A distributed power supply grid-connected electricity price mechanism considering electric energy quality

Abstract

The invention discloses a distributed power supply grid-connected electricity price mechanism considering power quality, which comprises the following steps of: constructing a comprehensive evaluationindex system from two aspects of a user side and a power supply side; when each power utilization side and each power supply side upload the index data, performing normalization processing on the collected index data by applying a normal distribution membership degree, performing weighting processing on each index of the comprehensive evaluation system by adopting a fuzzy close degree-based method to obtain a comprehensive evaluation value, and obtaining an electric energy quality grade by measuring the distance between the comprehensive evaluation value and an ideal value; Differential on-grid electricity prices are implemented for the distributed power supply according to the electric energy quality evaluation, and the electricity prices are corrected by adopting different weighting coefficients according to the electric energy quality grade. The method can solve the problem that the user-side electric energy quality is reduced due to the fact that renewable energy sources are connected into the power distribution network, prevents low-quality power sources from being connected into the power grid, and promotes each distributed power generator to improve the quality of suppliedelectric energy.

Description

technical field [0001] The invention belongs to the field of electric energy quality evaluation of distributed power supply and the technical field of on-grid electricity price, and specifically relates to an on-grid electricity price mechanism of distributed power supply considering power quality. Background technique [0002] In the process of promoting the Energy Internet, power quality has become an inevitable demand for refined services of power grid enterprises. The current power supply reliability indicators cannot reflect users' feelings about the quality and use experience of electricity as a commodity. The comprehensive power quality evaluation system considered by both parties, and the separation of power quality indicators from the electricity price strategy also lead to the risk of incorporating waste power into the main power grid. [0003] The supply of high-quality electric energy is the key to modern economic development, but the reliability evaluation of do...

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Problems solved by technology

[0002] In the process of promoting the Energy Internet, power quality has become an inevitable demand for refined services of power grid enterprises. The current power supply reliability indicators cannot reflect users' feelings about the quality and use experience of electricity as a commodity. The comprehensive power quality evaluation system considered by both parties, and the separation of power quality indicators and electricity price strategies also lead to the risk of merging waste power into the main power grid.

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