Active power distribution network power supply quality composite sensing and evaluating method and system based on ubiquitous interconnection

Abstract

The invention discloses an active power distribution network power supply quality composite sensing and evaluating method and system based on ubiquitous interconnection. The method comprises the following steps: collecting power supply quality measurement data of a plurality of monitoring points in an active power distribution network, and carrying out the fusion of the data of each monitoring point based on a DS evidence theory; realizing composite sensing of the power supply quality condition of each part in the active power distribution network to obtain a power supply quality index composite sensing sequence; and performing comprehensive evaluation on the power supply quality composite perception sequence in combination with a cloud model theory, so that randomness and fuzziness of power supply quality evaluation are overcome, and finally a comprehensive, accurate and objective power supply quality index evaluation result of the active power distribution network is given. Accordingto the method, comprehensive, accurate and objective composite perception of the power supply quality in the active power distribution network can be realized, and the comprehensive evaluation resultof the power supply quality of the active power distribution network is given.

Description

technical field [0001] The invention belongs to the technical field of power load time series modeling, in particular to a method and system for composite perception and evaluation of power supply quality of an active distribution network based on ubiquitous interconnection. Background technique [0002] Composite perception and evaluation of the power supply quality of the active distribution network is an important basis for measuring the level of power supply quality, formulating electricity prices and power supply strategies, and controlling and improving power quality. [0003] The active distribution network has a complex structure, a wide range of areas, and a large number of distributed energy sources and controllable loads, which have a serious impact on the quality of power supply. Traditional power quality evaluation standards are difficult to adapt to the growing demand for power supply quality. In addition, as the trend of electricity marketization continues to ...

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Problems solved by technology

[0005] The above traditional power supply quality evaluation methods are often only evaluated based on the power supply quality index data of a single monitoring point, and it is gradually difficult to adapt to the complex network conditions of the active distribution network, and cannot comprehensively, accurately and objectively evaluate the quality of the active distribution network. Power Quality Status

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