A Study on the Coordination Control Algorithm of Step Voltage Regulator and Battery Energy Storage System for Voltage Regulation in Distribution System

Modular multilevel converter with integrated battery energy storage system (MMC-BESS) has been proposed for energy storage requirements in high-voltage applications. The state-of-charge (SOC) equilibrium of batteries is essential for BESS to guarantee the capacity utilization. However, submodule voltage regulation can lead to over-modulation of individual submodules, which will limit the efficiency of SOC balancing control. Focusing on this problem, a modified SOC balancing control method with high efficiency is proposed in this paper. The tolerance for battery power unbalance is defined to quantize the convergence of SOC balancing control. Both the DC component and AC component are considered while regulating submodule voltage. The linear programming method is introduced to realize the maximum tolerance for battery power unbalance in different operation modes. Based on the analysis, by choosing appropriate submodule voltage regulation method, the efficiency of SOC balancing control is improved greatly. In addition, the SOC controller is also optimally designed to avoid over-modulation of submodules. Finally, the detailed simulation and experiment results verify the effectiveness of the analysis and proposed control strategy.

Download Full-text

Implementation of Optimal Scheduling Algorithm for Multi-Functional Battery Energy Storage System

Energies ◽

10.3390/en12071339 ◽

2019 ◽

Vol 12 (7) ◽

pp. 1339 ◽

Cited By ~ 2

Author(s):

Hee-Jun Cha ◽

Sung-Eun Lee ◽

Dongjun Won

Keyword(s):

Energy Storage ◽

Electricity Market ◽

Distribution System ◽

Wind Farm ◽

Storage System ◽

Energy Storage System ◽

Optimal Scheduling ◽

Battery Energy Storage System ◽

Battery Energy Storage ◽

Battery Energy

Energy storage system (ESS) can play a positive role in the power system due to its ability to store, charge and discharge energy. Additionally, it can be installed in various capacities, so it can be used in the transmission and distribution system and even at home. In this paper, the proposed algorithm for economic optimal scheduling of ESS linked to transmission systems in the Korean electricity market is proposed and incorporated into the BESS (battery energy storage system) demonstration test center. The proposed algorithm considers the energy arbitrage operation through SMP (system marginal price) and operation considering the REC (renewable energy certification) weight of the connected wind farm and frequency regulation service. In addition, the proposed algorithm was developed so that the SOC (state-of-charge) of the ESS could be separated into two virtual SOCs to participate in different markets and generate revenue. The proposed algorithm was simulated and verified through Matlab and loaded into the demonstration system using the Matlab “Runtime” function.

Download Full-text

An environmental based techno-economic assessment for battery energy storage system allocation in distribution system using new node voltage deviation sensitivity approach

International Journal of Electrical Power & Energy Systems ◽

10.1016/j.ijepes.2020.106665 ◽

2021 ◽

Vol 128 ◽

pp. 106665

Author(s):

Pawan Saini ◽

Lata Gidwani

Keyword(s):

Distribution System ◽

Storage System ◽

Economic Assessment ◽

Energy Storage System ◽

Battery Energy Storage System ◽

Battery Energy Storage ◽

Voltage Deviation ◽

Sensitivity Approach ◽

Node Voltage ◽

Battery Energy

Download Full-text

VOLTAGE REGULATION CONTROL USING BATTERY ENERGY STORAGE SYSTEM IN DISTRIBUTION NETWORK WITH HIGH PV PENETRATION STRENGTH

Jurnal Teknologi ◽

10.11113/jurnalteknologi.v83.17112 ◽

2021 ◽

Vol 83 (6) ◽

pp. 203-209

Author(s):

Nur Muhammad Alif Ramli ◽

Siti Maherah Hussin ◽

Dalila Mat Said ◽

Norzanah Rosmin ◽

Amirjan Nawabjan

Keyword(s):

Energy Storage ◽

Storage System ◽

Distribution Network ◽

Energy Storage System ◽

Voltage Regulation ◽

Battery Energy Storage System ◽

Battery Energy Storage ◽

Voltage Rise ◽

Battery Energy ◽

Pv Penetration

In recent years, the increasing integration of PV generations into distribution network systems is becoming a huge concern as it introduces various complications such as voltage rise problems, especially during high PV penetration levels. Conventional mitigation methods using voltage regulating devices are not designed to mitigate this particular problem while emerging methods requires sacrifices in term of cost and profit to be made by PV system owners. Thus, mitigation using a battery energy storage system (BESS) is proposed in this paper, where it is specifically designed to solve the voltage rise problem in the distribution system during high PV penetration. This is achieved by controlling the charging and discharging of the BESS accordingly. To validate the effectiveness of the proposed BESS, a simulation using MATLAB/Simulink software of 25 distributed PV generations with respective loads connected to a distribution network power system is done. The penetration level is set from 0% to 100% and the voltage level is measured at the point of common coupling for each increment. The findings show that the BESS can regulate the voltage rise that occurred during high PV penetration of 80% and 100% from 1.11 p.u. and 1.13 p.u. to an acceptable voltage of 1.01 pu.

Download Full-text