-controllable end of the switch tube M31 and a non-controllable end of the switch tube M36, and the other non-controllable end of the switch tube M31 is respectively connected with a non-controllable end of the switch tube M32, a controllable end of the switch tube M35 and a non-controllable end of the switch tube M33; the other non-controllable end of the switch tube M32 is grounded; one end of the variable capacitor C3 is connected with a power supply, the other end of the variable capacitor C3 is respectively connected with the controllable ends of the switch tube M34 and the switch tube M35, one non-controllable end of the switch tube M34 is connected with a power supply VDD, the other non-controllable end of the switch tube M34 is respectively connected with one non-controllable end of the electric switch tube M35 and one input end of the exclusive-OR gate U1, and the other non-controllable end of the switch tube M35 is grounded; a non-controllable end of the switch tube M23 is connected with the other input end of the XOR gate U1, a controllable end of the switch tube M12 is connected with the other input end of the XOR gate U1, a controllable end of the switch tube M13 is connected with an input end of the XOR gate U1, and an output end of the XOR gate U1 is connected with a controllable end of the switch tube M3; the controllable end of the switch tube M10 is connected with the input end of the inverter U2.
The testing method of the distribution automation remote availability testing system according to any one of the preceding claims, comprising the steps of:
(1) the industrial control host selects a target power distribution automatic terminal to be tested, carries out encryption processing according to address information, model information and time information of the selected target power distribution automatic terminal, generates test control signals, and respectively sends the test control signals to different field control cabinet groups, wherein the test control signals comprise test numbers and addressing control signals;
(2) an instruction communicator in a communication cabinet of the field control cabinet group receives the test control signal of the industrial control host, decomposes the test serial number and the test signal, decrypts the test signal into an addressing control signal, sends the addressing control signal to the switch array in the wiring cabinet, sends the test serial number to the test feedback communicator, and configures the switch state of the switch array according to the addressing control signal;
(3) according to on-off state will the relay protection tester is connected to distribution automation terminal awaits measuring, the test process carries out the back, test feedback communicator sends a set of feedback control instruction and gives target distribution automation terminal with the sampling cabinet, the sampling cabinet is received behind the feedback control instruction, the sampling the output of target distribution automation terminal corresponding circuit, the sampling cabinet feeds back to signal processing back the test feedback communicator, the test feedback communicator transmits the feedback of receiving to the industrial control host computer carries out data analysis and processing to storage test result gathers.
The invention has the beneficial effects that: the invention relates to a distribution automation remote usability test system and a method, because remote test is needed, the orderliness and stability of data transmission need to be ensured, data transmission is encrypted and sequenced, meanwhile, the stable power supply of an automation terminal of the remote test is ensured to ensure the uninterrupted data transmission, the regular power supply and stability test is realized aiming at a plurality of automation terminals, the stable operation of the whole remote test system is realized, the stable sampling feedback is carried out on the tested distribution automation terminal, and the accurate judgment of the remote test result is improved. The main improvement of the invention is that a sampling cabinet and a communication cabinet are arranged, encrypted communication data transmission is carried out through the communication cabinet, and feedback communication is carried out, wherein the communication cabinet comprises an instruction communicator and a test feedback communicator; the other main improvement of the invention is that a sampling cabinet is arranged, sampled data is fed back to the test feedback communicator through a sampling circuit in the sampling cabinet, and test numbers received by the test feedback communicator are combined and then fed back to the industrial control host to store test results; the other main improvement of the invention is that a sampling circuit is arranged, and accurate data can be acquired through a sampling coordination circuit, a sampling distribution circuit and a sampling output circuit to perform data feedback so as to improve the test effect.
Drawings
Fig. 1 is a schematic diagram of a distribution automation remote availability test system according to the present invention.
Fig. 2 is a circuit diagram of the sampling cabinet of the present invention.
Fig. 3 is a schematic diagram of a testing method of a distribution automation remote availability testing system according to the present invention.
Detailed Description
The present application will now be described in further detail with reference to the drawings, it should be noted that the following detailed description is given for illustrative purposes only and is not to be construed as limiting the scope of the present application, as those skilled in the art will be able to make numerous insubstantial modifications and adaptations to the present application based on the above disclosure.
