Optimal reactive planning with security constraints
- National Grid Co. plc, Leatherhead (United Kingdom). Technology and Science Div.
- National Grid Co. plc, Coventry (United Kingdom)
- Brunel Univ., Uxbridge (United Kingdom)
- Univ. de Nancy, Vandoeuvre-les-Nancy (France)
The National Grid Company (NGC) of England and Wales has developed a computer program, SCORPION, to help system planners optimize the location and size of new reactive compensation plant on the transmission system. The reactive power requirements of the NGC system have risen as a result of increased power flows and the shorter timescale on which power stations are commissioned and withdrawn from service. In view of the high costs involved, it is important that reactive compensation be installed as economically as possible, without compromising security. Traditional methods based on iterative use of a load flow program are labor intensive and subjective. SCORPION determines a near-optimal pattern of new reactive sources which are required to satisfy voltage constraints for normal and contingent states of operation of the transmission system. The algorithm processes the system states sequentially, instead of optimizing all of them simultaneously. This allows a large number of system states to be considered with an acceptable run time and computer memory requirement. Installed reactive sources are treated as continuous, rather than discrete, variables. However, the program has a restart facility which enables the user to add realistically sized reactive sources explicitly and thereby work towards a realizable solution to the planning problem.
- OSTI ID:
- 367359
- Report Number(s):
- CONF-950525-; TRN: IM9640%%105
- Resource Relation:
- Conference: IEEE power industry computer applications conference, Salt Lake City, UT (United States), 7-12 May 1995; Other Information: PBD: 1995; Related Information: Is Part Of 1995 IEEE power industry computer application conference: Proceedings; PB: 588 p.
- Country of Publication:
- United States
- Language:
- English
Similar Records
OPF for reactive pricing studies on the NGC system
Security constrained optimization - A case study