Optimal Operation Method for Distribution Systems Considering Distributed Generators Imparted with Reactive Power Incentive

• Main Authors: Ryuto Shigenobu, Mitsunaga Kinjo, Paras Mandal, Abdul Motin Howlader, Tomonobu Senjyu
• Format: Article
• Language: English
• Published: MDPI AG 2018-08-01
• Series: Applied Sciences
• Subjects: reactive power incentive; BESS; reactive power control; PSO; dual scheduling; renewable energy sources; distributed generator; distribution system
• Online Access: http://www.mdpi.com/2076-3417/8/8/1411

In order to solve urgent energy and environmental problems, it is essential to carry out high installation of distributed generation using renewable energy sources (RESs) and environmentally-friendly storage technologies. However, a high penetration of RESs usually leads to a conventional power system unreliability, instability and low power quality. Therefore, this paper proposes a reactive power control method based on the demand response (DR) program to achieve a safe, reliable and stable power system. This program does not enforce a change in the active power usage of the customer, but provides a reactive power incentive to customers who participate in the cooperative control of the distribution company (DisCo). Customers can achieve a reduction in their total energy purchase by gaining a reactive power incentive, whilst the DisCo can achieve a reduction of its total procurement of equipment and distribution losses. An optimal control schedule is calculated using the particle swarm optimization (PSO) method, and also in order to avoid over-control, a modified scheduling method that is a dual scheduling method has been adopted in this paper. The effectiveness of the proposed method was verified by numerical simulation. Then, simulation results have been analyzed by case studies.