Mitsubishi Electric Power Products, Inc. Electrical Distribution Division has entered the flexible alternating current transmission system (FACTS) market with the introduction of a utility-scale distributed power electronics solution. The Grid CoRe™ (Correction and Regulation) series of products are designed specifically to meet the utility challenges of distributed generation, two-way power flow, volt-var optimization, and conservation voltage reduction (CVR).
At the heart of each Grid CoReâ„¢ unit is an advanced three-phase static synchronous compensator (STATCOM). Leveraging the reliability of Mitsubishi Electric insulated gate bipolar transistor (IGBT) modules and modular multilevel converter architecture, Grid CoReâ„¢ provides sub-cycle volt-var optimization combined with additional grid support features including voltage phase balancing and harmonic mitigation.
Outperforming conventional equipment such as reactors, shunt capacitors and load tap changers, Grid CoReâ„¢ combines these critical functions into a single unit for a more stable grid and improved recovery after a transient event.
â€œMvar-sized FACTS devices are required to support grid stability at the transmission level. By moving into the primary distribution network, Mitsubishi Electricâ€™s Grid CoReâ„¢ solution can have a significant impact on MVA-sized feeders with kvar-sized devices,â€ stated Kevin Goldstein, engineering and development manager for the Electrical Distribution Division of Mitsubishi Electric Power Products, Inc.
Utilizing a decentralized solution, Grid CoReâ„¢ is available, up to 2,000kvar, in building blocks of 500kvar units. Supporting the primary distribution grid up to 46kV, this decentralized model allows the utility to target a specific localized grid issue.
â€œBy strategically applying Grid CoReâ„¢ units, utilities can dynamically change the active voltage profile along an entire feeder, by requiring up to 20 percent less total kvar than a centralized solution,â€ Goldstein commented.
â€œWith more than 30 years of electrical equipment experience, Mitsubishi Electric is poised to meet the modern needs of utilities by supporting distributed energy sources,â€ said Goldstein. â€œBy applying advanced Grid CoReâ„¢ technology, our customers can avoid costly reconductoring and remedy voltage violations within their distribution system.â€