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The modern trends of the electric power systems development intended to their modernization and efficiency improvement are associated with the development of both the technical and the processing facilities as well as the control models development. The industrial assets management systems are no exception. The present systems are intended to ensure the steady technical state control as well as the...
This article focuses on the question of the necessity and the amount of maintenance of protective relays and automation. It analyzes carefully current published works on this subject. In addition, the probabilistic model of protective relay's device state is constructed and applied here.
The relay protection and automation (RPA) is the essential part of the power system, which ensures the system failure-free operation. However, the inadequate attention is paid to the RPA operability problem during the electrical network reliability assessment. The study is focused on the determination of the RPA states probabilities with consideration of many factors characterizing the RPA ability...
This article discusses possible ways of technical diagnostics of high-voltage electric equipment of substations and electric networks by means of mathematical apparatus of the theory of indistinct sets and indistinct relations. It is shown that on the basis of indistinct expert estimates it is possible to do a prediction for possible causes of failures if some estimates of the available symptoms of...
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 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...
There is a strong growths of equipment fleet with expired specified standard service life in Russia. Substations equipment repair is necessary for no-break power supply to consumers. Optimal selection of equipment to be removed out of service leads to the whole power supply system reliability improvement. Equipment state assessment is an important task for determination of elements which fail to meet...
The article is concerned with problems associated with expert system implementation for technical state and reliability assessment of power networks complex object, such as substation. The article presents operation algorithm and structure of designed expert system. The article also contains calculation example of technical state assessment of power transformer by means of neural fuzzy inference based...
Today Enterprise Asset Management (EAM) is one of the main problems for grid companies in Russia. After the collapse of the USSR electrical substation are owned by energy companies. In the USSR equipment maintenance was carried out using the planned preventive maintenance system but it is economically inefficient in the current market conditions. Therefore today to solve the equipment technical state...
This paper addresses the problems, connected with calculation of the electric field and analysis of surface flashover of node tank SF6 circuit breaker. Namely, the gap between the grounded tank unit, a filter system and a conductive system is receiving input power. The paper also provides the recommendations for change SF6 circuit breaker design.
The paper addresses the problem of electric load forecasting, using artificial neural networks mathematical apparatus, subject to error minimization on the long forecasting interval. Balanced artificial neural network architecture gives the possibility to maintain small deviation between forecasted and real values simultaneously with constrained squared error variation maintenance. Proposed methodology...
This paper addresses the problem of distributed generation siting and sizing optimization with subsequent equipment configuration assessment. The proposed methodology is based on the combination of genetic algorithms and indicative analysis, which gives an opportunity to assess power system interaction with incident infrastructures and take into account technical, economical, regulatory, ecological...
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