Reallocating-damping theory of PSS and HVDC modulation

Author

Zhao, Shanshan ; Lin, Li ; Tao, Xiangyu ; Yin, Younghua

Author_Institution

Key Lab. of Power Syst. Protection & Dynamic Security Monitoring & Control, North China Electr. Power Univ., Beijing

fYear

2007

fDate

3-6 Dec. 2007

Firstpage

564

Lastpage

568

Abstract

In an AC/DC large-scale interconnection power grid, there are many problems to be solved. Among these, small- signal stability is extremely important. In this paper, based on the reallocating -damping theory of PSS, reallocating-damping theory of HVDC modulation is proposed, that variation of gain of HVDC modulation doesn´t influence the system general damping. It is also proved that reallocating-damping theory unifies PSS and HVDC modulation, which are both damping control measures. Mathematics deduction is given in detail. The possible negative effect caused by PSS and HVDC modulation is analyzed. A number of cases are tested such as a 12-generator system, 2DC system and a real power system.

Keywords

HVDC power transmission; damping; power grids; power system interconnection; power system stability; AC-DC large-scale interconnection power grid; HVDC modulation; PSS; power system stabilizer; reallocating-damping theory; Cause effect analysis; Damping; HVDC transmission; Large-scale systems; Mathematics; Power grids; Power system analysis computing; Power system interconnection; Power system stability; System testing; AC/DC hybrid grid; HVDC modulation; PSS; damping characteristics; low frequency oscillation; reallocating-damping theory;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Engineering Conference, 2007. IPEC 2007. International

Conference_Location

Singapore

Print_ISBN

978-981-05-9423-7

Type

conf

Filename

4510092