IEC 61850-based smart automation system logic to improve reliability indices in distribution networks

Reliability analysis of distribution systems has been attracting increasing attention. A special concern pertains to the distribution networks on which most failures occurs. The optimization of distribution system of breakers and power switches is a possible strategy to improve reliability. The paper describes development procedure for modelling restoring after a fault and calculating associated reliability indices and customers’ outage costs. The developed model of the network and reliability and outage costs calculating algorithm is suitable for multi-criteria analysis of the network. Proposed reliability and outage costs calculation algorithm is based on Monte Carlo simulation and genetic algorithm.

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The use of "absolutely reliable cameras" in the supply of natural gas to agricultural facilities

The Agrarian Scientific Journal ◽

10.28983/asj.y2020i1pp60-65 ◽

2020 ◽

pp. 60-65

Author(s):

Aleksey Konstantinovich Klochko ◽

Viktor Andreevich Zhila

Keyword(s):

Natural Gas ◽

Reliability Index ◽

Distribution Networks ◽

Gas Distribution ◽

Reliability Indices

The paper considers the supply of agricultural facilities with natural gas. The methodology and algorithm for determining the reliability index of gas distribution networks are presented. The concept of “absolutely reliable camera” is disclosed. Reliability indices and technical and economic characteristics of various schemes and configurations of gas distribution networks are determined. The issue of the use of "absolutely reliable cameras" for agricultural facilities is considered.

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Efficient Reactive Power Compensation Algorithm for Distribution Network

ASEAN Journal on Science and Technology for Development ◽

10.29037/ajstd.358 ◽

2017 ◽

Vol 20 (3&4) ◽

pp. 373-384

Author(s):

J. Jerome

Keyword(s):

Reactive Power ◽

Supply Voltage ◽

Distribution Networks ◽

Reactive Power Compensation ◽

Load Flow ◽

Solution Technique ◽

Distribution Automation ◽

Automation System ◽

Voltage Deviation ◽

Propagation Technique

The use of automation and energy efficient equipment with electronic control would greatly improve industrial production. These new devices are more sensitive to supply voltage deviation and the characteristics of the power system that was previously ignored are now very important. Hence the benefits of distribution automation have been widely acknowledged in recent years. This paper proposes an efficient load flow solution technique extended to find optimum location for reactive power compensation and network reconfiguration for planning and day-to-day operation of distribution networks. This is required as a part of the distribution automation system (DAS) for taking various control and operation decisions. The method exploits the radial nature of the network and uses forward and backward propagation technique to calculate branch currents and node voltages. The proposed method has been tested to analyze several practical distribution networks of various voltage levels and also having high R/X ratio.

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Reliability Assessment of Distribution Networks with Optimal Coordination of Distributed Generation, Energy Storage and Demand Management

Energies ◽

10.3390/en12163202 ◽

2019 ◽

Vol 12 (16) ◽

pp. 3202

Author(s):

Alberto Escalera ◽

Edgardo D. Castronuovo ◽

Milan Prodanović ◽

Javier Roldán-Pérez

Keyword(s):

Energy Storage ◽

Distribution Systems ◽

Network Reliability ◽

Demand Management ◽

Reliability Assessment ◽

Distribution Networks ◽

Reliability Indices ◽

Optimal Coordination ◽

Management Techniques ◽

The Impact

Modern power distribution networks assume the connection of Distributed Generators (DGs) and energy storage systems as well as the application of advanced demand management techniques. After a network fault these technologies and techniques can contribute individually to the supply restoration of the interrupted areas and help improve the network reliability. However, the optimal coordination of control actions between these resources will lead to their most efficient use, maximizing the network reliability improvement. Until now, the effect of such networks with optimal coordination has not been considered in reliability studies. In this paper, DGs, energy storage and demand management techniques are jointly modelled and evaluated for reliability assessment. A novel methodology is proposed for the calculation of the reliability indices. It evaluates the optimal coordination of energy storage and demand management in order to reduce the energy-not-supplied during outages. The formulation proposed for the calculation of the reliability indices (including the modelling of optimal coordination) is described in detail. The methodology is applied to two distribution systems combining DGs, energy storage and demand management. Results demonstrate the capability of the proposed method to assess the reliability of such type of networks and emphasise the impact of the optimal coordination on reliability.

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