Optimum schedule and size of BESS in the low voltage network with high penetration of solar rooftops to maintain voltages within acceptable limit

2017 ◽  
Author(s):  
Anh Thi Nguyen ◽  
Surachai Chaitusaney
Keyword(s):  
Low Voltage ◽  
Acceptable Limit ◽  
Optimum Schedule ◽  
High Penetration

scholarly journals Aggregation of Radial Distribution System Bus with Volt-Var Control

Energies ◽  
2021 ◽  
Vol 14 (17) ◽  
pp. 5390
Author(s):  
Hiroshi Kikusato ◽  
Taha Selim Ustun ◽  
Dai Orihara ◽  
Jun Hashimoto ◽  
Kenji Otani
Keyword(s):  
Distribution System ◽  
Model Building ◽  
Historical Data ◽  
Low Voltage ◽  
Computational Time ◽  
Radial Distribution System ◽  
High Penetration ◽  
Reduction Methods ◽  
Aggregated Model ◽  
The Impact

The high penetration of the distributed energy resources (DERs) encourages themselves to implement grid-supporting functions, such as volt-var control. The quasi-static time-series (QSTS) simulation is an essential technique to evaluate the impact of active DERs on the grid. Meanwhile, the increase of complexity on the circuit model causes a heavy computational burden of QSTS simulation. Although circuit reduction methods have been proposed, there have been few methods that can appropriately handle the distribution system (DS) with multiple voltage control devices, such as DERs implementing volt-var control. To address the remaining issues, this paper proposes an offline bus aggregation method for DS with volt-var control. The method determines the volt-var curve for the aggregated bus on the basis of historical data to reduce error in the aggregated model, and its offline process solves the computational convergence issue concerned in the online one. The effectiveness of the proposed method is validated in the simulation using a Japanese low-voltage DS model. The simulation results show that the proposed method can reduce the voltage error and computational time. Furthermore, the versatility of the proposed method is verified to show the performance does not heavily depend on how to select historical data for model-building.

scholarly journals Voltage regulation in LV distribution networks with PV generation and battery storage

2021 ◽  
Vol 72 (6) ◽  
pp. 356-365
Author(s):  
Jordan Radosavljević
Keyword(s):  
Low Voltage ◽  
Voltage Control ◽  
Distribution Networks ◽  
Voltage Regulation ◽  
Local Load ◽  
Battery Storage ◽  
Second Stage ◽  
High Penetration ◽  
Optimal Coordination ◽  
Pv Generation

Abstract High penetration of photovoltaic (PV) generation in low voltage (LV) distribution networks can leads some power quality problems. One of the most important issues in this regard is the impermissible voltage deviation in periods with a large imbalance between PV generation and local load consumption. Accordingly, many authors deal with this issue. This work investigates voltage regulation for LV distribution networks equipped with the hybrid distribution transformer (HDT), and with high penetration of PV units. A two-stage algorithm for voltage regulation is proposed. In the first stage, a local (distributed) voltage control is performed by minimizing the injection power of the PV-battery storage system (BS)-local load entity at the common bus. In the second stage, optimal coordination is performed between the HDT and the local voltage control. In fact, the second stage is an optimal voltage regulation problem. The aim is to minimize the voltage deviations at load buses by optimal settings the voltage support of the HDT. A PSO algorithm is used to solve this optimization problem. the proposed approach is implemented in MATLAB software and evaluated on the IEEE european LV test feeder.

Analysis of high penetration of electric vehicles and photovoltaics on a greek low-voltage network

2017 ◽  
Author(s):  
Aggelos S. Bouhouras ◽  
Alexandras Athanasiou ◽  
Georgios C. Christoforidis ◽  
Anastasios Tsiakalos ◽  
Manos Roumeliotis
Keyword(s):  
Electric Vehicles ◽  
Low Voltage ◽  
High Penetration
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