Effects of Sudden Increase of Dynamic Loads on the Voltage Stability of South China Power Grid and Solutions with STATCOM Application

Author

Hu Ai-jun ; Cui, Wen-Jin

Author_Institution

Dept. of Electr. Eng., Tsinghua Univ., Beijing

fYear

2005

fDate

2005

Firstpage

1

Lastpage

6

Abstract

The securities of large load centers are increasingly threatened by the problem of transient voltage stability, which happened frequently recent years in many countries. One of the most important scenarios causing voltage instability and voltage collapse is the sudden increase of large numbers of dynamic loads. This paper presents the detail model of the sudden loads, employing time-domain simulation method to assess the effect on South China power grid using NETOMAC programme. The digital simulation results show that the voltage may collapse or recovery too slowly in the conditions of sudden increase of dynamic loads. Dynamic reactive power compensation is needed, and STATCOM is efficient to stabilize the voltages without load shedding

Keywords

digital simulation; power grids; power system dynamic stability; power system simulation; power system transient stability; static VAr compensators; NETOMAC programme; STATCOM application; South China power grid; digital simulation; dynamic load; dynamic reactive power compensation; time-domain simulation; transient voltage stability; voltage collapse; Automatic voltage control; Capacitors; HVDC transmission; Power grids; Power system dynamics; Power system stability; Power system transients; Reactive power; Security; Time domain analysis; STATCOM; Sudden Increase of Dynamic Loads; Transient Voltage Stability;

fLanguage

English

Publisher

ieee

Conference_Titel

Transmission and Distribution Conference and Exhibition: Asia and Pacific, 2005 IEEE/PES

Conference_Location

Dalian

Print_ISBN

0-7803-9114-4

Type

conf

DOI

10.1109/TDC.2005.1546922

Filename

1546922