Algorithms and probabilistic models of parameters of operation of in-plant power supply

• Published in: Izvestiâ vysših učebnyh zavedenij. Problemy ènergetiki Vol. 23; no. 1; pp. 93 - 104
• Main Authors: E. I. Gracheva, O. V. Naumov, A. N. Gorlov, Z. M. Shakurova
• Format: Journal Article
• Language: English
• Published: Kazan State Power Engineering University 01.05.2021
• Subjects: external factors; in-plant power supply; operating conditions; operating parameters; optimal modes
• ISSN: 1998-9903
• DOI: 10.30724/1998-9903-2021-23-1-93-104

PURPOSE. To address the problems of the functioning of the SES. To develop algorithms for evaluating the parameters of the efficiency of the functioning of the systems of intra-plant power supply. To investigate the operability of low-voltage shop networks of radial, trunk and mixed structure in optimal operating conditions of the equipment when modeling the impact of external factors, such as the root-mean-square load factor of the equipment, the temperature of the shop room and the calculated time interval on the operating parameters of the system. As the operating parameters of the system are accepted: the value of the equivalent resistance of the low-voltage electrical network. the amount of active power loss and the amount of electricity loss in the low-voltage network. METHODS. Probabilistic and statistical methods for evaluating the functional parameters of systems were used to solve the tasks. RESULTS. The article considers the features of the functioning of low-voltage networks of intra-plant power supply systems. Models are developed and the performance characteristics of low-voltage electrical networks of various topologies are calculated depending on the main circuit and operating parameters of electrical equipment when the values of the limits of the intensity of external influences change. CONCLUSION. The use of probabilistic methods allows us to take into account the dynamics of the main parameters of in-plant power supply systems when evaluating the effectiveness of their functioning. The calculations showed how the performance characteristics of such systems change depending on the intervals of variation of external factors in the operating conditions. The results obtained allow us to recommend the use of the developed models for effective control of circuit and mode parameters of low-voltage electrical networks to improve the quality of power supply to consumers.It is assumed that for external parameters of a random nature, the normal distribution is reliable. Algorithms for calculating the performance characteristics of in-plant power supply systems of various topologies and designs at different values of the limits of the intensity of external influences of the operating parameters are developed. At the same time, it is established that with an increase (decrease) in the intervals of changes in external parameters, their permissible intensity decreases (increases) in relation to the maximum intensity value for various operating modes of the equipment.