Working with OpenADR and OCPP in EV infrastructure

The combination of OCPP and OpenADR equips charging stations with the capability to quickly react on locally and currently available DER grid capacity and makes the charging station thus flexible and smart . While the OpenADR protocol standardizes the messaging and DR information exchange between a CP’s backend and the CMS, the OCPP functionalities initiate the actions required from the CS. Such reactions can be postponing a charging process, consider priority charging, and optimizing charging schedules . On the consumer side, the interplay of the OCPP and the OpenADR protocol saves cost per consumed energy unit (kWh) while maximizing the amount of renewable energy used for EV charging. Practically, an OCPP central server can register with the OpenADR Virtual Top Node server as an OpenADR Virtual End Node and can include all participating charging stations into the dynamic electricity system.

Some of the most important features of OCPP are

• Session authorization – pre-authorization to identify and allow the EV user to use the charging service
• Collecting billing information – providing charging session details to the backend system to calculate the charges.?
• Data transfer, diagnostics and notifications – sending information such as status, progress of updates or cancellation requests between the charge point and the central system.
• Smart charging – stacking and combining charging profile purposes to support load balancing.
• Phase rotation – sending meter values and reporting the phase rotation in respect to the grid connection.
• Usability – locating charging stations and making reservations.?
• Real-time charging session data – sending data on which Electric Vehicle Supply Equipment (EVSE) is available, currently charging or out of order.?
• Remote control – remotely stopping or starting charging events, changing the status, upgrading firmware, configuring new charging points or reading and repairing logged errors.

You may also like to read in depth OpenADR and OCCP:

What is OpenADR and How it works

What is OCPP(Open Charge Point Protocol) and How its helpful in EV Charging

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