A novel dual-core current transformer based on TMR sensor and its measuring characteristics
Source abstract
Abstract
Current transformers (CTs) are the most widely used measurement instrumentation in power grids. Nevertheless, CT saturation gives rise to large measurement errors, which may have bad repercussions for the power system. In order to deal with the problem of CT saturation, a novel dual-core current transformer based on tunnel magnetoresistance sensor (DTCT) is proposed. Theoretical analyses, finite element method (FEM) simulations and accuracy tests are carried out to validate the practicability and effectiveness of the proposed DTCT. The simulation and experimental results manifest that the steady-state and transient characteristics of the DTCT are outstanding.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Magnetic Field Sensors Techniques · Non-Destructive Testing Techniques · Magneto-Optical Properties and Applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
School of Electrical Engineering and Automation, Wuhan University 1 , Wuhan 430072, China
State Grid Shanghai Municipal Electric Power Company 2 , Shanghai 200080, China
State Grid Electric Power Research Institute 3 , Nanjing 210037, China
Funding
State Grid Corporation of China
References (9)
Show source-provided references
1. The development and performance of dual-core DC tolerant current transformer10.1109/tpwrd.2022.3215187 ↗
2. Improving current transformers transient response and saturation effects using air-gapped core
3. Current-transformer saturation detection with genetically optimized neural networks10.1109/tpwrd.2007.893363 ↗
4. Correction of saturated current from measurement current transformer10.1049/iet-epa.2013.0105 ↗
5. Framework for current transformer saturation detection and waveform reconstruction10.1049/iet-gtd.2017.1742 ↗
6. Avoid current transformer saturation using adjustable switched resistor demagnetization method10.1109/tpwrd.2020.2983484 ↗
7. Current transformer saturation compensator by using negative voltage feedback10.1109/tpwrd.2019.2936449 ↗
8. Fast and in situ remanent flux detection method for a protection current transformer based on the fluxgate theory10.1063/9.0000140 ↗
9. Developments and applications of tunneling magnetoresistance sensors10.26599/tst.2021.9010061 ↗