自愈式电容器组爆炸演变过程分析及仿真研究

电力系统使用的电容器组发生爆炸是一个绝缘破坏的渐变过程,为了研究这一过程,本文以能量为线索建立数学模型,从单个自愈电容器绝缘下降到电容器组发生爆炸的演变过程展开分析,并运用ATP-EMTP仿真软件对这一演变过程进行了仿真研究。结果表明由于能量的累积,及时有效地切除击穿电容器对整个电容器组的安全运行至关重要。数学推导和仿真计算相结合,对于更清晰地认识电容器组绝缘破坏的演变过程具有一定的指导意义。

Analysis and Simulation Research to the Evolutionary Process of Explosion in Self-healing Capacitor Bank

The explosion of the capacitor bank used in power system is a gradual process to the insulation damage.In order to study this process,a mathematical model which took energy as a clue was established in this paper,the evolution process of insulation damage from a single self-healing capacitor to the capacitor bank was analyzed,and ATP-EMTP simulation software was used to study the evolution.The conclusions indicate that it is critical to cut off breakdown capacitors timely and effectively for the safe operation of capacitor bank because of energy accumulations.The mathematical derivation and the simulation were combined in this paper,which have a certain significance for understanding the insulation damage evolution of capacitors more clearly.