Security-constrained economic dispatch exploiting the operational flexibility of transmission networks

2022 ◽  
Vol 138 ◽  
pp. 107914
Author(s):  
Lei You ◽  
Hui Ma ◽  
Tapan Kumar Saha ◽  
Gang Liu
Keyword(s):  
Economic Dispatch ◽  
Operational Flexibility ◽  
Transmission Networks

scholarly journals Risk-Limiting Real-Time Economic Dispatch in a Power System with Flexibility Resources

Energies ◽  
2019 ◽  
Vol 12 (16) ◽  
pp. 3133 ◽  
Author(s):  
Hongji Lin ◽  
Chongyu Wang ◽  
Fushuan Wen ◽  
Chung-Li Tseng ◽  
Jiahua Hu ◽  
...  
Keyword(s):  
Power System ◽  
Real Time ◽  
Value At Risk ◽  
Renewable Energy Sources ◽  
Economic Dispatch ◽  
Conditional Value At Risk ◽  
Operational Flexibility ◽  
Practical Applications ◽  
Start Up ◽  
The Impact

The integration of numerous intermittent renewable energy sources (IRESs) poses challenges to the power supply-demand balance due to the inherent intermittent and uncertain power outputs of IRESs, which requires higher operational flexibility of the power system. The deployment of flexible ramping products (FRPs) provides a new alternative to accommodate the high penetration of IRESs. Given this background, a bi-level risk-limiting real-time unit commitment/real-time economic dispatch model considering FRPs provided by different flexibility resources is proposed. In the proposed model, the objective is to maximize the social surplus while minimizing the operational risk, quantified using the concept of conditional value-at-risk (CVaR). Energy and ramping capabilities of conventional generating units during the start-up or shut-down processes are considered, while meeting the constraints including unit start-up/shut-down trajectories and ramping up/down rates in consecutive time periods. The Karush–Kuhn–Tucker (KKT) optimality conditions are then used to convert the bi-level programming problem into a single-level one, which can be directly solved after linearization. The modified IEEE 14-bus power system is employed to demonstrate the proposed method, and the role of FRPs in enhancing the system flexibility and improving the accommodation capability for IRESs is illustrated in some operation scenarios of the sample system. The impact of the confidence level in CVaR on the system operational flexibility is also investigated through case studies. Finally, a case study is conducted on a regional power system in Guangdong Province, China to demonstrate the potential of the proposed method for practical applications.

Using the ARTIST approach for diagnosing power transmission networks

1994 ◽  
Vol 3 (3) ◽  
pp. 125 ◽  
Author(s):  
R. Leitch ◽  
H. Freitag ◽  
A. Stefanini ◽  
G. Tornielli
Keyword(s):  
Power Transmission ◽  
Transmission Networks ◽  
Power Transmission Networks

Strategic Market Entry and Operational Flexibility in Oligopoly

2012 ◽  
Author(s):  
Benoit Chevalier-Roignant ◽  
Christoph M. Flath ◽  
Lenos Trigeorgis
Keyword(s):  
Market Entry ◽  
Operational Flexibility ◽  
Strategic Market

Electricity Generation with Looped Transmission Networks: Bidding to an Iso

2007 ◽  
Author(s):  
Xinmin Hu ◽  
Daniel Ralph ◽  
Eric Kodjo Ralph ◽  
Peter Bardsley ◽  
Michael C. Ferris
Keyword(s):  
Electricity Generation ◽  
Transmission Networks
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