Why should a battery energy storage system be installed in low voltage distribution network?

But, on the other hand, some problems regarding harmonic distortion, voltage magnitude, reverse power flow, and energy losses can arise when photovoltaic penetration is increased in low voltage distribution network. Local battery energy storage system can mitigate these disadvantages and as a result, improve the system operation.

Why should PV systems be used in LV distribution network?

Utilizing PV systems can help to reduce the dependence on conventional power plants, improve voltage profile, and decrease energy losses . However, in the case of high PV penetration in LV distribution network, reverse power flow may occur when the PV production exceeds the consumers’ load .

Why is local battery energy storage system important?

Local battery energy storage system can mitigate these disadvantages and as a result, improve the system operation. For this purpose, battery energy storage system is charged when production of photovoltaic is more than consumers’ demands and discharged when consumers’ demands are increased.

Is voltage regulation important in energy storage?

Optimal planning and operation of energy storage is performed in for peak shaving, reducing reverse power flow, and energy price arbitrage in distribution network with high penetration of RES, but, voltage regulation is not taken into account.

When is battery energy storage system charged and discharged?

For this purpose, battery energy storage system is charged when production of photovoltaic is more than consumers’ demands and discharged when consumers’ demands are increased. Since the price of battery energy storage system is high, economic, environmental, and technical objectives should be considered together for its placement and sizing.

How does PV penetration affect power flow?

The total daily energy loss is 14.3 kWh and power flow does not reverse to transmission network in any hour. As shown in Table 4 and Fig. 7, Fig. 8, by increasing PV penetration to 93%, the total daily energy losses increase and reverse power flow occur which the total daily values of Cases 2 and 3 are 0.6 kWh and 46.6 kWh, respectively.