Cascading outage preventive control for large-scale AC-DC interconnected power grid

Author

Rui Yao ; Xuemin Zhang ; Shaowei Huang ; Shengwei Mei ; Zhen´an Zhang ; Xiaomeng Li ; Quansheng Zhu

Author_Institution

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

fYear

2014

fDate

27-31 July 2014

Firstpage

1

Lastpage

5

Abstract

This paper presents a preventive control method lowering cascading outage risk in large-scale AC-DC interconnected power grids. The method consists of two steps. Firstly the possible cascading outages are simulated using fast dynamics of OPA model. Then, a cascading outage risk based security OPF (COR-SOPF) is proposed, which minimizes overall load power outage risk of cascading outages. In COR-SOPF model, the risk of cascading outage is estimated using the data obtained from cascading outage simulation and risk assessment. The risk in this model is load outage power, its physical meaning is clear. The preventive control can notably lower the cascading outage risk. Effectiveness and practicality are verified by IEEE-118 equivalent system and China provincial system cases.

Keywords

load flow control; power grids; power system interconnection; power system reliability; preventive maintenance; risk management; COR-SOPF model; China provincial system cases; IEEE-118 equivalent system; OPA model; cascading outage risk based security OPF; cascading outage simulation; large-scale AC-DC interconnected power grids; load outage power; overall load power outage risk; preventive control method; risk assessment; HVDC transmission; Load flow; Load modeling; Power grids; Power system faults; Risk management; Cascading outage risk; load rate; optimal power flow; preventive control;

fLanguage

English

Publisher

ieee

Conference_Titel

PES General Meeting | Conference & Exposition, 2014 IEEE

Conference_Location

National Harbor, MD

Type

conf

DOI

10.1109/PESGM.2014.6938970

Filename

6938970