摘要详情

ID / 提交时间

132 / 2021-10-27 15:42:41

标题

Stability Assessment of PMSG Wind Farm SSO Based on Negative Gradient of Dynamic Energy

关键字

PMSG wind power system; sub/super synchronous oscillation; negative gradient of energy; stability assessment

主题及专题

Renewable energy system > Other topics in renewable energy

状态

终稿

作者

Yaqi Shen / North China Electric Power University

Jing Ma / North China Electric Power University

摘要

Concerning sub/super synchronous oscillation(SSO) caused by the integration of PMSGs to weak power grid, a method to assess system stability level quantitatively based on the negative gradient of dynamic energy is proposed. First, the function of dynamic energy of PMSG is built. And then, by calculating the negative gradient of dynamic energy of PMSG, which can quantitatively characterize the accumulation or consumption of dynamic energy during oscillation, the stability criteria of SSO can be established. On this basis, the detailed expressions of the negative gradient that contain PLL parameters, equivalent transmission line and stable operating point are derived, and the pattern where system parameters affect the stability of SSO is revealed. Finally, a model of PMSG wind farm is built in RT-LAB for hardware-in-the-loop tests. Simulation results verify that, in different system parameter variation cases, the proposed method can accurately assess system stability quantitatively.

重要日期

会议日期

07月11日

2023

至

08月18日

2023
11月10日 2021

初稿截稿日期
12月10日 2021

注册截止日期
12月11日 2021

报告提交截止日期

主办单位

IEEE IAS

承办单位

IEEE IAS Student Chapter of Southwest Jiaotong University (SWJTU)
IEEE IAS Student Chapter of Huazhong University of Science and Technology (HUST)
IEEE PELS (Power Electronics Society) Student Chapter of HUST