Mykolaiv Combined Heat and Power Plant

Mykolaiv CHP is an urban combined heat and power facility supplying both electricity and district heat — roughly 40 MW of electrical capacity and 410 Gcal/h of thermal capacity. After damage and equipment obsolescence had left the 6–35 kV substation in a fragmented state, the project restored and modernised its electrical distribution and automation systems, folding a set of isolated repair tasks into one coordinated protection-and-automation solution.

• Restored relay-protection functions on 6–35 kV switchgear and reconstructed the automation required for dependable operation of the substation after damage and equipment obsolescence.
• Developed automated circuit-breaker protection and control logic, including trip supervision, breaker-status processing, interlocking and the backup actions required by the switchgear protection philosophy.
• Implemented a dedicated automation controller for switchgear control, operational interlocks and sequence handling, providing a consistent interface between field devices and the supervisory control layer.
• Reconstructed protection and control circuits across the 6–35 kV substation, including binary signal processing, breaker commands, alarm logic and equipment-state supervision.
• Integrated the restored switchgear automation with plant-level control and monitoring, validating indications, commands and alarm transmission between the substation and operator systems.
• Supported the broader technical reconstruction of the 6–35 kV substation, combining protection, breaker automation and control engineering into a single coordinated solution.

The project transformed isolated restoration tasks into a coherent protection-and-automation system. The emphasis was on operational safety, clear breaker-state logic, dependable trip paths and maintainable control functions across the reconstructed substation.