TITLE:
Emergency Control Strategy Based on Multi-agent Theory under Blackout
AUTHORS:
Bin Sun, Ming Liu, Luofang Zhu, Nian Liu, Xiaoyan Qiu, Zhe Zhuang
KEYWORDS:
Multi-agent; Corrected Transient Energy Function; Emergency Control; Stability Margin
JOURNAL NAME:
Energy and Power Engineering,
Vol.5 No.4B,
November
7,
2013
ABSTRACT: The multi-agent theory is
introduced and applied in the way to strike the control amount of emergency
control according to stability margin, based on which an emergency control
strategy of the power system is presented. The multi-agent control structure
which is put forward in this article has three layers: system agent, areal
agent and local agents. System agent sends controlling execution signal to the
load-local agent according to the position and the amount of load shedding
upload from areal agent; The areal agent judges whether the power system is
stable by monitoring and analyzing the maximum relative power angle. In the
condition of instability, determines the position of load-shedding, and the
optimal amount of load-shedding according to the stability margin based on the
corrected transient energy function, upload control amount to system agent;
local-generator agent is mainly used for real-time monitoring the power angle
of generator sets and uploading it to the areal agency, local-loads agent
control load by receiving the control signal from system agent. Simulations on
IEEE39 system show that the proposed control strategy improves the system
stability.