The region-based method has been applied in transmission systems and traditional passive distribution without power sources. This paper proposes the model of total quadrant security region (TQSR) for active networks (ADN) with high penetration distributed generation (DG). Firstly, TQSR is defined as a closed set all N-1 secure operation points state space ADN. Then, modeled considering constrai...

conventional passive distribution networks are changing to modern active distribution networks which are not radial. conventional load flow methods should be modified for new distribution networks analysis. in modern distribution networks distributed generation (dg) units are embedded with conventional and/or renewable resources. dg units are generally modeled as pv or pq nodes which inject ...

In this paper, simultaneous placement of distributed generation, capacitor bank and protective devices are utilized to improve the efficiency of the distribution network. The objectives of the problem are reduction of active and reactive power losses, improvement of voltage profile and reliability indices and increasing distribution companies’ profit. The combination of firefly algorithm, parti...

Conventional passive distribution networks are changing to modern active distribution networks which are not radial. Conventional load flow methods should be modified for new distribution networks analysis. In modern distribution networks distributed generation (DG) units are embedded with conventional and/or renewable resources. DG units are generally modeled as PV or PQ nodes which inject ...

State estimation in the energy management center of active distribution networks has attracted many attentions. Considering an increase in complexity and real-time management of active distribution networks and knowing the network information at each time instant are necessary. This article presents a two-step multi-area state estimation method in balanced active distribution networks. The prop...

A large number of DGs(distributed generators) in the ADN (active distribution network ) brings great uncertainty to power systems making it difficult quantify fault characteristics. Undoubtedly, setting traditional protection becomes more complex and difficult. Therefore, differential is an effective solution cope with it. However, requires high time synchronization, which be satisfied based on...

The paper presents a new framework to quantify the amount of dynamic grid support that should be provided from converter-based energy resources replacing generation synchronous machines. A tuning approach for local stability issues in active distribution networks (ADN) is presented, followed by an aggregation procedure derive adequate low-order ADN models. resulting models benchmark systems wit...

Abstract Measurement and model uncertainties in power grids lead to the unpredictability of its output, which brings great challenges safe sustainable system operation. Furthermore, optimal placement strategies measurement devices new energy sources have a impact maintain This study introduces constructed an active distribution network (ADN) including storage (ESS) is optimized by using hybrid ...

With the integration of distributed generations (DGs), distribution networks are being transformed into active (ADNs). Due to ADNs‘ complex operational scenarios, massive data, and fast-changing network topologies, traditional state-estimation (SE) methods inadequate meet requirements computational accuracy, speed, robustness. Aiming at SE ADNs, this paper proposes a data-driven classic-model-i...