Brovary, 4.5 MW cogeneration system
This project became an example of the effective transformation of outdated infrastructure into a modern power plant capable of operating under critical loads and blackouts.
The main challenge was to place powerful power generating equipment in the existing outdated boiler house building. The facility required a complete reconstruction taking into account new overall and vibration loads, as well as integration into the complex architecture of the city.
Technical solution
The project involved the installation of three cogeneration units with a capacity of 1.5 MW each. The system is designed to operate in two modes:
- Parallel mode: Operation synchronously with the state power grid to optimize costs and power output.
- Island mode: Complete autonomy of the facility, allowing the enterprise or district to be supplied with energy even in the complete absence of external power.
We acted as a general designer and engineering consultant, providing full support:
1. Design and permitting documentation
- Obtaining Technical Conditions: Full support for the procedure for interaction with operators of regional energy and regional gas distribution systems.
- Development of project sections:
- EP: Power output scheme and internal electrical equipment.
- GP: Adaptation of old buildings to new technological needs.
- TX: Integration of gas piston engines into the boiler house heat supply system.
- AS: Strengthening the structures of the old building for the installation of units.
- AT automation and fire protection systems
2. Calculations of the electrical part
To ensure the stability of the “island” and the safety of parallel operation, our engineers performed a complex of precision calculations:
Calculation of short-circuit currents: For the correct selection of switching equipment.
Static and dynamic stability analysis: Checking the system’s behavior during sudden load changes in offline mode.
Calculation of relay protection selectivity: Guarantee that in the event of a local fault, only the damaged section will be shut down, and not the entire station.
Reactive power balance: Optimization of generator operation to avoid penalties and equipment overheating.
3. Network design and equipment selection
- Development of projects for external and internal electrical networks (0.4/10 kV).
- Technological selection: We selected the optimal cogeneration modules, heat recovery systems and auxiliary equipment that meet the requirements of energy efficiency and limited building space.