Grid Code Proposal for Solar Photovoltaics Power Plant in Indonesia

This master thesis deals with the grid code design for solar photovoltaics power plant (PVPP). For this purpose, three approaches are identified: (1) Several sets of international grid codes for large scale solar PVPP are studied from operational perspective such as voltage and frequency boundaries, active power and frequency support, reactive power and voltage support and fault-ride-through. The chosen sets of grid codes are of Puerto Rico, Germany, Denmark and European Union since they are mature enough and well-developed to study. Additionally, the core of this master thesis is to study the existing electricity transmission and distribution system in Indonesia along with current grid codes. The aforementioned research of international grid codes serves as a foundation to propose suitable grid code design or update existing grid code for solar PVPP in Indonesia. (2) the introduction and characteristics of solar photovoltaics power plant (PVPP) in which the basic electrical components (e.g. PV panel, PV inverter and transformer) are discussed. Besides, inverter topology (e.g. central inverter topology, string inverter topology, multistring inverter topology, etc.) and internal collection grid configuration (e.g. radial configuration, ring configuration, star configuration) is explained. In addition, the brief modelling approach for each electrical component is given in this chapter. (3) In the later part of this master thesis, a 1 MW solar PVPP along with the electrical grid is modelled and simulated to test the proposed grid code for solar PVPP in Indonesia. The proposed grid codes that are tested and simulated are active power and frequency regulation particularly absolute production (i.e. power curtailment) through maximum power point tracking (MPPT) function in PV inverter as well as reactive power and voltage support regulation such as function of voltage control, reactive power control and power factor control