Method and device of intelligent calibration for power system relay protection

Abstract

The invention relates to an intellectualized verification method of the relay protection in the electrical power system and the device, which belongs to the testing field. The invention comprises the verification to the relay protection device by using the verification device, and is characterized in that a winding displaced cross matrix are arranged between the verification device and the verified protection device, a relay connection point is arranged at the crossing point of each winding displaced cross matrix, so as to verify the logical controlling device to in sequence put through the connection point of each controlled relay, the electrical quantity at all the port of the winding displaced cross matrix is collected, the on / off at the connection point of the corresponding relay ischosen / controlled according to the preset logical judging condition, so as to ensure that the corresponding input and output terminals between the verification device and the relay protection device are correctly and automatically connected. The invention not only has the intellectualized verification function to the relay protection device, but also realizes the automatic wiring in the verification work, the correctness of the result is guaranteed, the automatic storage of the testing result and the data is realized, and the process efficiency or the completion efficiency of the verification work is enhanced.

Description

technical field [0001] The invention belongs to the field of measurement or testing, and in particular relates to a calibration method and device for a power system relay protection device. Background technique [0002] A device that can reflect the failure or abnormal working conditions of electrical equipment in the power system, and act on the switch to trip or send a signal, is generally called a relay protection device. [0003] The relay protection device is an important equipment to ensure the safe and stable operation of the power system. In the power system, all components or circuits connected to the grid must have relay protection. [0004] After the relay protection device is put into use, due to the influence of the environment and operating conditions, or the influence of the product quality of the components of the relay protection device itself, it may cause the relay protection device to lose the function of correctly judging the fault, which will bring har...

AI Technical Summary

Problems solved by technology

[0007] With the continuous expansion of the scale of modern power systems and the continuous improvement of the requirements for the reliability and efficiency of power system operation and management, the testing work of relay protection personnel has become more frequent and complicated

[0008] In the Chinese patents or patent application documents that have been published or announced, the announcement number is "multifunctional automatic relay calibration platform" with the announcement number CN2041820Y, the "multifunctional electrical calibrator" with the announcement number CN2444245Y, and the " Low-voltage circuit breaker protection characteristics online intelligent verification platform" and the "relay verification device" with the announcement number CN2884220Y both disclose a variety of specific technical solutions for testing relay protection devices, but these technical solutions are all aimed at a certain monomer Type relay protection components, all use the tester as a standard source to measure the characteristics of a single component, only the function of measuring the characteristics of a single component or device, and most of them can only be manually connected to the device to be calibrated, and the calibration item is selected 1. Setting the calibration conditions and reading the calibration results. The main problems are that the work efficiency is low, and the calibration results are greatly affected by human factors. The sharing of experimental data brings certain limitations

[0012] However, it still needs to manually change the test wiring mode, and the experimental data and calibration results need to be manually recorded and confirmed. The calibration results cannot form a calibration report in a uniform format, and the operational skills of the inspectors are relatively high.

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