Method and system for improving monitoring precision of transformer substation in strong electromagnetic field environment

Abstract

The invention relates to a method and system for improving the settlement monitoring precision of a transformer substation in a strong electromagnetic field environment, wherein the method comprises the steps: numbering selectable detection point positions inside and outside the transformer substation, and marking the plane coordinates of each selectable detection point position; testing and recording the electromagnetic field intensity of each selectable detection point position; drawing an electromagnetic field intensity contour map or an isochromatism map of a to-be-monitored area of the transformer substation according to the plane coordinates and the electromagnetic field intensity of each selectable detection point position; and according to the contour map or the isochromaticity map, in combination with the selection condition of the detection point positions, selecting the point position with weak electromagnetic field intensity in the area where the selectable detection pointpositions are located as a reference station point position or a monitoring station point position. The arrangement of a monitoring network is more reasonable, and the calculated monitoring result ismore reliable.

Description

technical field [0001] The invention relates to the field of geotechnical engineering safety monitoring, in particular to a method for improving substation settlement monitoring accuracy in a strong electromagnetic field environment. Background technique [0002] In the construction of substations in mountainous areas, often because the plane area of ​​the plant area that can be used directly is not enough, the purpose of increasing the area of ​​the site is achieved by excavation and backfilling. Therefore, it is necessary to monitor the settlement of the soft foundation after backfilling, and install the settlement monitoring device in the substation. At points with relatively weak geology, the foundational safety of substations is judged based on the settlement monitoring data by establishing a substation settlement evaluation model. [0003] Substation foundation settlement monitoring means are many, according to the time of appearance, there are traditional optical meas...

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Problems solved by technology

[0005] However, the GNSS monitoring equipment at the reference station + monitoring station is an electronic component and is located in a strong electromagnetic field operating environment, and the point layout in the substation settlement monitoring design in the prior art focuses on geological conditions and boundary conditions, often ignoring the electromagnetic field The impact of the environment, or the awareness of the environmental impact of the electromagnetic field but failed to quantitatively analyze and solve it, the electromagnetic field interference of the substation has a direct impact on the operation stability of the GNSS settlement monitoring equipment, thus affecting the calculation accuracy of the monitoring data

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