Cogeneration Control Systems for Combined Heat and Power Applications

Russelectric, a Siemens business, has introduced a range of UL-listed cogeneration systems designed for combined heat and power (CHP) applications. The power control switchgear targets mission-critical facilities such as healthcare centers, research campuses, and industrial sites to manage parallel electrical power generation and thermal heat recovery.

System Control and Paralleling Architecture
The cogeneration systems feature programmable logic controller (PLC) management and are fully compatible with supervisory control and data acquisition (SCADA) networks. The electrical architecture provides active synchronization, soft loading, and paralleling control for utility and generator assets. To ensure grid compliance and operational safety, the systems utilize a utility-approved interconnecting protective relay framework. The switchgear can be configured to operate in parallel with the main utility grid, allowing operators to dynamically optimize the balance between electrical power distribution and heat recovery operations.

Manufacturing and Component Specifications
The structural and electrical components, including enclosures and busbars, are fabricated and fully assembled within Russelectric manufacturing plants. The hardware integrates utility-grade protective relays and instrumentation to guarantee measurement accuracy across the network. For physical control, the panels utilize heavy-duty, switchboard-type control switches rated at a minimum of 25 amps. The system integrates UL-listed, draw-out power circuit breakers equipped with stored-energy closing mechanisms. These breakers provide a maximum 5-cycle closing speed, which is necessary for reliable and precise power paralleling.

Additional Context: This section details technical specifications and competitive benchmarking not included in the original product announcement
In the combined heat and power (CHP) switchgear sector, achieving a maximum 5-cycle closing time for power circuit breakers is a critical benchmark for synchronous paralleling. When transitioning loads between a localized generator set and the utility grid, phase angle, voltage, and frequency must align perfectly to prevent out-of-phase paralleling, which can cause severe mechanical stress on the alternator shaft and electrical transients. Competitors such as ASCO Power Technologies and Eaton offer similar utility-grade paralleling switchgear. The use of draw-out circuit breakers, as integrated in the Russelectric system, provides a distinct maintenance advantage in mission-critical facilities, allowing technicians to physically isolate, remove, and swap breaker units for maintenance without requiring a complete shutdown of the switchgear bus.

Edited by Lekshman Ramdas, Induportals editor – adapted by AI.

www.russelectric.com