Network compensation with active power filters integrated to PV generation

Abstract

This paper tries to improve the power quality and to contribute with additional active power for isolated power systems. These systems either have their own generation or are connected to the network but they are always far away from great power generation centres. The proposed methodology consists of integrating an active power filter with a photovoltaic (PV) generation source, which use the same inverter for connecting to the network. Through this integration a double aim is fulfilled: on the one hand the power quality is improved through the compensation capacity of active power filters, and on the other an extra contribution of active power is supplied by PV system. The power system operation is analysed through the instantaneous power theory and simulated using MATLABMMULINK environment. This is a feasible solution for the growth planning of isolated systems, while the operation and maintenance costs as well as energy losses can be reduced.Index Terms-Active power filter, isolated power systems, network compensation, photovoltaic generation.

Power quality enhancement of isolated power systems through series compensation

“…Hence industry standards, such as that prescribed under the ITI curve [43], have been developed to quantify what would be considered acceptable power quality for these sensitive loads. With regard to mitigation methods, the authors of [86,87] propose methods to improve power quality of isolated power systems through the use of flywheel energy storage system or active power filter respectively, such as those described in Section 2.5.1. These are promising technologies and no doubt, will find ready applications if they can be made cost-effective.…”

“…However, the proposed technique is shown to require only relatively modest modification of the SC control scheme and the addition of a small inductive filter. Therefore, the proposed scheme could be an attractive alternative to that described in [86,87]. Furthermore, besides the control of the SC to achieve harmonics mitigation, the control of the voltage in the energy storage system in the SC will also be described.…”