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

Abstract

The invention discloses an intelligent alarm method and system based on spare power automatic switching analysis of a power system. The method comprises the steps: determining preset action logic of spare power automatic switching under each fault event according to collected electrical quantity information and a predetermined spare power automatic switching model; according to the collected monitoring information and the predetermined spare power automatic switching model, judging a current action state of spare power automatic switching under each fault event; and obtaining final spare powerautomatic switching action information corresponding to each fault event by integrating the preset action logic of the spare power automatic switching and the current action state obtained by judgment. The method can be used to determine whether the spare power automatic switching is the spare power automatic switching maloperation caused by people or equipment damage or a correct action caused by an actual fault of a main power supply fault, does not need operation and maintenance personnel to go to a substation end for confirmation, can reduce dependence on the experience of the field personnel through judgment, and can greatly shorten the mode 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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