Research On Optimization Of The Grid Structure Of The Distribution Network

Distribution network planning is an important basis for guiding the construction ofthe distribution network, and a reasonable distribution network construction and thequality of the outcome of the grid structure is directly related to social and economicdevelopment, and is closely related to people’s lives. Distribution network planning anddecision-making is a comprehensive assessment of the final link in the distributionnetwork planning is one of the most decisive step, therefore, is worthy of distributionnetwork planning studies and problems to be solved, has great practical value.This paper studies the research work typical supply model, the typical powerdistribution system model number of interconnection substation main transformer stationis configured with two dimensions combined to form2×2,2×3,3×2,3×3,4×2,4×3of six " substation-the main changes," the combination pattern; study a variety ofdifferent sets of wiring several main transformer substations under the low side; mainlystudied the medium voltage distribution grid radiation alone, a single contact, twoliaison, three liaison, N wiring for a standby mode which five wiring.On the basis of a typical power distribution system model, studied the overloadfactor k=1and1.3, in the three types of interconnection substation, a total of6modes,the main variable power supply capacity of the theoretical analysis; and6above threetypes of interconnection substation network power supply capacity under indicatorsmodes were analyzed; choose the model meets the typical power grid developmentcharacteristics of each stage, and the indicators of these types of powered model useseconomic analysis of the different connection modes based on a combination ofqualifying and the different substations and comparison, the preferred outcome typicalsupply model.Combined with the overall framework of each transition-supply scheme underoptimal contact " main transformer substation " combined mode, the vision to build eachspecific network structure optimization and transition plan. In the completion of thedistribution network and new district vision building wiring gives recommendations; andfor the planning of some suggestions.