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- Title
基于同轴电容的谐波电压监测及影响因素分析.
- Authors
何文林; 詹江杨
- Abstract
Harmonic content is a key indicator of power quality, and the level of harmonic voltage monitoring in high-voltage power grids still cannot fully meet the production needs of electric power enterprises. By establishing a harmonic voltage testing system based on the end screen grounding current of coaxial capacitor, the influence of capacitance on the test results of harmonic voltage content at different frequencies is analyzed. The actual measurement shows that the influence of capacitance change on the harmonic voltage content is no more than 2%. The correlation between insulation performance and the error of harmonic voltage content is analyzed: when tanδ is less than 0.2, the test error of harmonic voltage content is no more than 2%; the range of variation of tanδ(f) under different insulation states is measured, and the analysis shows that the influence of insulation state on harmonic voltage content rate is not significant.
- Subjects
ELECTRIC power production; ELECTRIC power distribution grids; ELECTRIC capacity; TEST systems; CURRENT transformers (Instrument transformer); CAPACITANCE measurement; PARTIAL discharges; HARMONIC distortion (Physics)
- Publication
Zhejiang Electric Power, 2023, Vol 42, Issue 3, p103
- ISSN
1007-1881
- Publication type
Article
- DOI
10.19585/j.zjdl.202303013