Abstract
Automatic sectionalizing and redundancy of power transmission lines is one of the conditions for network intellectualization and can significantly reduce the power supply interruption time for rural consumers. However, both sectionalizing and redundancy of power transmission lines in 0.4 kV electric networks are used extremely limitedly since there are no sufficiently effective methods and technical means for their implementation. This article presents a method to automatically deactivate the automatic load transfer switch when restoring the normal network operation mode. The paper considers the implementation of the method on the example of damage occurring in the network where power is supplied to consumers from two power sources using an automatic load transfer switch and two sectionalizing units. A device is developed which allows implementing the developed method of automatic load transfer switch deactivation. The device consists of sectionalizing unit, automatic load transfer switch, voltage presence sensor, power direction sensor, memory element, repeater element, element AND and 3 elements NOT. The work of the device is described. The proposed method for automatically disconnecting the automatic load transfer switch in order to return the consumers’ power supply circuit to its initial state solves the problem of eliminating unreasonable power supply interruptions for consumers.
Highlights
Improving power supply reliability and power quality is the main task to be solved when creating intelligent electrical networks (Smart Grids) [1,2,3,4]
If the power flow is directed towards the reserved section of the power transmission line, this means that the consumer of this section is supplied by the standby power source (SPS1) and the automatic load transfer switch (ATS) should not be disconnected
If the power flow changes direction, it is concluded that the power of the consumers of the reserved section from the main source is restored, that is, the sectionalizing unit SU2 is turned on
Summary
Improving power supply reliability and power quality is the main task to be solved when creating intelligent electrical networks (Smart Grids) [1,2,3,4]. Automatic sectionalizing and redundancy of power transmission lines (PTL) is one of the conditions for network intellectualization and can significantly reduce the power supply interruption time for rural consumers [6,7,8,9,10] Both sectionalizing and redundancy of power lines in 0.4 kV electric networks are used extremely limitedly since there are no sufficiently effective methods and technical means for their implementation [11,12,13]. One of the disadvantages of network redundancy is the lack of ways to automatically turn off the ATS to restore a power supply system back to a normal operation mode This need arises when the damage at the redundant PTL section is repaired and power is supplied to it from the main power source. The study aims to develop a method for automatically disconnecting a network ATS when restoring a normal network operation mode
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
