The fractional frequency transmission system FFTS is a very promising long -distance transmission approach, which uses lower frequency (50/3) to reduce the electrical length of the AC power line, and thus its transmission capacity can be increased several fold .   This paper introduces the primary experiments results of FFTS. 
 
The experiment uses the phase-controlled cycloconverter as the frequency changer, stepping up 50/3Hz electricity to 50Hz   electricity and supplying it to the utility grid. Thus, a new flexible ac transmission system device is successfully established   in this experiment. The synchronizing process of 50/3Hz transmission   system   with 50Hz utility system is introduced   in this paper. The experiment results   show that a 1200km/500kv transmission   line can transmit more than 2000MW electric power when employing the FFTS. The experiment also illustrates   that there is no essential difficulty   to realize FFTS in engineering practice.

Electricity plays a vital role in our day to day life and also there is a great demand for electricity today. Transmission losses are also one of the reasons for this demand. Since transmission is a main part of the power system it should be more efficient. During transmission there is a loss of 30%.To eliminate these losses we need a new technique which is called recent trend. The recent trend for efficient transmission of power is the “wireless power transmission system”. This paper exposes a new method for wireless power transmission using EM waves that comprises a transmitter and receiver in which we get a transmission efficiency of 95%. The receiver does not require an independent power source and it is comprised of an optical feedback to the transmitter and does not require a separate communication channel to the transmitter. The transmitter uses the optical feedback to locate and track the receiver. The transmitter can optionally employ a macro adjusters and micro adjusters that direct the beam onto the receiver for optimal power transmission. The system also optionally has a tight loop beam detector to enhance the safety of the system. Either the receiver or transmitter may also encode data on the energy transmission, resulting in one-way or two-way data transmission.