Study on Selection Method of Analogy Line in High Voltage Transmission Project Environmental Impact Assessment

Abstract

This article integrate the theoretical calculation of the power-frequency electromagnetic field intensity and radio interference intensity under transmission line, and analyze the factor which influence the value and distribution of the electromagnetic field, radio interference under transmission line, aiming to provide basis and reference for other environmental assessment of electromagnetism. The study shows that a reasonable selection of analog lines can get an accurate result as the theoretical calculation. Important factors of analog lines selection including: grade of voltage, current, height of line, location order of line, number of circuit, section area of line, number of bundle conductors.

The Environmental Impact Assessment of Power Transmission Project Based on Fuzzy Theory

“…Establish evaluation index system. According to the environmental impact factors of Power Transformation Project, this paper selects natural, ecological, social economic and landscape environment factors to establish the multi-level evaluation index system [5,6], as in table 1: Landscape aesthetic effect C11 The impact of natural reserve and scenic spot C12…”

“…Finally, use the multi-level fuzzy comprehensive evaluation method to get the comprehensive evaluation vector. Evaluated every index of the project comprehensively, and write the comprehensive evaluation result for Bi, as in (5); then, get the fuzzy evaluation matrix R of rule layer index by comprehensive evaluation result of each index layer, as (6).…”