The multi-function digital relay can protect a generator from voltage, frequency, reverse power, over current, loss-of-field, and over-excitation (V/Hz) disturbances, while also providing breaker failure/flashover protection. te clean and renewable en-ergy with lower costs. Moreover, the advantages of photovoltaic panels are numerous, both in terms of duration of the installation and in terms of reduced maintenance costs, this ensures that the tr nd and the investments are destined to continue. In this context, ABB. This standard specifies the configuration principles, setting principles and setting management requirements for the relay protection of power equipment in photovoltaic power stations. Meanwhile, protective devices have also gone through significant advancements from the electromechanical devices to the multifunctional, numerical. Electrical relays, protective devices used to switch power on or off for parts of a circuit, have been integrated into circuits for nearly two hundred years. The first example of a relay dates back to the mid-nineteenth century, when Joseph Henry used a small electric signal to activate an. Modern solar photovoltaic (PV) power plants typically generate electricity at low voltages, ranging from 400V to 800V. In this paper, EasyPower computer program is used with the module Power Protector.
