基于二阶导数频响优化积分器的电力系统暂态仿真中不连续性处理改进方法
Improved Method for Dealing with Discontinuities in Power System Transient Simulation Based on Frequency Response Optimized Integrators Considering Second Order Derivative
摘要：
本文揭示了采用二阶导数数值积分器的电力系统暂态仿真新方案与采用一阶导数数值积分器的传统方案之间的不连续性导致的结果不一致。这种分歧是由于不同的数值积分公式。提出了一种改进的方法来处理新的暂态仿真方案中的不连续性，以解决不一致。通过数值算例验证了改进方法的有效性。虽然针对一种特殊的暂态模拟方案对这种分歧进行了研究并提出了改进方法，但类似的结论也适用于其他使用考虑高阶导数的数值积分器的暂态模拟方案。
英文摘要：
Potential disagreement in the result induced by discontinuities is revealed in this paper between a novel power system transient simulation scheme using numerical integrators considering second order derivative and conventional ones using numerical integrators considering first order derivative. The disagreement is due to the formula of the different numerical integrators. An improved method for dealing with discontinuities in the novel transient simulation scheme is proposed to resolve the disagreement. The effectiveness of the improved method is demonstrated and verified via numerical case studies. Although the disagreement is studied on and the improved method is proposed for a particular transient simulation scheme, similar conclusions also apply to other ones using numerical integrators considering high order derivative.
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