A distributed on-line HV transmission condition monitoring information system
- Hong Kong Polytechnic Univ., Kowloon (Hong Kong)
- China Light and Power Co. Ltd., Hong Kong (Hong Kong)
- City Univ. of Hong Kong, Kowloon (Hong Kong)
China Light and Power Company Ltd. (CLP) is responsible for supplying electricity to the whole of Hong Kong except Hong Kong Island and Lamma Island. In CLP`s Castle Peak power plant, 19 kV and 23 kV electric supplies are generated. The voltage is then stepped up to 400 kV for transmission. The intermediate control between those transformers and the major 400 kV overhead transmission system lies with a standard One and a half Breaker Configuration switch substations. The substation houses single phase encapsulated SF{sub 6} circuit breakers. In the urban centers, 400 kV substations are installed to step down 400 kV to 132 kV or further to 11 kV for distribution. This paper describes the development of a on-line distributed information system for monitoring the conditions of the whole HV transmission system. The system continuously monitors status of each circuit breaker (CB) together with important operational parameters, such as duration during making and breaking, operations of hydraulic pumps and SF{sub 6} gas pressure etc. Each group of CBs is monitored by a standalone microcontroller using a local area network with a baud rate of 9,600. The information can be recorded on the harddisk of an on-site microcomputer and further transmitted back to a remote computer for alarm generation and multi-station supervision. The CLP 400 kV substation and the Tsz Wan Shan 400 kV substation are among the first targets for development.
- OSTI ID:
- 492187
- Report Number(s):
- CONF-9609171-; ISSN 0885-8977; TRN: IM9730%%66
- Journal Information:
- IEEE Transactions on Power Delivery, Vol. 12, Issue 2; Conference: IEEE/PES transmission and distribution conference and exposition: a crossroad of technology and change, Los Angeles, CA (United States), 15-20 Sep 1996; Other Information: PBD: Apr 1997
- Country of Publication:
- United States
- Language:
- English
Similar Records
Requirements for gas-insulated equipment through 1980
Development of 1200-kV compressed-gas-insulated transmission and substation equipment in the United States