There are two methods for mitigating of harmonics in microgrids. 1- using the extra-capacity of Multi-Functional Grid-Tied Inverters (MFGTIs) to supply the distortion power to the londs along with maintaing the PCC voltage quality and 2- Using dedicated custom power equipments such as D-STATCOM. Dedicated custom power equipment can mitigate hrmonics near the loads and so they can prevent from harmnics flowing into the source. This may also prevent from PCC voltage degrading.

The first choice may be more economic, but faces with more challenges such as need for Dgs controllers modification. The second choice is a better technical option which decrese losses, suppress parallel resonances and improves the PCC voltage quality without the need for extra measures.

1. Benefits of renewable based system of clean energy generation along with power quality improvement.

2. Stable under various load conditions such as unbalance, sags and swell etc.

Thank you

It does. But before you start thinking of installing a STATCOM or DSTATCOM, always consider an alternative way of achieving the same purpose. Remember that such devices are expensive. If you can come up with an efficient control scheme for minimizing the harmonics, this will reduce the overall cost of your system by many folds.

Centralized power generation systems are facing the twin constraints of shortage of fossil fuel and the need to reduce emissions.

Therefore , emphasis has increased on distributed generation (DG) networks with integration of renewable energy systems into the grid or on isolated microgrids. This leads to energy efficiency and reduction in emissions. This can also reduce the long transmission line electrical power losses.

With the increase of renewable energy penetration inthe grid, power quality (PQ) challenges of the medium to low voltage power distribution system is becoming a major area of interest. Most of the integration of renewable energy systems to the grid takes place with the aid of power electronics converters. The main purpose of the power electronic converters is to integrate the DG to the grid in compliance with PQ standards.

However, high frequency switching of inverters can inject additional harmonics to the systems, creating major PQ problems if not implemented properly. On the other hand,

Custom Power Devices (CPD) such as STATCOM (Static compensator), DVR (Dynamic Voltage Restorer) and UPQC (Unified Power Quality Conditioner) are the latest development of interfacing devices between the distribution supply (grid) and consumer appliances. This class of equipment is designed to overcome voltage/current disturbances and improve the power quality by compensating the reactive and harmonic power generated or absorbed by the load.

The principal advantages are several functions in the same times : controle the voltages, controle power(P and Q), reduce the harmonics and improvement the power quality.

Yes it does.

DSTATCOM utilization in Distribution network can help in mitigating harmonics and improve power quality.