Exploration on LVRT of Coal Feeder in Thermal Power Plants

doi:10.11930/j.issn.1004-9649.2014.2.18.4

Abstract

Abstract: The paper discusses the generator shutdown events caused by coal feeder outage in instant power-off. The coal feeder outage happens either when the power supply voltage of coal feeder control circuit is lower than 310 V, or when the power voltage of coal feeder itself is below 210 V. Once the coal feeders are triggered off, the generating units are forced to stop running. Therefore, two solutions including improving the reliability of the power supply and modifying the control logics are proposed. The latter is recommended through comparison.

Key words: low voltage ride-through (LVRT), coal feeder, control strategy

CLC Number:

TK223.24

YUE Jian-hua, BI Chun-hai, YUE Tao. Exploration on LVRT of Coal Feeder in Thermal Power Plants[J]. Electric Power, 2014, 47(2): 18-22.

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URL: https://www.electricpower.com.cn/EN/10.11930/j.issn.1004-9649.2014.2.18.4

https://www.electricpower.com.cn/EN/Y2014/V47/I2/18

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Exploration on LVRT of Coal Feeder in Thermal Power Plants

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