Distributed Control of Battery Energy Storage Systems for Voltage Regulation in Distribution Networks With High PV Penetration

Abstract

The voltage rise problem in low voltage (LV) distribution networks with high penetration of photovoltaic (PV) resources is one of the most important challenges in the development of these renewable resources since it may prevent the maximum PV penetration considering the reliability and security issues of distribution networks. In this paper, the battery energy storage (BES) systems are used in order to solve the voltage rise during the peak PV generation as well as the voltage drop while meeting the peak load. A coordinated control strategy is proposed to regulate the charge/discharge of BESs using a combination of the local droop based control method and a distributed control scheme which ensures the voltages of feeder remain within allowed limits. Therefore, two different consensus algorithms are used: The first algorithm determines the BESs participation in voltage regulation in terms of their installed capacity whereas the second one modifies the BESs performance in terms of their state of charge (SoC) to prevent the excessive saturation or depletion of batteries. The proposed controller enables the effective use of storage capacity in different conditions. Finally, the simulation results based upon real data of a radial distribution feeder validate the effectiveness of this approach.

Coordinated control for voltage regulation of distribution network voltage regulation by distributed energy storage systems

“…The consensus algorithm is used to regulate the feeder voltage, while the localized control regulates the state of charge (SoC) of each ESS within the desired SoC range. In [14], the former one is voltage regulation in terms of their installed capacity and the latter one modifies the BESs performance according to their SoC. These papers mainly focus on the voltage regulation of low voltage distribution network that the area is small.…”

Home Energy Management Systems under Effects of Solar‐Battery Smart Inverter Functions

“…In the meantime, the voltage rise problem has been extensively dealt with from an approach of using on‐load tap changing transformer , directly curtailing active power of rooftop solar (PV) systems , managing reactive power , controlling energy storages , and electric vehicles . Since smart inverter functions are being mandated by interconnection standards , there is a gap where HEMS and these functions are not considered at the same time.…”

Real-Time Coordinated Voltage Control of PV Inverters and Energy Storage for Weak Networks With High PV Penetration

“…between 0.9 lagging to 0.9 leading) based on the Connection Agreement [9], which further weakens its voltage regulation ability. Hence, a battery energy storage system (BESS) is proposed to support PV systems with charging/discharging operations [10][11][12]. Although the widely implemented moving average algorithm [13] for BESS can effectively improve voltage profile through smoothing PV power output, the resultant frequent charging/discharging operations can decrease the BESS life span, which makes the BESS solution uneconomical.…”