Optimization method of network variable structure with distributed type power supply distribution system

Abstract

The invention discloses an optimization method of a network variable structure with a distributed type power supply distribution system. The optimization method includes that basic static data of electric power network structure parameters, distributed type power supply distribution, load capacity, faulty lines and the like are extracted, under the condition of present line fault, the basic static data are utilized to perform islanding scheme calculation and correction, survivability indexes constructed by the method are combined to perform an online evaluation for islanding network safe operation performances and implement immediate control measures, finally, on account of residual network structure data after final islanding electric power network division is performed, by means of an ant colony algorithm, a reconfiguration optimal computation is performed for residual network with minimum network loss as a target, and finally the electric power network structure with high safe operation level is obtained. On the basis of the developed algorism and function modules, the invention further provides a large-scale power distribution network intelligent optimization decision system based on multi-stage computation correction and survivability evaluation, according to the technical scheme, the division and reconstruction of the network with the generalized model distributed type power supply distribution system are achieved, and accurate reference of network structure adjustment, schedule and operation can be excellently provided for regional electric power network schedule staffs.

Description

technical field [0001] The invention relates to a network variable structure optimization method with a generalized model including distributed power distribution system and a large-scale distribution network intelligent optimization decision system based on multi-stage calculation correction and survivability evaluation, belonging to the field of power grid dispatching operation technology and optimization. Background technique [0002] The power distribution system is a dissipative network with variable structure. When a fault occurs, the on-off state of the switch on the line is changed reasonably, and the power transmission path is actively decoupled and adjusted to optimize the system operation. Among them, network reconfiguration is a security countermeasure for the weak links of the system. For a long time, it has focused on the research of algorithms. By proposing the optimal path optimization method and constructing heuristic rules, it is possible to find the best sw...

AI Technical Summary

Problems solved by technology

In an environment where the use of clean energy is encouraged and the construction of smart grids is encouraged across the country, it is necessary to pay special attention to the statistics and analysis of the operation status of relay protection equipment. The power distribution system reconfiguration focuses on algorithm research, and lacks consideration of the islanding process of distributed power generation itself and the interruptibility of loads, resulting in large network losses or low resource utilization in the final reconfiguration scheme.

In the current dispatching operation method, there is also a lack of consideration of the support capacity of distributed power sources and the weak links of the network structure.

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