RE: Why is objective function in negative

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Re: question about ORPD

Run an OPF with the active power constrained to their set points (PMIN=PMAX=desired PG) on all but the slack bus. This will minimize the slack bus generator cost, which minimizes the slack bus generation, i.e. minimizes system losses, all by optimizing the reactive power generation and voltage

Re: Why is objective function in negative

Hi Maliha, When using dispatchable loads, the objective function value includes a large “negative cost” to represent the value of serving the dispatchable load. If all load is dispatchable, you could think of the objective function value as the negative of the social welfare. If you want to co