电力系统稳定性物理模拟实验研究

为进一步分析电力系统稳定性问题,以华中科技大学研制的WDT-Ⅲ型电力系统综合自动化试验台为实验平台,结合电力系统稳定性分析基本理论,系统地进行了电力系统静态和暂态稳定性物理模拟实验、发电机功率特性和功率极限实验。研究了在无励磁调节、手动调节及自动励磁调节情况下,发电机组的功率特性和功率极限的测定。通过电力系统暂态实验观察了不同故障类型、故障切除时间对暂态稳定的影响。研究结果表明,为提高电力系统稳定性所采取的一些措施可行,还分析了各种措施的原理、实用范围及特点并进行了对比,提出实际应用中应根据电力系统的实际情况具体分析、实施。

Experimental Research of Physical Simulation for Power System Stability

The methods for improving power system stability were studied in this paper.Based on the experimental platform of power system integrated automation WDT-III which was developed by the Institute of power automation technology in HUST(HuaZhong University of Science and Technology),and based on the fundamental theory of power system stability analysis,the physical simulation tests for power system transient stability and static stability were conducted systematically.The measurement of power characteristics of a generator and maximum power limit were analyzed under conditions of unavailable excitation regulator,manual excitation regulator and automatic excitation regulator.The impacts of various fault types and fault elimination time on the power system transient stability were observed through power system transient experiment test.The experimental results demonstrate that the measures of increasing power system stability could be taken,for instance,optimization by network topology,utilization of PSS(power system stabilizer),variation of generator electric motive voltage.Moreover,the effects of relay coordination and auto-reclosure were also discussed.Finally,A propose was put forward that special care should be paid according to power system real operation situation,especially in power system practical application.