Field experience with the new platform-mounted DVR/sup TM/

Abstract

Installation of the world's first Platform-Mounted Dynamic Voltage Restorer (DVRTM PM) prototype on a major North American utility system to protect a critical customer load from power system voltage disturbances ushers in a new era of power quality solutions available for overhead distribution systems on the utility side of the revenue billing meter. The DVRTM PM built by Siemens for the Electric Power Research Institute (EPRI) was installed at the Northem Lights Community College in Dawson Creek, B.C. where it provides protection for 600 KVA of load from disturbances coming from the utility 25-kV distribution system that serves the college.The early success of the DVRTM PM demonstration in Canada has implications for the Australian market where in excess of 90% of the 11 and 22 kV networks are bare conductor overhead lines. As a consequence, customers are exposed to the voltage sags that the DVRTM is designed to mitigate. Smaller critical customer loads can now be offered improved power quality network solutions on the 11 or 22 kV distribution systems that were not previously available. In Victoria alone, there are approximately 14,000 customers (or groups of commerciatlindustrial customers) who would benefit from such a network solution. This paper describes the DVRTM PM and the demonstration project installation, commissioning, and field operation to date. Future equipment designs are also discussed.

Development of power conditioners and controllers for microgrids

“…Nanyang Technological University Library the PCC. During a downstream faul~, passive control method is often used to control the DVR by enabling the bypass circuit (usually a slow mechanical bypass together with a fast solid-state switch)[68,70,71] and protecting the DVR from the fault current, while allowing the• large fault current to flow which could cause the PCC voltage to drop.Active control of series connected device during a fault by limiting the fault current is reported in[72,73] and Chapter 5. Compared to the passive protection of DVR, active control of DVR during a downstream fault makes the additional protection circuits unnecessary and the implementation easy.…”