Maximum Permissible Level of Wind and Solar Based DG Penetration in Sub-Transmission System without Violating the Techno-Economic Benefits

Authors

  • Srinivas Nagaballi
  • Vijay S. Kale

Abstract

The electric utilities are facing challenging issues such as quality, reliability of power supply, voltage stability, power loss, and economic concerns. This is due to risingelectrical energy needs and utilization of Distributed Energy Resources (DERs) into the modern power system. DERs include solar Photo Voltaic (PV) system, small wind generators, battery energy storage systems, etc. These elements had added new complexity in the design and performance of the distribution system. In this paper, the maximum permissible limit of wind and solar-based Distribution Generation units(DGs) injection on the sub-transmission systemwaspredicted without violation of the technical and economic aspects.The objective is to mitigate the power loss (Ploss) and enhance the voltage profile (VP) considering net economical cost-benefit to the distribution utility. The IEEE 14-bus sub-transmission system was utilized for the study purpose. The results illustrate the maximum permissible limit of wind and solar-based DG penetration on the test system is 40% and 75% respectively in terms of technical aspects. Similarly, the permissible level of economical cost-benefit is 100% for solar-based DG and 55% for wind-based DG.  Comparing solar and wind-based DG injection into the test system, solar-based DG contributed positively to the test system with techno-economic benefits.

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Published

2020-02-09

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Section

Articles