The impact of distributed power generation systems on the grid infrastructure has not been properly taken into account. Initial grid planning and dimensioning are done according to the highest demand levels. Another problem that arises in terms of grid infrastructure planning is that the location of distributed power generation systems is not planned centrally by the distribution system operator. This causes security and protection problems in the grid operations. The distribution system operator has limited or no control over these exchanges. Power generation plants in the existing grid structure are generally owned by third-party organizations. In this case, there will be a challenge in energy flow between the grid and the distributed power generation system. However, when the energy produced by distributed power generation systems is excessive, the energy must be transferred in the opposite direction. If distributed power generation systems are connected to the grid, low-capacity load demands are met by these sources. The electricity generated in the distributed power generation system can cause a great challenge to the running operation of the distribution grid, because the traditional grid structure was designed according to the one-way power flow from the power production point to the users connected to the medium- and low-voltage grids. In this case the distributed power generation system that will connect to the grid should be installed at the consumption place or it should only produce its own electricity (off-grid). Someone with a distributed power generation system gets benefited from the renewable electricity generation tariff set by local governments in order to join the electricity grid. A user with a distributed power generation system should have equal conditions with all other sources in the grid. The operator of the new generation distribution system must accurately measure the amount of energy transferred to the grid and sell it with a fair marketing. The remaining energy production from these sources can be sold back to the power company. Solar PV panels on the roof of a house are owned by individual customers and are located on the customer’s premises. Distributed power generation system owners should be protected using long-term energy metering and planning such as feed-in tariffs. This distributed power generation system revenue should be applied within the scope of tariffs determined by regulations. Since most distributed power generation systems will be located in a regional distribution system, the decision on the distribution system should be the responsibility of the regulatory authorities. ĭistributed power generation system owners need to achieve a kind of steady income for their long-term economic sustainability. For this reason, there should be a technical arrangement to connect the distributed power generation systems to the distribution grid and to each other in a safe manner without any negative effects. It also does not seem possible to allow each distributed power generation system to be randomly connected to the grid. Currently, technical regulations regarding the connection of distributed power generation systems to the existing distribution grid are minimal. Depending on the installed power system capacity, it is usually connected to the distribution grid at low-voltage or rarely at medium-voltage level. Ahmet Aktaş, Yağmur Kirçiçek, in Solar Hybrid Systems, 2021 1.2 Distribution generation gridĭistributed power generation systems are often installed by private owners in their homes.