As shown in fig. 1, a schematic diagram of a distribution automation remote availability test system disclosed in the present invention includes a main test cabinet and a field control cabinet group for connecting a distribution automation terminal to be tested; the field control cabinet group comprises a wiring cabinet, a communication cabinet and a sampling cabinet; the distribution automation Terminal comprises a distribution automation Feeder Terminal (FTU);
the wiring cabinet comprises a switch array used for connecting a distribution automation terminal to be tested, and the communication cabinet comprises an instruction communicator and a test feedback communicator; the main test cabinet comprises an industrial control host and a relay protection tester connected with the industrial control host;
the switch array is connected with the relay protection tester and the distribution automation terminal to be tested;
the industrial control host sends an encrypted test control signal to the communication cabinet, and the command communicator in the communication cabinet decrypts the control signal into an addressing control signal and transmits the addressing control signal to the switch array; the switch array adjusts the switch state of the switch array according to the received addressing control signal, so that the distribution automation terminal to be tested corresponding to the addressing control signal is connected with the relay protection tester;
the relay protection tester transmits a test signal to the target power distribution automation terminal based on the output control signal; after transmission signal is received at the target distribution automation terminal, the test feedback communicator sends a set of feedback control instruction and gives the target distribution automation terminal with the sampling cabinet, the sampling cabinet receives after the feedback control instruction, the sampling the output of the corresponding circuit of target distribution automation terminal, the sampling cabinet feeds back to the signal processing back to the test feedback communicator, the test feedback communicator transmits the received feedback to the industrial control host computer, and the data analysis processing is carried out to the industrial control host computer, and the test result is stored in a gathering manner.
The field control cabinet group comprises a plurality of field control cabinet groups; the industrial control host selects a target power distribution automation terminal to be tested, encrypts and processes address information, model information and time information of the target power distribution automation terminal according to the selected address information, model information and time information of the target power distribution automation terminal to generate a test control signal, and sends the test control signal to different field control cabinet groups respectively, the test control signal comprises a test number and an addressing control signal, an instruction communicator in a communication cabinet of the field control cabinet group receives the test control signal, decomposes the test number and the test signal, decrypts the test signal into the addressing control signal and sends the addressing control signal to a switch array in a wiring cabinet, the test number is sent to a test feedback communicator, and the switch array configures the switch state of the switch array according to the addressing control signal.
The distribution automation remote availability test system comprises a distribution automation terminal to be tested, a sampling interface and a power supply interface, wherein the distribution automation terminal to be tested comprises the test interface, the sampling interface and the power supply interface; the test interface is connected with the switch array and receives test signals, the sampling interface is used for connecting the sampling cabinet, and the power supply interface is used for connecting a stable power supply.
Fig. 2 is a circuit diagram of the sampling cabinet of the present invention. Distribution automation remote usability test system, the sampling cabinet includes sampling circuit and sampling control circuit, the sampling circuit is including sampling coordination circuit, sampling distribution circuit, sampling output circuit still exports the sampling feedback to the sampling coordination circuit, sampling control circuit output sampling control signal gives the sampling coordination circuit to control sampling coordination circuit's coordination sampling.
The distribution automation remote availability test system, the sampling coordination circuit includes: a switch tube M1-M19, a controllable end of a switch tube M1 is connected with a controllable end of a switch tube M6 and is connected with an external CLK signal, the controllable end of the switch tube M2 is connected with a controllable end of a switch tube M7, a non-controllable end of the switch tube M1 and a non-controllable end of the switch tube M2 are connected with a power supply VDD, the other non-controllable ends of the switch tube M1 and the switch tube M2 are connected with each other and then are connected with a non-controllable end of the switch tube M3, a controllable end of the switch tube M3 is connected with a controllable end of the switch tube M9, the other non-controllable end of the switch tube M3 is connected with a non-controllable end of the switch tube M4 and a non-controllable end of the switch tube M5, the other non-controllable ends of the switch tube M4 and the switch tube M5 are connected with a non-controllable end of the switch tube M6, the other non-controllable end of the switch tube M6 is connected with a non-controllable end of the switch tube M7, and the other non-controllable end of the switch tube M7 is grounded; one non-controllable end of the switch tube M8 is connected with a power supply VDD, the controllable end is connected with the controllable end of the switch tube M10, the other non-controllable end of the switch tube M8 is connected with one non-controllable end of the switch tube M9, the other non-controllable end of the switch tube M9 is connected with one non-controllable end of the switch tube M10, and the other non-controllable end of the switch tube M10 is grounded; one non-controllable end of the switch tube M11 is connected with a power supply VDD, the controllable end UAN is connected with the controllable ends of the switch tube M17 and the switch tube M18, and the other non-controllable end of the switch tube M11 is respectively connected with one non-controllable end of the switch tube M12 and one non-controllable end of the switch tube M13; the other non-controllable end of the switch tube M12 is connected with one non-controllable end of the switch tube M14, the other non-controllable end of the switch tube M13 is connected with one non-controllable end of the switch tube M15, the controllable end of the switch tube M14 is connected with the controllable end of the switch tube M15, the other non-controllable end of the switch tube M14 is respectively connected with one non-controllable end of the switch tube M16, one non-controllable end of the switch tube M17, the controllable end of the switch tube M19 and the controllable end of the switch tube M4, the other non-controllable end of the switch tube M15 is respectively connected with the controllable end of the switch tube M5, one non-controllable end of the switch tube M18, one non-controllable end of the switch tube M84 and the controllable end of the switch tube M16, the controllable ends of the switch tubes M17 and 18 are connected, and the other non-controllable ends of the switch tubes M16, M18 and M57324 are grounded.
