大区互联电网的动态稳定风险评估研究与应用

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Abstract The traditional probabilistic assessment methodology only took safety aspect as a consideration but didn't quantify the consequence of the accident from the economic aspect. To take both two aspects into account, this paper proposed a model and the corresponding method of risk assessment of dynamic stability for large-scale interconnected grid. Further it shows a new criterion of dynamic stability combined with the actual power grid operation data, finally, the author take Yunnan power grid as the objective for the research and application. Through the cases of different sending outputs schemes, it proposes that the risk of dynamic instability can be reduced by coordinating the sending outputs among ends of the interconnected power grid, and it gives the method that how to determine the maximum external feeding power and corresponding operating mode of Yunnan power grid according to the new criterion. Meanwhile, it proves that the dynamic instability risk can be reduced by rational configuring of power system stabilizer and correct scheme of DC modulation, and the both two methods can be used as risk value reduction measures to respond to system dynamic instability fault.

Key words： Large-scale interconnected grids, dynamic stability, power system stabilizer (PSS), risk assessment, instability, economy

Published: 04 January 2017

PACS:

TM712

Fund:国家重点研发计划项目资助（2016YFF0201202）

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	Articles by authors
	Shen Xin¹
	Shu Hongchun¹
	Cao Min²
	Ma Hongsheng²
	Wang Xin²

Cite this article:

Shen Xin¹,Shu Hongchun¹,Cao Min²等. Risk Assessment and Research of Dynamic Stability for Large-Scale Interconnected Grids and Its Application[J]. Transactions of China Electrotechnical Society, 2016, 31(增刊): 230-238.

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https://dgjsxb.ces-transaction.com/EN/ OR https://dgjsxb.ces-transaction.com/EN/Y2016/V31/I增刊/230

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