  With the increase in the number of electric vehicles (EV), there is a need
for the development of the EV charging infrastructure (EVCI) to facilitate fast
charging, thereby mitigating the EV congestion at charging stations. The role
of the public charging station depot is to charge the vehicle, prioritizing the
achievement of the desired state of charge (SoC) value for the EV battery or
charging till the departure of the EV, whichever occurs first. The integration
of cyber and physical components within EVCI defines it as a cyber physical
power system (CPPS), increasing its vulnerability to diverse cyber attacks.
When an EV interfaces with the EVCI, mutual exchange of data takes place via
various communication protocols like the Open Charge Point Protocol (OCPP), and
IEC 61850. Unauthorized access to this data by intruders leads to cyber
attacks, potentially resulting in consequences like energy theft, and revenue
loss. These scenarios may cause the EVCI to incur higher charges than the
actual energy consumed or the EV owners to remit payments that do not
correspond adequately to the amount of energy they have consumed. This article
proposes an EVCI architecture connected to the utility grid and uses the EVCI
data to identify the anomalies or outliers present in the EV transmitted data,
particularly focusing on SoC irregularities.
