Smart device needs smart connectivity
Project RAM-1 came to a point where 2G communication protocol is not sufficient anymore for the needs of device’s functionalities. Decision was made to upgrade the hardware to support NB-IoT and LTE-M1 mobile network connectivity. This consists of the modem on the device itself and a SIM card specifying the relationship with the mobile carrier.…
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RAM-CENTER monitoring platform
In the end of year 2019 we launched the online monitoring platform for surge arresters called RAM-CENTER. The customer will be offered a choice of package access to the platform functionalities, whereby the basic package will offer only the basic features for arrester monitoring, with more advanced packages the customer will get a full array…
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First installation in the field
On November 29, 2019, we performed the first installation of the prototype device RAM-1 in the field: Location: Uršlja Gora, Elektro Celje System: 20 kV transmission line; transition from overhead line to cable line Surge arresters: Ur = 30 kV, class DH Test device settings: connectivity 2G measurement setting the measurement period in seconds: 3600…
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Development of basic program routines for a microcontroller
Basic program routines have been developed for the microcontroller to be installed in the device: Door initialization Power management for the analog part Signal capture on AD converter (temperature and leakage current) Save the signal in the internal memory FFT Synthesization of auxiliary signals Basic mathematical operations between signals
Development of a new method
Development of a new method for eliminating the resistive component of leakage current Based on the collected information and data obtained through measurements, we developed a new method for eliminating the resistance component of the leakage current. We made a simulation of the method with the software tool LabView and compared the results with the…
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Implementation of Modified method
Implementation of Modified method with phase shift of current in simulation We created a simulation with the LabView software tool for the selected method. In the first phase, the efficiency of the simulated signal method was tested, where the amplitude and phase of the higher harmonic components of the signal can be continued. In this…
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