Power Regulating Transformer for DER Integration and Energy Efficiency

Gridco Systems has launched the Power Regulating Transformer (PRT). The single-phase 50kVa pad-mounted multi-function device is designed for North American distribution utility use in edge-of-grid applications for more actionable control.

The first commercially available product of its kind, the PRT combines a best-in-class pad-mounted distribution transformer with a power electronics-based Gridco Systems In-line Power Regulator™ (IPR), packaged in an integrated assembly for installation on existing distribution transformer pads. The PRT-50 provides distribution utilities with a new tool to more effectively integrate Distributed Energy Resources (DER), enhance Conservation Voltage Reduction (CVR) and peak demand management programs, assure power quality to sensitive customer equipment, and increase overall system reliability.

Applications

DER Integration: manage power fluctuations, including voltage rise and harmonics, caused by variable residential and utility-scale DER
Enhanced Power Quality: compensate for sags, swells and harmonics to prevent impact to sensitive customer equipment, extend customer and utility asset life, and prevent system-wide failures
CVR/VVO: enhance new or existing CVR/VVO schemes to achieve the highest possible system efficiency, energy savings, and peak demand reduction to alleviate capacity constraints, without relying on third-party programs or customer behavioral changes

Features and Benefits

Load Voltage Regulation: continuously regulates load voltage across a wide range (boost and buck, ±10%), in both forward and reverse power flow
Sag/Swell Mitigation: fast response protects sensitive loads from voltage sags and swells caused by grid disturbances
High Efficiency: power electronics subsystem has greater than 99% efficiency, thanks to the low-loss topology of Gridco's IPR
Reactive Power Compensation: regulates power factor by dynamically injecting or absorbing reactive power
Harmonic Cancellation: actively corrects source-current and load-voltage harmonic distortion
Dynamic and Precise: responds in sub-cycle timescales and operates continuously and precisely
Power Quality Monitoring: enables high-resolution PQ monitoring via integrated voltage and current sensors
Transformer Monitoring: provides top oil temperature information and tracks loading conditions
Pad-Compliant Footprint: installs as a conventional distribution transformer using standard concrete pad designs, utilizing existing transformer locations
Operational Flexibility: operates autonomously or can be integrated into utility SCADA/DMS systems and/or the Gridco Systems Grid Management and Analytics Platform™ (GMAP) using the built-in Gridco Systems Distributed Grid Controller™ (DGC)
Utility-Grade: purpose-built to withstand outdoor environments for 25 years, employing ruggedized and passively cooled power electronics for high reliability and maintenance-free operation; supports non-disruptive failure-to-normal and in-field replacement of active regulation subsystem