A5001094243- HVDC Systems and Fault Protection
- High-Voltage Power Transmission Systems
- Power Systems Fault Detection
- Smart Grid and Power Systems
- Optimal Power Flow Distribution
- Power Systems and Technologies
- Silicon Carbide Semiconductor Technologies
- Electric Power System Optimization
Wuhan Institute of Technology
2021-2024
Huazhong University of Science and Technology
2014-2017
Current differential protection is the main of transmission lines which include multi-circuit on same tower, and whose sensitivity reliability mainly affected by distributed capacitive current. For four-circuit line due to influence coupling between loop road, capacitance current increases significantly when compared with ordinary lines, affecting protection, especially for different voltage levels throughout tower. The relationship electrostatic circuits more complex, difficulty...
The series capacitor compensation is one of the key technologies in EHV and UHV long distance power transmission lines. This paper analyzes operation characteristics main protection combined with engineering practice when line overcompensation due to system modified influence transition resistance mode on current differential protection. According simulation results, it presents countermeasure improving sensitivity
Current differential protection is the main of transmission lines including multi-circuit lines, whose sensitivity and reliability mainly affected by distributed capacitive current, especially with widespread application segment parallel relationship electrostatic coupling between circuits more complicated, which makes current compensation difficult. However, in paper both interphase are compensated for on lumped parameter Π equivalent circuit model, using PSACD Matlab simulation software,...
In order to study the changing characteristics of electrical variables during operation process UHVDC system with hierarchical connection AC system, using main circuit parameters Ximeng-Taizhou 800 kV transmission which has been put into and referring control CIGRE HVDC standard test simulation models converter, converter transformer, flat wave reactor, DC filter line project are established by PSCAD. The model is used simulate positive, negative bipolar full voltage mode, results compared...
Transmission planning is a complex optimization problem with multiple deciding variables and restrictions. The mathematical model non-linear, discrete, multi-objective dynamic. It becomes complicated as the system grows. So algorithm adopted affects results of directly. In this paper, fast non-dominated sorting genetic (NSGA-II) employed. indicate that NSGA-II has some advantages compared to traditional algorithms. transmission planning, feasible, flexible effective.