Power System Data Communication Architecture at BC Hydro

摘要

BC Hydro is a provincially-owned Crown corporation providing generation, transmission and distribution service to 1.5 million customers over 74,000 km of transmission and distribution lines. Generation consists of approximately 10,000 MW of hydro and 1,000 MW of gas-fired thermal generation. The BC Hydro system can be characterized as having a major load centre connected to remote generation over long series compensated EHV transmission lines. The System Control Centre in Burnaby, BC is responsible for automatic generation control and reliability of the main 500 KV grid. The four Area Control Centres located throughout the province are responsible for the operation and maintenance procedures on the transmission, subtransmission and distribution networks in their respective areas. Only two generating plants are staffed on a 7×24 basis; all other facilities are either not attended at all or not attended for most of the week. There are about 150 Remote Terminal Units (RTU) and another 150 older remote supervisory and telemetry systems. All generating plants and major substations have separate RTUs and/or remote supervisory and telemetry systems reporting to both the System and Area Control Centres.