STATCOM application at VELCO Essex substation

Abstract

On May 1 st , 2001, the Vermont Electric Power Company, Inc., (VELCO) placed a +133/41 MVA, 115 kV STATCOM system on-line at the Essex Substation located near Burlington, VT. The STATCOM, a Flexible AC Transmission System (FACTS) technology, was installed to provide dynamic voltage support and reactive compensation on the VELCO transmission system. The installation was part of a major transmission system project that also involved the reconfiguration of the Essex 115 kV Substation. This paper provides an overview of the VELCO Essex Substation STATCOM system project, and includes discussion on the power system requirements associated with the application, as well as a description of the STATCOM system design and layout.

STATCOM – A Preface to Power Quality in Power Systems Performance

“…Each output voltage of converter is in phase with line voltage due to small tie reactance linking converter and line. Conventionally two-level VSC are used for STATCOM, however, nowadays multi-level VSC due to its modularity in structure and power handling capability are quickly replacing two-level VSCs for STATCOM [26][27][28][29][30][31][32][33][34][35][36][37][38][39].…”

Identification and quantification of the regulation interaction between two DSTATCOM in a distribution grid

“…Usually the control of these applications are based on the load reactive current control or on the voltage module control in the PCC (Point of Common Coupling). The first is used on substations and generally is coordinated with capacitors banks [9,10]. Thus, it is be able to reduce line reactive energy in presence of hard reactive energy variations and its behaviour is like an independent current source connected to the grid.…”

Novel Approach of PID Control Scheme With UPFC’S for Damping of Oscillations

“…Unified Power Flow Controllers (UPFC) [10]- [11], Convertible Series Compensators (CSC) [12], back-to-back dc ties (VSC-BTB) [13]- [14] and VSC transmission [5]. In addition to these referenced and other applications, there are several recently completed STATCOMs in the US., in the states of Vermont [15]- [16], California and Texas . In addition, there are new1y planned STATCOMs in Connecticut [9] and Texas, as well as a small STATCOM (D-VAR) planned for BC Hydro [10] and several other locations.…”