In each iteration solution process the grounded branch's grounding resistance with the highest sensitivity is modified until the neutral currents of all grounded branches are less than their specified value, while the constraint condition of grounded branches are taken into account. 在每次迭代求解过程中,在考虑了接地支路的约束条件下修改灵敏度最高的接地支路接地电阻,直到所有接地支路的中性点电流小于其限值。
The paper describes the features and installation of the power supply arrestor and the signal arrestor, as well as the calculation and selection of the resistance of the grounded wire for effective lightning protection. 简单介绍电源防雷器和信号防雷器的性能和安装,以及接地线阻抗的简单计算和正确选用,达到有效防雷。
Disadvantages of traditional grounded neutral system of urban distribution network are analyzed briefly. The strong and weak points in resistance neutral grounding are analyzed as well. The basis of selecting the grounded neutral system in urban power network is put forward. 简要分析了城市配电网传统中性点接地方式的弊病,分析了中性点电阻接地方式的优缺点,提出城市配电网中性点接地方式选择的依据。
The Improvement of 10 kV Feeder Three Phase Auto Reclosing Equipment in 16 Ω-Resistance Grounded Neutral System 10kV中性点经16Ω电阻接地方式馈线三相一次重合闸的改进
Installing a lagging phase capacitor in the resistance grounded system; 中性点电抗接地滞后相接电容;
Research on Little Resistance Grounded Neutral System of City Distribution Network Based on BP Module 基于BP模型的城市配电网中性点小电阻接地系统阻值的研究
The Role of Nonlinear Resistance in Petersen Coil Grounded System 非线性电阻在消弧线圈接地系统的应用
For the ground fault current analysis and calculation of derivation were carried out. In the relevant formulas of high resistance grounding transformer grounded, considered the inductive effects of the grounding transformer, in order to understand the distribution transformer with high resistor grounding more deeply. 对接地故障电流进行了分析及计算推导;为了对接地变高阻接地的认识更为深入全面,在接地变高阻接地方式的有关公式中计入了接地变感抗的影响。
When corrosion is severe, grounding device including grounding wire and grounding conductor may quickly get thinner or even broken, which could force the grounding resistance to increase and make those grounded equipments become inadequate grounded. 腐蚀严重时,接地网中的接地体和接地线会变细甚至断裂,使接地电阻升高,电气设备失地。
Simulations are conducted to the faults of single-phase low resistance grounded, single-phase high resistance grounded and single-phase line breakage on different locations, based on the two-terminal transmission power cable model established. 建立电缆输电模型,对不同位置的单相低阻接地、单相高阻接地和单相断线等故障进行仿真。
For the large generator, the neutral point is usually of non-grounded or high resistance grounded through distribution transformer, so the fault current of generator stator winding single-phase ground fault is not big, the damage to stator is small. 对于大型发电机而言,其中性点通常采用不接地或经配电变高阻接地,所以发电机定子绕组单相接地故障产生的故障电流通常不大,对定子绕组的损害也比较小。