Intelligent alarm method and system based on the analysis of power system backup and automatic switching

Abstract

The present invention discloses an intelligent alarm method and system based on the analysis of power system standby automatic switching, including determining the preset action logic of standby automatic switching in each fault event according to the collected electrical quantity information and a predetermined standby automatic switching model; The collected monitoring information and the pre-determined standby automatic switching model are used to judge the current action state of the standby automatic switching system under each fault event; the final standby automatic switching system corresponding to each fault event is obtained by integrating the preset action logic of the standby automatic switching system and the current action state obtained from the judgment. Self-injection action information. The invention can determine whether the standby automatic switching is caused by man-made or equipment damage or the correct action caused by the actual failure of the main power supply, without the need for operation and maintenance personnel to confirm at the substation, and the judgment can reduce the need for on-site personnel Relying on experience can greatly shorten the way recovery time.

Description

technical field [0001] The invention relates to the technical field of electric power system power supply, in particular to an intelligent alarm method and system based on the analysis of electric power system backup and automatic switching. Background technique [0002] With the rapid development of my country's economy, higher requirements are put forward for the entire power industry, and reliable power supply has become the goal pursued by all power companies. For regions with a voltage level of 110kV and below where the power supply grid is relatively weak, a large number of backup power automatic input devices are equipped. Because the operation of the regional power grid will be changed after the backup and automatic switching operation, it will often cause the main transformer or power supply line. Overload will also bring difficulties to operation and maintenance. Therefore, high requirements are put forward for the reliable operation of the backup automatic switchi...

AI Technical Summary

Problems solved by technology

[0009] (1) It can only truthfully reflect the fault information sent by the substation, and it is impossible to determine whether the standby automatic switching action is correct according to the set action logic. longer

[0010] (2) It is impossible to determine whether the standby automatic switch is malfunctioning, whether it is caused by human or equipment damage or is caused by a fault outside the protection range. The existing method requires operation and maintenance personnel to go to the sub- Confirmation at the station side, on the one hand, the time is too long, on the other hand, the judgment of misoperation depends entirely on the experience of the on-site personnel, which requires high level of operation and maintenance personnel, and is not intelligent enough, which greatly delays the recovery time of the operation mode

[0011] (3) It is impossible to judge whether the standby automatic switch is refused to operate, and it cannot provide strategic support for the control personnel to quickly restore power supply

[0012] (4) Unable to provide accident analysis of the main station terminal backup self-input, unable to provide basis for accident recall and accident accountability

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