Comprehensive evaluation system and method for user-side power quality

Abstract

The invention provides a comprehensive evaluation system and method for the user-side power quality. Comprehensive evaluation is performed on the power grid of a power grid according to the category of the electric load of users. The comprehensive evaluation system is composed of monitoring point terminals, a data transmission network and a control platform server, wherein each monitoring point terminal is used for collecting power quality information at each user monitoring point, performing specified mathematical processing and outputting an obtained evaluation index set and a power qualitycomprehensive evaluation result to the data transmission network; the data transmission network is used for receiving the evaluation index set and the power quality comprehensive evaluation result which are outputted by the monitoring point terminals, and realizing two-way data transmission between the monitoring point terminals and between the monitoring point terminals and the control platform server through the Internet; and the control platform server performs information interaction with the monitoring point terminals through the data transmission network on the one hand, and releases thepower quality comprehensive evaluation result to the network on the other hand, thereby facilitating the users to check at any time through a computer or a mobile terminal.

Description

technical field [0001] The invention relates to the field of electrical engineering, in particular to a user-side power quality comprehensive evaluation system and method. Background technique [0002] The use of nonlinear loads, the research and application of new energy sources such as wind energy and solar energy, and the interconnection of large power grids have brought convenience to people's lives and caused the deterioration of power quality. With the continuous development of the electricity market and the increasingly prominent power quality problems, countries have formulated separate standards for the corresponding indicators of power quality according to the actual situation. However, the quality of power quality is determined by multiple indicators and cannot be determined solely by Whether a single indicator is qualified or not is judged. Comprehensive consideration of various relevant factors to obtain a scientific and comprehensive evaluation result is of gr...

AI Technical Summary

Problems solved by technology

At present, the unascertained function that is used more is the linear function. However, because the slope of each segment of the linear function is constant, it cannot identify special positions such as the intersection of two straight lines, and the unascertained measure distribution obtained is too average. There are certain defects

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