Time Factor for Determination of Power Supply System Efficiency of Rural Consumers

Abstract

This chapter proposes the interpretation of the concept of “power supply system efficiency” and a mathematical model that focuses on minimization of electricity supply expenses while observing the time criteria. The research examines the constituents of the specified time criteria, the calculations of power outage time, and the time of power supply restoration. In addition, this chapter describes the constituents of implementation time for a technological connection of rural consumers to electric networks and the statistical data on the time of inconsistency between power quality and regulatory requirements. Furthermore, this chapter investigates the applying possibility of the proposed mathematical model for the development of measures that can improve power supply system efficiency. In order to improve electricity supply reliability of rural consumers, the technical condition monitoring of power lines and electrical network automation is carried out.

Study of statistical data on the composition of electric distribution networks on the example of a Kaluga region district

“…Damage to overhead Comparison with statistical data from other regions shows that, in general, the causes of damage are similar both in composition and in percentage [13], [14]. This makes it possible to use the same approaches as in other regions to increase the reliability of distribution electric networks, thus increasing the efficiency indicators of the power supply system of consumers as a whole [15], [16]. The priority of these measures is the downsizing of power lines, the use of automatic sectionalizing of power lines, the use of insulated wires [13].…”

Analysis of the Power Supply Restoration Time after Failures in Power Transmission Lines

“…In turn, a main indicator of the PS reliability is power supply restoration time [32]. It can include the following constituents: time for obtaining information, time for information recognition, time to repair failures, and time for connection harmonization [33]. That is, the PS restoration time can be determined by Equation 1 Each component of this equation can be further analyzed and contains several more time intervals, each of which ultimately has an impact on the overall power supply restoration time.…”

“…A time for obtaining information is denoted as an interval from the beginning of a failure until obtaining information on it by a dispatching service of a PS company [33]. This time includes the following intervals:…”

“…The information recognition time may be described using this equation: [33] t rec.infor. = t read.infor + t dec + t search + t report (3) where…”

“…The repair time is an interval starting from the preparation of equipment to eliminate a failure up to the harmonization of the repair equipment [33]. This time can be represented as the following equation: The time of the connection harmonization t harmonize can be described using this equation [33]:…”