The distribution automation remote availability test system, the sampling distribution circuit includes: the switch S1-S4, the switch tube M20-M21 and the capacitor C1, the switch S1-S4 and the switch tube M20-M21 receive the control of the sampling control circuit to carry out on-off control; the switch tube M20, the capacitor C1 and the switch tube M21 are sequentially connected in series, one end of each of the switch S1 and the switch S2 is connected with the sampling input INp, the other end of the switch S1 is connected with one end of the capacitor C1, the other end of the switch S2 is connected with the other end of the capacitor C1, one end of each of the switch S3 and the switch S4 is connected with the sampling input INn, the other end of the switch S3 is connected with one end of the capacitor C1, and the other end of the switch S4 is connected with the other end of the capacitor C1.
The distribution automation remote availability test system, the sampling output circuit includes: the circuit comprises switching tubes M22-M36, variable capacitors C2-C3, an exclusive-OR gate U1 and an inverter U2; one non-controllable end of the switch tube M22 is connected to the power supply VDD, the other non-controllable end is connected to one non-controllable end of the switch tube M23, and the other non-controllable end of the switch tube M23 is grounded; the controllable end of the switch tube M22 and the controllable end of the switch tube M23 are connected and then connected with the other end of the variable capacitor C2, one end of the variable capacitor is connected with a power supply VDD, and the controllable end of the switch tube M23 is also connected with a controllable end of the switch tube M29 and a non-controllable end of the switch tube M27; one non-controllable end of the switch tube M24 is connected with a power supply VDD, the other non-controllable end is respectively connected with one non-controllable end of the switch tube M25 and one non-controllable end of the switch tube M30, and the controllable end of the switch tube M24 is respectively connected with the controllable end of the switch tube M28, the controllable end of the switch tube M29 and the output end of the inverter U2; the controllable end of the switch tube M25 is connected with the sampling input INp, and the other non-controllable end is respectively connected with a non-controllable end of the switch tube M26 and a non-controllable end of the switch tube M28; the controllable end of the switch tube M26 is respectively connected with the controllable end of the switch tube M27 and a non-controllable end of the switch tube M32, the other non-controllable end of the switch tube M26 is respectively connected with a non-controllable end of the switch tube M27, the controllable end of the switch tube M31 and the controllable end of the switch tube M32, and the other non-controllable end of the switch tube M27 is grounded; the controllable end of the switch tube M30 is connected with the sampling input Inn, the other non-controllable end is respectively connected with a non-controllable end of the switch tube M31 and a non-controllable end of the switch tube M36, and the other non-controllable end of the switch tube M31 is respectively connected with a non-controllable end of the switch tube M32, a controllable end of the switch tube M35 and a non-controllable end of the switch tube M33; the other non-controllable end of the switch tube M32 is grounded; one end of the variable capacitor C3 is connected with a power supply, the other end of the variable capacitor C3 is respectively connected with the controllable ends of the switch tube M34 and the switch tube M35, one non-controllable end of the switch tube M34 is connected with a power supply VDD, the other non-controllable end of the switch tube M34 is respectively connected with one non-controllable end of the electric switch tube M35 and one input end of the exclusive-OR gate U1, and the other non-controllable end of the switch tube M35 is grounded; a non-controllable end of the switch tube M23 is connected with the other input end of the XOR gate U1, a controllable end of the switch tube M12 is connected with the other input end of the XOR gate U1, a controllable end of the switch tube M13 is connected with an input end of the XOR gate U1, and an output end of the XOR gate U1 is connected with a controllable end of the switch tube M3; the controllable end of the switch tube M10 is connected with the input end of the inverter U2.
