Method for on-line whole group logic calibration of 10kV protecting device

Abstract

The invention relates to a whole group logic calibration technology of a 10kV protecting device, in particular to a method for on-line whole group logic calibration of the 10kV protecting device. The functions of a replay protecting test instrument for whole group logic calibration are divided into breakdown simulation, data analysis and logic judgment, wherein the breakdown simulation and data analysis are integrated through a calibration module, and the logic judgment is achieved through an upper control center in a long distance. The calibration module is integrated in a control center of relay protecting equipment, action is conducted only by carrying out breakdown simulation and controlling the relay protecting equipment according to a logic instruction, data after the action are judged and analyzed through the upper control center in the long distance, and remote testing can be achieved. Meanwhile, an interface of the upper control center can also be used for judgment for maintenance personnel, an on-line test is achieved perfectly, power outage is of no need, and the safety, the stability and the reliability of operation of a power grid are guaranteed. The whole operation process is an automatic control process, and therefore the method is simple, convenient and high in efficiency.

Description

technical field [0001] The invention relates to a logic check technology for a whole group of 10kV protection devices, in particular to an online logic check method for a whole group of 10kV protection devices. Background technique [0002] In the 10kV protection device, the relay protection equipment needs to perform a whole group of logic verification to ensure the correct and reliable action of the protection, and realize the safe and stable operation of the power grid. In the existing logic test technology of the whole group of relay protection equipment, when the 10kV feeder is out of power and the 10kV circuit breaker is overhauled, the fault current signal is simulated by the relay protection test instrument, and then the relay protection equipment operates the outlet to make the circuit breaker Simulate opening at the time of fault, and then reclosing after a certain delay (overhead lines flashover for a short time during lightning strikes, but such faults are not pe...

AI Technical Summary

Problems solved by technology

However, this method needs to be implemented in the state of power outage, and in the state of power outage due to the maintenance of circuit breaker equipment, and it needs to be realized by external equipment (relay protection tester), so a series of operations are required to Complete, the operation is cumbersome, the efficiency is low, and the problem cannot be found in time, it is easy to affect the safe and stable operation of the power grid, and there are hidden dangers of insecurity and unreliability