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- Title
采用功率同步控制的构网型换流器并网暂态同步 稳定研究.
- Authors
项中明; 倪秋龙; 李振华; 徐建平; 李斯迅; 张哲任; 徐 政
- Abstract
The proportion of the integrated converters using PSC (power synchronization control) in power systems is increasing year by year, but there is a lack of in-depth research on the transient synchronization stability. Therefore, the transient synchronization stability mechanism of integrated grid-forming converters using PSC is analyzed, and measures to improve the transient stability of the converter are proposed. First, the transient stability model of the grid-forming converters with PSC during grid fault is established. Subsequently, based on the phase diagram curve (PDC) method, the destabilization mechanism of the converters and the effect of voltage coupling on the transient synchronous stability are investigated. Moreover, a control strategy to improve the transient synchronous stability by dynamically adjusting the active power command value is proposed based on the effect of voltage coupling. Finally, the electromagnetic transient simulation model of an equivalent system in a city is constructed by using PSCAD/EMTDC, which verifies the correctness of the transient stabilization mechanism of the converter-connected power system and the effectiveness of the stabilization enhancement measures under different fault conditions.
- Subjects
PHASE diagrams; SYNCHRONIZATION; ELECTRIC transients; SIMULATION methods &; models; VOLTAGE
- Publication
Zhejiang Electric Power, 2023, Vol 42, Issue 9, p77
- ISSN
1007-1881
- Publication type
Article
- DOI
10.19585/j.zjdl.202309010