Optimal reactive power control in a converter station during low‐power operation of HVDC

Autor: Wei Yan, Tao Wang, Youbin Zhou, Wang Hao, Jingshan Mo, Fan Xiao
Rok vydání: 2019
Předmět:
converter transformer
optimisation
Computer science
020209 energy
Energy Engineering and Power Technology
02 engineering and technology
power grid
HVDC power convertors
low-power operation
high-voltage DC system
law.invention
on load tap changers
optimal control
reactive power control
power transmission control
Control theory
law
0202 electrical engineering
electronic engineering
information engineering
Power grid
static reactive power optimisation model
Transformer
reactive power
converter station
HVDC
adjustment
voltage control
General Engineering
HVDC power transmission
surplus reactive power
AC power
power grids
Optimal control
reactive power consumption
Tap changer
Safe operation
lcsh:TA1-2040
Reactive power control
low-power transmission
safe operation
stable operation
optimal reactive power control
lcsh:Engineering (General). Civil engineering (General)
Software
Zdroj: The Journal of Engineering (2019)
ISSN: 2051-3305
DOI: 10.1049/joe.2018.8591
Popis: When the high-voltage DC (HVDC) system is operated in low-power transmission, the overplus of reactive power provided by AC filters may still exist apart from satisfying the need of the converter station, restricted by the minimum number of filter banks. This will lead to a large number of surplus reactive power into AC system, affecting the safe and stable operation of power grid. Here, the impacts of the adjustment of on-load tap changer of converter transformer and the adjustment of control angle of the converter station on reactive power consumption are analysed. Taking effects on the adjustment of control devices and the interchange of reactive power into account, a static reactive power optimisation model based on the actual control strategy of reactive power in a converter station is set up, which provides theoretical basis for an optimal control during low-power operation. Taking Tian-Guang HVDC project as an example, the simulation results verify its effectiveness of the proposed method.
Databáze: OpenAIRE
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