中国电机工程学报2018，Vol.38Issue(9)：2589-2598,10.DOI:10.13334/j.0258-8013.pcsee.170388
适用于电力电子化电力系统的同调等值判据
Coherency Criterion Applicable to Power Electronics Dominated Large Power Systems
摘要
Abstract
With the development of renewable energy generation systems, power conversion devices permeate the power system massively. To research dynamic characteristics of power conversion devices under disturbance and stability of the power electronics dominated power systems accurately and productively, a simplified model of multiple power conversion devices is expected to be established. Coherent equivalence is a modeling method capable of preserving the original structure of the element, and the equivalent model has specific physical significance. Thus, coherent equivalence was used to build the simplified models. The set of the coherency criterion determines on the effectiveness of the equivalent model. For the inverters with multiple state variables, a coherency criterion based on generalized Hamilton's action was proposed, and it wa simplified for practical use according to the principle of energy conservation. For synchronous generators, Hamilton's-action-basedtraditional power-angle-based criterion were proved to be compatible. Thus, the universal method of coherency identification is presented. The equivalent model of 7 paralleled inverters was built based on the practical criterion. Comparison of dynamic characteristics of detailed and equivalent models verified the effectiveness of the coherency criterion.关键词
电力电子化电力系统/变流器/同调判据/哈密顿作用量/等值建模Key words
power electronics dominated power systems/converter/coherency criterion/Hamilton's action/equivalent modeling分类
信息技术与安全科学引用本文复制引用
廖书寒,查晓明,黄萌,孙建军,胡伟..适用于电力电子化电力系统的同调等值判据[J].中国电机工程学报,2018,38(9):2589-2598,10.基金项目
国家自然科学基金项目 (51190102,51277137,51637007).Project Supported by National Natural Science Foundation of China (51190102, 51277137, 51637007). （51190102,51277137,51637007）
