SVC for reliability improvement in the NSTAR 115 kV cape cod transmission system

Author

Bostrom, Arne ; Grunbaum, Rolf ; Dahlblom, Marie ; Oheim, Henry V.

Author_Institution

FACTS, ABB AB, Vasteras, Sweden

fYear

2013

fDate

21-25 July 2013

Firstpage

1

Lastpage

5

Abstract

NSTAR Electric Company is operating an ABB SVC on its 115 kV transmission system in Massachusetts, to supply fast-acting voltage support to the transmission system on Cape Cod in the event of loss of two major transmission lines. The system is fully automated to activate and inject reactive power when the transmission system voltage falls below a specified set point. A large part of the area load consists of induction motor loads. A goal of the SVC is to help re-accelerate motor loads after grid faults. The paper describes the transmission system characteristics leading to the decision to invest in SVC. Secondly, it highlights the SVC, as well as offers a few words on RTDS studies to confirm the functionality of the SVC. Thirdly, some operating experiences of the SVC are given demonstrating the usefulness of the SVC under normal operating conditions.

Keywords

induction motors; power grids; power transmission lines; power transmission reliability; static VAr compensators; ABB SVC; NSTAR Electric Company; cape cod transmission system; grid faults; induction motor loads; normal operating conditions; reactive power; reliability improvement; static Var compensator; transmission lines; voltage 115 kV; Control systems; Induction motors; Reactive power; Static VAr compensators; Thyristors; Valves; Voltage control; Dynamic Voltage Support; Fast Voltage Collapse; Fault Induced Delayed Voltage Recovery (FIDVR); Induction Motor Load; Static Var Compensator;

fLanguage

English

Publisher

ieee

Conference_Titel

Power and Energy Society General Meeting (PES), 2013 IEEE

Conference_Location

Vancouver, BC

ISSN

1944-9925

Type

conf

DOI

10.1109/PESMG.2013.6672551

Filename

6672551