How can the hosting capacity for decentralized renewable energy be increased?

The Smart Grid LAB Hessen project tests active control methods for the intelligent power grid of the future, which will be characterized by a large number of decentralized, renewable generation plants. Project partner TRACTEBEL is transferring the results from the project to international energy infrastructure projects.

In developing countries, electricity generation is often dominated by bulk and centralized power plants. Electricity travels for relatively long distances to reach the consumption site, so power quality issues appear, including high power losses and voltage drop. As a result reactive power compensation is required and therefore higher operation costs are applicable.

Distributed Renewable Energy Sources (DRES) provide an optimal solution for rural electrification in these regions, as the electricity is generated at the consumption site, avoiding power quality problems and additional operational costs.

However, due to the centralized structure of the legacy grid infrastructure, the hosting capacity of DRES is limited by power quality issues as well as overloading of power supply equipment.

TRACTEBEL has identified several flexibility options that can improve the DRES hosting capacity. In a simulation study now published in the International Journal of Smart Grid, TRACTEBEL’s team was able to show that the use of load tap changers and intelligent control can increase the uptake capacity for distributed renewable energy by a factor of up to 1.92.

More information can be viewed and downloaded as a PDF through the following link:

> INTERNATIONAL JOURNAL of SMART GRID: “Impact of On-Load Tap Changers and Smart Controllers on the Distributed Renewable Energy Hosting Capacity

> 21st Wind & Solar Integration Workshop: “Impact of smart grid technologies on the distribution network in Uganda: A case study” Note: This paper (presentation file) was presented at the 21st Wind and Solar Integration Workshop and published in the workshop’s proceedings.