An original approach for load–frequency control—the winning solution in the Second UCTE Synchronous Zone

• Published in: Electric power systems research 2004-04, Vol.69 (1), p.59-68
• Main Author: Stojkovic, Branko
• Format: Article
• Language: English
• Subjects: Area control error (ACE); Control area (CA); Energy management system (EMS); Load–frequency control (LFC); SCADA; Secondary regulation
• ISSN: 0378-7796; 1873-2046
• DOI: 10.1016/j.epsr.2003.07.010

This paper describes a specific approach to resolving problem of load–frequency control (LFC) in the power system of Montenegro (Serbia and Montenegro). The complete LF controller was developed and implemented on the single PC computer. The extremely high “in-field” efficiency of the proposed method was achieved by compact design of the controller as well as by implementing algorithm for efficient control error filtering (comprising a PI-filter, too), algorithm for minimizing of regulating units movement and uniform regulating power allocation as well as feed-back algorithm for permanent adjustment of the tie-lines power measurements. Details on the above-mentioned algorithms are given. The entire LF controller as well as SCADA system that lies in its background, were developed, coded and implemented “from zero” by the Power Company’s staff in a fast, feasible and cost-effective manner. Finally, the last but the most important issue—official field results for the 2 months exploitation of the system were reported and analysed, which have confirmed the top regulating success in the Second UCTE Synchronous Zone.