Automatic detection system of relay protection tester

Abstract

The invention discloses an automatic detection system for a relay protection tester, and relates to the field of relay protection testers, the automatic detection system comprises an automatic detection device, a PC, a switch and an electronic load, the PC is used as a main control end, the PC is connected with the switch through an optical fiber, a report generation module is arranged in the PC, and the electronic load is connected with the switch through an optical fiber. The PC is connected with the automatic detection device through an optical fiber, the switch is connected with the electronic load through an optical fiber, and the automatic detection device is connected with the switch through an optical fiber. According to the invention, the voltage channel conversion module and the current channel conversion module are arranged in the electronic load, so that current or voltage output by the relay protection tester can be discriminated and guided, and a voltage output port and a current output port on the relay protection tester can be connected with the electronic load at the same time; therefore, the problem of continuous connection switching is reduced, and automatic detection is realized.

Description

Technical Field

[0001] The invention relates to the field of relay protection testers, and in particular to an automatic detection system for relay protection testers. Background Art

[0002] Relay protection device is one of the important secondary equipment of power system, which provides reliable guarantee for the safe operation of power system. Relay protection tester is an important tool for testing the characteristics of relay protection device. Its equipment status and working performance have also become important factors affecting the safety of power system. Testing of relay protection tester has become the key to solve this problem. Relevant testing institutions at home and abroad have been carrying out testing, calibration and verification of relay protection tester.

[0003] At present, when testing the relay protection tester, there are the following problems:

[0004] 1. When the voltage or current of the relay protection tester needs to be tested, it is necessary to manually switch the connection with the voltage or current output port on the relay protection tester, which is inconvenient;

[0005] 2. After each test, since the generated reports are independent, it is necessary to manually switch and compare past data, which is prone to errors.

[0006] Therefore, it is necessary to invent an automatic detection system for a relay protection tester to solve the above problems. Summary of the invention

[0007] The object of the present invention is to provide an automatic detection system for a relay protection tester to solve the problems raised in the above background technology.

[0008] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an automatic detection system for a relay protection tester, comprising an automatic detection device, a PC, a switch and an electronic load, wherein the PC serves as a main control end, the PC and the switch are connected via an optical fiber, a report generation module is arranged in the PC, the PC and the automatic detection device are connected via an optical fiber, the switch and the electronic load are connected via an optical fiber, and the automatic detection device and the switch are connected via an optical fiber.

[0009] Preferably, a voltage channel conversion module and a current channel conversion module are provided in the electronic load, and the voltage channel conversion module and the current channel conversion module are connected to the AC / DC voltage port and the AC / DC current port of the relay protection tester.

[0010] Preferably, the automatic detection device includes a voltage acquisition module, a current acquisition module, a voltage transmission module, a current transmission module, a voltage A / D module, a current A / D module, a high-speed computing module, a programming control circuit and a high-speed recording module. The voltage acquisition module is connected to the port of the voltage channel conversion module through an optical fiber, the current acquisition module is connected to the port of the current channel conversion module through an optical fiber, the voltage acquisition module is electrically connected to the voltage transmission module, the current acquisition module is electrically connected to the current transmission module, the voltage transmission module is electrically connected to the voltage A / D module, the current transmission module is electrically connected to the current A / D module, the voltage A / D module and the current A / D module are connected to the high-speed computing module, and the high-speed computing module is connected to the switch through an optical fiber.

[0011] Preferably, the automatic detection device is further provided with a data storage / comparison module, the data storage / comparison module is connected to the high-speed computing module via an optical fiber, and the data storage / comparison module is connected to the PC via an optical fiber.

[0012] Preferably, a voltage operational amplifier and a current operational amplifier are respectively provided in the voltage transmission module and the current transmission module.

[0013] Preferably, the voltage A / D module and the current A / D module use 16-bit high-speed A / D.

[0014] Technical effects and advantages of the present invention:

[0015] 1. By setting up a voltage channel conversion module and a current channel conversion module in the electronic load, the current or voltage output by the relay protection tester can be identified and guided, and the voltage output port and the current output port on the relay protection tester can be connected to the electronic load at the same time, thereby reducing the problem of constantly switching connections and realizing automatic detection.

[0016] 2. By setting up a data storage / comparison module in the automatic detection device, two or more groups of past data can be put together for comparison, and multiple groups of data comparison reports can be generated, effectively reducing the occurrence of errors and improving comparison accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the system principle of the present invention. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] The present invention provides Figure 1 The relay protection tester automatic detection system shown includes an automatic detection device, a PC, a switch and an electronic load. The PC serves as the main control end. The PC and the switch are connected via optical fiber. A report generation module is provided in the PC. The PC and the automatic detection device are connected via optical fiber. The switch and the electronic load are connected via optical fiber. The automatic detection device and the switch are connected via optical fiber.

[0020] A voltage channel conversion module and a current channel conversion module are provided in the electronic load, and the voltage channel conversion module and the current channel conversion module are connected to the AC / DC voltage port and the AC / DC current port of the relay protection tester. By providing the voltage channel conversion module and the current channel conversion module in the electronic load, the current or voltage output by the relay protection tester can be identified and guided, and the voltage output port and the current output port on the relay protection tester can be connected to the electronic load at the same time, thereby reducing the problem of constantly switching connections and realizing automatic detection.

