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项目描述:港口、矿井码头配电系统中的谐波源主要是变频器,变频器产生的谐波会通过传导、感应等方式对皮带秤控制系统产生谐波污染,导到皮带秤工作抖动,影响计量准确度。治理措施:在变频器输入侧安装有源滤波器APF进行谐波治理,以保证设备和电力系统的安全正常稳定运行。治理效果:治理后电流谐波畸变率THDi由20%下降为2.9%,同时提升了电网电能质量,从而提高配电系统的可靠性,延长设备寿命,使生产效率稳定。
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