Frequency Characteristics of Yunnan Power Grid and Corresponding Over-Frequency Generator Tripping Scheme After Asynchronous Interconnection

Lei ZHOU, Dan ZHANG, Fusuo LIU, Wei HUANG, Wei LI, Chen WU

South Power Sys Technol ›› 2016, Vol. 10 ›› Issue (7) : 17-23.

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South Power Sys Technol ›› 2016, Vol. 10 ›› Issue (7) : 17-23. DOI: 10.13648/j.cnki.issn1674-0629.2016.07.004
System Analysis & Operation

Frequency Characteristics of Yunnan Power Grid and Corresponding Over-Frequency Generator Tripping Scheme After Asynchronous Interconnection

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Abstract

Frequency stability will become the main security risk of Yunnan Power Grid as multi-DC sending end with small load and large sending-power after the asynchronous interconnection with CSG. The influences of load model and governor parameters on frequency characteristics are investgated. The principle of coordination and optimization of over-requency generator tripping are proposed. Based on the simulation and analysis of 4 alternative schemes, the over-frequency generator tripping scheme is proposed for Yunnan Power Grid to meet the requirements of asynchronous interconnection.

Key words

asynchronous interconnection / multi-DC blocking / frequency characteristic / over-frequency generator tripping

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Lei ZHOU , Dan ZHANG , Fusuo LIU , et al . Frequency Characteristics of Yunnan Power Grid and Corresponding Over-Frequency Generator Tripping Scheme After Asynchronous Interconnection[J]. Southern Power System Technology. 2016, 10(7): 17-23 https://doi.org/10.13648/j.cnki.issn1674-0629.2016.07.004

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