A06B-0353-B831

A06B-0353-B831

A06B-0353-B831

A06B-0353-B831

A06B-0353-B831

装置内部设置如下保护：交流电网欠压、过压保护，直流电网欠压、过压保护，功率模块过流保护，功率模块过热保护，隔离开关(状态)保护，散热风机故障保护，变压器过热保护等保护。

4 改造后使用效果

为了降低地铁运营成本，南京地铁公司领导经过多方考察，与新风光电子科技股份有限公司签订了在地铁某线路上使用FDBL-JC-650/1500V型再生制动能量吸收逆变装置的协议。经过双方技术人员的紧密配合，制定了周密的改造方案。2015年1月8日，改造工程完成，逆变设备一次性投入运行，至今运行良好，取得了显著的节能效果，达到了改造的预期目的。

该逆变装置将再生制动吸收的能量回馈到400V电网，供给地铁内其他用电设备使用。该逆变装置接入地铁电网系统框图如图5所示。

图5 系统组成框图

为了测试节能效果，南京地铁公司加装了电表计量，测试逆变装置回馈的电量及效果。经过近一年的测试，该装置投运后日均节电1000度左右，年节电约36.5万度，按照南京当地电价0.8451元/度，年节省电费约30.8万元，另外采用该设备节省了原来电阻制动时隧道散热所需的电量，这又节省了一笔可观的开支。

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