5.2

Introduction of New Equipment

At JSC Tyumenenergo, implementation of new and upgraded equipment and technologies is the primary focus while improving reliability of the equipment during modernization, retrofitting and reconstruction.

In 2014, JSC Tyumenenergo introduced five new technologies, aimed at increasing power supply reliability, manageability, and informative value of electricity grid facilities:

  1. Introduction of re-closers SMART35, development of the company Tavrida Electric.
  2. Use of new generation cables: reinforced aluminium composite cable ACCC Brussels 430, manufactured by the company Lamifil (USA, Belgium) and reinforced aluminium composite cable ACCC Oslo 325.
  3. Introduction of electricity consumption metering system, based on NES system equipment manufactured by Echelon Corporation, on 0.4 kV grids, aimed at transfer of electricity metering data via 0.4 kV power line carriers (PLC) and cellular communication channels (GSM/GPRS) — 9911 TS.
  4. Introduction of electricity consumption metering system, manufactured by JSC Concern Energomera, in 0.4 kV grids, aimed at transfer of electricity metering data via radio and cellular communication channels (GSM/GPRS) — 9911 TS.
  5. Introduction of electricity consumption metering system “Mir” manufactured by NGOS Mir (Omsk), with additional telemetry functions.

Tyumenenergo` s branches Nizhnevartovsk Electric Grids and Nefteyugansk Electric Grids brought in eight reclosers SMART35.

Recloser SMART35 is a smart switching unit designed by Tavrida Electric, which allows it to effectively connect customers and increase in reliability of 35 kV grid due to its small size and functionality. Recloser SMART35 is equipped with the smallest vacuum 35 kV interrupter unit in the world. The recloser`s casing is covered with solid low-weight insulation, highly resistant to environmental factors. Innovative recloser`s control device, which provides high speed of data processing, is characterised by its small size and power consumption. SMART35 does not require any special maintenance or scheduled preventative maintenance throughout the lifespan due to its highly reliable design, absence of a large number of moving parts, high stability of the factory adjustments, use of external silicone rubber insulation with great resistance to high temperature differences and better insulating properties as compared to other types of insulation. Voltage and current sensors installed in high-voltage bushings allow it to measure system state variables, and to keep a log of operating and emergency events in the grid.

Another new technology using composite cables was applied during reconstruction of 110 kV overhead cable line (OCL) from Tyumen CHPP-2 to Ozhogino.

Feeders of 110 kV OHL to Tyumen CHPP-2 (length 2 x 1.03 km) are connected by replacing the previous AC-120/19 line with the new generation aluminium composite reinforced cable ACCC Brussels 430 manufactured by Lamifil (USA, Belgium).

Feeders of 110 kV OHL to SS Ozhogino, length 0.57 km (Circuit 1) and 0.69 km (Circuit 2), are connected by aluminium composite reinforced cable ACCC (Aluminium Cable Composite Core) Oslo 325.

Conductivity of ACCC cable is 1.87 times higher than that of conventional cables of the same weight. This was achieved by using higher conductive heat-treated aluminium cores. This has enabled reduction in network losses, and increase in distributed power. ACCC cables are manufactured with a composite core with low thermal expansion rate, which provides higher resistance of the cable as compared to other cables and decreased slack when using high power transmission mode. Use of ACCC cables with improved mechanical performance such as corrosion resistance, low aerodynamic coefficient, self-damping ability and minimum slack allows minimizing allocation of lands for OHL, using shorter towers than would be required for other types of cables, and ensure greater reliability of cables and lines in general.

In the field of energy saving and better energy efficiency, on the basis of the Long-Term Development Program for Electricity Metering Systems, JSC Tyumenenergo has been implementing activities on establishment of electricity metering systems for expected connections and metering systems at the Company substations.

Such smart metering systems have wide-ranging functionality:

  • Power profile;
  • Load control function;
  • Equipment with built-in data collection and transmission modules;
  • Electricity quality control;
  • Multi-rate function.

Smart metering system is a software and hardware complex, which includes electric power meters, data collection and transmission devices, data collection centres, and users` workplaces.

Data from electric meters to data collection and transmission devices is transmitted directly via the power circuits and radio channels, which eliminate the need for interface lines.

Further, the data is transmitted to the collection centre via GSM/GPRS channels.

In 2014, Echelon Corporation`s metering systems were introduced in Ishim and Yuzhny TDs of the Tyumen Electric Grids branches, and Concern Energomera is metering systems in Tobolsk and Tyumen TDs of Tyumen Electric Grids branches.

At the same time, in order to test metering systems of other manufacturers and find optimum solutions, pilot projects of various manufacturers are being implemented on a small scale. In 2014, when establishing and upgrading retail electricity market metering points, Tyumenenergo` s branch Tyumen Electric Grids introduced metering system “Mir” (Omsk) as a pilot project at 10/0.4 kV transformer substation, with additional telemetry functions.

Metering system “Mir” operates simultaneously and independently in two modes — Automated Dispatch Control System (ADCS) and Automated Information System of Electricity Billing Metering (AISEBM).

In ADCS mode, the system provides:

  1. Proactive transmission of alarms when crossing the pre-set set points on voltage, current and power in real-time mode (GPRS mode and/or using SMS);
  2. Control of TS meters MIR 03 inputs and TL/PP expansion modules and proactive message transmission in the event of feeders cut-offs and activation of fire alarm and security sensors;
  3. Receiving and issuing remote control commands to/from switching units (TS, PTS);
  4. Transfer of U, I, P current data, condition of TL upon request from Network Control Centre (NCC) (Dispatching Unit (DU) );
  5. Reservation of data collection — use of 2 meters with built-in GSM communicator with the ability to interrogate expansion modules of TL/PP via the second (reserve) meter.

In AISEBM mode, the system provides:

  1. Electricity billing metering/metering in multi-rate mode.
  2. Forming loss profile from asymmetric load in TS, PTS power transformers and load losses profile.
  3. Control of electricity quality — established voltage deviations and frequency deviations.
  4. Time coordination system — meters time synchronization.
  5. Proactive transmission of alarms as per occurrences of unauthorized access to the meter.

To reduce the number of interrogation programs of different manufacturers and to establish a single Top-Level Data Processing System (later — TLDPS), it has been decided to conduct interrogation and data processing by means of a unified software package, to which end Prosoft-Systems were commissioned to develop the software Energosfera with a view to compatibility with the new metering systems.

The requirement for conducting interrogation by a unified TLDPS was included in the scope of work for new systems.

Efficiency of AISEBM REM during this period shows a decrease in business losses.

Creation of a smart electricity (potential) metering systems in JSC Tyumenenergo grids allows it to promptly and effectively provide all participants of the electricity market with reliable and legitimate information about the actual movement of commodity industrial (electricity and power) required for operation of the wholesale and retail electricity markets.

These activities relate to those in the area of assimilation of novel technologies on introduction of effective innovative industrial developments (technologies, equipment, services) implemented in the form of new or improved technologies, products and services introduced in the market and used in practical activities of the Company.