Considering the sensitivity of virtual nodal voltage to line reactance and variation of reactive power of power grid comprehensively, the voltage instability index is put forward.
综合考虑节点电压关于线路电抗和系统无功功率变化的灵敏度，提出了电压失稳指标。
By means of the proposed algorithm the sensitivity of nodal voltage to any network parameter can be obtained, such as line reactance, variation of reactive power of power grid and so on.
通过该算法可得到节点电压对任何网络参数的灵敏度，比如线路电抗、电网无功功率的变化等。
In the special power supply model, the reactive power losses caused by the line reactance have an influence on the measurement of reactive power on both sides of the line, which is an objective fact.
专线供电模式中，线路电抗性质所引起的无功损耗对线路两侧无功计量量值的影响，是客观事实。
The theory of fault locating by calculating the reactance of feeder line with measured fault current and voltage is introduced.
介绍了利用故障电压和故障电流计算故障回路电抗值的电抗法故障点定位的原理。
The theory of fault locating by calculating the reactance of feeder line with measured fault current and voltage is introduced.
介绍了利用故障电压和故障电流计算故障回路电抗值的电抗法故障点定位的原理。
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