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This paper presents the development of a generic active distribution network (ADN) operation simulation framework that incorporates selected swarm optimization algorithms (SOAs) for the purpose of reducing CO2 emissions and line loss minimization through network reconfiguration (NR). The framework has been implemented in the ADN of Taipower. Network data, provided by the Distribution Mapping Management System and Distribution Dispatch Control Center (DDCC) of Taipower, were converted into an OpenDSS script to create ADN models. The SOA is integrated into the framework and utilized to determine the statuses of both four-way and two-way switches in the planning and operating stages, in accordance with the proposed multi-objective function and operational constraints. The weightings for these decisions can be customized by distribution operators to meet their specific requirements. In this paper, the weighting for line loss reduction is set to one for minimizing CO2 emissions. The numerical results demonstrate that the proposed ADN framework can recommend a feeder switching scheme to distribution operators, aiming to balance feeder loading and minimize the neutral line current. Finally, this approach leads to reduced line losses and minimizes CO2 emissions. In contrast to relying solely on historical operational experience, this generic ADN reconfiguration framework offers a systematic approach that can significantly contribute to reducing CO2 emissions and enhancing the operational efficiency of ADNs. [ABSTRACT FROM AUTHOR]

With the growing penetration of distributed energy resources (DER), the accompanying challenges have led utilities to limit the hosting capacities of DER installations on distribution feeders. A distribution static synchronous compensator (DSTATCOM) is a power electronic device to provide dynamic injections and absorption of reactive power into the distribution grid with more flexible and reliable voltage control and power quality improvement. A distributed energy resources management system (DERMS) is developed to provide more effective control of a DSTATCOM that can help substantially increase hosting capacity and mitigate overvoltage problems with the existing feeder. A Taiwan power company's (Taipower) feeder is selected for computer simulation, and the DSTATCOM is employed in the test feeder to demonstrate the effectiveness of the DSTATCOM in improving the overvoltage problems. The voltage/reactive power (Volt/VAR) control of the DSTATCOM helps reduce overvoltage/voltage fluctuations as the DER output increases. [ABSTRACT FROM AUTHOR]

In recent years, the development of photovoltaic (PV) power generation has continued and its range of applications has also expanded to different fields. Many PV system designs now not only perform general power generation tasks, but also provide various functionalities such as harmonic mitigation, voltage/frequency regulation, and active/reactive power (P/Q) management. In this study, we develop a PV static synchronous compensator (PV-STATCOM) system with multimode control for the mitigation of voltage fluctuation caused by an industrial power system with the operation of an AC electric arc furnace (EAF) load. In order to well model some nonlinear facilities operated in the studied system and to effectively observe the voltage fluctuation trend, field measurements by power quality (PQ) recorders with voltage and current sensors are performed on a real steel plant that is fed from a 161 kV utility grid. The proposed multimode control strategy for the PV-STATCOM consists of a pure PV mode (PPM), partial STATCOM mode (PSM), and full STATCOM mode (FSM). The switching of various control modes is implemented under specific rules to ensure appropriate reactive power management in the PV inverter (PVI). Finally, the performance of the proposed PV-STATCOM design is tested and verified by MATLAB/Simulink. Results show that the proposed multimode PV-STATCOM has greater effectiveness than the traditional design. [ABSTRACT FROM AUTHOR]