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Development and Field Test of Voltage VAR Optimization in the Korean Smart Distribution Management System
Korea Electric Power Research Institute (KEPRI), Korea Electric Power Corporation (KEPCO), 105 Munji-Ro, Yuseong-Gu, Deajeon 305-760, Korea
Department of Electrical and Computer Engineering, Seoul National University, Gwanak-ro, Gwanak-gu, Seoul 151-744, Korea
Department of Electrical Engineering, Chonnam National University, Gwangju 500-757, Korea
* Author to whom correspondence should be addressed.
Received: 11 November 2013; in revised form: 9 January 2014 / Accepted: 24 January 2014 / Published: 10 February 2014
Abstract: This paper is a summary of the development and demonstration of an optimization program, voltage VAR optimization (VVO), in the Korean Smart Distribution Management System (KSDMS). KSDMS was developed to address the lack of receptivity of distributed generators (DGs), standardization and compatibility, and manual failure recovery in the existing Korean automated distribution system. Focusing on the lack of receptivity of DGs, we developed a real-time system analysis and control program. The KSDMS VVO enhances manual system operation of the existing distribution system and provides a solution with all control equipment operated at a system level. The developed VVO is an optimal power flow (OPF) method that resolves violations, minimizes switching costs, and minimizes loss, and its function can vary depending on the operator’s command. The sequential mixed integer linear programming (SMILP) method was adopted to find the solution of the OPF. We tested the precision of the proposed VVO on selected simulated systems and its applicability to actual systems at two substations on the Jeju Island. Running the KSDMS VVO on a regular basis improved system stability, and it also raised no issues regarding its applicability to actual systems.
Keywords: voltage VAR control; optimal power flow (OPF); distribution management system (DMS); dispersed generator; distribution network analysis; linear programming; distribution automation system; optimal method
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Yun, S.-Y.; Hwang, P.-I.; Moon, S.-I.; Kwon, S.-C.; Song, I.-K.; Choi, J.-H. Development and Field Test of Voltage VAR Optimization in the Korean Smart Distribution Management System. Energies 2014, 7, 643-669.
Yun S-Y, Hwang P-I, Moon S-I, Kwon S-C, Song I-K, Choi J-H. Development and Field Test of Voltage VAR Optimization in the Korean Smart Distribution Management System. Energies. 2014; 7(2):643-669.
Yun, Sang-Yun; Hwang, Pyeong-Ik; Moon, Seung-Il; Kwon, Seong-Chul; Song, Il-Keun; Choi, Joon-Ho. 2014. "Development and Field Test of Voltage VAR Optimization in the Korean Smart Distribution Management System." Energies 7, no. 2: 643-669.