Method for calculating electrical load center vector of building engineering and design method of substation

Abstract

The invention provides a method for calculating an electrical load center vector of building engineering. An electrical load center is quantified and calculated by using a minimum load moment method,and the best theoretical position of a substation is obtained. The method specifically includes the steps of (1) setting a calculation premise of the calculation method: electrical lines are laid according to three axes, and (2) for a system which is not fully balanced, decomposing a set of loads into coordinate systems of the three axes except for a perfectly balanced system according to a law the coordinate points (x, y, z) of an optimal load center under a warp and weft column net fall on coordinate points corresponding to axes of some loads, and finding a point that the sum of load momentsof all loads to the point is the smallest such that the obtained point is the optimal load center of the system and the coordinate points are corresponding to the best theoretical position of the substation. The design method of the substation based on the method is also disclosed, the power supply area and a load capacity of a scientific substation are determined, the problems that the capacityof the substation is too large, the capacity of a single unit is too large, the system is too concentrated and the energy consumption is lost are overcome, and combined with a load distribution state,a system power supply idea of power supply by a plurality of small-capacity substations is formed.

Description

technical field [0001] The invention relates to the technical field of power systems, in particular to a method for calculating an electrical load center vector and a method for determining the quantity and location of substations according to the calculation method. Background technique [0002] The design of substation belongs to the design of electrical system. Its purpose is to set up a suitable electrical system through load analysis and find out the minimum total load moment of the system to achieve the purpose of energy saving. Usually, the substation is set in the load center, which can reduce power distribution loss and minimize line voltage drop, that is, the highest power efficiency. The previous substation design has the following disadvantages: [0003] (1) The load center is only a qualitative analysis without quantitative calculation; [0004] (2) Even if there is a rough quantitative calculation, the accuracy of the method is still to be determined. [000...

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Problems solved by technology

[0033] The technical problem to be solved by the present invention is to provide a construction engineering electrical load center vector calculation method and a substation design method based on the method for the above-mentioned deficiencies in the prior art. The construction engineering electrical load used in the design method The vector calculation method of the center is calculated according to the minimum load moment of the system. Through the comparison of t

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