Abstract
Problem statement: High voltage direct current transmission line system has been widely applied for control power flow in power system. The power flow analysis was the one of powerful tools by which the power system equipped was analyzed both for planning and operation strategies. Approach: This study presented the method to analyze power flow of power system consisted of HVDC system. HVDC was modeled as the complex power injections. The presented complex power injected was incorporated into the existing power flow program based on fast decoupled method. The presented method was tested on the multimachine power system. Results: The transmission line loss of the system with and without HVDC was compared. Conclusion: From the simulation results, the HVDC can reduce transmission line loss of power system.
Highlights
High Voltage Direct Current (HVDC) transmission line system is getting more and more popular because of lower investment cost in long distance, lower losses, asynchronous interconnection between power systems, better controllable power flow compared with Alternating Current (AC) system (Al-Abdulaziz at al., 2006; Lu et al, 2006; Sun et al, 2008)
The objective of power flow analysis of the system equipped with HVDC system is to solve operating point both AC and HVDC system
This study presents the power flow analysis of power system equipped with HVDC system
Summary
High Voltage Direct Current (HVDC) transmission line system is getting more and more popular because of lower investment cost in long distance, lower losses, asynchronous interconnection between power systems, better controllable power flow compared with Alternating Current (AC) system (Al-Abdulaziz at al., 2006; Lu et al, 2006; Sun et al, 2008). The objective of power flow analysis of the system equipped with HVDC system is to solve operating point both AC and HVDC system. In the performing power flow calculation of AC system on the nodal iterative method, two AC variables are specified while the remaining two AC variables are solved iteratively. There are many methods of power flow analysis (Parry and Gangatharan, 2005; Federico, 2009). The fast decoupled power flow provides rapid solution for power system with low resistance and susceptance ratio (Avakian at al., 2006). This study presents the power flow analysis of power system equipped with HVDC system. The presented mathematical model of HVDC system is incorporated into AC power flow analysis based on fast decoupled method. The simulation results are tested on multimachine system and compared with various cases
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