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The paper deals with the comparative analysis of methods of losses distribution between electricity market participants on the example of their implementation on the test scheme IEEE RTS-96. Several methods have been analyzed: a proportional method (Pro Rate), a method of losses distribution between market participants in proportion to their contribution to power cardinality with adjacent nodes (Proportional...
The training model of 110 kV step-down substation in 1/10 scale is intended for educational processes improvement of higher education institutions, which carry out training of power industry engineers. The absence of continuous and unlimited access of students to power engineering facilities and the absence of the opportunity to carry out corresponding practical activities result in severe deficiency...
The paper presents the detailed description and analysis of the state-of-the-art and the key issues of scientific and technical decision-making efficiency assessment. In the introduction, specific features of science and innovation development in Russia as well as the main problems in scientific and technical solutions efficiency assessment are considered. The authors present structural and algorithmic...
Renewable energy development all over the world led to significant growth of solar power plants' installed capacity, including United Power System (UPS) of Russia. The stochastic solar generation facilities participate in wholesale or retail electric energy markets, depending on the installed capacity of the power plant, so the problems of operational, short-term and long-term forecasting need to...
The paper provides a methodology for substation loading curve optimization for power losses reduction and power network development deferral. The objective function of the problem provides costs minimization, however the optimization process is based on technical criteria, taking into account power system operation modes, electric energy consumers behavior and power equipment loading capacity. The...
The electric power systems are among the most complex engineering systems. The present systems are characterized by the high rate of different physical processes reaction, the complexity of the electrical energy storage on an industrial scale and the necessity of the automatic equipment application for the system management.
The paper provides the methodology of power network equipment technical state assessment risk evaluation to ensure effective power network operation and optimization of maintenance and repair schedules. The analysis of existing approaches for risk assessment is carried out from the point of mathematical formulation and existing application practice. The case study illustrates the calculation of technical...
The paper refers to the problem of high levels of short-circuit currents in high voltage networks of powerful consumption centers, resulting in high risks of power equipment damage. The major part of the united power system cannot operate in closed-loop mode due to high short-circuit levels, so the implementation of specific measures of short-circuit limiting become particularly important. The paper...
The paper is concerned with the analysis of the overhead transmission lines failures statistics as well as the analysis of the seasonal change in the failure intensity. The developed three-winding transformers models designed for the electrical networks structural reliability calculation are presented.
The paper addresses the problem of distributed generation efficiency improvement in terms of its parallel operation with unified power network. The optimization is carried out for a set of criteria, including distribution network voltage levels, transmission lines current-carrying limits, distributed generation maximum capacity etc. The objective function was formulated as mixed-integer programming...
The paper addresses the problem of distributed generation efficient integration into the power system, taking into account the major technological parameters of the power network. The first part of the paper provides brief review of the mathematical approaches, used for power system optimization with distributed generation units from the following points of view: objective function formulation and...
The paper is concerned with the information and analytical systems for electrical grid equipment life cycle management at power stations and substations. The brief description of the modern information and analytical systems in electric power industry is presented. The data analysis and ranking procedure in the information and analytical system was developed for optimal equipment repairs program formation...
The solution of the secondary circuits effect consideration problem during electrical network calculation is presented in the paper. The analysis of statistical operational data concerning primary and secondary equipment failures taken directly from the plant was performed. It follows from the analysis results that relay protection and automation consideration during the reliability calculation is...
Overhead transmission lines integral assessment problem is considered in the paper. Failures diagnostic and analysis procedure based on artificial intelligence techniques is presented. The tool set for integral diagnostic of overhead lines and infrastructure is established. The possibility of the present tools arrangement on the base of land and air based autonomous mobile robots is offered. The concept...
The paper is concerned with repair programs formation of the high voltage equipment at electric substations. The repairs strategy formation algorithm according to its technical state with consideration of its importance for power system is proposed. The proposed algorithm was verified in the context of 110 kV substation repairs analysis.
The power transformers state analysis based on different DGA approaches is presented in the paper. The DGA results interpretation complexity in modern information analytical systems of the high voltage equipment technical state assessment was revealed. The necessity of information analytical systems training and self-training principles was justified. Applying these principles for new data and formalized...
The decision support system model for electrical grid equipment technical maintenance and repair cycles correction as well as equipment reliability improvement on the basis of its technical state analysis is presented in the paper. The issues concerning the use of different neuro fuzzy inference algorithms and their impact on decision support systems operation for electrical grid equipment effective...
The paper presents a decision making system for 35–110 kV circuit-breakers on the basis of their technical state assessment (TSA) as a calculation example. A generalized assessment was performed on the basis of the state assessment of the following main system elements: a contact system; an arc-extinguishing chamber; a motor; a tank; bushings; internal insulation; a control board. The electric equipment...
The system of assessing the high voltage equipment technical state, taking into account power grid operation modes, is presented in the paper. The developed model is based on fuzzy logics, neural networks and statistical analysis methods. The model was verified in the context of transformer equipment with the use of specialized software package. The technical diagnostics data and the values of currents...
The paper presents the structure of decision support system for electrical grid equipment operation on the base of its state assessment based on aggregated available data concerning object of research by means of neuro fuzzy inference. Technical state assessment of both separate elements, notably electrical equipment (based on fuzzy logics methods) and integrated consolidated objects (by means of...
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