A real-time control method for branch power congestion in active distribution network

Abstract

The invention relates to a method for controlling branch power congestion of an active power distribution network in real time, and belongs to the technical field of power system operation and control. The method comprises the steps that a three-phase node branch incidence matrix, a three-phase starting end node branch incidence matrix and a three-phase tail end node branch incidence matrix of the active power distribution network are established, an objective function for real-time control over the branch power congestion of the active power distribution network is also established, and a three-phase branch trend equation for reflecting operation of the radiating active power distribution network is further established; then the operation characteristic constrain of the three-phase active power distribution network and all the equipment in the network are comprehensively considered to conduct equivalent deformation on an original problem, a non-linear programming method is used for solving the control value of the active power of a distributed power source and the control value of the active power of a controllable active load, and real-time control over the branch power congestion of the active power distribution network is achieved. The method for controlling the branch power congestion of the active power distribution network highly accords with the characteristics of operation of the active power distribution network, and is small in calculated amount, capable of simply and conveniently achieving network modeling and analyzing of the active power distribution network, and more powerful in capacity for real-time controlling over branch power.

Description

technical field [0001] The invention relates to a real-time control method for branch power congestion of an active distribution network, belonging to the technical field of power system operation and control. Background technique [0002] The development of Distributed Generation (DG) can optimize the energy structure, promote energy conservation and emission reduction, and achieve sustainable economic development. In recent years, the penetration rate of distributed power in the distribution network has grown rapidly, and the traditional distribution network will gradually evolve into an active distribution network (Active Distribution Network, ADN) with many adjustable and controllable resources. to many challenges. [0003] The power consumption and absorption of distributed power sources, reactive power compensation devices, and loads in the active distribution network have greatly changed the power flow distribution of the network. The traditional power flow mode of ...

AI Technical Summary

Problems solved by technology

Many adjustable devices compete to use limited transmission and distribution lines, the power transmitted in the active distribution network will approach the upper limit of branch power, and the disorderly regulation of many resources will seriously affect the safety and economic operation of the distribution network

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