Abstract
Power losses in a distribution network accounts for a major part of energy loss in the overall system. Reduction in power losses can make the power system more energy efficient. This paper analyzes the reactive power support capabilities of Solid-State Transformer (SST) by adopting controls on both sides of SST. Moreover, a Moth swarm algorithm is used for selecting the optimal values of phase angles and modulation coefficients of the Voltage Source Converters (VSCs) on both sides of SST. Results show superior performance of the presented reactive power management scheme in terms of voltage violation and power loss of the system. Moreover, bidirectional power flow enables flexible operation of renewable energy sources (RES). Finally, the performance of the control scheme and optimization algorithm is tested on a modified IEEE 33-bus system using MATLAB.
Highlights
Power losses in a distribution network accounts supply reactive power compensation OTLCs require shunt for a major part of energy loss in the overall system
Considering all the discussed gaps in research, this paper proposes the reactive power management solution based on Solid-State Transformer (SST) using Moth swarm algorithm (MSA)
The performance of the presented reactive power management technique is analyzed using IEEE 33-bus distribution system presented with exceptions of micro turbines and storage batteries, the modified distribution system is shown in the Fig. 7 [28]
Summary
Both of the converters work on the principle of Pulse Width Modulation (PWM). Vdc are the voltage at the DC-Link between converters and C1, C2, δ1, δ2 are the coefficients of modulation and the phase angles on the either ends of the converters Control adopted on both sides of SST can be represented by the equations (1-4). The 24-hours irradiance pattern can be seen in the Fig. 3
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