Browse Conferences
Research on optimization of valve hall grounding switches configuration in ±1100KV UHVDC converter station
According to the design scheme of the Zhundong-Wannan ±1100kV power transmission project built this year, there are 24 grounding switches (GS) configured in the valve hall to ensure safety when maintenance. A huge investment is required due...
Review of three types of oscillations between wind farms and other power system components
This paper reviews three types of oscillations between wind farms and other power system components including a series-compensated line, a Voltage-Sourced-Converter based High Voltage DC Transmission (VSC-HVDC) system and other devices in t...
STATCOM control scheme for solving problems of Power and T&D systems
Recently, a power plant such as a thermal power station tends to be built in a remote location and the transmission distance becomes longer. Hydro power plants are built in an intermountain region. Since they are quite away from an urban ar...
HV submodule technology based on press pack IGBT for largest scale VSC-HVDC application
In the last five year Power rating of VSC-HVDC application has dramatically increased in Voltage and Current. Higher and higher rating is also driven by increasing interest to apply VSC-HVDC in large scale B2B and in overhead line transmiss...
A real-time simulator capable of studying dynamic insulation coordinate in a MMC-HVDC system
When the requirement to perform dynamic insulation coordinate on a real-time simulator has recently surfaced in the design cycle of MMC-HVDC systems, accurate real-time simulation models for surge arrestors and MMC are of great importance t...
Investigation on simulation method of gaps discharge characteristic under forest fire conditions
The insulation of transmission lines phase-ground and phase-phase air gaps decrease significantly under forest fire condition, which causing transmission lines trip and threatening the operation safety of EHV and UHV transmission lines. In ...
Study on frequency oscillation controlling strategies for islanded operation mode of HVDC transmission systems
Islanded operation mode of HVDC sending terminal is the condition that generators are only connected to DC system, disconnected with main AC networks. When disturbed, an islanded system is more prone to be frequency instable than a connecte...
Secondary arc characteristics and single-phase autoreclosure scheme of UHV transmission line with hybrid reactive compensation
In order to study the secondary arc characteristics of single-phase transient fault in UHV transmission lines with hybrid reactive compensation, a transmission line electromagnetic coupling model is presented in this paper. Dynamic model of...
DC resonance suppression for hybrid double-ended HVDC transmission systems
In a high-voltage direct current (HVDC) transmission system, it is increasingly adopted to connect or replace a part of its traditional line commutated converters (LCCs) with modular multilevel converters (MMCs), forming a hybrid HVDC syste...
The influence of UHV hybrid reactive compensation and its stray capacitances on the interrupting characteristics of circuit breaker at out-of-phase fault
The hybrid reactive compensation is expected to be applied in UHV transmission lines in the future, and its mutual influence with power grid is urgent to be studied. Considering the influence of the ground stray capacitance of the series co...