查询词典 transient stability

Power system ; unstable equilibrium point; critical cut-set ; transient angle stability

电力系统；不稳定平衡点；临界割集；暂态功角稳定性

Finally,the influences of Fault Current Limiter with controllable series compensation on improving transient stability of power systems were researched.

最后，就FCL对改善电力系统暂态稳定性的影响问题，进行理论研究分析。

Keywords: fault current limiter;series compensation;power quality;transient stability

中文关键词：故障限流器；串联补偿；电能质量；暂态稳定性

But also as to its degree of stability , which is another way of describing the nature of the transient response.

稳定程度实际上还是描述动态响应特性的方式。

Digital simulation shows that the proposed method has good performance in transient stability control of practical systems.

通过在实际工程的仿真计算，证明该方法具有良好的阻抗控制效果。

The direct method is one of the most important methods in the transient stability analysis.

在过去的几十年各国进行了大量的研究，已取得了相当大的进展。

Based on the above results, the new transient stability analysis method of normalized energy function is proposed.

基于上述理论分析，提出了构造电力系统归一化暂态能量函数的方法。

The study of transient stability using entropy in power system is proposed.

三、利用熵的概念，研究了电力系统暂态过程。

In order to improve the reliability of the nuclear Generating Sets and the stabilization of the power system, prevent the long time low frequency oscillation caused by the disturbed of the outside electrical net, assured improving the stabilization margin of the nuclear generating sets in the precondition of enough transient stability, validate the sensitivity of the parameter to the damping of Generating Sets of the MEC5220 digital excitation adjustor produce in Japan that used in the Second Project of Qinshan Nuclear Power Plant, confirm the parameter rationality of the digital excitation adjustor, optimize the parameter of PSS, in this paper, we put up a in-depth study to the principle of MEC5220 digital adjustor produce in Japan by the PSS/E software that develop by the PTI Company in the USA, completed the modeling of the excitation adjustor, PSS, generator, excitor, described the performance of this excitation adjustor, analyzed the essential reason that caused the low frequency oscillation, illuminated the factor that influence the damping characteristic of the MEC5220 digital excitation adjustor. Based on model and emulate, this paper optimized the primary parameter of the excitation adjustor, make a reasonable regulation to the PSS parameter.

为提高核电机组的运行可靠性和接入系统的安全稳定性，防止在外电网的干扰下核电机组发生长时间的低频振荡，保证机组在暂态稳定的前提下提高其稳定裕度，验证秦山核电二期核电机组所配日产MEC5220型数字式励磁调节器参数对机组阻尼的灵敏性，确定数字式励磁调节器的参数的合理性，优化PSS整定参数，本文利用美国PTI公司研发的PSS／E软件对日产MEC5220型数字调节器的原理进行进行了深入细化的研究，完成了励磁调节器、PSS、发电机、励磁机的建模，描述了该型励磁调节器的性能，分析了产生低频振荡的根本原因，阐明了影响阻尼特性的因素。

Based on this concept, the method of dynamic multi-dimension order control in Taylor series expansion technique for transient stability analysis is presented.

在计算暂态稳定轨迹的过程中，根据各个状态变量的不同动态特性和计算精度约束，对时间常数不同的环节采用不同的阶数。

Researches reveal that students who suffer from corporal punishment tend to resort to violence in their future life.

研究表明遭受过肉体惩罚的孩子倾向于在他们今后的人生中使用暴力。

Total sugar of sarcocarp and chlorophyll of pericarp increased firstly, and then decreased afterward along with altitude; Titratable acidity, ascorbicacid and anthocyanin of pericarp were increased along with altitude; The content of protein increased firstly and decreased afterward along with altitude; Carotenoid of pericarp were decreased along with altitude.

果肉总糖和果皮叶绿素含量随海拔高度升高先升高后降低；可滴定酸、维生素C和果皮花青苷含量均随海拔升高而升高；蛋白质在1720m处最大，1420m处最小；果皮类胡萝卜素随海拔升高而降低。