An expert system for on-line security - economic load allocation on distribution systems

Journal Article · Mon Jan 01 04:00:00 EST 1990 · IEEE (Institute of Electrical and Electronics Engineers) Transactions on Power Delivery; (USA)

DOI:https://doi.org/10.1109/61.107314· OSTI ID:5100912

Chang, C S; Chung, T S ^[1]

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1. Dept. of Electrical Engineering, Hong Kong Polytechnic (CN)

This paper describes the development of a knowledge-based (KB) on-line consultant which assists power-system operators in a distribution SCADA environment. In particular, the allocation of loads to out-going feeders during the normal state is performed as a preventive measure for minimizing overloads of apparatus following a fault on a sub-station. By performing this, load distribution to the four main busbars of a typical 132/11kV zone-substation is distributed to a pre-determined nominal ratio. After the contingency tripping of one 132/11kV transformer, switching of busbar interconnectors and bus-sectioning switches (busbar re-configuration) could then be carried out at relative ease, without exceeding the sub-station's firm capacity for interrupting supply to consumers. It is essential in this policy to maintain this pre-fault load distribution on busbars in order to prevent overload of any apparatus during and after switching. This is achieved during the planning state by appropriate load allocation to feeders and distribution of firm-capacity to zone substations; and during operation by load transfers between out-going feeders and zone substations.

• OSTI ID: 5100912
• Journal Information: IEEE (Institute of Electrical and Electronics Engineers) Transactions on Power Delivery; (USA), Journal Name: IEEE (Institute of Electrical and Electronics Engineers) Transactions on Power Delivery; (USA) Vol. 5:1; ISSN 0885-8977; ISSN ITPDE
• Country of Publication: United States
• Language: English

Related Subjects

24 POWER TRANSMISSION AND DISTRIBUTION
240201* -- Power System Networks
Transmission & Distribution-- AC Systems-- (1990-)
29 ENERGY PLANNING, POLICY, AND ECONOMY
296000 -- Energy Planning & Policy-- Electric Power
99 GENERAL AND MISCELLANEOUS
990200 -- Mathematics & Computers
COMPUTERIZED CONTROL SYSTEMS
COMPUTERS
CONTROL SYSTEMS
DIGITAL COMPUTERS
ELECTRICAL EQUIPMENT
ELECTRICAL FAULTS
ELECTRONIC CIRCUITS
ENERGY SYSTEMS
EQUIPMENT
EXPERT SYSTEMS
KNOWLEDGE BASE
LOAD MANAGEMENT
MANAGEMENT
MICROCOMPUTERS
ON-LINE MEASUREMENT SYSTEMS
ON-LINE SYSTEMS
OPTIMIZATION
OVERVOLTAGE
PERSONAL COMPUTERS
POWER DISTRIBUTION SYSTEMS
POWER SYSTEMS
PROGRAMMING LANGUAGES
PROLOG
SWITCHING CIRCUITS
TRANSFORMERS