摘要
首先使用容量卷积公式计算出HVDC系统的容量-概率模型,然后对经典有功调整模型进行扩展,以模拟HVDC线路用于远距离输电和系统互联等场合。为了避免交直流系统交流潮流计算后出现平衡机出力越限问题,在有功调整模型中考虑了系统的有功损耗,并在纯交流系统可靠性评估无功/电压线性化校正模型的基础上,提出了计及HVDC线路影响的调整模型。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 capacity convolution method is used to derive the capacity-probability model of HVDC（High Voltage Direct Current） system and an improved active-power adjustment model is developed for the long-distance power transmission and interconnection of hybrid AC/DC power system,which considers the network active-power loss to avoid the output violation of generating units at the slack bus.Based on the linear reactive power and voltage adjustment model for AC system reliability estimation,an adjustment model is proposed to take the influence of HVDC into account.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.
出处
《电力自动化设备》
EI
CSCD
北大核心
2011年第7期10-16,共7页
Electric Power Automation Equipment
基金
国家自然科学基金资助项目(50777052)
教育部博士点基金资助项目(20100201110022)~~
关键词
交直流系统
可靠性
高压直流输电
容量卷积法
评估
AC/DC hybrid power system
reliability
HVDC power transmission
capacity convolution method
estimation
