描述
电能质量是指公用电网对电力用户公共连接点的电压质量和电力用户在公共连接点对公用电网的干扰水平。可用谐波电压、电压偏差、电压波动和闪变、三相电压不平衡度、电压暂降、电压暂升、谐波电流、负序电流等参数描述。节能降耗就是应用技术上可靠、经济上可行合理、环境和社会都可以接受的方法,有效利用能源,提高用能设备或工艺的能量利用效率,降低能源的损失与浪费。
随着电网电能质量污染的日益严重,各种电能质量治理措施提上日程,它们对系统的节能降耗起到了积极的作用。而近年来电力电子技术的进步也带动节能技术、设备不断发展,在电网中大量应用的节能设备都使用了现代电力电子技术,将不可避免地对电网电能质量产生一定的影响。因此,有必要对电能质量和节能之间的关系进行研究,以便更好地解决各相关问题。电能质量治理与节能降耗的关系可以从两个方面来论述:一是治理电网电能质量会带来节能效益,二是节能、设备技术对电网电能质量也有影响。
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