一种基于投影积分算法的微电网稳定性仿真方法

发布时间：2018-05-08 03:40

本文选题：微电网 + 稳定性仿真　；参考：《电工技术学报》2014年02期

【摘要】：微电网中形式各异的分布式电源使其在动态响应上体现为多时间尺度特征,其稳定性仿真算法在数值稳定性和计算效率方面需要满足更高的要求。本文提出一种基于投影积分算法的微电网稳定性仿真方法,每一个投影积分步由若干小步长积分步(内部积分器)和一个大步长积分步(外部积分器)组成,仿真步长及投影步长可根据系统快、慢动态响应的时间常数选取,可有效实现传统显式积分算法数值稳定性的提升,且为2阶精度算法。以一个低压微电网为例,通过与商业仿真软件的仿真结果进行比较,验证了算法的正确性和有效性。
[Abstract]:The dynamic response of distributed generation in microgrid is characterized by multiple time scales, and its stability simulation algorithm needs to meet higher requirements in terms of numerical stability and computational efficiency. In this paper, a simulation method of microgrid stability based on projection integral algorithm is proposed. Each projection integral step consists of several small step integral steps (internal integrator) and a large step size integral step (external integrator). The simulation step size and the projection step size can be selected according to the time constant of the fast and slow dynamic response of the system, and the numerical stability of the traditional explicit integral algorithm can be improved effectively, and the algorithm is of second order accuracy. Taking a low-voltage microgrid as an example, the correctness and validity of the algorithm are verified by comparing the simulation results with commercial simulation software.
【作者单位】：天津大学智能电网教育部重点实验室;广东电网公司佛山供电局;
【基金】：国家高技术研究发展计划(863计划)(2011AA05A114)资助项目
【分类号】：TM712

【参考文献】