传统的电网可靠性评估方法主要基于系统充裕性分析，即系统在规定运行要求下满足系统负荷需求的能力，以此评价电网的供电可靠性。
Traditionally, power network reliability evaluation has concentrated on the analysis of system adequacy, i. e. the ability to supply all loads within performance requirement.
最后对含hvdc线路的发输电系统进行了充裕度评估，研究了网损、电压及HVDC系统元件备用等因素对交直流系统可靠性指标的影响。
The adequacy estimation of power system with HVDC is investigated, including the effect of network loss and voltage, as well as the component backup of HVDC system on system reliability indices.
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