Dispatch of capacitors on distribution system using dynamic programming

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Dispatch of capacitors on distribution system using dynamic programming

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© The Institution of Electrical Engineers
Published

The dispatch of capacitors on a distribution feeder in daily system operation is investigated. The objective is to reach an optimal capacitor dispatching schedule, based on the forecast hourly loads for the next day, such that the total feeder loss in a day is minimised. The constraints that must be taken into account include the maximum allowable number of switching operations in a day for each capacitor, and the voltage limits on the feeder. An approach based on dynamic programming is presented to reach such an optimal schedule. To demonstrate the effectiveness of the proposed approach, the dispatch of capacitors on a distribution feeder within the service area of Taipei West District Office of Taiwan Power Company is investigated. It is concluded that a greater loss reduction can be achieved by the optimal capacitor dispatch than by the fixed-schedule dispatch.

Inspec keywords: dynamic programming; load dispatching; digital simulation; power capacitors; power system analysis computing; distribution networks; scheduling

Other keywords: Taiwan; digital simulation; voltage limits; load dispatching; dynamic programming; power capacitors; load forecasting; distribution system; feeder loss; switching operations

Subjects: Distribution networks; Optimisation; Power system management, operation and economics; Optimisation techniques; Other power apparatus and electric machines; Optimisation techniques; Power engineering computing

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