转炉倾动回馈发电效益分析

The BenefitAnalysis of Converter Tilting Feedback Generation

当转炉炉体从加料侧或者出钢侧摇回0°或者转炉减速的过程中,电动机处于发电运行状态。传统倾动能耗制动控制方案通过配置制动单元和制动电阻的方法将电机发电能量转化为热能耗散掉,这种方式会造成能量浪费;如果将传统方案中的整流单元用整流/回馈单元替代,就能将电机在发电状态下产生的能量回馈至电网,能够达到节能增效的目的。但是采用整流/回馈方案比传统的能耗制动方案初期投资大。本文计算了用整流/回馈控制方案替代能耗制动方案需要增加的投资,同时对比整流/回馈方案下实现节电所带来的回报。

The motor is in the state of the power generation operation in the deceleration process when the furnace is from the feed side or the side of a steel pans back to 0 ° or BOF. Traditional control methods use braking unit and braking resistor to transform motor power generation energy into heat energy dissipated, which will cause energy waste. If using feedback alternative unit in place of the rectifier unit, the power can be generated to the grid, thus achieving the purpose of energy efficiency. However, using rectifier / feedback unit need larger initial investment than traditional energy consumption methods. We calculate the investment against the increase alternative energy consumption, and compare rectifier / feedback program to achieve power saving return.