Control strategy of on-load tap-changer based on digital substation

Author

Zhang, H. ; He, J.H. ; Bo, Z. ; Klimek, A.

Author_Institution

Beijing Jiaotong Univ., Beijing, China

fYear

2009

fDate

26-30 Oct. 2009

Firstpage

1

Lastpage

4

Abstract

Voltage stability is one of the aspects of the power system stability. Since regulating transformers are more and more used in modern power system, tap change has often been considered as a principal mechanism that may lead to voltage collapse, but tap change can also rescue a would-be collapse system by extending the power transfer limit. Using time domain medium-and-long term voltage stability simulation program, the influence of the action of on-load tap-changer (OLTC) on voltage stability is analyzed. The development of its high-speed communication network in real-time system and the implementation of the IEC61850 standard have made the construction of digital substations possible. Based on digital substation system, the strategies of OLTC control is given which can improve the power system stability.

Keywords

IEC standards; on load tap changers; power system stability; substations; IEC61850 standard; control strategy; digital substation; onload tap changer; power system stability; power transfer limit; time domain medium-and-long term voltage stability simulation program; Analytical models; Communication networks; Power system simulation; Power system stability; Real time systems; Stability analysis; Substations; Time domain analysis; Transformers; Voltage; Communication system; Digital substation; OLTC; Voltage stability;

fLanguage

English

Publisher

ieee

Conference_Titel

Transmission & Distribution Conference & Exposition: Asia and Pacific, 2009

Conference_Location

Seoul

Print_ISBN

978-1-4244-5230-9

Electronic_ISBN

978-1-4244-5230-9

Type

conf

DOI

10.1109/TD-ASIA.2009.5356914

Filename

5356914