Power Plant Restoration
This restoration project involved bringing a sixties-era hydroelectric power plant back to operational status following a major fire that destroyed the infrastructure of the plant requiring the plant be completely gutted, cleaned, significant repairs performed to the concrete structure, and a total refurbish/rebuild of the generating/pumping units. PPE was contracted to perform a number of tasks during the restoration, one of which was the complete design and specification of the new protection system at the plant, including updates to the 230kV switchyard which is positioned away from the plant – though not damaged during the fire, it was a good time to update aging equipment.
- Project Management
- Protection System
- Design & Specification
- Bill of Material (BOM) Development & Purchasing
- Device Settings
- Instrument Transformer Testing
- Grounding System Testing
- Power Line Carrier (PLC) – new Traps, Tuners, PTs, and transmitters and receivers.
- HMI Integration
- Commissioning Support
- Protection Cabinet Layout
- Single-Line & 3-Line Diagrams
- Connection Diagrams & DC Schematics
- Communications Overview
- Arc-Flash Mitigation
- NERC PRC-002 (Disturbance Monitoring) Compliance
Here’s the plant following extensive cleanup. Though the fire occurred on the lower levels of the plant, the smoke from the fires was very corrosive and all generating units had to be removed and refurbished.
Our technician assists plant personnel with testing of all current transformers from the power plant. Testing was done to verify the CTs were serviceable and weren’t damaged by the fire or degraded with age.
While the power plant is offline for an extended period the client is upgrading their entire powerline carrier system. PPE specified new traps, tuners, PTs, and transmission/receiving equipment for the PLC.
PPE checked every grounding point in the plant in addition to performing high-current injection testing and earth resistivity testing. There was concern regarding the condition of embedded/buried conductors due to the intense fire and age of the facility.