Taleski, Rubin

Preferred name
Taleski, Rubin
Official Name
Taleski, Rubin
Main Affiliation
Email
rubin.taleski@feit.ukim.edu.mk

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    Item type:Publication,
    Controllable load operation in microgrids using control scheme based on gossip algorithm
    (Elsevier BV, 2018-01)
    Krkoleva Mateska, Aleksandra
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    Krstevski, Petar
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    The paper presents a novel control scheme for thermostatically controllable devices (TCDs) for application in Microgrids (MGs). It is implemented assuming that household controllable load is connected and interfaced with appropriate, commercially available equipment that allows communication. The work presented in this paper provides an integrated solution for continuous control of TCDs operation under normal MG operation as well as controlled change of TCDs states upon request of MG operator or aggregator. The solution is based on gossip algorithm (GSA) adapted for implementation in MGs. The simulation results of the proposed scheme show that its implementation facilitates MG operation control. The simulation results also show that it allows fast control message dissemination and adequate changes of operation of TCDs according the request of MG operator or an aggregator. The proposed control scheme also considers customer's comfort and does not require customer's continuous involvement in the control process.
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    Application of reduced PTDF matrix in iterative modified DC network model for cross-border capacity calculation with consideration of reactive power flow constraints
    (IEEE, 2017-07)
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    Vuletic, Jovica
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    Krstevski, Petar
    One of the biggest threats for the security of power grids are congestion of cross-border lines and congestion in the network itself as result of parallel flows. Nowadays, occurrence of congestion is a result of limited network transfer capacities as a direct consequence of increased power transactions. One of the reasons for cross-border congestions are the unreal cross-border capacities calculations. This is a result of assumptions and simplifications made in the methodologies for total transfer capacity calculation. In this paper, we propose an iterative optimization algorithm based on modified DC network model that takes into consideration reactive power flows and all the constraints that comes forward. The proposed methodology is based on reduced Power Transfer Distribution Factor (PTDF) Power Transfer Distribution Factor) matrix. This approach successfully solves two DC Optimal Power Flow (OPF) problems: cost minimization and total transfer capacity calculation. For testing purposes IEEE test network RTS 96 is used.
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    Item type:Publication,
    Regional Transmission Network Modelling for Facilitating Congestion Management
    (Wydawnictwo SIGMA-NOT, sp. z.o.o., 2015-06-05)
    KRSTEVSKI, Petar
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    Krkoleva Mateska, Aleksandra
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    Angelov, Jordanco
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    This paper provides convenient solutions for creation of transmission network models for power flow calculation for regional interconnected electric power systems. The creation of network models is based on data provided from different Transmission System Operators (TSOs) in standard data exchange format for this purpose. The automation of the model creating process facilitates the work of the TSOs in the field of congestion management and power system operational planning.