The faults of HVDC power transmission system make the electrical characteristics of AC system more complex.
故障的直流输电系统中的电气特性的交流系统更复杂。
The overhead line of HVDC power transmission system needs positive and negative leads only, allowing for high power, low loss and long distance power transmission;
高压直流输电系统架空线路只需正负两 极导线，可实现大功率、低损耗、长远距离电 力的直接输送；
Compared to the ac Transmission and local power generation, HVDC light system is not only cost advantages, it also exchanges to enhance ac power quality for a new approach.
比起交流输电和本地发电，轻型高压直流输电系统不仅具有成本优势，它也对提高交流电网电能质量提供了新的途径。
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