Contents 1. Introduction
In the world of electricity, it is the demand of energy services that lead to energy planning. Technology acts as a link between the energy demand and energy supply. Due to the continuous usage of natural resources and the ever growing demand of power, we are integrating the renewable sources of energy into the existing grid system [1] [2]. Both wind and solar power plants are connected to the grid system through grid converters for transferring the generated DC power to the AC grid [3]. Also, the uncertainty in the availability of power from these resources can lead to the unstable operation of the system such as faulty conditions, transients, power fluctuations and many more [4]. In recent years, there has been a substantial increase in the employment of the non-linear loads especially in the distribution sector such as computers, colour televisions, motors, etc. These draw harmonic currents which have unfavourable effects including interference in communication system, loss of reliability, equipment overheating, machine transformers and capacitor failures, and inaccurate power metering [5]. The increase use of power electronic components within the distribution system and the dependence on the renewable energy sources which have converters as interface between the source and power system leads to the power quality problems for the operation of the power system [6]. Due to this reason power quality is a major concern of attention for power engineers [7]. This paper is organized as follows: Section I is the literature review part which will cover the renewable system and the power quality. Problems and challenges are in Section II. Section III is the remedy part and Section IV is the conclusion followed by the references.
