| 1. | Discussion on calculation method of three - phase short - circuit current
三相短路电流计算方法的探讨 |
| 2. | Three phase short circuit characteristic
三相短路特性曲线 |
| 3. | Research of a three - phase short current limiter in distribution power systems
一种配电网用固态三相短路限流器的研究 |
| 4. | The paper gives a method to get the time when current value equal zero beforehand , based on researching the three - phase symmetry short circuit adopting half - wave fourier transform algorithm
以改进半波傅氏算法为基础对三相短路电流进行分析，具体给出其零点的求取方法，并使用matlab进行了仿真。 |
| 5. | The dynamic simulating system used to do the research of governor control had been established by the device . the dynamic simulating tests of gahc used on steam turbine and hydro turbine had been done with the device . the tests were three phases short circuit , restoring synchronous operation and restraining low frequency oscillation in three - machines system
利用该装置对gahc在汽轮发电机和水轮发电机上的控制进行了以下动模实验：单机无穷大系统中三相短路故障实验和发电机发生失步故障后的再同步实验、三机无穷大系统中抑制低频振荡的动模实验。 |
| 6. | Simulation and comparison are made on the variations of all the electric parameters when the failures of the excitation - loss and the three - phase short - circuit at the side of generator - transformer occur ; in which the dynamic process of the excitation - loss is deeply studied and then a excitation - loss protection plan more suitable for generator concerned is put forward herein as well
文中通过对发电机发生失磁故障及发电机变压器侧发生三相短路故障时各电气量的变化进行仿真、比较，深入研究了失磁的动态过程，提出了一种更合适的发电机失磁保护方案。 |
| 7. | And matrix equations calculating the responses of coupled vibrations are deduced . a set of software analyzing coupled vibrations is developed . the responses of flexural vibration , torsional vibration and torsional torque are analyzed under some fault cases , including mass escaping of low - pressure and generator rotors
利用该软件，分析了低压缸和发电机转子发生质量飞脱事故，发电机出口端发生三相、两相短路故障，发电机非同期并网故障以及电网三相短路重合闸故障时，机组轴系的弯振、扭振及扭矩响应情况。 |
| 8. | It is means that gahc would be harmless to the stability of other generators , when it is used to reduce the ste of local generator . the simulating tests of gahc used on steam turbine and hydro turbine had been done in single machine system and multi - machine system . the results of simulating tests show that the generator stability could be improved by gahc , it is harmless to the stability of other generators in multi - machine system
在单机系统和三机无穷大系统中对汽轮发电机和水轮发电机的gahc控制进行了仿真实验，仿真实验结果验证了： gahc提高了汽轮发电机和水轮发电机抵抗三相短路故障扰动冲击的能力； gahc在多机系统中对其它发电机的稳定性不会产生危害作用；水轮机的gahc克服了水锤效应对稳定性的危害作用。 |
