Reliability evaluation of restructured power systems using a novel optimal power-flow-based approach

• Published in: IET generation, transmission & distribution Vol. 7; no. 2; pp. 192 - 199
• Main Authors: Mehrtash, Amir, Wang, Peng, Goel, Lalit
• Format: Journal Article
• Language: English
• Published: Stevenage The Institution of Engineering and Technology 01.02.2013; Institution of Engineering and Technology; The Institution of Engineering & Technology
• Subjects: AC generators; Allocations; Applied sciences; Company structure; Customers; Electrical engineering. Electrical power engineering; Electrical power engineering; Equivalence; Exact sciences and technology; generation‐transmission system; load flow; load point reliability; Miscellaneous; modified optimal power flow; multistate models; Operation. Load control. Reliability; optimal load allocation plan; optimal power‐flow‐based approach; Optimization; power generation planning; power generation reliability; Power networks and lines; power system component segregation; power system operation; power system planning; power transmission planning; power transmission reliability; reliability evaluation process; Renewable energy; renewable energy resource penetration; renewable energy resource uncertainty; renewable generators; restructured power systems; Roy Billinton test system; Segregations; Systems planning; power system planning; Roy Billinton test system; power generation reliability; power generation planning; power system operation; optimal load allocation plan; renewable energy resource penetration; renewable energy resource uncertainty; optimal power-flow-based approach; multistate models; AC generators; restructured power systems; reliability evaluation process; modified optimal power flow; load point reliability; generation-transmission system; power system component segregation; power transmission planning; renewable generators; load flow; power transmission reliability; Segregation; Clientele; Power system planning; Restructuration; Forecasting management; Renewable energy sources; Electrical network analysis; Energy characteristic; Optimal power flow; Electrical network; Optimal allocation; Equivalent circuit; Reliability
• ISSN: 1751-8687; 1751-8695
• DOI: 10.1049/iet-gtd.2011.0655

Power system planning and operation has been considerably affected by restructuring of power systems and high penetration of renewable energy resources. In the new environment, customers are at the centre of attention and their concerns need to be addressed properly. The conventional techniques are not usually able to address both segregation of power system components and uncertainty of renewable energy resources. A novel technique is proposed in this study to determine load point reliability in restructured power systems considering the effect of renewable generators. This technique is based on modified optimal power flow and represents generation and transmission system with their equivalent multistate models and investigates the effect of each one on the load point reliability, separately. Furthermore, this approach remarkably relieves the reliability evaluation process, especially when loads and generations are subject to changes in the power system. The proposed method can assist the planners in reaching an optimal load allocation plan by providing valuable information. The proposed approach is applied to the Roy Billinton test system to illustrate the applications and advantages of the new approach.