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 The CWLP electric system's transmission network consists of lines and associated substations operating at voltages of 138 kV, 69 kV, and 34.5 kV.

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The 138 kV portion of the transmission network currently includes approximately 63 circuit miles of overhead lines forming a complete loop around the system's service area. The purpose of the 138 kV network is to provide:

  • generator outlet capacity for CWLP's Dallman 3 unit and the main peaking turbine,
  • bulk power supply to the lower voltage portion of the transmission network,
  • a direct supply to six distribution substation transformers, and
  • interconnections with other utilities.

The 138 kV transmission lines presently serve nine of the system's substations or switching stations, plus the village of Chatham, Illinois.

A portion of the 69 kV transmission network was originally installed in 1956, and now consists of approximately 65 circuit miles of overhead lines serving 23 distribution substations. There are five 80,000 KVA transformers connecting the 138 kV system to the 69 kV system.

CWLP has five ties to the electrical transmission grid, one at 345 kV, three at 138 kV, and one at 69 kV.

The system's distribution network consists of approximately 555 circuit miles of overhead 12.47 kV and approximately 440 circuit miles of underground 12.47 kV facilities.

DISPATCH CENTER
SUBSTATIONS
POWER QUALITY
GEOGRAPHICAL INFORMATION SYSTEM
RESTORING ELECTRIC SERVICE
TIES TO GRID
EXCESS POWER SALES

 

Last update : 03/05/08

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