Fig. 3 is a schematic diagram of a testing method of the distribution automation remote availability testing system according to any one of the above embodiments of the present invention, including the following steps:
(1) the industrial control host selects a target power distribution automatic terminal to be tested, carries out encryption processing according to address information, model information and time information of the selected target power distribution automatic terminal, generates test control signals, and respectively sends the test control signals to different field control cabinet groups, wherein the test control signals comprise test numbers and addressing control signals;
(2) an instruction communicator in a communication cabinet of the field control cabinet group receives the test control signal of the industrial control host, decomposes the test serial number and the test signal, decrypts the test signal into an addressing control signal, sends the addressing control signal to the switch array in the wiring cabinet, sends the test serial number to the test feedback communicator, and configures the switch state of the switch array according to the addressing control signal;
(3) according to on-off state will the relay protection tester is connected to distribution automation terminal awaits measuring, the test process carries out the back, test feedback communicator sends a set of feedback control instruction and gives target distribution automation terminal with the sampling cabinet, the sampling cabinet is received behind the feedback control instruction, the sampling the output of target distribution automation terminal corresponding circuit, the sampling cabinet feeds back to signal processing back the test feedback communicator, the test feedback communicator transmits the feedback of receiving to the industrial control host computer carries out data analysis and processing to storage test result gathers.
The invention has the beneficial effects that: the invention relates to a distribution automation remote usability test system and a method, because remote test is needed, the orderliness and stability of data transmission need to be ensured, data transmission is encrypted and sequenced, meanwhile, the stable power supply of an automation terminal of the remote test is ensured to ensure the uninterrupted data transmission, the regular power supply and stability test is realized aiming at a plurality of automation terminals, the stable operation of the whole remote test system is realized, the stable sampling feedback is carried out on the tested distribution automation terminal, and the accurate judgment of the remote test result is improved. The main improvement of the invention is that a sampling cabinet and a communication cabinet are arranged, encrypted communication data transmission is carried out through the communication cabinet, and feedback communication is carried out, wherein the communication cabinet comprises an instruction communicator and a test feedback communicator; the other main improvement of the invention is that a sampling cabinet is arranged, sampled data is fed back to the test feedback communicator through a sampling circuit in the sampling cabinet, and test numbers received by the test feedback communicator are combined and then fed back to the industrial control host to store test results; the other main improvement of the invention is that a sampling circuit is arranged, and accurate data can be acquired through a sampling coordination circuit, a sampling distribution circuit and a sampling output circuit to perform data feedback so as to improve the test effect.
Claims (5)
1. A distribution automation remote availability test system is characterized by comprising a main test cabinet and a field control cabinet group used for connecting a distribution automation terminal to be tested; the field control cabinet group comprises a wiring cabinet, a communication cabinet and a sampling cabinet;
the wiring cabinet comprises a switch array used for connecting a distribution automation terminal to be tested, and the communication cabinet comprises an instruction communicator and a test feedback communicator; the main test cabinet comprises an industrial control host and a relay protection tester connected with the industrial control host;
the switch array is connected with the relay protection tester and the distribution automation terminal to be tested;
the industrial control host sends an encrypted test control signal to the communication cabinet, and the command communicator in the communication cabinet decrypts the control signal into an addressing control signal and transmits the addressing control signal to the switch array; the switch array adjusts the switch state of the switch array according to the received addressing control signal, so that the distribution automation terminal to be tested corresponding to the addressing control signal is connected with the relay protection tester;
the relay protection tester transmits a test signal to a target power distribution automation terminal based on the test control signal; after the target power distribution automation terminal receives a transmission signal, the test feedback communicator sends a group of feedback control instructions to the target power distribution automation terminal and the sampling cabinet, the sampling cabinet samples the output of a corresponding line of the target power distribution automation terminal after receiving the feedback control instructions, the sampling cabinet processes the signal and feeds the signal back to the test feedback communicator, and the test feedback communicator transmits the received feedback to the industrial control host for data analysis and processing, and collects and stores a test result; the distribution automation terminal to be tested comprises a test interface, a sampling interface and a power supply interface; the test