Reliability Indicators of Electrical Distribution Networks in Absence of Gas and Hot Water Supply

To assess the state of the elements of the 6-10 kV distribution electrical network of the city of Dushanbe, it is necessary to calculate the reliability indicators of the elements of power supply circuits, which allows you to determine the degree of reliability of the considered elements. The article discusses the levels of reliability indicators of the elements of the 6-10 kV distribution electrical network of the city of Dushanbe expressed in the form of a quantitative assessment obtained from annual reports for the periods of 2018-2019. The data collected from the journal of the operational dispatch service for emergency shutdowns of overhead, cable power lines and power transformers with a voltage of 6-10/0.4 kV are given. The factors leading to emergency shutdowns of the considered elements of the distribution electrical network have been established. To assess the reliability indicators of the elements of the distribution electrical network with a voltage of 6-10 kV, the following reliability indicators are calculated: the intensity and frequency of failures, the average recovery time, as well as the undersupply of electricity due to a power outage associated with element failures. The results obtained show the low reliability and energy efficiency of the elements of the distribution electrical network with a voltage of 6-10 kV in the city of Dushanbe.