Rosseti Centre Belgorodenergo is completing a pilot project to create the first digital Distribution Zone on the basis of Borisovsky Distribution Zone. A 0.4-10 kV grid remote control system will be created here with the capability to continuously monitor the parameters of the transmission and consumption of electricity, the functions of self-diagnostics, and monitoring the quality of power supply to consumers. About 80 million rubles were allocated for the implementation of the project.
One of the main directions of the Digital Distribution Zone project is the construction of a smart grid of 6-10 kV. By the end of the year, power engineers will install 16 reclosers, 34 indicators of short circuits, 26 sets of disconnectors with motor drives on 13 long lines of 10 kV, supplying socially significant facilities of the Borisovsky district. Intelligent switching devices without participation of operating personnel will be able to locate and isolate a faulty section of the grid, while maintaining power supply to the main part of consumers. Five ring sections will be created with automatic location of a faulty section of power lines and two sections of automatic redundancy of the 35/10 kV substations “Kryukovo” and “Gruzskoye” in case of disconnection of the corresponding 35 kV overhead lines.
At transformer substations of 6-10 kV, an integrated energy monitoring system is installed with telemetry devices providing voltage control at 0.4 kV outgoing feeders and access control equipment for the transformer substations. The key link of the project is to equip all 0.4 kV bushings at transformer substations with “smart” metering devices, which will allow the power engineers to remotely take readings and automatically balance electricity supply and consumption.
“Energy monitoring will be carried out for each of the 378 transformer substations located on the territory of the Borisovsky district,” said Roman Shabrov, the chief of the Borisovsky Distribution Zone. “Information about the time, place, cause of power failure on a particular line will be received in real time by the dispatcher of the Unified Grid Control Centre, so the term for eliminating technological violations will be reduced to a minimum. In addition, at the grid nodes covered by smart commercial metering, an hourly balance of electric energy will be carried out, according to the results of which employees of the Distribution Zone will immediately be sent to grid sections with deviations that have arisen.”
On power lines with maximum energy losses, the power engineers will install smart metering devices at individuals and legal entities. By the end of the year, 1,111 such devices will be additionally installed on the territory of the Borisovsky Distribution Zone. Twenty percent of electricity delivery points will be covered by remote reading of control readings based on intelligent metering systems. 2,413 consumers in the district will be able to manage their energy consumption, the schedule and other parameters will be available from desktop computers and mobile devices.
The Digital Electrician project, the equipment of the vehicle fleet with the GLONASS system, projects for installing high-voltage points for commercial metering, the transition to digital radio communications and others are integrated into the Digital Distribution Zone. In particular, the Digital Electrician project involves equipping emergency response crews with mobile devices with special software. Power engineers will be able to remotely receive tasks for the performance of work, electronically prepare the necessary permits and clearance, record the fact of the beginning and end of work. Using a mobile device, it will be possible to photographically fix equipment defects and quickly post information about them in the database in order to expedite the organization of work to eliminate defects. Dispatchers will be able to see the location of crews on an electronic map, which will allow to assign emergency applications to the crews closest to the place of technological violation.
According to experts, the implementation of digital technologies in the electric grid complex of the Borisovsky district will allow to reduce operational costs for fault location by 41.6%, decrease power shortages by 31.6%, average consumer power restoration time by 28.6%, and reduce losses by 11%, will make it possible to quickly respond to any emergency situations, avoiding long-term restrictions on power supply to consumers.
The implementation of the Digital Distribution Zone projects is part of the general concept of digital transformation approved by Rosseti Centre in pursuance of the general Concept of Digital Transformation 2030 of PJSC Rosseti. Belgorodenergo is among the pilot regions. Five Distribution Zones were selected as platforms for the implementation of the Digital Distribution Zone project: the Borisovsky district with a deadline for implementation in 2019, Belgorodsky, Yakovlevsky, Valuisky and Belgorod Electric Grids, which are planned to be digitalized by July 2020.