Receiving end layered access UHVDC low-load reactive power control method and control device

Receiving end layered access UHVDC low-load reactive power control method and control device

The invention discloses a receiving end layered access UHVDC low-load reactive power control method and control device for achieving independent control of reactive power of two AC grids at a receiving end in a receiving end layered access UHVDC system low-load operation mode. In the bipolar layer c...

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Hauptverfasser: SHI QIAOMING, CUI YONG, BAO WEI, ZHANG QINGWU, XU BIN, WANG YONGPING, LIU KAI, SU JIACAI
Format: Patent
Sprache:chi ; eng
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CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER
CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
ELECTRICITY
GENERATION
SYSTEMS FOR STORING ELECTRIC ENERGY
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creator SHI QIAOMING
CUI YONG
BAO WEI
ZHANG QINGWU
XU BIN
WANG YONGPING
LIU KAI
SU JIACAI
description The invention discloses a receiving end layered access UHVDC low-load reactive power control method and control device for achieving independent control of reactive power of two AC grids at a receiving end in a receiving end layered access UHVDC system low-load operation mode. In the bipolar layer control, reactive power exchange values of AC/DC systems in the two AC grids at the receiving end aredetected in real time and are sent as feedback values respectively to two independent low-load reactive power controllers, and trigger angle or extinction angle reference values for controlling the reactive power loss of high-end and low-end valve groups are respectively calculated. In the converter layer control, the independent control of the reactive power loss of the high-end and low-end valve groups is realized through the coordinated control of converter tapped control, converter trigger control and valve group voltage-sharing control. This technical scheme not only can realize the independent control of AC and
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subjects CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER
CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
ELECTRICITY
GENERATION
SYSTEMS FOR STORING ELECTRIC ENERGY
title Receiving end layered access UHVDC low-load reactive power control method and control device
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