Company History
SHVTG-600-200-1.6-UHL4
How It All Began
SPC Technologies LLC was founded on August 9, 1995, by specialists in power conversion technology from OJSC “Research Institute ‘Preobrazovatel’” (Zaporizhzhia, Ukraine).
The company brought together professionals in the development, manufacturing, testing, and research of modern power conversion devices for the electric power industry and industrial applications.
In 2005, company specialists developed, manufactured, and commissioned the first self-excitation system with microprocessor control in the CIS — SSTЕ-2100-465-2.5-UHL4 — for the TGV-200 turbo-generator at Unit No. 11 of Burshtyn TPP.
This system was equipped with a reliable oil-filled transformer TMPV-3000/15-U1 manufactured by PJSC “VIT” (Zaporizhzhia), which proved its reliability in outdoor operation under Ukraine’s climatic conditions.The first production excitation system SSTЕ-2100-465-2.5-UHL4, equipped with a TMPV-3000/15-U3 power transformer, was commissioned at Unit No. 11 of Burshtyn TPP in 2006. That same year, it successfully passed certification by the Ministry of Fuel and Energy of Ukraine and was recognized as meeting the technical level of excitation systems produced by leading global manufacturers.
In 2007, following the deployment of the first excitation system of its kind in the CIS at Burshtyn TPP, a group of excitation system developers led by the head of the relevant division of Power Machines JSC (Saint Petersburg) was sent to study the experience of SPC Technologies LLC. In September 2016, the SSTЕ-2100-465-2.5-UHL4 excitation system underwent refurbishment and modernization of the first power channel and, after successful testing, was recommissioned for continuous operation without any remarks.
Since the commissioning of the first prototype, the company’s specialists have repeatedly refined and upgraded the circuitry and mechanical design of excitation systems, taking into account operational experience and feedback from power plant electrical service teams at TPPs, CHPs, and HPPs. Over this period, more than 30 excitation systems have been manufactured, both independently and in cooperation with other enterprises, including PJSC “Zavod ‘Preobrazovatel’.” One notable example is the excitation system at Ladyzhyn TPP, where SPC Technologies LLC acted as the manufacturer of the control cabinet, developer of the software, and author of the complete design documentation for the excitation system.
In 2015, the SSTP-3500-465-2.5–UHL4 self-excitation system was successfully commissioned at Unit No. 1 of the Ladyzhyn Thermal Power Plant. The power section of this excitation system was implemented using highly efficient tablet-type cooling elements and includes dedicated air filters for purification of the cooling air. The power conversion oil transformer TMPV-4000/20-U3 for the excitation system was manufactured by PJSC “VIT”. In 2018, under a separate contract, specialists of SPC Technologies LLC carried out a comprehensive set of mandatory preventive inspections (Category K1) of this self-excitation system.
In 2010, specialists of SPC Technologies LLC developed and mastered the production of compact inverter-based excitation systems with microprocessor control for turbogenerators and synchronous electric motors.
Starting from August 2019, SPC Technologies LLC became a member of the consortium headed by NVP ENERGO-PLUS LLC. Further development and implementation of excitation systems for turbo- and hydrogenerators were carried out jointly under the coordination of the central office of NVP ENERGO-PLUS LLC, including the following projects:
- 2017-2018 – replacement of the existing single-channel thyristor self-excitation system STS-300-2000-2.5-UHL4 of TG-3 with a dual-channel microprocessor-controlled excitation system of type SSTE-2000-300-2.5-UHL4 (TEKHNOVA LLC, Chernihiv CHP Plant).
- 2019-2021 – replacement of the electromechanical exciter of the TV-60-2 turbogenerator and the ROA-type automatic voltage regulator with a single-group, dual-channel thyristor self-excitation system using (1+1) redundancy schemes, equipped with microprocessor-based automatic voltage regulators (AVR) and monitoring automation (ARM) (EURO-RECONSTRUCTION LLC, Darnytsia CHP Plant, Kyiv), for turbogenerators TG-5, TG-6, and TG-7. For the above-mentioned generators, excitation systems of type SSTE-800-250-2.5-UHL4 were installed and commissioned, incorporating a field suppression system developed under Ukrainian Patent No. 99548. The excitation systems included TSZP-630/10-U3 power transformers (ELTIZ PE) and RZL-01 microprocessor-based relay protection devices (RELSYS SPC). As part of comprehensive testing and commissioning works, thermographic inspections of power thyristor sections and oscillographic recording of electromagnetic processes were performed. During the development of the field suppression system, as well as during the tuning of current, voltage, and reactive power regulators, digital models of the turbogenerator and excitation system components were applied.
- 2021-2023 – development and implementation of an independent thyristor excitation system SNVTG-600-200-1.6-UHL4 under the project “Commissioning of a steam turbine installed at Power Plant No. 3 (CHP-3) in the city of Kharkiv”. Additionally, turbogenerator protection cabinets based on ABB REG 670 terminals and an automatic synchronization system based on ABB SYNCHROTACT 6 SYN6201 were implemented.
Products manufactured by SPC Technologies LLC are equipped with modern in-house developed microprocessor-based control systems built on the STM32(ARM Cortex-M4) controller platform. The use of excitation systems from a domestic manufacturer makes it possible to reduce equipment costs and minimize expenses related to maintenance and modernization due to rapid response to non-standard operating conditions that inevitably arise during equipment operation, as well as through the implementation of a number of standardized modules.
In June 2022, NVP ENERGO-PLUS LLC, acting as the general contractor and involving specialists from SPC Technologies LLC, carried out a full preventive inspection, restorative repair of category K(B), and testing of the SSTP-3500-465-2.5-UHL4 self-excitation system at Unit No. 1 of the Ladyzhyn Thermal Power Plant.
At present, excitation systems jointly developed by NVP ENERGO-PLUS LLC and SPC Technologies LLC, at the Customer’s request, are equipped either with control cabinets using proprietary software or with electronic modules and automatic voltage regulators (AVR) manufactured by EMERSON Corporation (USA). The use of EMERSON AVRs enables integration of the excitation system into a unified unit control complex based on the OVATION distributed control system and allows the application of advanced generator excitation control algorithms. The algorithmic and hardware components of the OVATION DCS are based on hot-standby redundancy technology, incorporate state-of-the-art technical solutions, and are certified within the European Union. The excitation system control based on the OVATION DCS fully complies with the requirements of DSTU 4265:2003 (Excitation systems for turbogenerators, hydrogenerators, and synchronous compensators. General technical requirements) and additionally provides a wide range of service functions, including an event log and an emergency event recorder. Through close cooperation between specialists of EMERSON Corporation, NVP ENERGO‑PLUS LLC, and SPC Technologies LLC, continuous efforts are made to improve excitation system control algorithms and software in order to jointly deliver a high-quality product. To enhance the quality of excitation system manufacturing, during the development of design documentation specialists of NVP ENERGO-PLUS LLC and SPC Technologies LLC employ 3D modeling using one of the world’s leading CAD systems, PTC Creo Parametric.
In 2023–2024, SPC Technologies LLC, jointly with NVP ENERGO-PLUS LLC, based on the Polish enterprises NPP ENERGO-PLUS EUROPE and TWERD ENERGO-PLUS, as well as in cooperation with EMERSON Corporation, manufactured 28 excitation systems for PJSC “UKRHYDROENERGO”.Within the scope of these projects, SPC Technologies LLC was responsible for the development of design documentation, as well as the design and manufacture of individual excitation system components, including power thyristor blocks, thyristor discharge panels, control and synchronization panels, and other subsystems. SPC Technologies LLC also participated in testing excitation system components using its own modern test benches.
