Intelligent transformer gear shifting method based on voltage out-of-limit starting optimal algorithm

Abstract

The invention discloses an intelligent transformer gear shifting method based on a voltage out-of-limit starting optimal algorithm. The method, on the basis of an original main transformer measurementand control device, sets an out-of-limit range of a bus voltage and sets conditions for triggering output of a gear shifting instruction, and realizes automatic gear shifting after the bus voltage isout of limit; if the 10kV bus voltage is lower than 10kV or higher than 10.7 kV, an upshift or downshift instruction is output in a delayed broadening mode for 10 seconds; and when the 10KV bus voltage reaches 10-10.7 kV, the output of the gear shifting instruction is stopped. The problems that in the prior art, the workload of manual gear shifting is large, normal power utilization is affected or electrical equipment is damaged due to unqualified user-side voltage caused by untimely voltage regulation or low accuracy, misoperation accidents are caused by frequent operation of scheduling andoperating personnel in the gear shifting process, and dependence on communication optical fibers is large are solved.

Description

technical field [0001] The invention belongs to the technical field of power system relay protection automation, and in particular relates to an intelligent transformer shifting method based on an optimal algorithm for voltage over-limit start-up. Background technique [0002] With the continuous development of the power grid, especially the continuous increase in the number of 110kV and below main transformers, the work pressure of dispatching and operating personnel is also increasing, and the pass rate of 10kV bus voltage directly affects the quality of user voltage. Therefore, the staff need to The transformer is adjusted to ensure that the 10KV bus voltage is within the qualified range. In the daily operation and maintenance process, the existing technology is to collect the voltage through the main transformer measurement and control device and transmit it to the background of the main station through the communication optical fiber uplink channel, and the background ju...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is: to provide an intelligent transformer gear adjustment method based on the optimal algorithm for voltage over-limit startup, so as to solve the problem that the prior art gear adjustment method has a large workload and is prone to untimely or inaccurate voltage adjustment. High, resulting in unqualified user-side voltage affecting normal power consumption or damage to electrical equipment, misoperation accidents caused by frequent operations by dispatching operators during the shifting process, and large dependence on communication optical fibers.

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