Reliability indices improvement according to grid code compliance applied to PV power plants (Algerian grid code case study)

The reliability of any electrical power system must be evaluated in order to increase durability. In accordance with the IEEE standard 1366, 2012, reliability is modeled by quality of service and profitability indices. This reliability highly depends on the applied grid code. An investigation was conducted on data recorded during these last five years since 2018 from OUED KEBRIT PV power plant located in Algeria. It was highlighted in this paper that the inverter power controller can decrease significantly the reliability. In many cases electrical protections of PV power plant react by disconnecting it, whereas the fault is outside. Data mining shows that many PV power plant breakdowns are not necessary. A modified active and reactive power control strategy was applied to the PV power plant and compared to the existing one. The proposal is based on software and hardware management. Thanks to the proposed strategy control, the PV power plant decoupled control is more reliable and was highly improved in this paper.