Title :
Voltage Supporting Strength Evaluation Of The HVDC Receiving Grid In Synchronous And Asynchronous Interconnecting Power System
Author :
Su Yue-ping ; Guan Lin
Author_Institution :
Sch. of Electr. Power, South China Univ. of Technol., Guangzhou, China
Abstract :
This paper simulates the voltage sags caused by HVDC failures in both the asynchronous interconnecting and the AC/DC parallel power systems and studies their relationships with the short circuit ratio (SCR) series indices. It´s found that in the asynchronously interconnected power system the SCR indices can quantitatively indicate the voltage supporting ability of the receiving-end AC system under HVDC failures. However in the AC/DC parallel system the SCR indices are ineffective. An improved SCR index is then proposed to solve the problem. Simulations prove its feasibility in the AC/DC parallel power systems.
Keywords :
fault diagnosis; power grids; power supply quality; power system interconnection; AC-DC parallel power systems; HVDC receiving grid; asynchronous interconnecting power system; short circuit ratio series indices; synchronous interconnecting power system; voltage sags; voltage supporting strength evaluation; Circuit faults; HVDC transmission; Integrated circuit interconnections; Power grids; Power system faults; Power system interconnection; Power system modeling; Power system simulation; Thyristors; Voltage;
Conference_Titel :
Power and Energy Engineering Conference (APPEEC), 2010 Asia-Pacific
Conference_Location :
Chengdu
Print_ISBN :
978-1-4244-4812-8
Electronic_ISBN :
978-1-4244-4813-5
DOI :
10.1109/APPEEC.2010.5449452
