TMR sensor current measurement technology for overhead lines
نویسندگان
چکیده
Abstract In order to meet the needs of TMR current sensors for overhead line high precision measurement, a neighboring conductor interference magnetic field error elimination algorithm is proposed. Based on Biot-Savard law, through establishment an environment mathematical model, accuracy verified in maxwell simulation software. The results show that under working frequency current, adjacent wire can reduce from 14% less than 1%, and lightning wave environment, reduced 19% 1%. This proves proposed effective reducing measurement caused by conductor.
منابع مشابه
A Novel Transient Fault Current Sensor Based on the PCB Rogowski Coil for Overhead Transmission Lines
The accurate detection of high-frequency transient fault currents in overhead transmission lines is the basis of malfunction detection and diagnosis. This paper proposes a novel differential winding printed circuit board (PCB) Rogowski coil for the detection of transient fault currents in overhead transmission lines. The interference mechanism of the sensor surrounding the overhead transmission...
متن کاملReducing Message Overhead in TMR Systems
Traditional TMR protocols assume either single, reliable voters for each Triple-Modular Redundant Unit (TMRU) or triplicated voters (one for each processor) for each TMRU. In the first case a voter is a single point of failure for the system. In the second case, many physical messages must be sent across the communication network for each logical data item. We examine some protocols which attem...
متن کاملFault Location on Compensated Transmission Lines without Current Measurement
This paper presents a novel fault location method for series compensated transmission lines. It is established based on synchronized voltages sampling and Thevenin impedance from both ends of series compensated transmission line. The method is based on the use of phasor measurement units (PMU) technology which is aimed to be independent of current measurements, fault type, fault resistance, fau...
متن کاملElectronic Energy Meter Based on a Tunnel Magnetoresistive Effect (TMR) Current Sensor
In the present work, the design and microfabrication of a tunneling magnetoresistance (TMR) electrical current sensor is presented. After its physical and electrical characterization, a wattmeter is developed to determine the active power delivered to a load from the AC 50/60 Hz mains line. Experimental results are shown up to 1000 W of power load. A relative uncertainty of less than 1.5% with ...
متن کاملFibre optic sensing system for monitoring of current collectors and overhead contact lines of railways
Fibre optic sensors are excellent tools to use for monitoring high-voltage current collectors. Because of their small cross section and electrical neutrality, they are easily integrated into the current collector strip and are well specialized for detection of high-speed load events. The conventional contact force measurement with four force sensors below the collector strips can also be simpli...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of physics
سال: 2023
ISSN: ['0022-3700', '1747-3721', '0368-3508', '1747-3713']
DOI: https://doi.org/10.1088/1742-6596/2530/1/012017