Rüzgar Enerjisi Entegreli Adaptif Koruma Altındaki Şebekelerde Aşırı Akım Röle Koordinasyonu

Abstract

Gelecekte elektrik dağıtım şebekelerinin kapasitelerinin yetersiz kalacak olması insanları dağıtım şebekelerine DÜ (Dağıtık Üretim) tesislerini entegre etmeye zorunlu bırakmıştır. DÜ tesislerinin şebekeye birçok faydası var ise de dağıtım şebekesinin karmaşıklaşmasına da yol açmaktadır. Bu durum dağıtım şebekesinin korunmasını zorlaştırmakla beraber kısa devre akımlarının da değişken bir yapıya sokmaktadır. Değişken kısa devre akımları rölelerin yanlış sürede devreye girmesine neden olarak AAR (Aşırı Akım Röle) koordinasyonunun bozulmasına neden olmaktadır. Bunun için şebekelerde çift yönlü çalışacak rölelere ve adaptif korumaya ihtiyaç duyulmaktadır. Bu çalışmada DÜ tesislerini içeren ve orijinal haline bağlı kalınarak oluşturulan IEEE 4-baralı test sistemi simülasyon çalışmaları için kullanılmıştır. Bu sayede değişken şebeke koşullarına hızlı ayak uydurularak kısa devre akımı değişkenliğinin etkisi en aza indirilmiş ve optimum koruma sağlanmaya çalışılmıştır.

Keywords

• Adaptif koruma
• yönlü aşırı akım röle koordinasyonu
• dağıtık üretim

Overcurrent Relay Coordination in Adaptive Protected Networks with Integrated Wind Energy

Abstract

The fact that the capacity of electricity distribution networks will be insufficient in the future has forced people to integrate DG (Distributed Generation) facilities into their distribution networks. Although DG facilities provide many benefits to the grid, they also lead to complexity in the distribution network. This situation not only makes it difficult to protect the distribution network but also causes short circuit currents to have a variable structure. Variable short circuit currents cause the relays to activate at the wrong time, causing OCR (Overcurrent Relay) coordination to be disrupted. For this reason, bidirectional relays and adaptive protection are needed in the networks. In this study, the IEEE 4-bus test system, which includes DG facilities and was created in accordance with its original form, was used for simulation studies. In this way, the effect of short circuit current variability is minimized and optimum protection is achieved by quickly adapting to variable network conditions.

Keywords

• Adaptive protection
• directional overcurrent relay coordination
• distributed generation

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