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The PD Doctor is an advanced Partial Discharge (PD) online monitoring system designed to maintain the integrity of electrical networks aboard marine vessels. Installed on the main distribution board bus bar, the PD Doctor continuously monitors partial discharge activity on each of the three phases of the vessel’s electrical system. This system helps identify potential […]

In the field of electrical equipment diagnostics, the ultimate goal is not only to detect existing issues but to accurately predict the future reliability and performance of the equipment. This is especially critical when monitoring partial discharges, which can indicate potential insulation failures in high-voltage systems. While both offline and online partial discharge monitoring methods […]

Dozens of PD Doctor installations across Europe have proven their high added user value and reliability for customers. They have detected degradation of existing lines, helped eliminate high interference on overhead lines, established the link between rainy weather and increasing partial discharge (PD) activity, for example, or helped save significant amounts of money by postponing […]

As society’s dependence on electricity increases, the issue of the quality of power supply and the elimination of unexpected outages comes to the fore. This is made possible primarily by diagnostics and its tools. The rapid development of diagnostics goes hand in hand with the increasing complexity of diagnostic systems and new technical possibilities in […]

🌟 ModemTec is proud to be a Gold Sponsor at the upcoming 2024 International Conference on Diagnostics in Electrical Engineering (Diagnostika24), hosted by the University of West Bohemia in Pilsen. We will showcase our cutting-edge Partial Discharge Online Monitoring System – PD Doctor, which plays a crucial role in enhancing the safety and reliability of […]

Power Line Carrier (PLC) communication uses the low-voltage distribution network. It is completely irrelevant what standard or proprietary protocol is used. Meter reading systems use the same frequency band and distribution system, which always has similar characteristics and behavior. What influences the effectivity of PLC communication? Among the influences that affect data transmission from e-meters […]

We were tasked to provide continous online partial discharge monitoring system, to enhance the safety and reliability of a vital energy distribution point in Poland. Site inspection led us to deploy the PD Doctor system within a 15 kV transformer station, and subsequent to a successful installation, a period of stable discharge activity was observed. […]

☕ 📰 Partial discharges (PD) represent a critical concern in railway traction systems due to their potential to degrade insulation, leading to equipment failure and safety hazards. Understanding the determination and influence of PD in these systems is crucial for ensuring reliable and safe operation.☕ 📰 How to determine partial discharges? 💻 Firstly, the determination […]

Partial discharge (PD) is a type of electrical breakdown that occurs when only part of the insulation between two conductors is damaged. This results in localized increase in electrical current, which can cause damage to the surrounding insulation. Partial discharge can occur in any type of electrical equipment but is most commonly found in high-voltage […]

Within the smart grid, PLC communication over high voltage (230 V) belongs to the dominant transmission channels. The area of the operated territory is often up to 1km2 , and there are plenty of factors with negative influences on PLC signal strength, including topology changes, parasitic impedance from customer behaviour, or significantly high disturbance because customers […]