Reactive Power and AC Voltage Control of LCC HVDC System With Controllable Capacitors

Abstract

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Review of Middle East energy interconnection development

“…In [69,70], a new approach was proposed to eliminate the commutation failure and provide fast dynamic reactive power/voltage control. In order to eliminate the commutation failure, a novel hybrid converter configuration for conventional LCC HVDC technology is proposed in [69].…”

“…In order to eliminate the commutation failure, a novel hybrid converter configuration for conventional LCC HVDC technology is proposed in [69]. Additionally, the control of AC voltage and reactive power in LCC HVDC system is investigated in [70] and a new control scheme is proposed, which makes the application of LCC HVDC system more flexible. LCC HVDC is preferred for power transmission over long distance transmission, the VSC HVDC system in [66,67] shows that it may be the preferred option for multi-terminal DC grid or offshore wind farm integration.…”

Modeling and Analysis of an LCC HVDC System Using DC Voltage Control to Improve Transient Response and Short-Term Power Transfer Capability

“…Overcurrent is somewhat detrimental to DC lines and converters and hence DC current is normally limited to the rated value. Recently, adjustment of the DC voltage directly has been proposed to regulate the reactive power of the LCC HVDC system in coordination with shunt capacitors [15]; however, that study focused only on reactive power, and additional IGBT-based switches were required to implement the control scheme.…”

Investigating the Influence of Different Types of Nanoparticles on Thermal and Dielectric Properties of Insulation in Converter Transformer

“…In recent years, the utilization of an HVDC system is becoming an inevitable trend with the developments in the worldwide power industry and improvements in voltage levels [1][2][3]. Meanwhile, oil-paper insulation has been widely used in converter transformers as well as HVDC bushings, and its safety is closely related to the security of large power transformers even the entire grid.…”