interface is connected with the switch array and used for receiving test signals, the sampling interface is used for connecting the sampling cabinet, and the power supply interface is used for connecting a stable power supply; the sampling cabinet comprises a sampling circuit and a sampling control circuit, the sampling circuit comprises a sampling coordination circuit, a sampling distribution circuit and a sampling output circuit, the sampling coordination circuit, the sampling distribution circuit and the sampling output circuit output sampling feedback to the sampling coordination circuit, and the sampling control circuit outputs a sampling control signal to the sampling coordination circuit so as to control the coordinated sampling of the sampling coordination circuit; the sampling coordination circuit includes: a switch tube M1-M19, a controllable end of a switch tube M1 is connected with a controllable end of a switch tube M6 and is connected with an external CLK signal, the controllable end of the switch tube M2 is connected with a controllable end of a switch tube M7, a non-controllable end of the switch tube M1 and a non-controllable end of the switch tube M2 are connected with a power supply VDD, the other non-controllable ends of the switch tube M1 and the switch tube M2 are connected with each other and then are connected with a non-controllable end of the switch tube M3, a controllable end of the switch tube M3 is connected with a controllable end of the switch tube M9, the other non-controllable end of the switch tube M3 is connected with a non-controllable end of the switch tube M4 and a non-controllable end of the switch tube M5, the other non-controllable ends of the switch tube M4 and the switch tube M5 are connected with a non-controllable end of the switch tube M6, the other non-controllable end of the switch tube M6 is connected with a non-controllable end of the switch tube M7, and the other non-controllable end of the switch tube M7 is grounded; one non-controllable end of the switch tube M8 is connected with a power supply VDD, the controllable end is connected with the controllable end of the switch tube M10, the other non-controllable end of the switch tube M8 is connected with one non-controllable end of the switch tube M9, the other non-controllable end of the switch tube M9 is connected with one non-controllable end of the switch tube M10, and the other non-controllable end of the switch tube M10 is grounded; one non-controllable end of the switch tube M11 is connected with a power supply VDD, the controllable end UAN is connected with the controllable ends of the switch tube M17 and the switch tube M18, and the other non-controllable end of the switch tube M11 is respectively connected with one non-controllable end of the switch tube M12 and one non-controllable end of the switch tube M13; the other non-controllable end of the switch tube M12 is connected with one non-controllable end of the switch tube M14, the other non-controllable end of the switch tube M13 is connected with one non-controllable end of the switch tube M15, the controllable end of the switch tube M14 is connected with the controllable end of the switch tube M15, the other non-controllable end of the switch tube M14 is respectively connected with one non-controllable end of the switch tube M16, one non-controllable end of the switch tube M17, the controllable end of the switch tube M19 and the controllable end of the switch tube M4, the other non-controllable end of the switch tube M15 is respectively connected with the controllable end of the switch tube M5, one non-controllable end of the switch tube M18, one non-controllable end of the switch tube M84 and the controllable end of the switch tube M16, the controllable ends of the switch tubes M17 and 18 are connected, and the other non-controllable ends of the switch tubes M16, M18 and M57324 are grounded.
2. The distribution automation remote availability test system of claim 1, the field control cabinet group comprising a plurality; the industrial control host selects a target power distribution automation terminal to be tested, encrypts and processes the selected target power distribution automation terminal according to address information, model information and time information of the selected target power distribution automation terminal to generate a test control signal, and sends the test control signal to different field control cabinet groups respectively, wherein the test control signal comprises a test number and an addressing control signal, an instruction communicator in a communication cabinet of the field control cabinet group receives the test control signal, decomposes the test number and the test signal, decrypts the test signal into the addressing control signal and sends the addressing control signal to a switch array in a wiring cabinet, the test number is sent to a test feedback communicator, and the switch array configures the switch state of the switch array according to the addressing control signal.
3. The distribution automation remote availability test system of claim 1, the sampling distribution circuit comprising: the switch S1-S4, the switch tube M20-M21 and the capacitor C1, the switch S1-S4 and the switch tube M20-M21 receive the control of the sampling control circuit to carry out on-off control; the switch tube M20, the capacitor C1 and the switch tube M21 are sequentially connected in series, one end of each of the switch S1 and the switch S2 is connected with the sampling input INp, the other end of the switch S1 is connected with one end of the capacitor C1, the other end of the switch S2 is connected with the other end of the capacitor C1, one end of each of the switch S3 and the switch S4 is connected with the sampling input INn, the other end of the switch S3 is connected with one end of the capacitor C1, and the other end of the switch S4 is connected with the other end of the capacitor C1.
