Coding method of fast acquisition of radiation topology structure in ring power distribution network

Abstract

The invention relates to a coding method of fast acquisition of a radiation topology structure in a ring power distribution network. The coding method is characterized in that 1) ring network switches can be acquired, and are all of the switches of the ring network of the closed power distribution network, comprise section switches and interconnection switches, and disconnected switch variables can be used to represent feasible topology structures in the power distribution network; 2) the ring network can be simplified; 3) a loop-switch matrix can be formed according to the ring network determination principle; 4) variables in a coding space can be determined according to the variable selection principle of the designed effective coding method; 5) diagonal elements in the matrix can be fixed, and according to the switch selection principle, disaggregation spaces of a plurality of feasible topology structures can be acquired; 6) the related switch number of every variable can be analyzed, and the switch combination number of every disaggregation space can be determined. By adopting the above mentioned method, the topology structure can be simplified, the network scale can be reduced, the coding length can be shortened, the number of the parameters can be reduced, and the calculation can be simple.

Description

technical field [0001] The invention relates to the field of power system optimization engineering, in particular to a coding method for quickly acquiring radial topological structures in a ring distribution network. Background technique [0002] The distribution network topology determines the operation mode of the distribution system, which will have a great impact on the power supply reliability, economy and investment of the power system. The topology of modern distribution network can change the network structure by changing the section switch and tie switch. During normal or abnormal operation, in order to achieve the goals of minimum system loss and fast fault recovery, an optimal topology is usually found under the constraints of maintaining radial operation of the distribution network. [0003] There are often a large number of section switches and tie switches in the modern distribution network. Changing the state of these switches usually produces many different ...

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Problems solved by technology

In addition, there may be a certain number of infeasible solutions in the coding space, which requires that the validity check must be performed for each solution during the search process, thus increasing the complexity of the search algorithm

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