Coordinated control of distributed generation system with improved generalised enhanced phase locked loop control algorithm

• Published in: IET generation, transmission & distribution Vol. 13; no. 11; pp. 2055 - 2062
• Main Authors: Kewat, Seema, Singh, Bhim
• Format: Journal Article
• Language: English
• Published: The Institution of Engineering and Technology 04.06.2019
• Subjects: active power flow regulation; battery protection control; battery SOC; battery state‐of‐charge; battery storage plants; coordinated control; DC‐offset component; distributed energy resources; distributed generation system; distributed power generation; fast dynamic response; harmonics mitigation; high impulsive noise; improved generalised enhanced phase locked loop control algorithm; improved generalised filter algorithm; limited power point tracking; load balancing; load flow control; low steady‐state error; LPPT control; maximum power point trackers; phase locked loops; photovoltaic power systems; power conversion harmonics; power generation control; power generation reduction; power harmonic filters; power quality improvement; power supply quality; PV array characteristic; reactive power compensation; reactive power control; solar maximum power point tracking; solar MPPT control; solar power stations; solar PV array; Special Issue: Emerging Technologies for Virtual Power Plant and Microgrid; voltage source converter control; voltage source operating region; voltage‐source convertors; VSC control algorithm; active power flow regulation; power quality improvement; power generation reduction; load balancing; battery protection control; power generation control; power harmonic filters; distributed generation system; distributed power generation; reactive power compensation; solar MPPT control; phase locked loops; coordinated control; solar PV array; battery SOC; battery state-of-charge; DC-offset component; improved generalised enhanced phase locked loop control algorithm; PV array characteristic; limited power point tracking; solar power stations; fast dynamic response; improved generalised filter algorithm; low steady-state error; photovoltaic power systems; distributed energy resources; voltage source converter control; power conversion harmonics; VSC control algorithm; high impulsive noise; power supply quality; maximum power point trackers; load flow control; voltage-source convertors; solar maximum power point tracking; voltage source operating region; reactive power control; battery storage plants; harmonics mitigation; LPPT control
• ISSN: 1751-8687; 1751-8695
• DOI: 10.1049/iet-gtd.2018.5336

Here, a distributed generation system (DGS) is proposed that allows the different distributed energy resources to operate in coordination with others to provide the electricity in rural areas. Two individual controls are used in the DGS: (i) solar maximum power point tracking (MPPT) and the battery protection control, and (ii) voltage source converter (VSC) control. The proposed VSC control algorithm is based on an improved generalised filter algorithm for power quality improvement of the DGS. This control strategy effectively regulates the active power flow and provides the harmonics mitigation, reactive power compensation, and load balancing in the DGS with low steady-state error and fast dynamic response under high impulsive noise with DC-offset component. The solar MPPT control is designed on the basis of battery state of charge (SOC). In this control, the solar PV array operates in limited power point tracking (LPPT) after the storage battery surpasses the maximum SOC limit. In LPPT control, the solar PV MPPT operates in the voltage source operating region of PV array characteristic, thereby, reducing the power generation and avoids the overcharging of the storage battery. The proposed DGS performance is validated through test results under dynamics and steady-state conditions.