Reactive compensation method and device for medium-voltage network and computer readable storage medium

Abstract

The invention provides a reactive compensation method and device for a medium-voltage network and a computer readable storage medium. The urban rail transit medium-voltage network comprises a plurality of traction substations which are provided with medium-voltage energy feedback devices and serve as compensation nodes, the medium-voltage energy feedback devices are used for performing distributedreactive power compensation on the urban rail transit medium-voltage network, the optimized reactive compensation amount corresponding to each compensation node is determined based on a particle swarm algorithm; and the medium-voltage energy feedback devices of the compensation nodes are controlled to perform reactive compensation according to the corresponding optimized reactive compensation amount. According to the invention, reactive compensation can be performed by utilizing the existing medium-voltage energy feedback device in the traction substation, and a power grid does not need to betransformed on a large scale, so that the transformation cost is saved. Moreover, the method provided by the invention is based on the particle swarm optimization, can determine the better reactive compensation scheme, and enables a reactive compensation result to be more reasonable.

Description

technical field [0001] The present disclosure relates to reactive power compensation technology, and in particular to a reactive power compensation method, device and computer-readable storage medium for a medium-voltage network. Background technique [0002] The electricity load of urban rail transit system is mainly composed of vehicle traction load and power lighting load. During the nighttime outage of the urban rail transit system, only a small amount of emergency power lighting load, maintenance power load and other loads are put into use, which makes the active power and inductive reactive power generated by the urban rail transit system very small, while the urban rail transit system The generated capacitive reactive power is basically unchanged. In this situation, the urban rail transit system is in the state of capacitive reactive power transfer, resulting in the power factor of the urban rail transit system being as low as below 0.5. If the power factor is too l...

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Problems solved by technology

[0004] The present disclosure provides a reactive power compensation method, device, and computer-readable storage medium for a medium-voltage network to solve the problem of adding reactive power compensation equipment to an urban rail transit system in the prior art, which causes the power supply network structure of the urban rail transit system to be complicated. Complicated, unreasonable reactive power compensation, large power supply network loss

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