Static VAR generator

• US 4,348,631 A
• Filed: 06/04/1981
• Issued: 09/07/1982
• Est. Priority Date: 06/04/1981
• Status: Expired due to Term

• Current Assignee: Westinghouse Electric Corporation (Paramount Global (f/k/a ViacomCBS Inc.))
• Original Assignee: Westinghouse Electric Corporation (Paramount Global (f/k/a ViacomCBS Inc.))
• Inventors: Wood, Peter, Gyugyi, Laszlo
• Primary Examiner(s): Shoop, William M.
• Application Number:
  US06/270,470
• Time in Patent Office: 460 Days
• Field of Search: 323/210, 323/211
• US Class Current: 323/211
• CPC Class Codes: H02J 3/1828 with stepwise control, the possibility of switching in or out the entire compensating arrangement not being considered as stepwise control
• CPC Class Codes: Y02E 40/10 Flexible AC transmission systems [FACTS]
• CPC Class Codes: Y02E 40/30 Reactive power compensation

Abstract

This invention discloses a novel means of inserting capacitance into an AC network for power factor correction or voltage regulation that minimizes and transient disturbances to the system. Current surges and voltage transients that are normally associated with connection of capacitors into an AC network is minimized by predetermining an amount of inductance that must be inserted to suppress these transients and simultaneously inserting the inductance into the network with the capacitance.

Claims

1. A static var generator, comprising:

(a) a reactance means disposed for connection into an AC network;

(b) a monitoring means for monitoring the reactive requirements of said AC network;

(c) a control means connected to said reactance means and said monitoring means for connection of said reactance means into said AC network in response to the reactive requirements of said AC network; and

(d) an error adjusting circuit in combination with said control means disposed to predetermine an amount of capacitive surging current and connect an inductive reactance in synchronism with capacitive reactance to suppress said capacitive surging current resulting in minimizing voltage transients in said AC network.