直流输电接地极电流对电力变压器的影响

对于以大地返回方式运行的直流输电系统 ,其接地极电流会通过变压器中性点流过变压器绕组 ,可能引起变压器磁饱和 ,导致变压器噪音增大、波形变化、损耗增加和温升增高。因此 ,应根据实际情况 ,采取有针对性的措施 ,使流过变压器的直流电流控制在可允许的范围内。

Influence of DC Transmission Ground Electrode Current on Power Transformers

For DC transmission system operated in the way of g round return the current of its grounding electrode can flow through the winding s of the transformer via the neutral point of the transformer, which may cause t he magnetic saturation of the transformer, resulting in noise increase, wave sha pe change, loss increase and temperature rise to the transformer. So it is neces sary to take effective measures to control the DC current through the transforme r within the allowable range according the concrete conditions. [