An Adaptive Protection Technique for Smart Distribution Network

Abstract

The future distribution networks (DNs), commonly known as the smart grid is expected to be reliable, efficient, and can accommodate renewable energy resources. The smart distribution network has to withstand the technical challenges related to the integration of distributed generations (DGs). Among these technical challenges, protection malfunctioning with the increased integration of DGs is one of the important issues, which requires a great concern. Thus, a protection philosophy, which can suit the future smart grid requirements with respect to increased integration of DGs, has to be devised. In this paper, an adaptive protection technique, which is based on the characteristics of fault-current and load-current variation, is proposed. In the proposed method, intelligent electronic devices (IEDs) monitor the status of circuit breakers (CBs) and DGs. If any status change occurs, the calculation and relay agents are triggered to update the IEDs. DigSILENT PowerFactory is used to verify the suggested philosophy. Especially DigSILENT Programming Language (DPL) is used to model the adaptive protection. The solar power plant in the Antalya vicinity in Turkey is used to verify the proposed method. The results of the simulation study show the correct operation and effectiveness of the proposed method.

Literature Review Skema Proteksi Jaringan Distribusi Yang Terhubung Dengan Pembangkit Tersebar

“…Karateristik arus gangguan pembangkit yang berbasis generator sinkron atau generator induksi, memiliki perbedaan dengan pembangkit yang terhubung dengan antarmuka inverter [7]. Kinerja sistem proteksi tradisional pada jaringan distribusi yang tersambung dengan DG juga tergantung pola operasi DG [8] [9], karena DG tidak selalu beroperasi dan tersambung ke jaringan distribusi. Sistem proteksi tradisional tersebut hanya cocok diterapkan pada jaringan distribusi yang memiliki aliran daya searah.…”

Microgrid Protection Challenges and Mitigation Approaches–A Comprehensive Review

“…In article [12], an adaptive protection scheme is proposed for the distributed system based on the fault current and variation of the load. Authors in articles [13], [117], developed a new microgrid protection approach and test for different types of protection challenges in terms of different types of DERs, microgrid configuration, bidirectional current flow, converter fault current level characteristics, and different relays fault levels.…”

“…The conventional protection schemes which are used for conventional power systems are relying on a certain fault current level and one threshold setting is enough for relay operation. So, it fails when fault current changes in different ranges and with one relay threshold setting, the relay may lead to misoperation [12]. Therefore, the conventional protection schemes which are designed for conventional network system is not suitable for a microgrid with DER due to the following reasons [13].…”

Multiagent System-Based Adaptive Numerical Relay Design and Development: Part I - Firmware

“…Adaptive protection has emerged as the leading and evolving method for power system protection in recent times [20]- [24]. A relay and generation agent-based multiagent system protection technique for coordinating overcurrent relays when there are multiple power sources is provided in [25].…”