基于改进广义导抗法的独立电力系统静态稳定性分析

发布时间：2018-02-27 01:08

本文关键词： 独立电力系统整流发电系统恒功率负载稳定性分析　出处：《电工技术学报》2017年15期 　论文类型：期刊论文

【摘要】：系统稳定性是独立电力系统设计和运行时需要被重点考虑的因素。由于现有稳定性判据的保守性,使得独立电力系统在设计时为保证稳定运行而付出了更多代价,对电力电子装置级联的条件提出了更严格的限制。为此提出同时考虑增益裕度约束和相位裕度约束的改进广义导抗稳定性分析方法,推导了具有更小禁止域的稳定性判据,用以计算多运行点系统的电源广义阻抗约束集和负载广义导纳集。以某同步整流发电机带恒功率负载的独立电力系统为例,验证了所提出的稳定性分析方法的正确性。与现有方法相比,该方法有效降低了保守性,提高了分析精度。
[Abstract]:System stability is an important factor to be considered in the design and operation of an independent power system. Due to the conservatism of the existing stability criteria, the independent power system pays more cost in the design of the independent power system to ensure stable operation. The condition of cascading power electronic devices is restricted more strictly. An improved generalized impedance stability analysis method considering both gain margin and phase margin constraints is proposed, and a stability criterion with a smaller forbidden domain is derived. The generalized impedance constraint set and load generalized admittance set of multi-point power system are calculated. The independent power system with constant power load of a synchronous rectifier generator is taken as an example. The correctness of the proposed stability analysis method is verified. Compared with the existing methods, the proposed method can effectively reduce the conservatism and improve the accuracy of the analysis.
【作者单位】：舰船综合电力技术国防科技重点实验室(海军工程大学);
【基金】：国家重点基础研究发展计划(973计划)(613294) 国家自然科学基金(51377167)资助项目
【分类号】：TM712

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