4. The distribution automation remote availability test system of claim 3, the sampling output circuit comprising: the circuit comprises switching tubes M22-M36, variable capacitors C2-C3, an exclusive-OR gate U1 and an inverter U2; one non-controllable end of the switch tube M22 is connected to the power supply VDD, the other non-controllable end is connected to one non-controllable end of the switch tube M23, and the other non-controllable end of the switch tube M23 is grounded; the controllable end of the switch tube M22 and the controllable end of the switch tube M23 are connected and then connected with the other end of the variable capacitor C2, one end of the variable capacitor is connected with a power supply VDD, and the controllable end of the switch tube M23 is also connected with a controllable end of the switch tube M29 and a non-controllable end of the switch tube M27; one non-controllable end of the switch tube M24 is connected with a power supply VDD, the other non-controllable end is respectively connected with one non-controllable end of the switch tube M25 and one non-controllable end of the switch tube M30, and the controllable end of the switch tube M24 is respectively connected with the controllable end of the switch tube M28, the controllable end of the switch tube M29 and the output end of the inverter U2; the controllable end of the switch tube M25 is connected with the sampling input INp, and the other non-controllable end is respectively connected with a non-controllable end of the switch tube M26 and a non-controllable end of the switch tube M28; the controllable end of the switch tube M26 is respectively connected with the controllable end of the switch tube M27 and a non-controllable end of the switch tube M32, the other non-controllable end of the switch tube M26 is respectively connected with a non-controllable end of the switch tube M27, the controllable end of the switch tube M31 and the controllable end of the switch tube M32, and the other non-controllable end of the switch tube M27 is grounded; the controllable end of the switch tube M30 is connected with the sampling input Inn, the other non-controllable end is respectively connected with a non-controllable end of the switch tube M31 and a non-controllable end of the switch tube M36, and the other non-controllable end of the switch tube M31 is respectively connected with a non-controllable end of the switch tube M32, a controllable end of the switch tube M35 and a non-controllable end of the switch tube M33; the other non-controllable end of the switch tube M32 is grounded; one end of the variable capacitor C3 is connected with a power supply, the other end of the variable capacitor C3 is respectively connected with the controllable ends of the switch tube M34 and the switch tube M35, one non-controllable end of the switch tube M34 is connected with a power supply VDD, the other non-controllable end of the switch tube M34 is respectively connected with one non-controllable end of the electric switch tube M35 and one input end of the exclusive-OR gate U1, and the other non-controllable end of the switch tube M35 is grounded; a non-controllable end of the switch tube M23 is connected with the other input end of the XOR gate U1, a controllable end of the switch tube M12 is connected with the other input end of the XOR gate U1, a controllable end of the switch tube M13 is connected with an input end of the XOR gate U1, and an output end of the XOR gate U1 is connected with a controllable end of the switch tube M3; the controllable end of the switch tube M10 is connected with the input end of the inverter U2.
5. The method for testing a distribution automation remote availability test system according to any of claims 1-4, characterised in that it comprises the following steps:
(1) the industrial control host selects a target power distribution automatic terminal to be tested, carries out encryption processing according to address information, model information and time information of the selected target power distribution automatic terminal, generates test control signals, and respectively sends the test control signals to different field control cabinet groups, wherein the test control signals comprise test numbers and addressing control signals;
(2) an instruction communicator in a communication cabinet of the field control cabinet group receives the test control signal of the industrial control host, decomposes the test serial number and the test signal, decrypts the test signal into an addressing control signal, sends the addressing control signal to the switch array in the wiring cabinet, sends the test serial number to the test feedback communicator, and configures the switch state of the switch array according to the addressing control signal;
(3) according to on-off state will the relay protection tester is connected to distribution automation terminal awaits measuring, the test process carries out the back, test feedback communicator sends a set of feedback control instruction and gives target distribution automation terminal with the sampling cabinet, the sampling cabinet is received behind the feedback control instruction, the sampling the output of target distribution automation terminal corresponding circuit, the sampling cabinet feeds back to signal processing back the test feedback communicator, the test feedback communicator transmits the feedback of receiving to the industrial control host computer carries out data analysis and processing to storage test result gathers.
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