Management control system and method of transformer-station valve-regulated lead acid (VRLA) batteries

Abstract

The invention relates to a management control system of transformer-station VRLA batteries. The system comprises a voltage and current detection unit, multiple voltage detecting and balancing units and a master control unit, wherein the voltage and current detection unit employs a Hall sensor to timely detect the total voltage, charging / discharging current and charging / discharging capacity of a battery group which is composed of all storage batteries, and is equipped with a CAN communication interface with the master control unit to upload data in real time; the voltage detecting and balancing units are connected with the batteries of the battery group, detect related parameters of the batteries in real time, actively balance voltages and communicate with the master control unit; and the master control unit manages and stores data and is communicated with a host computer. The invention also relates to a management and control method of the transformer-station VRLA batteries. According to the invention, an online intelligent battery management system which is capable of actively balancing the batteries and detecting battery health replaces a battery inspecting instrument which can only detect voltages of the batteries, thereby balancing battery voltages online in real time, accurately predicting health levels of the batteries, improving operation and maintenance levels, improving automation degree of the transformer station, and easing the burden of workers.

Description

technical field [0001] The invention relates to a management and control system for storage batteries, in particular to a management and control system for valve-regulated lead-acid storage batteries in substations. The invention also relates to a management and control method for valve-regulated lead-acid storage batteries in substations using the system. Background technique [0002] Valve-regulated lead-acid batteries (VRLA) have been widely used in substations, basically replacing the traditional open flooded batteries. Compared with flooded lead-acid batteries, VRLA has the advantages of large volume specific energy, good discharge performance, and small maintenance workload. [0003] According to the actual use situation on site, due to various reasons, VRLA batteries will leak, deform, lose capacity in a short period of time and even fail during operation, which seriously affects the operation reliability of the power supply system. An important reason for this situ...

AI Technical Summary

Problems solved by technology

The current battery management basically monitors the battery's float voltage, which cannot reflect the health of the battery

The traditional method of battery capacity verification is to manually discharge and check the capacity of the battery pack on a regular basis, which is time-consuming and laborious. Due to personnel factors, there may be errors in the test data

Also, for systems with only a single battery pack, full discharge detection is dangerous to the substation

Images