The Analysis Of Typical Supply Pattern Of Commercial Load

To accumulate experience for grid planning,offer accurate technology and historical data,help to plan the grid more accurate and reasonable,the paper focus on the commerce laod.After selecting the fit sample in the typical load zone, the possible adjustment is made to the sample.Then the investigation to the load characteristic, the power supply present condition and the power supply pattern of the sample is done.The parameter prediction carry on to the adjusted sample.The main electric power quantity parameter( include the electric voltage-drop,voltage deviation rate) is calculate after current flow calculation by the pressed feedback method.The equipments parameters and the short-circuit capacity is computed according to the technique standard.The reliability is analyzed by breakdown mode result analysis method.The economical index is gotten by unit load yearly expenses method.On this foundation, led into the misty evaluation method the sample is comprehensively comparied. The best power supply mode of the high-tension is full radiation. And the best power supply mode of the middle-tension is unequal busbar connection switching house.