1) reactive power price cost margin index
无功价格成本裕度指标
2) reactive power margin index
无功功率裕度指标
1.
Firstly, the bus voltage change index and the reactive power margin index are calculated in accordance with the P-V curve and Q-V curve, respectively.
首先根据P-V和Q-V曲线计算出节点的电压变化指标和无功功率裕度指标;在此基础上,提出了采用理想点评价方法将2种电压稳定指标进行综合用于辨识系统薄弱节点。
3) Power Margin Index
功率裕度指标
4) reactive power margin
无功裕度
1.
Based on the features of simple alternating- current circuits, a concept of reactive power margin is proposed and the node where power system reactive power compensator is installed is determined by the ordering of reactive power margins of nodes.
基于简单交流电路的电压电流特性,提出了无功裕度的概念。
2.
Based on the features of simple alternating current circuits,a concept of reactive power margin is proposed and the node where distribution system reactive power compensator is installed is determined by the ordering of reactive power margins of nodes.
基于简单交流电路的电压电流特性提出了无功裕度的概念,根据节点无功裕度的排序确定了配电网的无功补偿地点,并在此基础上用改进的遗传算法进行了无功优化规划。
5) margin index
裕度指标
1.
At first,voltage collapse point is traced by improved continuation power-flow method under the premise that load increasing pattern is given,the distance away from collapse point which can be regarded as margin index can be got at the same time.
首先在给定负荷增长方式的前提下,利用改进连续潮流法快速地找到电压崩溃点,进而求得当前运行点离崩溃点间的距离,并以此距离作为裕度指标,然后采用模糊集理论将裕度指标和网损指标两个目标优化问题转化为单目标优化问题,最后利用改进的禁忌算法对该单目标进行优化,使系统在满足约束的情形下既经济又安全地运行。
2.
This paper brings forward a new margin index based on power.
本文给出了一种具有较高的准确性、线性性、含有丰富节点信息的功率裕度指标,并给出了基于该指标的电网关键节点的识别方法。
3.
A detail analysis of its voltage stability is made,which uses sensitivity index,singular value index and margin index together to determine the weak buses,critical lines and weak areas,as well as the stability margins of these areas in summer-heavy operation mode of 2001 and 2002.
综合运用灵敏度、奇异值和裕度指标,针对2001年和2002年的丰水期大负荷运行方式,分析了广西电网的静态电压稳定薄弱节点、关键线路和薄弱区域及其稳定裕度,展示了广西电网静态电压稳定性的改善情况及现状。
6) clearance factor
裕度指标
1.
Then the analysis technique of statistic,the clearance factor calculating,is applied in the characteristic parameter extraction.
本文利用小波包分解岸桥铰接处的故障信号,然后用平滑法对分解后各频带的信号进行统计量———裕度指标的计算,提取其特征参数,发现经过尺度为5的小波包分解后,在2625~2750Hz频段内,平滑裕度指标随着岸桥铰接处轨道的高度差的增加,存在着一定的变化规律。
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