A method for replacing valve-regulated lead-acid batteries in a substation with electricity

Abstract

The invention relates to a method for replacing a valve-regulated lead acid battery in a substation with electricity, which comprises the following steps of: manufacturing a bridging device comprisingtwo bridging wires, a diode, a positive electrode post clip and a negative electrode post clip, wherein the negative electrode post clip and the positive electrode post clip are respectively connected with the positive electrode of the diode and the negative electrode of the diode through a bridging wire; Clamping the positive electrode pillar clamp and the negative electrode pillar clamp on theseries lead of the positive electrode and the negative electrode of the fault battery respectively; Disconnect the series lead and the positive and negative poles of the fault battery respectively, and then connect the spare battery into the battery group through the series lead; Remove the positive and negative pillar clips from the series lead. The invention has reasonable design, ensures the reliable power supply of the DC system, and ensures the personal safety of the working personnel in the replacement process. At the same time, the working efficiency of replacing the faulty batteries isimproved, so that the maintenance personnel can quickly, timely and safely isolate the faulty batteries after discovering the problems.

Description

technical field [0001] The invention belongs to the technical field of substation DC power supplies, in particular to a method for live replacement of a valve-regulated lead-acid storage battery in a substation. Background technique [0002] The DC power supply system in the substation is responsible for the power supply tasks of relay protection and automation devices, control power supply, emergency lighting and other equipment in the substation. The valve-regulated lead-acid battery (VRLA) is the core equipment of the DC power system, and it is the last support of the substation when the substation or rectification equipment fails. The storage battery is the most vulnerable and difficult to maintain among all the equipment. When the capacity of a storage battery drops sharply, or when failures such as damage or leakage occur, the storage battery needs to be replaced. [0003] At present, the method for replacing the faulty battery is to cut off the power of the substatio...

AI Technical Summary

Problems solved by technology

Since most of the 35kV and 110kV substations currently have only one set of battery packs, which can neither be open nor short-circuited, it is very difficult to replace the faulty battery, and it can only be loaded temporarily with the help of a charger. However, at this time, if Short-circuit faults in substations cause sudden situations such as excessive short-circuit current and switch tripping, which will pose a huge threat and impact on the personal safety and equipment safety of the staff in the substation.

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