Abstract
Renewable distributed generation is increasingly deployed in distribution networks for meeting the rapidly-growing electricity demand and energy transition target. Its optimal integration could maximize the benefits in network operation and eliminate technical challenges to passive networks associated with its non-dispatchable generation characteristic. In this paper, various scenarios based on three different optimization strategies viz. i) distributed installation, ii) power factor and iii) network configuration are assessed. The optimization goals are minimizing active line losses and improving network voltage profile within the constraints. The analysis considers PV system integration, and the base configuration of centralized PV system installation is taken as the reference for comparison. Time-series load flow algorithm utilizing average PV system generation and load demand profiles is adopted in solving the multi-objective optimization problem with index weighting factors. A real 11 kV distribution network in Brunei is modeled as the test system and integrated with the scenario-based PV system. The variations in generation and demand are considered in the work. The findings present the opportunities in furthering network operation enhancement with the distributed installation strategy having the highest potential. The analysis provides a clear optimization potential of each scenario, which shall be beneficial to the utility in planning new deployment.
Highlights
The global electricity demand is growing at a rapid pace
The results proved that no limit violation is presented in the existing network under the normal operating condition
In this paper, time-series load flow algorithm considering the average PV system generation and load demand profiles has been utilized for examining the potentials of the three different optimization strategies distributed installation, power factor and network configuration, in optimizing the network operation through reducing the active line losses and enhancing the voltage profile of the distribution network in Brunei
Summary
Additional generation capacity is necessitated to be made available to cater the needs. The electricity sector is in the phase of energy transitioning towards a more sustainable way of operation. Within this context, the concept of distributed generation (DG) involving renewable energy (RE) technology such as solar photovoltaic (PV), wind and biomass is increasingly introduced as the alternative generation source in the electrical grid. Recognizing the RE target set in worldwide, a significant share of renewable DG in the electricity generation mix is foreseeable. Among the myriad of RE technologies available, the PV system has gained wide interests and a rising uptake due to its continuous price reduction and technological advancement [1]. The utilization of free and abundant solar insolation as its input and the features of carbon-free, minimal maintenance and noiseless operation make the PV system a preferred choice of DG
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