[0021] The automatic detection device includes a voltage acquisition module, a current acquisition module, a voltage transmission module, a current transmission module, a voltage A / D module, a current A / D module, a high-speed operation module, a programming control circuit and a high-speed wave recording module. The voltage acquisition module is connected to the port of the voltage channel conversion module through an optical fiber, the current acquisition module is connected to the port of the current channel conversion module through an optical fiber, the voltage acquisition module is electrically connected to the voltage transmission module, the current acquisition module is electrically connected to the current transmission module, the voltage transmission module is electrically connected to the voltage A / D module, the current transmission module is electrically connected to the current A / D module, the voltage A / D module and the current A / D module are connected to the high-speed operation module, the high-speed operation module is connected to the switch through the optical fiber, the voltage acquisition module or the current acquisition module in the automatic detection device receives the voltage or current output by the relay protection tester, and transmits it to the voltage transmission module or the current transmission module, amplifies it through the voltage operational amplifier and the current operational amplifier in the voltage transmission module and the current transmission module, and transmits it to the voltage A / D module or the current A / D module to convert it into an electrical signal, and then processes it using the high-speed operation module.

[0022] A data storage / comparison module is also provided in the automatic detection device. The data storage / comparison module is connected to the high-speed computing module via optical fiber, and the data storage / comparison module is connected to the PC via optical fiber. By providing a data storage / comparison module in the automatic detection device, two or more groups of past data can be put together for comparison, and multiple groups of data comparison reports can be generated, which can effectively reduce the occurrence of errors and improve the comparison accuracy.

[0023] A voltage operational amplifier and a current operational amplifier are respectively arranged in the voltage transmission module and the current transmission module.

[0024] The voltage A / D module and current A / D module use 16-bit high-speed A / D.

[0025] Working steps of the present invention:

[0026] First: connect the switch to the PC, connect the relay protection tester to the switch, then connect the electronic load to the switch and the automatic detection device, and finally connect the automatic detection device to the PC. Use the PC to send a command to detect the relay protection tester, and transmit the command to the relay protection tester through the switch;

[0027] Secondly: the relay protection tester starts to output voltage or current, and the voltage or current enters the electronic load. The voltage or current is identified and guided by the voltage channel conversion module and the current channel conversion module in the electronic load, and the voltage or current is transmitted to the automatic detection device;

[0028] Then: the voltage acquisition module or the current acquisition module in the automatic detection device receives the voltage or current output by the relay protection tester, and transmits it to the voltage transmission module or the current transmission module, amplifies it through the voltage operational amplifier and the current operational amplifier in the voltage transmission module and the current transmission module, and transmits it to the voltage A / D module or the current A / D module to convert it into an electrical signal, and then processes it using the high-speed operation module;

[0029] Finally: the calculated data is transmitted to the switch, then enters the PC through the switch, and the detection report is generated through the report generation module.

[0030] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An automatic detection system for relay protection tester, characterized in that: The invention comprises an automatic detection device, a PC, a switch and an electronic load, wherein the PC serves as a main control end, the PC and the switch are connected via an optical fiber, a report generation module is arranged in the PC, the PC and the automatic detection device are connected via an optical fiber, the switch and the electronic load are connected via an optical fiber, and the automatic detection device and the switch are connected via an optical fiber.

2. The automatic detection system for relay protection tester according to claim 1, characterized in that: A voltage channel conversion module and a current channel conversion module are provided in the electronic load, and the voltage channel conversion module and the current channel conversion module are connected to the AC / DC voltage port and the AC / DC current port of the relay protection tester.

3. The automatic detection system for relay protection tester according to claim 2, characterized in that: The automatic detection device includes a voltage acquisition module, a current acquisition module, a voltage transmission module, a current transmission module, a voltage A / D module, a current A / D module, a high-speed operation module, a programming control circuit and a high-speed wave recording module. The voltage acquisition module is connected to the port of the voltage channel conversion module through an optical fiber, the current acquisition module is connected to the port of the current channel conversion module through an optical fiber, the voltage acquisition module is electrically connected to the voltage transmission module, the current acquisition module is electrically connected to the current transmission module, the voltage transmission module is electrically connected to the voltage A / D module, the current transmission module is electrically connected to the current A / D module, the voltage A / D module and the current A / D module are connected to the high-speed operation module, and the high-speed operation module is connected to the switch through an optical fiber.

4. The automatic detection system for relay protection tester according to claim 3 is characterized in that: The automatic detection device is also provided with a data storage / comparison module, the data storage / comparison module is connected to the high-speed computing module via an optical fiber, and the data storage / comparison module is connected to a PC via an optical fiber.

5. The automatic detection system for relay protection tester according to claim 4, characterized in that: The voltage transmission module and the current transmission module are respectively provided with a voltage operational amplifier and a current operational amplifier.

6. The automatic detection system for relay protection tester according to claim 5, characterized in that: The voltage A / D module and the current A / D module adopt 16-bit high-speed A / D.

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