Active power distribution network distribution robust reactive power optimization method in consideration of DG reactive power support and switch reconstruction

Abstract

The invention discloses an active power distribution network distribution robust reactive power optimization method in consideration of DG reactive power support and switch reconstruction. With the total network loss of the system in each period as an optimization objective and with regulation restrictions of equipment such as a substation OLTC and a discrete and continuous reactive power compensation device as constraint conditions, switch correlation modeling is included, the power grid radioactivity and the non-isolated island operation condition are thus ensured, the capacity curves of a double-fed fan and a micro gas turbine are modeled in details, the DG reactive power support capability is thus integrated, the linearization method with active and reactive power output coupling characteristics is also designed, and thus, the model can be quickly and reliably solved. A decomposition algorithm is used to decompose the model to a main problem and a sub problem for repeated iterativesolution, the solution speed can be quickened, and through carrying out equivalent conversion on absolute value constraint conditions, the solution problem is converted to a mixed integer programmingproblem, and the existing solution kit CPLEX is adopted for effective solution.

Description

technical field [0001] The invention relates to the technical field of active distribution network distribution robust reactive power optimization, in particular to a method for active distribution network distribution robust reactive power optimization considering DG reactive power support and switch reconstruction. Background technique [0002] In recent years, the vigorous development of distributed generation (DG) such as wind and solar has brought new challenges to reactive power optimization of active distribution networks. Traditional stochastic optimization and robust optimization methods have problems such as one-sidedness or conservatism in dealing with clean energy uncertainties. Based on this, the present invention constructs a distributed robust reactive power optimization model of the active distribution network that takes system network loss as the optimization target and considers DG reactive power support and switch reconfiguration. In addition to tradition...

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Problems solved by technology

Traditional stochastic optimization and robust optimization methods have problems such as one-sidedness or conservatism in dealing with clean energy uncertainties

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