Intelligent verification monitoring device for density relay, and gas supplementation and verification methods of device

Abstract

The invention discloses an intelligent verification monitoring device for a density relay. The device comprises a mechanical module, a circuit module and a background module; the mechanical module isconnected with the circuit module; the circuit module is connected with the background module through a network; and after the mechanical module is connected with the background module through the circuit module, normal communication can be carried out. The invention further discloses a method for verifying the density relay by using the device, a method for supplementing gas by using the device,and a method for verifying the device. According to the intelligent verification monitoring device for the density relay, and the gas supplementation and verification methods of the device, online monitoring, intelligent verification and gas supplementation integrated functions are achieved; and intelligent judgment of the accuracy of the density relay is a necessary means for achieving a networked online intelligent verification monitoring system in the power industry.

Description

technical field [0001] The invention relates to a monitoring and calibrating device, in particular to a density relay intelligent calibrating and calibrating monitoring device and an air supply calibrating method thereof, belonging to the technical field of electrical instrument monitoring. Background technique [0002] Switchgear is an electrical device that has been widely used in the power system, and its reliable operation has become one of the important guarantees for the stable power supply of the power system. The density relay is an important means installed on the switch to monitor the change of gas density to ensure the insulation performance of the switch. If the gas density drops to the corresponding threshold value, an alarm or lockout will be generated to prevent vicious explosion accidents during the switch operation. Therefore, the quality of the density relay is directly related to whether the switch can operate normally. Therefore, in the power industry, ...

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Problems solved by technology

[0004] Disadvantages of the existing calibration method: 1. The density relay needs to be disassembled, which is cumbersome and inefficient; 2. The original sealing performance is destroyed during the disassembly and installation process; 3. It is inevitable that bumps will occur during transportation, and the instrument will be damaged. ;4. It is easy to install the density relay in the wrong position during the installation process; 5. The disassembly and installation of the density relay needs to be done in real time during the maintenance and power outage, the time is tight, the task is heavy, and the personnel are prone to fatigue and mistakes; Function, it is difficult to disassemble and assemble, and there is personal danger; 8. Non-disassembly method, the electrical circuit needs to be disassembled and installed. During the live operation, once the steps are wrong, it will cause the wrong alarm and blocking signal to enter the relay protection, causing the circuit to be broken. 9. The non-disassembly method requires dismantling the rain cover and switching valves. The process is cumbersome and inefficient, and the personnel are prone to fatigue and make mistakes; 10. The non-disassembly method, It is necessary to connect the air pipe of the calibrator at the gas supply interface, and the on-site operation space is limited; 11. Non-disassembly method, the calibration requires gas cylinders, and more gas will be discharged during the calibration process, resulting in waste; 12. Non-disassembly method, Strong professional requirements for personnel, and more personnel are required, which wastes manpower; 13. The entire verification process requires a lot of manual participation, and only one record can be verified at a time, which is inefficient. The disassembly type verification takes an average of 30 minutes per unit. It takes at least 10 minutes for each density relay of the non-disassembly type to check, and it takes at least 1 hour; 14. It is necessary to manually record the calibration data, copy the data and input it into the computer to form a report file

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