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LMU (Power Line Carrier Coupling Unit): This pannel is located between CVT and telemetric devices like RTU. The LMU matches transmitted signals with the substation devices.

PowerWave AC Current Limitation and Demonstration In this video, Thomas goes hands-on to show how to use the AC current limitation with live measurements. 🎥 https://lnkd.in/d6minUXU AMETEK

Maury Microwave and FormFactor Inc. have co-authored an application note regarding on optimized on-wafer passive load pull system for 5G FR2 frequencies, featured on EverythingRF.com.  Article “Overcoming the Challenges of Passive On-Wafer Load Pull Measurements at Millimeter Wave Frequencies for 5G Applications" introduces the challenges related to performing traditional on-wafer passive load pull measurements and an optimized automated impedance tuner platform and probe station integration to overcome these challenges. Maury Microwave Application Note 5A-074 “Overcoming the Challenges of Passive On-Wafer Load Pull Measurements at Millimeter Wave Frequencies for 5G Applications” is available for download <a href="https://lnkd.in/e66knmCH">here</a>.

AC frequency inverter harmonic interference solutions When encountering the harmonic interference problem of the inverter, first determine whether it is caused by the harmonics of the inverter rectification, or the harmonics of the inverter, or the result of both. Then take corresponding countermeasures, so that you can get twice the result with half the effort, so that the harmonics of the inverter have nowhere to hide. The solutions to the harmonic interference of the inverter are as follows: 1. Ground: Good grounding is the basis for the safe, stable, reliable and efficient operation of the frequency conversion system. Therefore, grounding is a very important part. 2. Cable: If your cable length is less than or equal to 50 meters, you can consider replacing the ordinary cable with a cable with a shielding layer, and grounding the shielding layer reliably through cable clips or U-clamps, which is also a solution. A method of frequency converter harmonic interference. 3. Devices: In addition to the above methods, the harmonics generated by the inverter can also be suppressed by installing a special harmonic suppression device for the inverter, which can also achieve the expected effect, or achieve a relatively good effect. The most widely used are the special output filter of MLAD-V-SC frequency converter, the special output reactor of MLAD-VR-SC frequency converter, MLAD-DW series Du/Dt filter, MLAD-SW sine wave filter and so on. https://lnkd.in/gta7SR98 #harmonics #ACfrequencyinverter #frequencyinverter

[ Ultrasonic Flowmeter ] At this particular site, the UW-10 series stationary flowmeter with 1 pair of sensors measures the flow rate through DN1200mm diameter pipes, non-intrusively, from the outside with no interference of flow. No other flowmeter cannot measure flow rate without modification to the pipe. 1 pairs of sensors are located on the pipe outside and provide data on instantaneous flow rate measurement values for the diametrical axis. Also, this remote region, no electricity power for any of device. Hence combination of Solar charging and battery drive system keep activating this flowmeter. Besides, periodically measurement data will be sent through mobile phone network. Even transmission error happens internal logging function can retain more than 1-month data inside, you can pull it out in any time.

Day 41 Tip: "Coaxial Cable Selection" 📡🔌 Select the right coaxial cable for RF connections based on frequency, impedance, and attenuation requirements. The cable quality directly impacts signal loss and system performance. #RFPCBDesignTips #CoaxialCables #RFDesign

What if large quantities of power could be transmitted via the 2-6 GHz microwave spectrum, rather than across bottlenecked cables and wires? Today's 12-page note explores power beaming. Advantages include long ranges, no wires, flexibility and possibly sci-fi-esque applications. Costs could ultimately be competitive with HVDCs, as lower capex compensates for lower efficiency, which we estimate at c50% round-trip. The note concludes by reviewing technical challenges, and interesting companies, but we still fear power grid bottlenecks in 2024-2030. https://lnkd.in/dzrFU9wU

This is Phasor measurement unit installed in a CRP panel in the control room of our substation. Phasor measurement units (PMUs) measure current and voltage by amplitude and phase at selected stations of the transmission system. The high-precision time synchronization (via GPS) allows comparing measured values (synchrophasors) from different substations far apart and drawing conclusions as to the system state and dynamic events such as power swing conditions. When selecting the option “Phasor Measurement Unit”, the devices determine current and voltage phasors, provide them with highly accurate time stamps and transmit them for analysis together with other measured values (frequency, speed of frequency change) using the IEEE C37.118 communication protocol, which are typically sent to the control center...

A series compensator is a device that is connected in series with a transmission line. A series compensator will be used at any place along the line. By connecting a capacitor in series with the transmission line, this method improves the system voltage. In series compensation, reactive power is supplied in series with the transmission line to improve the system's impedance and optimize the line's power transfer capability. Advantages of series compensation: • Increase in power transfer capability • Improvement in system stability • Control voltage • Lower voltage drop ✓ The reactance value in a transmission line is jX= j (XL – XC). In this instance, the capacitance reactance equals the inductive reactance, i.e., resonance condition, and the reactive power is eliminated (Z=R). ✓ As a result, by compensating the reactive power, this compensation improves system stability. ✓ The capacitive reactance is considered as XL /2. to limit the inductive reactance (XL) to half of its value.

Transformer Impedance Measurements In the previous post, I asked what the maximum frequency a transformer can be used at, based on it's open-circuit impedance. It's a bit of a trick question - unless you are going to use a transformer in an open circuit manner, as you would with a flyback circuit, the open circuit resonance is not important. You have to also look at the short circuit measurement of the transformer. In most applications, a load is connected to the output winding and both windings conduct at the same time. The blue curve below shows the short circuit resonance. This sets the upper usable bandwidth at 5 MHz or so, but it is still not enough data to completely know the answer. You have to know more about the loading before you can properly find the answer. For our particular application, the power bandwidth will be just in excess of 1 MHz. I would make extra measurements for this transformer, including the leakage inductance and the bandwidth test in the given loading application. (The RidleyBox or AP310 can help you with all of this.)