考虑数字控制延时影响的LCL型配电网静止同步补偿器稳定性分析

doi:10.19595/j.cnki.1000-6753.tces.L70752

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Abstract This paper introduced a method of system stability for LCL type D-STATCOM with active damping when the effect of digital controlling time-delays is considered. By analyzing the impact on active damping and its equivalent virtual impedance caused by time-delays, the inherent relationship between time-delays and system stability is illustrated. Specially, a critical value of active damping coefficient is proposed to separate LCL resonance frequency into two distinct resonance frequency regions. And then the necessary conditions for system stability are deduced by identifying the relationship between the active damping coefficient and the critical value in the separated high and low resonance frequency regions. Simulation and experimental results verified the presented method.

Key words： LCL type filter, distribution-static compensator, time-delays stability

Received: 22 August 2016 Published: 01 August 2017

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TM464

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	Xia Wei
	Kang Jinsong

Cite this article:

Xia Wei,Kang Jinsong. Digital Control Time-Delays Affected Stability Analysis of LCL Type Distribution Static Compensator[J]. Transactions of China Electrotechnical Society, 2017, 32(14): 205-216.

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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.L70752 OR https://dgjsxb.ces-transaction.com/EN/Y2017/V32/I14/205

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